Abstract:
A control panel of a machining tool includes a measurement unit measuring a temperature and a humidity involved with an atmosphere inside the control panel, an adjustment unit adjusting the temperature and the humidity, and an atmosphere control unit controlling an atmosphere inside the control panel by controlling the adjustment unit. Since the atmosphere control unit receives electric power supplied from a system separated from a power supply supplying electric power to the machining tool, it is possible to protect various electronic devices inside the control panel by measuring and adjusting the atmosphere inside the control panel even when the machining tool power supply is not turned on.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Field of the Invention 
         [0002]    The present invention relates to a machining tool having a function of monitoring and controlling an atmosphere inside a machining tool control panel. 
         [0003]    2. Description of the Related Art 
         [0004]    A machining tool includes many electronic devices such as a numerical controller and a servo amplifier. However, there are many external failure factors that cause the failure of the electronic devices. Here, oil, oil mist, dust, a chemical liquid, water, and steam are produced as the external failure factors due to a cutting operation or a grinding operation, and exist in the atmosphere around the machining tool. In order to protect the electronic devices from the external failure factors, the electronic devices are received in a locker called a control panel in a general machining tool. 
         [0005]    In order to attain the object of protecting the electronic devices from the external failure factors, the control panel needs to be a sealing structure capable of shielding the atmosphere outside the control panel. However, the structure with a high sealing property degrades the maintainability or the workability inside the control panel or degrades the heat radiation performance of the internal device. For this reason, the control panel can not be formed as a complete sealing structure, and hence the influence of the atmosphere outside the control panel needs to be allowed to a certain degree. 
         [0006]    In order to solve the above-described problems, for example, a technique of cooling an electronic device disclosed in JP 06-119083 A or a technique of protecting an electronic device by monitoring and controlling a temperature or a humidity inside a control panel disclosed in JP 09-138044 A may be used. If this technique is used, the electronic devices can be protected even when the atmosphere outside the control panel influences the inside of the control panel. Further, when the concentration of oil mist or dust as the external failure factor is further monitored and controlled without monitoring and controlling only the temperature or the humidity, the electronic devices are further protected. 
         [0007]    However, the number of interfaces connectable to the peripheral devices of the machining tool is limited. For example, there are many peripheral devices to be connected, such as an automatic door opening/closing device, a machining tool interior lamp, and a cutting liquid pump, in addition to the device for protecting the electronic devices. For that reason, if there are many external failure factors to be monitored and controlled, a problem arises in that the number of empty interfaces for a controller or a necessary sensor is not enough. Further, there is a concern that the external failure factors may intrude into the control panel or influence the inside of the control panel even while the machining tool is not operated. However, it is not possible to protect the electronic devices from the intrusion and the influence of the external failure factors while the machining tool is turned on. As a countermeasure for this problem, a method of controlling the atmosphere by a control system independent from the machining tool can be considered as disclosed in, for example, JP 2002-103102 A. However, in this method, there is no need to worry about the problem in which the number of empty interfaces decreases even when the external failure factors to be monitored and controlled increase in number. 
         [0008]    However, in the method of controlling the atmosphere by the control system independent from the machining tool, a problem arises in that the external failure factor to be controlled are handled as a black box. Here, the environment of the machining tool changes depending on the machining tool and the kind or the method of the external failure factor to be monitored and controlled after the machining tool is supplied needs to be adjusted and improved depending on the machining tool. For this reason, it is desirable to visualize the control method or the state of the measured external failure factor. Further, when the convenience in use for a user is considered, it is desirable to integrate a user interface with the machining tool instead of separating the user interface from the machining tool and the external failure factor control system. 
       SUMMARY OF THE INVENTION 
       [0009]    Here, an object of the invention is to provide a machining tool equipped with a device for monitoring and controlling a plurality of failure factors for an atmosphere inside a machining tool control panel by the use of a power supply independent from a machining tool controller, a machining tool, and a communication unit. 
         [0010]    A machining tool according to an aspect of the invention includes a control panel housing an electronic device including a machining tool control unit and a user interface unit operating a machining tool. 
         [0011]    In a machining tool according to a first aspect of the invention, the control panel includes a temperature measurement unit measuring an atmosphere temperature inside the control panel, a temperature adjustment unit adjusting the atmosphere temperature inside the control panel, a humidity measurement unit measuring an atmosphere humidity inside the control panel, a humidity adjustment unit adjusting the atmosphere humidity inside the control panel, an atmosphere control unit controlling an atmosphere inside the control panel, and an atmosphere-controlling power supply unit supplying electric power to the temperature measurement unit, the humidity measurement unit, the temperature adjustment unit, the humidity adjustment unit, and the atmosphere control unit, independently from a power supply of the machining tool. Then, the atmosphere control unit is connected to the machining tool control unit via a first communication unit so as to communicate with the machining tool control unit, and the atmosphere control unit includes a storage unit storing a temperature command and a humidity command respectively correlated with a temperature and a humidity and a command output unit extracting the temperature command and the humidity command stored in the storage unit based on the temperature and the humidity respectively measured by the temperature measurement unit and the humidity measurement unit so as to output the temperature command and the humidity command. Meanwhile, the user interface unit includes a command change unit connected to the machining tool control unit via a second communication unit so as to check the measured temperature and the measured humidity and to change the temperature command and the humidity command of the atmosphere control unit. 
         [0012]    The control panel further may include a concentration measurement unit measuring an oil mist concentration inside the control panel and a concentration adjustment unit adjusting the oil mist concentration inside the control panel. Further, the atmosphere-controlling power supply unit may supply electric power to the concentration measurement unit and the concentration adjustment unit in addition to the temperature measurement unit, the humidity measurement unit, the temperature adjustment unit, the humidity adjustment unit, and the atmosphere control unit. Furthermore, the storage unit may store a temperature command, a humidity command, and an oil mist concentration command respectively correlated with the temperature, the humidity, and the oil mist concentration. Moreover, the command output unit may extract and output the temperature command, the humidity command, and the concentration command stored in the storage unit based on the temperature, the humidity, and the oil mist concentration measured by the temperature measurement unit, the humidity measurement unit, and the concentration measurement unit, and outputs these extracted commands. Here, the control panel further may include a measurement information storage unit storing measurement information measured by the temperature measurement unit, the humidity measurement unit, and the concentration measurement unit. Then, the machining tool control unit may receive the measurement information measured by the temperature measurement unit, the humidity measurement unit, and the concentration measurement unit and store the measurement information in the measurement information storage unit. 
         [0013]    The control panel further may include a measurement information storage unit storing measurement information measured by the temperature measurement unit and the humidity measurement unit. Further, the machining tool control unit may receive the measurement information measured by the temperature measurement unit and the humidity measurement unit and store the measurement information in the measurement information storage unit. 
         [0014]    In a machining tool according to a second aspect of the invention, the control panel includes a temperature measurement unit measuring an atmosphere temperature inside the control panel, a humidity measurement unit measuring an atmosphere humidity inside the control panel, a ventilation unit ventilating the inside of the control panel, an atmosphere control unit controlling an atmosphere inside the control panel, and an atmosphere-controlling power supply unit supplying electric power to the temperature measurement unit, the humidity measurement unit, the ventilation unit, and the atmosphere control unit, independently from a power supply of the machining tool. Further, the atmosphere control unit is connected to the machining tool control unit via a first communication unit so as to communicate with the machining tool control unit. Furthermore, the atmosphere control unit includes a storage unit storing the ventilation command correlated with the temperature and the humidity and a command output unit extracting the ventilation command stored in the storage unit based on the temperature and the humidity respectively measured by the temperature measurement unit and the humidity measurement unit so as to output the ventilation command. Meanwhile, the user interface unit includes a command change unit connected to the machining tool control unit via a second communication unit so as to check the measured temperature and the measured humidity and to change the ventilation command of the atmosphere control unit. 
         [0015]    The control panel further may include a concentration measurement unit measuring an oil mist concentration inside the control panel. Further, the atmosphere-controlling power supply unit may supply electric power to the concentration measurement unit in addition to the temperature measurement unit, the humidity measurement unit, the ventilation unit, and the atmosphere control unit. Furthermore, the storage unit may store a ventilation command correlated with the temperature, the humidity, and the oil mist concentration. Moreover, the command output unit may extract and output the ventilation command stored in the storage unit based on the temperature, the humidity, and the oil mist concentration respectively measured by the temperature measurement unit, the humidity measurement unit, and the concentration measurement unit, and outputs these extracted commands. Here, the control panel further may include a measurement information storage unit storing measurement information measured by the temperature measurement unit, the humidity measurement unit, and the concentration measurement unit. Further, the machining tool control unit may receive the measurement information measured by the temperature measurement unit, the humidity measurement unit, and the concentration measurement unit and store the measurement information in the measurement information storage unit. 
         [0016]    The control panel further may include a measurement information storage unit storing measurement information measured by the temperature measurement unit and the humidity measurement unit. Further, the machining tool control unit may receive the measurement information measured by the temperature measurement unit and the humidity measurement unit and store the measurement information in the measurement information storage unit. 
         [0017]    In a machining tool according to a third aspect of the invention, the control panel includes a temperature measurement unit measuring an atmosphere temperature inside the control panel, a temperature adjustment unit adjusting an atmosphere temperature inside the control panel, a humidity measurement unit measuring an atmosphere humidity inside the control panel, a humidity adjustment unit adjusting the atmosphere humidity inside the control panel, an atmosphere control unit controlling an atmosphere inside the control panel, and an atmosphere-controlling power supply unit supplying electric power to the temperature measurement unit, the humidity measurement unit, the temperature adjustment unit, the humidity adjustment unit, and the atmosphere control unit, independently from a power supply of the machining tool. Further, the atmosphere control unit is connected to the machining tool control unit via a first communication unit so as to communicate with the machining tool control unit. Furthermore, the atmosphere control unit includes a storage unit storing a temperature command and a humidity command respectively correlated with the temperature and the humidity and a command output unit extracting the temperature command and the humidity command stored in the storage unit based on the temperature and the humidity respectively measured by the temperature measurement unit and the humidity measurement unit so as to output the temperature command and the humidity command. Meanwhile, the user interface unit includes a command change unit connected to the machining tool control unit via a second communication unit and connected to the atmosphere control unit via a third communication unit so as to check the measured temperature and the measured humidity and to change the temperature command and the humidity command of the atmosphere control unit. 
         [0018]    According to the invention, it is possible to provide a machining tool equipped with a device for monitoring and controlling a plurality of failure factors by the use of a power supply independent from a machining tool controller, a machining tool, and a communication unit, wherein the user can highly reliably monitor and check the control state of the external failure factor by increasing the number of the external failure factors to be monitored and controlled without increasing the number of the interfaces connectable to the peripheral devices of the machining tool. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0019]    The above and other objects and the features of the present invention will be apparent from the following description of embodiments below with reference to the accompanying drawings, in which: 
           [0020]      FIG. 1  is a main block diagram illustrating a machining tool according to a first embodiment of the invention; 
           [0021]      FIG. 2  is a main block diagram illustrating a machining tool according to a second embodiment of the invention; 
           [0022]      FIG. 3  is a main block diagram illustrating a machining tool according to a third embodiment of the invention; 
           [0023]      FIG. 4  is a main block diagram illustrating a machining tool according to a fourth embodiment of the invention; 
           [0024]      FIG. 5  is a main block diagram illustrating a machining tool according to a fifth embodiment of the invention; and 
           [0025]      FIG. 6  is a main block diagram illustrating a machining tool according to a sixth embodiment of the invention. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       [0026]    First, a machining tool according to a first embodiment of the invention will be described with reference to  FIG. 1 . 
         [0027]    The machining tool according to the embodiment includes a control panel  100 , a machining tool drive unit  200 , and a machining tool power supply  210 . The control panel  100  includes a machining tool control unit  110 , an atmosphere control unit  120 , a temperature measurement unit  130 , a temperature adjustment unit  132 , a humidity measurement unit  140 , a humidity adjustment unit  142 , an atmosphere-controlling power supply unit  160 , and a user interface unit  170 . 
         [0028]    The machining tool control unit  110  receives a machining command from a user via the user interface unit  170  or generates a machining command based on a machining program read out from a memory (not shown), controls the machining tool drive unit  200  based on the machining command, and outputs machining information obtained by controlling the machining tool drive unit  200  to the user interface unit  170 . The machining tool control unit  110  further receives temperature and humidity command values from the user via the user interface unit  170  so as to output these command values to the atmosphere control unit  120 . Meanwhile, the machining tool control unit  110  further receives atmosphere measurement information such as a temperature and a humidity from the atmosphere control unit  120  so as to output the atmosphere measurement information to the user interface unit  170 . 
         [0029]    The atmosphere control unit  120  includes a storage unit  122  which stores a table obtained by correlating a physical amount representing the atmosphere inside the control panel  100  with a command value for adjusting the atmosphere inside the control panel  100  and a command output unit  124  which extracts the command value stored in the storage unit  122  and outputs the command value to the adjustment units (the temperature adjustment unit  132  and the humidity adjustment unit  142 ) adjusting the atmosphere. 
         [0030]    In the embodiment, the ‘atmosphere temperature’ and the ‘atmosphere humidity’ are selected as the physical amount of the atmosphere inside the control panel  100 . For that reason, the storage unit  122  stores the temperature command value and the humidity command value respectively correlated with the atmosphere temperature and the atmosphere humidity. As shown in  FIG. 1 , the temperature command value and the humidity command value are respectively correlated with the atmosphere temperature and the atmosphere humidity every predetermined temperature range and every predetermined humidity range in a table format, and the temperature command value and the humidity command value stored in the storage unit  122  may be extracted based on the temperature information and the humidity information input from the temperature measurement unit  130  which measures the temperature inside the control panel  100  and the humidity measurement unit  140  which measures the humidity inside the control panel  100 . 
         [0031]    The control panel  100  includes the temperature measurement unit  130  and the humidity measurement unit  140  which respectively measure the atmosphere temperature and the atmosphere humidity inside the control panel  100 . The atmosphere control unit  120  extracts the temperature command value and the humidity command value stored in the storage unit  122  based on the temperature information and the humidity information respectively input from the temperature measurement unit  130  and the humidity measurement unit  140 . The command output unit  124  generates a temperature command and a humidity command based on the extracted temperature command value and the extracted humidity command value and outputs these commands to the temperature adjustment unit  132  and the humidity adjustment unit  142 . In this way, the atmosphere temperature and the atmosphere humidity inside the control panel  100  are adjusted by the temperature adjustment unit  132  and the humidity adjustment unit  142 . 
         [0032]    In addition, the atmosphere temperature and the atmosphere humidity are respectively correlated with the temperature command value and the humidity command value and are stored as the table form in the storage unit  122  shown in  FIG. 1 , but the correlation is not limited to the example of  FIG. 1 . For example, in  FIG. 1 , the temperature command value and the humidity command value are respectively correlated with the atmosphere temperature and the atmosphere humidity while the temperature range and the humidity range are respectively set to 10° C. and 10%. However, there is no need to fix the temperature range and the humidity range. For example, the temperature range and the humidity range can be changed by the temperature zone and the humidity zone. In that case, the temperature range and the humidity range may be set based on the characteristics of the temperature adjustment unit  132  and the humidity adjustment unit  142  or the temperature range and the humidity range may be set based on an experiment or the like. Further, the correlation of the atmosphere temperature and the atmosphere humidity with respect to the temperature command value and the humidity command value is not limited to the table form shown in  FIG. 1 . For example, the storage unit  122  may store a relational expression for obtaining the temperature command value and the humidity command value from the atmosphere temperature and the atmosphere humidity. 
         [0033]    In the atmosphere control unit  120  with such a configuration, when the temperature information and the humidity information are respectively input from the temperature measurement unit  130  and the humidity measurement unit  140  which respectively measure the temperature and the humidity inside the control panel  100 , the temperature command value and the humidity command value respectively corresponding to the temperature information and the humidity information are extracted by referring to the table of the storage unit  122  based on the input temperature information and the input humidity information, and the command output unit  124  generates the temperature command and the humidity command based on the extracted temperature command value and the extracted humidity command value. The temperature command and the humidity command which are generated in this way are respectively output to the temperature adjustment unit  132  and the humidity adjustment unit  142 , and hence the atmosphere temperature and the atmosphere humidity inside the control panel  100  are adjusted. 
         [0034]    The temperature measurement unit  130  and the humidity measurement unit  140  are respectively configured as measurement units which respectively measure the atmosphere temperature and the atmosphere humidity inside the control panel  100 , and generate the temperature information and the humidity information so as to output the temperature information and the humidity information to the atmosphere control unit  120 . Further, the temperature adjustment unit  132  and the humidity adjustment unit  142  are respectively configured as units having a function of adjusting the atmosphere temperature and the atmosphere humidity inside the control panel  100 . For example, the devices include a heat exchanger such as a cooler, a dehumidifier, and a ventilation fan provided in the control panel  100 . 
         [0035]    The atmosphere-controlling power supply unit  160  is a power supply which supplies electric power to the atmosphere control unit  120 , the temperature measurement unit  130 , the humidity measurement unit  140 , the temperature adjustment unit  132 , and the humidity adjustment unit  142 , and is provided separately from the machining tool power supply  210  which supplies electric power to the machining tool control unit  110 . 
         [0036]    The user interface unit  170  includes an input unit (not shown) which is configured as a key, a switch, a mouse, or a touch panel for receiving an operation from the user and a display unit such as a liquid crystal display (not shown) for providing the machining information or the measurement information. By using the user interface unit  170 , the user can generate various commands for the machining tool control unit  110  or the atmosphere control unit  120  via the input unit and can check the information on the machining tool or the control panel via the display unit. 
         [0037]    In the control panel  100  with the above-described configuration, the atmosphere-controlling power supply unit  160  which supplies electric power to the atmosphere control unit  120  is provided separately from the machining tool power supply  210  which supplies electric power to the machining tool control unit  110  as described above. For this reason, the atmosphere inside the control panel can be measured and adjusted even when the machining tool power supply  210  is not turned on, that is, the machining tool is not operated. 
         [0038]    Next, a machining tool according to a second embodiment of the invention will be described with reference to  FIG. 2 . 
         [0039]    In the first embodiment ( FIG. 1 ), the atmosphere temperature and the atmosphere humidity inside the control panel  100  are measured and the temperature command value and the humidity command value for adjusting the atmosphere temperature and the atmosphere humidity inside the control panel  100  are set based on the measured atmosphere temperature and the measured atmosphere humidity. However, in the second embodiment, the oil mist concentration inside the control panel  100  is measured in addition to the atmosphere temperature and the atmosphere humidity, and the oil mist concentration is adjusted based on the measurement result. 
         [0040]    The machining tool according to the embodiment includes a concentration measurement unit  150  which measures the oil mist concentration inside the control panel  100  and a concentration adjustment unit  152  which adjusts the oil mist concentration inside the control panel  100  in addition to the configuration of the machining tool of the first embodiment. 
         [0041]    The concentration measurement unit  150  is configured as a piezo balance type dust measurement unit which is provided inside the control panel  100 , and generates oil mist concentration information based on the measured oil mist concentration so as to output the oil mist concentration information to the atmosphere control unit  120 . The concentration adjustment unit  152  is configured as an air filter which filters air inside the control panel  100 , and receives the oil mist concentration command from the atmosphere control unit  120  so as to adjust the oil mist concentration inside the control panel  100 . 
         [0042]    Further, the temperature command value, the humidity command value, and the oil mist concentration command value are respectively correlated with the atmosphere temperature, the atmosphere humidity, and the oil mist concentration and are stored in a table format in the storage unit  122  of the atmosphere control unit  120 . In  FIG. 2 , the temperature command value, the humidity command value, and the oil mist concentration command value are respectively correlated with the atmosphere temperature, the atmosphere humidity, and the oil mist concentration every predetermined temperature range, every predetermined humidity range, and every predetermined oil mist concentration range, and the temperature command value, the humidity command value, and the oil mist concentration command value stored in the storage unit  122  are extracted based on the temperature information, the humidity information, and the oil mist concentration information input from the temperature measurement unit  130 , the humidity measurement unit  140 , and the concentration measurement unit  150  which respectively measure the temperature, the humidity, and the oil mist concentration inside the control panel  100 . 
         [0043]    Then, the atmosphere control unit  120  extracts the temperature command value, the humidity command value, and the oil mist concentration command value stored in the storage unit  122  based on the temperature information, the humidity information, and the oil mist concentration information input from the temperature measurement unit  130 , the humidity measurement unit  140 , and the concentration measurement unit  150 . The command output unit  124  generates the temperature command, the humidity command, and the oil mist concentration command based on the extracted temperature command value, the extracted humidity command value, and the extracted oil mist concentration command value, and outputs the temperature command, the humidity command, and the oil mist concentration command to the temperature adjustment unit  132 , the humidity adjustment unit  142 , and the concentration adjustment unit  152 . In this way, the atmosphere temperature, the atmosphere humidity, and the oil mist concentration inside the control panel  100  are adjusted by the temperature adjustment unit  132 , the humidity adjustment unit  142 , and the concentration adjustment unit  152 . 
         [0044]    In addition, the temperature command value, the humidity command value, and the oil mist concentration command value are respectively correlated with the atmosphere temperature, the atmosphere humidity, and the oil mist concentration and are stored in a table format in the storage unit  122  shown in  FIG. 2 , but the correlation is not limited to the example of FIG.  2 . For example, in  FIG. 2 , the temperature command value, the humidity command value, and the oil mist concentration command value are respectively correlated with the atmosphere temperature, the atmosphere humidity, and the oil mist concentration while the temperature range, the humidity range, and the oil mist concentration range are respectively set to 10° C., 10%, and 10%. However, there is no need to fix the temperature range, the humidity range, and the oil mist concentration range. For example, the temperature range, the humidity range, and the oil mist concentration range may be changed according to the temperature zone, the humidity zone, and the oil mist concentration zone. In that case, the temperature range, the humidity range, and the oil mist concentration range may be set based on the characteristics of the temperature adjustment unit  132 , the humidity adjustment unit  142 , and the concentration adjustment unit  152  or the temperature range, the humidity range, and the oil mist concentration range may be set based on an experiment or the like. Further, the invention is not limited to the table form shown in  FIG. 2 . For example, the storage unit  122  may store a relational expression for obtaining the temperature command value, the humidity command value, and the oil mist concentration command value from the atmosphere temperature, the atmosphere humidity, and the oil mist concentration. 
         [0045]    In the case of the control panel  100  with the above-described configuration, in addition to the advantage of the control panel  100  described in the first embodiment, the oil mist concentration inside the control panel can be adjusted even when the machining tool power supply is not turned on, that is, when the machining tool is not operated. 
         [0046]    Next, a machining tool according to a third embodiment of the invention will be described with reference to  FIG. 3 . 
         [0047]    In the first embodiment ( FIG. 1 ), the atmosphere temperature and the atmosphere humidity inside the control panel  100  are measured and the temperature command value and the humidity command value for adjusting the atmosphere temperature and the atmosphere humidity inside the control panel  100  are set based on the measured atmosphere temperature and the measured atmosphere humidity. However, in the third embodiment, a ventilation unit  180  is provided so as to adjust the atmosphere temperature and the atmosphere humidity inside the control panel  100 . 
         [0048]    The machining tool according to the embodiment includes the ventilation unit  180  which ventilates the air inside the control panel  100 , instead of the temperature adjustment unit  132  and the humidity adjustment unit  142  of the first embodiment ( FIG. 1 ). The ventilation unit  180  is provided in the outer wall of the control panel, and includes an inlet port provided with a filter and a fan provided in an outlet port. The ventilation unit receives a ventilation command from the atmosphere control unit  120 , and ventilates the air inside the control panel  100  by controlling, for example, the rotation speed of the fan so as to adjust the temperature and the humidity inside the control panel  100 . 
         [0049]    Further, as shown in  FIG. 3 , the ventilation command value is correlated with the atmosphere temperature and the atmosphere humidity and is stored in a table format in the storage unit  122  of the atmosphere control unit  120 . In  FIG. 3 , the ventilation command value is correlated with the atmosphere temperature and the atmosphere humidity every predetermined temperature range and every predetermined humidity range and is stored in a table format. Thus, the ventilation command value stored in the storage unit  122  can be extracted based on the temperature information and the humidity information which are respectively input from the temperature measurement unit  130  and the humidity measurement unit  140  which respectively measure the temperature and the humidity inside the control panel  100 . 
         [0050]    The atmosphere control unit  120  extracts the ventilation command value stored in the storage unit  122  based on the temperature information and the humidity information input from the temperature measurement unit  130  and the humidity measurement unit  140 . The command output unit  124  generates a ventilation command based on the extracted ventilation command value so as to output the ventilation command to the ventilation unit  180 . When the air inside the control panel  100  is ventilated in this way, the atmosphere temperature and the atmosphere humidity are adjusted by the ventilation unit  180 . The other configurations are the same as those of the first embodiment. 
         [0051]    Next, a machining tool according to a fourth embodiment of the invention will be described with reference to  FIG. 4 . 
         [0052]    In the second embodiment ( FIG. 2 ), the atmosphere temperature, the atmosphere humidity, and the oil mist concentration inside the control panel  100  are measured, and the temperature command value, the humidity command value, and the oil mist concentration command value are set so as to adjust the atmosphere temperature, the atmosphere humidity, and the oil mist concentration inside the control panel  100  based on the measured atmosphere temperature, the measured atmosphere humidity, and the measured oil mist concentration. However, in the fourth embodiment, a ventilation unit is provided so as to adjust the atmosphere temperature, the atmosphere humidity, and the oil mist concentration inside the control panel  100 . 
         [0053]    The machining tool according to the embodiment includes a ventilation unit  180  which ventilates the air inside the control panel  100  instead of the temperature adjustment unit  132 , the humidity adjustment unit  142 , and the concentration adjustment unit  152  of the second embodiment ( FIG. 2 ). The ventilation unit  180  is provided on the outer wall of the control panel, and includes an inlet port provided with a filter and a fan provided in an outlet port. The ventilation unit receives a ventilation command from the atmosphere control unit  120 , and ventilates the air inside the control panel  100  by controlling, for example, the rotation speed of the fan so as to adjust the temperature, the humidity, and the oil mist concentration inside the control panel  100 . 
         [0054]    Further, as shown in  FIG. 4 , the ventilation command value is correlated with the atmosphere temperature, the atmosphere humidity, and the oil mist concentration and is stored in a table format in the storage unit  122  of the atmosphere control unit  120 . In  FIG. 4 , the ventilation command value is correlated with the atmosphere temperature, the atmosphere humidity, and the oil mist concentration every predetermined temperature range, every predetermined humidity range, and every predetermined oil mist concentration range and the ventilation command value stored in the storage unit  122  is extracted based on the temperature information, the humidity information, and the oil mist concentration information respectively input from the temperature measurement unit  130 , the humidity measurement unit  140 , and the concentration measurement unit  150  which respectively measure the temperature, the humidity, and the oil mist concentration inside the control panel  100 . 
         [0055]    The atmosphere control unit  120  extracts the ventilation command value based on the temperature information, the humidity information, and the concentration information input from the temperature measurement unit  130 , the humidity measurement unit  140 , and the concentration measurement unit  150 . The command output unit  124  generates a ventilation command based on the extracted ventilation command value so as to output the ventilation command to the ventilation unit  180 . When the air inside the control panel  100  is ventilated in this way, the atmosphere temperature, the atmosphere humidity, and the oil mist concentration are adjusted. The other configurations are the same as those of the second embodiment. 
         [0056]    Next, a machining tool according to a fifth embodiment of the invention will be described with reference to  FIG. 5 . 
         [0057]    In the second embodiment ( FIG. 2 ), the atmosphere temperature, the atmosphere humidity, and the oil mist concentration inside the control panel  100  are measured, and the temperature command value, the humidity command value, and the oil mist concentration command value are set so as to adjust the atmosphere temperature, the atmosphere humidity, and the oil mist concentration inside the control panel  100  based on the measured atmosphere temperature, the measured atmosphere humidity, and the measured oil mist concentration. However, in the fifth embodiment, a configuration of recording each of the measured atmosphere temperature, the measured atmosphere humidity, and the measured oil mist concentration is provided. 
         [0058]    The machining tool according to the embodiment includes a measurement information recording unit  190 , in addition to the configuration of the machining tool of the second embodiment ( FIG. 2 ). The measurement information recording unit  190  stores the measurement information on the atmosphere temperature, the atmosphere humidity, and the oil mist concentration inside the control panel  100  which are measured by the temperature measurement unit  130 , the humidity measurement unit  140 , and the concentration measurement unit  150 . 
         [0059]    The measurement information recording unit  190  is connected to the machining tool control unit  110 , and receives the measurement information (the temperature information, the humidity information, and the oil mist concentration information) transmitted from the machining tool control unit  110  so as to record the measurement information on a memory (not shown). Here, the measurement information is transmitted from the atmosphere control unit  120  to the machining tool control unit  110 . The measurement information recorded in the memory can be checked while being read and displayed at an appropriate timing when the user operates the user interface unit  170 . Further, the measurement information can be stored in an external storage medium via an interface (not shown) and may be used to analyze the state of the machining tool. The other configurations are the same as those of the other embodiments. 
         [0060]    In the control panel  100  with the above-described configuration, various measurement information involved with the atmosphere of the control panel  100  can be stored, in addition to the advantages of the control panel  100  described in the above-described embodiments, and hence these information can be used for various purposes. 
         [0061]    Then, the atmosphere control unit  120  extracts the temperature command value, the humidity command value, and the oil mist concentration command value stored in the storage unit  122  based on the temperature information, the humidity information, and the oil mist concentration information input from the temperature measurement unit  130 , the humidity measurement unit  140 , and the concentration measurement unit  152 . The command output unit  124  generates the temperature command, the humidity command, and the oil mist concentration command based on the extracted temperature command value, the extracted humidity command value, and the extracted oil mist concentration command value, and outputs the temperature command, the humidity command, and the oil mist concentration command to the temperature adjustment unit  132 , the humidity adjustment unit  142 , and the concentration adjustment unit  152 . In this way, the atmosphere temperature, the atmosphere humidity, and the oil mist concentration inside the control panel  100  are adjusted by the temperature adjustment unit  132 , the humidity adjustment unit  142 , and the concentration adjustment unit  152 . The other configurations are the same as those of the second embodiment. 
         [0062]    Next, a machining tool according to a sixth embodiment of the invention will be described with reference to  FIG. 6 . 
         [0063]    In the first embodiment ( FIG. 1 ), the user interface unit  170  is connected to the atmosphere control unit  120  via the machining tool control unit  110 . However, in the embodiment, the user interface unit  170  is directly connected to the machining tool control unit  110  and the atmosphere control unit  120  (that is, without interposing the machining tool control unit  110  therebetween). 
         [0064]    In the machining tool according to the embodiment, in addition to the configuration of the machining tool of the first embodiment, the communication line between the user interface unit  170  and the machining tool control unit  110  and the communication line between the user interface unit  170  and the atmosphere control unit  120  are provided separately. 
         [0065]    Each of those two communication lines is formed of a bus constituting an input/output interface, and the user interface unit  170  is configured to separately control a display command input from the communication lines and an operation command output to the respective communication lines. The user interface unit  170  may include an operation unit and a display unit dedicated for each communication line in terms of hardware or software or may control the input/output by switching the communication line. 
         [0066]    With such a configuration, the user may instruct the atmosphere control unit  120  to change the command value through the operation of the user interface unit  170  and can check the atmosphere temperature and the atmosphere humidity inside the control panel  100  by displaying the atmosphere temperature and the atmosphere humidity on the user interface unit  170  even when the machining tool power supply is stopped.