mwirth-epo/epo-nmt-datasets huggingface dataset:
9.根据前述权利要求中任一项所述的装置，其中，所述装置被配置为基于对象的确定的长度、对象的宽度和对象的面积中的一个或更多个，将在所述至少一幅图像中识别出的对象分类为纤维或原纤维。
The apparatus of any preceding claim, wherein the means are configured to classify an object recognized in the at least one image as a fibre or a fibril on the basis of one or more of determined length of the object, width of the object, and area of the object.
10.根据前述权利要求中任一项所述的装置，其中，所述装置被配置为基于纤维的确定的面积或确定的圆，将在所述至少一幅图像中识别出的纤维分类为非原纤化纤维或原纤化纤维。
The apparatus of any preceding claim, wherein the means are configured to classify a fibre recognized in the at least one image into the non-fibrillated fibre or the fibrillated fibre on the basis of a determined area or a determined circle of the fibre.
11.根据前述权利要求中任一项所述的装置，其中，控制纤维磨浆包括控制被分析并磨浆的纸浆批料的进一步处理进入进一步或循环磨浆阶段或者进入纸浆磨浆后的随后处理阶段。
The apparatus of any preceding claim, wherein the controlling fibre refining comprises controlling of further processing of pulp batch being analysed and refined into a further or a recurrent refining stage or to a subsequent process stage after the pulp refining.
12.根据前述权利要求中任一项所述的装置，其中，控制纤维磨浆包括基于控制参数来控制用于纤维纸浆的化学原纤化的化学处理。
The apparatus of any preceding claim, wherein the controlling fibre refining comprises controlling chemical treatment for chemical fibrillation of the fibrous pulp on the basis of the control parameter.
13.根据前述权利要求中任一项所述的装置，其中，所述装置被配置为基于纸浆中原纤化纤维与所有纤维或非原纤化纤维之间的关系和/或通过在纸浆磨浆中使用的能量来分析内部原纤化。
The apparatus of any preceding claim, which the means are configured to analyse internal fibrillation on the basis of the relation between fibrillated fibres and all fibres or non-fibrillated fibres in the pulp and/or by energy used in the refining of the pulp.
14.根据前述权利要求7至13中任一项所述的装置，其中，所述装置还被配置用于执行根据权利要求1至6中任一项所述的方法。
The apparatus of any preceding claim 7 to 13, wherein the means are further configured for performing the method of any one of claims 1 to 6.
15.一种纤维纸浆处理系统，其特征在于，所述纤维纸浆处理系统包括一组纸浆处理装置和根据前述权利要求7至14中任一项所述的装置。
A fibrous pulp processing system, characterized in that the fibrous pulp processing system comprises a set of pulp processing devices and the apparatus of any preceding claim 7 to 14.
图2是根据本公开实施例的图1的无人潜航器的组件图；
FIG. 2 is a diagram of the components of the unmanned submersible vehicle of FIG. 1 in accordance with an embodiment of the disclosure;
图3是根据本公开实施例的用于勘测井的无人潜航器的操作图；并且
FIG. 3 is diagram of the operation of an unmanned submersible vehicle for surveying a well in accordance with an embodiment of the disclosure; and
图4是根据本公开实施例的使用无人潜航器用于勘测井的流程框图。
FIG. 4 is a block diagram of a process for surveying a well using an unmanned submersible vehicle in accordance with an embodiment of the disclosure.
参照示出本公开实施例的附图来更加全面地描述本公开。
The present disclosure will be described more fully with reference to the accompanying drawings, which illustrate embodiments of the disclosure.
然而，本公开可以以许多不同形式实施并且不应被解释为局限于所示出的实施例。
This disclosure may, however, be embodied in many different forms and should not be construed as limited to the illustrated embodiments.
相反的是，提供这些实施例使得本公开将是彻底且完整的，并将向本领域技术人员充分传达本公开的范围。
Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
本公开实施例包括一种用于勘测地下井的无人潜航器。
Embodiments of the disclosure include an unmanned submersible vehicle for use in surveying subsurface wells.
无人潜航器可以插入井中并且可以在井中的测量位置处和当穿过井时以及位于井时获取测量值。
The unmanned submersible vehicle may be inserted into a well and may acquire measurements at measurement locations in the well and while traversing the well and at.
无人潜航器可以包括推进单元，该推进单元具有推进器(螺旋桨)和臂，该臂以能枢转的方式附接至潜航器的主体。
The unmanned submersible vehicle may include propulsion units having propellers and an arm pivotably attached to a body of the vehicle.
当无人潜航器静止时(即，当推进单元没有动力时)，推进单元的推进器可以用于测量流体的流速。
The propellers of the propulsion units may be used to measure flow velocity of a fluid when the unmanned submersible vehicle is stationary (that is, while the propulsion units are unpowered).
该无人潜航器可以包括测量单元(用于测量温度、压力和梯度)、控制单元、微控制器单元、动力单元以及定位单元。
The unmanned submersible vehicle may include a measurement unit for measuring temperature, pressure, and gradient, a control unit, a microcontroller unit, a power unit, and a location unit.
在一些实施例中，可以通过基站从地面远程控制无人潜航器或者无人潜航器可以在井中自主移动。
The unmanned submersible vehicle may be controlled remotely from the surface via a base station or, in some embodiments, may move autonomously in the well.
在获取测量值之后，无人潜航器可以通过跟随从井中流出的流体而离开井。
After acquiring measurements, the unmanned submersible vehicle may exit the well by following fluid flow out of the well
根据本公开实施例，图1描述了用于勘测地下井的无人潜航器100。
FIG. 1 depicts an unmanned submersible vehicle 100 for surveying subsurface wells in accordance with an embodiment of the disclosure.
可以理解的是，例如，无人潜航器100可以包括设计用于能够潜入水、油、气以及具有水、油、气的任何组合的混合物中的组件。
As will be appreciated, for example the unmanned submersible vehicle 100 may include components designed for submergibility in water, oil, gas, and mixtures of having any combinations thereof.
另外，无人潜航器100可以包括设计成可承受井下条件(例如，温度和压力)并且在该井下条件下操作的组件。
Additionally, the unmanned submersible vehicle 100 may include components designed to withstand and operate in downhole conditions (for example, temperature and pressure).
如图1所示，无人潜航器100可以包括主体102、相机104以及推进单元106。
As shown in FIG. 1, the unmanned submersible vehicle 100 may include a body 102, a camera 104, and propulsion units 106.
主体102可以部分包围或完全包围无人潜航器100的多个组件，这些组件的细节将在下文描述。
The body 102 may partially or fully enclose multiple components of the unmanned submersible vehicle 100, the details of which are described below.
主体102可以大体上为椭圆形，或者在其他实施例中可以为矩形。
The body 102 may be generally oval-shaped or, in other embodiments, rectangular-shaped.
在一些实施例中，主体102和推进单元106的尺寸可以设定成使无人潜航器100能够插入并穿越通过井的井眼，所述井包括井的竖直段、水平段和偏斜段。
In some embodiments, the body 102 and propulsion units 106 may be sized to enable the unmanned submersible vehicle 100 to enable insertion into and traversal through a wellbore of a well, including vertical, horizontal, and deviated sections of the well.
在一些实施例中，无人潜航器100可以具有约2-3/8英寸(60.34毫米)的宽度，约2-3/8英寸(60.34毫米)的长度和约2-3/8英寸(60.34毫米)的高度。
In some embodiments, the unmanned submersible vehicle 100 may have a width of about 2⅜ inches (60.34 millimeters), a length of about 2⅜ inches (60.34 millimeters), and a height of about 2⅜ inches (60.34 millimeters).
在一些实施例中，如图1所示，无人潜航器100可以包括四个推进单元106。
In some embodiments, as shown in FIG. 1, the unmanned submersible vehicle 100 may include four propulsion units 106.
推进单元106可以推动无人潜航器100通过流体，并且如下文所述，当无人潜航器100静止时，推进单元106可以用于测量流体的流速。
The propulsion units 106 may propel the unmanned submersible vehicle 100 through a fluid and, as described below, may be used to measure flow velocity of a fluid when the unmanned submersible vehicle 100 is stationary.
每个推进旋转器106可以包括推进器108、与推进器108联接的电动机(未示出)、以及臂110。
Each propulsion spinner 106 may include a propeller 108, an electric motor (not shown) coupled to the propeller 108, and an arm 110.
推进器108可以通过臂110与主体102相联接。
The propeller 108 and may be coupled to the main body 102 via the arm 110.
臂110可以以能枢转的方式附接至主体102，使得每个推进单元106可以绕轴线枢转以定位相应的推进器108。
The arms 110 may be pivotably attached to the body 102, such that each propulsion unit 106 may be pivoted around an axis to position the respective propeller 108.
臂110可以通过电动万向节或其他能使推进单元106旋转的组件以能枢转的方式附接。
The arms 110 may be pivotably attached via motorized gimbals or other components that enable rotation of the propulsion units 106.
当无人潜航器静止(即，当推进单元106没有动力时)时，无人潜航器100可以将推进单元中的两个枢转进流体流(依赖于井的水平到竖直(H/V)结构)中，使得可以根据已知技术(例如，基于推进器在流体流中旋转时的转数和接触区域的截面积)通过根据流体流中旋转器的旋转来确定流速的测量值。
When the unmanned submersible vehicle is stationary (that is, when the propulsion units 106 are unpowered), the unmanned submersible vehicle 100 may pivot two of the propulsion units into the fluid flow (relying on the horizontal to vertical (H/V) structure of the well), such that the measurement of the flow velocity may be determined according to the rotation of the spinners in the fluid flow according to known techniques (for example, based on the number of turns of the propellers as they rotate in the fluid flow and the cross-sectional area of the contacted area).
在一些实施例中，推进单元106可以各自包括发电机或与发电机相联接，该发电机将推进器108的旋转转换为电能。
In some embodiments, the propulsion units 106 may each include or be coupled to a generator that converts rotation of the propellers 108 into electrical energy.
在这样的实施例中，用于测量流速的两个推进器的旋转还可以提供电能以给无人潜航器的电池充电。
In such embodiments, the rotation of the two propellers used to measure flow velocity may also provide electrical energy to charge a battery of the unmanned submersible vehicle.
相机104可以拍摄无人潜航器100周围区域(例如，无人潜航器前方的区域)的静态图像、视频或两者。
The camera 104 may capture still images, video, or both of areas surrounding the unmanned submersible vehicle 100 (for example, the area in front the unmanned submersible vehicle).
相机104可以用于提供无人潜航器100的路线的视觉确认、井的视觉检查以及其他视觉操作。
The camera 104 may be used to provide visual confirmation of a route of the unmanned submersible vehicle 100, visual inspection of a well, and other visual operations.
在一些实施例中，相机104可以拍摄静态图像、视频或两者。
In some embodiments, the camera 104 may capture still images, video, or both.
在这样的实施例中，相机104可以在无人潜航器获取测量值之前用于提供井段中测量位置的视觉确认。
In such embodiments, the camera 104 may be used to provide visual confirmation of a measurement location in a section of a well before the unmanned submersible vehicle acquires measurements.
图2描述了无人潜航器100的各种组件，尽管应当理解的是，为了清楚起见可以省略一些组件。
FIG. 2 depicts various components of the unmanned submersible vehicle 100, although it should be appreciated that some components may be omitted for clarity.
无人潜航器100的其他实施例可以包括未在图2中示出的附加组件。
Other embodiments of the unmanned submersible vehicle 100 may include additional components not illustrated in FIG. 2.
如图2所示，无人潜航器100可以包括测量单元200、定位单元202、控制单元204、微控制器单元206、动力单元208和数据存储单元210。
As shown in FIG. 2, the unmanned submersible vehicle 100 may include a measurement unit 200, a location unit 202, a control unit 204, a microcontroller unit 206, a power unit 208, and a data storage unit 210.
测量单元200可以包括用于测量温度、压力、梯度以及其他适合参数的一个或多个测量组件。
The measurement unit 200 may include one or more measurement components for measuring temperature, pressure, gradient, and other suitable parameters.
例如，在一些实施例中，测量单元200可以包括分布式温度传感(DTS)系统212、分布式声学传感(DAS)系统214、数字温度和压力探测器216。
In some embodiments, for example, the measurement unit 200 may include a distributed temperature sensing (DTS) system 212, a distributed acoustic sensing (DAS) system 214, a digital temperature and pressure sonde 216.
可以理解的是，分布式温度传感(DTS)系统212可以包括本领域中已知的组件，以使得能够使用光纤作为线性传感器来测量温度。
As will be appreciated, the distributed temperature sensing (DTS) system 212 may include components known in the art to enable the measurement of temperature using optical fibers as linear sensors.
还可以理解的是，分布式声学传感(DAS)系统214可以包括本领域中已知的组件，以使得能够使用光纤和声频信号来测量温度用以测量温度变化。
As will also be appreciated, the distributed acoustic sensing (DAS) system 214 may include components known in the art to enable the measurement of temperature using optical fibers and acoustic frequency signals to measure temperature variations.
数字温度和压力探测器216可以使用本领域已知的组件(诸如压电传感器)数字地测量温度和压力。
The digital temperature and pressure sonde 216 may digitally measure temperature and pressure using components known in the art, such as piezoelectric sensors.
定位单元202可以包括接收器220，接收器220用于与基于卫星的导航系统(诸如，全球定位系统(GPS)、全球卫星导航系统(格洛纳斯)(GLONASS))进行通信。
The location unit 202 may include a receiver 220 for communication with a satellite-based navigation system, such as the Global Positioning System (GPS), the Globalnaya Navigazionnaya Sputnikovaya Sistema (GLONASS).
在一些实施例中，如本领域已知的，定位单元202可以包括套管接箍定位器(CCL)、伽马射线测井仪或它们的组合。
In some embodiments, the location unit 202 may include, as known in the art, a casing collar locator (CCL), a gamma ray logging tool, or a combination thereof.
可以理解的是，CCL和伽马射线测井仪可以用于确定井眼中的深度。
As will be appreciated, the CCL and gamma ray logging tool may be used to determine a depth in a wellbore.
在一些实施例中，定位单元202可以包括陀螺仪。
In some embodiments, the location unit 202 may include gyroscope.
定位单元202可以使用这些组件中的一个或多个来确定无人潜航器100的位置。
The location unit 202 may use one or more of these components to determine a location of the unmanned submersible vehicle 100.
该位置可以被无人潜航器100的其他单元使用，诸如控制单元204。
The location may be used by other units of the unmanned submersible vehicle 100, such as the control unit 204.
该位置可以被传输到地面处的计算机以远程控制无人潜航器100。
The location may be transmitted to a computer at the surface for remote control of the unmanned submersible vehicle 100.
如图2所示，控制单元204可以包括无线应答器224。
As shown in FIG. 2, the control unit 204 may include a wireless transponder 224.
无线应答器可以通过适合的无线通信协议和技术与地面上的计算机无线通信(例如，接收和发送)，以能够远程控制无人潜航器。
The wireless transponder may wirelessly communicate (for example, receive and transmit) with a computer on the surface via suitable wireless communication protocols and technologies to enable remote control of the unmanned submersible vehicle.
无线应答器可以从地面上的基站接收远程遥控命令，并且可以给基站发送有关无人潜航器100的数据(诸如潜航器100的位置等)。
The wireless transponder may receive remote control commands from a base station at the surface and may transmit data about the unmanned submersible vehicle 100 (such the location of the unmanned submersible vehicle 100) to the base station.
本发明涉及一种可作为自攻螺钉来使用或者也可以作为螺栓来使用的外螺纹部件，所述自攻螺钉用于针对未切有内螺纹的底孔在形成螺纹的同时进行旋入及紧固，所述螺栓用于针对附着有涂膜、飞溅物(spatter)等异物的内螺纹(螺帽等)在去除异物的同时可旋入及紧固。
The present invention relates to an external screw member which can be used as a self-tapping screw adapted to be screwed into and tightened to a prepared hole in which an internal or internal thread is not formed, while forming a screw thread, or which is also available as a bolt capable of being screwed into and tightened to an internal screw (nut, etc.) to which foreign matter such as a paint film, spatter is adhered, while removing the foreign matter.
自攻螺钉之所以被广泛使用是因为无需预先在底孔实施自攻加工，但是要求形成底孔时的旋入扭矩尽可能小。
Self-tapping screws do not require tapping in a prepared hole in advance and hence are widely used, but require that screw driving torque at the time of forming a prepared hole be as low as possible.
作为降低旋入扭矩的自攻螺钉，已知例如专利文献1那样缩小螺纹与底孔的接触面积的外螺纹。
As a self-tapping screw for which screw driving torque is made low, there has been known an external screw in which a contact area between a screw thread and a prepared hole is made small, as illustrated in Patent Literature 1, for example.
该专利文献1所述的外螺纹由螺钉头部侧的第一区域螺纹部和螺钉前端部侧的第二区域螺纹部构成，在第二区域螺纹部从牙底的始端部至牙峰牙顶的终端部形成牙峰高度增大的螺钉自攻螺钉部，来使螺纹高度在圆周上发生变化，从而抑制切屑的产生。
The external screw described in this Patent Literature 1 has a first zone screw thread portion at the side of a screw head portion, and a second zone screw thread portion at the side of a screw tip end portion, wherein a self-tapping threaded portion with a thread height increased from a leading end of a thread at a root to a trailing end thereof at a crest is formed in the second zone screw thread portion, so that the generation of cutting chips is suppressed by changing the height of the screw thread on the circumference of the threaded portion.
但是，当内螺纹的长度较长时，形成的螺纹数会增加，因此存在如下问题，即，在第二区域螺纹部的螺钉自攻螺钉部的空间内，切屑的排出无法顺利进行而使切屑蓄积在内螺纹内，进而造成旋入扭矩急剧上升的问题。
However, when the length of an internal screw is long, the number of screw threads to be formed increases, and hence, there has been a problem that in a space of the self-tapping threaded portion in the second zone screw thread portion, cutting chips are not discharged well, but accumulate in the internal screw, as a result of which a screw driving torque increases abruptly.
此外，专利文献2中公开了一种具备对内螺纹进行加工的加工螺钉部、和具有标准螺纹的标准螺钉部的螺钉自攻螺钉，其中从加工螺钉部至标准螺钉部形成有连续的螺钉条，且在加工螺钉部的螺钉条上设置外径及有效直径比标准螺纹大的多个加工螺纹。
In addition, Patent Literature 2 discloses a self-tapping screw which includes a machining screw portion for machining an internal screw thread, and a standard screw portion having a standard screw thread, wherein a screw thread continuously extending from the machining screw portion to the standard screw portion, and the machining screw portion is formed with a plurality of machining screw threads whose outside diameters and effective diameters are larger than those of the standard screw thread.
作为加工螺钉部，在圆周上且在多个加工螺纹间形成外径及有效直径比标准螺纹小的多个牙峰退刀槽顶，从而形成出加工螺纹与退刀槽螺纹连续变化的截面形状，由此降低加工时的切屑的产生，进而抑制由加工螺钉部而引起的加工时的操作扭矩(旋入扭矩)的上升。
A plurality of escape screw threads, whose outside diameters and effective diameters are smaller than those of the standard screw thread, are formed on the circumference of the machining screw portion between a plurality of machining screw threads, and the machining screw threads and the escape screw threads are formed into a continuously changing cross sectional shape, so that the generation of cutting chips at the time of machining is reduced, and an increase in the operation torque (driving torque) at the time of machining by the machining screw portion is suppressed.
然而，在该专利文献2中，加工螺钉部是从前端侧利用一定的外径的加工螺纹来对内螺纹进行加工的结构，因此虽然通过退刀槽螺纹的存在来抑制操作扭矩的上升，但是从加工初期急剧加大旋入扭矩，进而导致操作性差。
With such a configuration, the existence of the escape screw threads serves to suppress the increase of an operation torque, but a driving torque will be rapidly applied to the self-tapping screw from an early stage of machining, and so, operability of the self-tapping screw is bad.
此外，还会产生切屑容易堵在退刀槽螺纹部分的空间，从而与专利文献1同样地因切屑的堵塞而造成旋入扭矩上升之类的问题。
In addition, cutting chips are prone to accumulate in the spaces or gaps of the escape screw threads, thus posing a problem that the driving torque is increased due to the accumulation of the chips, as in the case of Patent Literature 1.
此外，由于成为加工螺纹与退刀槽螺纹连续变化的结构，因此螺钉加工用铸模的工具形状复杂，而且有可能造成由多个加工螺纹一次形成的内螺纹的螺纹进一步变形而使内螺纹的螺纹形变得不完整，进而难以进行稳定的紧固。
Moreover, because the machining screw threads and the escape screw threads are configured to continuously change, a tool shape of a screw forming mold is complicated, and further, the screw threads of the internal screw once formed may be caused to further deform by the plurality of machining screw threads, thus giving rise to a fear that the shape of the screw threads of the internal screw may become imperfect or insufficient.
另一方面，可以考虑针对附着有涂膜等异物的内螺纹(螺帽等)使用专利文献1、专利文献2所述的自攻螺钉，从而通过自攻部来去除异物的同时进行旋入。
On the other hand, it is considered that the self-tapping screw as described in Patent Literature 1 or Patent Literature 2 is used for an internal screw (a nut, etc.) to which foreign matter such as a paint film, etc., has been adhered, wherein the self-tapping screw is screwed into the internal screw, while removing the foreign matter by means of the tapping portion.
然而，在专利文献1的外螺纹的情况下，螺钉自攻螺钉部的第二区域螺纹部的空间狭小，异物的排出无法顺利地排出而卡住。
However, in the case of the external screw described in Patent Literature 1, the spaces or gaps between the second zone screw threads of the self-tapping screw portion are narrow, so that foreign matter can not be discharged well, thus causing jamming or biting of the foreign matter.
此外，在专利文献2的自攻螺钉(self-tapping screw)的情况下，剥离的异物也会无法顺利地排出，从而造成退刀槽螺纹部孔隙堵塞而卡住。
In addition, in the case of the self-tapping screw described in Patent Literature 2, too, exfoliated foreign matter can not be discharged well, so that the escape screw threads are clogged and jammed.
另一方面，作为针对附着有涂膜等异物的内螺纹(螺帽等)在可去除异物的同时旋入的螺栓，研发出例如专利文献3所述的螺栓。
On the other hand, as a bolt which can be screwed into an internal screw (a nut, etc.) with foreign matter such as a paint film or the like adhered thereto, while removing the foreign matter, there has been developed a bolt as described in Patent Literature 3, for example.
该螺栓在螺纹的至少压力侧牙侧(flank)部分地具备对内螺纹侧的涂膜进行剥离的凸部，并且通过凸部能够在对涂料进行剥离的同时进行旋入。
This bolt is partially provided, on at least a pressure side flank of each screw thread thereof, with a convex portion which exfoliates the paint film at the side of the internal screw, and the bolt is configured to be capable of being screwed into the internal screw, while exfoliating the paint film by the convex portion.
但是，当该螺栓不是作为在底孔形成内螺纹的同时进行旋入的自攻螺钉而是以原本的状态作为自攻螺钉来使用时，会造成切屑增多并且旋入扭矩也会增大。
However, this bolt is not a self-tapping screw which is screwed into a prepared hole, while forming an internal screw in the prepared hole, and when the bolt is used as a self-tapping screw as it is, a lot of cutting chips will be produced, and hence, a driving torque will also become large.
专利文献1：日本专利第4520771号公报
Patent Literature 1: Japanese Patent No. 4,520,771 Patent Literature 2: Japanese Patent Application Laid-Open Publication No. 2000-35016 Patent Literature 3: Japanese Patent No. 3871483
本发明的目的在于提供一种可作为自攻螺钉来使用或者还可作为去除附着在内螺纹上的异物的同时进行旋入的螺栓来使用的外螺纹部件，在作为自攻螺钉来使用的情况下，可抑制旋入扭矩的上升并且还可抑制切屑的产生量，而且在使用于附着有异物的内螺纹的情况下，能够可靠地去除异物并且使其顺畅地排出来防止卡住。
The object of the present invention is to provide an external screw member which can be used as a self-tapping screw, or can also be used as a bolt adapted to be screwed into an internal screw, while removing foreign matter adhered thereto, wherein in cases where the external screw member is used as the self-tapping screw, it is possible not only to suppress an increase in driving torque, but also to reduce an amount of chips to be generated, whereas in cases where the external screw member is used for the internal screw with foreign matter adhered thereto, it is possible not only to remove the foreign matter in a reliable manner, but also to discharge it smoothly, thereby making it possible to prevent jamming or biting of the foreign matter.
为了达成上述目的，具有头部和从该头部直线延伸的轴部，在轴部，从所述头部侧朝向前端侧依次具备平行螺钉部和锥形螺钉部，在所述平行螺钉部和所述锥形螺钉部以同一螺距连续地设置有螺纹，在所述锥形螺钉部，所述螺纹以牙峰高度逐渐减小的形态设置而成，其特征在于，
In order to achieve the above-mentioned object, according to the present invention, there is provided a male screw member comprising a head and a shank linearly extending from the head, the shank having a parallel threaded portion and a tapered threaded portion formed in order from the head toward a tip end, a screw thread being continuously formed on the parallel threaded portion and the tapered threaded portion at the same pitch, and the screw thread in the tapered threaded portion being configured in a form in which a thread height becomes gradually smaller, wherein a convex portion protruding more radially outward than the crest of the screw thread is formed in at least one of the parallel threaded portion and the tapered threaded portion over the tapered threaded portion and the parallel threaded portion; and a screw driving side end face of the convex portion is configured to form an inclined plane which gradually rises from an end edge position of the end face at the side of the crest of the screw thread toward the crest of the convex portion in a direction opposite to a screw driving direction of the screw thread, to reach the crest of the convex portion.
所述锥形螺钉部至所述平行螺钉部，所述平行螺钉部和所述锥形螺钉部中的至少一个设置有与所述螺纹的顶部相比向径向外方突出的凸部，
In cases where the external screw member is used as a self-tapping screw, the screw thread of the tapered threaded portion of the external screw member gradually bites into an inner periphery of a prepared hole, while being screwed into the prepared hole, thereby to form an internal screw, and the internal screw is further machined or worked into a final internal screw thread shape by the convex portion formed in a portion extending from the tapered threaded portion to the parallel threaded portion, so that the screw thread of the parallel threaded portion is engaged and tightened with the screw thread of the internal screw thus formed.
所述凸部的旋入方向侧的端面成为如下的倾斜面，即，从该端面的所述螺纹的顶部侧的端缘位置朝向所述凸部的顶部，朝所述螺纹的旋入方向的相反方向逐渐立起直至所述凸部的顶部的倾斜面。
In addition, the screw driving side end face of the convex portion is configured to form the inclined plane which rises from the end edge position of the end face at the side of the crest of the screw thread toward the crest of the convex portion in a direction opposite to the screw driving direction in which the thread height gradually increases, to reach the crest of the convex portion.
作为自攻螺钉来使用的情况下，锥形螺钉部的螺纹旋入底孔并逐渐深入到底孔内周，从而逐步加工出内螺纹，并且通过设置在锥形螺钉部至平行螺钉部的部分的凸部，最终加工成内螺纹的螺纹峰形，从而以平行螺钉部的螺纹卡合在所成形的内螺纹的螺纹的方式被紧固。
With such a configuration, the screw driving side end face of the convex portion is not caught or struck in the prepared hole, so that the prepared hole performs plastic deformation in a smooth manner thereby to form the internal screw.
由于凸部的旋入方向侧的端面成为从该端面的所述螺纹的顶部侧的端缘位置朝向所述凸部的顶部，牙峰高度沿所述螺纹的旋入方向的相反方向逐渐增加的方向上立起直至所述凸部的顶部的倾斜面，因此不是挂到底孔上，而是以顺畅地塑性变形出底孔的方式来加工出内螺纹。
Accordingly, chips generated at that time are small, and besides, the chips can be made to stay in wide spaces around the screw thread between adjacent convex portions in which no convex portion exists, so that an increase in the torque required for screw driving can be suppressed, and the chips can also be discharged in a smooth manner.