Patent Description:
A grinder is a processing machine for grinding a workpiece by a grinding wheel, such as an emery wheel, to obtain the shape, the size or the precision machining surface required by the workpiece. In the process of grinding a workpiece by an existing grinder, the generated workpiece chippings can be accumulated on the grinding wheel and need to be removed, for example, the grinding wheel is washed with water, which is equivalent to troubles and inconvenience; and meanwhile, the grinding efficiency cannot be improved, and the abrasion of the grinding piece is reduced.

In fact, the application of ultrasonic technology has been widely used in cutting machines, taking the ultrasonic spindle as an example. It mainly utilizes the high-frequency vibration of the ultrasonic vibration source to enable the tool installed on the spindle to generate high-frequency oscillation, effectively reducing cutting resistance and separating particles on the surface of the workpiece one by one. When the workpiece is a hard and brittle material, such as glass, ceramic, zirconium dioxide, etc. While the ultrasonic processing machine is applied, chippings generated by the machining can be made to be thinner, and meanwhile the service life of the tool can be prolonged.

Therefore, how to configure the ultrasonic vibration source in the grinding machine enables the grinding wheel to utilize the high-frequency vibration of the ultrasonic vibration source in the workpiece grinding process, so that the workpiece chippings produced in the grinding process can fall off through the radial vibration of the grinding wheel, and the problem to be overcome by a related industry person is solved.

<CIT> discloses an ultrasonic processing device and a vibration unit thereof capable of completing axial and radial cutting at the same time without additional radial cutting process.

The main purpose of the invention is to provide an ultrasonic conduction grinding module, which can be directly built into a grinding machine or installed in a tool holder, so that workpiece chippings produced in the grinding process can fall off through radial high-frequency vibration formed by at least one grinding wheel under the action of the ultrasonic conduction grinding module, meanwhile, the grinding efficiency can be improved, and the abrasion of the grinding piece can be reduced.

The invention provides, according to claim <NUM>, an ultrasonic conduction grinding module, which comprises:.

In one embodiment, the steering member is made of metal, and the inner side of the steering member is adjacent to one of the second conductive sheets to form an electrical connection.

In one embodiment, the adapter ring is axially provided with a plurality of connecting holes, and once each connecting hole is penetrated by a connecting piece, it locked to a processing machine, a tool holder, or a flange of a grinding machine, to drive the ultrasonic conduction grinding module to rotate synchronously with the processing machine, tool holder or flange.

In one embodiment, the processing machine is a surface grinder, an outer diameter grinder or an inner hole grinder.

In one embodiment, the at least one grinding wheel comprises a first grinding wheel and a second grinding wheel; the first grinding wheel and the second grinding wheel are connected to the shaft rod, and the shaft rod is further provided with a spacer ring between the first grinding wheel and the second grinding wheel.

In order to achieve the aforementioned purpose, another technical solution, not part of the claimed invention, is:
An ultrasonic conduction grinding module, which comprises:.

In one embodiment not part of the claimed invention, the relay rod is made of metal, and the inner side of the relay rod is adjacent to one of the second conductive sheets to form an electrical connection.

In one embodiment not part of the claimed invention, the adapter ring is axially provided with a plurality of connecting holes, and once each connecting hole is penetrated by a connecting piece, it locked to a processing machine, a tool holder, or a flange of a grinding machine, to drive the ultrasonic conduction grinding module to rotate synchronously with the processing machine, tool holder or flange.

In one embodiment not part of the claimed invention, the processing machine is a surface grinder, an outer diameter grinder or an inner hole grinder.

In one embodiment not part of the claimed invention, the at least one grinding wheel comprises a first grinding wheel and a second grinding wheel; the first grinding wheel and the second grinding wheel are connected to the shaft rod, and the shaft rod is further provided with a spacer ring between the first grinding wheel and the second grinding wheel.

The technical solution provided by the invention has the beneficial effects that, radial high-frequency vibration is formed when the axial high-frequency vibration is transmitted to the conical body on the steering member in the complementary state, and also transmitted to the conical groove on the amplitude rod, so that the workpiece chippings produced by the workpiece in the grinding process can fall off under the action of the radial high-frequency vibration, meanwhile, the grinding efficiency can be improved, and the abrasion of the grinding piece can be reduced.

Specific technical content created by the present invention is further disclosed below in conjunction with the accompanying drawings, wherein:.

As shown in <FIG>, the first embodiment of the ultrasonic conduction grinding module provided by the present invention includes a vibration source <NUM>, a steering member <NUM>, an amplitude rod <NUM>, and at least one grinding wheel <NUM>.

As shown in <FIG> and <FIG>, the vibration source <NUM> includes a plurality of piezoelectric plates <NUM> and a conductive sheet group <NUM> having at least one first conductive sheet <NUM> and at least one second conductive sheet <NUM>. The conductive sheet group <NUM> is used for the piezoelectric plates <NUM> are formed in a parallel configuration. The piezoelectric plate <NUM> is provided for the insulating inner ring <NUM> to pass through, and an elastic body <NUM>, such as a polymer elastic material (such as rubber or silicone, etc.) is adjacent to the rear; a coupling member <NUM> (e.g., a screw) is threaded through the elastic body <NUM>, the insulating inner ring <NUM> and the steering member <NUM>, and are connected to the amplitude rod <NUM>, so that the vibration source <NUM> is axially connected to the amplitude rod <NUM>.

In another embodiment, when the coupling member <NUM> is made of insulating material, the arrangement of the insulating inner ring <NUM> can be omitted.

The steering member <NUM> is axially provided with a through hole <NUM> for the coupling member <NUM> to pass through. The steering member <NUM> is made of metal, such as copper or copper alloy. One side of the steering member <NUM>, for example, one of the inner sides adjacent to the second conductive plate <NUM>, is electrically connected, and the other side, such as the outer side, is provided with a conical body <NUM>.

The amplitude rod <NUM> is a T-shaped seat body, an adapter ring <NUM> is arranged on one side of the amplitude rod <NUM> in a radial protruding mode, for example, an adapter ring <NUM> is radially arranged on the inner side in a protruding mode, a plurality of connecting holes <NUM> are formed in the adapter ring <NUM> in the axial direction, and each connection hole <NUM> for a connection member (not shown) to be threaded and locked to a known processing machine, such as a spindle, a tool holder, or a flange of a grinding machine, etc., so that the ultrasonic conduction grinding module can synchronously rotate along with the spindle, the tool holder or the flange. The processing machine is selected from a surface grinder, an outside diameter grinder, or an internal bore grinder, and the like. Moreover, the other side of the amplitude rod <NUM>, such as the outer side, is axially extended with a shaft rod <NUM> for at least one grinding wheel <NUM>, and the inner side of the shaft rod <NUM> is axially provided with a conical groove <NUM> complementary to the conical body <NUM>; and the shaft rod <NUM> is also axially provided with a locking hole <NUM> connected to the conical groove <NUM> for locking the coupling member <NUM> (see <FIG>).

Please refer to <FIG> again, the grinding wheel <NUM> includes a first grinding wheel <NUM> and a second grinding wheel <NUM>. The first grinding wheel <NUM> has a fitting, such as a first sleeve hole <NUM> that fits snugly into the shaft rod <NUM>, while the second grinding wheel <NUM> also has a fitting, such as a second sleeve hole <NUM> that fits snugly into the shaft rod <NUM>. To separate the first grinding wheel <NUM> from the second grinding wheel <NUM>, the shaft rod <NUM> is further fitted between the first grinding wheel <NUM> and the second grinding wheel <NUM>, for example with a spacer ring <NUM>.

The first grinding wheel <NUM> and the second grinding wheel <NUM> can select grinding wheels with different meshes according to the grinding requirements. Therefore, when a workpiece, such as a milling cutter, can be initially ground on the first grinding wheel <NUM> and then finely ground by the second grinding wheel <NUM>. By the implementation of the present invention, the grinding operation can be carried out separately by choosing different grinding wheels, such as the first grinding wheel <NUM> and the second grinding wheel <NUM>, so as to avoid the inconvenience of changing grinding wheels.

According to the aforementioned explanation of the relationship between the components and the connection, the three-dimensional state of the first embodiment of the ultrasonic conduction grinding module provided by the invention after assembly is shown in <FIG> and <FIG>, and after the connecting holes <NUM> of the adapter ring <NUM> of the ultrasonic conduction grinding module penetrate through the connecting piece, the connecting holes <NUM> are locked on the spindle, the tool holder or the flange, so that the ultrasonic conduction grinding module can synchronously rotate along with the spindle, the tool holder or the flange.

Please refer to <FIG> and <FIG>, when the ultrasonic conduction grinding module in operation, one end (positive pole) of the voltage source of the spindle or the tool holder is connected to at least one first conductive sheet <NUM>; and the other end (negative pole) of the voltage source is connected to at least one piece of the second conductive sheet <NUM>. When a positive voltage is applied to the surface of the piezoelectric plate <NUM>, the electric dipole moment will be elongated due to the action of the electric field, so that the piezoelectric plate <NUM> will be elongated along the direction of the electric field in order to resist the change (as shown by the arrow A in <FIG>). Therefore, when a regular frequency and positive voltage are applied, the piezoelectric plate <NUM> is stretched and recovered to produce axial high-frequency vibration B (shown in the axial plural arcs in <FIG>). When the axial high-frequency vibration B is transmitted to the conical body <NUM> on the steering member <NUM> and the conical groove <NUM> on the amplitude rod <NUM> in a complementary form, that is, the formation of radial high-frequency vibration C (shown in <FIG> and <FIG> in the radial plural arcs), so that the workpiece chippings produced in the grinding process can be dropped under the action of the radial high-frequency vibration C.

As shown in <FIG> and <FIG>, the three-dimensional exploded view and the assembled cross-sectional view of the second embodiment of the ultrasonic conduction grinding module not part of the claimed invention, are respectively displayed, and compared with the first embodiment, the second embodiment use the same reference numerals (symbols) to indicate the same components, since the second embodiment shares many common components with the first embodiment, only the differences between the two will be described in detail.

In this embodiment not part of the claimed invention, the amplitude rod <NUM> is also a T-shaped body with one side, e.g., the inner side, radially protruding from the adapter ring <NUM>, and the adapter ring <NUM> is axially provided with a plurality of connecting holes <NUM>, the other side of the amplitude rod <NUM>, e.g., the outer side, axially extends to the shaft rod <NUM> with at least one grinding wheel <NUM>. A conical groove <NUM> is axially formed on the outer side of the shaft rod <NUM>, and a rod groove <NUM> communicated with the conical groove <NUM> is formed on the other side, that is, the inner side.

In addition, the relay rod <NUM> is sleeved in the rod groove <NUM>, and the relay rod <NUM> is axially provided with a through hole <NUM> through which the coupling member <NUM> passes. The relay rod <NUM> is made of metal, such as copper or copper alloy, and one side of the relay rod <NUM>, such as the inner side, is adjacent to one of the second conductive sheets <NUM> to form an electrical connection.

The steering member <NUM> is provided with a conical body <NUM> which is arranged in the conical groove <NUM> in a sleeving mode and is complementary to the conical groove <NUM> in a taper mode, and the conical body <NUM> is adjacent to the relay rod <NUM> and axially provided with a screw hole <NUM> for locking the coupling member <NUM>.

According to the aforementioned explanation of the relationship between the components and the connection, the second embodiment not part of the claimed invention, of the ultrasonic conduction grinding module provided by the invention is shown in <FIG>, and after the connecting holes <NUM> of the connecting ring <NUM> of the ultrasonic conduction grinding module penetrate through the connecting piece, the connecting holes <NUM> are locked on the spindle, tool holder or flange, so that the ultrasonic conduction grinding module can synchronously rotate along with the spindle, tool holder or flange.

Referring again to <FIG>, while the ultrasonic conductive grinding module in operation, one end (positive electrode) of a voltage source of a spindle or tool holder is connected to at least one first conductive sheet <NUM>; and the other end (negative electrode) of the voltage source is connected to at least one second conductive sheet <NUM>. When the negative voltage is applied to the surface of the piezoelectric plate <NUM>, the electric dipole moment will be squeezed due to the electric field, so that the piezoelectric plate <NUM> will be squeezed in the direction of the electric field to resist the change. Therefore, when a regular frequency and negative voltage are applied, the piezoelectric plate <NUM> is squeezed and recovered to produce axial high-frequency vibration B (shown in the axial plural arcs in <FIG>). When the axial high-frequency vibration B is transmitted to the conical body <NUM> on the steering member <NUM> and the conical groove <NUM> on the amplitude rod <NUM> in a complementary shape, it forms the radial high-frequency vibration C (shown in the radial plural arcs in <FIG>), so that the workpiece chippings produced in the grinding process can fall off under the action of the radial high-frequency vibration C.

Therefore, the effect of the invention is that the radial high-frequency vibration formed by transmitting of the axial high-frequency vibration to the conical body on the steering member and the conical groove on the amplitude rod in a complementary shape, enables the workpiece chippings produced during the grinding process to fall off under the action of the radial high-frequency vibration, and at the same time achieves the advantages of improving the grinding efficiency and reducing the wear of the grinding sheet. Furthermore, the ultrasonic conductive grinding module can be locked to the spindle or tool holder, so that the ultrasonic conductive grinding module can rotate synchronously with the spindle or tool holder. In particular, the amplitude rod of the ultrasonic conduction grinding module can be connected to at least one grinding wheel, such as the first grinding wheel and the second grinding wheel to carry out grinding work separately, so as to avoid the inconvenience of replacing grinding wheels, which is an unprecedented design of its kind.

Claim 1:
An ultrasonic conduction grinding module, comprising:
a vibration source (<NUM>), including a plurality of piezoelectric plates (<NUM>), and a conductive sheet group (<NUM>) with at least one first conductive sheet (<NUM>) and at least one second conductive sheet (<NUM>), the conductive sheet group (<NUM>) being configured to form a parallel connection state of the piezoelectric plates (<NUM>), and the rear of one of the plurality of piezoelectric plates (<NUM>) being adjacent to an elastic body (<NUM>), and a coupling member (<NUM>) passing through the elastic body (<NUM>) and the piezoelectric plates (<NUM>);
a steering member (<NUM>), through which the coupling member (<NUM>) passes, and outer side of which is provided with a conical body (<NUM>); and
an amplitude rod (<NUM>), the inner side of the amplitude rod (<NUM>) is radially provided with an adapter ring (<NUM>), the outer side of the amplitude rod (<NUM>) extends axially to receive a shaft rod (<NUM>) of at least one grinding wheel (<NUM>), and the inner side of the shaft rod (<NUM>) is axially provided with a conical groove (<NUM>) with a taper complementary to the conical body (<NUM>); and the shaft rod (<NUM>) is further axially provided with a locking hole (<NUM>) communicated with the conical groove (<NUM>) and is locked by the coupling member (<NUM>);
upon application of a regular frequency and a positive voltage, the piezoelectric plate (<NUM>) is alternately elongated and restored and generates axial high-frequency vibrations (B), the axial high-frequency vibrations (B) are transmitted to the conical body (<NUM>) on the steering member (<NUM>) in a complementary state, also transmitted to the conical groove (<NUM>) on the amplitude rod (<NUM>), so as to form a radial high-frequency vibration (C).