Ultrasonic wave main shaft grinding machining equipment

Abstract

The invention relates to an ultrasonic wave main shaft grinding machining device which mainly comprises a grinding wheel shaft rod, a piezoelectric set, a wheel disc set, a grinding wheel piece, a locking piece, an ultrasonic wave electric lead and a driving assembly. A first wheel disc and a second wheel disc in the wheel disc set are connected and then arranged on the connecting rod in a penetrating mode, an inclined face is defined by a butt joint shaft on the first wheel disc, and a conical face defined by the inner side wall face of a butt joint part on the second wheel disc and the inclined face are in angle complementation. The ultrasonic wave conductor wire is connected with the ultrasonic wave generator and transmits ultrasonic waves to the piezoelectric set to generate high-frequency vibration, radial high-frequency vibration sufficient to cover the friction surface range is formed through angle complementation of the inclined face and the conical face, and meanwhile the driving assembly is matched to be connected with the butt joint rod and generate rotating power to the grinding wheel spindle rod.

Description

Technical Field

[0001] The present invention relates to a grinding processing device, in particular to an ultrasonic spindle grinding processing device. Background Art

[0002] The processing action of a grinding machine is grinding, which uses a grinding tool to grind off the excess of the workpiece to obtain the desired shape, size and machined surface. The sharpening of cutting tools and the precise manufacturing of mechanical parts all rely on grinding, which is also a part of precision machining. During the grinding process, the grinding wheel used for grinding and the workpiece are prone to debris accumulation, which in turn affects the machining effect. To remove the accumulated debris, the existing practice is to use water or cutting fluid to flush and remove it. However, water or cutting fluid washing methods can only remove debris with weak adhesion, but cannot remove small debris with strong adhesion. Over time, the cutting force of the grinding wheel will become dull, affecting the structure of the grinding wheel. In particular, it will cause rapid wear of the grinding wheel during grinding, and even reduce the grinding effect of the workpiece, resulting in poor grinding efficiency.

[0003] The detailed features and advantages of the present invention are described in detail in the following embodiments. The content is sufficient to enable anyone skilled in the relevant art to understand the technical content of the present invention and implement it accordingly. Moreover, based on the content disclosed in this specification, the scope of the patent application and the drawings, anyone skilled in the relevant art can easily understand the relevant purposes and advantages of the present invention. Summary of the Invention

[0004] The main purpose of the present invention is that the grinding processing equipment of the present invention is mainly combined with an external machine (processing machine) to transmit the ultrasonic waves generated by the ultrasonic generator to the piezoelectric group through the ultrasonic conductive wire to generate high-frequency vibration, and form radial high-frequency vibration through the complementary angles of the inclined surface and the conical surface. The radial high-frequency vibration is sufficient to cover the friction surface range of the grinding wheel. At the same time, the driving component is used to drive the grinding wheel to rotate at high speed, thereby not only improving the grinding efficiency of the grinding object, but also preventing the debris generated after grinding from remaining on the grinding wheel and the workpiece. When the grinding wheel rotates at high speed and generates radial high-frequency vibration on the grinding wheel surface, the structural damage caused by the residual debris can be greatly reduced, thereby extending the service life of the grinding wheel. The high-frequency vibration transmission can also cause structural damage to the surface of the workpiece, increase processing efficiency, prevent debris from sticking, and increase processing accuracy.

[0005] To achieve the above-mentioned purpose, the present invention is an ultrasonic spindle grinding processing equipment, which includes: a driving component, which is used to generate a rotating power; a grinding component, which includes: a grinding wheel shaft, which includes a shaft ring, a connecting rod extending from one side of the shaft ring and a docking rod extending from the other side of the shaft ring, wherein the docking rod is connected to the driving component and drives the grinding wheel shaft by the rotating power; a piezoelectric group, which is composed of a plurality of piezoelectric sheets connected in parallel and is passed through the connecting rod; a wheel group, which includes a first wheel plate for the connecting rod to pass through and abut against the piezoelectric group, and a second wheel plate connected to the first wheel plate, wherein a side of the first wheel plate extends A docking shaft having an outer surface forming an inclined surface, the second wheel disc defining a docking portion for matching the docking shaft, wherein the inner side wall of the docking portion defines a tapered surface having an angle complementary to the inclined surface; a grinding wheel member defining an installation space for installing the second wheel disc; a locking member locked to the connecting rod passing through the wheel disc assembly and abutting against the second wheel disc; and an ultrasonic conductive wire connected to an ultrasonic generator for generating an ultrasonic wave and transmitting it to the piezoelectric group to generate high-frequency vibration, the axial high-frequency vibration being formed through the complementary angles of the inclined surface and the tapered surface to form a radial high-frequency vibration sufficient to cover the range of the friction surface.

[0006] According to one embodiment of the present invention, the driving assembly includes: a rotating shaft, a relay connecting rod, a bearing rotating body, a starting motor, a shell and a bearing seat, wherein the shell defines a accommodating space for accommodating the rotating shaft, the relay connecting rod, the bearing rotating body, the starting motor and the bearing seat, wherein the two ends of the rotating shaft are respectively connected to the relay connecting rod and the bearing seat, the relay connecting rod is connected to the docking rod, the rotating shaft is adjacent to the bearing seat and is connected and driven by the starting motor, and the bearing rotating body covers the rotating shaft and is adjacent to the relay connecting rod, and the outer side is fixed to the inner side of the shell, the rotating shaft is driven to rotate by the starting motor, and the grinding wheel shaft, the wheel assembly and the grinding wheel component are linked through the relay connecting rod.

[0007] According to one embodiment of the present invention, a plurality of radial locking holes for locking an external tool are formed on the outer side of the collar.

[0008] According to one embodiment of the present invention, the first wheel includes: a contact plate with a through hole and abutting against the piezoelectric group, one side of the contact plate is located around the through hole and extends around the docking shaft with the inclined surface, and the docking shaft is hollow and thin-walled, and the through hole is penetrated by the connecting rod.

[0009] According to one embodiment of the present invention, the second wheel disc includes: a positioning disc having a through hole and the docking portion located on one side of the positioning disc, wherein the positioning disc is fixed to the grinding wheel component, and the conical surface defined by the inner wall surface of the docking portion extending to the position of the through hole is complementary to the inclined surface at an angle, and the docking portion is a hollow thin wall.

[0010] According to one embodiment of the present invention, the bearing rotating body includes a fixed part fixed to the inner side of the housing, a rotating part covering the rotation axis, and a plurality of balls arranged between the fixed part and the rotating part.

[0011] According to one embodiment of the present invention, the friction surface defined by the grinding wheel is on the same horizontal plane as the second wheel disc. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic cross-sectional structure diagram of the grinding processing equipment of the present invention.

[0013] Figure 2 It is a schematic cross-sectional structural diagram of the grinding assembly of the present invention.

[0014] Figure 3 Schematic diagram of the cross-sectional structure of the grinding assembly of the present invention.

[0015] Figure 4 It is a schematic diagram of the cross-sectional structure of the drive assembly of the present invention.

[0016] Figure 5 It is a schematic diagram of the use state of the radial high-frequency vibration range of the present invention covering the friction surface range.

[0017] Explanation of symbols

[0018] Drive assembly 1, rotating shaft 10, relay connecting rod 11, bearing rotating body 12, fixing member 120, rotating member 122, ball bearing 124, starting motor 13, housing 14, accommodating space 140, bearing seat 15, grinding assembly 2, grinding wheel shaft 20, collar 200, radial locking hole 2000, connecting rod 202, docking rod 204, piezoelectric group 21, wheel assembly 22, first wheel 220, docking shaft 2200, contact plate 2201, inclined surface 2202, through hole 2203, second wheel 222, docking portion 2220, positioning plate 2221, tapered surface 2222, through hole 2223, grinding wheel component 23, installation space 230, locking member 24, ultrasonic conductive wire 3, ultrasonic generator 4. DETAILED DESCRIPTION

[0019] The following describes the implementation of the present invention through specific embodiments. People skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0020] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in this specification for the understanding and reading of those familiar with this technology. They are not used to limit the conditions for the implementation of the present invention and therefore have no substantial technical significance. Any structural modifications, changes in proportional relationships, or adjustments in size should still fall within the scope of the technical contents disclosed in this invention without affecting the effects and objectives that can be achieved by the present invention. At the same time, terms such as "one", "two", "on", etc. quoted in this specification are only used to facilitate the clarity of the description and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be considered as the scope of the implementation of the present invention without substantially changing the technical contents.

[0021] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, Figure 1 The present invention provides a cross-sectional structural diagram of the grinding apparatus, a cross-sectional structural diagram of the grinding assembly, an exploded cross-sectional structural diagram of the grinding assembly, and an exploded cross-sectional structural diagram. The present invention provides an ultrasonic spindle grinding apparatus, primarily comprising: a drive assembly 1, a grinding assembly 2, and an ultrasonic conductive wire 3. The drive assembly 1 assembles the grinding assembly 2, and the rotational power generated by the drive assembly 1 is used to drive the grinding assembly 2. The ultrasonic conductive wire 3 connects to an ultrasonic generator 4 to transmit ultrasonic waves.

[0022] The grinding assembly 2 primarily comprises a grinding wheel shaft 20, a piezoelectric assembly 21, a wheel assembly 22, a grinding wheel 23, and a locking element 24. The grinding wheel shaft 20 comprises a collar 200, a connecting rod 202, and a docking rod 204. The connecting rod 202 extends from one side of the collar 200, while the docking rod 204 extends from the other side of the collar 200. The docking rod 204 connects to the drive assembly 1 and drives the grinding wheel shaft 20 through rotational power. The collar 200 has a plurality of radial locking holes 2000 formed on its outer side, each of which can be used to connect external tools. The piezoelectric assembly 21 comprises a plurality of piezoelectric plates connected in parallel and inserted through the connecting rod 202.

[0023] The wheel assembly 22 includes a first wheel 220 and a second wheel 222, wherein the first wheel 220 is for the connecting rod 202 to pass through and abuts against the piezoelectric group 21, and the outer surface of the docking shaft 2200 extending from a side of the first wheel 220 forms an inclined surface 2202, and the docking portion 2220 defined by the second wheel 222 matches the docking shaft 2200, wherein the inner wall surface of the docking portion 2220 has a tapered surface 2222. When the first wheel 220 and the second wheel 222 are connected to each other, the docking shaft 2200 is used to insert into the docking portion 2220. After insertion, since the inclined surface angles of the inclined surface 2202 and the tapered surface 2222 complement each other, they can achieve a fitting state after insertion.

[0024] In the above description, the first wheel 220 includes: a contact plate 2201 and a docking shaft 2200 extending from one side of the contact plate 2201. The contact plate 2201 has a through-hole 2203 for abutting against the piezoelectric group 21. The through-hole 2203 is penetrated by the connecting rod 202. The docking shaft 2200 is located around the through-hole 2203 and extends with an inclined surface 2202, so that the docking shaft 2200 has a hollow, thin-walled structure.

[0025] As previously mentioned, the second wheel 222 includes a positioning plate 2221 and a docking portion 2220 on one side of the positioning plate 2221. The positioning plate 2221 has a through hole 2223. The positioning plate 2221 is fixed to the grinding wheel 23, and the inner wall of the docking portion 2220 extends to the through hole 2223. The tapered surface 2222 defined by the docking portion 2220 forms a complementary angle with the inclined surface 2202, giving the docking portion 2220 a hollow, thin-walled structure. The hollow, thin-walled structure of both the docking shaft 2200 and the docking portion 2220 effectively improves the accuracy of the tilt angle and the efficiency of ultrasonic wave transmission.

[0026] After the first and second discs 220 and 222 are assembled, the grinding wheel 23 is assembled to the second disc 222 using the mounting space 230 . The friction surface of the grinding wheel 23 is aligned with the second disc 222 to achieve better flatness. Finally, the fastener 24 is fastened to the connecting rod 202 extending from the disc assembly 22 and abuts against the second disc 222 . This effectively secures the grinding wheel shaft 20 , the piezoelectric assembly 21 , the disc assembly 22 , and the grinding wheel 23 in place through the fastener 24 and the connecting rod 202 .

[0027] The present invention utilizes the locking member 24 to lock the connecting rod 202 from the outside, which not only makes assembly more convenient, but also allows installation to be completed almost entirely by hand during locking. This is in contrast to the conventional method of locking the connecting rod 202 with an internal screw slot or nut, which requires the use of external tools for effective installation or removal during assembly, which is very inconvenient.

[0028] Finally, the ultrasonic conductive wire 3 is connected to the ultrasonic generator 4. The ultrasonic conductive wire 3 passes through the driving component 1 and the grinding wheel shaft 20 and is connected to the piezoelectric group 21. At this time, the ultrasonic waves generated by the ultrasonic generator 4 can be transmitted to the piezoelectric group 21 through the ultrasonic conductive wire 3.

[0029] The aforementioned drive assembly 1 includes a rotating shaft 10, a relay connecting rod 11, a bearing rotating body 12, a starting motor 13, a housing 14, and a bearing seat 15. The housing 14 defines a housing 140 for accommodating the rotating shaft 10, the relay connecting rod 11, the bearing rotating body 12, the starting motor 13, and the bearing seat 15. During assembly, the rotating shaft 10 is connected to the relay connecting rod 11 and the bearing seat 15 at both ends. The relay connecting rod 11 is connected to the docking rod 204. The rotating shaft 10 is connected and driven by the starting motor 13 near the bearing seat 15. The bearing rotating body 12 surrounds the rotating shaft 10 and is located near the relay connecting rod 11. The outer side of the bearing rotating body 12 is fixed to the inner side of the housing 14. The starting motor 13 drives the rotating shaft 10 to rotate, and through the relay connecting rod 11, it drives the grinding wheel shaft 20, the wheel assembly 22, and the grinding wheel 23.

[0030] The bearing rotating body 12 mentioned above mainly includes: a fixed part 120, a rotating part 122 and a ball 124. The fixed part 120 is used to be fixed on the inner side of the housing 14, and the rotating part 122 is used to cover the rotating shaft 10. A plurality of balls 124 are arranged between the fixed part 120 and the rotating part 122. When the rotating shaft 10 rotates, the rotating part 122 installed on the rotating shaft 10 will rotate corresponding to the fixed part 120 through each ball 124. Since the fixed part 120 is fixed on the inner side of the housing 14, it has a similar use effect to a bearing.

[0031] For reference Figure 5 The figure shows a schematic diagram of the use state of the present invention in which the radial high-frequency vibration range covers the range of the friction surface. When the ultrasonic spindle grinding processing equipment is in operation, according to the structural relationship between the aforementioned drive component 1, grinding component 2 and ultrasonic conductive wire 3, when the ultrasonic generator 4 is started, the ultrasonic wave is transmitted to the piezoelectric group 21 through the ultrasonic conductive wire 3. The piezoelectric group 21 is composed of multiple piezoelectric plates connected in parallel and a positive voltage is applied to the surface. When the electric field acts, the electric dipole moment will be elongated, so that each piezoelectric plate will elongate along the direction of the electric field to resist the change (such as Figure 5 As shown by the mark A), when a regular frequency and positive voltage are applied, each piezoelectric piece will be stretched and restored to produce axial high-frequency vibration (such as Figure 5 At this time, the axial high-frequency vibration will be transmitted to the inclined surface 2202 and the tapered surface 2222. As the angles of the inclined surface 2202 and the tapered surface 2222 are different, radial high-frequency vibrations of different angle ranges will be generated. The radial high-frequency vibration range generated by the angle range of the inclined surface 2202 and the tapered surface 2222 must cover the friction surface range of the grinding wheel 23 (such as Figure 5 Marked as C).

[0032] Also refer to Figure 4, and is combined with the driving component 1 to drive the grinding wheel to rotate at high speed. When the driving component 1 is driven, the rotation axis 10 is driven by the operation of the starting motor 13, and the relay connecting rod 11 connected to one end of the rotation axis 10 and the grinding component 2 connected to the relay connecting rod 11 also rotate synchronously. In order to stabilize the position of the rotation axis 10 installed in the accommodating space 140 to prevent displacement, the bearing rotating body 12 is used to cover the rotation axis 10 and is adjacent to the relay connecting rod 11. The outer side is used to be fixed on the inner side of the housing 14, thereby achieving the effect of fixing the height position of the rotation axis 10.

[0033] This not only improves the grinding efficiency of the object to be ground, but also prevents the debris generated after grinding from remaining on the grinding wheel. When the grinding wheel rotates at high speed, it can greatly reduce the structural damage caused by the debris residue, thereby extending the service life of the grinding wheel.

[0034] The above embodiments are intended only to illustrate the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify the above embodiments without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be as set forth in the claims set forth below.

Claims

1. An ultrasonic spindle grinding equipment, comprising: A driving assembly for generating a rotational power; A grinding assembly comprising: a grinding wheel shaft, comprising a collar, a connecting rod extending from one side of the collar, and a docking rod extending from the other side of the collar, wherein the docking rod is connected to the drive assembly and drives the grinding wheel shaft by the rotational power; a piezoelectric group, which is composed of a plurality of piezoelectric sheets connected in parallel and is disposed through the connecting rod; A wheel assembly, comprising a first wheel through which the connecting rod passes and abuts against the piezoelectric assembly, and a second wheel connected to the first wheel, wherein a side surface of the first wheel extends to form a docking shaft with an outer surface forming an inclined surface, and the second wheel defines a docking portion for mating with the docking shaft, wherein an inner sidewall of the docking portion defines a tapered surface with an angle complementary to the inclined surface; a grinding wheel member defining a mounting space for mounting the second wheel disc; and a locking member, which is locked to the connecting rod extending through the wheel assembly and abuts against the second wheel; An ultrasonic conductive wire is connected to an ultrasonic generator for generating an ultrasonic wave and transmitting it to the piezoelectric group to generate an axial high-frequency vibration. The axial high-frequency vibration is formed into a radial high-frequency vibration sufficient to cover a friction surface range defined by the grinding wheel through the complementary angles of the inclined surface and the conical surface.

2. The ultrasonic spindle grinding processing equipment according to claim 1, wherein the driving assembly comprises: a rotating shaft, a relay connecting rod, a bearing rotating body, a starting motor, a housing and a bearing seat, wherein the housing defines an accommodating space for accommodating the rotating shaft, the relay connecting rod, the bearing rotating body, the starting motor and the bearing seat, wherein the two ends of the rotating shaft are respectively connected to the relay connecting rod and the bearing seat, the relay connecting rod is connected to the docking rod, the rotating shaft is connected and driven by the starting motor near the bearing seat, and the bearing rotating body covers the rotating shaft and is near the relay connecting rod, and the outer side is fixed to the inner side of the housing, and the rotating shaft is driven to rotate by the starting motor, and the grinding wheel shaft, the wheel assembly and the grinding wheel part are linked through the relay connecting rod.

3. The ultrasonic spindle grinding equipment according to claim 1, wherein a plurality of radial locking holes for locking an external tool are formed on the outer side of the collar.

4. The ultrasonic spindle grinding apparatus according to claim 1 , wherein the first wheel comprises: a contact plate having a through-hole and resting against the piezoelectric group; a docking shaft having the inclined surface extending around the through-hole on one side of the contact plate; the docking shaft is hollow and thin-walled; and the through-hole is formed by the connecting rod.

5. The ultrasonic spindle grinding apparatus according to claim 4 , wherein the second wheel disc comprises: a positioning disc having a through hole and the docking portion located on one side of the positioning disc, wherein the positioning disc is fixed to the grinding wheel member, and the tapered surface defined by the inner wall of the docking portion extending to the position of the through hole is complementary to the inclined surface, and the docking portion is a hollow thin wall.

6. The ultrasonic spindle grinding equipment according to claim 2, wherein the bearing rotating body comprises a fixed part fixed to the inner side of the housing, a rotating part covering the rotation axis, and a plurality of balls arranged between the fixed part and the rotating part. 7 . The ultrasonic spindle grinding apparatus according to claim 1 , wherein the friction surface defined by the grinding wheel is on the same horizontal plane as the second wheel disc.

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