Double-end-face accurate grinding device

Abstract

The utility model relates to the technical field of end face polishing, in particular to a double-end-face accurate grinding device which comprises a base, a plurality of hydraulic rods are fixedly arranged at the top of the base, an upper grinding disc is jointly arranged on output shafts of the hydraulic rods, a rotating shaft is rotatably arranged on the base, a lower grinding disc is sleeved on the rotating shaft, and the lower grinding disc is rotatably connected with the rotating shaft. The lower millstone is fixedly connected with the base and located below the upper millstone, a plurality of containing gears are arranged between the upper millstone and the lower millstone, a plurality of containing holes are formed in the containing gears, a connecting assembly is arranged between the containing gears and the rotating shaft, and the connecting assembly is used for enabling the rotating shaft and the containing gears to be in linkage. A supporting assembly is jointly arranged between the containing gear and the base and used for supporting the containing gear. The double-end-face grinding device has the effects that double-end-face grinding can be conveniently conducted on the workpiece at the same time, and the workpiece end face grinding efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of end surface polishing, in particular to a double end surface fine grinding device. Background Art

[0002] Double-sided fine grinding machine is a kind of equipment specially used for double-sided grinding and polishing of workpieces. This equipment grinds both sides of the workpiece between two opposing grinding discs at the same time, which not only makes the end face of the workpiece reach nanometer-level surface roughness and micrometer-level flatness, but also greatly improves the processing efficiency.

[0003] In the related art, a Chinese patent with authorization announcement number CN215092526U provides a bearing workpiece grinding end face grinding machine, which includes a pedestal, a wheel rim is installed on the pedestal, a gear ring is welded on the inner wall of the wheel rim, a driving gear is installed in the wheel rim, the driving gear is driven by a motor, a number of driven gear plates are meshed between the driving gear and the gear ring, a number of placement slots are provided on the driven gear plate, a grinding plate is installed above the driven gear plate, and the grinding plate is driven to move by an electric push cylinder. First, the workpiece is placed in the placement slot, and then the electric push cylinder drives the grinding plate to move downward to fit with the end face of the workpiece, and finally the motor drives the driving gear to rotate, and the driving gear drives the meshing driven gear plate to rotate along the gear ring, so that the driven gear plate drives the end face of the workpiece to fit the grinding plate to rotate, so as to achieve the effect of grinding the end face of the workpiece.

[0004] In the process of implementing the present application, the inventors found that there are at least the following problems in this technology: the grinding disc grinds the workpiece on one side. After grinding the end wall on one side of the workpiece, the staff turns the workpiece over and then grinds the end face on the other side of the workpiece, resulting in low grinding efficiency of the workpiece end face. Utility Model Content

[0005] In order to facilitate the simultaneous double-end surface grinding of a workpiece and improve the workpiece end surface grinding efficiency, the present application provides a double-end surface fine grinding device.

[0006] The double-end surface fine grinding device provided in this application adopts the following technical solution:

[0007] A double-end surface fine grinding device comprises a base, a plurality of hydraulic rods are fixedly arranged on the top of the base, an upper grinding disc is commonly arranged on the output shafts of the hydraulic rods, a rotating shaft is rotatably arranged on the base, a lower grinding disc is sleeved on the rotating shaft, the lower grinding disc is rotatably connected to the rotating shaft, the lower grinding disc is fixedly connected to the base, the lower grinding disc is located below the upper grinding disc, a plurality of placement gears are arranged between the upper grinding disc and the lower grinding disc, a plurality of placement holes are provided on the placement gears, a connecting component is commonly arranged between the placement gears and the rotating shaft, the connecting component is used to link the rotating shaft with the placement gear, a supporting component is commonly arranged between the placement gear and the base, the supporting component is used to support the placement gear.

[0008] By adopting the above technical scheme, when grinding the end faces of both ends of the workpiece, the workpiece is placed in the placement hole, the lower grinding disc contacts the bottom end of the workpiece, and then the hydraulic rod drives the upper grinding disc to descend until the upper grinding disc contacts the top end of the workpiece, and then the rotating shaft rotates to drive the placement gear to rotate through the connecting component, and the rotation of the placement gear drives the workpiece to move between the upper grinding disc and the lower grinding disc, so that the upper grinding disc grinds the top of the workpiece and the lower grinding disc grinds the bottom of the workpiece, thereby achieving the effect of synchronous grinding of the end faces on both sides of the workpiece, thereby improving the end face grinding efficiency of the workpiece.

[0009] Preferably, the connecting assembly includes an internal gear and a group of inner ring plates, the two sides of the internal gear are fixedly connected to the opposite surfaces of the inner ring plates, the inner ring plates and the internal gear are both sleeved on the rotating shaft, the inner ring plates and the internal gear are both fixedly connected to the rotating shaft, the internal gear and the inner ring plates are both coaxially arranged with the rotating shaft, the outer diameter of the inner ring plate is larger than the outer diameter of the internal gear, the opposite surfaces of the inner ring plates are in contact with the outer wall of the placed gear, and the internal gear and the placed gear are meshed with each other.

[0010] By adopting the above technical solution, since the opposite surface of the inner ring plate is in contact with the outer wall of the placed gear, the inner ring plate supports the placed gear, so that the placed gear and the internal gear are meshed with each other and the placed gear is not easy to move in the height direction. When the rotating shaft rotates, the rotating shaft drives the internal gear to rotate, and then the internal gear drives the placed gear to rotate.

[0011] Preferably, the supporting assembly includes an external gear, a group of outer ring plates and a plurality of legs, the two sides of the external gear are fixedly connected to the opposite surfaces of the outer ring plates, the outer ring plates are fixedly connected to the legs, the legs are fixedly connected to the base, the external gear and the outer ring plates are coaxially arranged with the rotating shaft, the inner diameter of the outer ring plate is smaller than the inner diameter of the external gear, the opposite surfaces of the outer ring plates are in contact with the outer wall of the placed gear, and the external gear and the placed gear are meshed with each other.

[0012] By adopting the above technical solution, since the opposite surface of the outer ring plate is in contact with the outer wall of the placed gear, the outer ring plate supports the placed gear, so that the placed gear and the external gear are meshed with each other and the placed gear is not easy to move in the height direction. During the rotation of the placed gear, the placed gear and the external gear interact with each other, thereby causing the placed gear to revolve around the drive shaft.

[0013] Preferably, a feeding box is arranged above the upper grinding disc, the feeding box is fixedly connected to the output shaft of the hydraulic rod, an upper annular cavity is opened in the feeding box, an upper annular opening is opened at the bottom of the feeding box, the upper annular opening is communicated with the upper annular cavity, a plurality of upper guide holes are opened through the upper grinding disc, and the upper annular cavity and the upper guide holes are arranged opposite to each other.

[0014] By adopting the above technical solution, abrasive fluid is stored in the upper annular cavity. When the upper grinding disc contacts the top of the workpiece, the abrasive fluid in the feeding box flows from the upper annular mouth to the upper guide hole, and then the abrasive fluid is distributed on the top of the workpiece through the upper guide hole. When the workpiece and the upper grinding disc move relative to each other, the top of the workpiece is finely ground by the abrasive fluid.

[0015] Preferably, a sealing ring plate is movably arranged in the upper annular cavity, and the sealing ring plate is used to close the upper annular opening. An inner connecting ring and an outer connecting ring are movably arranged in the upper annular opening. The inner connecting ring is in contact with the inner wall of the upper annular opening on one side away from the outer connecting ring, and the outer connecting ring is in contact with the inner wall of the upper annular opening on one side away from the inner connecting ring. The top of the inner connecting ring and the top of the outer connecting ring are both fixedly connected to the sealing ring plate, the bottom of the inner connecting ring and the bottom of the outer connecting ring are both fixedly connected to the upper grinding disc, and a number of connecting holes are provided on the side walls of the inner connecting ring and the side walls of the outer connecting ring.

[0016] By adopting the above technical scheme, when the upper grinding disc is not in contact with the workpiece, the upper grinding disc, the inner connecting ring and the outer connecting ring, under the action of gravity, make the sealing ring plate abut against the inner bottom wall of the upper annular cavity, and then the sealing ring plate closes the upper annular opening. At this time, the abrasive fluid in the upper annular cavity is not easy to be discharged from the upper annular opening. When the upper grinding disc is in contact with the workpiece, the upper grinding disc keeps the inner connecting ring, the outer connecting ring and the sealing ring plate stationary under the support of the workpiece, and the hydraulic rod continues to drive the feeding box to approach the workpiece, so that the sealing ring plate is separated from the inner bottom wall of the upper annular cavity, and the connecting hole enters the upper annular cavity, so that the abrasive fluid in the upper annular cavity enters the upper annular opening through the connecting hole.

[0017] Preferably, an upper through hole is provided through the center of the feeding box, a guide rod is inserted into the upper through hole, the guide rod passes through the upper grinding disc, the guide rod is rotatably connected to the rotating shaft, a pressure ring plate is sleeved on the guide rod, the pressure ring plate is fixedly connected to the feeding box, and a plurality of pressure springs are fixedly arranged between the pressure ring plate and the upper grinding disc.

[0018] By adopting the above technical solution, when the upper grinding disc is not in contact with the workpiece, the pressure spring applies a force to the upper grinding disc away from the feeding box, thereby making the sealing ring plate tightly attached to the bottom wall of the upper annular cavity, reducing leakage of the feeding box.

[0019] Preferably, a lower material box is fixedly arranged at the bottom of the lower grinding disc, the bottom of the lower material box is fixedly connected to the base, a lower through hole is penetrated through the center of the lower material box, the rotating shaft penetrates the lower through hole, a lower annular cavity is opened in the lower material box, a lower annular opening is opened at the top of the lower material box, the lower annular opening is connected with the lower annular cavity, a plurality of lower guide holes are penetrated through the lower grinding disc, and the lower annular cavity and the lower guide holes are arranged relative to each other.

[0020] By adopting the above technical solution, abrasive fluid is stored in the lower annular cavity. When the lower grinding disc and the workpiece move relative to each other, the abrasive fluid in the lower material box flows from the lower annular mouth to the lower guide hole, and then the abrasive fluid is distributed on the bottom end of the workpiece through the lower guide hole. When the workpiece and the lower grinding disc move relative to each other, the bottom end of the workpiece is finely ground by the abrasive fluid.

[0021] Preferably, an extrusion ring plate is movably arranged in the lower annular cavity, a plurality of extrusion rods are fixedly arranged at the bottom of the extrusion ring plate, the bottom ends of the extrusion rods penetrate the bottom of the lower material box, and the side walls of the extrusion rods are slidably connected to the lower annular box.

[0022] By adopting the above technical solution, when the lower grinding disc and the workpiece move relative to each other, the extrusion rod is pushed upward, and the extrusion rod drives the extrusion ring plate to move upward. The extrusion ring plate compresses the internal space of the lower annular cavity, so that the abrasive fluid above the extrusion ring plate overflows from the upper annular opening.

[0023] Preferably, a motor slot is provided on the base, a driving motor is fixedly arranged in the motor slot, a lifting screw is fixedly arranged on the output shaft of the driving motor, the top end of the lifting screw is fixedly connected to the bottom end of the rotating shaft, a lifting ring plate is threadedly connected to the lifting screw, and the top end of the lifting ring plate is fixedly connected to the bottom end of the extrusion rod.

[0024] By adopting the above technical solution, when the upper grinding disc and the lower grinding disc are in contact with the workpiece, the drive motor is started, and the drive motor drives the lifting screw and the rotating shaft to rotate synchronously. The rotation of the rotating shaft causes the workpiece to move between the upper grinding disc and the lower grinding disc. The rotation of the lifting screw drives the lifting ring plate to move upward, and the upward movement of the lifting ring plate pushes the extrusion rod to move upward.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. By setting the base, hydraulic rod, upper grinding disc, rotating shaft, lower grinding disc, placement gear, placement hole, connecting assembly and supporting assembly, the effect of synchronous grinding of the end faces on both sides of the workpiece is achieved, thereby improving the end face grinding efficiency of the workpiece;

[0027] 2. The top of the workpiece can be finely ground by setting the feeding box, the upper through hole, the upper annular cavity, the upper annular opening and the upper guide hole;

[0028] 3. The effect of fine grinding of the bottom end of the workpiece is achieved by arranging a lower material box, a lower through hole, a lower annular cavity, a lower annular opening and a lower guide hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic structural diagram of a double-end surface fine grinding device in an embodiment of the present application.

[0030] Figure 2 It is a cross-sectional view showing the connection relationship between the placement gear and the rotating shaft in the embodiment of the present application.

[0031] Figure 3 It is a schematic diagram showing the positional relationship between the inner ring plate and the outer ring plate in the embodiment of the present application.

[0032] Figure 4 It is a schematic diagram showing the positional relationship between the upper grinding disc and the upper guide hole in the embodiment of the present application.

[0033] Figure 5 It is a cross-sectional view showing the connection relationship between the upper grinding disc and the loading box in the embodiment of the present application.

[0034] Figure 6 It is a cross-sectional view showing the connection relationship between the sealing ring plate and the guide rod in the embodiment of the present application.

[0035] Figure 7 It is a schematic diagram showing the positional relationship between the lower grinding disc and the lower guide hole in the embodiment of the present application.

[0036] Figure 8 It is a cross-sectional view showing the connection relationship between the lower grinding disc and the feed box in the embodiment of the present application.

[0037] Fig. 9 It is a cross-sectional view showing the connection relationship between the extrusion ring plate and the lifting screw in the embodiment of the present application.

[0038] Description of reference numerals: 1, base; 11, hydraulic rod; 12, driving motor; 121, motor slot; 13, rotating shaft; 2, upper grinding disc; 21, upper guide hole; 3, lower grinding disc; 31, lower guide hole; 4, placement gear; 41, placement hole; 42, connecting assembly; 421, inner gear; 422, inner ring plate; 43, supporting assembly; 431, outer gear; 432, outer ring plate; 433, supporting leg; 5. Feeding box; 51. Upper through hole; 52. Upper annular cavity; 53. Upper annular opening; 6. Sealing ring plate; 61. Inner connecting ring; 62. Outer connecting ring; 63. Connecting hole; 7. Guide rod; 71. Pressure ring plate; 72. Pressure spring; 8. Feeding box; 81. Lower through hole; 82. Lower annular cavity; 83. Lower annular opening; 9. Extrusion ring plate; 91. Extrusion rod; 92. Lifting ring plate; 93. Lifting screw. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-9 This application is described in further detail.

[0040] The present application embodiment discloses a double end surface fine grinding device. Figures 1 to 3 , including a base 1, on which a group of hydraulic rods 11 are symmetrically mounted, and an upper grinding disc 2 is commonly mounted on the output shaft of the hydraulic rods 11. A motor slot 121 is provided at the center of the base 1, in which a driving motor 12 is installed, and a rotating shaft 13 is installed on the output shaft of the driving motor 12, the rotating shaft 13 and the hydraulic rods 11 are parallel to each other, and the hydraulic rods 11 are symmetrically distributed on both sides of the rotating shaft 13. A lower grinding disc 3 is sleeved on the rotating shaft 13, the lower grinding disc 3 and the base 1 remain relatively stationary, and the lower grinding disc 3 is located directly below the upper grinding disc 2. A plurality of placement gears 4 are arranged between the upper grinding disc 2 and the lower grinding disc 3, and a plurality of placement holes 41 are penetrated through the placement gears 4. The placement gears 4 are arranged in a circular array along the rotating shaft 13, and a connecting assembly 42 is commonly installed between the placement gears 4 and the rotating shaft 13, and the connecting assembly 42 is used to make the rotating shaft 13 and the placement gear 4 linked. A supporting assembly 43 is commonly installed between the placement gear 4 and the base 1, and the supporting assembly 43 is used to support the placement gear 4. When grinding the end faces of the workpiece, first place the workpiece in the placement hole 41. At this time, the lower grinding disc 3 contacts the bottom of the workpiece, and then the hydraulic rod 11 drives the upper grinding disc 2 to descend until the upper grinding disc 2 contacts the top of the workpiece, and then the hydraulic rod 11 stops. Then the driving motor 12 drives the rotating shaft 13 to rotate, and the rotating shaft 13 drives the placement gear 4 to move through the connecting component 42. The workpiece moves between the upper grinding disc 2 and the lower grinding disc 3, so that the upper grinding disc 2 grinds the top of the workpiece, and the lower grinding disc 3 grinds the bottom of the workpiece. Then, the effect of synchronous grinding of the end faces on both sides of the workpiece is achieved, thereby improving the grinding efficiency of the end faces of the workpiece.

[0041] In order to move the placement gear 4 between the upper grinding disc 2 and the lower grinding disc 3, refer to Figures 1 to 3The connecting assembly 42 includes an inner gear 421 and a group of inner ring plates 422. The two sides of the inner gear 421 are welded to the opposite surfaces of the inner ring plates 422. The inner ring plates 422 and the inner gear 421 are both sleeved on the rotating shaft 13. The inner ring plates 422 and the inner gear 421 are both welded to the outer wall of the rotating shaft 13, and the inner gear 421 and the inner ring plates 422 are both coaxially arranged with the rotating shaft 13. The outer diameter of the inner ring plate 422 is larger than the outer diameter of the inner gear 421. The opposite surface of the inner ring plate 422 is in contact with the outer wall of the placement gear 4, and the inner gear 421 and the placement gear 4 are meshed with each other. The supporting assembly 43 includes an outer gear 431, a group of outer ring plates 432 and a plurality of legs 433. The two sides of the outer gear 431 are welded to the opposite surfaces of the outer ring plates 432. The outer ring plates 432 are welded to the legs 433, and the legs 433 are welded to the base 1. The outer gear 431 and the outer ring plate 432 are both coaxially arranged with the rotating shaft 13. The inner diameter of the outer ring plate 432 is smaller than the inner diameter of the outer gear 431. The opposite surface of the outer ring plate 432 is in contact with the outer wall of the placement gear 4, and the outer gear 431 and the placement gear 4 are meshed with each other. One side of the placement gear 4 is inserted between the inner ring plates 422, and the other side of the placement gear 4 is inserted between the outer ring plates 432, thereby playing a role in supporting the placement gear 4, so that the placement gear 4 is meshed between the inner gear 421 and the outer gear 431. When the rotating shaft 13 rotates, the rotating shaft 13 drives the inner gear 421 to rotate, and then the inner gear 421 drives the placement gear 4 to rotate. During the rotation of the placement gear 4, the placement gear 4 interacts with the outer gear 431, so that the placement gear 4 revolves around the drive shaft, thereby achieving the effect of the placement gear 4 moving between the upper grinding disc 2 and the lower grinding disc 3.

[0042] For fine grinding of the top of the workpiece, refer to Figures 1 to 6 , a feeding box 5 is welded on the output shaft of the hydraulic rod 11, and the feeding box 5 is located above the upper grinding disc 2. An upper through hole 51 is provided through the center of the feeding box 5, and the upper through hole 51 is provided for the rotation shaft 13 to be inserted. An upper annular cavity 52 is provided in the feeding box 5, a feeding pipe is installed on the side wall of the feeding box 5, and an upper annular opening 53 is provided at the bottom of the feeding box 5, and the feeding pipe and the upper annular opening 53 are both connected to the upper annular cavity 52. ​​The upper through hole 51, the upper annular cavity 52 and the upper annular opening 53 are all coaxially arranged with the rotation shaft 13. A plurality of upper guide holes 21 are provided through the upper grinding disc 2, and the upper annular cavity 52 is arranged opposite to the upper guide holes 21. Abrasive fluid is stored in the upper annular cavity 52. ​​When the upper grinding disc 2 contacts the top of the workpiece, the abrasive fluid in the loading box 5 flows from the upper annular opening 53 to the upper guide hole 21, and then the abrasive fluid is distributed on the top of the workpiece through the upper guide hole 21. When the workpiece and the upper grinding disc 2 move relative to each other, the top of the workpiece is finely ground by the abrasive fluid.

[0043] refer to Figures 1 to 6, a sealing ring plate 6 is movably arranged in the upper annular cavity 52, and there is a gap between the side wall of the sealing ring plate 6 and the inner side wall of the upper annular cavity 52, and the sealing ring plate 6 is used to close the upper annular opening 53. An inner connecting ring 61 and an outer connecting ring 62 are movably arranged in the upper annular opening 53, and a plurality of connecting holes 63 are provided on the side wall of the inner connecting ring 61 and the side wall of the outer connecting ring 62. The side of the inner connecting ring 61 away from the outer connecting ring 62 is in contact with the inner wall of the upper annular opening 53, and the side of the outer connecting ring 62 away from the inner connecting ring 61 is in contact with the inner wall of the upper annular opening 53. The top of the inner connecting ring 61 and the top of the outer connecting ring 62 are both welded to the sealing ring plate 6, and the bottom of the inner connecting ring 61 and the bottom of the outer connecting ring 62 are both bolted to the top of the upper grinding disc 2. A guide rod 7 is inserted into the upper through hole 51, and the guide rod 7 passes through the upper grinding disc 2, and the guide rod 7 is rotatably connected to the rotating shaft 13. A pressure ring plate 71 is sleeved on the guide rod 7, and the pressure ring plate 71 is welded to the feeding box 5, and a plurality of pressure springs 72 are welded between the pressure ring plate 71 and the upper grinding disc 2. When the upper grinding disc 2 is not in contact with the workpiece, the pressure spring 72 exerts a force on the upper grinding disc 2 to move away from the feeding box 5, and at the same time, under the action of gravity, the upper grinding disc 2, the inner connecting ring 61 and the outer connecting ring 62 make the sealing ring plate 6 close to the inner bottom wall of the upper annular cavity 52. ​​Then, the sealing ring plate 6 closes the upper annular opening 53, and at this time, the abrasive fluid in the upper annular cavity 52 is not easily discharged from the upper annular opening 53, thereby reducing the leakage of the feeding box 5. When the upper grinding disc 2 contacts the workpiece, the upper grinding disc 2 keeps the inner connecting ring 61, the outer connecting ring 62 and the sealing ring plate 6 still under the support of the workpiece, and the hydraulic rod 11 continues to drive the loading box 5 to approach the workpiece, so that the sealing ring plate 6 is separated from the inner bottom wall of the upper annular cavity 52, and the connecting hole 63 enters the upper annular cavity 52, so that the abrasive fluid in the upper annular cavity 52 enters the upper annular opening 53 through the connecting hole 63.

[0044] For fine grinding of the bottom end of the workpiece, refer to Figures 1 to 9 , a feed box 8 is installed at the bottom of the lower grinding disc 3, and the bottom of the feed box 8 is welded to the base 1. A lower through hole 81 is set through the center of the feed box 8, and the rotating shaft 13 passes through the lower through hole 81. A lower annular cavity 82 is opened in the feed box 8, a feed pipe is installed on the side wall of the feed box 8, and a lower annular opening 83 is opened on the top of the feed box 8, and the feed pipe and the lower annular opening 83 are interconnected with the lower annular cavity 82. The lower through hole 81, the lower annular cavity 82 and the lower annular opening 83 are all coaxially arranged with the rotating shaft 13. A plurality of lower guide holes 31 are set through the lower grinding disc 3, and the lower annular cavity 82 is arranged opposite to the lower guide hole 31. Abrasive fluid is stored in the lower annular cavity 82. When the lower grinding disc 3 and the workpiece move relative to each other, the abrasive fluid in the feed box 8 flows from the lower annular opening 83 to the lower guide hole 31, and then the abrasive fluid is distributed on the bottom end of the workpiece through the lower guide hole 31. When the workpiece and the lower grinding disc 3 move relative to each other, the bottom end of the workpiece is finely ground by the abrasive fluid.

[0045] refer to Figures 1 to 9, an extrusion ring plate 9 is movably arranged in the lower annular cavity 82, and a plurality of extrusion rods 91 are installed at the bottom of the extrusion ring plate 9. The bottom end of the extrusion rod 91 passes through the bottom of the lower material box 8, and the side wall of the extrusion rod 91 is slidably connected with the lower annular box. A lifting screw 93 is welded between the output shaft of the driving motor 12 and the bottom end of the rotating shaft 13, and the lifting screw 93 is threadedly connected with the lifting ring plate 92, and the top of the lifting ring plate 92 is welded with the bottom end of the extrusion rod 91. When both the upper grinding disc 2 and the lower grinding disc 3 are in contact with the workpiece, the driving motor 12 is started, and the driving motor 12 drives the lifting screw 93 and the rotating shaft 13 to rotate synchronously. The rotating shaft 13 rotates to move the workpiece between the upper grinding disc 2 and the lower grinding disc 3, and the lifting screw 93 rotates to drive the lifting ring plate 92 to move upward. The lifting ring plate 92 moves upward to push the extrusion rod 91 to move upward, and the extrusion rod 91 drives the extrusion ring plate 9 to move upward. The extrusion ring plate 9 compresses the internal space of the lower annular cavity 82, so that the abrasive fluid above the extrusion ring plate 9 overflows from the upper annular opening 53.

[0046] The implementation principle of a double-end surface fine grinding device in the embodiment of the present application is as follows: when grinding the end surfaces of the workpiece, first place the workpiece in the placement hole 41, at which time the lower grinding disc 3 contacts the bottom of the workpiece. Then the hydraulic rod 11 drives the upper grinding disc 2 to descend until the upper grinding disc 2 contacts the top of the workpiece, and then the hydraulic rod 11 stops and the drive motor 12 starts. The workpiece is made to rotate and revolve between the upper grinding disc 2 and the lower grinding disc 3, and at the same time, the abrasive fluid flows between the workpiece and the grinding disc, thereby achieving the effect of synchronous grinding of the end surfaces on both sides of the workpiece and improving the grinding efficiency of the end surfaces of the workpiece.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A double-end surface fine grinding device, comprising a base (1), a plurality of hydraulic rods (11) are fixedly arranged on the top of the base (1), and an upper grinding disc (2) is commonly arranged on the output shafts of the hydraulic rods (11), characterized in that: A rotating shaft (13) is rotatably arranged on the base (1), a lower grinding disc (3) is sleeved on the rotating shaft (13), the lower grinding disc (3) is rotatably connected to the rotating shaft (13), the lower grinding disc (3) is fixedly connected to the base (1), the lower grinding disc (3) is located below the upper grinding disc (2), a plurality of placement gears (4) are arranged between the upper grinding disc (2) and the lower grinding disc (3), a plurality of placement holes (41) are provided on the placement gears (4), a connecting component (42) is arranged between the placement gears (4) and the rotating shaft (13), the connecting component (42) is used to make the rotating shaft (13) and the placement gear (4) linked, a supporting component (43) is arranged between the placement gear (4) and the base (1), the supporting component (43) is used to support the placement gear (4).

2. A double-end surface fine grinding device according to claim 1, characterized in that: The connecting assembly (42) comprises an internal gear (421) and a group of inner ring plates (422); both sides of the internal gear (421) are fixedly connected to the opposite surfaces of the inner ring plates (422); the inner ring plates (422) and the internal gear (421) are both sleeved on the rotating shaft (13); the inner ring plates (422) and the internal gear (421) are both fixedly connected to the rotating shaft (13); the internal gear (421) and the inner ring plates (422) are both coaxially arranged with the rotating shaft (13); the outer diameter of the inner ring plate (422) is larger than the outer diameter of the internal gear (421); the opposite surface of the inner ring plate (422) is in contact with the outer wall of the placement gear (4); and the internal gear (421) and the placement gear (4) are meshed with each other.

3. A double end surface fine grinding device according to claim 1, characterized in that: The support assembly (43) comprises an external gear (431), a group of external ring plates (432) and a plurality of legs (433); both sides of the external gear (431) are fixedly connected to the opposite surfaces of the external ring plates (432); the external ring plates (432) are fixedly connected to the legs (433); the legs (433) are fixedly connected to the base (1); the external gear (431) and the external ring plate (432) are coaxially arranged with the rotating shaft (13); the inner diameter of the external ring plate (432) is smaller than the inner diameter of the external gear (431); the opposite surface of the outer ring plate (432) is in contact with the outer wall of the placement gear (4); and the external gear (431) and the placement gear (4) are meshed with each other.

4. A double-end surface fine grinding device according to claim 1, characterized in that: A loading box (5) is arranged above the upper grinding disc (2), the loading box (5) is fixedly connected to the output shaft of the hydraulic rod (11), an upper annular cavity (52) is provided in the loading box (5), an upper annular opening (53) is provided at the bottom of the loading box (5), the upper annular opening (53) and the upper annular cavity (52) are communicated with each other, a plurality of upper guide holes (21) are provided through the upper grinding disc (2), and the upper annular cavity (52) and the upper guide holes (21) are arranged opposite to each other.

5. A double end surface fine grinding device according to claim 4, characterized in that: A sealing ring plate (6) is movably arranged in the upper annular cavity (52), and the sealing ring plate (6) is used to close the upper annular opening (53). An inner connecting ring (61) and an outer connecting ring (62) are movably arranged in the upper annular opening (53). The side of the inner connecting ring (61) away from the outer connecting ring (62) is in contact with the inner wall of the upper annular opening (53), and the side of the outer connecting ring (62) away from the inner connecting ring (61) is in contact with the inner wall of the upper annular opening (53). The top of the inner connecting ring (61) and the top of the outer connecting ring (62) are both fixedly connected to the sealing ring plate (6), and the bottom of the inner connecting ring (61) and the bottom of the outer connecting ring (62) are both fixedly connected to the upper grinding disc (2). The side wall of the inner connecting ring (61) and the side wall of the outer connecting ring (62) are both provided with a plurality of connecting holes (63).

6. A double end surface fine grinding device according to claim 5, characterized in that: An upper through hole (51) is provided through the center of the feeding box (5), a guide rod (7) is inserted into the upper through hole (51), the guide rod (7) passes through the upper grinding disc (2), the guide rod (7) is rotatably connected to the rotating shaft (13), a pressure ring plate (71) is sleeved on the guide rod (7), the pressure ring plate (71) is fixedly connected to the feeding box (5), and a plurality of pressure springs (72) are fixedly provided between the pressure ring plate (71) and the upper grinding disc (2).

7. A double end surface fine grinding device according to claim 1, characterized in that: A material discharge box (8) is fixedly arranged at the bottom of the lower grinding disc (3), the bottom of the material discharge box (8) is fixedly connected to the base (1), a lower through hole (81) is arranged through the center of the material discharge box (8), the rotating shaft (13) passes through the lower through hole (81), a lower annular cavity (82) is provided in the material discharge box (8), a lower annular opening (83) is provided at the top of the material discharge box (8), the lower annular opening (83) and the lower annular cavity (82) are communicated with each other, a plurality of lower guide holes (31) are arranged through the lower grinding disc (3), and the lower annular cavity (82) and the lower guide holes (31) are arranged opposite to each other.

8. A double-end surface fine grinding device according to claim 7, characterized in that: An extrusion ring plate (9) is movably arranged in the lower annular cavity (82), and a plurality of extrusion rods (91) are fixedly arranged at the bottom of the extrusion ring plate (9). The bottom ends of the extrusion rods (91) penetrate the bottom of the lower material box (8), and the side walls of the extrusion rods (91) are slidably connected to the lower annular box.

9. A double end surface fine grinding device according to claim 8, characterized in that: The base (1) is provided with a motor slot (121), a driving motor (12) is fixedly arranged in the motor slot (121), a lifting screw (93) is fixedly arranged on the output shaft of the driving motor (12), the top end of the lifting screw (93) is fixedly connected to the bottom end of the rotating shaft (13), the lifting screw (93) is threadedly connected to a lifting ring plate (92), and the top end of the lifting ring plate (92) is fixedly connected to the bottom end of the extrusion rod (91).

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