Grinding device

Abstract

The utility model relates to the technical field of shaft workpiece machining, in particular to a grinding device which is used for grinding a circular knife mold and comprises a mounting support, a center mechanism and a rotating mechanism, and the mounting support comprises a stand column and a base; the center mechanism comprises a linear driving piece, an upper center and a lower center; the linear driving piece is installed on the stand column. The linear driving part drives the upper tip to move up and down; the lower tip is arranged on the base, and the lower tip and the upper tip are coaxially arranged; the rotating mechanism comprises a rotating driving piece, a rotating disc and a rotating assembly. The rotary driving piece is connected with the turntable and drives the turntable to rotate; the lower tip penetrates through the central through hole of the turntable; the rotating assembly comprises a connecting piece and a poke rod; the connecting piece comprises a connecting part and an abutting part; the connecting part is fixedly connected with the circular knife mold; the poke rod is eccentrically arranged on the rotary disc so as to drive the poke rod, the abutting part and the circular knife mold to rotate through rotation of the rotary disc. By means of the arrangement, the grinding quality of the center hole of the shaft workpiece can be improved.

Description

Technical Field

[0001] This application relates to the field of shaft workpiece processing technology, and in particular to a grinding device. Background Technology

[0002] In the process of machining with a circular die, in order to ensure the machining reference of the circular die, the center hole of the circular die needs to be ground and repaired.

[0003] In related technologies, the center hole of a circular cutter mold is ground using a grinding device. The specific grinding process is as follows: the circular cutter mold is installed between the upper and lower centers of the grinding device. The upper center applies pressure to the top of the circular cutter mold and remains stationary. The center hole at the bottom of the circular cutter mold is ground by rotating the lower center. After the center hole at one end is ground, it is rotated 180° to grind the center hole at the other end. It can be seen that the above-mentioned grinding device can only grind one end of the circular cutter mold at a time, which is inefficient. In addition, it is necessary to rotate the circular cutter mold 180° and clamp the shaft workpiece a second time, which is prone to errors, resulting in poor concentricity of the center holes at both ends of the circular cutter mold, thus resulting in poor grinding quality. Utility Model Content

[0004] In view of this, this application provides a grinding apparatus that can improve the grinding quality of the center hole of shaft-type workpieces.

[0005] This application provides a grinding device for grinding a circular knife mold. The grinding device includes a mounting bracket, a center mechanism, and a rotating mechanism. The mounting bracket includes a column and a base. The center mechanism includes a linear drive component, an upper center, and a lower center. The linear drive component includes a fixed part and a linear driving part. The fixed part is disposed on the column, and the linear driving part is mounted on the fixed part. The linear driving part is connected to the upper center to drive the upper center to move up and down. The lower center is disposed on the base, and the lower center and the upper center are coaxially arranged. The rotating mechanism includes a rotating drive component, a turntable, and a rotating assembly. The rotating drive component is connected to the turntable to drive the turntable to rotate. The turntable has a central through hole, and the lower center passes through the central through hole. The rotating assembly includes a connector and a lever. The connector includes a connecting part and an abutting part that are connected to each other. The connecting part is used to fix the circular knife mold. The lever is eccentrically disposed on the turntable so that the rotation of the turntable drives the lever to abut the abutting part, and drives the circular knife mold to rotate relative to the upper and lower centers.

[0006] In the above embodiments, the linear drive unit drives the upper center to move up and down, making the distance between the upper and lower centers adjustable to accommodate circular dies of different lengths, thus improving the versatility of the grinding device. The coaxial arrangement of the lower and upper centers improves the problem of poor concentricity between the grinding holes on the upper and lower surfaces of the circular dies, thereby improving the grinding quality of the circular dies. Furthermore, since the upper and lower centers abut against the upper and lower ends of the circular dies respectively, and the rotation of the turntable drives the actuating rod to abut against the abutting part, causing the circular dies to rotate relative to the upper and lower centers, the upper and lower centers can grind the circular dies simultaneously through the rotation of the circular dies themselves, eliminating the need for secondary clamping of the circular dies and improving grinding efficiency and quality.

[0007] In at least one embodiment, the connecting part is a ring-shaped structure, which is sleeved on the circular cutter mold; the ring-shaped structure is provided with at least one fastening screw, which passes through the connecting part and abuts against the lower end of the circular cutter mold to fix the lower end of the circular cutter mold and the connecting part.

[0008] In the above embodiments, the fastening screws and the ring structure enable a fixed connection between the connector and the circular die. Furthermore, the ring structure can be fitted onto circular dies of different diameters and fixed by the fastening screws, thereby improving the versatility of the connector.

[0009] In at least one embodiment, the mounting bracket further includes a retaining ring; the retaining ring is fixed to the column and is used to fit over the upper end of the circular die.

[0010] In the above embodiments, the retaining ring provides support for the circular die, so that during the installation of the circular die, before the upper center is pressed onto the circular die, the retaining ring supports the circular die to prevent it from tipping over.

[0011] In at least one embodiment, the rotating mechanism further includes a transmission element; the rotating drive element is connected to the turntable via the transmission element.

[0012] In the above embodiments, the installation position of the rotary drive component can be changed by setting the transmission component, making the structural arrangement of the rotary drive component and the top mechanism more reasonable.

[0013] In at least one embodiment, the rotary drive is a drive motor, the transmission component is a transmission gear, the turntable includes a gear section, and the transmission gear meshes with the gear section; the output end of the drive motor is connected to the center of the transmission gear.

[0014] In the above embodiments, the turntable includes a gear section, a transmission gear meshes with the gear section, and a rotary drive component is driven to connect with the transmission gear, such that the distribution direction of the rotary drive component and the lower tip is perpendicular to the distribution direction of the upper tip and the lower tip. This reduces the volume occupied in the height direction of the grinding device, thereby making the structural arrangement of the rotary drive component and the tip mechanism more reasonable.

[0015] In at least one embodiment, the grinding apparatus includes a protective seat that covers the transmission member and has a clearance groove that avoids the turntable.

[0016] In the above embodiments, by setting a protective seat, the safety problem caused by the transmission component coming off can be improved, and by setting an avoidance groove, the structure between the protective seat and the turntable is made compact.

[0017] In at least one embodiment, the mounting bracket further includes a fixing seat, the column is provided with a sliding groove that extends along the length of the column, and the fixing seat is slidably connected to the sliding groove; the linear drive unit is connected to the top center through the fixing seat.

[0018] In the above embodiments, by setting a fixed seat and connecting the fixed seat to the upper center, the cooperation between the fixed seat and the slide groove guides the movement of the upper center, thereby making the movement of the upper center more stable.

[0019] In at least one embodiment, the mounting bracket further includes an oblique reinforcement member; the oblique reinforcement member is connected to the column and the base respectively.

[0020] In the above embodiment, the oblique reinforcement provides oblique support to the column, so that a stable triangular structure is formed between the oblique reinforcement and the column, thereby improving the structural stability between the column and the base.

[0021] In at least one embodiment, the oblique reinforcement includes an oblique column and a crossbeam. The crossbeam is disposed on the base, one end of the crossbeam supports the side of the bottom of the column, and the other end of the crossbeam is connected to one end of the oblique column, the other end of the oblique column supports the side of the upper part of the column.

[0022] In the above embodiment, the column is supported by the inclined column and the crossbeam. The inclined column, the crossbeam and the column form a triangle. The triangle structure is stable, thereby improving the structural stability of the column.

[0023] In at least one embodiment, the oblique reinforcement includes a vertical beam, the two ends of which are connected to a horizontal beam and an oblique column, respectively. The vertical beam is connected to the column and extends along the height direction of the column.

[0024] In the above embodiments, by setting up vertical beams, the connection area between the diagonal reinforcement and the column is increased, which enhances the supporting force of the diagonal reinforcement. The vertical beam, horizontal beam and diagonal column form a triangle. The structure of the triangle is stable, thereby improving the structural stability of the column. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the grinding apparatus of this application.

[0026] Figure 2 This is a schematic diagram of the structure of the grinding apparatus of this application, showing the rotation mechanism and the lower center point working together.

[0027] Figure 3 This is a schematic diagram of the structure of the grinding device of this application, showing the interaction between the transmission component and the turntable.

[0028] Explanation of main component symbols

[0029] 100. Circular die; 101. Lower end; 102. Upper end; 10. Mounting bracket; 11. Column; 110. Slide groove; 12. Base; 13. Snap ring; 14. Fixing seat; 15. Angled reinforcement; 150. Angled column; 151. Horizontal beam; 152. Vertical beam; 20. Center mechanism; 21. Linear drive component; 210. Fixing part; 211. Linear drive component; 22. Upper center; 23. Lower center; 30. Rotating mechanism; 31. Rotating drive component; 32. Turntable; 320. Gear part; 33. Rotating assembly; 330. Connecting part; 3301. Connecting part; 3302. Abutting part; 331. Actuating rod; 34. Transmission component; 40. Protective seat; 400. Clearance groove. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0031] The grinding device in the related technology grinds the center hole of the circular cutter mold by rotating the lower center, while the upper center applies pressure to the top of the circular cutter mold and remains stationary. The center hole at the bottom of the circular cutter mold is ground by rotating the lower center. After the center hole at one end is ground, it is rotated 180° to grind the center hole at the other end. In this way, the grinding device can only grind one end of the circular cutter mold at a time, which results in low grinding efficiency. In addition, the circular cutter mold needs to be rotated 180° and clamped a second time, which is prone to errors. This leads to poor concentricity of the center holes at both ends of the circular cutter mold, resulting in poor grinding quality.

[0032] This application provides a grinding apparatus, including a center mechanism and a rotating mechanism. The center mechanism includes an upper center and a lower center, the upper center being used to abut against the upper end face of a circular cutter mold, and the lower center being used to abut against the lower end face of the circular cutter mold. The rotating mechanism includes a rotating drive component, which is driven to rotate the circular cutter mold around its central axis. By rotating the circular cutter mold itself, the upper and lower centers can simultaneously grind both the upper and lower end faces of the mold, eliminating the need for secondary clamping and improving grinding efficiency and quality.

[0033] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the embodiments and features described below can be combined with each other.

[0034] Please see Figure 1 One embodiment of this application provides a grinding device for grinding a circular knife mold. The grinding device includes a mounting bracket 10, a tip mechanism 20, and a rotating mechanism 30.

[0035] Please see Figure 1 In some embodiments, the mounting bracket 10 includes a column 11 and a base 12; the tip mechanism 20 includes a linear drive 21, an upper tip 22 and a lower tip 23; the linear drive 21 includes a fixing part 210 and a linear drive part 211, the fixing part 210 is disposed on the column 11 and the linear drive part 211 is mounted on the fixing part 210; the linear drive part 211 is connected to the upper tip 22 to drive the upper tip 22 to move up and down; the lower tip 23 and the upper tip 22 are disposed on the base 12 and are coaxially arranged.

[0036] With the above configuration, the linear drive unit 211 drives the upper tip 22 to move up and down, making the distance between the upper tip 22 and the lower tip 23 adjustable. This allows it to adapt to circular cutter molds 100 of different lengths, improving the versatility of the grinding device. The upper tip 22 and the lower tip 23 grind the upper and lower end faces of the circular cutter mold 100, respectively, to form grinding holes on the upper and lower end faces of the circular cutter mold 100. The lower tip 23 and the upper tip 22 are coaxially arranged, which can improve the problem of poor concentricity of the grinding holes on the upper and lower end faces of the circular cutter mold 100, thereby improving the grinding quality of the circular cutter mold 100 by the grinding device.

[0037] Please see Figure 1 and Figure 2In some embodiments, the rotating mechanism 30 includes a rotating drive 31, a turntable 32, and a rotating assembly 33; the rotating drive 31 is connected to the turntable 32 to drive the turntable 32 to rotate; the turntable 32 is provided with a central through hole, and the lower tip 23 passes through the central through hole of the turntable 32; the rotating assembly 33 includes a connector 330 and a lever 331; the connector 330 includes a connecting part 3301 and an abutting part 3302 that are connected to each other; the connecting part 3301 is used to fix the circular knife mold 100; the lever 331 is eccentrically disposed on the turntable 32 so that the rotation of the turntable 32 drives the lever 331 to abut the abutting part 3302, and drives the circular knife mold 100 to rotate relative to the upper tip 22 and the lower tip 23.

[0038] With the above configuration, since the lower tip 23 passes through the central through hole of the turntable 32 and abuts against the lower end face of the circular cutter mold 100, and the actuating rod 331 is eccentrically positioned on the turntable 32, when the circular cutter mold 100 needs to be ground, the rotary drive 31 drives the turntable 32 to rotate in the forward direction. The turntable 32 can then drive the lower tip 23 to rotate around the central axis of the turntable 32, and drive the actuating rod 331 to rotate around the circular cutter mold. Furthermore, by providing a connecting member 330, the connecting portion 33 of the connecting member 330... 01 is fixedly connected to the circular cutter mold 100. The actuating rod 331 rotates around the circular cutter mold until it abuts against the contact part 3302 of the connecting member 330, thereby driving the circular cutter mold 100 to rotate around its axis. After the circular cutter mold is ground to the desired position, the rotary drive 31 stops, or the rotary drive 31 drives the turntable 32 to rotate in the opposite direction until the actuating rod 331 separates from the contact part 3302 of the connecting member 330. In this way, the contact part 3302 loses its driving force, thereby causing the circular cutter mold 100 to stop rotating.

[0039] In the embodiments of this application, the actuating lever 331 and the connecting member 330 are set independently, and the actuating lever 331 can be selectively connected to the connecting member 330. Compared with the scheme of directly connecting the actuating lever 331 and the connecting member 330, it is more convenient to adjust the position of the connecting member 330 in the length direction of the circular die 100. In addition, there is no need to set up a connection structure between the connecting member 330 and the actuating lever 331, which makes the structure of the rotating component 33 simple. When the actuating lever 331 and the connecting member 330 are severely worn, it is also convenient to replace the actuating lever 331 and the connecting member 330.

[0040] In some embodiments, the lower tip 23 is coaxially arranged with the turntable 32, such that the rotation axis of the lower tip 23 coincides with the rotation axis of the turntable 32.

[0041] In some embodiments, the fixing part 210 is a plate-like structure or a rod-like structure.

[0042] In some embodiments, the fixing part 210 includes a first fixing section and a second fixing section, which are connected to each other and arranged vertically to form an L-shaped structure. The first fixing section is fixedly connected to the column 11, and the second fixing section is fixedly connected to the linear drive part 211.

[0043] Please see Figure 1 and Figure 2 In some embodiments, the connecting part 3301 has a circular ring structure, which is sleeved on the circular knife mold 100.

[0044] In some embodiments, the annular structure is provided with at least one fastening screw, which passes through the connecting portion 3301 and abuts against the lower end portion 101 of the circular cutter mold 100 to fix the lower end portion 101 of the circular cutter mold 100 and the connecting portion 3301. This arrangement, through the fastening screw and the annular structure, achieves a fixed connection between the connector 330 and the circular cutter mold 100. Furthermore, the annular structure can be fitted onto circular cutter molds 100 of different diameters and fixed by the fastening screw, thereby improving the versatility of the connector 330.

[0045] Specifically, the inner diameter of the annular structure is larger than the outer diameter of the circular cutter mold 100, and it is inserted into the connecting part 3301 by fastening screws and abuts against the lower end 101 of the circular cutter mold 100 to fix the lower end 101 of the circular cutter mold 100 and the connecting part 3301. In this way, the annular structure can be fitted onto circular cutter molds 100 of different diameters and fixed by fastening screws, thereby improving the versatility of the connecting part 330.

[0046] In some embodiments, a plurality of fastening screws are provided, which are spaced apart circumferentially along the annular structure. All the fastening screws pass through the annular structure and abut against the circular die 100. By providing a plurality of fastening screws, the multiple fastening screws form a fixing surface or fixing line, thereby improving the stability of the connection between the connector 330 and the circular die 100.

[0047] In some embodiments, the abutment portion 3302 is a rod-shaped structure that abuts against the actuating rod 331.

[0048] Please see Figure 1In some embodiments, the mounting bracket 10 further includes a retaining ring 13; the retaining ring 13 is fixed to the column 11 and is used to fit onto the upper end 102 of the circular cutter mold 100. By providing the retaining ring 13, the circular cutter mold 100 passes through the retaining ring 13 and rotates relative to the retaining ring 13. The retaining ring 13 provides support for the circular cutter mold 100 so that during the installation of the circular cutter mold 100, before the upper tip 22 is pressed onto the circular cutter mold 100, the retaining ring 13 supports the circular cutter mold 100 so that the circular cutter mold 100 does not tip over.

[0049] Please see Figure 1 and Figure 3 In some embodiments, the rotating mechanism 30 further includes a transmission member 34; the rotating drive member 31 is connected to the turntable 32 via the transmission member 34. By setting the transmission member 34, the installation position of the rotating drive member 31 can be changed, making the structural arrangement of the rotating drive member 31 and the top mechanism 20 more reasonable.

[0050] Please see Figure 1 and Figure 3 In some embodiments, the rotary drive 31 is a drive motor, the transmission component 34 is a transmission gear, and the turntable 32 includes a gear section 320, with the transmission gear meshing with the gear section 320; the output end of the drive motor is connected to the center of the transmission gear. In the above configuration, the turntable 32 includes a gear section 320, with the transmission gear meshing with the gear section 320, and the rotary drive 31 is driven by the transmission gear, such that the distribution direction of the rotary drive 31 and the lower tip 23 is perpendicular to the distribution direction of the upper tip 22 and the lower tip 23. This reduces the volume occupied in the height direction of the grinding device, thereby making the structural arrangement of the rotary drive 31 and the tip mechanism 20 more reasonable.

[0051] Please see Figure 1 and Figure 2 In some embodiments, the grinding apparatus includes a protective seat 40 that covers the transmission member 34. The protective seat 40 has a clearance groove 400 that avoids the turntable 32. The protective seat 40 improves the safety of the transmission member 34 from disengaging, and the clearance groove 400 makes the structure between the protective seat 40 and the turntable 32 more compact.

[0052] Please see Figure 1In some embodiments, the mounting bracket 10 further includes a fixed base 14, and the column 11 is provided with a sliding groove 110 extending along the length of the column 11. The fixed base 14 is slidably connected to the sliding groove 110. The linear drive unit 211 is connected to the upper tip 22 through the fixed base 14. With this configuration, by setting the fixed base 14 and connecting it to the upper tip 22, the engagement between the fixed base 14 and the sliding groove 110 guides the movement of the upper tip 22, thereby making the movement of the upper tip 22 more stable.

[0053] In some embodiments, after the linear drive 21 drives the fixed base 14 to move to a preset position where the upper tip 22 abuts against the upper end face of the circular die 100, the linear drive 21 stops moving so that the fixed base 14 is fixed in the preset position.

[0054] In some embodiments, after the linear drive 21 drives the fixed base 14 to move to a preset position where the upper tip 22 abuts against the upper end face of the circular die 100, the linear drive 21 stops moving and a first fastener is set. The first fastener passes through the fixed base 14 and the column 11 and is threadedly connected to the fixed base 14 and the column 11 to fix the fixed base 14 in the preset position.

[0055] In some embodiments, the grinding device includes a second fastener, a retaining ring 13 slidably connected to a groove 110, and when the retaining ring 13 moves to the connection position where the retaining ring 13 is sleeved on the upper end 102 of the circular knife mold 100, the second fastener passes through the retaining ring 13 and the column 11 and is threadedly connected to the retaining ring 13 and the column 11 to fix the retaining ring 13 in the connection position.

[0056] Please see Figure 1 and Figure 3 In some embodiments, the mounting bracket 10 further includes an oblique reinforcement 15; the oblique reinforcement 15 is connected to the column 11 and the base 12 respectively. In this configuration, the oblique reinforcement 15 provides oblique support to the column 11, so that the oblique reinforcement 15 and the column 11 form a triangle. The structure of the triangle is stable, thereby improving the structural stability between the column 11 and the base 12.

[0057] In some embodiments, the diagonal reinforcement 15 includes an inclined column 150 and a crossbeam 151. The crossbeam 151 is disposed on the base 12, with one end of the crossbeam 151 abutting against the side of the bottom of the column 11, and the other end of the crossbeam 151 connected to one end of the inclined column 150. The other end of the inclined column 150 abuts against the side of the upper part of the column 11. This arrangement allows the inclined column 150 and the crossbeam 151 to jointly support the column 11, forming a triangle with the column 150, crossbeam 151, and column 11. The triangular structure is stable, thereby improving the structural stability of the column 11.

[0058] Please see Figure 1 and Figure 3 In some embodiments, the diagonal reinforcement 15 further includes a vertical beam 152, which is connected to the diagonal column 150 and the horizontal beam 151 respectively. The vertical beam 152 is also connected to the column 11 and extends along the height direction of the column 11. By providing the vertical beam 152, the connection area between the diagonal reinforcement 15 and the column 11 is increased, thereby enhancing the supporting force of the diagonal reinforcement 15. The vertical beam 152, the horizontal beam 151, and the diagonal column 150 form a triangle. The triangular structure is stable, thereby improving the structural stability of the column.

[0059] In some embodiments, the linear drive unit 211 is a linear cylinder. A linear cylinder can perform linear push-pull actions and has advantages such as fast response, high speed, high precision, and good stability.

[0060] Furthermore, those skilled in the art can make various other corresponding changes and modifications based on the technical concept of this application, and all such changes and modifications should fall within the protection scope of the claims of this application.

Claims

1. A grinding device for grinding circular knife molds, characterized in that, The grinding apparatus includes: Mounting bracket, including uprights and base; The center mechanism includes a linear drive component, an upper center, and a lower center; the linear drive component includes a fixing part and a linear drive part; the fixing part is disposed on the column, and the linear drive part is mounted on the fixing part; the linear drive part is connected to the upper center to drive the upper center to move up and down; the lower center is disposed on the base, and the lower center and the upper center are coaxially arranged. A rotating mechanism includes a rotating drive, a turntable, and a rotating assembly. The rotating drive is connected to the turntable to drive it to rotate. The turntable has a central through hole, and the lower center point passes through the central through hole. The rotating assembly includes a connector and a lever. The connector includes a connecting part and an abutting part that are connected to each other. The connecting part is used to fix the circular die to the turntable. The lever is eccentrically disposed on the turntable so that the rotation of the turntable drives the lever to abut against the abutting part, and drives the circular die to rotate relative to the upper and lower centers.

2. The grinding apparatus as described in claim 1, characterized in that, The connecting part has a circular ring structure, and the circular ring structure is sleeved on the circular knife mold; The annular structure is provided with at least one fastening screw, which passes through the connecting part and abuts against the lower end of the circular die to fix the lower end of the circular die and the connecting part.

3. The grinding apparatus as described in claim 1, characterized in that, The mounting bracket also includes a retaining ring; the retaining ring is fixed to the column and is used to be sleeved on the upper end of the circular die.

4. The grinding apparatus as described in claim 1, characterized in that, The rotating mechanism also includes a transmission component; the rotating drive component is connected to the turntable via the transmission component.

5. The grinding apparatus as described in claim 4, characterized in that, The rotary drive component is a drive motor, the transmission component is a transmission gear, the turntable includes a gear section, and the transmission gear meshes with the gear section; the output end of the drive motor is connected to the center of the transmission gear.

6. The grinding apparatus as described in claim 4, characterized in that, The grinding device includes a protective seat that covers the transmission component and has a clearance groove that avoids the turntable.

7. The grinding apparatus as described in claim 1, characterized in that, The mounting bracket also includes a fixed base, the column is provided with a sliding groove that extends along the length of the column, and the fixed base is slidably connected to the sliding groove; the linear drive unit is connected to the upper center point through the fixed base.

8. The grinding apparatus as described in claim 1, characterized in that, The mounting bracket also includes an oblique reinforcing member; the oblique reinforcing member is connected to the column and the base respectively.

9. The grinding apparatus as described in claim 8, characterized in that, The inclined reinforcement includes an inclined column and a crossbeam. The crossbeam is mounted on the base. One end of the crossbeam supports the side of the bottom of the column, and the other end of the crossbeam is connected to one end of the inclined column. The other end of the inclined column supports the side of the upper part of the column.

10. The grinding apparatus as described in claim 9, characterized in that, The oblique reinforcement includes a vertical beam, the two ends of which are connected to the horizontal beam and the oblique column, respectively. The vertical beam is connected to the column and extends along the height direction of the column.

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