A grinding device for screw processing

Abstract

The present invention relates to the technical field of screw processing, and in particular to a grinding device for screw processing, comprising a base, a movable column is slidably mounted on the base, a placement seat is rotatably mounted on the upper end of the movable column, a limiting groove is symmetrically provided on the side of the movable column, a mounting block is symmetrically fixedly installed on the lower surface of the placement seat, two mounting blocks are both installed with L-shaped limiting blocks through spring rods, a rectangular cavity is provided inside the movable column, both of which are connected to the two limiting grooves, a top block is horizontally slidably mounted in the two limiting grooves through a first telescopic spring, and a transmission assembly for driving the two top blocks away from each other is provided in the rectangular cavity. When the placement seat of the present invention rotates, the direction of the screw can be reversed without releasing the clamping of the screw, the operation process is simple, and there is no need to fix the screw multiple times, which saves time and effort, and effectively improves the processing efficiency of the screw.

Description

Technical Field

[0001] The invention relates to the technical field of screw processing, and in particular to a grinding device for screw processing. Background Art

[0002] The ball screw is the most commonly used transmission element in tool machinery and precision machinery. Its main function is to convert rotational motion into linear motion, or to convert torque into axial repetitive force. It also has the characteristics of high precision, reversibility and high efficiency. During the production of the ball screw, there are often many burrs on both ends when the ball screw is formed, which makes the ball screw unable to be further processed or used. Therefore, during the processing of the ball screw, the ball screw needs to be reasonably polished at both ends.

[0003] When grinding the lead screw, the existing grinding device needs to fix the lead screw on the grinding device, and then grind one end of the lead screw through the grinding mechanism on the grinding device. However, during the processing, it is often necessary to grind both ends of the lead screw. At this time, the lead screw needs to be removed from the grinding device, the direction of the lead screw needs to be turned, and then it needs to be fixed. The operation process is very cumbersome and the lead screw needs to be fixed multiple times, which is time-consuming and labor-intensive, and greatly reduces the efficiency of the lead screw processing. Summary of the invention

[0004] The purpose of the present invention is to solve the following shortcomings in the prior art: during the processing, it is often necessary to grind both ends of the screw. At this time, the screw needs to be removed from the grinding device, the direction of the screw needs to be turned, and then it needs to be fixed. The operation process is very cumbersome and the screw needs to be fixed many times, which is time-consuming and labor-intensive, and greatly reduces the efficiency of the screw processing. A grinding device for screw processing is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A grinding device for screw processing, comprising a base, a grinding assembly fixedly mounted on the base, a moving column horizontally slidably mounted on the base via a sliding assembly, a placing seat rotatably mounted on the upper end of the moving column, and a clamping assembly for clamping the screw being provided on the placing seat;

[0007] The movable column has symmetrically arranged limiting grooves on its side surface, and the lower surface of the placement seat has symmetrically fixed mounting blocks, the movable column is located between the two mounting blocks, and the two mounting blocks are both mounted with L-shaped limiting blocks through spring rods, and one end of the two limiting blocks is respectively inserted into the two limiting grooves;

[0008] A rectangular cavity connected to the two limit grooves is provided inside the movable column, and the cross-sectional width of the rectangular cavity is smaller than the cross-sectional width of the limit grooves. A top block is horizontally slidably installed in the two limit grooves through a first telescopic spring, and the two top blocks are respectively in contact with one end of the two limit blocks. A transmission component for driving the two top blocks to move away from each other is provided in the rectangular cavity.

[0009] As a preferred solution, a moving hole connected to the rectangular cavity is formed at the lower end of the moving column, and the transmission assembly includes a moving rod vertically slidably installed in the moving hole, two support rods rotatably installed on the moving rod, a second telescopic spring fixedly installed at one end of the moving rod, and a moving component for driving the moving rod to move vertically upward, the upper end of the moving rod extends into the rectangular cavity, and the lower end extends to the bottom of the moving column, the ends of the two support rods away from the moving rod respectively extend into the two limit grooves, and are respectively rotatably connected to the two top blocks, and the end of the second telescopic spring away from the moving rod is fixedly connected to the inner wall of the rectangular cavity.

[0010] As a preferred solution, the moving component includes a trapezoidal block fixedly mounted on the base, the inclined surface of the trapezoidal block faces the moving rod, and the trapezoidal block is located on the moving path of the moving rod.

[0011] As a preferred solution, the grinding assembly includes a support block fixedly mounted on the base, a rotating shaft rotatably mounted on the support block, a grinding disc fixedly mounted at one end of the rotating shaft, and a driving motor fixedly mounted on the support block, and the output shaft of the driving motor is fixedly connected to the rotating shaft.

[0012] As a preferred solution, the sliding assembly includes two first threaded rods horizontally and symmetrically rotatably installed on the base, two moving blocks respectively threadedly sleeved on the two first threaded rods, and a driving component for simultaneously driving the two first threaded rods to rotate, and the two moving blocks are fixedly connected to the moving column.

[0013] As a preferred solution, the driving component includes a rotating shaft rotatably mounted on the base, a rotating disk fixedly mounted at one end of the rotating shaft, two first bevel gears fixedly sleeved on the rotating shaft, and two second bevel gears respectively fixedly mounted at one end of two first threaded rods, and the two first bevel gears are respectively meshed and connected with the two second bevel gears.

[0014] As a preferred solution, the clamping assembly includes two fixed blocks symmetrically fixedly mounted on the placement seat, two clamping blocks with trapezoidal longitudinal cross-sections, multiple sliding rods symmetrically fixedly mounted on the two fixed blocks, multiple third telescopic springs respectively sleeved on the multiple sliding rods, two connecting rods respectively fixedly mounted on one end of the multiple sliding rods, and an adjusting component for driving the two connecting rods closer to each other, the two fixed blocks are symmetrically provided with sliding holes, the multiple sliding rods are respectively slidably inserted into the multiple sliding holes, the two clamping blocks are both located between the two fixed blocks, and the two ends of the third telescopic spring are respectively fixedly connected to the clamping block and the fixed block.

[0015] As a preferred solution, the adjusting component includes a bracket fixedly mounted on the placement seat, a second threaded rod mounted on the bracket, a lifting plate rotatably mounted on the lower end of the second threaded rod, two top rods symmetrically fixedly mounted on the lifting plate, two guide plates respectively tilted and fixedly mounted on the two connecting rods, and an adjusting rod fixedly mounted on the upper end of the second threaded rod, the two top rods are respectively located directly above the two guide plates, a threaded hole is opened on the bracket, and the second threaded rod is threadedly inserted in the threaded hole.

[0016] As a preferred solution, a rotation groove is formed at the lower ends of the two push rods, and a rolling wheel is rotatably installed in the two rotation grooves.

[0017] As a preferred solution, two positioning holes are provided on the bracket, positioning rods are vertically slidably inserted into the two positioning holes, and the two positioning rods are vertically fixedly mounted on the lifting plate.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The placement seat is rotatably installed on the moving column and is locked by two limit blocks. When one end of the lead screw needs to be polished after the other end is polished, one end of the limit block is moved out of the limit groove through the cooperation of the transmission assembly, the sliding assembly, the top block and the first telescopic spring, thereby releasing the lock between the placement seat and the moving column, and then the placement seat is driven to rotate 180°, and the limit block is inserted into the limit groove again. When the placement seat rotates, the direction of the lead screw can be reversed without releasing the clamping of the lead screw. The operation process is simple, and there is no need to fix the lead screw multiple times, which saves time and effort and effectively improves the processing efficiency of the lead screw.

[0020] 2. During the grinding process, the driving assembly, the first threaded rod and the moving block cooperate with each other to stably drive the moving column to move toward the grinding disc, which makes it easy to control the moving distance, thereby facilitating the control of the grinding length of one end of the screw and improving the grinding quality of the screw.

[0021] 3. When clamping and fixing the lead screw, the second threaded rod, the lifting plate, the push rod, the guide plate and the connecting rod can cooperate with each other and drive the two clamping blocks to approach each other at the same time, so that the lead screw can be clamped and fixed in the middle position of the placement seat. The clamping block with a trapezoidal longitudinal section can stably clamp the lead screw between the two clamping blocks and the placement seat, and the clamping is stable, avoiding deviation of the lead screw position during the processing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the front three-dimensional cross-sectional structure of a grinding device for screw processing proposed by the present invention;

[0023] Figure 2 It is a schematic diagram of the three-dimensional structure of the placement seat and the clamping assembly;

[0024] Figure 3 It is a schematic diagram of the three-dimensional cross-sectional structure of the placement seat, the clamping assembly, the moving column and the transmission assembly;

[0025] Figure 4 for Figure 1 The enlarged structural diagram at A in the middle;

[0026] Figure 5 for Figure 2 The enlarged structural diagram at B in the middle;

[0027] Figure 6 for Figure 2 The enlarged structural diagram at C in the middle;

[0028] Figure 7 for Figure 3 Enlarged structural diagram at D in the middle.

[0029] In the figure: 1 base, 2 moving column, 3 placing seat, 4 mounting block, 5 spring rod, 6 limiting block, 7 rectangular cavity, 8 limiting groove, 9 first telescopic spring, 10 top block, 11 moving rod, 12 support rod, 13 second telescopic spring, 14 trapezoidal block, 15 support block, 16 grinding disc, 17 driving motor, 18 first threaded rod, 19 moving block, 20 rotating shaft, 21 rotating disc, 22 first bevel gear, 23 second bevel gear, 24 fixed block, 25 clamping block, 26 sliding rod, 27 third telescopic spring, 28 connecting rod, 29 bracket, 30 second threaded rod, 31 lifting plate, 32 push rod, 33 guide plate, 34 adjusting rod, 35 rolling wheel, 36 positioning rod. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] Reference Figure 1-Figure 7 A grinding device for screw processing includes a base 1, on which a grinding assembly is fixedly mounted, a moving column 2 is horizontally slidably mounted on the base 1 through a sliding assembly, a placing seat 3 is rotatably mounted on the upper end of the moving column 2, and a clamping assembly for clamping the screw is provided on the placing seat 3.

[0032] The grinding assembly includes a support block 15 fixedly mounted on the base 1, a rotating shaft rotatably mounted on the support block 15, a grinding disc 16 fixedly mounted at one end of the rotating shaft, and a driving motor 17 fixedly mounted on the support block 15. The output shaft of the driving motor 17 is fixedly connected to the rotating shaft, and the rotating shaft is rotatably mounted on the support block 15. During grinding, the driving motor 17 can be started to drive the rotating shaft to rotate, and then the grinding disc 16 is driven to rotate at high speed through the rotating shaft. When one end of the screw contacts the side of the grinding disc 16, the high-speed rotating grinding disc 16 can grind one end of the screw.

[0033] The sliding assembly includes two first threaded rods 18 rotatably mounted on the base 1 in a horizontally symmetrical manner, two moving blocks 19 respectively threadedly sleeved on the two first threaded rods 18, and a driving component for simultaneously driving the two first threaded rods 18 to rotate. The two moving blocks 19 are fixedly connected to the moving column 2. The driving component includes a rotating shaft 20 rotatably mounted on the base 1, a rotating disk 21 fixedly mounted on one end of the rotating shaft 20, two first bevel gears 22 fixedly sleeved on the rotating shaft 20, and two second bevel gears 23 respectively fixedly mounted on one end of the two first threaded rods 18. The two first bevel gears 22 are respectively meshed and connected with the two second bevel gears 23.

[0034] The movable column 2 is installed on the two first threaded rods 18 through two movable blocks 19. When the two first threaded rods 18 rotate at the same time, the movable block 19 will be driven to move on the first threaded rods 18, thereby driving the movable column 2 to move horizontally on the base 1. After the lead screw is clamped and fixed on the placement seat 3, the rotating shaft 20 can be driven to rotate by rotating the rotating disk 21, and the two first bevel gears 22 can be driven to rotate by the rotating shaft 20 at the same time. Since the first bevel gear 22 is meshed and connected with the second bevel gear 23, the two first threaded rods 18 can be driven to rotate by the second bevel gear 23 at the same time, and then the movable column 2 can be driven to move toward the grinding disk 16 by the rotation of the first threaded rod 18. The moving distance of the movable column 2 can be accurately controlled by rotating the rotating disk 21, so that during the grinding process, it is convenient to control the grinding length of one end of the lead screw, thereby improving the grinding quality of the lead screw.

[0035] The clamping assembly includes two fixed blocks 24 symmetrically fixedly mounted on the placement seat 3, two clamping blocks 25 with trapezoidal longitudinal sections, multiple sliding rods 26 symmetrically fixedly mounted on the two fixed blocks 24, multiple third telescopic springs 27 respectively sleeved on the multiple sliding rods 26, two connecting rods 28 respectively fixedly mounted on one end of the multiple sliding rods 26, and an adjusting component for driving the two connecting rods 28 to approach each other. The two fixed blocks 24 are symmetrically provided with sliding holes, and the multiple sliding rods 26 are respectively slidably inserted into the multiple sliding holes. The two clamping blocks 25 are both located between the two fixed blocks 24. The third telescopic spring 27 is The two ends are fixedly connected to the clamping block 25 and the fixing block 24 respectively. The adjusting component includes a bracket 29 fixedly mounted on the placement seat 3, a second threaded rod 30 mounted on the bracket 29, a lifting plate 31 rotatably mounted on the lower end of the second threaded rod 30, two top rods 32 symmetrically fixedly mounted on the lifting plate 31, two guide plates 33 respectively tilted and fixedly mounted on the two connecting rods 28, and an adjusting rod 34 fixedly mounted on the upper end of the second threaded rod 30. The two top rods 32 are respectively located directly above the two guide plates 33. A threaded hole is opened on the bracket 29, and the second threaded rod 30 is threadedly inserted in the threaded hole.

[0036] When clamping and fixing the lead screw, the lead screw is placed between the two clamping blocks 25, and the two ends of the lead screw are respectively suspended on the placement seat 3, and then the adjusting rod 34 is rotated to drive the second threaded rod 30 to rotate. Under the action of the threaded hole opened on the bracket 29, the second threaded rod 30 can be driven to move vertically downward, and the lifting plate 31 can be driven to move vertically downward. When the lifting plate 31 moves vertically downward, it will drive the two push rods 32 to approach the guide plate 33. Under the action of the guide plate 33, the two connecting rods 28 can be driven to approach each other, drive the sliding rod 26 to move, and then drive the two clamping blocks 25 to approach each other until the two clamping blocks 25 are in contact with the lead screw. When the clamping block 25 contacts with the lead screw, the inclined surface of the clamping block 25 will apply an inclined downward pressure to the lead screw, and at the same time, the placement seat 3 applies a vertical upward supporting force to the lead screw. Under the clamping of multiple forces, the lead screw can be stably clamped and fixed on the placement seat 3, and the clamping and fixing are stable, avoiding deviation of the lead screw position during the processing.

[0037] The lower ends of the two push rods 32 are each provided with a rotation groove, and rolling wheels 35 are rotatably installed in the two rotation grooves. When one end of the push rod 32 slides on the guide plate 33, the rolling wheel 35 can reduce the friction between the push rod 32 and the guide plate 33.

[0038] Two positioning holes are provided on the bracket 29, and positioning rods 36 are vertically slidably inserted in the two positioning holes. The two positioning rods 36 are vertically fixedly installed on the lifting plate 31. When the second threaded rod 30 drives the lifting plate 31 to move vertically downward, the positioning rod 36 can limit the lifting plate 31 to rotate with the second threaded rod 30 when moving.

[0039] The movable column 2 has symmetrically provided limiting grooves 8 on its side, and the lower surface of the placement seat 3 has symmetrically fixed mounting blocks 4, the movable column 2 is located between the two mounting blocks 4, and the two mounting blocks 4 are both provided with L-shaped limiting blocks 6 via spring rods 5, and one end of the two limiting blocks 6 is respectively inserted into the two limiting grooves 8.

[0040] When the placement seat 3 and the moving column 2 are locked, one end of the two limit blocks 6 is inserted into the limit groove 8 provided on the moving column 2 under the elastic force of the spring rod 5, thereby limiting the rotation of the placement seat 3 during processing.

[0041] A rectangular cavity 7 connected to the two limit grooves 8 is provided inside the movable column 2. The cross-sectional width of the rectangular cavity 7 is smaller than the cross-sectional width of the limit grooves 8. A top block 10 is horizontally slidably installed in the two limit grooves 8 through a first telescopic spring 9. The two top blocks 10 are respectively in contact with one end of the two limit blocks 6. A transmission component for driving the two top blocks 10 away from each other is provided in the rectangular cavity 7. A movable hole connected to the rectangular cavity 7 is provided at the lower end of the movable column 2.

[0042] The transmission assembly includes a moving rod 11 vertically slidably installed in the moving hole, two support rods 12 rotatably installed on the moving rod 11, a second telescopic spring 13 fixedly installed at one end of the moving rod 11, and a moving component for driving the moving rod 11 to move vertically upward. The upper end of the moving rod 11 extends into the rectangular cavity 7, and the lower end extends to the bottom of the moving column 2. The ends of the two support rods 12 away from the moving rod 11 are respectively extended into the two limit grooves 8, and are respectively rotatably connected to the two top blocks 10. The end of the second telescopic spring 13 away from the moving rod 11 is fixedly connected to the inner wall of the rectangular cavity 7. The moving component includes a trapezoidal block 14 fixedly installed on the base 1, the inclined surface of the trapezoidal block 14 faces the moving rod 11, and the trapezoidal block 14 is located on the moving path of the moving rod 11.

[0043] When the processing of one end of the lead screw is completed, the moving column 2 is driven by the sliding assembly to move in the direction of the trapezoidal block 14 until the lower end of the moving rod 11 contacts the inclined surface of the trapezoidal block 14. Under the action of the inclined surface of the trapezoidal block 14, the moving rod 11 is driven to move vertically upward, and the second telescopic spring 13 is compressed. At the same time, the moving rod 11 drives the two top blocks 10 in the limit groove 8 to move away from each other through the two support rods 12. During the movement of the top block 10, it will drive the limit block 6 inserted in the limit groove 8 at one end to move outward until the top block 10 completely pushes the limit block 6 out of the limit groove 8, thereby releasing the limit block 6. After the locking between the placement seat 3 and the movable column 2 is removed, the placement seat 3 is rotated to realize the reversal of the direction of the screw. After the direction of the screw is reversed, the movable column 2 is driven away from the trapezoidal block 14. At this time, under the action of the elastic force of the first telescopic spring 9, the two top blocks 10 move into the limit groove 8. At the same time, the limit block 6 will be inserted into the limit groove 8 again, and the placement seat 3 and the movable column 2 will be locked again. The direction of the screw can be reversed without releasing the clamping of the screw. The operation process is simple, and there is no need to fix the screws multiple times, which saves time and effort and effectively improves the processing efficiency of the screw.

[0044] When the screw is turned in the opposite direction, the two top blocks 10 are inserted into the limit groove 8 again, and the locking between the placement seat 3 and the movable column 2 is released, and then the placement seat 3 is rotated to realize the reversal of the screw direction. When the screw direction is reversed, the two top blocks 10 are moved into the limit groove 8 again under the action of the elastic force of the spring rod 5, and the placement seat 3 and the movable column 2 are locked. The screw direction can be reversed without releasing the clamping of the screw. The operation process is simple, and there is no need to fix multiple screws, which saves time and effort, and effectively improves the processing efficiency of the screw.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A grinding device for screw processing, comprising a base (1), characterized in that: A grinding assembly is fixedly mounted on the base (1); a moving column (2) is horizontally slidably mounted on the base (1) via a sliding assembly; a placement seat (3) is rotatably mounted on the upper end of the moving column (2); and a clamping assembly for clamping a lead screw is provided on the placement seat (3); The movable column (2) has symmetrically arranged limit grooves (8) on its side surface, and the lower surface of the placement seat (3) is symmetrically fixed with mounting blocks (4), the movable column (2) is located between the two mounting blocks (4), and the two mounting blocks (4) are both equipped with L-shaped limit blocks (6) via spring rods (5), and one end of the two limit blocks (6) is respectively inserted into the two limit grooves (8); A rectangular cavity (7) is provided inside the movable column (2) and is connected to the two limit grooves (8). The cross-sectional width of the rectangular cavity (7) is smaller than the cross-sectional width of the limit grooves (8). A top block (10) is horizontally slidably installed in the two limit grooves (8) via a first telescopic spring (9). The two top blocks (10) are respectively in contact with one end of the two limit blocks (6). A transmission component for driving the two top blocks (10) to move away from each other is provided in the rectangular cavity (7); The movable column (2) has a movable hole at its lower end which is connected to the rectangular cavity (7). The transmission assembly comprises a movable rod (11) which is vertically slidably mounted in the movable hole, two support rods (12) which are rotatably mounted on the movable rod (11), a second telescopic spring (13) which is fixedly mounted on one end of the movable rod (11), and a movable component for driving the movable rod (11) to move vertically upward. The upper end of the movable rod (11) extends into the rectangular cavity (7), and the lower end extends below the movable column (2). The ends of the two support rods (12) which are away from the movable rod (11) respectively extend into the two limit grooves (8) and are rotatably connected to the two top blocks (10) respectively. The end of the second telescopic spring (13) which is away from the movable rod (11) is fixedly connected to the inner wall of the rectangular cavity (7). The moving component comprises a trapezoidal block (14) fixedly mounted on the base (1), the inclined surface of the trapezoidal block (14) facing the moving rod (11), and the trapezoidal block (14) is located on the moving path of the moving rod (11); The grinding assembly comprises a support block (15) fixedly mounted on the base (1), a rotating shaft rotatably mounted on the support block (15), a grinding disc (16) fixedly mounted on one end of the rotating shaft, and a driving motor (17) fixedly mounted on the support block (15), wherein the output shaft of the driving motor (17) is fixedly connected to the rotating shaft; The sliding assembly comprises two first threaded rods (18) rotatably mounted horizontally and symmetrically on the base (1), two moving blocks (19) respectively threadedly sleeved on the two first threaded rods (18), and a driving component for driving the two first threaded rods (18) to rotate simultaneously, and the two moving blocks (19) are fixedly connected to the moving column (2); The clamping assembly comprises two fixed blocks (24) symmetrically fixedly mounted on the placement seat (3), two clamping blocks (25) with a trapezoidal longitudinal section, a plurality of sliding rods (26) symmetrically fixedly mounted on the two fixed blocks (24), a plurality of third telescopic springs (27) respectively sleeved on the plurality of sliding rods (26), two connecting rods (28) respectively fixedly mounted on one end of the plurality of sliding rods (26), and an adjusting component for driving the two connecting rods (28) to move closer to each other, the two fixed blocks (24) are symmetrically provided with sliding holes, the plurality of sliding rods (26) are respectively slidably inserted into the plurality of sliding holes, the two clamping blocks (25) are both located between the two fixed blocks (24), and the two ends of the third telescopic spring (27) are respectively fixedly connected to the clamping block (25) and the fixed block (24); The adjusting component comprises a bracket (29) fixedly mounted on the placement seat (3), a second threaded rod (30) mounted on the bracket (29), a lifting plate (31) rotatably mounted on the lower end of the second threaded rod (30), two push rods (32) symmetrically fixedly mounted on the lifting plate (31), two guide plates (33) respectively fixedly mounted obliquely on two connecting rods (28), and an adjusting rod (34) fixedly mounted on the upper end of the second threaded rod (30), the two push rods (32) being respectively located directly above the two guide plates (33), the bracket (29) being provided with a threaded hole, and the second threaded rod (30) being threadedly inserted into the threaded hole.

2. A grinding device for screw processing according to claim 1, characterized in that: The driving component comprises a rotating shaft (20) rotatably mounted on the base (1), a rotating disk (21) fixedly mounted on one end of the rotating shaft (20), two first bevel gears (22) fixedly sleeved on the rotating shaft (20), and two second bevel gears (23) respectively fixedly mounted on one end of two first threaded rods (18), the two first bevel gears (22) respectively meshingly connected with the two second bevel gears (23).

3. A grinding device for screw processing according to claim 1, characterized in that: A rotation groove is formed at the lower ends of the two push rods (32), and a rolling wheel (35) is rotatably mounted in the two rotation grooves.

4. A grinding device for screw processing according to claim 1, characterized in that: The bracket (29) is provided with two positioning holes, and positioning rods (36) are vertically slidably inserted into the two positioning holes. The two positioning rods (36) are vertically fixedly mounted on the lifting plate (31).

Images