Blade grinding and positioning clamp

Abstract

The utility model provides a blade grinding positioning clamp which comprises a base, a mounting seat is arranged on the base, a rotatable first clamping plate is arranged on the mounting seat, a limiting groove is formed in the mounting seat, a movable limiting pin is arranged in the limiting groove, and a plurality of positioning grooves are formed in the first clamping plate in the circumferential direction of a rotating shaft of the first clamping plate at intervals. Wherein one positioning groove is communicated with the limiting groove, the limiting pin extends into the positioning groove, a movable seat capable of moving and a driving assembly in transmission connection with the movable seat are further arranged on the base, and a rotatable second clamping plate is arranged on the face, close to the mounting seat, of the movable seat. The driving assembly drives the movable base to get close to or away from the mounting base so that the second clamping plate gets close to or away from the first clamping plate. The technical problem that an existing grinding clamp is poor in universality is solved, the use requirement for machining cutting edges of different angles on a blade is met, and the technical effect of improving the universality of the clamp is achieved.

Description

Technical Field

[0001] This utility model relates to the field of cutting tool processing technology, and in particular to a blade grinding and positioning fixture. Background Technology

[0002] The processing of cutting blades mainly includes steps such as grooving, welding, and grinding of the cutting edge. When grinding the cutting blades, a fixture is needed to fix them in place.

[0003] Chinese utility model patent CN219485334U discloses a blade grinding fixture, comprising: a base with a clamping and fixing groove for accommodating a blade; a longitudinal pressure plate detachably connected to the base and partially extending into the clamping and fixing groove to press the blade into the groove; and a transverse clamping member connected to the base and located on opposite sides of the longitudinal pressure plate, extending into the clamping and fixing groove and abutting against opposite sides of the blade. This blade grinding fixture utilizes the longitudinal pressure plate and the transverse clamping member to clamp and fix the blade to be ground, resulting in good fixation.

[0004] In the aforementioned utility model patent, the blade grinding fixture discloses that the blade to be ground is placed in a clamping and fixing groove, and the bottom wall of the clamping and fixing groove is inclined so that the blade edge can be ground to a certain angle after being placed in the clamping and fixing groove. However, the inclination angle of the bottom wall of the clamping and fixing groove is fixed and cannot be adjusted according to the angle of the blade edge. Therefore, the existing blade grinding fixture has weak versatility and cannot meet the needs of processing blade edges with different angles. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a blade grinding positioning fixture, which solves the problem of weak versatility of existing grinding fixtures.

[0006] According to an embodiment of this utility model, a blade grinding positioning fixture includes a base, a mounting seat on the base, and a rotatable first clamping plate on the mounting seat. The mounting seat has a limiting groove and a movable limiting pin is provided in the limiting groove. The first clamping plate has a plurality of positioning grooves spaced circumferentially along the rotation axis of the first clamping plate. One of the positioning grooves communicates with the limiting groove and the limiting pin extends into the positioning groove. The base also has a movable seat and a drive assembly that is pulverizedly connected to the movable seat. The movable seat has a rotatable second clamping plate on the side near the mounting seat. The drive assembly drives the movable seat to move closer to or away from the mounting seat, causing the second clamping plate to move closer to or away from the first clamping plate.

[0007] Furthermore, the first clamping plate is provided with a contour groove, which is located on the side of the first clamping plate close to the second clamping plate.

[0008] Furthermore, the mounting base is provided with a guide cylinder communicating with the limiting groove, and one end of the guide cylinder is provided with a detachable end cap. The limiting pin is movably disposed in the guide cylinder, and the end cap is provided with a through hole for the limiting pin to pass through. A limiting ring is sleeved on the limiting pin, and the diameter of the limiting ring is larger than the diameter of the through hole.

[0009] Furthermore, a first spring is provided inside the guide cylinder, and the opposite ends of the first spring in the extension direction respectively abut against the limiting ring and the end cap and drive the limiting pin to move towards the first clamping plate.

[0010] Furthermore, one end of the limiting pin extends out of the guide cylinder through the through hole, and the end of the limiting pin extending out of the guide cylinder is provided with a toggle plate.

[0011] Furthermore, the drive assembly includes a threaded rod disposed on the base and a threaded sleeve that cooperates with the threaded rod. The threaded sleeve is provided with a cam, and the cam abuts against the side of the movable seat away from the mounting seat.

[0012] Furthermore, the threaded sleeve is also provided with a handle, which extends away from the movable seat.

[0013] Furthermore, the base is provided with a sliding groove, the length direction of which is consistent with the moving direction of the movable seat, and the movable seat is provided with a protrusion that cooperates with the sliding groove.

[0014] Furthermore, a guide rod is provided in the groove, the axial direction of the guide rod is consistent with the moving direction of the movable seat, and the protrusion is provided with a guide hole that cooperates with the guide rod.

[0015] Furthermore, the drive assembly also includes a second spring, which is sleeved on the guide rod. The opposite ends of the second spring in the extension direction respectively abut against the base and the protrusion and drive the movable seat to move away from the mounting base.

[0016] Compared with the prior art, this utility model has the following beneficial effects: By using a first clamping plate and a second clamping plate to hold the blade to be ground, the drive assembly drives the movable seat to approach the mounting base and drives the second clamping plate to approach the first clamping plate, thus clamping the blade between the first clamping plate and the second clamping plate, thereby fixing the position of the blade during the processing. When it is necessary to grind blades with different cutting edge angles, first move the limiting pin to disengage it from the positioning groove and the limiting groove, so that the first clamping plate can rotate on the mounting base. After rotating the first clamping plate to connect with another positioning groove and the limiting groove, insert the limiting pin into the corresponding positioning groove to lock the position of the first clamping plate again. At this time, when the drive assembly is operated to move the movable seat closer to the mounting base, the second clamping plate rotates relative to the movable seat as the movable seat moves to clamp the blade. The tilt angle of the blade can be adjusted during clamping, and a cutting edge of the corresponding angle can be processed on the blade. This solves the technical problem of weak versatility of existing grinding fixtures, and produces the technical effect of meeting the usage requirements of processing cutting edges of different angles on the blade and improving the versatility of the fixture. Moreover, the clamping operation is simple and convenient to use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a blade grinding and positioning fixture according to an embodiment of the present invention;

[0018] Figure 2 This is a front view of a blade grinding and positioning fixture according to an embodiment of the present invention;

[0019] Figure 3 This is a cross-sectional view of a blade grinding and positioning fixture according to an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the structure of the first clamping plate in a blade grinding and positioning fixture according to an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the mounting base in a blade grinding positioning fixture according to an embodiment of the present invention.

[0022] In the above attached figures: 1. Base; 11. Slide groove; 12. Guide rod; 2. Mounting seat; 21. Limiting groove; 22. Limiting pin; 23. Guide cylinder; 24. End cap; 25. Limiting ring; 26. First spring; 27. Actuating plate; 3. First clamping plate; 31. Positioning groove; 32. Contouring groove; 4. Movable seat; 41. Protrusion; 5. Drive assembly; 51. Threaded rod; 52. Threaded sleeve; 53. Cam; 54. Handle; 55. Second spring; 6. Second clamping plate; 100. Blade. Detailed Implementation

[0023] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0024] like Figures 1 to 5 As shown in the figure, this utility model embodiment proposes a blade grinding positioning fixture for clamping the blade 100 during the blade grinding process to fix the position of the blade 100.

[0025] Please refer to Figure 1 , Figure 2 and Figure 3 The blade grinding positioning fixture includes a base 1, a mounting seat 2 on the base 1, and a rotatable first clamping plate 3 on the mounting seat 2. The mounting seat 2 has a limiting groove 21, and a movable limiting pin 22 is provided within the limiting groove 21. The first clamping plate 3 has multiple positioning grooves 31 spaced circumferentially along its rotation axis. One of the positioning grooves 31 communicates with the limiting groove 21, and the limiting pin 22 extends into this positioning groove 31. When the limiting pin 22 is inserted into the positioning groove 31, it locks the position of the first clamping plate 3 on the mounting seat 2 and restricts the first clamping plate 3 from moving within the mounting seat. The mounting base 2 rotates, and the base 1 is also provided with a movable seat 4 and a drive assembly 5 that is pulverizedly connected to the movable seat 4. The movable seat 4 is provided with a rotatable second clamping plate 6 on the side near the mounting base 2. The drive assembly 5 drives the movable seat 4 to move closer to or away from the mounting base 2, so that the second clamping plate 6 moves closer to or away from the first clamping plate 3. When the second clamping plate 6 moves closer to the first clamping plate 3, it presses the blade 100 to be processed onto the first clamping plate 3 to clamp the blade 100 between the first clamping plate 3 and the second clamping plate 6, thereby fixing the position of the blade 100 on the blade grinding positioning fixture.

[0026] Specifically, the operation steps for clamping the blade 100 using the blade grinding positioning fixture provided in this embodiment are as follows: First, pull out the limiting pin 22 from the positioning groove 31 and rotate the first clamping plate 3 so that the inclination angle of the first clamping plate 3 matches the angle of the cutting edge to be processed on the blade 100. After the first clamping plate 3 is adjusted to the correct position, insert the limiting pin 22 into the corresponding positioning groove 31. Then, place the blade 100 on the side of the first clamping plate 3 near the second clamping plate 6 and operate the driving component 5 to drive the movable seat 4 closer to the mounting base 2. As the movable seat 4 moves, the second clamping plate 6 moves closer to the first clamping plate 3, thus clamping the blade 100 between the first clamping plate 3 and the second clamping plate 6, thereby fixing the position of the blade 100 on the blade grinding positioning fixture during processing. When the blade 100 needs to be removed after processing, operate the driving component 5 to move the movable seat 4 away from the mounting base 2. At this time, the second clamping plate 6 moves away from the mounting base 2. The first clamping plate 3 is described above, and the blade 100 clamped between the first clamping plate 3 and the second clamping plate 6 is released, so that the blade 100 can be removed from the blade grinding positioning fixture. When it is necessary to grind blades 100 with different cutting edge angles, the limiting pin 22 is moved so that the limiting pin 22 exits the positioning groove 31 and the limiting groove 21. At this time, the first clamping plate 3 can rotate on the mounting base 2. Rotating the first clamping plate 3 adjusts the tilt angle of the first clamping plate 3. After the first clamping plate 3 is adjusted to the position, the other positioning groove 31 is connected to the limiting groove 21. Then, the limiting pin 22 is inserted into the corresponding positioning groove 31 to lock the position of the first clamping plate 3 again. At this time, when the driving component 5 is operated so that the movable seat 4 is close to the mounting base 2, the second clamping plate 6 rotates relative to the movable seat 4 as the movable seat 4 moves to clamp the blade 100. The tilt angle of the blade 100 when clamped can be adjusted and a cutting edge of the corresponding angle can be processed on the blade 100. The blade grinding and positioning fixture provided in this embodiment can meet the needs of machining cutting edges of different angles on the blade 100. It has good versatility and is simple and convenient to use for clamping.

[0027] like Figure 2 and Figure 4 As shown, the first clamping plate 3 is provided with a contour groove 32, which is located on the side of the first clamping plate 3 near the second clamping plate 6. The contour groove 32 provided on the first clamping plate 3 is used to accommodate the cutting tool 100 to be processed, and the inner wall of the contour groove 32 fits against the cutting tool 100 to position the cutting tool 100, so as to facilitate clamping the cutting tool 100 and prevent the cutting tool 100 from loosening during processing and moving on the cutting tool grinding and positioning fixture.

[0028] Please combine Figure 3 , Figure 4 and Figure 5 The mounting base 2 is provided with a guide cylinder 23 communicating with the limiting groove 21, and one end of the guide cylinder 23 is provided with a detachable end cap 24. The limiting pin 22 is movably disposed inside the guide cylinder 23, and the end cap 24 is provided with a through hole for the limiting pin 22 to pass through. A limiting ring 25 is sleeved on the limiting pin 22, and the diameter of the limiting ring 25 is larger than the diameter of the through hole. The limiting pin 22 is installed inside the guide cylinder 23 and the opening of the guide cylinder 23 is closed by the end cap 24 to keep the limiting pin 22 in the guide cylinder 23, preventing the limiting pin 22 from falling off the mounting base 2 when it is moved, which helps to improve the structural stability of the blade grinding positioning fixture.

[0029] In this embodiment, a first spring 26 is provided inside the guide cylinder 23. The opposite ends of the first spring 26 in the extension and retraction direction respectively abut against the limiting ring 25 and the end cap 24, driving the limiting pin 22 to move closer to the first clamping plate 3. The elastic force provided by the first spring 26 inside the guide cylinder 23 keeps the limiting pin 22 in the position of extending into the positioning groove 31, preventing the limiting pin 22 from accidentally exiting the positioning groove 31 during processing, which would cause the first clamping plate 3 to rotate unexpectedly on the mounting base 2. When the limiting pin 22 is moved to exit the positioning groove 31, the first spring 26 is further compressed. After the first clamping plate 3 is adjusted to the position, the limiting pin 22 is released, allowing the limiting pin 22 to enter the corresponding positioning groove 31 under the action of the elastic force provided by the first spring 26, thereby automatically locking the position of the first clamping plate 3.

[0030] Please refer to Figure 5 One end of the limiting pin 22 extends out of the guide cylinder 23 through the through hole, and a toggle plate 27 is provided at the end of the limiting pin 22 extending out of the guide cylinder 23. By operating the toggle plate 27, the limiting pin 22 can be moved within the guide cylinder 23, thereby adjusting the tilt angle of the first clamping plate 3.

[0031] Please refer to Figure 1 and Figure 2The drive assembly 5 includes a threaded rod 51 mounted on the base 1 and a threaded sleeve 52 that engages with the threaded rod 51. The threaded sleeve 52 has a cam 53, which abuts against the side of the movable seat 4 away from the mounting base 2. Rotating the threaded sleeve 52 causes the cam 53 to rotate, moving the movable seat 4 towards or away from the mounting base 2. The engagement of the threaded sleeve 52 with the threaded rod 51 locks the position of the cam 53, thus maintaining the movable seat 4 in a position that clamps the blade 100 to be processed, ensuring that the blade grinding positioning fixture securely clamps the blade 100.

[0032] In detail, the threaded sleeve 52 is also provided with a handle 54, which extends away from the movable seat 4. By operating the handle 54, the threaded sleeve 52 can be easily rotated and its rotation direction can be controlled, and the position of the cam 53 can be adjusted to control the movement of the movable seat 4, thus facilitating the operation of the blade grinding positioning fixture.

[0033] like Figure 1 and Figure 2 As shown, the base 1 is provided with a sliding groove 11, the length direction of which is consistent with the moving direction of the movable seat 4, and the movable seat 4 is provided with a protrusion 41 that cooperates with the sliding groove 11. The sliding groove 11 on the base 1 and the protrusion 41 on the movable seat 4 are designed to restrict the direction of movement of the movable seat 4 on the base 1, preventing the base 1 from deviating from a preset direction and causing misalignment between the second clamping plate 6 and the first clamping plate 3. This ensures that the second clamping plate 6 clamps the blade 100 when it is close to the first clamping plate 3, thereby improving the reliability of the blade grinding positioning fixture.

[0034] Specifically, a guide rod 12 is provided within the slide groove 11. The axial direction of the guide rod 12 is consistent with the moving direction of the movable seat 4, and the protrusion 41 is provided with a guide hole that mates with the guide rod 12. The movable seat 4 is installed into the slide groove 11 through the guide hole and the engagement of the guide rod 12, ensuring a tight fit between the movable seat 4 and the base 1, preventing the movable seat 4 from accidentally falling off the base 1 during movement, and thus stabilizing the structure of the blade grinding positioning fixture.

[0035] like Figure 2As shown, the drive assembly 5 also includes a second spring 55, which is sleeved on the guide rod 12. The opposite ends of the second spring 55 in the extension direction abut against the base 1 and the protrusion 41 respectively, driving the movable seat 4 to move away from the mounting seat 2. The elastic force provided by the second spring 55 keeps the movable seat 4 abutting against the cam 53. When the threaded sleeve 52 is rotated to bring the movable seat 4 closer to the mounting seat 2 and the blade 100 is clamped between the first clamping plate 3 and the second clamping plate 6, the second spring 55 is further compressed. When the threaded sleeve 52 is rotated to release the clamping of the blade 100, the second spring 55 gradually returns to its original length and pushes the movable seat 4 away from the mounting seat 2, so that the second clamping plate 6 automatically disengages from the blade 100, thereby facilitating the removal of the finished blade 100 from the blade grinding and positioning fixture.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A blade grinding and positioning fixture, characterized in that: The device includes a base, a mounting seat on the base, and a rotatable first clamping plate on the mounting seat. The mounting seat has a limiting groove and a movable limiting pin is provided in the limiting groove. The first clamping plate has multiple positioning grooves spaced circumferentially along the rotation axis of the first clamping plate. One of the positioning grooves communicates with the limiting groove and the limiting pin extends into the positioning groove. The base also has a movable seat and a drive assembly that is pulverizedly connected to the movable seat. The movable seat has a rotatable second clamping plate on the side near the mounting seat. The drive assembly drives the movable seat to move closer to or away from the mounting seat, causing the second clamping plate to move closer to or away from the first clamping plate.

2. The blade grinding and positioning fixture as described in claim 1, characterized in that: The first clamping plate is provided with a contour groove, which is located on the side of the first clamping plate close to the second clamping plate.

3. The blade grinding and positioning fixture as described in claim 1, characterized in that: The mounting base is provided with a guide cylinder that communicates with the limiting groove, and one end of the guide cylinder is provided with a detachable end cap. The limiting pin is movably disposed in the guide cylinder, and the end cap is provided with a through hole for the limiting pin to pass through. A limiting ring is sleeved on the limiting pin, and the diameter of the limiting ring is larger than the diameter of the through hole.

4. The blade grinding positioning fixture as described in claim 3, characterized in that: The guide cylinder is provided with a first spring. The two opposite ends of the first spring in the extension direction respectively abut against the limiting ring and the end cap and drive the limiting pin to move towards the first clamping plate.

5. The blade grinding positioning fixture as described in claim 3, characterized in that: One end of the limiting pin extends out of the guide cylinder through the through hole, and the end of the limiting pin extending out of the guide cylinder is provided with a toggle plate.

6. The blade grinding positioning fixture as described in claim 1, characterized in that: The drive assembly includes a threaded rod disposed on the base and a threaded sleeve that cooperates with the threaded rod. The threaded sleeve is provided with a cam, and the cam abuts against the side of the movable seat away from the mounting seat.

7. The blade grinding and positioning fixture as described in claim 6, characterized in that: The threaded sleeve is also provided with a handle, which extends away from the movable seat.

8. The blade grinding positioning fixture as described in claim 1, characterized in that: The base is provided with a sliding groove, the length direction of which is consistent with the moving direction of the movable seat, and the movable seat is provided with a protrusion that cooperates with the sliding groove.

9. A blade grinding and positioning fixture as described in claim 8, characterized in that: The groove is provided with a guide rod, the axial direction of which is consistent with the moving direction of the movable seat, and the protrusion is provided with a guide hole that cooperates with the guide rod.

10. A blade grinding and positioning fixture as described in claim 9, characterized in that: The drive assembly also includes a second spring, which is sleeved on the guide rod. The opposite ends of the second spring in the extension direction respectively abut against the base and the protrusion and drive the movable seat to move away from the mounting base.

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