Positioning clamp for PCBN cutter grinding

Abstract

The utility model relates to the technical field of PCBN cutter grinding, and discloses a PCBN cutter grinding positioning clamp which comprises a bottom plate, a first guide groove is formed in the upper surface of the bottom plate, a grinding assembly is arranged in the first guide groove, and by pulling a driving rod, when a locking block is separated from a locking through groove, the grinding assembly is driven by the driving rod to rotate. The tool body or the placing table is driven to rotate, then the locking block is clamped into the locking through groove again through the elastic force of the first spring, the horizontal rotation degree of the tool body is guaranteed, and then the other end of the tool body is ground again through cooperation of the positioning assembly, the driving assembly and the grinding assembly. According to the positioning fixture for grinding the PCBN cutter, the problem that some existing positioning fixtures for grinding the PCBN cutter are inconvenient to grind the two ends of the cutter is solved, a worker does not need to unlock a cutter body, the operation steps of the worker are greatly reduced, the complexity of grinding work is reduced, and the adjusting efficiency of the cutter body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of PCBN tool grinding, in particular to a positioning fixture for PCBN tool grinding. Background Art

[0002] Cubic boron nitride (PCBN) is a superhard tool material that has advantages over cemented carbide and ceramic tool materials, such as higher hardness, chemical inertness and good thermal stability. It has excellent cutting performance in the cutting of difficult-to-cut materials such as high-hardness materials and high-temperature alloys, and is the most important tool material for turning and milling instead of grinding.

[0003] After consulting the literature, it is learned that the existing patent (publication number: CN219665982U) discloses a positioning fixture for PCBN tool grinding, including a grinding table, a positioning mechanism and a grinding mechanism, the positioning mechanism is located at the top of the grinding table, the grinding mechanism is located at the top of the grinding table, the positioning mechanism includes a slide groove, a groove rod, a PCBN tool body, a screw rod, an anti-slip gasket and a knob, the slide groove is fixedly arranged at the top of the grinding table, the groove rod is installed inside the slide groove, and the groove rod is slidably connected to the slide groove.

[0004] However, the above-mentioned prior art still has the following deficiencies in actual use: when grinding a PCBN tool, it is often necessary to grind both ends of the tool to ensure that both ends of the tool have the same precision and to ensure the cutting efficiency and cutting quality when the tool is used subsequently. When the other end of the tool needs to be ground, the above-mentioned prior art needs to first release the lock on the tool by its locking bolt, then remove the limit block, and then turn the tool for secondary fixation and positioning. The operation steps are relatively cumbersome, and it takes more time for the staff to perform secondary fixation and positioning. The practicability is low and the adjustment efficiency is low. In view of this, we propose a positioning fixture for PCBN tool grinding to solve the above problems. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the shortcomings of the prior art, the utility model provides a positioning fixture for grinding a PCBN tool, which solves the problem that some existing positioning fixtures for grinding a PCBN tool are inconvenient for grinding both ends of the tool.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a positioning fixture for PCBN tool grinding, comprising a base plate, a first guide groove is provided on the upper surface of the base plate, a grinding assembly is arranged inside the first guide groove, a third guide groove is provided on the upper surface of the base plate, a driving assembly is arranged inside the third guide groove, a movable plate is provided on the upper side of the base plate, a rotating groove is provided on the upper surface of the movable plate, a placing table is rotatably connected inside the rotating groove, a tool body is arranged on the upper surface of the placing table, a second guide groove is provided on the upper surface of the movable plate, a positioning assembly is arranged inside the second guide groove, a sliding groove is provided on the inner wall of the rotating groove, a locking block is slidably connected inside the sliding groove, a driving rod is fixedly connected to the outer surface of the locking block, the driving rod slides through the movable plate, a first spring is fixedly connected between the locking block and the inner wall of the sliding groove, the first spring is sleeved on the outer surface of the driving rod, a locking through groove is provided inside the placing table, the locking through groove is adapted to the locking block, a threaded groove extending from the upper surface is provided inside the placing table, and a locking bolt is threadedly connected inside the threaded groove.

[0009] Preferably, the positioning assembly includes a first threaded rod, which is rotatably connected to the inside of the second guide groove, and the rear end of the first threaded rod rotates to pass through the movable plate, and a limit block is provided on the outer surface of the first threaded rod.

[0010] Preferably, the limiting block is slidably connected to the second guide groove, and a side surface of the limiting block facing the tool body is arranged as a groove-shaped inclined surface.

[0011] Preferably, the driving assembly includes a second threaded rod, the second threaded rod is rotatably connected to the inside of the third guide groove, the rear end of the second threaded rod is rotatably passed through the inside of the bottom plate, and the outer surface of the second threaded rod is threadedly sleeved with a fixing block.

[0012] Preferably, the fixed block is slidably connected inside the third guide groove, and the upper surface of the fixed block is fixedly connected to the lower surface of the movable plate.

[0013] Preferably, the grinding assembly includes a guide rod, which is fixedly connected to the inside of the first guide groove, and the outer surface of the guide rod is slidably sleeved with two L-shaped connecting rods, and the two L-shaped connecting rods are both slidably connected to the inside of the first guide groove, and the outer surfaces of the two L-shaped connecting rods are fixedly connected to grinding blocks.

[0014] Preferably, a second spring is fixedly connected between the L-shaped connecting rod and the inner wall of the first guide groove, and two second springs are both sleeved on the outer surface of the guide rod.

[0015] Preferably, a rubber anti-slip pad is provided on the upper surface of the placement table.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides a positioning fixture for PCBN tool grinding, which has the following beneficial effects:

[0018] 1. The positioning fixture for PCBN tool grinding can be used to pull the driving rod. When the locking block is disengaged from the locking groove, the tool body or the placement table can be driven to rotate. Subsequently, the locking block will be clamped into the locking groove again by the elastic force of the first spring to ensure the horizontal rotation of the tool body. Subsequently, the other end of the tool body can be ground again through the cooperation of the positioning component, the driving component and the grinding component, which solves the problem that some existing positioning fixtures for PCBN tool grinding are not convenient for grinding both ends of the tool. There is no need for the staff to unlock the tool body, which greatly reduces the operating steps of the staff, thereby reducing the complexity of the grinding work, improving the adjustment efficiency of the tool body, and thus improving the efficiency and effect of the tool body grinding. It is highly practical and easy to operate.

[0019] 2. The positioning fixture for PCBN tool grinding can drive the limit block close to the tool body by rotating the first threaded rod, so that the tool body is stuck in the groove surface of the limit block, so as to realize the positioning of the tool body and ensure that the tool body and the grinding assembly are in the same position in the horizontal direction, thereby improving the efficiency and effect of subsequent grinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of a positioning fixture for PCBN tool grinding according to the utility model;

[0021] Figure 2 It is a structural schematic diagram of the movable plate of the utility model;

[0022] Figure 3 It is a cross-sectional schematic diagram of the movable plate of the utility model;

[0023] Figure 4 It is a cross-sectional schematic diagram of the placement table of the utility model;

[0024] Figure 5 It is a structural schematic diagram of the bottom plate of the utility model.

[0025] In the figure: 1. bottom plate; 2. first guide groove; 3. third guide groove; 4. movable plate; 5. placement table; 6. tool body; 7. second guide groove; 8. rotating groove; 9. sliding groove; 10. locking block; 11. driving rod; 12. first spring; 13. locking through groove; 14. threaded groove; 15. locking bolt; 16. rubber anti-skid pad; 17. guide rod; 18. L-shaped connecting rod; 19. grinding block; 20. second spring; 21. first threaded rod; 22. limit block; 23. second threaded rod; 24. fixing block. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-Figure 5The utility model provides a technical solution: a positioning fixture for PCBN tool grinding, comprising a base plate 1, a first guide groove 2 is provided on the upper surface of the base plate 1, a grinding assembly is arranged inside the first guide groove 2, a third guide groove 3 is provided on the upper surface of the base plate 1, a driving assembly is arranged inside the third guide groove 3, a movable plate 4 is arranged on the upper side of the base plate 1, a rotating groove 8 is provided on the upper surface of the movable plate 4, a placing table 5 is rotatably connected inside the rotating groove 8, a tool body 6 is arranged on the upper surface of the placing table 5, a second guide groove 7 is provided on the upper surface of the movable plate 4, a positioning assembly is arranged inside the second guide groove 7, a sliding groove 9 is provided on the inner wall of the rotating groove 8, a locking block 10 is slidably connected inside the sliding groove 9, and the locking block 10 The outer surface of the placing table 5 is fixedly connected with a driving rod 11, and the driving rod 11 slides through the movable plate 4. A first spring 12 is fixedly connected between the locking block 10 and the inner wall of the sliding groove 9. The first spring 12 is sleeved on the outer surface of the driving rod 11. A locking through groove 13 is provided inside the placing table 5, and the locking through groove 13 is adapted to the locking block 10. A threaded groove 14 extending from the upper surface is provided inside the placing table 5, and a locking bolt 15 is connected to the internal thread of the threaded groove 14. First, the tool body 6 is placed on the upper side of the placing table 5, and then the tool body 6 is positioned by the locking bolt 15 and the threaded groove 14, and then the positioning assembly is operated to make the tool body 6 in a horizontal direction and on the same axis as the grinding assembly, and then the locking bolt is operated again. 15 locks the tool body 6 to prevent the tool body 6 from moving during the grinding process, and then the grinding of one end of the tool body 6 is achieved through the cooperation of the driving component and the grinding component. When the other end needs to be ground, the tool body 6 is moved away from the grinding component through the driving component, and then the positioning component and the tool body 6 are separated. Subsequently, the driving rod 11 is pulled, and the first spring 12 will shrink, and the locking block 10 will slide inside the sliding groove 9. When the locking block 10 is separated from the locking groove 13, the tool body 6 or the placement table 5 can be driven to rotate. When the locking groove 13 does not correspond to the displacement of the locking block 10, the driving rod 11 is released, and the locking block 10 will always be in contact with the surface of the placement table 5. After the placement table 5 rotates 180 degrees, the locking block 10 will be clamped into the locking groove 13 again by the elastic force of the first spring 12, thereby ensuring that the tool body 6 rotates 180 degrees horizontally. Subsequently, the other end of the tool body 6 is ground again through the cooperation of the positioning component, the driving component and the grinding component. The above structure solves the problem that some existing PCBN tool grinding positioning fixtures are not convenient for grinding both ends of the tool. There is no need for the staff to unlock the tool body 6, which greatly reduces the staff's operating steps, thereby reducing the complexity of the grinding work, improving the adjustment efficiency of the tool body 6, and thus improving the efficiency and effect of grinding the tool body 6. It is highly practical and easy to operate.

[0028] Furthermore, the positioning assembly includes a first threaded rod 21, which is rotatably connected to the inside of the second guide groove 7, and the rear end of the first threaded rod 21 rotates to pass through the movable plate 4. A limit block 22 is provided on the outer surface of the first threaded rod 21, and the limit block 22 is slidably connected to the second guide groove 7. The side of the limit block 22 facing the tool body 6 is set as a groove-shaped inclined surface. By rotating the first threaded rod 21, the staff can drive the limit block 22 to approach the tool body 6, and then the tool body 6 is stuck in the groove surface of the limit block 22, so as to realize the positioning of the tool body 6. The above structure ensures that the tool body 6 is in the same position as the grinding assembly in the horizontal direction, thereby improving the efficiency and effect of subsequent grinding.

[0029] Furthermore, the driving assembly includes a second threaded rod 23, which is rotatably connected to the inside of the third guide groove 3, and the rear end of the second threaded rod 23 rotates to pass through the inside of the base plate 1. The outer surface of the second threaded rod 23 is threadedly sleeved with a fixing block 24, and the fixing block 24 is slidably connected to the inside of the third guide groove 3. The upper surface of the fixing block 24 and the lower surface of the movable plate 4 are fixedly connected. The staff rotates the second threaded rod 23 to drive the fixing block 24 to slide inside the third guide groove 3, and then drives the movable plate 4 to slide on the surface of the base plate 1, so that the tool body 6 is close to the grinding assembly to achieve subsequent grinding processing.

[0030] Furthermore, the grinding assembly includes a guide rod 17, which is fixedly connected to the inside of the first guide groove 2. Two L-shaped connecting rods 18 are slidably sleeved on the outer surface of the guide rod 17. The two L-shaped connecting rods 18 are both slidably connected to the inside of the first guide groove 2. The outer surfaces of the two L-shaped connecting rods 18 are both fixedly connected to grinding blocks 19. The grinding blocks 19 are the existing structure disclosed in the publication number: CN219665982U, so they are not described below. A second spring 20 is fixedly connected between the L-shaped connecting rod 18 and the inner wall of the first guide groove 2. The two second springs 20 are both sleeved on the outer surface of the guide rod 17. The tool body 6 contacts the grinding block 19 and pushes the grinding block 19 to both sides. At this time, the two L-shaped connecting rods 18 will slide to both sides on the surface of the guide rod 17, and the second spring 20 will shrink, thereby finally realizing the grinding of the tool body 6.

[0031] Furthermore, a rubber anti-skid pad 16 is provided on the upper surface of the placement table 5. The setting of the rubber anti-skid pad 16 increases the friction between the tool body 6 and the placement table 5, thereby improving the stability of the tool body 6 when it is initially placed. At the same time, its soft material avoids hard contact between the tool body 6 and the placement table 5 after being fixed by the locking bolt 15, thereby ensuring the safety of the tool body 6 and avoiding wear.

[0032] Working principle:

[0033] When the positioning fixture for PCBN tool grinding is used, the tool body 6 is placed on the upper side of the placement table 5, and then the tool body 6 is positioned by the locking bolt 15 and the threaded groove 14, and then the positioning assembly is operated to make the tool body 6 in a horizontal direction and on the same axis as the grinding assembly, and then the locking bolt 15 is operated again to lock the tool body 6, so as to prevent the tool body 6 from moving during the grinding process, and then the grinding of one end of the tool body 6 is achieved through the cooperation of the driving assembly and the grinding assembly. When the other end needs to be ground, the tool body 6 is moved away from the grinding assembly by the driving assembly, and then the positioning assembly and the tool body 6 are disengaged, and then the driving rod is pulled 11. At this time, the first spring 12 will contract, and the locking block 10 will slide inside the sliding groove 9. When the locking block 10 is disengaged from the locking groove 13, the tool body 6 or the placement table 5 can be driven to rotate. When the locking groove 13 does not correspond to the displacement of the locking block 10, the driving rod 11 is released. At this time, the locking block 10 will always be in contact with the surface of the placement table 5. After the placement table 5 rotates 180 degrees, the locking block 10 will be stuck in the locking groove 13 again by relying on the elastic force of the first spring 12 itself, thereby ensuring that the tool body 6 rotates 180 degrees. Subsequently, the other end of the tool body 6 is ground again through the cooperation of the positioning assembly, the driving assembly and the grinding assembly.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A positioning fixture for PCBN tool grinding, comprising a base plate (1), characterized in that: The upper surface of the bottom plate (1) is provided with a first guide groove (2), a grinding assembly is arranged inside the first guide groove (2), the upper surface of the bottom plate (1) is provided with a third guide groove (3), a driving assembly is arranged inside the third guide groove (3), a movable plate (4) is arranged on the upper side of the bottom plate (1), a rotating groove (8) is provided on the upper surface of the movable plate (4), a placing table (5) is rotatably connected inside the rotating groove (8), a tool body (6) is arranged on the upper surface of the placing table (5), a second guide groove (7) is provided on the upper surface of the movable plate (4), a positioning assembly is arranged inside the second guide groove (7), and a sliding groove (8) is provided on the inner wall of the rotating groove (8). A locking block (10) is slidably connected inside the sliding groove (9), a driving rod (11) is fixedly connected to the outer surface of the locking block (10), the driving rod (11) slides through the movable plate (4), a first spring (12) is fixedly connected between the locking block (10) and the inner wall of the sliding groove (9), the first spring (12) is sleeved on the outer surface of the driving rod (11), a locking through groove (13) is opened inside the placement table (5), the locking through groove (13) and the locking block (10) are adapted, a threaded groove (14) extending from the upper surface is opened inside the placement table (5), and a locking bolt (15) is threadedly connected to the inner surface of the threaded groove (14).

2. A positioning fixture for PCBN tool grinding according to claim 1, characterized in that: The positioning assembly comprises a first threaded rod (21), the first threaded rod (21) being rotatably connected to the inside of the second guide groove (7), the rear end of the first threaded rod (21) being rotatably passed through the movable plate (4), and a limit block (22) being threadedly sleeved on the outer surface of the first threaded rod (21).

3. A positioning fixture for PCBN tool grinding according to claim 2, characterized in that: The limiting block (22) is slidably connected to the second guide groove (7), and a side surface of the limiting block (22) facing the tool body (6) is arranged as a groove-shaped inclined surface.

4. The positioning fixture for PCBN tool grinding according to claim 1, characterized in that: The driving assembly comprises a second threaded rod (23), the second threaded rod (23) being rotatably connected to the inside of the third guide groove (3), the rear end of the second threaded rod (23) being rotatably passed through the inside of the bottom plate (1), and a fixing block (24) being threadedly sleeved on the outer surface of the second threaded rod (23).

5. A positioning fixture for PCBN tool grinding according to claim 4, characterized in that: The fixed block (24) is slidably connected inside the third guide groove (3), and the upper surface of the fixed block (24) and the lower surface of the movable plate (4) are fixedly connected.

6. The positioning fixture for PCBN tool grinding according to claim 1, characterized in that: The grinding assembly comprises a guide rod (17), the guide rod (17) being fixedly connected inside the first guide groove (2), two L-shaped connecting rods (18) being slidably sleeved on the outer surface of the guide rod (17), the two L-shaped connecting rods (18) being slidably connected inside the first guide groove (2), and the outer surfaces of the two L-shaped connecting rods (18) being fixedly connected to grinding blocks (19).

7. A positioning fixture for PCBN tool grinding according to claim 6, characterized in that: A second spring (20) is fixedly connected between the L-shaped connecting rod (18) and the inner wall of the first guide groove (2), and the two second springs (20) are both sleeved on the outer surface of the guide rod (17).

8. The positioning fixture for PCBN tool grinding according to claim 1, characterized in that: The upper surface of the placement table (5) is provided with a rubber anti-slip pad (16).

Images