PCBN (Polycrystalline Cubic Boron Nitride) blade grooving cutter

Abstract

The utility model relates to the technical field of PCBN blades, and discloses a PCBN blade grooving cutter which comprises an installation base, a cutter groove is formed in the surface of the installation base, a moving opening is formed in the surface of the inner wall of the cutter groove, a hollow strip is fixedly connected to the back face of the installation base, and sliding openings are formed in the surface and the back face of the hollow strip. A rotating assembly is arranged on the surface of the inner wall of the hollow strip, and a connecting assembly is arranged in the hollow strip. Through cooperative use of structures such as a sliding opening, a rotating assembly, a connecting assembly, a bidirectional lead screw, a bidirectional protruding block, a first inserting rod, an adjusting assembly, a second inserting rod, a shielding block and a connecting groove, the fixing mode of the first inserting rod and the second inserting rod is changed, and the problem that according to traditional equipment, the inserting rods are driven by springs to fix a cutter, and the cutter cannot be fixed easily due to instability of the springs is solved. Therefore, the stability of the cutter after being mounted is ensured, and the cutting precision of the cutter is improved.

Description

Technical Field

[0001] This utility model relates to the field of PCBN blade technology, and in particular to a PCBN blade grooving tool. Background Technology

[0002] A grooving tool is a tool specifically designed for machining grooves or slots on workpieces. It can perform precise grooving operations. As a type of grooving tool, PCBN inserts can provide excellent machining results when high hardness is required. Compared with traditional tool materials, PCBN inserts have higher wear resistance, which can significantly improve machining accuracy and tool life.

[0003] For example, Chinese utility model patent application number 202323384732.9 discloses a diamond tool that is easy to clamp quickly. It includes a tool holder, a tool body, and a connecting part. The tool holder includes a support block, a slot, a movable hole, and a sliding groove. The front end of the support block has a slot, the bottom of the slot has a movable hole, and sliding grooves are provided on both sides below the movable hole. The tool body is placed in the slot, and the tool body has a tool hole corresponding to the movable hole. The connecting part is placed on the sliding groove. The tool body is pressed down and installed on the slot of the tool holder. After installation, the insert rod and the stop block of the connecting part are locked in the tool hole under the support of the spring, limiting the tool hole. The slider is squeezed inward, causing the spring to contract. At this time, the insert rods move closer to each other, separating the insert rods from the tool hole, removing the limitation on the tool hole, and making it easy to remove the tool body. The structure is simple, the operation is convenient and quick, and it is easy to quickly disassemble and use.

[0004] The above solution has the following shortcomings in actual use: This solution uses a spring to move the insert rod to quickly install and remove the tool. However, the cutting force that the tool is subjected to during the machining process will cause relative movement between the tool and the workpiece, resulting in vibration. This vibration can easily cause the spring to contract, causing the insert rod to move, affecting the stability of the tool after installation, and thus reducing the cutting accuracy. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a PCBN blade grooving tool.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a PCBN blade grooving tool, including a mounting base, a tool groove on the surface of the mounting base, a movable opening on the surface of the inner wall of the tool groove, a hollow strip fixedly connected to the back of the mounting base, a sliding opening on both the surface and back of the hollow strip, a rotating assembly on the surface of the inner wall of the hollow strip, a connecting assembly inside the hollow strip, a bidirectional lead screw on the connecting assembly, two bidirectional protrusions threadedly connected to the outer surface of the bidirectional lead screw, a first insertion rod fixedly connected to one side of the bidirectional protrusions, an adjusting assembly on the surface of the first insertion rod, a second insertion rod on one side of the adjusting assembly, a blocking block fixedly connected to the top of the second insertion rod, and a connecting groove on the outer surface of the second insertion rod.

[0007] By setting up the connecting and rotating components, the bidirectional lead screw can be rotated. At this time, the two bidirectional protrusions will move away from each other, so that the two insert rods 1 will be driven away from each other by the two adjusting components until the two blocking blocks are directly above the moving port. At this time, the cutting edge on the tool is aligned with the moving port and placed in the tool groove. Then, the bidirectional lead screw is reversed, so that the two insert rods 1 will drive the two insert rods 2 away from each other until the outer walls of the insert rods 1 and 2 are in contact with the inner wall of the cutting edge on the tool and cooperate with the blocking blocks to limit the tool, thereby completing the tool installation.

[0008] As a further description of the above technical solution:

[0009] The rotating assembly includes a worm gear rotatably connected to the inner wall surface of the hollow strip, one end of which extends through to the outside of the hollow strip and is fixedly connected to a drive block.

[0010] As a further description of the above technical solution:

[0011] The connecting assembly includes connecting shafts rotatably connected to both sides of the inner wall of the hollow strip, and a worm gear is sleeved on the outside of one of the connecting shafts.

[0012] By having the worm drive the worm wheel to rotate, the worm wheel drives one of the connecting shafts to rotate, which in turn drives the bidirectional lead screw to rotate, thereby moving the two bidirectional cams.

[0013] As a further description of the above technical solution:

[0014] The worm gear meshes with the worm.

[0015] As a further description of the above technical solution:

[0016] The adjustment assembly includes a groove formed on one side of the insertion rod, and a threaded rod is rotatably connected to the top of the inner wall of the groove.

[0017] As a further description of the above technical solution:

[0018] A drive rod is fixedly connected to the bottom end of the threaded rod, and a slider is threadedly connected to the outer surface of the threaded rod.

[0019] By rotating the drive rod, the threaded rod is rotated. The slider moves with the rotation of the threaded rod, which in turn moves the second insertion rod upward. This causes the second insertion rod to move the blocking block upward, allowing the height of the second insertion rod and the position of the blocking block to be adjusted, thus accommodating the installation of tools of different thicknesses.

[0020] As a further description of the above technical solution:

[0021] Limiting rods are fixedly connected between the two sides of the inner wall of the hollow strip.

[0022] As a further description of the above technical solution:

[0023] A mounting block is fixedly connected to the top of the mounting base, and the surface of the mounting block is provided with threaded holes.

[0024] This utility model has the following beneficial effects:

[0025] 1. Compared with existing technologies, this PCBN insert grooving tool changes the fixing method of insert rod one and insert rod two by using a combination of structures such as sliding port, rotating assembly, connecting assembly, bidirectional lead screw, bidirectional protrusion, insert rod one, adjusting assembly, insert rod two, blocking block and connecting groove. This avoids the problem that traditional equipment uses springs to drive the insert rods to fix the tool, which is prone to movement of insert rod one and insert rod two due to the instability of the springs. This ensures the stability of the tool after installation and improves the cutting accuracy of the tool.

[0026] 2. Compared with the existing technology, this PCBN blade grooving cutter uses a rotating drive rod to drive the threaded rod to rotate. At this time, the slider moves with the rotation of the threaded rod, which in turn drives the second insertion rod to move upward. This causes the second insertion rod to drive the blocking block to move upward, allowing the height of the second insertion rod and the position of the blocking block to be adjusted. This enables the installation of cutters of different thicknesses and improves the practicality of the PCBN blade grooving cutter. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a PCBN blade grooving tool proposed in this utility model;

[0028] Figure 2 This is a schematic diagram of the hollow strip structure of a PCBN blade grooving tool proposed in this utility model;

[0029] Figure 3This is a schematic diagram of the insert rod structure of a PCBN blade grooving tool proposed in this utility model;

[0030] Figure 4 This is a schematic diagram of the insert rod structure of a PCBN blade grooving tool proposed in this utility model;

[0031] Figure 5 This is a schematic diagram of the tool groove structure of a PCBN blade grooving tool proposed in this utility model.

[0032] Legend:

[0033] 1. Mounting base; 2. Tool groove; 3. Moving port; 4. Hollow bar; 5. Sliding port; 6. Two-way lead screw; 7. Two-way protrusion; 8. Insert rod one; 9. Insert rod two; 10. Blocking block; 11. Connecting groove; 12. Worm gear; 13. Drive block; 14. Connecting shaft; 15. Worm wheel; 16. Slide groove; 17. Threaded rod; 18. Drive rod; 19. Slider; 20. Limiting rod; 21. Mounting block; 22. Threaded hole. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Reference Figure 1-5This utility model provides a PCBN blade grooving tool, comprising a mounting base 1, a tool groove 2 on the surface of the mounting base 1, a moving opening 3 on the surface of the inner wall of the tool groove 2, a hollow strip 4 fixedly connected to the back of the mounting base 1, a sliding opening 5 on both the surface and back of the hollow strip 4, a rotating assembly on the surface of the inner wall of the hollow strip 4, a connecting assembly inside the hollow strip 4, a bidirectional lead screw 6 on the connecting assembly, two bidirectional protrusions 7 threadedly connected to the outer surface of the bidirectional lead screw 6, a first insertion rod 8 fixedly connected to one side of the bidirectional protrusions 7, an adjusting assembly on the surface of the first insertion rod 8, a second insertion rod 9 on one side of the adjusting assembly, a blocking block 10 fixedly connected to the top of the second insertion rod 9, a connecting groove 11 on the outer surface of the second insertion rod 9, a limiting rod 20 fixedly connected between the two sides of the inner wall of the hollow strip 4, and the two bidirectional protrusions 7 slidably connected to the outside of the two limiting rods 20. The moving opening 3 is circular in shape and its diameter is the same as the diameter of the tool opening on the blade. The two bidirectional protrusions 7 extend to the outside of the hollow strip 4 through two sliding ports 5 on both sides. The second insertion rod 9 is located inside the moving port 3 and is arc-shaped. The first insertion rod 8 is adapted to the connecting groove 11 and is located inside the connecting groove 11. After the two blocking blocks 10 are attached, the distance between the two sides is less than the diameter of the moving port 3. By setting the connecting component and the rotating component, the bidirectional lead screw 6 can be driven to rotate. At this time, the two bidirectional protrusions 7 will move away from each other, so that the two first insertion rods 8 can use the two adjusting components to drive the two second insertion rods 9 away from each other until the two blocking blocks 10 are located directly above the moving port 3. At this time, the cutting edge of the tool is aligned with the moving port 3 and placed in the tool groove 2. Then, the bidirectional lead screw 6 is reversed, so that the two first insertion rods 8 can drive the two second insertion rods 9 away from each other until the outer walls of the first insertion rods 8 and the second insertion rods 9 are attached to the inner wall of the cutting edge of the tool and cooperate with the blocking blocks 10 to limit the tool, thereby completing the tool installation.

[0036] The rotating assembly includes a worm gear 12 rotatably connected to the inner wall surface of the hollow strip 4. One end of the worm gear 12 extends through to the outside of the hollow strip 4 and is fixedly connected to a drive block 13. The connecting assembly includes connecting shafts 14 rotatably connected to both sides of the inner wall of the hollow strip 4. A worm wheel 15 is sleeved on the outside of one of the connecting shafts 14. The worm wheel 15 meshes with the worm gear 12. The two ends of the bidirectional lead screw 6 are fixedly connected to the opposite sides of the two connecting shafts 14, respectively. By having the worm gear 12 drive the worm wheel 15 to rotate, the worm wheel 15 drives one of the connecting shafts 14 to rotate, thereby driving the bidirectional lead screw 6 to rotate, which in turn drives the two bidirectional protrusions 7 to move.

[0037] The adjustment assembly includes a groove 16 on one side of the insert rod 8. A threaded rod 17 is rotatably connected to the top of the inner wall of the groove 16. A drive rod 18 is fixedly connected to the bottom end of the threaded rod 17. A slider 19 is threadedly connected to the outer surface of the threaded rod 17. One side of the slider 19 is slidably connected to one side of the inner wall of the groove 16. The drive rod 18 is T-shaped and its bottom end rotates through to one side of the bidirectional protrusion 7. By rotating the drive rod 18, the threaded rod 17 is rotated. At this time, the slider 19 moves with the rotation of the threaded rod 17, thereby driving the insert rod 9 to move upward. This causes the insert rod 9 to drive the blocking block 10 to move upward. The height of the insert rod 9 and the position of the blocking block 10 can be adjusted to accommodate the installation of tools of different thicknesses.

[0038] Mounting block 21 is fixedly connected to the top of mounting base 1, and threaded hole 22 is provided on the surface of mounting block 21.

[0039] Working principle: When in use, first adjust the position of the insertion rod 9 and the blocking block 10 according to the thickness of the PCBN blade. By rotating the drive rod 18, it drives the threaded rod 17 to rotate. At this time, the slider 19 will move with the rotation of the threaded rod 17, thereby driving the insertion rod 9 to move upward, so that the insertion rod 9 drives the blocking block 10 to move upward. The height of the insertion rod 9 and the position of the blocking block 10 can be adjusted.

[0040] Then, rotate the drive block 13 forward, causing it to drive the worm 12 to rotate. The worm 12 then drives the meshing worm wheel 15 to rotate, causing the worm wheel 15 to drive one of the connecting shafts 14 to rotate, which in turn drives the bidirectional lead screw 6 to rotate. At this point, the two bidirectional protrusions 7 will move away from each other as the bidirectional lead screw 6 rotates, thereby adjusting the positions of the first insertion rod 8 and the second insertion rod 9 until the opposite sides of the two bidirectional protrusions 7 are in contact. Stop rotating the drive block 13, and under the self-locking action of the worm wheel 15 and the worm 12, fix the positions of the first insertion rod 8 and the second insertion rod 9, and the two blocking blocks... When the distance between the two sides of the 10 is less than the diameter of the moving port 3, the cutting edge on the tool is aligned with the position of the moving port 3 and placed in the tool groove 2. At this time, the two insert rods 1 8 and 2 9 are both located inside the cutting edge. Then, the drive block 13 is reversed, which drives the two bidirectional protrusions 7 to move closer to each other until the outer walls of insert rods 1 8 and 2 9 are in contact with the inner wall of the cutting edge. At this time, the drive block 13 is stopped from rotating and the positions of insert rods 1 8 and 2 9 are fixed under the self-locking action of the worm wheel 15 and worm 12. With the cooperation of the two blocking blocks 10, the tool installation work can be completed.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A PCBN blade grooving tool, comprising a mounting base (1), characterized in that: The mounting base (1) has a tool groove (2) on its surface and a moving opening (3) on the surface of the inner wall of the tool groove (2). A hollow strip (4) is fixedly connected to the back of the mounting base (1). A sliding opening (5) is provided on both the surface and the back of the hollow strip (4). A rotating component is provided on the surface of the inner wall of the hollow strip (4). A connecting component is provided inside the hollow strip (4). A bidirectional lead screw (6) is provided on the connecting component. Two bidirectional protrusions (7) are threaded on the outer surface of the bidirectional lead screw (6). A first insertion rod (8) is fixedly connected to one side of the bidirectional protrusions (7). An adjusting component is provided on the surface of the first insertion rod (8). A second insertion rod (9) is provided on one side of the adjusting component. A blocking block (10) is fixedly connected to the top of the second insertion rod (9). A connecting groove (11) is provided on the outer surface of the second insertion rod (9).

2. The PCBN blade grooving tool according to claim 1, characterized in that: The rotating assembly includes a worm (12) rotatably connected to the inner wall surface of the hollow strip (4), one end of which extends through to the outside of the hollow strip (4) and is fixedly connected to a drive block (13).

3. A PCBN blade grooving tool according to claim 2, characterized in that: The connecting assembly includes connecting shafts (14) rotatably connected to both sides of the inner wall of the hollow strip (4), and a worm gear (15) is sleeved on the outside of one of the connecting shafts (14).

4. A PCBN blade grooving tool according to claim 3, characterized in that: The worm gear (15) meshes with the worm (12).

5. A PCBN blade grooving tool according to claim 1, characterized in that: The adjustment assembly includes a groove (16) formed on one side of the insert (8), and a threaded rod (17) is rotatably connected to the top of the inner wall of the groove (16).

6. A PCBN blade grooving tool according to claim 5, characterized in that: The bottom end of the threaded rod (17) is fixedly connected to a drive rod (18), and the outer surface of the threaded rod (17) is threadedly connected to a slider (19).

7. A PCBN blade grooving tool according to claim 1, characterized in that: Limiting rods (20) are fixedly connected between the two sides of the inner wall of the hollow strip (4).

8. A PCBN blade grooving tool according to claim 1, characterized in that: The top of the mounting base (1) is fixedly connected to a mounting block (21), and the surface of the mounting block (21) is provided with a threaded hole (22).

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