A PDC cutter with anti-falling effect

Abstract

The utility model belongs to the technical field of PCD tools, and in particular, relates to a PDC tool with an anti-falling effect. In view of the problem that the existing PCD tools have a plurality of sets of elastic blocks used to fix the tools during installation, but are troublesome to disassemble and assemble later, the following scheme is proposed, including a tool holder, a clamping assembly arranged above the tool holder, and an insert rod in the middle of the clamping assembly; a cutter head is inserted on the outside of the insert rod. The utility model achieves a wrapping and clamping effect on the cutter head through two sets of symmetrically arranged clamping plates of the clamping assembly, and during the clamping process, the spring rod on the outside of the insert rod can achieve an extrusion effect on the spring rod through the slope groove on one side of the inner part of the cutter head during the process of installing the cutter head on the outside of the insert rod, and when the cutter head is installed to a certain position, the spring rod will pop out and get stuck at the cutter head and the clamping plate, achieving a confinement effect on the overall structure.

Description

Technical Field

[0001] The utility model relates to a PCD tool, in particular to a PDC tool with an anti-falling effect, belonging to the technical field of PCD tools. Background Art

[0002] PCD tools are polycrystalline diamonds synthesized using modern high-pressure technology. They are a composite superhard material sintered from diamond powder and binder cobalt under high temperature and ultra-high pressure conditions. PCD tools are made by welding PCD composite sheets to a carbide or steel tool body. They are superhard tools with significant advantages and a wide range of applications.

[0003] In the prior art, for example, a PCD tool for machining disclosed in announcement number CN211564542U is arranged by inserting the cutter head into the mounting slot, the top pressure block enters the No. 1 positioning hole, the cutter head continues to move upward to the top, the cutter head is rotated until the side pressure block is aligned with the No. 2 positioning hole, the side pressure block enters the No. 2 positioning hole, the positioning block enters the limiting hole of the side pressure block, thereby connecting the cutter head and the connecting seat, and the evenly distributed side pressure blocks make the fixed cutter head evenly stressed.

[0004] However, in actual use, during the use of the above-mentioned PCD tool for machining, the cutter head is fixed by inserting the top pressure block, the side pressure block and the positioning block into the No. 1 positioning hole, the No. 2 positioning hole and the limiting hole of the side pressure block. During the subsequent disassembly and assembly, the top pressure block, the side pressure block and the positioning block are elastically arranged, so the disassembly and assembly will be more troublesome. Utility Model Content

[0005] The utility model aims to solve the problem that during the use of the PCD tool for machining, the tool head is fixed by inserting a top pressure block, a side pressure block and a positioning block into a No. 1 positioning hole, a No. 2 positioning hole and a limiting hole of the side pressure block. During subsequent disassembly and assembly, the top pressure block, the side pressure block and the positioning block are elastically arranged, so that the disassembly and assembly will be troublesome. Therefore, a PDC tool with an anti-falling effect is provided.

[0006] The utility model achieves the above-mentioned purpose through the following technical scheme: a PDC cutter with an anti-falling effect, comprising a cutter seat, a clamping assembly arranged above the cutter seat and an insert rod in the middle of the clamping assembly, wherein a cutter head is inserted into the outer side of the insert rod;

[0007] The clamping assembly comprises two groups of symmetrically arranged clamping plates, the inner sides of the clamping plates are provided with anti-skid pads, and screw rods are rotatably installed at both ends of the inner sides of the clamping plates, and a spring rod is elastically arranged on the outer side of the insertion rod.

[0008] As a further solution of the utility model: the clamping plate and the cutter head are located on one side of the elastic pressure rod and are provided with a slot matching the elastic pressure rod, and the slot is opened on the surface of the clamping plate and the cutter head, and the connection between the cutter head and the screw is provided with a thread groove matching the screw, and the thread groove is opened on the cutter head.

[0009] As a further solution of the utility model: a sliding block is fixedly installed below the clamping plate, and a sliding groove matching the sliding block is provided at the connection between the knife seat and the sliding block, and a tension spring is fixedly installed inside the sliding groove.

[0010] As a further solution of the utility model: the other end of the tension spring is fixedly mounted on the slider.

[0011] As a further solution of the utility model: a mounting groove is provided at the connection between the cutter head and the insertion rod, and a slope groove is provided on one side of the mounting groove located at the elastic pressure rod, and the slope groove is arranged on the mounting groove.

[0012] As a further solution of the utility model: the cutter head includes a plurality of groups of spiral teeth, the plurality of groups of spiral teeth are spirally arranged on the outside of the cutter head, and straight teeth are arranged between two adjacent groups of spiral teeth.

[0013] As a further solution of the utility model: a chip removal groove is provided between the spiral teeth and the straight teeth, and the chip removal groove is provided on the surface of the cutter head.

[0014] The beneficial effects of the utility model are:

[0015] 1. Through the provided clamping plate and the screws at both ends of the clamping plate, the screw and the cutter head are connected by threads, and the spring rod on the outside of the insertion rod will pop out after the cutter head is inserted to a certain position, and pass through the cutter head and the clamping plate, so that the three can be connected, which has the effect of preventing falling off and is relatively simple to remove later;

[0016] 2. The helical teeth are set to achieve the rough processing effect of the workpiece during the machining process, while the straight teeth can achieve the finishing effect of the workpiece after the helical teeth are processed. The uneven parts of the helical teeth processing are processed again through the smooth tooth edge on the outside. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the cutter head and the cutter seat of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the clamping assembly of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the side of the utility model.

[0021] In the figure: 1. tool holder; 2. clamping assembly; 201. clamping plate; 202. anti-skid pad; 203. screw; 204. spring rod; 3. insert rod; 4. tool head; 5. slot; 6. slider; 7. slide groove; 8. tension spring; 9. mounting groove; 10. spiral tooth; 11. straight tooth; 12. chip groove. DETAILED DESCRIPTION

[0022] 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. Embodiment 1

[0023] like Figures 1 to 4 As shown, a PDC cutter with an anti-falling effect comprises a cutter seat 1, a clamping assembly 2 arranged above the cutter seat 1 and an insert rod 3 in the middle of the clamping assembly 2, and a cutter head 4 is inserted into the outer side of the insert rod 3;

[0024] The clamping assembly 2 includes two groups of symmetrically arranged clamping plates 201, the inner side of the clamping plates 201 is provided with anti-slip pads 202, and screws 203 are rotatably installed at both ends of the inner side of the clamping plates 201, and a spring rod 204 is elastically arranged on the outer side of the insertion rod 3.

[0025] The clamping plate 201 and the cutter head 4 are located on one side of the elastic rod 204, and a slot 5 matching the elastic rod 204 is opened, and the slot 5 is opened on the surface of the clamping plate 201 and the cutter head 4, and a threaded groove matching the screw 203 is opened at the connection between the cutter head 4 and the screw 203, and the threaded groove is opened on the cutter head 4. The opening of the slot 5 makes it convenient for the cutter head 4 to be installed in a certain position. The elastic rod 204 can eject the cutter head 4 and the outer side of the insertion rod 3 through its own elasticity, and insert it into the slot 5, so as to connect the cutter head 4, the insertion rod 3 and the clamping plate 201, and the screw 203 can realize the threaded connection between the clamping plate 201 and the cutter head 4, so that the connection between the two is tighter, and the two are prevented from being separated during subsequent processing. Embodiment 2

[0026] In addition to all the technical features of the first embodiment, this embodiment also includes:

[0027] A slider 6 is fixedly installed below the clamping plate 201, and a slide groove 7 matching the slider 6 is provided at the connection between the tool holder 1 and the slider 6. A tension spring 8 is fixedly installed inside the slide groove 7. The slider 6 can realize the connection between the clamping plate 201 and the tool holder 1, and the elastic connection effect of the clamping plate 201 can be achieved through the tension spring 8.

[0028] The other end of the tension spring 8 is fixedly mounted on the slider 6 , and the tension spring 8 can achieve elastic pulling back and elastic connection effects on the clamping plate 201 .

[0029] A mounting groove 9 is provided at the connection between the cutter head 4 and the insertion rod 3, and a slope groove is provided on one side of the spring rod 204 of the mounting groove 9. The slope groove is provided on the mounting groove 9. The mounting groove 9 can facilitate the connection between the cutter head 4 and the insertion rod 3, and the slope groove can realize the springing effect of the spring rod 204 on the outside of the insertion rod 3 when the cutter head 4 is installed on the insertion rod 3, thereby avoiding the inability to install between the cutter head 4 and the insertion rod 3.

[0030] The cutter head 4 includes a plurality of groups of spiral teeth 10, which are spirally arranged on the outside of the cutter head 4, and a straight tooth 11 is arranged between two adjacent groups of spiral teeth 10. The spiral teeth 10 can achieve a rough processing effect on the workpiece when the cutter head 4 is processing. After the spiral teeth 10 are processed, the straight teeth 11 will be processed again at the processing position of the spiral teeth 10, so as to achieve a fine processing effect on the workpiece.

[0031] A chip removal groove 12 is provided between the spiral gear 10 and the straight gear 11 . The chip removal groove 12 is provided on the surface of the cutter head 4 . The chip removal groove 12 can achieve a chip removal effect on waste chips when the spiral gear 10 and the straight gear 11 are processed.

[0032] Working principle: first pull the clamping plate 201 so that the clamping plate 201 drives the slider 6 to slide in the slide groove 7 of the knife seat 1, and the clamping plate 201 can drive the tension spring 8 to move elastically, and then the overall cutter head 4 can be inserted into the insertion rod 3. In the process of the cutter head 4 being inserted into the insertion rod 3, the mounting groove 9 of the cutter head 4 will be sleeved on the outside of the insertion rod 3, and when the insertion rod 3 continues to be inserted into the mounting groove 9 of the cutter head 4, the spring rod 204 on the outside of the insertion rod 3 will be squeezed by the slope groove inside the mounting groove 9, so that the spring rod 204 itself is pressed into the inside of the insertion rod 3 to prevent the spring rod 204 from affecting the installation of the cutter head 4. Then, when the cutter head 4 is inserted to a certain position, the spring rod 204 passes through the slot 5 between the cutter head 4 and the clamping plate 201 through its own elasticity, so that the cutter head 4, the insertion rod 3 and the clamping plate 201 are fixedly connected, and after the cutter head 4 is fully inserted, the clamping plate is released. 201, so that the tension spring 8 under the slider 6 can drive the slider 6 and the clamping plate 201 at the slider 6 to rebound, and in the rebound process, the screws 203 at both ends of the clamping plate 201 will be inserted into the thread groove at the cutter head 4 through their own threads, so that the clamping plate 201 is tightly connected with the cutter head 4, and then the cutter head 4 and the clamping plate 201 are installed and fixed to start using the PCD tool for processing. During the processing, the spiral gear 10 on the outside of the cutter head 4 first performs a rough processing on the workpiece, so that the spiral gear 10 removes a large amount of waste material, and then when the spiral gear 10 rotates again, the spur teeth 11 on one side of the spiral gear 10 will perform secondary processing on the place where the spiral gear 10 is processed through the smooth tooth edge on the outside of itself, and the processing of the spur teeth 11 makes the processing of the workpiece more refined, so that the rough processing and fine processing effects of the workpiece can be achieved through the spiral gear 10 and the spur teeth 11.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A PDC cutter with an anti-falling effect, characterized in that: It comprises a knife seat (1), a clamping assembly (2) arranged above the knife seat (1), and an insertion rod (3) in the middle of the clamping assembly (2), wherein a knife head (4) is inserted into the outer side of the insertion rod (3); The clamping assembly (2) comprises two groups of symmetrically arranged clamping plates (201), the inner sides of the clamping plates (201) are provided with anti-slip pads (202), and screw rods (203) are rotatably mounted at both ends of the inner sides of the clamping plates (201), and a spring rod (204) is elastically arranged on the outer side of the insertion rod (3).

2. A PDC cutter with an anti-falling effect according to claim 1, characterized in that: The clamping plate (201) and the cutter head (4) are provided with a slot (5) matching the spring rod (204) on one side of the spring rod (204), and the slot (5) is provided on the surfaces of the clamping plate (201) and the cutter head (4), and a thread groove matching the screw rod (203) is provided at the connection between the cutter head (4) and the screw rod (203), and the thread groove is provided on the cutter head (4).

3. A PDC cutter with an anti-falling effect according to claim 1, characterized in that: A sliding block (6) is fixedly mounted below the clamping plate (201), and a sliding groove (7) matching the sliding block (6) is provided at the connection between the knife seat (1) and the sliding block (6), and a tension spring (8) is fixedly mounted inside the sliding groove (7).

4. A PDC cutter with an anti-falling effect according to claim 3, characterized in that: The other end of the tension spring (8) is fixedly mounted on the slider (6).

5. The PDC cutter with anti-falling effect according to claim 1, characterized in that: A mounting groove (9) is provided at the connection between the cutter head (4) and the insertion rod (3), and a slope groove is provided on one side of the mounting groove (9) located on the elastic pressure rod (204), and the slope groove is arranged on the mounting groove (9).

6. The PDC cutter with anti-falling effect according to claim 1, characterized in that: The cutter head (4) comprises a plurality of groups of spiral teeth (10), the plurality of groups of spiral teeth (10) being arranged in a spiral shape on the outside of the cutter head (4), and straight teeth (11) being arranged between two adjacent groups of spiral teeth (10).

7. A PDC cutter with an anti-falling effect according to claim 6, characterized in that: A chip removal groove (12) is provided between the spiral teeth (10) and the straight teeth (11); the chip removal groove (12) is provided on the surface of the cutter head (4).

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