Screw tap for sheet metal working

Abstract

The utility model discloses a screw tap for sheet metal working, which comprises a rod body part, the side parts of a first cutting part, a second cutting part, a third cutting part and a fourth cutting part are fixedly connected with limiting blocks for limiting, and a fixing screw is mounted in the rod body part in a threaded manner; through the design of structures such as a working part, a limiting block, a rod body part and a mounting block, a first cutting part, a second cutting part, a third cutting part and a fourth cutting part are all detachably mounted on the rod body part through matching of the limiting block with a limiting groove and matching of the mounting block with a fixing screw; therefore, after one or more of the first cutting part, the second cutting part, the third cutting part and the fourth cutting part are damaged, the first cutting part, the second cutting part, the third cutting part and the fourth cutting part can be detached through the limiting blocks and the fixing screws, so that damaged parts can be detached and replaced from the rod body part. Damaged parts can be detached and replaced, and maintainability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of machining tools, in particular to a tap for sheet metal machining. Background Art

[0002] A tap is a common hardware tool, also called a thread tap. It has a groove on its axial direction and is usually used to process cylindrical or conical internal threads on workpieces. The tap is the most important tool for processing internal threads in the manufacturing industry. It has been used for a long time and in large quantities in the machinery industry and related industries. It is a large-scale and widely used tool for manufacturing internal threads.

[0003] A tap (Announcement No. CN215431918U) is provided in the prior art. The utility model includes a working section, which includes a base and a screw thread. The base is provided with a chip removal groove extending in the axial direction. A plurality of screw threads are arranged on the peripheral surface of the base between two adjacent chip removal grooves. The screw threads are arranged to extend in the axial direction of the base in a spiral manner. The groove between two adjacent screw threads is used as a second groove. The axial spacing between two adjacent second grooves is equal. The screw thread includes a cutting tooth and a correction tooth arranged at its rear end and continuous. The cutting tooth includes at least two ventral teeth extending in the same direction as the screw thread. The groove between two adjacent ventral teeth in the same cutting tooth is used as a first groove. The first groove is arranged to extend in the axial direction of the base in a spiral manner. The middle part of two adjacent ventral teeth of the same cutting tooth cannot be cut. When the middle part is cut to the above-mentioned middle part, the chips are broken. Therefore, the chips generated in the processing of the tap are mostly debris. The debris is easily discharged from the chip removal groove, so the cutting resistance will not increase, thereby extending the service life of the tap.

[0004] During the use of the tap, when the tapping teeth of the tap need to be replaced due to tapping wear or damage, other parts of the tap also need to be replaced. Therefore, we need to propose a tap for sheet metal processing. Utility Model Content

[0005] The utility model aims to provide a tap for sheet metal processing, which can be used to disassemble and replace damaged parts when the tap is worn or damaged during tapping, and has good maintainability, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A tap for sheet metal processing comprises a rod body portion, on which a working portion is arranged, and the working portion comprises a first cutting portion, a second cutting portion, a third cutting portion and a fourth cutting portion, the sides of the first cutting portion, the second cutting portion, the third cutting portion and the fourth cutting portion are all fixedly connected with limit blocks for limiting, the sides of the rod body portion are provided with multiple groups of limit grooves for limiting the limit blocks, the limit blocks are inserted in the limit grooves, the sides of the first cutting portion, the second cutting portion, the third cutting portion and the fourth cutting portion are all fixedly connected with mounting blocks, the mounting blocks are provided with fixing screws, and the fixing screws are threadedly installed in the rod body portion.

[0008] Preferably, the sides of the first cutting portion, the second cutting portion, the third cutting portion and the fourth cutting portion are all fixedly connected with two groups of positioning blocks.

[0009] Preferably, the side of the rod body is provided with a plurality of positioning grooves corresponding to the positioning blocks, and the positioning blocks are plugged and installed in the positioning grooves.

[0010] Preferably, one side of the first cutting part, the second cutting part, the third cutting part and the fourth cutting part are fixedly connected with a connecting block, and the other side of the first cutting part, the second cutting part, the third cutting part and the fourth cutting part are provided with a connecting groove for plugging in the connecting block.

[0011] Preferably, the connecting block on the side of the first cutting part is inserted into the connecting groove opened on the side of the second cutting part, the connecting block on the side of the second cutting part is inserted into the connecting groove opened on the side of the third cutting part, the connecting block on the side of the third cutting part is inserted into the connecting groove opened on the side of the fourth cutting part, and the connecting block on the side of the fourth cutting part is inserted into the connecting groove opened on the side of the first cutting part.

[0012] Preferably, both sides of the first cutting portion, the second cutting portion, the third cutting portion and the fourth cutting portion are provided with a first avoidance groove and a second avoidance groove corresponding to the fixing screws.

[0013] Preferably, a plurality of threaded holes corresponding to the fixing screws are provided on the side of the rod body, and one end of the fixing screw is threadedly installed in the threaded hole.

[0014] Preferably, the surface of the limiting block is in contact with the inner wall of the limiting groove.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] Through the design of the working part, the limit block, the rod body and the mounting block and other structures, the first cutting part, the second cutting part, the third cutting part and the fourth cutting part are all detachably mounted on the rod body through the limit block cooperating with the limit groove, and the mounting block cooperating with the fixing screw. Therefore, after one or more of the first cutting part, the second cutting part, the third cutting part and the fourth cutting part are damaged, they can be disassembled through the limit block and the fixing screw, so that the damaged parts can be disassembled and replaced from the rod body. When the tap is worn or damaged during the use of the tap, the damaged parts can be disassembled and replaced, and the maintainability is good. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 This is a schematic diagram of the split structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the rod body structure of the utility model;

[0020] Figure 4 This is a schematic structural diagram of the third cutting part of the utility model;

[0021] Figure 5 For this utility model Figure 2 Schematic diagram of the enlarged structure of area A in the middle.

[0022] In the figure: 1. chip groove; 2. rod body; 3. working part; 301. first cutting part; 302. second cutting part; 303. third cutting part; 304. fourth cutting part; 4. limit block; 5. positioning block; 6. connecting groove; 7. connecting block; 8. limit groove; 9. positioning groove; 10. threaded hole; 11. mounting block; 12. fixing screw; 13. first avoidance groove; 14. second avoidance groove. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figure 1-5 , the utility model provides a technical solution:

[0025] A tap for sheet metal processing, comprising a rod body 2, on which a working part 3 is arranged, the working part 3 comprising a first cutting part 301, a second cutting part 302, a third cutting part 303 and a fourth cutting part 304, the sides of the first cutting part 301, the second cutting part 302, the third cutting part 303 and the fourth cutting part 304 are all fixedly connected with a limiting block 4 for limiting, the side of the rod body 2 is provided with a plurality of groups of limiting grooves 8 for limiting the limiting block 4, the limiting block 4 is inserted into the limiting groove 8, the sides of the first cutting part 301, the second cutting part 302, the third cutting part 303 and the fourth cutting part 304 are all fixedly connected with a mounting block 11, the mounting block 11 is provided with a fixing screw 12, and the fixing screw 12 is threadedly installed in the rod body 2;

[0026] The limiting block 4 can be positioned by cooperating with the limiting groove 8, so as to improve the stability of the first cutting portion 301, the second cutting portion 302, the third cutting portion 303 and the fourth cutting portion 304, and prevent the first cutting portion 301, the second cutting portion 302, the third cutting portion 303 and the fourth cutting portion 304 from shaking on the rod body 2 after being installed. The first cutting portion 301, the second cutting portion 302, the third cutting portion 303 and the fourth cutting portion 304 can be fixedly installed on the rod body 2 by the fixing screws 12;

[0027] The first cutting portion 301, the second cutting portion 302, the third cutting portion 303 and the fourth cutting portion 304 are all provided with arc-shaped portions on their sides. The arc-shaped portion on the side of the first cutting portion 301 and the arc-shaped portions of the adjacent second cutting portion 302 and the fourth cutting portion 304 form a chip removal groove 1. The arc-shaped portion on the side of the third cutting portion 303 and the arc-shaped portions of the adjacent second cutting portion 302 and the fourth cutting portion 304 also form a chip removal groove 1. The chip removal groove 1 facilitates chip removal.

[0028] The sides of the first cutting part 301, the second cutting part 302, the third cutting part 303 and the fourth cutting part 304 are all fixedly connected with two groups of positioning blocks 5, and the side of the rod body 2 is provided with multiple groups of positioning grooves 9 corresponding to the positioning blocks 5, and the positioning blocks 5 are inserted and installed in the positioning grooves 9;

[0029] By setting the positioning block 5, the positions of the positioning blocks 5 on the sides of the first cutting part 301, the second cutting part 302, the third cutting part 303 and the fourth cutting part 304 are all different, so that when the damaged first cutting part 301, the second cutting part 302, the third cutting part 303 and the fourth cutting part 304 are replaced, the corresponding accessories can be found through the positioning block 5 through the matching positioning block 5 and the positioning groove 9;

[0030] One side of the first cutting portion 301, the second cutting portion 302, the third cutting portion 303 and the fourth cutting portion 304 is fixedly connected with a connecting block 7, and the other side of the first cutting portion 301, the second cutting portion 302, the third cutting portion 303 and the fourth cutting portion 304 is provided with a connecting groove 6 for plugging the connecting block 7;

[0031] The connection block 7 on the side of the first cutting part 301 is inserted into the connection groove 6 opened on the side of the second cutting part 302, the connection block 7 on the side of the second cutting part 302 is inserted into the connection groove 6 opened on the side of the third cutting part 303, the connection block 7 on the side of the third cutting part 303 is inserted into the connection groove 6 opened on the side of the fourth cutting part 304, and the connection block 7 on the side of the fourth cutting part 304 is inserted into the connection groove 6 opened on the side of the first cutting part 301;

[0032] The connection block 7 cooperates with the connection groove 6, so that the stability of the first cutting part 301, the second cutting part 302, the third cutting part 303 and the fourth cutting part 304 after installation can be improved;

[0033] Both sides of the first cutting portion 301 , the second cutting portion 302 , the third cutting portion 303 and the fourth cutting portion 304 are provided with a first avoidance groove 13 and a second avoidance groove 14 corresponding to the fixing screw 12 ;

[0034] The side of the rod body 2 is provided with a plurality of threaded holes 10 corresponding to the fixing screws 12, and one end of the fixing screw 12 is threadedly installed in the threaded hole 10;

[0035] By providing the first avoidance groove 13 and the second avoidance groove 14, when installing the fixing screw 12, it is convenient for the fixing screw 12 to pass through the first avoidance groove 13 and the second avoidance groove 14 and then be threadedly installed in the threaded hole 10;

[0036] The surface of the limiting block 4 is in contact with the inner wall of the limiting groove 8;

[0037] When in use, the limiting blocks 4 on the sides of the first cutting part 301, the second cutting part 302, the third cutting part 303 and the fourth cutting part 304 are inserted into the limiting grooves 8 provided on the rod body 2. The limiting blocks 4 are fitted with the inner walls of the limiting grooves to position the limiting blocks 4 to prevent the first cutting part 301, the second cutting part 302, the third cutting part 303 and the fourth cutting part 304 from shaking on the rod body 2 after they are installed. When the first cutting part 301, the second cutting part 302, the third cutting part 303 and the fourth cutting part 304 are installed on the rod body 2, the first cutting part The connecting block 7 on the side of the cutting part 301 is inserted into the connecting groove 6 provided on the side of the second cutting part 302, the connecting block 7 on the side of the second cutting part 302 is inserted into the connecting groove 6 provided on the side of the third cutting part 303, the connecting block 7 on the side of the third cutting part 303 is inserted into the connecting groove 6 provided on the side of the fourth cutting part 304, and the connecting block 7 on the side of the fourth cutting part 304 is inserted into the connecting groove 6 provided on the side of the first cutting part 301, so that the first cutting part 301, the second cutting part 302, the third cutting part 303 and the fourth cutting part 304 are positioned by the connecting block 7 and the connecting groove 6;

[0038] After the first cutting portion 301, the second cutting portion 302, the third cutting portion 303 and the fourth cutting portion 304 are mounted on the rod body 2, the fixing screws 12 are tightened so that the first cutting portion 301, the second cutting portion 302, the third cutting portion 303 and the fourth cutting portion 304 can be fixedly mounted on the rod body 2;

[0039] When one or more of the first cutting portion 301 , the second cutting portion 302 , the third cutting portion 303 and the fourth cutting portion 304 are damaged, the damaged parts can be removed from the rod body 2 and replaced by removing the fixing screws 12 .

[0040] 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 tap for sheet metal processing, characterized in that: include: A rod body portion (2), wherein a working portion (3) is provided on the rod body portion (2), and the working portion (3) comprises a first cutting portion (301), a second cutting portion (302), a third cutting portion (303) and a fourth cutting portion (304); The side portions of the first cutting portion (301), the second cutting portion (302), the third cutting portion (303) and the fourth cutting portion (304) are all fixedly connected with a limiting block (4) for limiting the position, and the side portion of the rod body (2) is provided with a plurality of groups of limiting grooves (8) for limiting the position of the limiting blocks (4), and the limiting blocks (4) are inserted into the limiting grooves (8); The side portions of the first cutting portion (301), the second cutting portion (302), the third cutting portion (303) and the fourth cutting portion (304) are all fixedly connected to a mounting block (11), and a fixing screw (12) is provided on the mounting block (11), and the fixing screw (12) is threadedly mounted in the rod body (2).

2. A tap for sheet metal processing according to claim 1, characterized in that: The sides of the first cutting portion (301), the second cutting portion (302), the third cutting portion (303) and the fourth cutting portion (304) are all fixedly connected with two groups of positioning blocks (5).

3. A tap for sheet metal processing according to claim 2, characterized in that: The side of the rod body (2) is provided with a plurality of groups of positioning grooves (9) corresponding to the positioning blocks (5), and the positioning blocks (5) are inserted and installed in the positioning grooves (9).

4. A tap for sheet metal processing according to claim 1, characterized in that: One side of the first cutting portion (301), the second cutting portion (302), the third cutting portion (303) and the fourth cutting portion (304) is fixedly connected to a connecting block (7), and the other side of the first cutting portion (301), the second cutting portion (302), the third cutting portion (303) and the fourth cutting portion (304) is provided with a connecting groove (6) for plugging the connecting block (7).

5. A tap for sheet metal processing according to claim 4, characterized in that: The connecting block (7) on the side of the first cutting part (301) is inserted into the connecting groove (6) opened on the side of the second cutting part (302), the connecting block (7) on the side of the second cutting part (302) is inserted into the connecting groove (6) opened on the side of the third cutting part (303), the connecting block (7) on the side of the third cutting part (303) is inserted into the connecting groove (6) opened on the side of the fourth cutting part (304), and the connecting block (7) on the side of the fourth cutting part (304) is inserted into the connecting groove (6) opened on the side of the first cutting part (301).

6. A tap for sheet metal processing according to claim 1, characterized in that: A first avoidance groove (13) and a second avoidance groove (14) corresponding to the fixing screw (12) are provided on both sides of the first cutting portion (301), the second cutting portion (302), the third cutting portion (303) and the fourth cutting portion (304).

7. The sheet metal processing tap according to claim 1, characterized in that: The side of the rod body (2) is provided with a plurality of groups of threaded holes (10) corresponding to the fixing screws (12), and one end of the fixing screw (12) is threadedly installed in the threaded hole (10).

8. The sheet metal processing tap according to claim 1, characterized in that: The surface of the limiting block (4) is in contact with the inner wall of the limiting groove (8).

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