Turning tool with tool bit capable of being replaced quickly

Abstract

The turning tool comprises a tool handle, the tool bit, a bolt and a limiting assembly, a tool groove is formed in the front end of the tool handle, a counter bore is formed in the top of the tool groove, a threaded hole is formed in the bottom of the tool groove, a through connecting hole is formed in the tool bit, the tool bit is arranged in the tool groove, and the limiting assembly is arranged on the tool bit. The bolt sequentially penetrates through the counter bore, the connecting hole and the threaded hole from top to bottom so that the tool bit can be fixed to the tool handle, and the limiting assembly is arranged on the inner side of the tool groove and abuts against the tail end of the tool bit. According to the turning tool, the tool bit is fixedly connected in the tool groove through the bolt and is tightly jacked through the limiting assembly, when the tool bit needs to be replaced, the tool bit is jacked out by the limiting assembly after the bolt is detached, the situation that the tool bit is clamped in the tool groove or fragments of the tool bit are left in the tool groove can be eradicated or reduced, and the tool bit can be replaced only by detaching a single bolt. And the replacement efficiency of the tool bit is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of turning tools, and more specifically, relates to a turning tool with a replaceable tool head quickly. Background Technique

[0002] A turning tool is one of the commonly used tools in the machining process. Its structure usually includes a tool shank, a tool head, and a fixing component. Since the tool head will inevitably wear during use, or the phenomenon of "collision of the tool" occurs during the machining process, the tool head and the tool shank are usually designed as a detachable structure to facilitate the replacement of the worn tool head at any time.

[0003] In the prior art, for example, a turning tool with a replaceable tool head disclosed in patent CN218656859U, its tool head is fixedly connected to the tool bar by two bolts. On the one hand, it is more cumbersome to disassemble two bolts simultaneously when replacing the tool head; on the other hand, after the tool head collides, the tool head may be partially broken or slightly deformed, resulting in some tool head fragments remaining in the installation groove, which is not convenient to take out, and thus affects the replacement efficiency of the tool head.

[0004] In summary, the existing structure of the turning tool needs to be improved. Content of the Utility Model

[0005] To solve the above problems, the utility model provides a turning tool with a replaceable tool head quickly, which includes a tool shank, a tool head, a bolt, and a limiting component. A tool groove is provided at the front end of the tool shank. A counterbore is provided at the top of the tool groove, and a threaded hole is provided at the bottom. A through connection hole is provided on the tool head. The tool head is arranged in the tool groove. The bolt passes through the counterbore, the connection hole, and the threaded hole from top to bottom in sequence, so as to fix the tool head on the tool shank. The limiting component is arranged inside the tool groove and abuts against the end of the tool head.

[0006] Further, the limiting component includes a limiting block and a limiting spring. The limiting block is slidably arranged in the tool groove. Two ends of the limiting spring are respectively connected to the limiting block and the inner wall of the tool groove.

[0007] Further, the connection hole is a tapered hole, and a tapered step portion is provided on the screw part of the bolt. The tapered step portion is matched with the tapered hole.

[0008] Compared with the prior art, the utility model has the following beneficial effects:

[0009] The turning tool of the utility model fixes the tool head in the tool groove through a bolt and is tightened by the limiting component. When the tool head needs to be replaced, after the bolt is disassembled, the tool head is ejected by the limiting component, which can prevent or reduce the situation that the tool head is stuck in the tool groove or the tool head fragments remain in the tool groove, and only a single bolt needs to be disassembled and assembled, improving the replacement efficiency of the tool head. Description of the Drawings

[0010] Figure 1 This is an exploded view of the overall structure of the present utility model;

[0011] Figure 2 This is a partial structure cross-sectional view of the cutter head part of the present utility model.

[0012] Explanation of the reference numerals in the schematic diagram:

[0013] 1 - tool handle, 2 - cutter head, 3 - bolt, 4 - tool groove, 5 - counterbore, 6 - threaded hole, 7 - connection hole, 8 - limit block, 9 - limit spring, 10 - tapered step part. Specific embodiments

[0014] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present utility model are given in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present utility model more thorough and comprehensive.

[0015] As Figure 1-2 shown, the turning tool with a quickly replaceable cutter head in this embodiment includes a tool handle 1, a cutter head 2, a bolt 3, and a limiting component. A tool groove 4 is provided at the front end of the tool handle 1. A counterbore 5 is provided at the top of the tool groove 4, and a threaded hole 6 is provided at the bottom. A through connection hole 7 is provided on the cutter head 2. The cutter head 2 is arranged in the tool groove 4. The bolt 3 passes through the counterbore 5, the connection hole 7, and the threaded hole 6 in sequence from top to bottom, thereby fixing the cutter head 2 on the tool handle 1.

[0016] The limiting component is arranged inside the tool groove 4 and abuts against the end of the cutter head 2. The limiting component includes a limit block 8 and a limit spring 9. The limit block 8 is slidably arranged in the tool groove 4. Two ends of the limit spring 9 are respectively connected to the limit block 8 and the inner wall of the tool groove 4.

[0017] Preferably, the connection hole 7 is a tapered hole, and a tapered step part 10 is provided on the screw part of the bolt 3. The tapered step part 10 cooperates with the tapered hole.

[0018] The inner side surface of the cutter head 2 fits with the side wall of the tool groove 4, and the bottom side surface of the cutter head 2 fits with the limit block 8. Further, through the connection of the bolt 3 with the threaded hole 6 and the cooperation of the tapered step part 10 with the tapered hole, the cutter head 2 can be firmly fixed in the tool groove 4 to prevent it from shaking in the horizontal and vertical directions.

[0019] When installing the cutter head 2, press the cutter head 2 forcefully into the cutter groove 4, insert the bolt 3, and then tighten it. After the bolt 3 is disassembled, the cutter head 2 is ejected from the cutter groove 4 under the action of the limiting spring 9, which can prevent or reduce the situation that the cutter head 2 is stuck in the cutter groove 4 or the cutter head fragments remain in the cutter groove 4. Moreover, only a single bolt 3 needs to be disassembled and assembled to complete the disassembly and assembly of the cutter head 2, thereby improving the replacement efficiency of the cutter head 2.

[0020] The above-described embodiments merely represent certain implementation manners of the present invention, and the description thereof is relatively specific and detailed. However, it should not be construed as a limitation to the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the appended claims.

Claims

1. A turning tool with a quickly replaceable tool tip, characterized in that: It includes a tool handle, a tool bit, a bolt and a limiting component. A tool groove is provided at the front end of the tool handle. A counterbore is provided at the top of the tool groove, and a threaded hole is provided at the bottom. A through connection hole is provided on the tool bit. The tool bit is arranged in the tool groove. The bolt sequentially passes through the counterbore, the connection hole and the threaded hole from top to bottom, so as to fix the tool bit on the tool handle. The limiting component is arranged inside the tool groove and abuts against the end of the tool bit. The limiting component includes a limiting block and a limiting spring. The limiting block is slidably arranged in the tool groove. Two ends of the limiting spring are respectively connected to the limiting block and the inner wall of the tool groove.

2. The turning tool with a quickly replaceable cutting head according to claim 1, wherein: The connection hole is a tapered hole, and a tapered step portion is provided on the screw part of the bolt. The tapered step portion is matched with the tapered hole.

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