A boring tool structure with a replaceable tool head

Abstract

The utility model discloses a boring cutter structure convenient to replace tool bit, including handle and tool bit, the handle front end is equipped with the clamping part, the clamping part includes a plurality of clamping pieces and is arranged around handle axle center, and there is a gap between adjacent clamping pieces, and the tool bit one end inserts a plurality of clamping pieces and extends to handle interior, the clamping piece surface is equipped with the screw thread, and the clamping part is equipped with the fastening cap, the fastening cap inner wall is conical structure and is equipped with the screw thread, and the fastening cap is connected with the clamping part screw thread, and makes the clamping piece tighten tool bit one end, and the tool bit other end passes through the fastening cap. The utility model provides a boring cutter structure convenient to replace tool bit, and it is convenient to quickly dismounts and installs tool bit, realizes the purpose of quick replacement.

Description

Technical Field

[0001] This utility model relates to the field of lathe tool technology, and in particular to a boring tool structure that facilitates tool head replacement. Background Technology

[0002] Traditional boring tools generally employ an integral or screw-clamped structure. The tool head and tool holder are made as one piece, or a square groove is cut into the front end of the tool holder, and then the tool holder is clamped with screws. When changing the tool head, multiple screws must be loosened one by one, the old tool head removed, the new tool head installed, and then the screws tightened in sequence. Due to the limited space inside the machine tool, the operator can only work with one hand, and the tool is very likely to interfere with the workpiece and fixture.

[0003] Furthermore, once the cutting tip breaks or reaches the end of its lifespan, the tool holder and its internal cooling channel become unusable and need to be replaced. In multi-variety, small-batch production, frequent replacement of cutting tips of different diameters and materials has become the norm. Traditional structures are cumbersome to disassemble and assemble, making it difficult to meet the needs of rapid switching and stable machining. Utility Model Content

[0004] The purpose of this invention is to provide a boring tool structure that facilitates the replacement of the tool head, enabling quick disassembly and assembly of the tool head and achieving rapid replacement.

[0005] The technical solution adopted by the boring tool structure disclosed in this utility model, which facilitates tool head replacement, is as follows: A boring tool structure for easy tool head replacement includes a tool holder and a tool head. The tool holder has a clamping part at its front end, and the clamping part includes a plurality of clamping plates arranged around the axis of the tool holder. There is a gap between adjacent clamping plates. One end of the tool head is inserted into the plurality of clamping plates and extends into the interior of the tool holder. The surface of the clamping plates is provided with threads. A fastening cap is provided corresponding to the clamping part. The inner wall of the fastening cap has a conical structure and is provided with threads. The fastening cap is threadedly connected to the clamping part, so that the clamping plates clamp one end of the tool head, and the other end of the tool head passes through the fastening cap.

[0006] As a preferred embodiment, the surface of the fastening cap is provided with a plurality of planes, which are arranged around the axis of the fastening cap.

[0007] As a preferred embodiment, the blade is inserted into one end of the handle in an inclined structure, and the handle is provided with a crossbar for limiting the position, with the inclined surface abutting against the surface of the crossbar.

[0008] As a preferred embodiment, the tool holder has a cooling channel in the middle, and the clamping part has a spray guide groove corresponding to the cooling channel. The spray guide groove is connected to the cooling channel and is located on the inner wall of the clamping plate.

[0009] As a preferred embodiment, the surface of the blade holder has a threaded hole corresponding to the spray guide groove, and an adjusting bolt is threaded into the threaded hole. The adjusting bolt is used to block the connection between the spray guide groove and the cooling channel.

[0010] The beneficial effects of the boring bar structure disclosed in this utility model, which facilitates the replacement of the cutting head, are as follows: First, one end of the cutting head is inserted into the tool holder, and then the fastening cap is tightened by placing it on the outer layer of the clamping part. Because the inner wall of the fastening cap has a conical structure, the gap between several clamping pieces is squeezed smaller during the tightening process, so that the clamping pieces can fit more tightly against the surface of the cutting head, thereby clamping the cutting head. When the cutting head needs to be disassembled and replaced, the fastening cap only needs to be unscrewed. After the clamping pieces are no longer restricted by the force of the fastening cap, they return to their original shape, allowing the cutting head to be easily removed for replacement, thus achieving the purpose of quick replacement. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of a boring tool structure that facilitates tool head replacement according to this utility model.

[0012] Figure 2 This is an exploded view of a boring tool structure that facilitates tool head replacement according to this utility model.

[0013] Figure 3 This is a cross-sectional view of a boring tool structure that facilitates tool head replacement according to this utility model. Detailed Implementation

[0014] The present invention will be further described and illustrated below with reference to specific embodiments and the accompanying drawings: Please refer to Figure 1 and Figure 2 A boring tool structure for easy replacement of the cutting head 20 includes a tool holder 10 and a cutting head 20. The front end of the tool holder 10 is provided with a clamping part 11. The clamping part 11 includes a plurality of clamping pieces 111 arranged around the axis of the tool holder 10. There is a gap between adjacent clamping pieces 111. One end of the cutting head 20 is inserted into the plurality of clamping pieces 111 and extends into the interior of the tool holder 10. The surface of the clamping pieces 111 is provided with threads. A fastening cap 30 is provided corresponding to the clamping part 11. The inner wall of the fastening cap 30 has a conical structure and is provided with threads. The fastening cap 30 is threadedly connected to the clamping part 11, so that the clamping pieces 111 clamp one end of the cutting head 20, and the other end of the cutting head 20 passes through the fastening cap 30.

[0015] First, insert one end of the cutter head 20 into the handle 10. Then, tighten the fastening cap 30 by placing it on the outer layer of the clamping part 11. Since the inner wall of the fastening cap 30 has a conical structure, the gap between several clamping pieces 111 will be squeezed smaller during the tightening process, so that the clamping pieces 111 can fit more tightly against the surface of the cutter head 20, thus clamping the cutter head 20. When the cutter head 20 needs to be disassembled and replaced, simply unscrew the fastening cap 30. After the clamping pieces 111 lose the restraint of the fastening cap 30, they will return to their original shape, allowing the cutter head 20 to be easily removed for replacement, achieving the purpose of quick replacement.

[0016] In the above scheme, the surface of the fastening cap 30 is provided with several planes, which are arranged around the axis of the fastening cap 30, so that people can clamp the surface of the fastening cap 30 and rotate it when disassembling or installing.

[0017] Furthermore, the end of the cutter head 20 inserted into the handle 10 has an inclined structure, which makes it easy to insert the cutter head 20 into the middle of several clamping plates 111. The handle 10 is provided with a crossbar 12 for limiting the position. The inclined surface abuts against the surface of the crossbar 12, which limits the cutter head 20 to ensure that the cutting edge is always flush with the center when the cutter head 20 is clamped each time it is changed. In addition, the length of the cutter head 20 is limited each time the cutter is changed, saving the time of re-setting the cutter when changing the cutter.

[0018] Please refer to Figure 3 The tool holder 10 has a cooling channel 13 in the middle, and the clamping part 11 has a spray guide groove 112 corresponding to the cooling channel 13. The spray guide groove 112 is connected to the cooling channel 13 and is set on the inner wall of the clamping plate 111. When the tool head 20 is inserted, the clamping plate 111 and the spray guide groove 112 form a channel for coolant to be sprayed out. Thus, during processing, coolant enters from the cooling channel 13 of the tool holder 10 and then enters the spray guide groove 112. The spray guide groove 112 sprays and cools the tool head 20 at the processing position. In actual setup, multiple spray guide grooves 112 can be set and respectively set on different clamping plates 111 to form multi-angle spray cooling.

[0019] The surface of the tool holder 10 corresponds to the threaded hole 14 of the spray guide groove 112. An adjusting bolt 15 is threadedly connected in the threaded hole 14. The adjusting bolt 15 is used to block the connection between the spray guide groove 112 and the cooling channel 13. By controlling the installation depth of the adjusting bolt 15, the cross-sectional area of ​​the connection position between the spray guide groove 112 and the cooling channel 13 can be adjusted, thereby adjusting the flow rate of the coolant, controlling the flow rate of the coolant, and adapting to different processing requirements.

[0020] This utility model provides a boring bar structure that facilitates tool head replacement. First, one end of the tool head is inserted into the tool holder. Then, the fastening cap is screwed on the outer layer of the clamping part and tightened. Because the inner wall of the fastening cap has a conical structure, the gap between several clamping pieces is squeezed and reduced during the tightening process, allowing the clamping pieces to fit more tightly against the surface of the tool head, thus clamping the tool head. When the tool head needs to be disassembled and replaced, simply unscrew the fastening cap. After the clamping pieces are no longer restricted by the force of the fastening cap, they return to their original shape, allowing the tool head to be easily removed for replacement, achieving the purpose of quick replacement.

[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A boring tool structure that facilitates tool head replacement, characterized in that, The tool includes a handle and a blade. The front end of the handle is provided with a clamping part, which includes a plurality of clamping plates arranged around the axis of the handle. There is a gap between adjacent clamping plates. One end of the blade is inserted into the plurality of clamping plates and extends into the interior of the handle. The surface of the clamping plates is provided with threads. A fastening cap is provided corresponding to the clamping part. The inner wall of the fastening cap has a conical structure and is provided with threads. The fastening cap is threadedly connected to the clamping part, so that the clamping plates clamp one end of the blade, and the other end of the blade passes through the fastening cap.

2. The boring tool structure for easy tool head replacement as described in claim 1, characterized in that, The fastening cap has several planes on its surface, and the planes are arranged around the axis of the fastening cap.

3. The boring tool structure for easy tool head replacement as described in claim 1, characterized in that, The blade head is inserted into one end of the handle in an inclined structure, and the handle is provided with a crossbar for limiting the position, with the inclined surface abutting against the surface of the crossbar.

4. The boring tool structure for easy tool head replacement as described in claim 1, characterized in that, The handle has a cooling channel in the middle, and the clamping part has a spray guide groove corresponding to the cooling channel. The spray guide groove is connected to the cooling channel and is located on the inner wall of the clamping piece.

5. The boring tool structure for easy tool head replacement as described in claim 4, characterized in that, The surface of the handle corresponds to the threaded hole of the spray guide groove, and an adjusting bolt is threaded into the threaded hole. The adjusting bolt is used to block the connection between the spray guide groove and the cooling channel.

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