Cutter bar and axial tensioning type handle mounting structure

Abstract

The utility model provides a cutter bar and axial tensioning type handle portion installation structure, relates to the cutter technical field, the cutter bar comprises a handle portion and a blade portion, the handle portion is provided with a positioning groove and a screw flat, the positioning groove is provided with a positioning surface, an included angle alpha 1 is formed between the positioning surface and the axis of the cutter bar, and an included angle alpha 2 is formed between the screw flat and the positioning surface. The positioning groove and the screw flat are arranged, a specific angle relation is set, and the positioning groove and the screw flat are used in cooperation with the positioning block, so that when the cutter handle and the clamp are installed, the compression screw acts on the compression screw flat to enable the cutter bar to generate rotating force; the rotating force acts on the positioning block, the cutter bar is in contact with the positioning block, and the cutter bar generates an axial tensioning effect; the effects that the outer circle of the handle part is attached, and the end face is pressed and connected are achieved, and the connecting mode is higher in precision and better in firmness.

Description

Technical Field

[0001] This utility model relates to the field of cutting tool technology, and in particular to a tool holder and an axially tensioned shank mounting structure. Background Technology

[0002] The commonly used method for fastening tool holders is to fix them with screws. By tightening the clamping screws, friction is used to achieve axial fixation and rotational positioning. The drawback of this method is that there is no pull-back effect, and the end face cannot be brought into contact with the screw. Its accuracy and firmness are difficult to improve further. In view of the above-mentioned defects, this application is proposed. Utility Model Content

[0003] The purpose of this utility model is to provide a tool holder and an axially tensioned shank mounting structure, which solves the problem that the current tool holder fastening method, which relies solely on clamping screws for fixation, is difficult to achieve a pulling effect, thereby improving the connection accuracy and firmness between the tool holder and the clamp.

[0004] To solve the above problems, this utility model provides a tool holder, including a shank and a cutting edge. The shank is provided with a positioning groove and a screw flat. The positioning groove has a positioning surface. The positioning surface and the axis of the tool holder have an included angle α1, where 0° < α1 < 90°. The screw flat and the positioning surface have an included angle α2, where 0° < α2 < 90°.

[0005] According to one embodiment of the present invention, the angle range of α1 is 5~85°.

[0006] According to one embodiment of the present invention, the angle range of α2 is 45~89°.

[0007] According to one embodiment of the present invention, the screw flat and the positioning groove are provided in two sets, or more than two sets, with multiple sets of screw flat and positioning groove evenly distributed.

[0008] An axially tensioned shank mounting structure includes a tool holder, a clamping body, a clamping body, and a positioning block. The clamping body has a head with a screw hole for mounting the clamping body and a shank mounting hole for mounting the shank. The positioning block is mounted at the head. The clamping body clamps the screw flat to generate a rotational force on the tool holder. Due to the presence of the included angle α2, this rotational force acts on the positioning block. An angle α1 is provided at the contact point between the tool holder and the positioning block. Under the action of the rotational force, the tool holder generates an axial tensioning effect, achieving the effect of fitting the outer circle of the shank and pressing the end face together. This connection method has higher precision and better robustness.

[0009] According to one embodiment of the present invention, the positioning block is detachably mounted on the head.

[0010] According to one embodiment of the present invention, the head is provided with a mounting groove for mounting a positioning block.

[0011] According to one embodiment of the present invention, the mounting groove is provided with screw holes, and the positioning block is fixed by mounting screws.

[0012] According to one embodiment of the present invention, the clamping body is a clamping screw, and the screw hole is a screw hole.

[0013] According to one embodiment of the present invention, the fixture body also has a tail, which can adopt an ISO standard connection structure or be designed with a professional connection interface.

[0014] The beneficial effects of this utility model are that by setting a positioning groove and a screw flat with a specific angle relationship, and using it in conjunction with a positioning block, when installing the tool holder and the fixture, the clamping screw acts on the clamping screw flat to generate a rotational force on the tool holder; this rotational force acts on the positioning block, the tool holder contacts the positioning block, and the tool holder generates an axial tensioning effect; thus achieving the effect of fitting the outer circle of the handle and pressing the end face together. This connection method has higher precision and better firmness. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 A schematic diagram of the overall structure of the axial tensioning handle mounting structure;

[0017] Figure 2 This is a schematic diagram of the tool holder structure;

[0018] Figure 3 for Figure 2 The right view in the middle;

[0019] Figure 4 for Figure 2 The left view in the middle;

[0020] Figure 5 This is a schematic diagram of the main body of the clamp;

[0021] Figure 6 This is a schematic diagram of the head structure of the fixture body. Detailed Implementation

[0022] The following description is only intended to disclose the present invention so that those skilled in the art can implement it. The embodiments in the following description are merely examples, and those skilled in the art will conceive of other obvious modifications. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other solutions that do not depart from the spirit and scope of the present invention.

[0023] A type of tool holder, such as Figures 2-4 It includes a handle 51 and a blade 52.

[0024] The handle 51 is provided with a positioning groove 53 and a screw flat 54. Two sets of both the positioning groove 53 and the screw flat 54 are provided. The positioning groove 53 has a positioning surface 531, such as... Figure 2 The locating surface 531 has an angle α1 between its axial extension and the axis of the tool holder, with α1 ranging from 5° to 85°. Figure 3 The screw flat 54 and the positioning surface 531 have an included angle α2 between their radial extensions, and the angle range of α2 is 45~89°.

[0025] An axially tensioned shank mounting structure includes the aforementioned tool holder 5, clamp body 1, clamping body 2, and positioning block 3.

[0026] like Figures 5-6 The fixture body 1 has a head 12 and a tail 11. The tail 11 can adopt an ISO standard connection structure, such as a Morse taper shank or a BT standard taper shank, or a professional connection interface can be designed.

[0027] The head 12 is provided with a nail hole 13 for mounting the clamping body 2, a handle mounting hole 14 for mounting the handle 51, and a mounting groove 15 for mounting the positioning block 3, wherein the clamping body 2 is a clamping screw and the nail hole 13 is a screw hole.

[0028] Preferably, two or more sets of nail holes 13 and clamping screws can be provided.

[0029] The positioning block 3 is installed in the mounting groove 15, which has screw holes 16. The positioning block 3 is fixed by mounting screws 4.

[0030] During installation, such as Figure 1 Insert the shank 51 into the shank mounting hole 14, so that the flange face 55 fits against the end face of the fixture body 1. The clamping body 2 is used to clamp the screw flat 54 to generate a rotational force on the tool bar 5. Due to the presence of the included angle α2, this rotational force acts on the positioning block 3. The contact point between the tool bar 5 and the positioning block 3 is provided with an angle α1. Under the action of the rotational force, the tool bar 5 generates an axial tensioning effect. This achieves the effect of fitting the outer circle of the shank and clamping the end face. This connection method has higher precision and better firmness.

[0031] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations and modifications.

Claims

1. A tool holder, characterized in that: It includes a shank (51) and a cutting edge (52). The shank (51) is provided with a positioning groove (53) and a screw flat (54). The positioning groove (53) has a positioning surface (531). The positioning surface (531) and the axis of the tool holder have an included angle α1, 0° < α1 < 90°. The screw flat (54) and the positioning surface (531) have an included angle α2, 0° < α2 < 90°.

2. The tool holder according to claim 1, characterized in that: The angle range of α1 is 5~85°.

3. The tool holder according to claim 2, characterized in that: The angle range of α2 is 45~89°.

4. The tool holder according to any one of claims 1-3, characterized in that: Both the screw flat (54) and the positioning groove (53) are provided in two sets.

5. An axially tensioned shank mounting structure, characterized in that: The device includes a tool holder (5), a clamp body (1), a clamping body (2), and a positioning block (3) as described in any one of claims 1-4. The clamp body (1) has a head (12), which is provided with a nail hole (13) for mounting the clamping body (2) and a shank mounting hole (14) for mounting the shank (51). The positioning block (3) is installed at the head (12). The clamping body (2) is used to clamp the screw flat (54) to generate a rotational force on the tool holder (5). The tool holder (5) contacts the positioning block (3). Under the action of the rotational force, the tool holder (5) generates an axial tension.

6. The axial tensioning shank mounting structure according to claim 5, characterized in that: The positioning block (3) is detachably mounted on the head (12).

7. The axial tensioning shank mounting structure according to claim 6, characterized in that: The head (12) is provided with a mounting groove (15) for mounting the positioning block (3).

8. The axial tensioning shank mounting structure according to claim 7, characterized in that: The mounting groove (15) is provided with screw holes (16), and the positioning block (3) is fixed by mounting screws (4).

9. The axial tensioning shank mounting structure according to any one of claims 5-8, characterized in that: The clamping body (2) is a clamping screw.

10. The axial tensioning shank mounting structure according to any one of claims 5-8, characterized in that: The clamp body (1) also has a tail (11).

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