Installation cutter handle facilitating cutter replacement

Abstract

The utility model relates to the field of machining, in particular to a mounting cutter handle convenient for replacing a cutter, a plurality of arc-shaped clamping arms are rotatably mounted on the outer side of a cutter handle body through a shaft seat, an arc-shaped extrusion strip is arranged at the upper end of each arc-shaped clamping arm, a semicircular clamping block is arranged in the middle of each arc-shaped clamping arm, and a polyurethane filling block is arranged in the middle of each semicircular clamping block. According to the utility model, the extrusion connection state of the threaded sleeve and the arc-shaped clamping arm is changed by rotating the threaded sleeve, so that the arc-shaped clamping arm deflects in different states so as to lock and release a cutter, and the threaded sleeve is subjected to hard extrusion locking with the arc-shaped clamping arm through threaded rotary movement, so that the clamping stability of the cutter by the arc-shaped clamping arm is effectively ensured; meanwhile, quick replacement operation can be realized, and the working efficiency is effectively improved.

Description

Technical Field

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

[0002] In CNC machining, the tool holder is an important connecting component for mounting the cutting tool (tool head), ensuring stable cutting. Currently, most machining factories use CNC machine tools for production operations. However, in some traditional machine tools, the tool holder and tool head are fixedly connected by a clamping block and bolts. Although this can ensure sufficient connection rigidity and stability, it is inconvenient for operators to replace them. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a tool holder that facilitates tool replacement.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A tool holder for easy tool replacement includes a tool holder body. Multiple arc-shaped clamping arms are rotatably mounted on the outer side of the tool holder body via a bearing seat. Each arc-shaped clamping arm has an arc-shaped extrusion strip at its upper end and a semi-circular locking block in its middle. A polyurethane filling block is provided in the middle of the semi-circular locking block.

[0006] A threaded sleeve is screwed into the middle of the tool holder body. The middle of the threaded sleeve is hollow and a compression ring is provided at the top. The compression ring is in compression contact with the outer wall of the arc-shaped clamping arm.

[0007] In addition, a preferred structure is that the upper middle part of the tool holder body is provided with a mounting groove, and the bottom wall of the mounting groove is provided with a square slot for mounting the tool.

[0008] In addition, a preferred structure is that the bottom of the blade of the cutting tool is provided with a square block to engage with a square slot.

[0009] In addition, a preferred structure is that the outer wall of the blade is provided with multiple blind grooves to fit the semi-circular locking block.

[0010] In addition, a preferred structure is that a rubber pad is provided in the middle of the handle body, and the rubber pad is in pressure contact with the bottom side of the inside of the threaded sleeve.

[0011] Furthermore, in a preferred configuration, the threaded sleeve has a thread at its internal center position, and the threaded sleeve is screwed to the outer wall of the tool holder body via the thread.

[0012] The beneficial effects of this utility model are as follows:

[0013] In this invention, the screw sleeve is rotated to change the compression connection state with the arc-shaped clamping arm, so that the arc-shaped clamping arm can deflect in different states to achieve locking and releasing operations on the tool. The screw sleeve moves by rotating the screw thread to perform hard compression locking with the arc-shaped clamping arm, which effectively ensures the clamping stability of the arc-shaped clamping arm on the tool, and at the same time enables quick replacement operations, effectively improving work efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the external structure of a tool holder for easy tool replacement proposed in this utility model.

[0015] Figure 2 This is a schematic diagram of the arc-shaped clamping arm installation structure proposed in this utility model;

[0016] Figure 3 This is a schematic diagram of the threaded sleeve connection structure proposed in this utility model;

[0017] Figure 4 This is a schematic diagram of the connection structure between the cutting tool and the arc-shaped clamping arm proposed in this utility model.

[0018] In the figure: 1. Tool holder body, 11. Mounting groove, 111. Square slot, 12. Arc-shaped clamping arm, 13. Semi-circular clamping block, 131. Polyurethane filling block, 14. Arc-shaped extrusion strip, 2. Tool, 3. Threaded sleeve, 31. Extrusion ring, 4. Rubber pad, 5. Shaft seat. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Reference Figure 1-4 A tool holder for easy tool replacement includes a tool holder body 1. Multiple arc-shaped clamping arms 12 are rotatably mounted on the outer side of the tool holder body 1 via a bearing seat 5. The arc-shaped clamping arms 12 achieve rotational clamping action via the bearing seat 5.

[0021] Each arc-shaped clamping arm 12 has an arc-shaped extrusion strip 14 at its upper end and a semi-circular clamping block 13 in the middle. The semi-circular clamping block 13 has a polyurethane filling block 131 in the middle, and the two ends of the polyurethane filling block 131 protrude slightly from the outer wall of the semi-circular clamping block 13.

[0022] A threaded sleeve 3 is screwed into the middle of the handle body 1. The middle of the threaded sleeve 3 is hollow and a compression ring 31 is provided at the top. The compression ring 31 is in compression contact with the outer wall of the arc-shaped clamping arm 12.

[0023] The upper middle part of the handle body 1 is provided with a mounting groove 11, and the bottom wall of the mounting groove 11 is provided with a square slot 111. The mounting groove 11 is used to install the tool 2, and the bottom of the tool 2 is inserted into the mounting groove 11.

[0024] The bottom of the blade of the 2 blade is provided with a square block to align with the square slot 111.

[0025] The outer wall of the blade 2 has multiple blind grooves to fit the semi-circular locking block 13, and the polyurethane filling block 131 is pressed into contact with the inner wall of the blind groove.

[0026] A rubber pad 4 is provided in the middle of the handle body 1, and the rubber pad 4 is in contact with the bottom inside of the threaded sleeve 3.

[0027] The threaded sleeve 3 has a thread at its center, and the threaded sleeve 3 is screwed to the outer wall of the tool holder body 1 through the thread.

[0028] In this embodiment, the tool 2 is inserted into the mounting groove 11 and docked with the square slot 111. Then, the threaded sleeve 3 is rotated to make it rotate upward through the thread. During the upward movement, the inner wall of the threaded sleeve 3 squeezes the ring 31 to squeeze the outer wall of the arc-shaped clamping arm 12, causing the arc-shaped clamping arm 12 to deflect inward. During the deflection process, the arc-shaped extrusion strip 14 provided at the top of the arc-shaped clamping arm 12 will squeeze the boss in the middle of the tool 2. Under the guidance of the arc structure, as the arc-shaped extrusion strip 14 gets closer to the tool 2 and squeezes, the tool 2 is subjected to the downward extrusion force of the arc-shaped extrusion strip 14, resulting in a stable clamping connection to the tool holder body 1.

[0029] At the same time, the semi-circular locking block 13 in the middle of the arc-shaped clamping arm 12 is inserted into the blind groove in the middle of the tool 2 to achieve slot docking. A polyurethane filling block 131 is provided in the middle of the semi-circular locking block 13 to improve the connection stability.

[0030] The rubber pad 4 provides friction and damping force when the threaded sleeve 3 rotates, so as to ensure the stability of the threaded sleeve 3.

[0031] During the disassembly and replacement of the tool 2, only the threaded sleeve 3 needs to be rotated to change the compression connection state with the arc-shaped clamping arm 12, so that the arc-shaped clamping arm 12 can rotate to change the locking and releasing operation of the tool 2. By adjusting the thread, a hard compression connection between the threaded sleeve 3 and the arc-shaped clamping arm 12 is achieved, thereby improving the clamping stability of the arc-shaped clamping arm 12 on the tool 2. While ensuring the basic connection stability, a quick replacement function is achieved.

[0032] The cutting tool 2 includes a tool body and a cutting head. The tool body is used for connection and assembly, and the cutting head is used for cutting operations.

[0033] The outer diameter of the cutting head is smaller than that of the cutting tool 2, and a boss structure is formed at the junction of the two. When the arc-shaped clamping arm 12 clamps, it fits the boss structure.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A tool holder for easy tool replacement, comprising a tool holder body (1), characterized in that, The outer side of the tool holder body (1) is rotatably mounted with multiple arc-shaped clamping arms (12) via a bearing seat (5). Each arc-shaped clamping arm (12) has an arc-shaped extrusion strip (14) at its upper end and a semi-circular locking block (13) in the middle. A polyurethane filling block (131) is provided in the middle of the semi-circular locking block (13). The tool holder body (1) is screwed with a threaded sleeve (3) in the middle. The threaded sleeve (3) is hollow in the middle and has a compression ring (31) at the top. The compression ring (31) is in compression contact with the outer wall of the arc-shaped clamping arm (12).

2. The tool holder for easy tool replacement according to claim 1, characterized in that, The upper middle part of the handle body (1) is provided with a mounting groove (11), and the bottom wall of the mounting groove (11) is provided with a square slot (111). The mounting groove (11) is used to install the cutting tool (2).

3. A tool holder for easy tool replacement according to claim 2, characterized in that, The blade (2) has a square block at the bottom of its blade to engage with a square slot (111).

4. A tool holder for easy tool replacement according to claim 2, characterized in that, The outer wall of the blade (2) is provided with multiple blind grooves to fit the semi-circular locking block (13).

5. A tool holder for easy tool replacement according to claim 1, characterized in that, A rubber pad (4) is provided in the middle of the handle body (1), and the rubber pad (4) is in contact with the bottom inside of the threaded sleeve (3).

6. A tool holder for easy tool replacement according to claim 5, characterized in that, The threaded sleeve (3) has a thread at its internal center position, and the threaded sleeve (3) is screwed to the outer wall of the tool holder body (1) through the thread.

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