Single-spiral shallow slot cutter

Abstract

The utility model discloses a single-spiral shallow slot cutter, and relates to the technical field of single-spiral shallow slot cutter structures, which comprises a cutter handle and a cutter head connecting part B. The cutter head connecting part B comprises a rod piece, a rectangular limiting block, a circular truncated cone and a conical cutter holder B which are sequentially and fixedly connected into a whole from bottom to top, and the lower end part of the rod piece is provided with an external thread. Three mounting grooves are formed in the circumferential direction of the conical tool apron B, a diamond tool bit is welded in each of the three mounting grooves, a spiral cutting edge is formed in each diamond tool bit, and the spiral angle of each spiral cutting edge is 5-15 degrees. The utility model has the benefits that the wood is prevented from cracking, and the use cost of customers is saved.

Description

A single-helix shallow groove cutter Technical Field

[0001] This utility model relates to the technical field of single-helix shallow groove cutter structures, and in particular to a single-helix shallow groove cutter. Background Technology

[0002] Single spiral shallow groove cutters are mainly used to process shallow grooves of the desired shape on wood, thereby producing finished wood products. Different types of finished wood products can then be assembled into sofa frames, wardrobes, etc.

[0003] The structure of a single-spiral shallow groove cutter produced in a certain workshop is shown in Figures 1 to 3. It includes a shank 1 and a cutter head connecting part A. The cutter head connecting part A includes a conical cutter seat A2. The conical cutter seat A2 has three mounting slots 3 circumferentially. Each of the three mounting slots 3 is welded with an alloy cutter head 4. The alloy cutter head 4 has a spiral cutting edge 5 with a spiral angle of 15 to 25°. The conical cutter seat A2 of the cutter head connecting part A is welded to the top of the shank 1 and is integrally formed with the shank 1.

[0004] The method by which the worker uses the single spiral shallow groove cutter to process shallow grooves in wood is as follows: The worker fixes the handle 1 of the single spiral shallow groove cutter in the clamp of the engraving machine; the engraving machine drives the handle 1 to rotate around its own axis, the handle 1 drives the conical tool seat A2 of the cutter head connection part A to rotate synchronously, the conical tool seat A2 drives the three alloy cutter heads 4 on it to rotate synchronously, and the spiral cutting edges 5 of the three alloy cutter heads 4 alternately mill the wood to process shallow grooves in the wood.

[0005] However, although this single-spiral shallow grooving tool can create shallow grooves in wood, it still has the following technical drawbacks in practical use:

[0006] I. The spiral cutting edge 5 of the alloy cutter head 4 has a spiral angle of 15~25°. During the milling process of wood, the wood chips produced cannot be discharged smoothly, causing the wood cut edge to burst, resulting in a technical defect of low grooving quality.

[0007] II. After a period of long-term use, one or two alloy cutting tips 4 on the single spiral shallow grooving tool will inevitably be damaged, and the entire single spiral shallow grooving tool will no longer be usable. At this time, the customer can only discard the entire single spiral shallow grooving tool, while the tool holder 1 is still intact. Discarding the tool holder 1 directly will undoubtedly increase the customer's usage cost.

[0008] Therefore, there is an urgent need for a single-spiral shallow groove cutter that prevents wood from chipping and saves customers' operating costs. Summary of the Invention

[0009] The purpose of this invention is to overcome the shortcomings of the prior art and provide a single-helix shallow groove cutter.

[0010] The purpose of this utility model is achieved through the following technical solution: a single spiral shallow groove cutter, which includes a handle and a cutter head connection part B. The cutter head connection part B includes a rod, a rectangular limiting block, a frustum and a conical cutter seat B that are sequentially fixed together from bottom to top. The lower end of the rod is provided with an external thread. The conical cutter seat B is provided with three mounting grooves in the circumference. A diamond cutter head is welded in each of the three mounting grooves. The diamond cutter head is provided with a spiral cutting edge with a spiral angle of 5~15°.

[0011] A rectangular groove is formed on the top surface of the tool holder, and a through hole is formed at the bottom of the rectangular groove, penetrating the bottom surface of the tool holder.

[0012] The rectangular limiting block of the cutter head connection part B is embedded in the rectangular recess, and the rod of the cutter head connection part B passes through the through hole downward. A locking nut is threaded on the external thread of the rod. Under the threaded connection force, the cutter head connection part B is detachably fixed to the cutter handle.

[0013] Three diamond cutting tips are evenly distributed on the conical tool holder B.

[0014] The rod, rectangular limiting block, frustum and conical tool holder B are integrally formed.

[0015] The rectangular groove matches the outer contour of the rectangular limiting block.

[0016] The rake angle of the diamond cutting tip is 15~24°, and the clearance angle is 15~26°.

[0017] This utility model has the following advantages: it prevents wood from chipping at the edges and saves customers' usage costs. Attached Figure Description

[0018] Figure 1 is a schematic diagram of the structure of a prior art single-helix shallow groove cutter;

[0019] Figure 2 is a schematic diagram of the structure without the alloy cutter head in Figure 1;

[0020] Figure 3 is the front view of Figure 1;

[0021] Figure 4 is a schematic diagram of the structure of this utility model;

[0022] Figure 5 is a schematic diagram of the structure without the diamond tool tip in Figure 4;

[0023] Figure 6 is the front view of Figure 4;

[0024] Figure 7 is a partial cross-sectional schematic diagram of Figure 6;

[0025] Figure 8 is a schematic diagram of the structure of the diamond cutting head of this utility model;

[0026] Figure 9 is a schematic diagram of the structure of the cutter head connection part B of this utility model;

[0027] Figure 10 is a schematic diagram of the structure of the knife handle of this utility model;

[0028] In the picture:

[0029] 1-Tool holder, 2-Conical tool holder A, 3-Mounting groove, 4-Carbon tool tip, 5-Helical cutting edge;

[0030] 6-rod, 7-rectangular limiting block, 8-frustum, 9-conical tool holder B, 10-diamond tool head, 11-rectangular countersunk groove, 12-through hole, 13-locking nut. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings. The scope of protection of the present invention is not limited to the following description:

[0032] As shown in Figures 4-10, a single-spiral shallow grooving cutter includes a handle 1 and a cutter head connecting part B. The cutter head connecting part B includes a rod 6, a rectangular limiting block 7, a frustum 8, and a conical cutter seat B9, which are sequentially fixed together from bottom to top. The lower end of the rod 6 has an external thread. The conical cutter seat B9 has three mounting slots 3 circumferentially, and a diamond cutter head 10 is welded into each of the three mounting slots 3. The three diamond cutter heads 10 are evenly distributed on the conical cutter seat B9. The diamond cutter head 10 has a helical cutting edge 5 with a helix angle of 5-15°. Because the helix angle of the helical cutting edge 5 of the diamond cutter head 10 is 5-15°, when the diamond cutter head 10 is milling wood, the wood chips produced can be smoothly discharged, thus preventing the wood from chipping at the cut edge and greatly improving the grooving quality.

[0033] A rectangular groove 11 is formed on the top surface of the tool holder 1, and a through hole 12 is formed at the bottom of the groove 11, penetrating the bottom surface of the tool holder 1; the rectangular limiting block 7 of the tool head connecting part B is embedded in the rectangular groove 11, and the rod 6 of the tool head connecting part B penetrates downward through the through hole 12. A locking nut 13 is threaded on the external thread of the rod 6. Under the threaded connection force, the tool head connecting part B is detachably fixed to the tool holder 1.

[0034] The rod 6, rectangular limiting block 7, frustum 8, and conical tool holder B9 are integrally formed. The rectangular countersunk groove 11 matches the outer contour of the rectangular limiting block 7. The rake angle of the diamond tool tip 10 is 15~24°, and the clearance angle of the diamond tool tip 10 is 15~26°.

[0035] The customer's method for using this single-spiral shallow grooving cutter to create shallow grooves in wood is as follows:

[0036] The customer uses the clamps of the engraving machine to fix the handle 1 of the single spiral shallow groove cutter; the engraving machine drives the handle 1 to rotate around its own axis, and the handle 1 drives the conical tool seat B9 of the cutter head connection part B to rotate synchronously. The conical tool seat B9 drives the three diamond cutter heads 10 on it to rotate synchronously. The spiral cutting edges 5 of the three diamond cutter heads 10 alternately mill the wood to process shallow grooves in the wood.

[0037] After a period of prolonged use, one or two diamond cutting tips 10 on a single-spiral shallow grooving cutter will inevitably be damaged, rendering the entire cutter unusable. In this case, the steps for the customer to replace the old cutting tip connector B are as follows:

[0038] S1. The customer removes the tool holder 1 from the engraving machine;

[0039] S2. The customer unscrews the locking nut 13 from the external thread of the rod 6, and then lifts the tapered tool holder B9 upward. The tapered tool holder B9 drives the rectangular limit block 7 and the rod 6 to move upward synchronously. When the rectangular limit block 7 and the rod 6 are removed from the rectangular groove 11 and the through hole 12 respectively, the tool head connection part B is removed from the tool holder 1.

[0040] S3. After removing the old cutter head connector B from the handle 1, the customer takes out a new cutter head connector B and then connects the new cutter head connector B to the handle 1 to obtain a new single-helix shallow groove cutter, which can then continue to process shallow grooves on the wood.

[0041] As can be seen from steps S2-S3, since the old cutter head connector B can be detached from the tool holder 1, after the old cutter head connector B is detached, the tool holder 1 and the new cutter head connector B can be reassembled to form a new single-helix shallow grooving cutter. In other words, the tool holder 1 is reused instead of being discarded directly. Therefore, compared with the single-helix shallow grooving cutters shown in Figures 1-3, this single-helix shallow grooving cutter greatly saves the customer's usage costs.

Claims

1. A single-helix shallow groove cutter, characterized in that: It includes a handle (1) and a cutting head connection part B. The cutting head connection part B includes a rod (6), a rectangular limiting block (7), a frustum (8), and a conical cutting head B (9) that are sequentially fixed together from bottom to top. The lower end of the rod (6) is provided with an external thread. The conical cutting head B (9) is provided with three mounting slots (3) in the circumference. A diamond cutting head (10) is welded into each of the three mounting slots (3). The diamond cutting head (10) is provided with a helical cutting edge (5). The helix angle of the helical cutting edge (5) is 5~ 15°; A rectangular recess (11) is provided on the top surface of the tool holder (1), and a through hole (12) is provided at the bottom of the rectangular recess (11) that penetrates the bottom surface of the tool holder (1); The rectangular limiting block (7) of the tool head connecting part B is embedded in the rectangular recess (11), and the rod (6) of the tool head connecting part B penetrates the through hole (12) downward. A locking nut (13) is threaded on the external thread of the rod (6). Under the thread connection force, the tool head connecting part B is detachably fixed on the tool holder (1).

2. The single-helix shallow groove cutter according to claim 1, characterized in that: Three diamond cutting tips (10) are evenly distributed on the conical tool holder B (9).

3. The single-helix shallow groove cutter according to claim 1, characterized in that: The rod (6), rectangular limiting block (7), frustum (8) and conical tool holder B (9) are integrally formed.

4. The single-helix shallow groove cutter according to claim 1, characterized in that: The rectangular sink (11) matches the outer contour of the rectangular limiting block (7).

5. A single-spiral shallow groove cutter according to claim 1, characterized in that: The rake angle of the diamond cutter head (10) is 15~24° and the clearance angle of the diamond cutter head (10) is 15~26°.

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