A PCB milling cutter

Abstract

This utility model provides a PCB milling cutter, including a shank for clamping, a chamfered neck for connecting the shank and the cutting edge to change diameter, and a cutting edge for primary cutting. The cutting edge has a straight flute type and a rhomboid symmetrical structure. This milling cutter, by adopting a straight flute rhomboid symmetrical structure, effectively reduces the difficulty of tool manufacturing, allowing it to enter ultra-fine grooves to replace manual removal of chip residue, reducing labor input and improving quality yield.

Description

Technical Field

[0001] This utility model relates to the field of PCB milling cutters, specifically to a PCB milling cutter. Background Technology

[0002] See Figure 1 High-quality PCB metal substrates are currently manufactured using double-edged milling cutters in the industry. PCB metal substrates are mainly copper-based and aluminum-based, and their material properties have good ductility. During the cutting process, due to insufficient dust suction negative pressure or special intersections in the forming path, uneven force will cause chip residue to form on the groove wall or at the intersection of the path. Due to the needs of PCB design, there are some ultra-fine grooves such as V-cuts processed by special processes. The diameter of conventional double-edged cutters is ≤0.5mm. Due to the high manufacturing difficulty, such PCBs with ultra-fine grooves often have chip residue after finishing, which requires manual handling. This wastes manpower and may also cause poor scratches on the board surface. Utility Model Content

[0003] To address the aforementioned issues, this utility model provides a PCB milling cutter. This milling cutter, by adopting a straight-groove rhomboid symmetrical structure, effectively reduces the difficulty of tool manufacturing, enabling it to enter ultra-fine grooves to replace manual removal of chip residues, thereby reducing manual input and improving quality yield.

[0004] To achieve the above-mentioned technical features, the purpose of this utility model is as follows: a PCB milling cutter includes a shank for clamping, a chamfered neck for connecting the shank and the cutting edge to change diameter, and a cutting edge for the main cutting function.

[0005] The cutting edge has a straight groove and a rhomboid symmetrical structure.

[0006] Preferably, the diameter D of the handle is 3.160-3.175 mm.

[0007] Preferably, the total length L of the tool is 36-38.3 mm.

[0008] Preferably, the total length L of the tool is 38.15 mm.

[0009] Preferably, the diameter D of the handle is 3.175 mm.

[0010] Preferably, the chamfer angle α of the chamfered neck is 15±5°.

[0011] Preferably, the chamfer angle α of the chamfered neck is 15°.

[0012] Preferably, the diameter d of the cutting edge is 0.3-0.6 mm, the length L1 is 2.0-4.0 mm, and the acute angle β of the rhombus is 30°-60°.

[0013] Preferably, the acute angle β of the right rhombus shape of the cutting edge is 60°.

[0014] The present invention has the following beneficial effects:

[0015] This invention reduces the difficulty of tool manufacturing by designing a straight groove rhomboid symmetrical structure, enabling it to enter the ultra-fine groove and replace manual removal of chip residue. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a schematic diagram of a standard double-edged knife.

[0018] Figure 2 This is a schematic diagram of the structure of this utility model.

[0019] In the picture: handle 1, chamfered neck 2, blade 3. Detailed Implementation

[0020] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0021] Reference Figure 2 A PCB milling cutter includes a shank 1 for clamping, a chamfered neck 2 for connecting the shank 1 and the cutting edge 3 to change their diameter, and a cutting edge 3 for primary cutting. The cutting edge 3 has a straight flute type and a rhomboid symmetrical structure. This milling cutter, by adopting a straight flute rhomboid symmetrical structure, effectively reduces the difficulty of tool manufacturing, allowing it to enter ultra-fine grooves to replace manual removal of chip residue, reducing labor input and improving quality yield.

[0022] Furthermore, the diameter D of the handle 1 is 3.160-3.175 mm. By adopting the above-mentioned diameter size, adaptability is enhanced.

[0023] Furthermore, the overall tool length L is 36-38.3 mm. By adopting the above length dimensions, adaptability is enhanced.

[0024] Furthermore, the overall length L of the tool is 38.15 mm. This length ensures optimal dimensional requirements.

[0025] Furthermore, the diameter D of the handle 1 is 3.175 mm. This diameter ensures optimal dimensional requirements.

[0026] Furthermore, the chamfer angle α of the chamfered neck 2 is 15±5°. This chamfer range ensures structural strength and reliability.

[0027] Furthermore, the chamfer angle α of the chamfered neck 2 is 15°. This chamfer range ensures optimal structural strength and reliability.

[0028] Furthermore, the diameter d of the cutting edge 3 is 0.3-0.6 mm, the length L1 is 2.0-4.0 mm, and the acute angle β of the rhombus is 30°-60°. These dimensions of the cutting edge 3 ensure...

[0029] Preferably, the acute angle β of the right rhombus shape of the blade 3 is 60°.

[0030] The working process and principle of this utility model:

[0031] This invention is used in the PCB board forming process to remove residual metal chips at the transition area between the inner groove and the V-groove after milling the metal substrate. Specifically, it allows entry into the V-groove to quickly remove residual chips at the transition area, reducing manual labor. This invention includes a shank and a cutting edge, with the cutting edge having a straight-groove rhomboid structure. Compared to existing double-edged blades, this invention's main feature is its straight-groove rhomboid design, which overcomes the ≥0.5mm diameter limitation of double-edged blades, allowing it to smoothly enter the V-groove and remove residual chips. Its symmetrical cutting edge structure provides high dimensional accuracy and does not affect the quality of the groove wall.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A PCB milling cutter, characterized in that, It includes a shank (1) for clamping, a chamfered neck (2) for connecting the shank (1) and the cutting edge (3) to change the diameter, and a cutting edge (3) for the main cutting function. The blade (3) has a straight groove and a rhomboid symmetrical structure.

2. The PCB milling cutter according to claim 1, characterized in that, The diameter D of the handle (1) is 3.160-3.175 mm.

3. The PCB milling cutter according to claim 1, characterized in that, The overall length L of the tool is 36-38.3mm.

4. A PCB milling cutter according to claim 3, characterized in that, The overall length L of the tool is 38.15mm.

5. A PCB milling cutter according to claim 1, characterized in that, The diameter D of the handle (1) is 3.175 mm.

6. A PCB milling cutter according to claim 1, characterized in that, The chamfer angle α of the chamfered neck (2) is 15±5°.

7. A PCB milling cutter according to claim 1, characterized in that, The chamfer angle α of the chamfered neck (2) is 15°.

8. A PCB milling cutter according to claim 1, characterized in that, The diameter d of the blade (3) is 0.3-0.6 mm, the length L1 is 2.0-4.0 mm, and the acute angle β of the rhombus is 30°-60°.

9. A PCB milling cutter according to claim 1, characterized in that, The acute angle β of the rhomboid of the blade (3) is 60°.

Images