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Milling cutter for processing flexible board and forming process thereof

A molding process and flexible board technology, applied in milling cutters, metal processing equipment, manufacturing tools, etc., can solve the problems of poor rigidity and poor cutting performance of milling cutters, and achieve improved service life, high processing efficiency, and small milling resistance. Effect

Active Publication Date: 2012-08-01
ZHEJIANG DEWEI CEMENTED CARBIDE MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For this reason, the technical problem to be solved by the present invention lies in the problem that existing milling cutters for processing flexible circuit boards have poor rigidity and poor cutting performance, and then provide a more rigid Good, high processing efficiency, strong durability, good dimensional accuracy and edge quality of the milling cutter and its forming process

Method used

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  • Milling cutter for processing flexible board and forming process thereof
  • Milling cutter for processing flexible board and forming process thereof
  • Milling cutter for processing flexible board and forming process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] figure 1 Shown is a milling cutter for processing flexible boards according to the present invention, which includes a tool holder 1, one end of which is extended into a milling cutter head 2, and the surface of the milling cutter head 2 is formed with two circles in the same direction. The spiral groove 3 forms a milling edge, and the end of the milling bit 2 is provided with a V-shaped cutting surface; the angle ω of the helix angle of the spiral groove 3 is 30°.

[0036] The outer diameter φD of the tool holder 1 is 3.175 mm, the outer diameter φd of the milling head 2 is 1.8 mm, and the core circle diameter φK of the milling head 2 is 50% of the outer diameter φd of the milling head 2 %, that is 0.9mm.

[0037] figure 2 It is an A-A view obtained by cutting along the direction perpendicular to the cutting edge of the milling cutter head. It can be seen from this view that the milling cutter is formed with double-ended teeth, and the relief angle α1 of one end too...

Embodiment 2

[0050] Embodiment 1 of the milling cutter for processing flexible boards in this embodiment is basically the same, and the difference lies in:

[0051] The angle ω of the helix angle of the helical groove 3 is 32°. The milling cutter is formed with double-end teeth, wherein one end tooth relief angle α1 is 13°, and the other end tooth relief angle α2 is 29°. The rake angle γ of the milling cutter is 4°. The end tooth rake angle γ1 of the milling cutter is 4°. The outer diameter φD of the tool holder is 3.175mm, and the outer diameter φd of the milling head 2 is 0.4mm. The core diameter φK of the milling head 2 is 0.20mm. The distance e between one edge of the end teeth of the milling cutter and the center is 0.02 mm. The end tooth of the milling cutter is a Closed groove type, and the width of the land f formed by it is 0.02 mm.

Embodiment 3

[0053] Embodiment 1 of the milling cutter for processing flexible boards in this embodiment is basically the same, and the difference lies in:

[0054] The angle ω of the helix angle of the helical groove 3 is 28°. The milling cutter is formed with double-end teeth, one end tooth relief angle α1 is 17°, and the other end tooth relief angle α2 is 31°. The rake angle γ of the milling cutter is 8°. The end tooth rake angle γ1 of the milling cutter is 8°. The outer diameter φD of the tool handle is 3.175mm, and the outer diameter φd of the milling head 2 is 3.175mm. The core circle diameter φK of the milling head 2 is 1.59mm. The distance e between one edge of the end teeth of the milling cutter and the center is 0.09 mm. The end tooth of the milling cutter is a Closed groove type, and the width of the margin f formed by it is 0.16mm.

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Abstract

The invention discloses a milling cutter for processing a flexible board and a forming process thereof. The milling cutter comprises a cutter shank (1), wherein one end of the cutter shank (1) extends to form a milling cutter head (2), two spiral grooves (3) in the same encirclement direction are formed on the surface of the milling cutter head (2) for forming a milling blade, and a V-port cutting surface is arranged at the tail end of the milling cutter head (2); and the angles omega of the spiral angles of the spiral grooves (3) are 28-32 degrees. The invention simultaneously discloses a forming process of the milling cutter for processing the flexible board. The milling cutter can solve the problems of poor rigidity and poor cutting performance of the existing milling cutter for processing a flexible circuit board and is particularly suitable for processing aluminum base boards, copper base boards, the flexible boards, Teflon boards, polytetrafluoroethylene boards and other boards.

Description

technical field [0001] The invention belongs to the field of design and manufacture of milling cutters, in particular to a milling cutter for processing flexible boards and its forming process. Background technique [0002] The traditional printed circuit board is mainly composed of copper foil, glass fiber, epoxy resin and related fillers. The chip breaking design of the rhombic tooth milling cutter achieves the above-mentioned good performance. But now, printed circuit boards are gradually replaced by soft substrate materials such as aluminum substrates. This kind of board does not contain glass fiber, and is mainly composed of copper foil, insulating materials, and aluminum board. The processed board is relatively soft. If you still use it before PCB processing The chip breaker and ordinary 2-edge flat-bottom milling cutter are not easy to form chip breaking during machining and are more likely to adhere to the cutting edge to form built-up chips and rapidly deteriorate ...

Claims

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Application Information

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IPC IPC(8): B23C5/10B23P15/34
Inventor 王辉
Owner ZHEJIANG DEWEI CEMENTED CARBIDE MFG CO LTD
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