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Combined type end mill for machining paper based honeycomb composite materials

A composite material and combined technology, used in milling cutters, metal processing equipment, manufacturing tools, etc., can solve the problems of chip bonding and high cutting temperature, and achieve the effect of reducing cutting deformation and cutting force.

Inactive Publication Date: 2018-01-23
CHENGDU AIRCRAFT INDUSTRY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the problems of chip sticking and high cutting temperature in existing milling tools for paper-based honeycomb composite materials, and provides a combined end mill with internal cooling function for numerically controlled machining of paper-based honeycomb materials. Chip removal function for cleaning and cooling of cutting inserts

Method used

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  • Combined type end mill for machining paper based honeycomb composite materials
  • Combined type end mill for machining paper based honeycomb composite materials
  • Combined type end mill for machining paper based honeycomb composite materials

Examples

Experimental program
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Effect test

Embodiment 1

[0027] like figure 1 , figure 2 As shown, a combined end mill for processing paper-based honeycomb composite materials includes a cylindrical cutter body 9 and a tool shank 1 arranged on the upper end face of the cutter body 9 and connected with the cutter body 9 as a whole, and a cutter body 9 arranged on the cutter body 9 The disc serrated cutting knife 4 on the lower end surface, the knife handle 1 and the knife body 9 are coaxially installed. The cutter body 9 is provided with no less than four groups of positioning surfaces 8 , chip flutes 3 and internal cooling holes 2 that are equally spaced along the circumferential direction. like image 3 As shown, the inner cooling hole 2 is a through hole arranged inside the tool handle 1 and the tool body 9, one end of the inner cooling hole 2 penetrates the tool handle 1, an air inlet is formed on the upper end face of the tool handle 1, and the other end penetrates The cutter body 9 communicates with the chip flute 3 to for...

Embodiment 2

[0031] On the basis of the above-mentioned embodiment, this embodiment has been improved, and the improvement is as follows: Figure 4 , the surface of the cutting insert 6 is provided with a plurality of fine-toothed cutting edges 10 forming left and right double helical grooves. like Figure 4 As shown in the partial enlarged view of the medium fine tooth cutting edge 10, the rake angle on the A / A section of the fine tooth cutting edge 10 γ 1 The angle is 7~12°, the back angle α 1 The angle is 7~12°; the rake angle on the B / B section shown γ 2 The angle is 7~12°, the back angle α 2 The angle is 7~12°. Further, the upper rake angle of the serrated cutting edge 10 γ 1 = γ 2 =7~12°, back angle α 1 =α 2=7~12°. The cutting blade 6 is detachably fixed on the positioning surface 8 by the screw 5, and is connected with the cutter body 9. When the dust-like chips adhere to the cutting edge and are difficult to remove, a new blade can be used, and the replaced blade ...

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Abstract

The invention discloses a combined type end mill for machining paper based honeycomb composite materials. The combined type end mill comprises a cylindrical cutter body, a cutter handle arranged on the upper end face of the cutter body and a disc-swatooth-shaped cutting knife arranged on the lower end face of the cutter body. Not less than four sets of positioning faces, chipping containing grooves and internal cooling holes which are distributed in the peripheral direction at equal intervals are arranged on the cutter body, cutting blades matched with the positioning faces are fixedly installed on the positioning faces, and knife edges of the cutting blades extend out of the cylindrical face of the cutter body; and the internal cooling holes are through holes formed inside the cutter handle and the cutter body and are communicated with the chipping containing grooves to form air outlets. The cutting blades are detachable blades composed of a plurality of left and right double helix groove type thin tooth cutting edges. By means of the combined type end mill, the cutting force and the cutting temperature of the paper based honeycomb composite materials are better reduced, defects such as deformation and tearing are prevented, when dust-shaped cutting chippings are bonded to the cutting edges and are difficult to remove, replacement with a new blade can be achieved for use, andadverse effects caused by the fact that the dust cutting chippings are bonded to the cutting edges are avoided.

Description

technical field [0001] The invention relates to the field of cutting tools, in particular to a combined end mill for processing paper-based honeycomb composite materials. Background technique [0002] Honeycomb sandwich structure composite materials are more and more widely used in aerospace, automobile and other fields because of their high specific strength, good impact resistance, vibration reduction, microwave transmission, and strong designability. Among them, Nomex honeycomb core material is made of polyaramid paper through a series of complex processes such as printing, laminating, pressing, stretching, dipping, drying, curing, etc. As a sandwich structure, it is widely used in aircraft flaps and ailerons. , wall panels, rotors, tailstocks and other components. However, the processing of paper-based honeycomb materials is easy to deform, resulting in quality defects such as burrs and delamination, and a large amount of aramid paper fiber debris and dust are generated...

Claims

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Application Information

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IPC IPC(8): B23C5/28B23C5/20
Inventor 吴强朱中奇张川胡金辉廖双权胡选妮邬建军刘伟军
Owner CHENGDU AIRCRAFT INDUSTRY GROUP
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