A variable curvature involute edge type indexable end mill with two-stage chip guide

A chip guide and variable curvature technology, which is applied to milling cutters, milling cutting inserts, milling machine equipment, etc., can solve the problems of difficult setting of chip guides, easy generation of built-up edge, and low cutting efficiency, so as to improve the quality of the machined surface And tool life, improve tool life and processing efficiency and surface quality, the effect of high processing efficiency

Active Publication Date: 2020-12-11
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a variable curvature involute edge type indexable end mill with two-stage chip guides to solve the problem of traditional indexable ball heads when processing titanium alloy workpieces with deep cavity profiles. End mills are prone to built-up edge because it is not easy to set chip guides; and the effective cutting edge is short, with low cutting efficiency and low machining accuracy.

Method used

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  • A variable curvature involute edge type indexable end mill with two-stage chip guide
  • A variable curvature involute edge type indexable end mill with two-stage chip guide
  • A variable curvature involute edge type indexable end mill with two-stage chip guide

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specific Embodiment approach 1

[0022] Specific implementation mode one: as Figure 1-Figure 4 As shown, this embodiment discloses a variable curvature involute edge indexable end mill with two-stage chip guides, including a cutter body 1 and a milling insert 2, and the milling insert 2 includes a first rear Cutter face 3, second flank face 4 and rake face 5; The center of described cutter body 1 and milling insert 2 is all provided with threaded hole, and cutter body 1 and milling insert 2 are threadedly connected with described threaded hole The fastening screws are fixedly connected; the outer surface of the milling insert 2 is provided with four identical cross involute-shaped edges 6, and the rake face 5 of the milling insert 2 is provided with a secondary chip guide groove.

[0023] The first flank 3, the second flank 4 and the rake face 5 are prior art and belong to conventional designs.

specific Embodiment approach 2

[0024] Specific implementation mode two: as figure 1 , figure 2 , Figure 7 and Figure 8 As shown, this embodiment is a further description of specific embodiment 1. The projection of the front view of the milling insert 2 is a circle, and the four cross-involute-shaped edges 6 are symmetrically distributed in pairs on the milling insert. 2 on the upper and lower sides. When the cross involute type 6 edges on one side of the milling blade 2 are worn out, the adjustable milling blade 2 continues to be used.

[0025] The milling blade 2 has a diameter of 25 mm and a thickness of 6 mm, the diameter of the cutter body 1 is 25 mm, and the nominal diameters of the threaded holes of the cutter body 1 and the milling blade 2 are both 6 mm.

specific Embodiment approach 3

[0026] Specific implementation mode three: as figure 1 , figure 2 As shown, this embodiment is a further description of specific embodiment 1 or 2. The four cross involute blades 6 are distributed concentrically and staggered at the apex of the milling insert 2, and extend along the cross involute to the milling blade. at the circumference of the blade 2. Not only increases the effective cutting edge length during end milling, but also improves cutting efficiency and surface quality.

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Abstract

The invention discloses a variable-curvature involute blade type indexable end mill with two stages of chip guiding grooves, and belongs to the technical field of cutting tools. The problems that whena titanium alloy workpiece with a deep cavity profile is machined at present, a traditional indexable ball end mill is not prone to be provided with a chip guiding groove, and chips are easy to generate; and the effective cutting edge is short, the cutting efficiency is low, and the machining precision is low need to be solved. The end mill comprises a cutter body and a milling cutter blade, wherein the milling cutter blade comprises a first rear cutter surface, a second rear cutter surface and a rake surface; threaded holes are formed in the centers of the cutter body and the milling cutterblade, and the cutter body and the milling cutter blade are fixedly connected through fastening screws which are in threaded connection with the threaded holes; and four identical cross involute typeblades are arranged on the outer surface of the milling cutter blade, two stages of chip guiding grooves are formed in the rake surface of the milling cutter blade, and the two stages of chip guidinggrooves are composed of a first-stage arc-shaped chip guiding groove and a second-stage linear chip breaking groove, and the end mill is used for machining the titanium alloy workpiece with the deep cavity profile.

Description

technical field [0001] The invention belongs to the technical field of cutting tools, and in particular relates to a variable curvature involute edge type indexable end mill with two-stage chip guide grooves. Background technique [0002] In recent years, with the continuous development of my country's aerospace industry, automobile industry, and mold industry, difficult-to-machine materials such as titanium alloys have begun to appear in large quantities in the machinery manufacturing industry. For difficult-to-machine materials such as titanium alloys, the indexable ball end mill is a high-performance processing tool, but in the actual processing process, because the blade of the indexable ball end mill is not easy to set guide chip However, the thermal conductivity of titanium alloy is low during machining. Therefore, when machining workpieces such as titanium alloy, the chips have a large curl radius and are not easy to break. Chips are easy to accumulate on the surface ...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): B23C5/10
CPCB23C5/109B23C2200/08B23C2200/24
Inventor陈涛李瑞王昌红宋立星刘献礼
OwnerHARBIN UNIV OF SCI & TECH