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Negative-type milling blade

A blade and milling technology, which is applied in the field of indexable negative milling blades, can solve problems such as friction and scratches on the support surface, affecting positioning accuracy, and accumulation of small chips, so as to achieve high economy and avoid the effect of not brisk cutting

Active Publication Date: 2015-03-25
XIAMEN GOLDEN EGRET SPECIAL ALLOY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

1. The disadvantages of the groove structure of the closed chip breaking groove pattern are: (1) the closed chip breaking groove is easy to cause the chip flow in the groove is not smooth enough; (2) the small space in the groove is easy to form small chips in the chip holding Tank accumulation
2. The disadvantages of using a groove structure with a stepped section between the cutting edge surface and the adjacent surface are: (1) The stepped section structure causes the cutting edge to remove more cemented carbide material, which will reduce the overall strength of the cutting edge; (2) The support surface of this structural design is lower than the cutting edge, and chips will pass through the surface of the positioning surface, which is prone to friction and scratches on the support surface, which affects the positioning accuracy

Method used

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Embodiment

[0036] see Figure 1 to Figure 9As shown, a negative milling insert of the present invention includes a insert body 1; the insert body 1 has upper and lower surfaces parallel to each other, and a quadrilateral formed by an outer peripheral surface (i.e. a side surface), and the angle formed by the intersection of the upper and lower surfaces with the outer peripheral surface It is a right angle (i.e. the blade body of the 0° rear angle); the blade body 1 is provided with a through hole 16 vertically passing through the upper and lower surfaces, and the bosses for clamping and positioning are evenly distributed around the through hole 16; the blade body The upper and lower surfaces of 1 respectively form the rake face, and the side faces form the flank face, and the intersecting ridges of the rake face and the flank face form a cutting edge, and the cutting edge includes a main cutting edge on a side of a quadrilateral 2 and the wiper edge 4 at the corner of the quadrilateral, ...

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PUM

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Abstract

The invention discloses a negative-type milling blade comprising a blade body, wherein the blade body has an upper surface, a lower surface and a quadrangular peripheral surface and is also provided with a through hole and bosses around the through hole, and a main cutting edge and a smoothing edge are alternately arranged on the peripheral surface in sequence; the main cutting edge has a concave structure and gradually tilts close to opposite surfaces of the upper and lower surfaces from two ends respectively, and a non-tilting smooth middle part of the main cutting edge is formed at a position which is 1 / 6-1 / 3 of the length of the edge on the main cutting edge; and the front tool face of the non-tilting smooth middle part of the main cutting edge of the negative-type blade body is connected to the through hole perpendicular to the upper and lower surfaces by extending at a positive angle gently, and an open scrap accommodating groove leading to the through hole is formed at the bosses. According to the negative-type milling blade disclosed by the invention, by designing of the concave structure of the main cutting edge of the cutting blade and combining the design of a special opening structure groove at a bearing surface chip breaker groove of the blade, cutting force distribution and cutting flowing can be optimized, processing of self breaking scraps can be performed, and the processability and stability of a cutter are improved.

Description

technical field [0001] The invention relates to the field of metal cutting tools, in particular to an indexable negative milling insert for performing plane milling on processed materials. Background technique [0002] In the face milling process, the cutting tool repeatedly performs intermittent machining in the process of cutting in and out. Every time the main cutting edge cuts into the processed material, it will be subjected to a huge impact load, so the structure design of the main cutting edge is reasonable. Sex will have a huge impact on tool cutting performance. [0003] In the prior art, there are three structural forms of the main cutting edge of the indexable insert for face milling: one is that the main cutting edge is designed as a straight line segment and lies parallel to the upper and lower surfaces of the cutting insert; the other is that the main cutting edge It is designed as a straight line section but not parallel to the upper and lower surfaces of the...

Claims

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Application Information

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IPC IPC(8): B23C5/02
CPCB23C5/02B23C2200/326
Inventor 林凤添张冰冰邹伶俐李东进
Owner XIAMEN GOLDEN EGRET SPECIAL ALLOY
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