CN105458842B

CN105458842B - A kind of method for solving the small tipping of small sword footpath alloy knife cutting edge

Info

Publication number: CN105458842B
Application number: CN201510839133.2A
Authority: CN
Inventors: 刘波
Original assignee: Guizhou Southwest Tool Group Co Ltd
Current assignee: Guizhou Southwest Tool Group Co Ltd
Priority date: 2015-11-27
Filing date: 2015-11-27
Publication date: 2017-10-17
Anticipated expiration: 2035-11-27
Also published as: CN105458842A

Abstract

The invention discloses a kind of method for solving the small tipping of small sword footpath alloy knife cutting edge, in grinding, the cutting edge of small sword footpath alloy knife cutter is rotated backward relative to emery wheel, by the grinding and feeding for adjusting cutting edge front and rear knife face, make the feed rate in front and rear knife face grinding that common divisor is not present, on the premise of roughness ensures, the peak and minimum point of the micro-shape of front and rear knife face roughness are misaligned, the jagged amplitude of cutting edge is small, it is to avoid jagged cutting edge occur.

Description

A kind of method for solving the small tipping of small sword footpath alloy knife cutting edge

Technical field

A kind of method of the small small tipping of sword footpath alloy knife cutting edge of solution of the present invention, belongs to cutting-tool engineering field.

Background technology

In general, for small sword footpath cutter, mainly sword footpath is less than 10mm, has micro- on cutting edge after processing Small tipping phenomenon, has influence on cutting edge linearity etc., and present lathe emery wheel has the rotary grinding of both direction, and many people make Used time is the direction of rotation given tacit consent to by lathe mostly, and grinding, which is not observed, causes the reason for cutting edge is bad, is just difficult to ensure that knife Has the quality assurance of cutting edge, the cutting edge of grinding out causes cutting edge line to appear to be jagged, surface by small tipping phenomenon Roughness is bad, and after figure layer jagged cutting edge can be made easily to wear and tear, cutter life reduction, so existing Small sword footpath cutter machining method is still not perfect enough.

The content of the invention

The present invention goal of the invention be：A kind of method for solving the small tipping of small sword footpath alloy knife cutting edge is provided, inverse mill with In two kinds of grinding methods of down grinding, inverse mill can guarantee that cutting edge roundness quality, linearity more preferably, particularly to machined surface requirement compared with High product, it can also be ensured that after cutting edge linearity, has the uniform cutting edge line of higher quality, cutting edge straight line after passivation Coating layer thickness can evenly, in working angles reduce cutting edge zigzag salient point coating and first wear and tear after the cutting tool dulling spent, this Sample cutter life is relatively longer more stable, and the interchangeability of cutter quality obtains higher guarantee, overcomes the deficiencies in the prior art.

What the present invention was realized in：A kind of method for solving the small tipping of small sword footpath alloy knife cutting edge, will in grinding The cutting edge of small sword footpath alloy knife cutter is rotated backward relative to emery wheel, by adjusting the grinding and feeding of cutting edge front and rear knife face, before making Afterwards knife face grinding in feed rate be not present common divisor, roughness ensure on the premise of, front and rear knife face roughness it is microcosmic The peak of shape and minimum point are misaligned, and the jagged amplitude of cutting edge is small, it is to avoid jagged cutting edge occur.

Compared to the prior art, the present invention can guarantee that cutting edge roundness quality to the present invention using the method for inverse mill, and linearity is more It is good, higher product particularly is required to machined surface, after cutting edge linearity is ensured, had after passivation more high-quality Coating layer thickness evenly, can reduce cutting edge after measuring uniform cutting edge line, the good cutting tool dulling of cutting edge linearity in working angles Zigzag salient point coating first weares and teares, and such cutter life is relatively longer more stable, and the interchangeability of cutter quality obtains higher guarantor Card.

Brief description of the drawings

Fig. 1 is the product metallograph that existing method is processed；

The product metallograph that Fig. 2 processes for the present invention.

Embodiment

The present invention is described in further detail with reference to the accompanying drawings and examples, but not as the limit to the present invention System.

Embodiments of the invention：A kind of method for solving the small tipping of small sword footpath alloy knife cutting edge, in grinding, by small sword The cutting edge of footpath alloy knife cutter is rotated backward relative to emery wheel, by adjusting the grinding and feeding of cutting edge front and rear knife face, makes front and rear knife Common divisor is not present in feed rate in the grinding of face, on the premise of roughness ensures, the micro-shape of front and rear knife face roughness Peak and minimum point it is misaligned, the jagged amplitude of cutting edge is small, it is to avoid jagged cutting edge occur.

Change emery wheel direction of rotation, change cutting edge Impact direction in grinding process：

As shown in figure 1, cutting edge easily weares and teares during use, surface roughness is processed bad.

As described in Figure 2, the cutting edge after the examination of debugging cutting edge, cutting edge linearity is good, and machined surface quality is high, by the figure of figure layer Layer protection can be more preferable, makes life-span relative increase.

The principal element of all land mouthful linearitys of influence at present has the roughness and all tooth rake faces of all relief angles of tooth first Roughness and all lands mouth whether have small tipping, influenceing the principal element of the cutting edge linearity of end tooth has the relief angle of end tooth first Whether there is small tipping with end tooth rake face and cutting edge, to improve cutting edge roundness linearity, it is necessary to start with terms of two：

First type, grinding direction and the traveling side during tool grinding of adjustment emery wheel are cut by observing cutting edge roundness To the small tipping that solution cutting edge occurs；Secondly by the grinding and feeding of adjustment cutting edge front and rear knife face, make in front and rear knife face grinding Feed rate be not present common divisor, roughness ensure on the premise of, the peak of the micro-shape of front and rear knife face roughness It is misaligned with minimum point, solve the jagged amplitude of cutting edge bigger than normal.

Under grinding environment, emery wheel inherently reaches grinding purpose with cutter by extruding stress.In the environment of down grinding Under, a component in the grinding force between emery wheel and cutter concentrates stress to cause small tipping cutting edge roundness, and of the invention Inverse mill during, because changing the direction of this component so that this component disperses in cutter body structure, just overcomes knife Have cutting edge and small tipping occur.

And the problem of be related to roughness on front and rear knife face, corrugated table present on roughness originally knife face Face, supports when the highest of wavy surfaces and is coincided together with minimum point, is easy for causing jagged cutting edge, adjusts front and rear knife face After the frequency of peak and minimum point is misaligned so that the difference of the microcosmic upper zigzag peak of cutting edge roundness and minimum point subtracts Small, macroscopically linearity is improved, so as to overcome influence of the front and rear knife face roughness to cutting edge linearity.

Down grinding and the operation of inverse mill, are to be determined according to emery wheel direction of rotation and cutter direct of travel, as long as ensureing emery wheel It is to be advanced since cutting edge roundness in grinding process（Inverse mill）.Just it is avoided that small tipping, the grinding of front and rear knife face occurs in cutting edge It can not be fed to identical or into the feeding of multiple, as long as ensureing the feed rate least common multiple of front and rear knife face as far as possible Greatly, suitably adjusted on the premise of roughness reaches requirement, with regard to zigzag caused by roughness can be reduced to cutting edge linearity Influence.For example：Rake face grinding and feeding is 80, then rear knife face should not give the feeding of 80,40,160 equimultiple relations.

Claims

1. a kind of method for solving the small tipping of small sword footpath alloy knife cutting edge, it is characterised in that：In grinding, by small sword footpath alloy The cutting edge of knife cutter is rotated backward relative to emery wheel, by adjusting the grinding and feeding of cutting edge front and rear knife face, is ground front and rear knife face In feed rate be not present common divisor, roughness ensure on the premise of, the highest of the micro-shape of front and rear knife face roughness Point is misaligned with minimum point, and the jagged amplitude of cutting edge is small, it is to avoid jagged cutting edge occur.