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Turning blade variable in chamfered edge width and angle

A chamfering and turning technology, which is applied to cutting blades, turning equipment, manufacturing tools, etc., can solve the problems of processing efficiency, safety, poor surface quality of workpieces, and easy entanglement of chips on tools, workpieces or machine tools. Influence, reduce radial force, reduce the effect of tool stress concentration

Inactive Publication Date: 2017-01-11
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the feed rate is 1 / 2 of the width of the chamfer, it will form long and thin winding chips, which are easy to wrap around the tool, workpiece or machine tool, and must be stopped for cleaning. This processing efficiency, safety, The surface quality of the workpiece is not good

Method used

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  • Turning blade variable in chamfered edge width and angle
  • Turning blade variable in chamfered edge width and angle
  • Turning blade variable in chamfered edge width and angle

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0022] Specific implementation mode one: as Figure 1~Figure 6 As shown, a turning insert with variable chamfer width and angle, the turning insert is composed of a cutter body I and a tip insert II, and the middle part of the cutter body I is provided with a tool holder mounting hole 7 (knife The rod mounting hole 7 is chamfered to facilitate installation), the horizontal section of the cutter body I is polygonal, and any corner of the upper surface of the cutter body I is provided with an embedding groove that matches the blade tip insert II, so The blade tip insert II is tightly embedded in the embedding groove of the cutter body I, and the side surfaces of the turning insert include side one 3, side two 3', smoothing surface one 4, smoothing surface two 4' and the curved surface 5 of the knife tip. The cutting edge of the cutting edge insert II is provided with a cutting edge cutting section, and the cutting edge cutting section is processed with a variable chamfer surface...

specific Embodiment approach 2

[0032] Specific implementation mode two: as figure 1 and figure 2 As shown, the turning insert with variable chamfer width and angle described in the first embodiment, the first smoothing surface 4 or the second smoothing surface 4' is parallel to the feeding direction of the turning insert.

specific Embodiment approach 3

[0033] Specific implementation mode three: as figure 1 and figure 2 As shown, the turning insert with variable chamfer width and angle described in the first specific embodiment, the width of the variable chamfer surface ranges from 0.1 to 0.3mm, and the chamfer angle of the variable chamfer surface takes The value range is -5°~-25°. The effect is: If the chamfer width and chamfer angle are too large, the cutting force generated during the cutting process will be too large, and the vibration generated during machining will also increase, which will affect the quality of the processed surface. If the value is too small, the effect of chamfering is not obvious.

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Abstract

The invention discloses a turning blade variable in chamfered edge width and angle and belongs to the technical field of turning cutters. A tool nose cutting section is machined with a variable chamfered edge face, the lower edge line of the variable chamfered edge is a cutting blade, an included angle is formed by a side face I and a sleeking face I and by a side face II and a sleeking face II, and circular-arc transition face connection is adopted between the sleeking face I and a tool nose curved surface and the side face I and between the sleeking face II and the tool nose curved surface and the side face II. The cutting blade consist of a segment I, a segment II and a circular arc line I, the upper edge line of the variable chamfered edge face consists of a segment III, a segment IV and a circular arc line II, the central line of the circular arc line intersects with the circular arc line I and the circular arc line II respectively a point I and a point II, the upper edge of the tool nose curved surface coincides with the circular arc line I, the upper edge of the sleeking face I coincides with the segment II, and the upper edge of the sleeking face II and the segment I. The turning blade can make crater abrasion offset by changing the chamfered edge width, and the influence on cutting machining of abrasion can be reduced. The turning blade is suitable for finish turning.

Description

technical field [0001] The invention relates to a turning insert, which belongs to the technical field of turning tools. Background technique [0002] Chamfering, also known as negative chamfering, is a facet made on the tool along the main cutting edge whose rake angle is narrower than the main cutting rake angle. Its function is to strengthen the cutting edge and improve the strength of the tip. Most of the inserts for conventional cemented carbide or processing hard materials are chamfered. There are two parameters of chamfer width and chamfer angle. [0003] During finishing machining, the increase of the chamfer width will lead to the increase of cutting force, and the excessive width of the chamfer may cause insufficient rigidity of the machine tool, and the chamfer width has little effect on the temperature of the rake face. The ratio of chamfer width to feed rate is an indicator that affects the chip breaking ability of the tool. If the feed rate is 1 / 2 of the wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B27/18
CPCB23B27/18B23B2200/204
Inventor 陈涛王道源刘献礼李素燕
Owner HARBIN UNIV OF SCI & TECH
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