Method and device for determining contact condition of circular cutting edge tool based on cutting force

A technology to determine the method and cutting force, which is applied in the direction of manufacturing tools, metal processing machinery parts, measuring/indicating equipment, etc., and can solve problems such as the inability to establish normal stress models and research problems

Active Publication Date: 2020-09-08
WUHAN UNIV OF TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, it is impossible to establish a suitable normal stress model in the case of circular contact, an

Method used

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  • Method and device for determining contact condition of circular cutting edge tool based on cutting force
  • Method and device for determining contact condition of circular cutting edge tool based on cutting force
  • Method and device for determining contact condition of circular cutting edge tool based on cutting force

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[0099] The method for determining the contact condition of a round edge tool based on the cutting force according to the present invention will be described in detail below with reference to the accompanying drawings.

[0100]

[0101] Such as figure 1 As shown, the method for determining the contact condition of a round edge tool based on cutting force provided in this embodiment includes the following steps:

[0102] Step 1. Establish a geometric model of the dead zone in the cutting process of a round edge tool, and describe the contact behavior and contact nodes at the round edge based on material deformation;

[0103] Step 1-1. In the cutting process of the round edge tool, describe the complete plowing process and establish a geometric model of the dead zone; during the metal cutting process, the relative speed between the part at the round edge of the tool and the tool is 0 The workpiece material is called the dead zone structure. The specific dead zone structure is as figur...

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PUM

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Abstract

The invention provides a method and a device for determining the contact condition of a circular cutting edge tool based on cutting force. The method comprises the following steps of step 1, establishing a geometric model of a dead zone in the cutting process of the circular cutting edge tool, describing contact behavior and contact nodes at a circular cutting edge; step 1-1, in the cutting process of the circular cutting edge tool, describing the complete plowing process and establishing the geometric model of the dead zone; Steps 1-2, determining the positions of the key contact nodes S1 andS3; steps 1-3, determining the contact characteristics at the contact node S2; Step 2, establishing a cutting force model based on the contact behavior; step 2-1, establishing a contact stress distribution model based on contact nodes; steps 2-2, establishing a cutting force model based on contact stress; step 3, determining unknown parameters of the cutting model based on the cutting force data;and step 3, determining unknown parameters of the cutting model based on the cutting force data. The method and the device solve the problem that the cutting force model ignores the cutting edge radius, and can accurately and effectively determine the real contact condition of the circular cutting edge tool.

Description

technical field [0001] The invention belongs to the field of metal high-precision machining, and in particular relates to a method and a device for determining the contact condition of a circular cutting edge tool based on cutting force. [0002] technical background [0003] In the field of high-precision machining and difficult-to-machine material processing, excessive cutting force and cutting heat lead to excessive wear of the tool, which reduces the life of the tool and damages the surface quality of the workpiece. The introduction of the circular edge of the tool can effectively reduce the wear of the tool, and since scholars proposed the plowing effect in the machining process in 1960, the mechanical and thermal modeling and simulation of the cutting process considering the circular edge has been a hot and difficult point in cutting research. [0004] Some scholars are committed to defining the shearing and plowing of workpieces from the perspective of material deforma...

Claims

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Application Information

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IPC IPC(8): B23Q17/09
CPCB23Q17/0952
Inventor 庄可佳张伟伟翁剑
Owner WUHAN UNIV OF TECH
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