Damping cutter bar for turning coarse-pitch threads

A large pitch and thread technology, applied in the direction of thread cutting tools, metal processing equipment, tangent devices, etc., can solve the problems affecting the machining accuracy of the surface quality of workpieces, achieve the suppression of cutting chatter, facilitate manufacturing, processing and installation, and simple structure Effect

Inactive Publication Date: 2019-03-15
HARBIN UNIV OF SCI & TECH
View PDF9 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a vibration-damping tool holder to improve the problem that the cut

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Damping cutter bar for turning coarse-pitch threads
  • Damping cutter bar for turning coarse-pitch threads

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] specific implementation plan

[0022] The cutting chatter is often accompanied by the occurrence of cutting chatter, which will seriously affect the surface morphology and cutting precision of the workpiece. Especially in the process of turning large-pitch threads, due to the large cutting force generated by high-feed cutting, cutting chatter is also large, which seriously affects the surface quality of large-pitch thread parts. Aiming at the harm caused by this kind of vibration, scholars at home and abroad have done a lot of research on the mechanism of vibration generation and vibration suppression. Vibration suppression methods are mainly divided into three categories, active control, passive control and semi-active control. Among them, active control to suppress vibration has relatively high requirements on detection accuracy and control system, and often requires additional components such as power supply, sensors, and actuators, and has a complex structure; pass...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a damping cutter bar for turning coarse-pitch threads, and belongs to the field of machining. The damping cutter bar comprises a cutter bar shaft, a cutter bar shaft sleeve, an exciting coil, an upper permanent magnet, a lower permanent magnet, a piezoelectric ceramic piece, an end cover, a magnetorheological fluid and the like, wherein the exciting coil is wound on the cutter bar shaft, a coil lead of the exciting coil is connected with the piezoelectric ceramic piece, the magnetorheological fluid is injected into an annular cavity formed by the upper permanent magnetand the lower permanent magnet, and the piezoelectric ceramic piece is arranged in an annular cavity formed by the upper permanent magnet and the cutter bar shaft sleeve. According to the damping cutter bar, vibration can be suppressed when the coarse-pitch threads are turned, ever-changing current is generated by the piezoelectric ceramic piece due to cutting vibration and is transferred to theexciting coil through the coil lead, therefore, an ever-changing magnetic field can be generated by the exciting coil, so that the rigidity and damping of the magnetorheological fluid are quickly changed, the vibration reduction function is realized, and the surface quality of a to-be-processed workpiece is increased.

Description

technical field [0001] The invention relates to the field of mechanical processing, in particular to a vibration-damping cutter bar for turning large-pitch threads. Background technique [0002] During the metal cutting process, cutting chatter often occurs, and the cutting chatter will seriously affect the surface morphology and cutting precision of the workpiece. Especially in the process of turning large-pitch threads, due to the large cutting force generated by high-feed cutting, cutting chatter is also large, which seriously affects the surface quality of large-pitch thread parts. Aiming at the harm caused by this kind of vibration, scholars at home and abroad have done a lot of research on the mechanism of vibration generation and vibration suppression. Vibration suppression methods are mainly divided into three categories, active control, passive control and semi-active control. Among them, active control to suppress vibration has relatively high requirements on det...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B23G5/00B23G1/00
CPCB23G1/00B23G5/00
Inventor 李哲周亚栋李景帅
Owner HARBIN UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap