Unlock instant, AI-driven research and patent intelligence for your innovation.

Design method of dynamic vibration damping boring bar

A technology of dynamic vibration reduction and design method, which is applied in the field of metal cutting and processing, can solve the problems of not considering the interaction of cutting system and the stability of chatter vibration can not be optimal, so as to improve the precision of parts and processing efficiency, and improve the stability of chatter vibration , The effect of optimizing the length of the vibrating core

Inactive Publication Date: 2018-10-19
SOUTHEAST UNIV
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The traditional design method of dynamic damping boring bar regards the cutting force as a simple harmonic force, and the cutting process is an open-loop control system, which does not consider the interaction between the vibration motion of the cutting system and the undulating surface generated by the workpiece rotation. Vibration-absorbing boring bar adopts traditional design method and chatter stability cannot be optimal

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
  • Design method of dynamic vibration damping boring bar
  • Design method of dynamic vibration damping boring bar
  • Design method of dynamic vibration damping boring bar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] Below in conjunction with accompanying drawing, the present invention is described in detail:

[0029] Such as figure 1 As shown, the present invention relates to a design method of a dynamic damping boring bar, which includes a cutter head 1, a cutter head adapter end cover 2, a rubber ring 3, a vibrating core 4, a cooling water pipe 5, a damping Oil 6, sealing O-ring 7, end cap 8, boring bar body 9, the cutter head is arranged at the front end of the boring bar body, there is a cavity inside the boring bar body, the two ends of the cavity are end caps, and the inside of the end cap is provided with Rubber rings, the vibrating core is arranged between the rubber rings, the damping oil is arranged inside the vibrating core, and a cooling water pipe is arranged inside the vibrating core to communicate with the water source.

[0030] combine figure 1 and figure 2 , the boring bar can be simplified into a two-degree-of-freedom system, wherein the vibrating core 4, the ...

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 provides a parameter design method of a built-in vibration absorber of a dynamic vibration damping boring bar, wherein the boring bar is internally provided with a cavity, a dynamic vibration absorber system which is composed of a vibration core, a rubber ring and damping oil is arranged inside the cavity. The technical scheme of the invention is as follows: (1) a theoretical model and a dynamic equation of a dynamic cutting process are established by considering the generation mechanism of regenerative chatter; (2) the relationship between the limit axial cutting width and the parameters of the dynamic damping boring bar under the critical stable state is calculated; (3) the expression of the optimum frequency ratio and the optimum damping of the dynamic damping boring bar is calculated to optimize the stiffness and damping of the vibration absorber built in the boring bar with the objective of maximizing the ultimate axial cutting width; (4) numerical calculation is carried out to optimize the vibration core length of the built-in vibration absorber. Reasonable selection of the parameters of the dynamic vibration absorber according to the calculation result can effectively suppress the chatter in the cutting process and improve the chatter stability of the cutting system.

Description

technical field [0001] The invention relates to a design method of a dynamic damping boring bar for hole processing, which can suppress chattering phenomena in cutting processing, and belongs to the technical field of metal cutting processing. Background technique [0002] Deep hole processing is a difficult problem in mechanical processing. The large overhang of the tool leads to low rigidity, which is prone to cutting chatter, affects the precision and surface roughness of the machined parts, increases the wear of the cutting edge, and reduces the processing efficiency. [0003] The use of dynamic damping boring bar is an effective technical way to solve the chatter in deep hole machining. The vibration reduction effect of dynamic damping boring bar mainly depends on the design of the built-in vibration absorber. [0004] The traditional design method of dynamic damping boring bar regards the cutting force as a simple harmonic force, and the cutting process is an open-loop...

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): G06F17/50
CPCG06F30/17G06F30/20
Inventor 孙蓓蓓何苗李烈
Owner SOUTHEAST UNIV