Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Calculation method for cutting track of ultrasonic elliptical vibration cutting technology

A technology of elliptical vibration and calculation method, which is applied in the calculation of cutting trajectory of ultrasonic elliptical vibration cutting technology, and in the field of calculation of cutting trajectory, which can solve the problems of increasing the surface shape error and overcut of the processed surface

Active Publication Date: 2020-11-03
HARBIN INST OF TECH
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that if the existing ultrasonic elliptical vibration cutting track moves according to the curve to be processed in the traditional ultra-precision machining, there will be overcut phenomenon, which will increase the surface shape error of the machined surface

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
  • Calculation method for cutting track of ultrasonic elliptical vibration cutting technology
  • Calculation method for cutting track of ultrasonic elliptical vibration cutting technology
  • Calculation method for cutting track of ultrasonic elliptical vibration cutting technology

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0079] Specific implementation mode one: combine Figure 1 to Figure 2 Describe this embodiment, a kind of method for calculating the cutting trajectory of ultrasonic elliptical vibration cutting technology in this embodiment, it comprises the following steps:

[0080] Step 1: Discrete the curve to be processed, and obtain a discrete point sequence Q whose distance between two adjacent points is not greater than 0.5 μm i (y i ,z i )(i=1,2,…,n)1, and then from the discrete point sequence Q to be processed i (y i ,z i )(i=1,2,...,n)(1) extract two adjacent points in turn and calculate the slope k of the formed micro-line segment 2 i , and then get the slope sequence k i (i=1,2,…,n), where k n =k n-1 , the formula for calculating the slope is

[0081]

[0082] In the formula, y i 、y i+1 ,z i and z i+1 Q respectively i and Q i+1 The y-coordinate and z-coordinate of ;

[0083] Step 2: Create a sequence of discrete points Q i (y i ,z i )(i=1,2,...,n)1 correspon...

specific Embodiment approach 2

[0103] Specific implementation mode two: combination Figure 3 to Figure 4 To illustrate this embodiment, the calculation method of the motion trajectory 3 of the ultrasonic elliptical vibration cutting technology in step 2 of this embodiment is as follows:

[0104]Step 21: Use the method of homogeneous coordinate transformation to study the motion trajectory expression of the ultrasonic elliptical vibration cutting technology corresponding to the oblique straight line from a new perspective. The main body of the ultrasonic elliptical vibration cutting device is composed of a piezoelectric ceramic sheet group, a horn and a cutter 11. Under the electric excitation of a certain frequency, the piezoelectric ceramic sheet group produces a displacement output with the same frequency as the electric excitation, and the displacement output is amplified by the horn to make the cutter 11 move along a certain path. When the frequency of electrical excitation is the natural frequency of...

specific Embodiment approach 3

[0129] Specific implementation mode three: combination image 3 with Figure 4 To illustrate this embodiment, the motion trajectory method of the ultrasonic elliptical vibration cutting technology proposed in this embodiment is applicable to different types and forms of ultrasonic elliptical vibration cutting devices. The ultrasonic elliptical vibration cutting device described in step 1 is a non-resonance type or a resonance type, and the resonance type is a longitudinal vibration-flexural vibration composite form or a bending vibration-flexural vibration composite form or a longitudinal vibration-longitudinal vibration composite form. It is also applicable to other forms of the non-resonant type and the resonant type, such as bending vibration-bending vibration combination, longitudinal vibration-longitudinal vibration combination, etc. Although the ultrasonic elliptical vibration cutting devices are not the same, their internal movement track synthesis principle is the sam...

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 discloses a calculation method for a cutting track of an ultrasonic elliptical vibration cutting technology, and relates to a calculation method for a cutting track. The problem that ifan existing ultrasonic elliptical vibration cutting track moves according to a to-be-machined curve of traditional ultra-precision machining, an over-cutting phenomenon exists, and then the surface shape error of a machined surface is increased is solved. The invention provides a calculation method for a cutting track of an ultrasonic elliptical vibration cutting technology, which comprises the following steps of: firstly, calculating a tangent point corresponding to a tangent line parallel to a corresponding micro straight line segment to be processed on a motion track of the ultrasonic elliptical vibration cutting technology in each vibration period; and enabling the motion trail to be tangent to the micro-straight-line segment to be machined through coordinate translation transformation, calculating and obtaining a new motion trail of the ultrasonic elliptical vibration cutting technology according to the translated elliptical center point sequence, wherein the motion trail is the cutting trail of the ultrasonic elliptical vibration cutting technology. The method is used for calculating the cutting track of the ultrasonic elliptical vibration cutting technology.

Description

technical field [0001] The invention relates to a calculation method of a cutting track, in particular to a calculation method for a cutting track of an ultrasonic elliptical vibration cutting technology, and belongs to the technical field of ultra-precision cutting. Background technique [0002] Ultrasonic elliptical vibration cutting technology is a cutting technology with excellent processing performance. This technology can effectively reduce the processing effects of commonly used ultra-precision cutting processes such as turning and planing. For example, it can significantly reduce cutting force, reduce cutting heat, and effectively extend the tool service life, improve the critical depth of cut of plastic-to-brittle transition of brittle materials, etc. The decisive factor for the above-mentioned excellent machining performance of the ultrasonic elliptical vibration cutting technology is that the tool tip moves on an elliptical trajectory in the cutting plane, which i...

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): G05B19/19
CPCG05B19/19G05B2219/35349
Inventor 王爱博赵清亮郭兵
Owner HARBIN INST OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com