Ball screw grinding chatter stability limit graph determining method

A technology for grinding chatter and ball screw, which is applied in grinding/polishing equipment, grinding machines, metal processing equipment, etc., and can solve problems such as difficulty in accurately determining the parameters of grinding dynamics models
CN101934487AInactive Publication Date: 2011-01-05UNIV OF SHANGHAI FOR SCI & TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
UNIV OF SHANGHAI FOR SCI & TECH
Publication Date
2011-01-05
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention relates to a ball screw grinding chatter stability limit graph determining method, comprising the steps: 1) establishing a dynamics model of a grinding process via an experimental method; 2) according to the stability criterion of cybernetics, determining a grinding chatter stability limit graph; and 3) according to the grinding chatter stability limit graph, determining the parameters of the grinding technique for ensuring the grinding stability. The invention mainly aims at solving the chatter inhibition problem of a numerical control thread grinder in the grinding process of a ball screw, adopts the experimental design method to accurately identify the parameters of the grinding dynamics model, determines the grinding chatter stability limit graph according to the parameters, and provides the parameters of the grinding technique to ensure the grinding stability, thereby effectively solving the chatter inhibition problem in grinding process. The curve can be used to determine the parameters of the grinding technique, namely the abrasion wheel main shaft speed n and the grinding depth h to avoid flutter, thus the invention can improve the grinding quality and efficiency of the ball screw.
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Description

technical field

[0001] The invention relates to a method for analyzing the chatter stability of ball screw rod grinding, in particular to a method for accurately judging the chatter stability of ball screw rod grinding by using a limit diagram. Background technique

[0002] Grinding is the last process in the processing of ball screw. The flutter phenomenon caused by unstable grinding during the grinding process is one of the important factors affecting the surface quality of the workpiece. Generally, there are two ways to suppress the grinding chatter phenomenon. One is to measure the signals (such as acoustic emission signals, etc.) when chatter occurs and when no chatter occurs during the grinding process of the ball screw. The pattern recognition theory establishes the discriminant formula of the grinding chatter phenomenon, and controls the grinding process parameters according to the discriminant formula to avoid the chatter phenomenon; the other is to establish a grin...

Claims

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