Hits:

Indexed by:Journal Papers

Date of Publication:2014-01-01

Journal:Sensors & Transducers

Volume:177

Issue:8

Page Number:113-121

Key Words:Chain-type magazine and ATC, Reliability, Performance test system, PSD, Positioning error

Abstract:Tool magazine and ATC (Automatic Tool Changer) are crucial functional components and the weak
links of the fault locations of the CNC machining center. So the study on reliability of magazine and ATC is
important to improve the reliability of machining center. The failure of magazine and ATC is a gradual progress
from quantitative to qualitative, with the changes of some performance parameters (such as vibration, noise,
position accuracy, etc.). To provide a test basis for the reliability growth technology based on performance
parameters changing, a set of reliability oriented performance test system of chain-type magazine and ATC is
developed. The testing of performance parameters such as the kinematical characteristic of manipulator, the
magazine positioning error, vibration on the tool oriented part and noise is achieved. Then the developed
reliability oriented performance test system of chain-type magazine and ATC is used to estimate the
performance of chain-type magazine and ATC produced by Dalian Golden CNC Group Corp. The experimental
data proves its feasibility. Under reasonable test time interval and performance parameters changing thresholds,
this system will alert the operators to do some repairing in time when performance parameters degrade badly to
prevent the failures effectively so as to avoid or decrease losses, then the reliability of magazine and ATC can be
improved.