Title:
METHOD FOR PREDICTING SERVICE LIFE OF MOLD CLAMPING BALL SCREW MECHANISM OF TOGGLE-TYPE MOLD CLAMPING APPARATUS, AND TOGGLE-TYPE MOLD CLAMPING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2016/059767
Kind Code:
A1
Abstract:
[Problem] To provide a method for predicting the service life of a ball screw mechanism, said method requiring little calculation for a relatively accurate prediction, thus allowing a controller of an injection molding machine to easily predict said service life. [Solution] The operable time (Lt) of a mold clamping ball screw mechanism (24) which drives a toggle mechanism (14) of a toggle-type mold clamping apparatus (2) is predicted. Simplifying the theoretical formula on the basis of a theoretical formula expressing the service life of the ball screw mechanism, the operable time (Lt) is given as a function of one variable using the mold clamping force (KS) as the variable. The service life of the mold clamping ball screw mechanism (24) is predicted on the basis of the function of one variable. In a preferred embodiment, the function of one variable is constructed from the following exponential function: Lt = α*KSβ, where α and β are constants.
Inventors:
AMAUCHI YASUHIRO (JP)
Application Number:
PCT/JP2015/005049
Publication Date:
April 21, 2016
Filing Date:
October 05, 2015
Export Citation:
Assignee:
JAPAN STEEL WORKS LTD (JP)
International Classes:
B29C45/66; B22D17/26
Foreign References:
| JPH0839639A | 1996-02-13 | |||
| JPH05187965A | 1993-07-27 |
Attorney, Agent or Firm:
SUGITANI, Hiromichi et al. (JP)
Hiromichi Sugitani (JP)
Hiromichi Sugitani (JP)
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