Value Analysis On Dia Cutting Machine On The Basis Of Machinery Reliability

Automatic die cutting machine is one of the important devices for dealing with the surface in the packing and printing industry. In this article, the main machineries of MW1050 automatic die cutting machine produced by Shanghai YAWA Printing Machine Ltd. co. were discussed in the virtue of machinery kinematics reliability theory and value analysis theory in order to finding the major factors effecting performance of the main machinery.The main contents are as follows:1. Machinery kinematics reliability analysis. The mathematics model was built on the output coefficient of machinery performance. It was elaborated about the basic theories on kinematics reliability, machinery kinematics model and machinery kinematics precision model. It was discussed that the random characteristics of machinery components and machinery input motions. And the appreciate mathematics model was built according to discussions.2. Kinematics reliability analysis on MW1050 main machineries. The kinematics reliabilities of lower elbow-bar mechanism, linkage and main chain roller were analyzed. And the appreciate reliabilities were computed.3. Studying value analysis (VA) methods. The basic theories and studying methods were elaborated in the section. The analytical hierarchy process (AHP) method was improved on the basis of former methods. The validity of improved method was proved by using mathematics ways. It was showed that the improved method is more accurate than former ones and easier to compute.4. Value analysis on main component of MW1050. Main component's value of MW1050 was analyzed in accordance with value analysis process: Firstly, making the function analysis system technology (FAST) diagram, making the judgment matrix about importance of every hierarchical function and computing significance of every function. Secondly, adjusting and distributing actual cost and computing cost coefficient. Finally, computing value coefficient, searching the factor making the function not to match the value of main machinery and estimating final cost.The performance of main component of MW1050 automatic die cutting machine was analyzed and appraised in the virtue of machinery kinematics reliability theory and value analysis theory. A new study way was provided for designing die cutting machine. The analysis result is provided with specific theoretical and actual value.