Abstract
Accompanied by the development of the machine tool industry, there’s an ever-rising requirement of the manufacturing precision standard for products. Clamping devices for machine tools, as an indispensable part of manufacturing, have crucial influence on the upgrading of the entire industry.In order to provide magnified constant clamping force, this work proposes systematic processes to design a clamping device applied to machine vices mainly with the combination of translating cam and toggle mechanism. The cam profiles, pitch curves, and paths of cutter are derived and expressed parametrically firstly by designing and calculating with given parameters. After a study of relationships between design parameters, an analysis of mechanism errors in the output of the devise causing by clearance has been undertaken so that the characteristics, utilities, and usefulness of the mechanism can be assessed.By combining linkages with the translating cam clamping mechanism, this work further synthesizes a self-centering clamping devise whose two clamping parts move the exact same distance in opposite direction simultaneously that can improve processing quality since it maintains the work-piece central position. Starting with the discussion of output forces of self-centering clamping mechanisms as well as summarizing feasible mechanism types, the influence of parameters on design result is then analyzed so as to propose some advices and directions while designing afterward.