The design of planar crank and silder mechanism owning allowable transmission angle together with most evident quick-return characteristics;

Based on the "Auxiliary Angle Method", this paper puts forward and solves the theoretical task for designing planar crank and slider mechanism with allowable transmission angle and most evident Quick-return Characteristics K max .

And then for every layer, basic characteristics were extracted, and saliency characteristics including intensity saliency, saturation saliency and color saliency were calculated.

Discussion on quick-return characteristics of planar linkage;

This paper presented an optimization method to the double crank slider six bar mechanism,which had quick-return characteristics,and was used in main drive of gear shaper.

The equal-visual angle theorem and half-angle rotation was described and the method of designing crank-slider mechanism with quick-return characteristics by motion geometry was presented,including drawing method and analytical method.

The larger the speed ratio coefficient of travel and the stronger the quick return characteristics in the unidirectional operated crank-slider mechanism are the higher its working efficiency is.

The quick return characteristics of planar linkage mechanisms have closely relationship with its crank angle θ between the two limiting positions.

According to the graph drawn above, it analysizes the effects of quick-return characteristics on load-transmitting performance in detail, which provides the basis for determining .

Practical application, the quick return characteristic of four bar linkage mechanism is utilized to shorten non-productive time and increase efficiency.