Based on the influence factors of location error in clamping apparatus design this paper has established the relation function between the procedure sizes or angles and the location norm parameters in which the positioning error substituted by the approximate differential value of function.

Based on the Influence factors of location error in clamping apparatus design, this paper has established the relation function between the procedure sizes or angles and the location norm parameters, in which the positioning error substituted by the approximate differential value of function.

About Fuzzy-Comprehensive-Evaluation-Based Decision of Location Datum;

This article completely analyses the calculation method of work piece in location datum of Vshape block, puts forward a new different viewpoint from others with regard to V-shape block location datum.

This new method has been proved to be able to improve the origin reference location accuracy and efficiency greatly.

On Method of Choosing Locating Datum to Improve Machining Precision;

Focusing on the problems occurred in rough machining of cylinder, analysis an improvement is done to the locating datum of cylinder and corresponding fixture is designed with satisfactory economic benefit by improving machining quality and production efficienc

In this paper, the decision mechanism based on Neural Network, in which a new kind of numerical representation is used to aptly represent symbolic relationships among feature information about workpiece locating and setup planning, is used to to determine the workpiece locating datum.