Computer aided blanking of developable surface;

blanking and welding, relevant measures and reasonable process are made to ensure the precision demand of "upper draft tube liner.

Characteristic and Dynamic Monitoring of Hydraulic System in New Type Precision Cropping Machine;

Research on the Heat Stress Triaxiality in the Cropping;

To calculate accurately the cropping time in variable-vibration cropping,The mathematic expression of theoretical stress concentration factor in the tip of the V shaped notch containing its geometric parameters is built theoretically by analyzing stress field distribution of V shaped notch tip.

Application of Excel in Combination Cutting;

Shearer drum helical vane's figuration includes cutting, pressing and sealing, at the same time the cutting is one of the most important procedure.

The paper studies all kinds of mathematical model's characters and solving algorithms of one-dimension and two-dimension optimal cutting.

A new grouping optimization method based on the similarity of parts is proposed,which is intended to solve the low-efficiency and local optimization problems in large-scale cutting stock problem(LCSP).

This paper discusses the establishment and solution on the model of cutting stock problem and applies this model to production and practice.

But the calculation of the baiting size of the baffle plate and spacer pipe is complex.

Considering material characteristics of clad steel plate tower,the procedure features:baiting,rolling circle,checking circle and welding should be emphasized in the manufacturing process of clad steel plate tower.

Considering the existing problems in size calculation of traditional variable cross-section bridge pier steel moulding plate and mould baiting method, one engineering instance is analyzed to put forward a new and effective method, which is helpful for reducing labor and material, saving time, and improving the calculation accuracy.