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The error of the three-dimensional structure light measurement is analyzed in the paper. The experiment is done to verify the presence of measurement error. The error of data is analyzed and some conclusions are gotten. The three-dimensional structure light measurement is based on the triangulation principle. The error distribution is different because of the view angle of measurement equipment relative to the part to be inspected, the effect of the external environment light and the effect of the data processing software system. Finally, the corresponding compensation measures are put forward in the paper according to different errors.

For the short life of hot work die in enterprise directly caused problems the waste of resources and the rising cost of production. Based on studying the biological prototype of crack-resistance of plant lamina and found that surface thermal fatigue crack is one of the main factors affecting the service life of hot work mould, it is put forward thoughts about the local bionic laser melting on mould surface to block cracks. Different from the traditional mould surface integral laser transformation hardening (LTH) technology, using laser melting simulating plant lamina to block cracks on the partial surface of mold, life of bionic strengthened die is improved within 1~1.5 times. Experiment results show that a new method is provided to improve the service life of casting mould and promoting this technology will bring significant economic benefits for the mould industry.

As there are the errors during the manufacturing and assembling of horizontal driving machine (HDM). The exceptional knocking noise is generated during some products running. The failure rate of product quality is rising as well. The forward and reverse driving noise of HDM was tested and analyzed. The pictures was collected by universal tool microscope. The results show that hot runner is not smooth enough to reduce transferring pressure and increase the shrinkage of worm pouring gate, which lead to slight conical degree of product and pitch deviation at worm pouring gate. As the pitch makes worm inset slightly worm gear when clockwise rotating, the noise and vibration was produced consequently in this direction. The proposals were given, such as strengthening the maintenance of hot runners, controlling and inspecting product conical degree, and optimizing HDM mould and increasing its accuracy, and so on.

The quality of hole is difficult to be guaranteed and tool wears severely in drilling process of the carbon fiber composite material. To investigate the drilling process, a series of drilling experiment has been carried out .The influence law of drilling parameters, including the spindle speed, the feeding speed and the diameter of drill, on the drilling force and drilling quality for the carbon fiber composite material has been investigated.

Conveying is the important part of product processes, which is significantly affected by product structures. Based on the point of conveying, appropriate design will be result in significant improving conveying performance and reducing the degree of automatic conveying difficulty, then equipment would be simplified, and investment reduced. The design strategies for allover include: reducing the parts quantity and variants, corresponding the part geometry with the conveying manner, and parts geometry convenient for checking and identifying. The methods include two situations: design for conveying in the machining process and design for conveying in the assembly process. Applications of parts design for automatic conveying are illustrated.

The quality of hole is difficult to be guaranteed and tools wear severely in the drilling process of titanium alloy. To investigate more efficient methods to improve the quality of holes, the drilling experiments of titanium alloy Ti6Al4V were carried out under different drilling speed and different feeding speed. The drilling force was achieved through the dynamometers in the experiment. Simultaneously, a series of drilling experiment of titanium alloy was carried out with the two different shape drills and three different diameter drills. The comparison of the achieved drilling force proved that the sharpened tool is better to guarantee the quality of hole for titanium alloy Ti6Al4V.