Hangji Group's seven-axis five-link CNC powerful forming grinding machine passed the appraisal

Hangzhou Machine Tool Group Corporation broke the foreign monopoly of the MKL7150×16/2 seven-axis five-link CNC strong forming grinding machine recently passed the appraisal.

The seven-axis five-link numerical control slow-feeding forming grinding machine is one of the highest level of machine tools in China, and it is a mechatronics product. The seven-axis five-link numerical control powerful forming grinding machine is mainly used for forming and grinding of aircraft engine blades and worm wheel arc crowns. At present, only a few industrialized countries in the world have mastered this technology. The machine tool broke the technical barriers in the field of high-end shaped grinding machines abroad, and made China occupy a new highland in the manufacture of high-end machine tools.

The seven-axis five-link numerical control slow-feeding forming grinding machine adopts the new patented technology of “column middle waist moving device” and pneumatic sealing of the spindle system, which increases the stability of motion and cutting rigidity, improves the service life of the bearing and ensures the rotation precision of the spindle. In view of the grinding characteristics of the circular crown, they created a mathematical model. They also created the first five-axis linkage CAM technology and grinding simulation system in China, and realized five-axis linkage full-closed control with high-precision grating feedback. For the first time, the multi-grinding wheel continuous dressing technology was applied to realize the long arc blade crown large-feed grinding, which improved the grinding production efficiency. The machine also uses temperature compensation technology to control the thermal elongation of the grinding head spindle and improve the forming grinding precision.

The machine has obvious social benefits and successfully replaced imported equipment, each of which can save foreign exchange of 2 million US dollars. The successful manufacture of the domestic high-end CNC powerful forming grinding machine provides domestic users with excellent cost-effective products, which plays a very good role in restraining the price of expensive imported machine tools.

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