As we all know, the indexing plate and high-speed CAM divider is characterized by large size, size from a few meters to dozens of meters; The weight is very heavy, the weight from several tons, dozens of tons to hundreds of tons, which requires the machine to have enough stiffness and bearing capacity, to have enough space to accommodate the workpiece, but also have enough driving and cutting power, processing tools should also have the corresponding cutting ability and life. Therefore, must conquer this set of equipment and technology to complete these large, super large parts of the processing task. Dongguan Hengzhen Company has a good reputation in processing equipment for the manufacture of large geared gear housing for applications such as Marine and wind power equipment. It manufactures standard series of gear units weighing up to 100 tons and transmitting torque up to 350kNm. As the transmission gear is the core component of each transmission device, Dongguan Hengchun Company produces its own gear. The shell of the transmission device is composed of two parts, the upper shell and the lower shell, and the shell itself weighs 20 tons, and the shell is also manufactured by itself.

Foreign research and development for processing CAM segmentation large and very large parts of the equipment more achievements, progress is faster than us, more characteristic machine tools, higher technical level. From the relevant information of some foreign magazines, the methods and processing equipment of several European enterprises to process the representative indexing plate and divider are introduced selectively for the reference of the industry. Machining of Oversized Transmission Casings Example of 20 ton transmission lower casings manufactured by Renk. Comparison of actual cutting on cast iron casings with this tool proved that the machining of large cast iron casings was effective. The blade material has a good wear-resistant coating, suitable for high-speed machining. The power indicator is always in the green zone when the cutting speed is increased to 350m/min. In terms of vibration and noise, this tool can achieve higher cutting speeds. For comparison, the cutting speed used here is 215m/min. The test records show that the meshing time between the blade and the workpiece is reduced by more than half from 25.86min to 11.78min. At the same time, the cutting amount is increased from 1,209cm3/min to 2,268cm3/min. For the user, the direct benefit of improving machining speed or cutting efficiency is to significantly reduce machining costs.

Another result of the comparison test is that the machining CAM divider can only process half a workpiece per blade with the previous cutter processing, while the SECO DoubleOctomill face milling cutter can process 5 pieces per knife. Apparently, tool life is improved by a factor of 10. Thus, Renk's solution with SECO's DoubleOctomill face milling cutter on their large machine is a success. For this task, Renk used two large machining centers with a workpiece size of 9m×3.8m×2m, both for surface milling and premachining of bearing holes, from rough machining to sizing and complete hole machining. This way, Renk saves a lot of preparation time. Processing time is an important factor, so make full use of the production capacity of the machine tool. The average service time of each large machining center in the last 7 years is 4,700 hours. It takes 30 to 50 hours to process the upper and lower shells of a transmission, so every minute saved is worth it.

In recent years, when the demand for large machine tools in China's CAM segmentation market is strong, China's CAM segmentation enterprises have developed a number of gantry or bridge CNC boring and milling machine and CNC turning and milling complex machining center large and heavy machine tools. The market demand of these large machine tools has promoted and accelerated the development of large and heavy CAM dividers in China, and the development results are remarkable. Only by striving for excellence can Chinese enterprises make their products go further and wider to the world.