Application of CNC Machining Technology in Construction Machinery Industry

Li Liancheng, Minister of Process Technology Department of Xuzhou Heavy Machinery Co., Ltd.

As the requirements for product manufacturing are getting higher and higher, the construction machinery industry is facing increasingly fierce challenges, and the importance of processing efficiency is becoming increasingly prominent. Each host manufacturer should constantly master various advanced processing technologies and be flexible with the site conditions. Application can shorten the manufacturing cycle and improve product quality.

Selection of processing equipment

Due to the extensive use of boom-type structures in construction machinery, such as truck crane booms, excavator booms, wrecker tractor arms, etc., it is often necessary to have several sets of equal diameter holes, and it is necessary to ensure a high degree of coaxiality, in addition to the workpiece Due to the long overall size, each host manufacturer often chooses an opposed horizontal double-sided boring and milling machining center (see Figure 1). The horizontal double-sided boring and milling machining center adopts two independent mainframes. The control panels of the two operation stations are connected by network cables. The position coordinates of the main machine and the auxiliary machine can be viewed from each other, so that the pupils maintain the coordinates of the main machine and the auxiliary machine. Convenience.

Figure 1 Horizontal double-sided boring and milling machining center

The X-axis guides of the two mainframes in the double-sided boring and milling machining center often have non-parallel conditions due to environmental factors such as foundation. Therefore, it is necessary to periodically check the verticality and coaxiality between the axes of the machine tool . In order to be able to measure the coaxiality of the two masts of the main engine and the auxiliary machine efficiently, the machine tool often needs to configure the RENISHAW detection system to collect data from multiple points (Fig. 2 is RENISHAW to detect the coaxiality of the two masts), and the coaxiality is better. The distribution area is such that the processed portion of the workpiece is within the region.

Figure 2 RENISHAW probe detection mast coaxiality

Parts of construction machinery products, such as turntables for large-tonnage all-terrain cranes, often require structural parts with narrow spacing to be machined. Ordinary drilling and milling machines are too large to be able to enter narrow spaces for processing, pentahedral machining centers The narrow vertical milling attachment head just solves this problem, so there is no need to purchase special non-standard tools , which saves costs and improves processing efficiency.