According to the number of coordinates of machining center movement and simultaneous control, there are three axes and two linkages, three axes and three linkages, four axes and three linkages, five axes and four linkages, six axes and five linkages, etc. Three axes and four axes refer to the number of motion coordinates of the machining center, and linkage means that the control system can control the number of motion coordinates at the same time, thus realizing the position and speed control of the tool relative to the workpiece.
According to the number and function of the workbench, there are single workbench machining centers, double workbench machining centers and multi-workbench machining centers.
According to the machining accuracy, there are ordinary machining centers and high-precision machining centers. Ordinary machining center, resolution 1μm, maximum feed speed 15 ~ 25m/min, positioning accuracy about l0 μ m. High-precision machining center, resolution 0. 1μm, maximum feed speed15 ~100 m/.
digital control
CNC machining center is a kind of CNC machine tool with tool magazine, which can automatically change tools and perform various machining operations on workpieces within a certain range.
The characteristics of machining parts in machining center are as follows: after the machined parts are clamped once, the CNC system can control the machine tool to automatically select and replace tools according to different processes; Automatically change the auxiliary functions such as the spindle speed, feed speed and the movement track of the cutter relative to the workpiece, and continuously and automatically perform multi-process processing such as drilling, reaming, reaming, boring, tapping and milling on each processing surface of the workpiece.
Because the machining center can automatically complete various processes in a centralized way, it can avoid human errors, reduce the time of workpiece clamping, measuring and machine tool adjustment, as well as the time of workpiece turnover, handling and storage, and greatly improve the machining efficiency and accuracy, so it has good economic benefits. Machining center can be divided into vertical machining center and horizontal machining center according to the position of spindle in space.