Four-axis machining center
Machining center: usually refers to a CNC milling machine with a tool magazine. CNC milling machine is also called CNC(Computer Numerical Control) milling machine. CNC milling machine is an automatic processing equipment developed on the basis of general milling machine. Their processing technology is basically the same, and their structures are somewhat similar. CNC milling machines can be divided into two categories: non-tool magazine and tool magazine.
four axes: when a general workpiece is not positioned in space, it has six degrees of freedom, namely, three linear displacement degrees of freedom of X, Y and Z and three corresponding rotational displacement degrees of freedom of A, B and C.. Usually, the three-axis machining center we talk about is to process objects through three linear axes: X, Y and Z. Four-axis is the addition of axis A on the basis of three-axis, that is, machining objects in four displacement degrees of freedom of X, Y, Z and A..
Extended information:
1. Machining centers are often divided into vertical machining centers and horizontal machining centers according to the state of the spindle in space. The spindle in the machining center is vertical in space and horizontal in space. Spindle can be converted vertically and horizontally, which is called vertical and horizontal machining center or five-sided machining center, also called compound machining center.
2. According to the coordinate number of machining center movement and the coordinate number controlled at the same time, 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-axis and four-axis 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, so as to realize the position and speed control of the tool relative to the workpiece.
3. According to the number and function of the workbench, there are single workbench machining centers, double workbench machining centers and multi-workbench machining centers.
4. According to machining accuracy, there are ordinary machining centers and high-precision machining centers. Ordinary machining center, the resolution is 1μm, the maximum feed speed is 15 ~ 25m/min, and the positioning accuracy is about lμm m.. High-precision machining center, resolution of .1μm, maximum feed speed of 15 ~ 1 m/min and positioning accuracy of about 2μ m.. Between 2 ~ l μ m, 5 μ m is more, which can be called precision level.
Reference: Baidu Encyclopedia-CNC Machining Center