What is a 4-axis machining center?
4-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 machines. The processing technology of the two is basically the same, and the structure is somewhat similar. CNC milling machines are divided into two categories: without tool magazine and with tool magazine.
4-axis: Generally, when the workpiece is not positioned in space, there are six degrees of freedom, X, Y, Z three linear displacement degrees of freedom and the corresponding A, B, C three degrees of freedom of rotational displacement. Usually, what we call a three-axis machining center is to process objects through the three linear axes of X, Y, and Z. The 4-axis is the addition of the A rotation axis on the basis of the three-axis, that is, the object is processed on the four displacement degrees of freedom of X, Y, Z, and A.
4 axis CNC refers to which 4 axis and what is the 4th axis used for
4-axis CNC refers to X, Y, Z, and rotary axes, and the 4th axis is used to rotate around other axes.
How to set cnc usb controller 4 axis
The 4th axis and the 5th axis refer to the two rotary axes of the machining center except X, Y, and Z.
Types of 5-axis machine tools: cradle type, vertical type, horizontal type, NC table+NC indexing head, NC table+90°B axis, NC table+45°B axis, NC table+universal horizontal 5-axis linkage CNC machine tool  A-axis °, 2-axis NC spindle, etc.
There are two ways for the rotary axis of the vertical 5-axis machining center. One is the table rotary axis. The table set on the bed can rotate around the X axis, which is defined as the A axis. The general working range of the A axis is +30 degrees to- 120 degrees. There is also a rotary table in the middle of the worktable, which revolves around the Z axis, which is defined as the C axis, and the C axis rotates 360 degrees. The advantage of this arrangement is that the structure of the main shaft is relatively simple, the rigidity of the main shaft is very good, and the manufacturing cost is relatively low. However, the general worktable cannot be designed too large, and the load-bearing capacity is also small, especially when the A-axis rotation is greater than or equal to 90 degrees, it will bring a large load-bearing moment to the worktable when the workpiece is cut.
The other is to rely on the rotation of the vertical spindle head. The front end of the main shaft is a revolving head, which can circle the Z axis 360 degrees to become the C axis. The revolving head also has an A axis that can rotate around the X axis, which can generally reach more than ±90 degrees to achieve the same function as above. The advantage of this setting method is that the spindle processing is very flexible, the worktable can also be designed to be very large, and the huge fuselage and huge engine shell of the passenger aircraft can be processed on this type of machining center.