In this guide, you can learn about the CNC milling machine.

1. Multi coordinate linkage characteristics of CNC milling machine

In order to process the complex contour shape, the CNC milling machine must control the tool movement along the set trajectory. The servo system of the CNC milling machine is required to coordinate the action in the multi coordinate direction at the same time and maintain the predetermined relative motion relationship to realize the multi coordinate linkage. Therefore, the function of the CNC system of the CNC milling machine is higher than that of other types of NC systems. Generally, the CNC milling machine can control the feed of the three coordinate axes of meaning, a and Z, and at least realize the linkage of any two axes. In addition, other requirements can realize the linkage of three axes. After adding a CNC dividing head or rotary worktable, it can become a four coordinate system to process more complex parts.

2. Spindle characteristics of CNC milling machine

The spindle sleeve of CNC milling machine usually has automatic chuck, tool retraction device, etc. it can complete tool loading and unloading in a short time according to the instructions, and the tool change operation is more convenient. For the multi coordinate CNC system, the spindle can not only move along the Z axis, but also swing around the X and Y \ z axes, which further expands the motion range. Therefore, the spindle structure of CNC milling machine is more complex than that of other types of machine tools.

Machining characteristics of CNC milling machine

1. CNC milling machine is flexible, universal and highly flexible

CNC milling machine can process not only plane parts, variable angle parts, but also curved surface parts. CNC milling machine can realize drilling, boring, reaming, tapping and other hole processing, can realize the processing of plane, inclined plane and groove surface, can also realize the processing of curved surface contour and complex profile, and can complete the processing of all surfaces at one time. The more complex the parts, the more advantages of NC milling machine can be reflected.

2. CNC milling machine has high machining accuracy

At present, the pulse equivalent of CNC milling machine generally reaches 0.001mm, its feed transmission chain is shorter than that of general milling machine, the reverse clearance and lead screw nut error can be compensated by CNC device, and the high-progress CNC system can reach 0.1 μ m。 The NC milling machine automatically carries out the CNC machining without human intervention, which reduces the human error, and the machining dimension consistency of the same batch of parts is better, which ensures the machining quality. CNC milling machine can process complex surface, which can not be realized by ordinary milling machine.

3. CNC milling machine can significantly improve productivity

When the processing parts are changed, it is only necessary to re compile the new NC milling machine processing program, and there is no need to prepare the special fixture and process equipment in each process, which saves the process preparation time and shortens the production cycle. In addition, the CNC milling machine can highly concentrate the processes such as drilling, milling and boring, which not only reduces the workpiece clamping error, but also reduces the multiple clamping and turnover time of semi-finished products, so as to improve the production efficiency. The CNC milling machine has the functions of fast forward, fast backward and fast positioning. Coupled with the stepless speed change of the NC milling machine spindle, it is more conducive to select the CNC cutting parameters and reduce the cutting time. The productivity of complex surface can be increased by more than 10-5 times than that of ordinary milling machine.

4. CNC milling machine can reduce the labor intensity of operators

The CNC milling machine can automatically process parts according to the pre programmed processing program. The operator only needs to operate the keyboard, load and unload workpieces, intermediate measurement and observe the movement of the machine tool without heavy manual operation, which reduces the labor intensity and improves the working conditions.