The CNC Machine Tool Section Selects the Key Points

1. Table movement accuracy and displacement repeat accuracy:

This is the most important point when selected, but also can not pass the picture or ordinary operation can be seen, only after the purchase of test can be certified, the current equipment at the factory can meet the design standards, the key is to run one to two years after the accuracy is very stable, in this regard, european production of CNC machine tools do a better job.

2. Rigidity and stability of the machine bench:

In order to make CNC milling machine has enough stability, rigidity to avoid vibration many manufacturers are using marble as a bed body material, some Japanese manufacturers use steel as a bed body, because the deformation of steel at different temperatures than marble, instability, manufacturers will use compensation in the software to eliminate the precision loss caused by deformation.

At present, most manufacturers use natural marble or artificial marble as a bed body, it is recommended to use marble bed body equipment, marble in peacetime maintenance using shredding and scrub water, not available alcohol. Dry with a dry cloth after wiping, and wait until the moisture is completely volatile before you can work.

3. Speed and stability of the shaft:

Currently, two shafts are used for rolling bearings at speeds of up to 80,000 retwess and air bearings at speeds of up to 120,000 retwess. If the milling machine should use rolling bearings, because its vertical bearing is better than air bearings, its drill chuck is also the focus of the inspection range, some drill chucks are not easy to replace maintenance difficulties, some drill chuck wear quickly became consumables and replacement costs are very expensive, some need daily maintenance waste time.

Nanjing thinking about the shaft of the pressure foot is another, its life and design is unreasonable will also cause a lot of trouble, such as the shaft and pressure foot between the seal caused by the vacuum cleaner to a large amount of power to cause the vacuum cleaner procurement of funds waste or central vacuum power waste, and may produce the circuit board hole chip discharge bad situation.