How to choose fixture for CNC machine tool processing
When processing parts in small batches, combined fixtures, adjustable fixtures or other general fixtures should be used as much as possible to reduce production preparation time and save production costs. The CNC machine tool only considers the use of special fixtures in batch production, and the selected tool setting points are processed with mathematics and simplified programming.
The loading and unloading of parts should be fast, convenient, and reliable, so as to shorten the dwell time of CNC machine tools and the calibration of tool points on the machine tools. Each part on the fixture should not interfere with the processing of the surface of the part by the machine tool. The clamp must be open, and the components of its positioning clamping mechanism must not affect the cutting operation during processing. Easy to check during processing. So how to choose fixtures for CNC machine tools? Consider the following points:
For single-piece and small-lot production, the combination fixture, adjustable fixture and other general fixtures are preferred. To shorten production preparation time and save production costs. 2. In batch production, special-purpose fixtures are considered for CNC machine tool processing | Dongguan computer gong processing | high-speed CNC processing | mechanical part processing | CNC processing, and strive to be simple in structure.
3. The loading and unloading of parts should be fast, convenient and reliable, so as to shorten the machine's pause time and reduce the auxiliary time.
4. In order to meet the precision of NC machining, the fixture positioning and clamping accuracy are required to be high.
5. The parts and components on the fixture should not prevent the machine tool from processing the surface of the part, that is, the fixture should be set aside, and its positioning and clamping components should not affect the processing. Pneumatic or hydraulic fixtures and multi-station fixtures can be used.
6. In order to improve the efficiency of CNC processing, pneumatic or hydraulic jigs and multi-station jigs can be used for processing large batches of parts.