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在多工位螺母冷镦机上采用大张嘴夹钳,可以明显提高车速,这是因为转送夹钳的性能直接影响机床的生产率和工作平稳性。在编制螺母冷镦机的工作循环图时,如果采用了大张嘴夹钳,在按排一次工作循环中,可以增大夹钳位移的运动角度,压缩夹钳停留在模口的停留角度,这就为高速创造了条件。最近在上海标准件机修一厂试车成功的 ZM308 8毫米螺母冷镦机(上海标准件技术研究所设计),采用了大张嘴夹钳,生产率达到150～180件/分。试车时机床运转平稳、噪声小。经测定,在生产率为150件/分、机床未经基础处理时,噪音为85.6分贝。
The use of a large mouth clamp on a multi-station nut cold heading machine can significantly increase the speed of the machine, because the performance of the transfer clamp directly affects the machine productivity and work stability. In the preparation of the nut cold heading machine working cycle diagram, if you use a large mouth clamp, press the row in a work cycle, you can increase the clamp movement of the angle of displacement, compression clamp stay in the mold stay angle, which Created conditions for high-speed. ZM308 8 mm nut cold heading machine (designed by Shanghai Standard Parts Technology Research Institute), which succeeded in trial running of a standard part machine in Shanghai recently, adopted a large-mouth jaw clamp with a production rate of 150 to 180 pieces / min. Test machine running smoothly, low noise. The measured, at a productivity of 150 / min, the machine without the basic treatment, the noise was 85.6 dB.