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In recent years, the high-speed milling machine and the carbide insert of the knitting needle have been successfully developed, which has played an active role in promoting the technical equipment transformation of the needle industry. In general, they are all the development of the prototype of "Kimura". Following the cam striking, the pattern of spring pull-in, the motion of the cam-oscillating push rod is transmitted and the cutting feed force; the needle and the needle are well known. Roller clamp type. Mainly in the structure of the milling head has been modified to adapt to high speed. The Yantai machine changed the milling cam lift to an adjustable version to accommodate different groove depths.
The manufacturer did not provide any technical parameters. After self-test by our factory, the radial runout of the milling shaft is 0.01mm, the axial runout is 0.005mm (refer to the new machine); the milling direction is opposite to the vise jaw, the perpendicularity of the table, Parallelism, etc., due to the lack of special measuring tools, the milling head speed is 4200r/min, 5100r/min. The long-term full-load working temperature rises normally, but the motor is dragged directly, and the speed control method is lacking.
Milling to 10 pieces per minute can be milled. To change the frequency, you need to change the relevant transmission parts. 80 wire is used as needle bar material, hardness is HB241～HB248, blade is Jiangyin production, outer diameter is 17mm, thickness is 0.16mm, milling is adjusted to 8 pieces per minute, and 3000 pieces (single head) can be stably produced in 480min per shift. It is about double the number of old-fashioned aircraft.
The needle groove of the high-speed slot milling machine and the carbide cutting blade is clear and square, the fat groove phenomenon is greatly reduced, and the roughness of the side surface of the groove is compared with the rough sample under the magnifying glass of 10 times, and the Ra reaches 3.2 μm to 1.6 μm. The old process is improved by more than two grades, but the roughness of the entire milled surface is not uniform. Due to the good dimensional consistency and high quality of the trough, the process qualification rate and finished product production rate were improved. The HS65707 needle was tested with a ligament fastness tester, and the tongue fastness reached 75N. (Finish)
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Henan Gems Machinery Co.,Ltd , http://www.gemsmachine.com