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在生产中拉床的用途很广,但对批量不大、品种多变的生产中,调换拉刀就要更换开合夹头,夹刀和取刀都很费力,操作麻烦。为此,改革成半自动夹头。经生产实践证明,这种夹头具有通用性好、操作方便,性能可靠、效率高等特点。夹头结构及工作原理如图所示。伸簧6和伸簧套7是用来支撑夹爪的,通过张力使联接片8顶住夹爪,靠其内锥面夹住拉力。夹头使拉刀通过夹爪在锥套中向小端越拉越夹紧,起到了自定心和夹紧作
In the production of broaching a wide range of uses, but not large quantities, variety of production, the replacement of broaches will replace the opening and closing chuck, folder knife and take the knife are very laborious, troublesome operation. To this end, the reform into a semi-automatic chuck. The production proved that this chuck has versatility, ease of operation, reliable performance, high efficiency and so on. Chuck structure and working principle as shown. Tension spring 6 and stretch spring sleeve 7 is used to support the jaws, the tension by the coupling piece 8 against the jaws, by its inner surface of the cone tension. Chuck so broach through the jaw in the taper to the small end of the more pull the clamp, played a self-centering and clamping