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本文所介绍的方法是好的,但还有一个缺点,就是保证滑输和导板接触的力量是依靠拖板重量在床面上所产生的摩擦力,但这是不很可靠的。由于工件加工余量或质地不均匀等原因,可能使滑轮脱开导板,这样也就影响了精度。如果在拖板左边加上一根拉力弹簧,另外也可以把导板做成槽形的(如附图),使滑输在槽中来回滑动,这样不但可以解决上述缺点,而且可以来回两面吃刀;本来在车到位时,要搖回原位吃刀,但现在只要使光杆倒转(车头不倒转),向后走刀又吃一刀,这样可以进一步提高效率。如果怕槽子两边用久了会磨损,可以把槽两边的导板做成雨半,使它可以调整,以排除空隙。
The method described in this article is good, but there is a further disadvantage of ensuring that the force of sliding contact with the guide is based on the weight of the pallet at the bed surface, but this is not very reliable. As the workpiece machining allowance or uneven texture and other reasons, may make the pulley off the guide, thus affecting the accuracy. If the left side of the pallet plus a tension spring, the guide plate can also be made of trough (as the figure), the slide in the slot back and forth sliding, so that not only can solve the above shortcomings, but also back and forth to eat both sides of the knife ; Had been in place when the car, to shake back to eat in situ, but now as long as the light pole upside down (the front does not reverse), go back and eat a knife backwards, so you can further improve efficiency. If you fear the use of both sides of the groove will wear for a long time, you can make the guides on both sides of the slot rain and a half, so that it can be adjusted to eliminate the gap.