牛头刨床刀架前面的舌箱同舌块之间,必须保持有较好的滑动配合,才能保证刨削质量。然而在实际工作中,由于舌箱同舌块之间经常发生磨损,因而它们之间不可能长久保持较好的滑动配合,最后总是要产生较大 Shaper head in front of the tongue box tongue with the block, you must maintain a good sliding fit in order to ensure the quality of planing. However, in practical work, since the tongue and the tongue often block between the wear and tear, so they can not maintain a good long-term good sliding fit, and finally always have to produce larger