公开(公告)号：US4899628A

公开(公告)日：1990-02-13

申请号：US205688

申请日：1988-06-13

申请人： Daniel J. Seichter ,  David L. Olofson

发明人： Daniel J. Seichter ,  David L. Olofson

IPC分类号： B23Q17/00 ,  B23B29/034 ,  B23B47/00 ,  B23Q1/48 ,  B23Q11/00 ,  G01M1/36

CPC分类号： B23B29/03467 ,  B23Q1/4804 ,  B23Q11/0035 ,  G01M1/36 ,  Y10T82/125 ,  Y10T82/2529

摘要： A dynamically compensating counterbalance enables a numerically controlled contouring head to maintain proper balance through large slide travels, cutting tool radial travels, and weight changes in the cutting tool at high speeds. A counterweight within the contouring head moves oppositely to the slide direction by means of a pair of interconnected fluid cylinders. Slide reciprocation under numerical control pumps the first cylinder to slave the second cylinder and the counterweight connected thereto. The counterweight is of a high density material, thereby enabling the counterweight to have lesser and proportional travel than the corresponding slide travel while maintaining proper counterbalance. Proportional slide and counterweight travels are accomplished by employing cylinders of an unequal areas. The invention includes a servo operated third cylinder in fluid communication with the first and second cylinders. The servo control senses certain imbalances and strokes the third cylinder to alter the fluid in the counterweight cylinder, thereby causing displacement of the counterweight without corresponding displacement of the slide, which remains under numerical control.

摘要翻译： 动态补偿平衡使得数控轮廓头能够通过大的滑动行程，切削刀具的径向移动以及高速切削刀具的重量变化来保持适当的平衡。 轮廓头内的配重通过一对相互连接的液压缸相对于滑动方向移动。 在数字控制下的滑动往复运动使第一气缸泵送从而连接第二气缸和配重。 配重是高密度材料，从而使得配重能够在保持适当的平衡的同时具有比相应的滑动行程更小和成比例的行程。 比例滑块和配重行程通过使用不平等区域的气缸来实现。 本发明包括与第一和第二气缸流体连通的伺服操作的第三气缸。 伺服控制器感测到某些不平衡并且冲击第三气缸以改变配重气缸中的流体，从而导致配重的位移，而不会保持在数字控制下的滑块的相应位移。