论文部分内容阅读
当铣削框架型大工件时,为防止工件相对夹紧夹具基面的横向偏移,要求补充夹紧工件,哈尔科夫农业机械设计与工艺研究所设计了一种气动夹紧装置,该装置用气动六通阀与主夹紧夹具联锁。该装置(见图)由直径为80mm 的双作用气缸、可在轴3上摆动的压板1和2、顶柱11(斜度6°)、沿垂直面移动的滚柱10组成。当压板2退出时,将工件装在夹具上。当压缩空气进入活塞 A 腔时,活塞7和楔杆8一起向左移动,楔杆8使滚柱10向上,使顶柱的位置固定,借助弹簧9和螺钉12保证压板1固定。预柱11的斜面和杆8可建立自锁关系。活塞6和杆5向右移动,与螺钉4接触,压板2将工件压在压板1上。这样,两压板就可靠地夹紧了工件。
When milling a large frame-type workpiece, to prevent the workpiece relative to the clamp base horizontal offset, requiring additional clamping workpieces, Kharkov Agricultural Machinery Design and Process Institute designed a pneumatic clamping device, the device Interlock with main clamping fixture with pneumatic six-way valve. The device (see picture) consists of a double-acting cylinder of 80 mm in diameter, pressure plates 1 and 2 oscillating on the shaft 3, a top column 11 (6 ° inclination) and a roller 10 moving along a vertical plane. When the platen 2 exits, the workpiece is mounted on the jig. When the compressed air into the piston A cavity, the piston 7 and the wedge bar 8 together to the left to move the wedge lever 8 so that the roller 10 upward, so that the position of the top column, with the help of the spring 9 and the screw 12 to ensure that the platen 1 is fixed. The slope of the pre-column 11 and the rod 8 may establish a self-locking relationship. The piston 6 and the rod 5 are moved to the right and come into contact with the screw 4, and the pressure plate 2 presses the work against the pressure plate 1. In this way, the two platen reliably grip the workpiece.