Bm12 - c is the heavy riveting machine in the hydraulic pressure , and this machine has added the riveting process long , and this parameter has the 30mm of ordinary type to add to 60mm , this machine is applied the five generation s swing riveting technology , and using the screw pole Bm12 - c是液压类中重型径向铆接机，除应用有第五代摆辗铆接技术外，该机加长了铆接行程，该项参数由普通机型的30mm加至60mm ，可满足长行程深孔内铆钉铆接的要求。
This machine is a kind of radial riveting machine , the machine adopted the advanced radial technology , and its movement path likes the 11 pieces of plum blossom s shape , and using the screw pole to ascend and descend the work bench the head part is fixed , and the t - slot of bench can fix the clamping apparatus available , the center hole of bench and axis are coaxial , the one - way adjusting valve of liquid current is effectively controlled riveting speed Jm12 - c是液压类中重型径向铆接机，除应用有第五代径向铆接技术外，该机加长了铆接行程，该项参数由普通机型的30mm加至60mm ，可满足长行程深孔内铆钉铆接的要求。工作台，并具有夹具梯形槽，工作台中心孔径与主轴轴线同轴，可用于夹具定位。气路加装双向调节阀，有效控制铆接速度。
In the light of the features in special outer protection and displacement detecting control , the methods , principle , precision and characteristic in detecting displacement of various cylinders are comparatively analyzed , an advanced non - contact detecting method with protection function suitable for detecting displacement of a long stroke cylinder is raised ; the structure , stroke , precision and safety required by a long stroke cylinder are resolved 针对启闭机用油缸的特殊外防护和位移检测控制特点，对比分析了各种油缸的位移检测方法及原理、检测精度、特点；给出了一种先进的适合长行程液压缸位移测量，兼具防护功能的非接触测量方法，解决了长行程液压缸位移测量对结构、行程、精度、安全等问题的要求。
