两端由螺纹固定,中间装有数列滚动轴承的销轴是应用较普遍的一种装配形式。一般销轴与滚动轴承内圈都采用紧配合,大直径销轴在检修中若施加外力太小,拆不下、装不进;施加外力太大,就会使两端螺纹损坏,因此,装拆很困难。我们在实际工作中,制作了冲杆,给检修提 Both ends of the thread fixed, the middle with a few rows of roller bearing pin is a more common form of assembly. General pin and the inner ring with rolling bearings are used tight fit, large diameter pin in the overhaul if the application of external force is too small, can not be demolished, can not be installed; applied external force is too large, it will make both ends of the thread damage, so the demolition is difficult. In the actual work, we made a punch, to overhaul mention