Linear motion rolling function of mechanical parts

Linear motion rolling function component types and features of the linear rolling guide vice: with circular arc grooved roller and compared with the point contact bearing can be big, good rigidity, low friction factor. Linear rolling guide bush vice: low friction factor, thrifty. Trace move sensitive, accurate, low speed when no creeping prostrate. Rolling spline pair: very small friction resistance, can stop the high-speed rotating or reciprocating motion. Rolling guide block: for cylindrical roller, roller bearing can be approximately 10 times more of the ball bearing, the difference between the dynamic and static friction factor, the repeated start parking, reverse and high frequency can reduce the weight and power consumption, no slippage. Linear motion system load calculation, on the guide rail and slide block the action of load, because of the position of the workpiece center of gravity, the location of the driving force F and the start and stop deceleration provoked the inertial force and the external force such as resistance to change. Six equilibrium equation can use space force system. Structure and properties of linear rolling guide bush vice: linear rolling guide sleeve by the linear motion ball bearings, linear motion ball bearings bearing, circular guide shaft and guide shaft bearings on both ends. Due to structural reasons linear ball bearings can only do on the guide shaft axial linear reciprocating motion, and cannot rotate. Load ball bearing and guide shaft outside cylindrical as point contact, so the allowable load is small, but the friction resistance is very small. This sensitive heavy bearing movement precision is higher the price is low, maintenance bento, change easily, suitable for high precision request and load lighter linear reciprocating motion system. Linear rolling guide vice set of device to adjust way: linear ball bearings in the brackets, dedicated devices tools should be adopted by the outer end face, do not allow direct knock bearing so as to avoid deformation. The structure and working principle of rolling spline pair, rolling spline pair composed of spline shaft spline set of ball bearing and circulating installation, each other becomes 120 ° on the spline shaft has three spline, the spline has the ball and the raceway, the left and right sides of the three columns ball used for forward transmission torque, the other three columns used in reverse transmission torque. When the spline shaft and the spline sets of linear motion, the relative ball in raceway and rolling installation of reverse circulation, constitute a closed loop. Has the high life and strength. Installed, ball spline, circulation and sealing are assembled into a whole, can be at ease away from the spline shaft. Compact structure, simple assembly. Both can accept radial load, and can transfer torque. After selecting the diameter of the ball is rolling spline pair in produce interference, namely when loading, to progress, the contact rigidity movement precision, and impact resistance ability. Rolling guide, also known as the roller guide blocks of bearing can takong degree is high, stroke length is not restricted, movement sensitive long service life.