How to improve the guide rail movement in the process of precision machinery parts processing performance

by:NJPE     2020-07-13
In the process of precision machinery parts processing, in order to improve the floating rail movement performance, the following three methods can be used. First of all is to improve the guide rail on loading direction stiffness, adopts closed in on the guide rail structure design, this 2 times than the single side stiffness can be improved; Reduce gas floating clearance; And vigorously closed, air should be regulated gas, clean gas, reduce the possibility of oscillation. In the gas circuit to design load compensation mechanism and automatic pressure regulating device quickly changed little floating clearance, pressure spring and roller control air bearing clearance; Or the reasonable layout of air cushion for the automatic balance adjustment, the high accuracy measuring machine, gas float precision should be 0. 001 - 0. Within 002 mm. Second can improve the damping force of guide rail movement, the holes of the air cushion damping force, the greater the more the more rigid, if using powder metallurgy porous material as a cushion, with large areas of microporous instead of holes throttle air cushion, the damping force will be bigger. In the case of precision machinery parts processing allows, can use gas Liquid two-phase lubrication, due to the guide rail contact surface oil film exists and increase the damping force. Also can use half floating rail structure, coordinate machine for air flotation guide and mechanical guide, in the form of the combination of use of the advantages of the two kinds of guide rail movement characteristics, not only improves the ability of resistance to the move, and keep the air floating guide rail gap is constant, and increase the damping force of guide rail movement, so as to improve the motion performance of the guide rail. Usually precision machinery parts processing, machine tools are not suitable for work in dirty and high temperature moist environment, the environment of power supply also have higher requirements, the machine power supply voltage should not be inferior to plus or minus 10%, three corresponding balance and stability. Too bad power grid must be equipped with regulated power supply, machine tools in addition to the normal tidiness and lubrication, must also be carefully kept and its parts.
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