Motion platform quick locking method and device

Abstract

The invention discloses a motion platform quick locking method. In the method, a synchronously motioning locking shaft is arranged on a motion platform and is sleeved with a locking sleeve; the locking sleeve comprises an upper-half sleeve and a lower-half sleeve; one end of the upper-half sleeve and one end of the lower-half sleeve are fixedly connected with each other, while the other ends are in threaded connection with a locking threaded rod in opposite threaded screwing directions respectively; the locking threaded rod clockwise or counterclockwise rotates under the driving of a driving device; and the upper-half sleeve and the lower-half sleeve simultaneously hold or release the locking shaft under the rotation of the locking threaded rod so as to realize the locking the motion platform. The method has the advantages of high locking speed and high locking accuracy. A motion platform quick locking device comprises the locking threaded rod, the driving device, the locking shaft fixed on the motion platform and the locking sleeve sleeved on the locking shaft, wherein the locking sleeve comprises the upper-half sleeve and the lower-half sleeve; one end of the upper-half sleeve and one end of the lower-half sleeve are fixedly connected with each other, while the other ends are connected with the locking threaded rod in the opposite threaded screwing directions respectively; and the driving device is connected with the locking threaded rod. The device has the characteristics of stable and reliable property and long service life.

Description

technical field [0001] The invention relates to a mechanical locking method and device, in particular to a fast locking method and device for a moving platform. Background technique [0002] In a mechanical motion system, after the motion mechanism reaches a certain predetermined position, if it is necessary to keep the motion mechanism still for a certain period of time to prevent misoperation, it is necessary to lock the motion mechanism. At present, the working principle of commonly used locking devices is to use friction plates or wedges to provide resistance in the moving direction of the moving mechanism for locking. For tight machine tools, since the direction of motion is the direction that produces the effect of resistance, it is also the direction that needs to be detected at the same time, so the motion mechanism is more sensitive to the force in this direction, and it is easy to cause disturbance of the motion mechanism in this direction, resulting in movement T...

AI Technical Summary

Problems solved by technology

At present, the working principle of commonly used locking devices is to use friction plates or wedges to provide resistance in the moving direction of the moving mechanism for locking. For tight machine tools, since the direction of motion is the direction that produces the effect of resistance, it is also the direction that needs to be detected at the same time, so the motion mechanism is more sensitive to the force in this direction, and it is easy to cause disturbance of the motion mechanism in this direction, resulting in movement The positioning accuracy of the mechanism is reduced, and the general locking mechanism cannot take into account the performance characteristics of large locking force, fast locking and unlocking speed, and long life of the locking device.

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