Interlocking structure for rotary and linear motion

Abstract

The invention provides an inter-shaft linkage structure of rotation and linear motion. A jointing portion is bridged between a rotation shaft and a linear shaft which coaxially correspond to each other. The rotation shaft and the linear shaft can carry out relative slippage along an axial direction so as to change a distance between the two shafts. Simultaneously, the rotation shaft and the linear shaft are linked radially so that the rotation shaft can drive the linear shaft to carry out synchronous rotation motion.

Description

Technical field [0001] The present invention relates to the technical field of electric motors, in particular to an inter-axis linkage structure for rotation and linear motion. Background technique [0002] The rotary motor and the linear motor are connected in series in the axial direction, and the force of the rotary and linear motions can be output simultaneously or sequentially by the same spindle, which has been disclosed in the prior art. Among them, in order to avoid the linear motor from being overloaded, Such as figure 1 In the prior art shown, the spindle 1 is in a movable sliding connection state with respect to the rotary motor 2, and when the linear motor 3 drives the spindle 1 for axial linear displacement, there is no need to load the weight of the rotary motor 2 , In order to save energy, the same makes the spindle 1 relative to the rotary motor 2 in the movable state, can reduce the load of the linear motor, only it makes the spindle 1 and the rotary motor 2 in t...

AI Technical Summary

Problems solved by technology

[0002] Connecting the rotary motor and the linear motor in series in the axial direction can rely on the same mandrel to simultaneously or successively output the applied force of rotation and linear motion, which has been disclosed in the prior art. Among them, in order to avoid the excessive load of the linear motor, like figure 1 In the prior art shown, the mandrel 1 is in an axially movable sliding connection state relative to the rotating motor 2, and when the linear motor 3 drives the mandrel 1 to linearly displace in the axial direction, there is no need to load the weight of the rotating motor 2 , to save energy, the same makes the mandrel 1 movable relative to the rotating motor 2, which can reduce the load of the linear motor, only it makes the mandrel 1 and the rotating motor 2 both engage in the radial direction and The combination technology of sliding joint in the axial direction has a certain degree of demand in terms of machining accuracy and lubrication, and it is also easy to reduce the accuracy of the action due to wear and tear after use. It is not a perfect design.

[0003] see also figure 2 As shown, another prior art content disclosed in the prior art is to make the rotating shaft 5 of the rotating motor 4 drive the output shaft 7 of the linear motor 6 to rotate, and to make the output shaft 7 connect with a shaft coupling member 8 The relative displacement between the rotating shafts 5 in the axial direction is a defect derived from the axial relative slippage between the rotating shaft 5 and the rotating motor 4 that can be avoided by the conventional technology, but the joint structure between the rotating shaft 5 and the rotating shaft 5 , with the help of a large increase in size, it is enough to achieve a combined state with radial engagement and axial sliding connection with the shaft coupling member 8, resulting in its overall volume being too large and its weight relatively increased, which is not conducive to industrial The negative effect of using it above is obviously not perfect.

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