Overhanging shaft positioning structure and motor transmission structure

Abstract

The present application relates to an outreach shaft positioning structure and a motor transmission structure, the outreach shaft positioning structure is used for fixing and positioning the free end of the outreach shaft, and the positioning structure includes a The adjustment structure is adjusted according to the force situation. This structure can realize the automatic adjustment and positioning function of the external extension shaft, so that the external extension shaft can transmit the load force to the adjustment structure after bearing the external load, and the adjustment structure uses its own centering and positioning function to adjust its inner hole and the extension shaft in real time The relative position of the two is to achieve the largest contact area between the two, to minimize the contact pressure, to increase the structural life by reducing mutual wear; The overall accuracy of the product can still maintain a good level, and the performance will not be affected.

Description

technical field [0001] The present application relates to the field of transmission technology, in particular to an outreach shaft positioning structure and a motor transmission structure provided with such a positioning structure. Background technique [0002] Such as figure 1 As shown, in the existing motor transmission device, the extended shaft 2 of the motor 1 is fixed on the box body 4 through the cylindrical metal sleeve 3 through interference fit, and a small gap is formed between the extended shaft 2 of the motor and the metal sleeve 3 Cooperate. When the worm screw 5 fixed on the motor extension shaft 2 and the gear 6 fixed on the box body 4 are engaged with each other for transmission, the motor extension shaft 2 will be warped and deformed in the V direction due to the reaction force (the deformation is in the disappear when the meshing stops), and then produce a small area of ​​mutual extrusion and scraping with the metal sleeve 3. With the increase in the num...

AI Technical Summary

Problems solved by technology

When the worm screw 5 fixed on the motor extension shaft 2 and the gear 6 fixed on the box body 4 are engaged with each other for transmission, the motor extension shaft 2 will be warped and deformed in the V direction due to the reaction force (the deformation is in the disappear when the meshing stops), and then produce a small area of ​​mutual extrusion and scraping with the metal sleeve 3. With the increase in the number of meshing transmission / stops, the gap between the motor’s extended shaft 2 and the metal sleeve 3 will increase. Gradually wear and tear becomes larger, and non-recoverable pits are formed on the contact surfaces, resulting in abnormally large operating vibration and noise

Moreover, this structure requires high processing precision and centering assembly of the metal sleeve 3, and the assembly process is complicated

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