Zero-rotation-clearance elastic piece type axial buffer mechanism

Abstract

The invention relates to the technical field of buffer mechanisms, and discloses a zero-rotation-clearance elastic piece type axial buffer mechanism. The mechanism comprises a rotating shaft, an elastic piece type zero-clearance buffer sleeve and an accessory base; an accessory base adapter shaft is fixedly inserted into the accessory base in a sleeved mode; the upper end of the accessory base adapter shaft is inserted into the inner side of the lower end of the rotating shaft in a sleeved mode; the upper portion of the elastic piece type zero-clearance buffering sleeve is fixedly connected to the outside of the rotating shaft through an upper holding bolt; a copper sleeve is embedded in the elastic piece type zero-clearance buffering sleeve; a check ring for blocking the copper sleeve is installed below the rotating shaft; and a sealing ring sealed with an accessory base adapter shaft bearing is installed in the lower end of the rotating shaft. According to the zero-rotation-gap elastic piece type axial buffer mechanism, the unsprung mass is greatly reduced, the buffering effect is better, in addition, the low mass is more suitable for high-speed and high-acceleration occasions, and the zero-rotation-gap elastic piece type axial buffering mechanism is more suitable for carrying large-size parts and is more suitable for being used in high-precision occasions.

Description

technical field [0001] The invention relates to the technical field of buffer mechanisms, in particular to a shrapnel type axial buffer mechanism with zero rotation clearance. Background technique [0002] The cushioning in the Z-axis direction of the existing XYZ 3-axis or XYZR 4-axis mobile handling equipment is realized by a helical compression spring placed between the Z-axis guide rail sliders. This design has a large mass under the spring, and the cushioning effect is not good. Another improvement The mechanism installs the buffer coil spring above the front attachment. Although this reduces the mass below the spring, the coil spring cannot limit the R-axis degree of freedom. Therefore, the R-axis rotation degree of freedom is limited by two sets of guide posts and guide sleeves or positioning pins and chute. Due to the need for buffering, the guide post and the guide sleeve or the positioning pin and the chute must move relative to each other. In order to reduce the r...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a shrapnel-type axial buffer mechanism with zero rotation clearance, which has a much lower unsprung mass than the helical compression spring placed between the slide blocks of the Z-axis guide rail, so that The cushioning effect is better, and the lower mass is more suitable for high-speed and high-acceleration occasions. Compared with installing the buffer coil spring above the front attachment and restricting the R-axis rotation through two sets of guide posts and guide sleeves or positioning pins and slide grooves, zero backlash It is more suitable for the handling of large-sized parts, and it is more suitable for high-precision occasions. It has a longer service life due to no wear and tear. Compared with high-precision splines or high-precision polygonal guide sleeves, it has a simpler structure, easier processing, and lower cost. , and the lower unsprung mass corresponds to the advantages of better cushioning effect, which solves the need to reduce or eliminate this error in the prior art for large-scale parts that require high-precision handling. The conventional method is to use high-precision splines or high-precision High-precision polygonal guide sleeves, these two structural parts are not easy to process, the structure is complex, the unsprung mass is increased, and the cost is high

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