Movable shaft head assembly

Abstract

The invention discloses a movable shaft head assembly. The movable shaft head assembly comprises a movable pressing sleeve and a movable shaft head, wherein the movable shaft head comprises a shaft head top part, a shaft head middle part and a shaft head lower part which are fixedly connected from top to bottom, a through hole is formed in the top of the movable pressing sleeve, the shaft head toppart comprises a first cylinder part, a frustum part and a second cylinder part which are fixedly connected from top to bottom, the first cylinder part, the frustum part and the second cylinder partare concentrically arranged, the bottom surface area of the second cylinder part is larger than that of the first cylinder part, the diameter of the upper surface of the frustum part is the same as that of the bottom surface of the first cylinder part, the diameter of the lower surface of the frustum part is the same as that of the bottom surface of the second cylinder part, the first cylinder part stretched out of the through hole, a compression spring set is arranged between the shaft head middle part and the inner side of the top of the movable pressing sleeve, an elastic check ring for a hole is arranged at the bottom of the movable pressing sleeve, and the lower part of the shaft head extends out of the elastic check ring for the hole. According to the movable shaft head assembly, theproblem of eccentricity of a spool after long-term use and large-bore grinding and opposite-jacking clamping is effectively solved.

Description

technical field [0001] The invention relates to a shaft head assembly, in particular to a movable shaft head assembly. Background technique [0002] In the past, we used cylindrical shaft heads, such as Figure 1-3 , the size and shape of the cylindrical shaft head cannot be changed, but in the actual production process, we found that when the inner hole of the I-shaped wheel is worn for a long time, after the I-shaped wheel is clamped to the top, it will be eccentric and move, so that the When rotating, if it is unbalanced, there will be too much shaking, which will affect the quality of the product. So the engineer directly changed the cylindrical shaft head into a conical shaft head, but during the jacking process, the tapered shaft head is in line contact with the inner hole of the I-shaped wheel, and other surfaces are not in contact, so that during the jacking process , the I-shaped wheel will be tilted, and it is impossible to perform accurate top clamping work. Co...

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Problems solved by technology

[0003] In order to solve the problem of eccentric movement after clamping the top of the I-shaped wheel after long-term use and grinding of the inner hole, the invention provides a movable shaft head assembly to solve this problem

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