Impact wrench and method for making same

Abstract

A socket wrench has an isometric body, whose cylindrical surface has a drive unit divided into two parts and a marker part between two parts of drive unit. In the drive unit the dense teeth and sparse teeth segments are alternative.

Description

【Technical field】 [0001] The present invention relates to a sleeve and its preparation method. 【Background technique】 [0002] At present, the external structure of the sleeve is very diverse, including: Taiwan New Patent No. 79204521 "multi-faceted sleeve", No. 87200032 "sleeve structure improvement", No. 87111279 "used for sleeve identification Inserts", No. 88211814 "Sleeve Structure Improvement", No. 90206762 "Sleeve Structure Improvement", No. 90208985 "Sleeve Improvement" and other cases, which were respectively granted patents for the external structural design of the sleeve. , the most traditional form is to emboss the outside of the sleeve to form a ring-shaped embossing structure on the outside of the sleeve to increase the friction effect. Such a structure needs to be improved due to its very limited friction effect. . All the above-mentioned cases are patented respectively by enlarging the plane outside the sleeve for tool clamping action, or forming integral o...

AI Technical Summary

Problems solved by technology

All the above-mentioned cases are patented respectively by enlarging the plane outside the sleeve for tool clamping action, or forming integral or segmented longitudinal lines outside the sleeve, among which, No. 88211814 "Sleeve Structure Improvement" ", which directly forms a concave-convex contact surface on the outside of the sleeve, and the sleeve structure of other cases is also to set a plane, an arc surface interval, or a continuous concave-convex tooth shape on the outside of the sleeve, or internal and external. The planar design of the multi-angle interval is the same or the arc surface of the corner end is equal, and no matter what kind of external structure it is, because its sleeve structure not only has the function of stopping the workpiece, but also has the function of being recognizable by the user. That is to say, on the surface of the sleeve, it is necessary to set the marking on the size or the printing of the trademark pattern. The above-mentioned sleeves are set on the surface, and most of the problems on the marking are not considered, and they cannot even be used for marking. There are actually improvements. necessary

[0003] And because of its poor design and structure, it is inconvenient in construction, that is, when the general shape is particularly complicated, it is done by casting, and in the way of casting, its structural strength is very limited, and it must be cast. After heat treatment to strengthen its rigidity, it is also done by forging, and the forged structure must have a large structural surface and an uncomplicated structure. The objects that can be processed are limited and cannot cover complex structural forms; and There is also a direct embossing structure. When such a structure is embossed, its outer diameter is pressed inward at a single point, so it is easy to cause deformation or even rupture of the processing part. If it is precision casting , its cost is too high, so it is necessary to improve

Images