A special fixture for turning of automobile rear brake drum

Abstract

The invention provides a special clamp for turning a rear brake drum of an automobile. The special clamp comprises a rotary disk; five screw holes and one counterbore are formed in a bearing block, the bearing block is fixed to the right end face of an adjustment arm through bolt connection and tightening connection, both the front and rear parts of the middle of the bearing block are protruding,and thus the thicknesses of the left and right ends of the bearing block are smaller than that of the middle; a first gland is of a stepped shaft structure, counterbores are formed in the first glandfrom right to left and are in interference fit with blind holes in the left end face of a connection block, and the first gland, the connection block, the bearing block and the adjustment arm are fixed together through inner hexagon screws. In the special clamp for turning the rear brake drum of the automobile, an important connection relationship is a double connection mode of bolt connection andtightening connection, thus component connection is prevented from loosening, and the special clamp is long in service life, high in strength, applicable to clamping of hydraulic chucks of various types at the same time and wide in lathe application range; outer circle fixing serves as a main fixing method, feeding of a turning tool in the rear brake drum is not influenced, machining interferencecannot be generated, and the tool cannot be damaged.

Description

technical field [0001] The invention belongs to the technical field of machine tool fixtures, and more specifically relates to a special fixture for turning a rear brake drum of an automobile. Background technique [0002] When processing the rear brake drum of an automobile, there are a large number of vertical lathes for processing, so it is necessary to make a jig to fix the rear brake drum to complete the turning process. [0003] For example, the Chinese patent with application number CN201310673253.0 discloses a hydraulic chuck fixture for brake drum processing, which belongs to the technical field of brake drum processing fixtures. It is composed of a chuck body, a base point block and an automatic centering deck. Six base point blocks and self-centering decks are alternately installed on the chuck body; a base point screw is installed on the base point block; The rotating beam is composed of a beam rotating shaft, two claw rotating shafts, two gaskets and two claws....

AI Technical Summary

Problems solved by technology

[0008] In order to solve the above-mentioned technical problems, the present invention provides a special fixture for the turning processing of the rear brake drum of the automobile to solve the problems that the existing application range is small, the turning processing interferes, and the cutting tool is easy to be damaged.

Images