Rough turning fixture for disc type gear

Abstract

The invention discloses a rough turning fixture for a disc type gear. The rough turning fixture comprises a flange disc, a mandrel, a pulling rod, a rubber ring and a plurality of sliding blocks; oneend of the flange disc is connected with a machine tool, and the other end of the flange disc is connected with the mandrel; the other end of the mandrel is a part installing and clamping end, and a pulling rod installing hole is formed in the part installing and clamping end, and the diameter of the pulling rod installing hole is gradually increased in the direction away from the flange disc; sliding block installing holes with the number same as the number of the sliding blocks are evenly formed in the side wall of the pulling rod installing hole; the sliding blocks are arranged in the sliding block installing holes and can move up and down in the sliding block installing holes; the rubber ring is arranged in a pulling rod installing hole groove which is formed in the outer side of the pulling rode installing hole in a sleeving mode, and the rubber ring is connected with sliding block grooves formed in the top ends of the sliding blocks; one end of the pulling rod is a circular truncated cone end, and the other end of the pulling rod is connected with the machine tool; the circular truncated cone end of the pulling rod is located in the pulling rod installing hole; and the bottomends of the sliding blocks are attached to the outer surface of the pulling rod circular truncated cone end. The rough turning fixture for the disc type gear is wide in clamping range and low in cost, significantly improves the machining quality and efficiency of rough turning molding, and provides guarantee for subsequent gear machining.

Description

technical field [0001] The invention belongs to the field of gear processing, and relates to a fixture for rough turning of disc gears. Background technique [0002] The rough turning forming of transmission disc gears is an important process of gear processing, which directly determines the size of the finishing process, and then affects the processing quality of all subsequent processes. It is very important to ensure the quality of rough turning forming of transmission disc gears. [0003] In order to ensure the processing quality and processing efficiency of the finishing car, the gears of the transmission disc must first be processed by rough turning after the blank is fed. The machining allowance of rough turning is large, especially for free forging blanks, the machining allowance is 2-3 mm, the cutting resistance is large, it is easy to rotate during the machining process, and there are safety hazards of positioning failure and falling off. The cost of the expansion...

AI Technical Summary

Problems solved by technology

The machining allowance of rough turning is large, especially for free forging blanks, the machining allowance is 2-3mm, the cutting resistance is large, it is easy to rotate during the machining process, and there are hidden dangers of positioning failure and falling off.

The cost of the expansion sleeve fixture used in the finishing car is high, the expansion range is limited, and it is easy to enter iron chips, which affects the stability of the processing and the processing efficiency cannot be guaranteed.

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