Hydraulic gear grinding clamp capable of rapidly replacing large-size workpieces and clamping method of hydraulic gear grinding clamp

Abstract

The invention provides a hydraulic gear grinding clamp capable of rapidly replacing large-size workpieces and a clamping method of the hydraulic gear grinding clamp. The hydraulic gear grinding clamp comprises an oil cylinder base, a sliding ring, a supporting ring, an elastic expanding sleeve, a conical central spindle, a connecting plate, a connecting shaft, a dense ball guiding sleeve, a centering seat and a piston. The oil cylinder base is mounted on a rotary table surface. The sliding ring and the oil cylinder base form two independently sealed annular oil cavities by being matched in the radial direction, and the oil cavities correspond to oil inlets A and B respectively. Oil channels are formed in the oil cylinder base, correspond to the oil inlets A and B respectively and lead to an upper oil cavity and a lower oil cavity of the piston respectively. The conical central spindle is connected with the piston into a whole through the connecting plate and the connecting shaft. The dense ball guiding sleeve is mounted between the centering seat and the conical central spindle. The elastic expanding sleeve is mounted by being coaxial with the conical central spindle and fixed to the upper end of the oil cylinder base. According to the hydraulic gear grinding clamp capable of rapidly replacing the large-size workpieces and the clamping method of the hydraulic gear grinding clamp, hydraulic oil drives the piston to drive the conical central spindle to squeeze and loosen the elastic expanding sleeve so as to achieve clamping and loosening actions of the workpieces, large-size gears can be rapidly and automatically clamped, the machining efficiency is improved, and the automation level of a machine tool is raised.

Description

technical field [0001] The invention relates to a gear grinding fixture for a gear grinding machine, in particular to a gear grinding fixture for a large-sized disc-shaped cylindrical gear. Background technique [0002] The rapid development of industries such as wind power, marine equipment, and military industry requires a large number of large-scale, high-precision hardened gears. For gears with the same specification and large batches, in order to improve the processing efficiency, in addition to using high-efficiency machine tools, it is necessary to be equipped with grinding fixtures that can quickly replace and clamp the gears. [0003] The current gear grinding fixtures mostly use manual positioning and clamping. On the one hand, the clamping force relies on manual adjustment, which is highly random, and it is difficult to ensure reliable clamping of large-sized workpieces; Requirements for mass processing of specification gears. At the same time, the clamping elem...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of fast and accurate automatic clamping in the batch processing of large-scale disc gears, and to provide a hydraulic gear grinding fixture and its clamping method that can quickly replace large-scale workpieces (such as disc gears)

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