Power chuck for turning hub

Abstract

The invention provides a power chuck for turning a hub which comprises a chassis, an upper plate, a support ring, a support guide rod, a pressing claw compression connecting rack, a central positioning rack, an axial compressing mechanism, a radial automatic positioning mechanism, a driving cylinder connecting shaft, a spring and the like. The power chuck has the characteristics that the annular conical support structure is adopted, so that the overall weight of the power chuck for turning the hub is greatly reduced, the main shaft load of a machine tool is reduced, the overhaul period and service life of the machine tool are prolonged and the utilization ratio of the machine tool is improved; furthermore, the rotation speed of the main shaft of the machine tool is favorably increased, so that the processing time of each hub can be shortened and the production efficiency is improved.

Description

technical field [0001] The invention relates to a power chuck for wheel hub turning, which belongs to the field of wheel hub machining tooling equipment. Background technique [0002] With the rapid increase of car ownership and the acceleration of car replacement, the demand for car wheels is also increasing sharply. It is the wheel hub manufacturers' consistent The pursuit of the wheel hub turning power chuck has an important impact on the wheel hub processing time, positioning accuracy, machine speed, machine tool maintenance cycle, and the production efficiency and production cost of the wheel hub. It is the key tooling equipment for wheel hub processing. [0003] The power chuck for wheel hub turning requires the hub to be automatically centered and positioned after the hub is placed in the station, and quickly pressed. During processing, the power chuck and the clamped hub rotate at high speed together. After processing, it must be released quickly to facilitate unload...

AI Technical Summary

Problems solved by technology

At present, there are mainly two types of support structures for power chucks used in wheel hub turning. One is that the support ring cylinder is supported on the outer ring of the upper plate, and the upper plate forms a closed oblate cylinder structure with the support ring cylinder and the chassis. One form is introduced in the patent CN102205428A. The other is that the support ring cylinder is supported in the ring position in the middle of the upper plate, that is, the central axis of the upper plate coincides with the central axis of the support ring cylinder, and the diameter of the upper plate is larger than the outer circle of the support ring cylinder. Diameter, it is a non-closed structure, please refer to the attached drawing of the manual for details figure 1 As shown, the power chucks of these two supporting structures are overall heavy. During processing, the chuck and the hub rotate together at high speed, and the load is heavy, which has a great adverse effect on the service life of the machine tool spindle bearing. It will be overhauled in two years, and it is difficult to further increase the spindle speed, which will affect the machining efficiency of the machine tool

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