Machining method for gear ring type product

Abstract

The invention discloses a machining method for a gear ring type product. In order to achieve machining of the gear ring type product, an auxiliary clamp is adopted, and the auxiliary clamp structurally comprises a pull rod, a transition disc, a positioning shaft, a positioning disc and a spring sleeve, wherein the spring sleeve is fixed to the upper end of the pull rod, the transition disc, the positioning shaft and the positioning disc are coaxially arranged from bottom to top, and the pull rod penetrates through the centers of the positioning disc, the positioning shaft and the transition disc. The method for machining the gear ring type product by adopting the auxiliary clamp comprises the following steps that an existing clamp with elastic core shaft positioning and end surface pressing is used for roughly turning an outer circle firstly; then, a vertical numerical control lathe is used, the used auxiliary clamp is installed on a spindle of the lathe to carry out finish turning onan outer circle and an inner hole of the gear ring type product, and the roundness of the outer circle subjected to finish turning treatment is controlled within 0.05 mm; and finally, a clamp spring groove and a step are cut to complete product machining. The clamp is simple in structure, low in manufacturing cost and convenient to use, ensures the quality of the machined product, and improves theproduction efficiency.

Description

technical field [0001] The invention specifically relates to a processing method for ring gear products. Background technique [0002] At present, although there are many domestic manufacturers that can produce similar products for the planetary gears of the planetary reduction mechanism used in the sub-boxes of heavy-duty gearboxes, the existing processing methods are: the first process is to rough the outer circle first; the second process is to The existing soft-jaw tooling is used, and the inner hole and end face are fine-turned on a horizontal lathe; the tooling used in the third process is also a soft-jaw tool, and the outer circle and end face are fine-turned on a horizontal lathe. [0003] However, this type of ring gear product has thin wall thickness, large external dimensions, and the weight of the part weighs more than ten kilograms. It has high inertia in high-speed cutting and is easy to shake. The product requirements are very high. The outer roundness, inner ...

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Problems solved by technology

[0003] However, this type of ring gear product has thin wall thickness, large external dimensions, and the weight of the part weighs more than ten kilograms. It has high inertia in high-speed cutting and is easy to shake. The product requirements are very high. The outer roundness, inner hole roundness, The coaxiality must reach 0.02 mm. If a horizontal machine tool is used, the coaxiality must be guaranteed by the beating of the fixture. If the fixture cannot be guaranteed, it will be easily deformed after machining. It is difficult to guarantee product quality during production, and the scrap rate is high.

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