Tooling and grinding method thereof

Abstract

The invention relates to a special tooling for grinding a product. The special tooling comprises a core shaft which is formed by integral fixed connection of a plurality of stations. The stations are cylindrical stations which are axially distributed along the core shaft and extend radially along the core shaft, and the outer diameters of the stations are reduced gradually; the stations comprise a fastening station, a dressing-grinding wheel clamping station, a dressing-grinding wheel locking station, a grinding-wheel retracting station, a product clamping station and a product locking station.. The invention also relates to a grinding method of the tooling. The method adopted for processing a thin-wall ring product has the characteristics of high resetting accuracy, stability and long service life. The invention has the advantages that the assembly and the disassembly of the product are convenient, the one-time qualification rate and the processing efficiency can be obviously increased, and the accuracy requirement for batched grinding of high-accuracy thin-wall ring products is better met.

Description

technical field [0001] The invention relates to a tooling for mechanical processing equipment, especially a grinding tool for thin-walled rings (sleeves, cylinders, cylinders), especially a grinding tooling for hard alloy thin-walled rings (sleeves, cylinders, cylinders). The invention also relates to a grinding method using such a tool. Background technique [0002] In machining, ring-shaped (sleeves, cylinders, cylinders) parts whose wall thickness to diameter (outer ring diameter) ratio is less than 1 / 6 are usually called thin-walled parts. In the machining method of thin-walled rings, in order to obtain higher dimensional and geometric tolerance requirements, such as the coaxiality of the inner and outer rings≤0.008mm, surface roughness≤Ra0.2, grinding machines are usually used. In order to ensure the radial runout of the product, the micro-tapered mandrel positioned at both ends is usually used to penetrate the inner ring of the thin-walled product, and the product is ...

AI Technical Summary

Problems solved by technology

In order to ensure the radial run-out tolerance of the product, the mandrel can only clamp one product at a time, and each product is not at the same position of the micro-taper mandrel, and can only be adjusted manually, which reduces the processing efficiency

[0005] (3) When the product is processed through the micro-cone mandrel, in order to realize the natural fastening of the inner ring of the thin-walled ring and the mandrel, the inner ring and the mandrel must be closely fitted, so that stress concentration occurs at right angles around the inner ring. Under the action of the impact force of the outer circle, the right-angled edge of the inner ring is easy to drop, resulting in waste products, and the broken scraps are likely to cause injury to the operator

However, such grinding wheel dressing steps not only increase the dressing time, but also affect the reset accuracy of the tailstock tip, and ultimately affect the coaxiality of batch products

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