A special-shaped inner hole honing head and its construction method

Abstract

The invention relates to a special-shaped inner hole honing head and a construction method thereof. The special-shaped inner hole honing head comprises a honing head body, oil stone bases, oilstone and an ejection mechanism. A plurality of positioning grooves are formed in the outer circumferential face of the honing head body. Each positioning groove is movably provided with one oil stone base. Each oil stone base is fixedly provided with at least one piece of oil stone. The ejection mechanism is arranged inside the honing head body and can provide force for outward motion for the upper ends and the lower ends of the oil stone bases. The outer ends of lifting pins of steps in the ejection mechanism abut against the oil stone bases through springs, radial flexible feeding of the oil stone is achieved, and it is ensured that the oil stone can be tightly attached to an irregularly-changing surface to be machined during honing. The special-shaped inner hole honing head is high in machining precision, simple in structure, low in manufacturing cost and convenient to maintain.

Description

technical field [0001] The invention relates to an inner hole grinding tool, in particular to a honing head for machining special-shaped inner holes and a construction method thereof. Background technique [0002] For some cylindrical parts, such as high-pressure oil cylinders for construction machinery, cylinder liners for engines, etc., the length-to-diameter ratio of the inner hole is large and the precision index of the working surface of the inner hole is higher, and some have the requirement of platform texture. Processing cannot be realized, and honing processing is often used at present. Honing can remove the machining allowance quickly and accurately, and ensure that the accuracy of the shape, position, and surface morphology of the inner hole meets the drawings and use requirements. [0003] The structure type of the honing head used in the existing honing process is relatively simple, and the honing process is relatively mature. The traditional honing head whets...

AI Technical Summary

Problems solved by technology

[0003] The structure type of the honing head used in the existing honing process is relatively simple, and the honing process is relatively mature

The traditional honing head whetstone seat, whetstone, etc. are arranged along the axis of the honing head, and the jacking device is also rigid, which is only suitable for honing the standard single-diameter cylindrical inner hole, and cannot hon special-shaped inner holes, such as drum-shaped and wavy and other inner holes, but these parts with special-shaped inner holes are more common in some products such as oil cylinders for special working conditions, special engine cylinder liners for military industry or locomotives, etc.

At present, the inner hole of this type of product can only be ground manually or with a forming grinding wheel, which has poor processing accuracy, low processing efficiency, and difficult to accurately control the surface quality. Moreover, this type of grinding cannot process a flat texture, making mass production difficult. , unable to meet the requirements of the drawing, affecting the performance of the product

After searching the literature of the prior art, it was found that none of them involved a grinding head structure and design method capable of honing special-shaped inner holes. The honing head that can realize fine honing and flat top honing at the same time only solves the problem that it is difficult to increase flat top honing on ordinary honing equipment; "a honing head" (see Chinese invention patent, publication number CN103495926A) relates to an adjustable The honing head of oilstone diameter can only realize the honing of different diameter standard inner holes; 1. The honing head on the surface of the inner hole on the special-shaped part with a relatively deep inner hole; "Adjustable honing head" (see Chinese invention patent, publication number CN101758453A) relates to a kind of whetstone whose outer diameter can be adjusted to adapt to cylinder bores of different cylinder diameters The honing head of processing; "piston ring outer surface platform texture honing technology" (referring to Chinese invention patent, publication number CN102039552A) relates to a kind of piston ring outer surface platform texture honing technology, has designed a kind of honing head of honing outer circle, Only the function of honing the outer circle of the circumference is realized

At the same time, the honing head involved in the above literature can only realize the honing of the inner hole or the outer circle of a single diameter, and cannot realize the honing of the special-shaped inner hole.

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