Rough milling of the end face of the dry cylinder liner body Rotary lever positioning device

Abstract

The invention relates to a rotary lever type locating device for end face rough milling of an engine body with a dry cylinder sleeve. The rotary lever type locating device comprises a clamp bottom plate. A sizing block is fixedly arranged on the clamp bottom plate. A support is arranged on the sizing block. The support is connected with a rotary lever through a rotary pin. An adjustable supporting rod is arranged at one end of the rotary lever through a locking nut and located above the sizing block and is parallel to the sizing block. The adjustable supporting rod is perpendicular to the rotary lever. The other end of the rotary lever is provided with a locating roller through another rotary pin. By the adoption of the rotary lever type locating device for end face rough milling of the engine body with the dry cylinder sleeve, the end face rough milling process of the engine body with the dry cylinder sleeve is optimized, the locating mode and the locating device of a special clamp for the end face rough milling process of the engine body with the dry cylinder sleeve are improved, correct locating is achieved, it is guaranteed that the wall thickness of the cylinder sleeve machined through the follow-up cylinder sleeve boring process is even, the machining quality of the engine body is improved, the rejection rate of machining is reduced, and the economic benefit of an enterprise is improved.

Description

technical field [0001] The invention relates to a positioning device, in particular to a positioning device related to a special fixture for the end face rough milling process in the machining process of a diesel engine dry cylinder liner body. Background technique [0002] The processing of the diesel engine body is arranged according to the process principle of face first and hole later, and the cylinder liner hole is required to be positioned on the end face and side of the body to ensure that the wall thickness of the cylinder liner is uniform and the deviation is controlled within the accuracy range. [0003] The positioning of the existing rough milling process of the end face of the body adopts the alignment of the engraved lines on the outer surface of the two ends of the body, and the end face is milled. During the casting and forming process of the body blank, the combination of the water jacket mud core and the main body core of the cylinder barrel (the gap betwee...

AI Technical Summary

Problems solved by technology

During the casting and forming process of the body blank, the combination of the water jacket mud core and the main body core of the cylinder barrel (the gap between the two is cast to form the wall thickness of the cylinder liner) goes down to the body casting sand box ( Casting to form the outer side of the machine body, with knife-setting marking lines), the existence of sand core manufacturing errors, core assembly errors, assembly errors, and casting process errors will cause large position errors between the outer marking lines of the machine body and the cylinder liner, resulting in The wall thickness formed by subsequent cylinder liner boring is uneven, and even the cylinder liner wall may be bored through; it shows that the existing machine body end milling process is unreasonable and the positioning method is not accurate

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