Honing netting crack processing control method

Abstract

The invention provides a honing netting crack processing control method. A honing head has different accelerations in four acceleration and deceleration stages within a reciprocating cycle and honingsticks are controlled to feed by speed. A primary processing course comprises primary rough honing, honing stick returning, secondary rough honing and finishing of rough honing. The distance between two adjacent honing sticks is as same as the one-stroke rotating distance of the honing stick. According to the honing netting crack processing control method provided by the invention, the honing sticks are controlled to feed by speed, so that the problem that the cutting pressure is affected by a contact area of the honing sticks and a workpiece in fixed pressure control is avoided. Meanwhile, bymatching different accelerations with honing stick distribution, netting crack angle, stroke distance and rotating speed reasonably, the honing netting crack at a reversing position is straightened.

Description

technical field [0001] The invention relates to the technical field of honing, in particular to a method for controlling honing texture processing. Background technique [0002] In the batch honing process of engine cylinder block and cylinder liner inner hole, the dimensional tolerance range of the same product before honing and after honing is very small. The fluctuation range of groove index is small. [0003] When honing the same product, under the condition that the pre-honing size, honing allowance, reciprocating speed, spindle speed, and auxiliary actions are the same, the factor that determines the fluctuation range of the honing beat is the cutting pressure. Keeping the cutting pressure stable will ensure that the honing beat and net The groove index can also remain stable. During honing, since the contact area between the sand bar and the workpiece is variable, under the constant pressure feed control of the sand bar, when the gravel becomes blunt and the surface...

AI Technical Summary

Problems solved by technology

[0005] The present invention solves the problem that in the normal processing stage of constant-pressure feed in the prior art, the cutting pressure is affected by the contact area between the sand bar and the workpiece, which leads to unstable texture groove depth indicators, and non-coincidence of mesh patterns at the reversing position, and To solve the problem of asymmetric grain distortion, provide a honing texture processing control method, which can obtain stable honing beat and texture groove depth, and the removal of the workpiece allowance is triangular, thus obtaining a higher geometry than constant pressure feed. At the same time, it can realize the coincidence of the stop position of the sand bar at the upper and lower reversing positions of the sand bar, and correct the reticulate shape at the reversing position, so that the processed reticulate pattern is neat and beautiful, and the ideal reticulate shape is achieved.

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