Honing method and honing machine

Abstract

A honing processing technology for making uniform the load applied to honing grindstones by cooperating the reciprocal motion of the honing grindstones with the feeding and expanding motion at high precision by a specified relation. Servo motors are used as drive sources respectively for spindle reciprocal drive part and grindstone depth cutting part, and these two servo motors are mutually cooperated, and the feeding and expanding motion of the honing grindstones is controlled to be synchronized and tuned with the ascending and descending (reciprocal) motion of the honing tool so that the processing load applied to the honing grindstones may be averaged. Hence, without modifying the basis existing mechanical elements, the load applied to the honing grindstones may be averaged, and the honing process may be stabilized in precision and enhanced in precision.

Description

technical field [0001] The present invention relates to a honing method and a honing machine, and more particularly to a honing technique in which honing is performed while a honing stone is fed to the inner periphery of a workpiece at a mechanically cut specific depth in a forced manner. Background technique [0002] Honing processing is known as a processing method for finishing the inner periphery of a workpiece into a mirror-smooth surface. In this honing process, the honing stone and the workpiece are set in a relatively floating state, and the honing stone is driven by rotational motion and reciprocating motion, and the honing stone is stretched by the repulsive force of the spring to precisely finish the inner circumference of the workpiece . [0003] In the conventional honing process, the honing stone is pressed against the workpiece by a certain force (spring repulsive force), and the inner circumference of the workpiece is gradually cut off, but recently, as in t...

AI Technical Summary

Problems solved by technology

[0007] That is, theoretically, the feeding and stretching motions are controlled in such a way that an extension command of the honing stone is input (in each reciprocating stroke of the honing stone). Figure 8 In the case of the case, the extension command is input at the middle position of the lowering stroke of the honing stone), but actually, when the extension command of the honing stone is input, structurally, the movement delay (time lag) of the honing stone occurs, and it It does not specify where in a stroke the honing stone is extended (inward feed)

[0008] In such ordinary grindstone depth cutting control, by correlating the feed and extension motions (depth setting timing, depth setting speed, and depth of cut) of the honing grindstone with the reciprocating motion of the honing grindstone, when the honing grindstone is fed When stretching and stretching, a sudden load may be applied to the honing stone, or the load on the honing stone may not be stable, but may fluctuate significantly, and the abrasive grains of the honing stone may fall off too much, which is not good for the honing stone. It is always an ideal state, so it needs to be greatly improved from the viewpoint of the stability of honing accuracy or the improvement of accuracy

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