Method for producing rotationally symmetrical, non-cylindrical bores with a honing tool, and honing machine which is designed and equipped for making a cylindrical bore into a conical bore
AssigneeGehring Technologies GmbH + Co. KG
InventorsKlaus Litty, Andreas Wagner, Manuel Waiblinger, Andreas Wiens, Niko Schamne, Markus Petraschek
Life of this patent
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Abstract
A method is proposed for honing conical bores.
Claims37
A method for producing a rotationally symmetric, non-cylindrical bore using a honing tool comprising the following steps:
- honing of the bore with a stroke of the honing tool, wherein the stroke (H) is limited by an upper reversal point (OP) and a lower reversal point (UP) (H=OP−UP),
- permanent detection of the actual diameter (DIST) of the bore, which varies over the length of the bore to be machined during the honing process in a region between the reversal points (OPn, UPn) of the honing bars of the honing tool.
- permanent comparison of the actual diameter (DIST) of the bore to the specified target diameters DSOLL (OPn, UPn) for at least one of the reversal points (OPn, UPn) and
- permanent limitation of the stroke (H) to the region or regions (L-b) of the bore in which the actual diameter (DIST) is smaller than the target diameter (DSoll (L-b);
- wherein the stroke (H) of the honing tool is reduced step-by-step corresponding to the measured actual values of the diameter (DIST) of the bore, so that it is still only the regions (L-b) of the bore that are machined in which the actual diameter (DIST) of the bore is still smaller than the target diameter corresponding to the measured actual values of the diameter (DSoll).
A honing machine that is designed and arranged for conifying a non-cylindrical bore using a honing tool, wherein the conifying comprises the following steps:
- Means for honing of the bore with a stroke (H=OPn−UPn;
- where n=1 to m),
- Means for detecting the actual diameter (DIST) of the bore during the honing process in a region between the reversal points (OPn, UPn) of the honing bars of the honing tool.
- Means for comparing the actual diameter (DIST) of the bore to the specified target diameters DSOLL (OPn, UPn) in at least one of the reversal points (OPn, UPn) and limitation of the stroke (H) to the region or regions (L-b) of the bore in which the actual diameter (DIST) is smaller than the target diameter DSOLL (L-b);
- wherein the stroke (H) of the honing tool is reduced step-by-step corresponding to the measured actual values of the diameter (DIST) of the bore, so that it is still only the regions (L-b) of the bore that are machined in which the actual diameter (DIST) of the bore is still smaller than the target diameter corresponding to the measured actual values of the diameter (DSoll).
A workpiece having a conified bore, characterized in that the conifying of the bore was carried out using a honing tool that comprises honing bars whose length is less than ⅓ of the length (L) of the bore to be machined and conifying the bore comprises:
- Means for honing of the bore with a stroke (H=OPn−UPn;
- where n=1 to m),
- Means for detecting the actual diameter (DIST) of the bore during the honing process in a region between the reversal points (OPn, UPn) of the honing bars of the honing tool.
- Means for comparing the actual diameter (DIST) of the bore to the specified target diameters DSOLL (OPn, UPn) in at least one of the reversal points (OPn, UPn) and
- Means for limiting the stroke (H) to the region or regions (L-b) of the bore in which the actual diameter (DIST) is smaller than the target diameter DSoll (L-b));
- wherein the stroke (H) of the honing tool is reduced step-by-step corresponding to the measured actual values of the diameter (DIST) of the bore, so that it is still only the regions (L-b) of the bore that are machined in which the actual diameter (DIST) of the bore is still smaller than the target diameter corresponding to the measured actual values of the diameter (DSoll).
A workpiece having a conified bore, characterized in that, when conifying the bore, the stroke (Hn) is reduced to a stroke (Hn+1) if the actual diameter (DIST, n) is equal to the target diameter (DSOLL, n (OPn, UPn) for at least one reversal point (OPn, UPn) and that the honing bars of the honing tool having the reduced stroke (Hn+1) no longer machine the point or the region (OPn, UPn).
Dependencies are inferred from the claim text.