Method for grinding convex running faces and outside diameters on shaft-like workpieces in one set-up and grinding machine for carrying out the method
AssigneeErwin Junker Maschinenfabrik GmbH
InventorErwin Junker
Life of this patent
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Abstract
The invention relates to a method for grinding convex running surfaces and exact outside diameters on undulated workpieces. In a clamping, a first convex running surface is ground on a discoid partial section of an undulated workpiece during a first grinding operation while using a first grinding wheel that comprises at least one concave lateral surface. A second grinding wheel is used to grind a desired outside diameter on the discoid partial section as well as on other partial sections of the undulated workpiece during a second grinding operation.
Claims11
A method of grinding outside diameters and other surfaces on a workpiece which may be carried out in one set-up, the workpiece having elongated dimension and including a relatively larger diameter section, the method comprising:
- grinding a convex running face on the relatively larger diameter section of the workpiece with a first grinding wheel having at least one concave side face;
- and
- grinding a desired outside diameter on the relatively larger diameter section of the workpiece and other sections of the workpiece with a second grinding wheel.
A grinding machine, comprising:
- a machine bed having a grinding table in a front region of the machine bed, the grinding table being adapted for a feed movement of a workpiece along a Z-axis;
- a rotationally driven work headstock and a tailstock arranged in alignment on the grinding table on a common longitudinal axis, the work headstock having a rotationally driven work spindle which is provided in a front region thereof with a work holder comprising a center, the tailstock having a tailstock spindle which is provided with a tailstock center at an end on the workpiece side;
- and
- a grinding headstock arranged in a rear region of the machine bed and being mounted on a guide carriage, the guide carriage being equipped with an infeed drive which effects an infeed movement in an X-axis relative to the workpiece, the guide carriage being hydrostatically mounted on guides and being oriented at right angles to a longitudinal axis of the workpiece, the grinding headstock comprising two arms which in each case have, at an end thereof, grinding spindles whose verticals starting in a plane from their longitudinal axes intersect at an angle α at a pivot axis of the two arms, and said grinding spindles having a first and second grinding wheel, respectively, the first grinding wheel having at least one concave side face contactable with a section of the workpiece for grinding a convex running face thereon, steadyrests being provided for suppoting the workpiece, and the tailstock spindle being hydraulically axially displaceable.
A method of grinding outside diameters and other surfaces on a workpiece which is of elongated dimension and includes at least one disk-shaped section of relatively larger diameter than a remainder of the workpiece, the method comprising:
- grinding a convex running face on the disk-shaped section of the workpiece by contact there with a concave side face of a first grinding wheel, the concave side face being arranged orthogonally to a rotational axis of the first grinding wheel;
- and
- grinding a desired outside diameter on the disk-shaped section and other sections of the workpiece with a second grinding wheel.
Dependencies are inferred from the claim text.