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US 10,766,114 B2Granted
Method and system for grinding the exterior of shaft parts between tips
AssigneeErwin Junker Grinding Technology A.S.
InventorErwin Junker
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AssigneeErwin Junker Grinding Technology A.S.
InventorErwin Junker
Estimating the term…
A system and method for grinding the exterior of a shaft part with rotationally symmetrical sections and bases which have centering bores and which define a reference longitudinal axis and rotational axis of the shaft part. The shaft part is held between tips which engage into the centering bores during the grinding process using a grinding disk, and the shaft part is additionally supported on the rotationally symmetrical sections by means of a support device. The current diameter values of the rotationally symmetrical sections are measured and transmitted to a controller, by means of which the support device is updated with respect to the measured diameter values while continuously supporting the rotationally symmetrical sections until target dimensions are achieved.
A method for grinding the exterior of a shaft part with rotationally symmetrical sections and end surfaces into which centering bores have been introduced, which bores define a reference longitudinal axis and rotational axis of the shaft part, wherein during grinding, up to the end of finishing grinding by means of a grinding disk, the shaft part is held between tips that engage into the centering bores, and supported on the rotationally symmetrical sections by means of a support device with a first and a second support unit, wherein the shaft part is disposed between the grinding disk and a first support unit of the support device, and a measurement device is an in-process measurement device and measures diameter values of the rotationally symmetrical sections of the shaft part, transmits these measurement values to a controller, and this controller, on the basis of these measurement values, actively updates setting of the grinding disk with respect to the measured diameter values, and updates the support device, continuously supporting the rotationally symmetrical sections, all the way to the finished dimension of the shaft part, wherein the support device, as the first support unit, has a support disk or a contact ruler, and the second support unit has a contact ruler being configured as a support rail having separate support regions and is set against the shaft part by two drives, each CNC-controlled.
A system composed of a grinding machine and a shaft part, for grinding the exterior of the shaft part, with rotationally symmetrical sections and end surfaces with centering bores introduced into them, which bores define a reference longitudinal axis and rotational axis of the shaft part, with a grinding disk that is disposed on a grinding spindle and is rotationally driven by way of a CNC axle, with a workpiece headstock having a first tip, and a tailstock having a second tip, wherein the shaft part is driven so as to rotate, by means of the first and second tip, during grinding, about a reference longitudinal axis defined in this way, and permanently held, wherein a support device having a first and a second support unit, which are adjustable relative to one another, and a measurement device are provided, by means of which measurement signals of the current diameter of the rotationally symmetrical section of the shaft part can be passed on to a controller, and on the basis of which the first and the second support unit can constantly be updated with respect to the current diameter of the rotationally symmetrical section, all the way to the finished dimension, in such a manner that the shaft part is doubly supported by means of the support units that lie opposite the grinding disk, and by means of the tips that are constantly in engagement, wherein the first support unit is a support disk or a contact ruler, and the second support unit is a contact ruler being configured as a support rail having separate support regions and is set against the shaft part by two drives, each CNC-controlled.
Dependencies are inferred from the claim text.