A method and a grinding machine to implement the method includes, in a single clamping, a machine part is ground. The part is clamped on its ends and has an internal recess for grinding. The internal recess is ground with an internal grinding wheel, wherein the part is rotated between a workpiece headstock and a tailstock, and an external contour is ground by means of a grinding wheel. The part is held on the tailstock by a hollow tailstock sleeve, on the end region of the internal recess, and the internal grinding wheel passes through the hollow tailstock sleeve during grinding. In the grinding machine, a separate grinding spindle head carrying the internal grinding wheel can be included in the region of the tailstock, and can be advanced against the peripheral surface of the internal recess by passing through the hollow tailstock sleeve and the hollow center.

A method and a grinding machine to implement the method includes, in a single clamping, a machine part is ground. The part is clamped on its ends and has an internal recess for grinding. The internal recess is ground with an internal grinding wheel, wherein the part is rotated between a workpiece headstock and a tailstock, and an external contour is ground by means of a grinding wheel. The part is held on the tailstock by a hollow tailstock sleeve, on the end region of the internal recess, and the internal grinding wheel passes through the hollow tailstock sleeve during grinding. In the grinding machine, a separate grinding spindle head carrying the internal grinding wheel can be included in the region of the tailstock, and can be advanced against the peripheral surface of the internal recess by passing through the hollow tailstock sleeve and the hollow center.

The present invention relates to a size-adjustable online wheel deburring device, which comprises a synchronous clamping and rotating system and two brush adjustment systems which are in bilateral symmetry. When in use, the synchronous clamping and rotating system enables a wheel to rotate in a clamped state, and the diameter of the wheel is detected; driving cylinders enable spline shafts to rise so as to enable jacking blocks to be matched with gears II, and servo motors drive the gears II to rotate through synchronizing belts I; a left brush and a right brush are separately adjusted to appropriate positions through a left gear rack and a right gear rack; the driving cylinders enable the spline shafts to fall so as to enable the jacking blocks to be separated from the gears II; the servo motors drive flange brushes to rotate through the synchronizing belts I and synchronizing belts II; belt pulleys IV guarantee that the synchronizing belts II are always in a tensioned state after the left brush and the right brush are adjusted to the appropriate positions; oblique motors drive oblique brushes to rotate; and a drive motor I enables the brush adjustment systems which are in bilateral symmetry to rotate through a driving shaft, two lifting cylinders lift the wheel through guide posts, and the aim of deburring can be achieved when each brush is in contact with a back cavity of the wheel.

The present invention relates to a composite wheel deburring device, which is composed of a stand, servo motors, guide rails, a brush system I, a brush system II, and a synchronous clamping rotary system. During use, emphasis treatment can be performed on the rim corner burrs at the roots of the flanges of the wheel with various shapes and the rim corner burrs at the roots of the wheel rims.

A workpiece holding assembly comprises a magnetic chuck, and first and second separate sets of workrests for engaging with the outer circumferential surface of an annular workpiece. The workrests are configurable such that when the outer circumferential surface of the workpiece is ground with the chuck rotating in one direction, the outer circumferential surface is only urged in contact with the first set of workrests, and when an inner circumferential surface of said workpiece is ground with the direction of rotation of the chuck reversed, the outer circumferential surface is only urged in contact with the second set of workrests. Grinding methods using such a workpiece holding assembly are also described.

A workpiece holding assembly comprises a magnetic chuck, and first and second separate sets of workrests for engaging with the outer circumferential surface of an annular workpiece. The workrests are configurable such that when the outer circumferential surface of the workpiece is ground with the chuck rotating in one direction, the outer circumferential surface is only urged in contact with the first set of workrests, and when an inner circumferential surface of said workpiece is ground with the direction of rotation of the chuck reversed, the outer circumferential surface is only urged in contact with the second set of workrests. Grinding methods using such a workpiece holding assembly are also described.