The invention concerns a method for machining a workpiece (1) by a grinding machine, comprising the step of rotating and translating the workpiece along a first axis (4) toward the first abrasive wheel; rotating an abrasive wheel (6) around a second axis (61) and translating it along a third axis (62) such that the abrasive wheel grinds a peripheral portion (103) of the workpiece; the abrasive wheel being positioned in a position in translation along the third axis; and wherein the position in translation is determined as a function of a position and of an angular position of the workpiece around the first axis. The invention further related to a grinding machine for carrying out such method.

The invention concerns a method for machining a workpiece (1) by a grinding machine, comprising the step of rotating and translating the workpiece along a first axis (4) toward the first abrasive wheel; rotating an abrasive wheel (6) around a second axis (61) and translating it along a third axis (62) such that the abrasive wheel grinds a peripheral portion (103) of the workpiece; the abrasive wheel being positioned in a position in translation along the third axis; and wherein the position in translation is determined as a function of a position and of an angular position of the workpiece around the first axis. The invention further related to a grinding machine for carrying out such method.

There is disclosed a grinding method of a honeycomb structure, wherein a grind processing member having an outer peripheral surface, a first grinding wheel tapered surface and a second grinding wheel tapered surface and rotating around a central axis grinds a joined honeycomb segment assembly rotating around a central axis, and the above respective surfaces of the grind processing member form a first ground region, a second ground region, a center ground surface, a first tapered surface and a second tapered surface, to prepare the honeycomb structure including a cylindrical honeycomb base material, and a ring-like bulge portion which surrounds an outer periphery of the honeycomb base material, protrudes from the outer periphery of the honeycomb base material toward the outside in a flange manner, and has the first tapered surface, the second tapered surface and the center ground surface.

There is disclosed a grinding method of a honeycomb structure, wherein a grind processing member having an outer peripheral surface, a first grinding wheel tapered surface and a second grinding wheel tapered surface and rotating around a central axis grinds a joined honeycomb segment assembly rotating around a central axis, and the above respective surfaces of the grind processing member form a first ground region, a second ground region, a center ground surface, a first tapered surface and a second tapered surface, to prepare the honeycomb structure including a cylindrical honeycomb base material, and a ring-like bulge portion which surrounds an outer periphery of the honeycomb base material, protrudes from the outer periphery of the honeycomb base material toward the outside in a flange manner, and has the first tapered surface, the second tapered surface and the center ground surface.

Grinding a rod-shaped welding electrode includes forming a contact line at a contact surface region of a rotating grinding tool, moving the rotating grinding tool and the welding electrode relative to one another in order to grind a surface of the welding electrode, pressing the welding electrode in an axial direction against an abrasive contact surface region of the rotating grinding tool, and, during relative movement between the rotating grinding tool and the welding electrode, moving the rotating grinding tool along a curved path in a plane of movement which extends transversely to the contact line and which includes a longitudinal axis of the welding electrode. A holder for the rotating grinding tool is arranged on a coupler mechanism which is provided with two actuating drives enabling the holder to be moved to any point within an operating range of a plane of movement.

Grinding a rod-shaped welding electrode includes forming a contact line at a contact surface region of a rotating grinding tool, moving the rotating grinding tool and the welding electrode relative to one another in order to grind a surface of the welding electrode, pressing the welding electrode in an axial direction against an abrasive contact surface region of the rotating grinding tool, and, during relative movement between the rotating grinding tool and the welding electrode, moving the rotating grinding tool along a curved path in a plane of movement which extends transversely to the contact line and which includes a longitudinal axis of the welding electrode. A holder for the rotating grinding tool is arranged on a coupler mechanism which is provided with two actuating drives enabling the holder to be moved to any point within an operating range of a plane of movement.

A method for manufacturing a rotor includes the following operations: the clamping of a workpiece in a grinding machine; the performance of one or more cylindrical grinding operations whereby a rotor shaft section is ground to the desired diameter with a cylindrical grinding disk; the performance of one more profile grinding operations whereby a rotor body is profiled with a profile grinding disk. During the manufacture of the rotor in the grinding machine, the workpiece is not undamped and the cylindrical grinding operations and the profile grinding operations are done with the same grinding machine.

A method for manufacturing a rotor includes the following operations: the clamping of a workpiece in a grinding machine; the performance of one or more cylindrical grinding operations whereby a rotor shaft section is ground to the desired diameter with a cylindrical grinding disk; the performance of one more profile grinding operations whereby a rotor body is profiled with a profile grinding disk. During the manufacture of the rotor in the grinding machine, the workpiece is not undamped and the cylindrical grinding operations and the profile grinding operations are done with the same grinding machine.

The method comprises the following phases: supply of one petal to be regenerated (1) comprising: one hole (2) defining an axis of rotation (R1) around which the petal to be regenerated (1) is movable between an opening position, wherein it defines a passage opening, and a closure position; a first worn surface (5) defining part of the passage opening; a second worn surface (6) contiguous to the first worn surface (5); one worn vertex (7) located between the first worn surface (5) and the second worn surface (6); grinding of the first worn surface (5) and of the second worn surface (6) to obtain a first ground surface (8), a second ground surface (9) and a new vertex (10), wherein the spacing between the new vertex (10) and the axis of rotation (R1) is less than an original reference value; definition of a new hole (11) defining a new axis of rotation (R2) wherein the spacing between the new vertex (10) and the new axis of rotation (R2) corresponds to the original reference value.

The method comprises the following phases: supply of one petal to be regenerated (1) comprising: one hole (2) defining an axis of rotation (R1) around which the petal to be regenerated (1) is movable between an opening position, wherein it defines a passage opening, and a closure position; a first worn surface (5) defining part of the passage opening; a second worn surface (6) contiguous to the first worn surface (5); one worn vertex (7) located between the first worn surface (5) and the second worn surface (6); grinding of the first worn surface (5) and of the second worn surface (6) to obtain a first ground surface (8), a second ground surface (9) and a new vertex (10), wherein the spacing between the new vertex (10) and the axis of rotation (R1) is less than an original reference value; definition of a new hole (11) defining a new axis of rotation (R2) wherein the spacing between the new vertex (10) and the new axis of rotation (R2) corresponds to the original reference value.