Method of and apparatus for removing material
AssigneeEmerson Electric UK Limited
InventorsNicolas John Dougill, David John Cartwright, Laurence Alfred Bell
Life of this patent
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Abstract
Apparatus for removing material from a workpiece is described, in which the apparatus comprises means for advancing an abrasive tool towards the workpiece to bring an abrasive surface of the tool into contact with the surface of the workpiece, means for moving the abrasive surface relative to the workpiece to remove material from the workpiece, means for detecting a load applied to the tool by the workpiece, and means for controlling the rate of advancement of the abrasive tool towards the workpiece depending on the magnitude of the detected load.
Claims38
Apparatus for removing material from a workpiece, said apparatus comprising:
- an abrasive wheel having an abrasive circumferential surface and rotatable about a first axis passing through a centre thereof, and mounted to orbit about a second axis spaced from the first axis;
- means for effecting relative advancing movement between the second axis and the workpiece to remove material from the workpiece;
- means for detecting a load applied to said wheel by said workpiece;
- and
- means for controlling the rate of the advancing movement depending on the magnitude of the detected load.
Apparatus according to any preceding claim, wherein the control means is arranged to reverse said advancing movement when said detected load is greater than a predetermined value for a predetermined period of time.
Apparatus for removing material from a workpiece, said apparatus comprising:
- an abrasive wheel having an abrasive circumferential surface and rotatable about a first axis passing through a centre thereof, and mounted to orbit about a second axis spaced from the first axis;
- means for effecting relative advancing movement of the second axis towards the workpiece to remove material from the workpiece;
- means for detecting a load applied to the wheel by the workpiece;
- and
- means for controlling said moving means to reverse the advancing movement when the detected load is greater than a predetermined value for a predetermined period of time.
Apparatus according to any preceding claim, wherein said control means comprises means for monitoring the magnitude of the detected load during the removal of material at each of a plurality of spaced positions along the workpiece.
Apparatus for positioning a tool in preparation for the removal of material from a workpiece, said apparatus comprising means for controlling the position of the tool in preparation for the removal of material from one of a plurality of spaced positions along the workpiece in response to wear of the tool as determined during the previous removal of material from at least two spaced positions along the workpiece.
A method of removing material from a workpiece, said method comprising the steps of:
- rotating an abrasive wheel having an abrasive circumferential surface about a first axis passing through a centre thereof;
- orbiting the wheel about a second axis spaced from the first axis;
- effecting relative advancing movement between the second axis and the workpiece to remove material from the workpiece;
- detecting a load applied to said wheel by said workpiece;
- and
- controlling the rate of the advancing movement depending on the magnitude of the detected load.
A method of removing material from a workpiece, said method comprising the steps of:
- rotating an abrasive wheel having an abrasive circumferential surface about a first axis passing through a centre thereof;
- orbiting the wheel about a second axis spaced from the first axis;
- effecting relative advancing movement between the second axis and the workpiece to remove material from the workpiece;
- detecting a load applied to the wheel by the workpiece;
- and
- reversing the advancing movement when the detected load is greater than a predetermined value for a predetermined period of time.
A method of positioning a tool in preparation for the removal of material from a workpiece, said method comprising the step of controlling the position of the tool in preparation for the removal of material from one of a plurality of spaced positions along the workpiece in response to wear of the tool as determined during the previous removal of material from at least two spaced positions along the workpiece.
Apparatus for, or a method of, removing material from a workpiece substantially as herein described with reference to FIGS. 5 to 10 of the accompanying drawings.
Apparatus for, or a method of, positioning a tool in preparation for the removal of material from a workpiece substantially as herein described with reference to FIGS. 5 to 10 of the accompanying drawings.
Dependencies are inferred from the claim text.