Method and apparatus for friction agitation processing
AssigneeMazda Motor Corporation
InventorKotoyoshi Murakami
Life of this patent
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Abstract
In a friction agitation processing for processing a workpiece by penetrating a rotating processing tool into the workpiece keeping rotation, upon an occurrence of an emergency in execution of friction agitation processing, the processing tool is removed from the workpiece after a finishing time of scheduled friction agitation processing and thereafter stopped in rotation, so as thereby to prevent the processing tool from being locked in the workpiece.
Claims10
A friction agitation processing method of processing a workpiece by penetrating a processing tool into the workpiece keeping rotation and removing the processing tool from the workpiece after friction agitation processing, said friction agitation processing method comprising the steps of:
- providing an emergency stop demand signal for demanding a stop of the processing tool in execution of the friction agitation processing in an emergency;
- executing a removal of the processing tool from the workpiece at appearance of said emergency stop demand signal;
- and
- stopping rotation of the processing tool after said removal of the processing tool from the workpiece.
A friction agitation processing apparatus for processing a workpiece by a processing tool that is penetrated into a workpiece keeping rotation and removed from the workpiece after friction agitation processing, said friction agitation processing apparatus comprising:
- emergency stop means for providing an emergency stop demand signal for demanding a stop of the processing tool in execution of the friction agitation processing in an emergency;
- execution detection means for detecting execution of the friction agitation processing by the processing tool
- stop control means for stopping rotation of the processing tool after removal of the processing tool from the workpiece at appearance of said emergency stop demand signal from said emergency stop means when said execution detection means detects execution of the friction agitation processing.
Dependencies are inferred from the claim text.