APPARATUS FOR MACHINING WORKPIECES

摘要

A centreless grinding machine (2) having a control wheel (4) and a grinding wheel (8) for machining cylindrical workpieces is adjusted prior to a machining operation using a setting component (20) having the same diameter as the workpiece. The setting component is used so as to ensure that a surface (6) of the control wheel is aligned with a guide surface (18) of an outlet guide (16) so as to facilitate accurate machining. Relative movement of the control wheel and the outlet guide enables an electrically conducting portion (22) of the setting component to complete an electrical circuit (28, 34, 36) when the two surfaces (6, 18) are in alignment. A current meter (36) is activated when alignment is achieved. The setting component enables the machine to be adjusted at a remote location. The machine may therefore be located within a shielded enclosure for machining nuclear fuel pellets.