| 摘要 |
PURPOSE:To uniform the gap of a heat after polishing by forming a rotary grindstone of a slanting part which increases in diameter at a specific angle and a large-diameter part which has the same constant diameter with its final expanded part, and bringing the grindstone into contact with the head from its small-diameter part and controlling the depth of the gap by the large- diameter part. CONSTITUTION:A head fitting jig 20 which has a recessed part 21 is movable in a direction T, and a head is supported on the jig at recessed fulcrum parts 24 and 25 formed in end parts 22 and 23 and rocked around the line 26 which connects the recessed fulcrum parts 24 and 25. Neither a support jig which operates the recessed fulcrum parts 24 and 25 nor a rocking jig is shown in a figure. A pressure screw 27 is provided engaging the fitting jig 20 threadably and this screw 27 fixes plural heads 29 mounted on a bottom surface 27 all together. The heads 29 are fixed to a small jig 30 by a screw 31 and mounted on the bottom surface 28 of the fitting jig 20 through the small jig 30. The small jig 30 is held at an interval with the adjacent small jig across a spacer 32 and the screw 27 gives a pressing force to the final spacer at the right end to fix them to the fitting jig 20 firmly.
|
