Page 469 - Gear Technology Solutions

The MMC menu offers a soft key, which will activate the machine axes to
move to the upper position. It stops when it reaches the upper center of roll
and mid swing axes positions, however with the X-axis held back also by
38mm. The work gear also rotates automatically in the theoretically correct up-
per grinding position of the marked slot (Figure 40).

Figure 40: Upper stock division, initial step

The operator has to rotate now the A-axis (work axis) by jogging in a position
where the grinding wheel can be safely fed into the marked slot (the part can-
not be de-chucked anymore. During the X-axis move of the wheel into the zero
hold back position, the right side of the grinding wheel has to be close to the
right-side flank (upper flank). When the zero hold back position is reached, the
grinding wheel is rotated constantly by hand, while the A-axis is rotated with
the finest increment with the hand wheel in negative direction until contact be-
tween the grinding wheel and the flank on the right side is detected (see Fig-

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