5.
Feed the tool from the center of the stock outward, toward yourself, using the hand
crossfeed. One or two light cuts is usually enough to true up an end roughened by the
hacksaw. After facing one end, reverse the work and face the opposite end.
Centering a Round and Rectangular Stocks
1.
You can center on round stock (Figure 11.2) with calipers, dividers, or special
centering instruments (Figure 11.3). Centering square or rectangular stock is done by
scribing lines from opposite corners. The intersection of these lines is the center (Figure
11.4).
Figure 11.2 Centering on round stock and
Figure 11.4 Centering on square or rectangular stock.
Figure11.3 Use centering instruments include calipers and dividers.
2.
After locating the center of each end, drive a starting depression for the drill into the
stock with a center punch.
3.
Check centering accuracy by placing the workpiece between the spindle and tailstock
centers.
4.
Revolve the headstock slowly against the tip of a tool or a piece of rigidly held chalk.
5.
The chalk should touch just the high spots (Figure 11.5). If the center is off 0.002" or
more, correct the position of the center by repunching at an angle.
11-2
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Midas 1220 XL Operator’s Manual
Содержание Midas 1220 XL
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