OO-M-340F
3.7.2 Wrench set. Each attachment shall be furnished with one set of wrenches that shall be capable of providing for the following functions:
a. Locking vertical adjustment of basic unit. b. Locking belt tension adjustment.
c. Securing and removing V-belt sheaves and motor pulleys. d. Securing and removing all arbors and arbor nuts.
e. Securing and releasing attachment fastening devices (see 3.8). f. Securing and releasing belt-driven heads in shop cabinets.
3.8 Optional equipment. When specified (see 6.2), the following optional equipment shall be furnished. Equipment shall be of proper size and capacity to fit the size of basic head specified. The basic attachment and all accessories shall be capable of performing within the specified accuracy without damaging any of the parts. The method of securing equipment to the basic attachment shall be accomplished without disturbing adjustments such as spindle bearing mountings.
3.8.1 Ninety-degree universal milling head. The 90-degree universal milling head shall be capable of being securely mounted on the basic attachment. The head shall be adjustable for positioning the cutter at any point throughout 360 degrees and shall be self-indicating. The universal milling head shall permit the mounting of arbors and cutters specified herein and shall be capable of cutting the specified keyways in a 1020 steel round bar, 30 inches long, mounted between lathe centers. Cutting shall be at the specified range. The finish shall be not rougher
than 125 microinches arithmetic average (aa). The cut shall extend full depth to the end of the bar with dimensions specified in table IV.
TABLE IV. Size of optional equipment.
Size 1 |
Size 2 |
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Cut dimensions |
Cut dimensions |
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|
Equipment |
Width (inch) |
Depth (inch) |
Length (inch) |
Feed rate (inch/min.) |
Dia. (inch) |
Width (inch) |
Depth (inch) |
Length (inch) |
Feed rate (inch/min.) |
Dia. (inch) |
90° universal milling head |
1/2 |
1/4 |
30 |
1 |
2 |
3/4 |
3/8 |
30 |
1 |
3 |
High speed end milling and drilling head |
1/4 |
1/8 |
10 |
1 |
1 |
3/8 |
3/16 |
10 |
1-1/2 |
1-1/2 |
External grinding head |
- |
- |
- |
7 |
- |
- |
- |
- |
10 |
- |
Internal grinder |
- |
3 |
- |
- |
1 |
- |
4 |
- |
- |
1-1/4 |
Heavy-duty deep hole ginder |
- |
8 |
- |
- |
2-1/4 |
- |
10 |
- |
- |
2-1/2 |
Internal keyseater and slotter (keyseat) |
3/8 |
3/16 |
2-1/4 |
- |
1-1/2 |
1/2 |
1/4 |
3 |
- |
2 |
Feed table (keyway) |
1/2 |
1/4 |
7 |
- |
3/4 x 3/4 |
3/4 |
3/8 |
7 |
- |
1 x 1 |
11
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