A Classification System to Describe Workpieces. Definitions, by W. R. Macconnell (Eds.)

By W. R. Macconnell (Eds.)

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Additional info for A Classification System to Describe Workpieces. Definitions, Edition: [1st English ed.]

Example text

Gear teeth Gear teeth are coded here, not under machining. surface Splines are not coded under this heading. Drilling pattern A drilling pattern is a geometrically regular arrange­ ment of two or more holes on one or more straight lines or on a pitch circle. In these circumstances the holes are functionally related. -e-e- -e58 No Yes Pos. 0 Designation Coding digit No auxiliary holes, gear teeth and forming Components do not have the described features. No gear teeth, no forming, holes drilled direction in one No gear teeth, no forming, holes drilled in more than one direction 59 No Yes Pos.

Yes No Designation Several principal bores, other than parallel The direction of bores are other than parallel. Machined annular surfaces, annular grooves Annular surfaces and annular grooves, no principal bore. g. plane surfaces, grooves, slots). Gear teeth are not coded under this heading. See coding digit 5. No Yes Designation Pos. g. weld seams. Non-functional chamfers are not included. One plane surface Only one plane surface is machined. 5£L xxx3x 55 Coding digit Yes No Designation Pos. Coding digit Plane stepped surfaces V Surfaces that can be machined with one position of holding the work.

Designation 6 Forming, no gear teeth, formed, with auxiliary hole(s) 7 Gear teeth, no auxiliary hole(s) Coding digit 4- Spur, straight and bevel gears, sprocket wheels; also ring gears and internal gears. Spline shafts are not coded here. i 8 Gear teeth, with auxiliary holes Spur, straight and bevel gears, sprocket wheels; also ring gears and internal gears with auxiliary holes. Spline shafts are not coded here. g. plane discs, curved discs, re­ volving drums). g. g. lathe beds, spindle boxes).

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