By W. R. Macconnell (Eds.)
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Extra resources for A Classification System to Describe Workpieces. Definitions
1 No gear teeth, no forming, axial hole(s) not related by a drilling pattern 2 No gear teeth, no forming, holes axial and/ or radial and/or in other directions not related by a drilling pattern 5 41 No 0 Yes Pos. T1 " 7 42 No Yes Pos. 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.
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. 21 xxx4x J5L Plane stepped surfaces, at right angles, and/or opposite SL inclined Plane surfaces that require the work held in more than one position for machining. 3. to SL 7S - Groove and/or slot o 56 No Yes Pos. Designation Groove and/or slot and position 4 Curved surface 8 57 Guide surfaces No Designation Yes Auxiliary holes Centres and holes drilled during assembly or erection are not coded.
A rectangular prism is a better envelope for these components than a cylinder. Flat components Flat components have as an envelope a rectangular prism of dimensions such that the ratios of the three edges are: A ^ ~ A ~B " 6> ~C 45 Compo nent Class No Designation Yes Principal shape The principal shape describes the rough shape of the machined component. With flat components the principal form is decided especially on the basis of the plan view. Small deviations and recesses are disregarded when deciding the principal shape.
A Classification System to Describe Workpieces. Definitions by W. R. Macconnell (Eds.)