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Detailing-Drafting |
Coupling Parts made from Hard and Soft Materials 2
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Frictional units, shafts and hubs, and a plenty of design cases contains coupling parts made from hard and soft materials. The principles stated in this document explain the mechanism of wear formation, and the techniques to eliminate it. |
Coupling Parts made from Hard and Soft Materials 1
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Frictional units, shafts and hubs, and a plenty of design cases contains coupling parts made from hard and soft materials. The principles stated in this document explain the mechanism of wear formation, and the techniques to eliminate it. |
Layering CAD files for CAM
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CAD-CAM software and modern machine tools have changed dramatically the manufacturing possibilities in the last decades. Although CAD-CAM software facilitates and simplifies the design-manufacturing procedure, the CAD users must deliver their designs (2D-3D data) properly in order CAM users spent less time in programming (NC code). |
Pinching collet calculation
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Correct design and calculation of a pinching collet will result to a very strong clamping of the workpiece. The main calculation is the one of the clamping sleeve, in particular, the appropriate section area of the compressible collet tab. |
Lever calculation for pull down clamps
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Levers or lever-operated locks are used in combination with other simple clamps to form more complicated clamping systems like the external pull down clamps. This article describes how we can calculate lever-operated locks. |
Torque transferring methods (solid coupling)
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From small engines to large complicate production units, torque transferring between drive components exists almost in all machines. There are many methods securing components for torque transferring, in this article will be described five versions of radial force transferring (torque) between coaxial components. |
Sprocket tooth form for roller chain
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This article describes how cad designers can create sprocket tooth form for roller chain (per ANSI B29.1-1975). This tooth form depends only to pitch number, number of teeth and nominal roller diameter. With these three parameters and a pattern of the form one can design the exact sprocket form. |
Chamfers and fillets
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Chamfers and fillets are essential to a correct design. Many problems in machining, assembly and operation may appear in case of non-chamfered or non-filleted of part external and internal corners. The examples below cover almost all the design cases, which appears in general mechanical engineering. |
Design method of inversion
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Among the large number of methods devised to improve or facilitate the design procedure there is the method of inversion. Its essence consists in inverting the function, shape, position and material of parts. |
Across flats and hex
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Many times we have to design some special shafts and screws (non standard). Flats are cuts (hex or across flats) on these special parts to tighten or adjust them. |
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