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The standard (size) tolerances are divided into two categories: hole and shaft. They are labelled with a letter (capitals for holes and lowercase for shafts) and a number. For example: H7 (hole, tapped hole, or nut) and h7 (shaft or bolt). H7/h6 is a very common standard tolerance which gives a tight fit.
Engineering fits are generally used as part of geometric dimensioning and tolerancing when a part or assembly is designed. In engineering terms, the "fit" is the clearance between two mating parts, and the size of this clearance determines whether the parts can, at one end of the spectrum, move or rotate independently from each other or, at the other end, are temporarily or permanently joined.
An extensible series, covering various special threads. 2. Near side: The drawing notations "near side" and "far side" tell the reader which side of the part a feature is on, in occasional contexts where that fact is not communicated using the rules of projection alone. Contexts of usage are rather limited. See "far side" for examples. NSCM
Geometric dimensioning and tolerancing (GD&T) is a system for defining and communicating engineering tolerances via a symbolic language on engineering drawings and computer-generated 3D models that describes a physical object's nominal geometry and the permissible variation thereof. GD&T is used to define the nominal (theoretically perfect ...
Franklin D. Jones, in his textbook Machine Shop Training Course (5th ed), [4] noted: "In many cases, a jig borer is a 'jig eliminator.' In other words, such a machine may be used instead of a jig either when the quantity of work is not large enough to warrant making a jig or when there is insufficient time for jig making."
Today, MS-Windows is the standard platform for Creo Elements/Direct Drafting. In 2010 the product was renamed to Creo Elements/Direct Drafting (as opposed to 3D product Creo Elements/Direct Modeling). Creo Elements/Direct Drafting is one of the most common 2D CAD programs for mechanical engineering in Germany, behind the leader AutoCAD.
Astra R-Nesting is sheet nesting software for optimized cutting of particle board, metal, glass, etc. and output NC data for CNC cutting machines. Astra S-Nesting CAM: Astra S-Nesting is intended for optimizing true shape nesting, calculation cutting tool path and output NC data for cutting machines. TES International, LLC. ElectroFlo CAE
Creo is a family of Computer-aided design (CAD) apps supporting product design for discrete manufacturers developed by PTC.. Creo runs on Microsoft Windows and provides software for 3D CAD parametric feature solid modeling, 3D direct modeling, 2D orthographic views, Finite Element Analysis and simulation, schematic design, technical illustrations, and viewing and visualization.