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DIN 6880: Bright Key Steel; Dimensions, Permissible Variations, Weights: Active: DIN 6885-1: Drive Type Fastenings without Taper Action – Part 1: Parallel Keys, Keyways, Deep Pattern: Active: DIN 6885-2: Drive Type Fastenings without Taper Action – Part 2: Parallel Keys, Keyways, Deep Pattern for Machine Tools, Dimensions and Application ...
Key relevance is the measure of similarity between the key and the optimal size needed to fit the lock, or it is the similarity between a duplicate key and the original it is seeking to replicate. Key relevance cannot be deduced from a key code, since the key code merely refers to a central authoritative source for designed shapes and sizes of ...
Example of true position geometric control defined by basic dimensions and datum features. 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.
All tools assigned to the same tool class are suitable for the same task, but they have different sizes. The tool classes are organized in a tree, which is adapted and expanded by the user. The tool types with the corresponding images describe the required geometric values and where they are measured. Each tool type is assigned to a class list ...
For example, if a shaft with a nominal diameter of 10 mm is to have a sliding fit within a hole, the shaft might be specified with a tolerance range from 9.964 to 10 mm (i.e., a zero fundamental deviation, but a lower deviation of 0.036 mm) and the hole might be specified with a tolerance range from 10.04 mm to 10.076 mm (0.04 mm fundamental ...
The tapered key is tapered only on the side that engages the hub. The keyway in the hub has a taper that matches that of the tapered key. Some taper keys have a gib, or tab, for easy removal during disassembly. The purpose of the taper is to secure the key itself, as well as to firmly engage the shaft to the hub without the need for a set screw.