Investment Casting Positioning


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Aerospace Castings Military Castings Precision Investment Castings Prototype Castings Aluminum Investment Castings Copper Alloy Investment Castings Search Precision Investment Castings All Any Exact	Request a Quote Upload Drawings Investment Casting Positioning Hole and boss position tolerance depends on parent casting configurations. Holes or boss position on the periphery of concentricity examples shown will be affected by the degree of eccentricity. The position of holes or bosses on a flat plate will be affected by linear tolerances. A new factor enters here, however, Linear tolerances are based on volumetric shrinkage, and holes and bosses disturb this shrinkage. These tolerance bands can be reduced by about 10% for a configuration that disturbs a shrinkage pattern. It is difficult to predict the exact amount, and the foundry may wish to rework tooling to take full advantage of these better tolerances. Holes and bosses on a parent diameter are affected by the diameter's degree of roundness, although the 10% reduction noted above still applies. As a rule of thumb, a bolt circle diameter with holes and bosses will have the same out of roundness as any other diameter. Thus, a 2" BCD will be round within .025" TIR. This is best expressed and designed for, relative to true position. The parallelism and straightness of such holes is based on parent casting straightness, thus the tolerance standards already given apply. Questions about investment casting positioning? Contact us today for all your investment casting needs.

Aerospace Castings \| Aluminum Investment Castings \| Angular Holes \| Angularity \| Copper Alloy Investment Castings \| Concentricity \| Contours, Radii, Cams Curved Holes \| Flatness (Dish) \| Hole Tolerance \| Internal Radii, Fillet \| Investment Casting Advantages \| Investment Casting Capabilities \| Military Castings Out of Roundness \| Parallelism \| Perpendicularity \| Precision Investment Castings \|Positioning \| Prototype Castings \| Roundness \| Standard Linear Tolerances Straightness \| Surface Textures \| Tapered Holes \| Variables \| Investment Casting Site Map Londonderry, NH Website Design Development Alcumet, Inc. is a leader in the production of aerospace castings, military castings, prototype castings, aluminum investment castings and beryllium copper investment castings. MA, Massachusetts, NH, New Hampshire, CT, Connecticut, RI, Rhode Island, VT, Vermont, ME, Maine, New England, USA