An undercut is a design feature that interferes with the ejection of a molded part from the mold. An undercut can include features such as holes or boses that are not aligned with the direction of ejection, threaded sections, and snap fingers.Mar 31, 2015
How do you prevent undercut in injection molding?
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What is undercut material?
In manufacturing, an undercut is a special type of recessed surface that is inaccessible using a straight tool. In turning, it refers to a recess in a diameter generally on the inside diameter of the part. In milling, it refers to a feature which is not visible when the part is viewed from the spindle.
What is undercut injection molding?
In molding, an undercut is an indentation or protrusion in a shape that will prevent its withdrawal from a one-piece mold. Undercuts on molded parts are features that prevent the part from being directly ejected from an injection molding machine.
How do you prevent specks in injection molding?
Miter locks, wear plates and shutoff surfaces on molds can create metal dust and get into the mold cavity. If molded into the surface of a light-colored part, the dust will show up as black specks. Keeping the mold clean is crucial in preventing dust from creating issues with the part.
What is an undercut in tooling?
Undercuts are those features in an injection-moldedinjection-moldedArthur Eichengrün developed the first injection moulding press in 1919. In 1939, Arthur Eichengrün patented the injection moulding of plasticised cellulose acetate. The industry expanded rapidly in the 1940s because World War II created a huge demand for inexpensive, mass-produced products.https://en.wikipedia.org › wiki › Injection_mouldingInjection moulding - Wikipedia part that prevent its ejection from the mold. With straight-pull molds such as the ones used by Protolabs, these are any protrusions, holes, cavities, or recessed areas in the part where alignment is not perpendicular to the mold's parting line.
What is undercut in plastics?
Undercuts achieve complex plastic part designs for the injection molding process. ... An undercut is any indentation or protrusion that prohibits part ejection from a mold. It is a feature that the cavity and core cannot capture alone. It is die-locked which prevents the part from being ejected from the cavity.Jun 20, 2018
What is an undercut in a part?
Undercuts are those features in an injection-molded part that prevent its ejection from the mold. With straight-pull molds such as the ones used by Protolabs, these are any protrusions, holes, cavities, or recessed areas in the part where alignment is not perpendicular to the mold's parting line. ... Parting lines.
What is undercut in product design?
An undercut is any indentation or protrusion that prohibits part ejection from a mold. It is a feature that the cavity and core cannot capture alone. It is die-locked which prevents the part from being ejected from the cavity.Jun 20, 2018