Stamping

About: Stamping is a research topic. Over the lifetime, 22501 publications have been published within this topic receiving 83554 citations.

Design methodology for optimized die coatings : The case for aluminum pressure die-casting * Invited paper B7-1-1, ICMCTF, presented Monday May 2nd, 2005, San Diego

Abstract: The overriding philosophy proposed in this paper is that of specifically designing an optimized die coating system, or range of systems, to meet each material forming application, rather than trying to make one coating or an available range of coatings fit a specific application. Many different die coatings are being used in material forming processes such as aluminum pressure die casting, metal stamping, plastic molding, and glass forming, with different levels of success. This paper presents an optimized design methodology that is based on a multi-layered and graded coating system that first identifies the most appropriate working layer that has minimal chemical interaction with the material being formed, an intermediate layer that accommodates the residual thermal stresses induced by the forming cycle, and an engineered adhesion layer that provides strong adhesion of the coating system to the substrate. In addition the substrate can also be subjected to a surface modification treatment that will provide an improvement in the mechanical properties of the substrate surface to better support the coating system. This methodology is achieved using laboratory testing, simulated and in-plant die casting trials, and modeling in an effort to generate a fundamental understanding of how such optimized die coating systems may be designed. In order to achieve this objective, a fundamental understanding of how such die coatings degrade and fail is also of importance. This methodology has been specifically applied to design optimized coating systems for aluminum pressure die-casting dies.

Stamping system for manufacturing high tolerance parts

Abstract: A system and process for stamping parts having tolerances below 1000 nanometers. The inventive system and process is particularly suited for producing optoelectronic parts. The system includes a stamping press and one or a progression of stamping stations for supporting a punch and die. The stamping stations are designed to maintain substantial alignment of the punch and die with minimal moving components. The stamping station includes a shaft for rigidly guiding the punch to the die. The stamping press is capable of providing the punch with the necessary force to perform the stamping operations. The system includes an interface system for interfacing the force of the press with the punch, while simultaneously structurally decoupling the press from the punch. The system also includes a locating sub-plate, for locating the stamping station in alignment relative to each other, and means for in-line machine stock material before entry into the stamping stations.

Cross bar transfer press.

Abstract: A mechanical transfer press employs a plurality of paired self-supporting, stroke doubling transfer/feed mechanisms, with each pair of transfer/feed mechanisms coupled to a cross bar, for sequentially transferring piece parts to a series of stamping stages in the press. Vacuum cups attached to the cross bar engage one or more piece parts for transferring the piece parts to the next stage. Each transfer/feed mechanism includes a lift/lower drive as well as a feed/return drive for positioning piece parts intermediate upper and lower dies of the press and for removing the cross bar and vacuum cups from the stamping stage prior to the stamping operation. Each pair of transfer/feed mechanisms is positioned above its associated stamping stage to facilitate access to and increase clearance from the dies. Each pair of transfer/feed mechanisms with its associated dies forms a press module which can be easily removed and replaced as well as individually adjusted in its feed/return and lift/lower distances and motion profile independent of other such modules. A programmable numeric controller is used to control press as well as transfer/feed mechanism operation.