Stamping

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

Stator core for rotary electric machines and method of manufacturing the same

Abstract: A stator core for rotary electric machines, which is formed by helically and closely winding a steel strip formed by stamping with equally spaced inner slots defining a plurality of equally spaced tooth portions. The steel strip is also formed with notches each on each side of the stem portion of each tooth portion for the purpose of minimizing the plastic deformation stresses induced at the time of winding it.

Method for selective area stamping of optical elements on a substrate

Abstract: Selective area stamping of optical elements may be performed to make multiple micro-optic components on one or two sides of a substrate may be fabricated using a batch process. The presence of molding material may be controlled on the substrate through the use of gaps.

Control of temperature profile for a spray deposition process

Abstract: Spray forming is a novel method of rapidly manufacturing tools and dies for stamping and injection operations. The process sprays molten tool steel from a set of arc spray guns onto a ceramic former to build up a thick steel shell. The volumetric contraction that occurs as the steel cools is offset by a volumetric expansion taking place within the sprayed steel, which allows the dimensional accurate tools to be produced. To ensure that the required phase transformation takes place, the temperature of the steel is regulated during spraying. The sprayed metal acts both as a source of mass and a source of heat and by adjusting the rate at which metal is sprayed, the surface temperature profile over the surface of the steel shell can be controlled. The temperature profile is measured using a thermal imaging camera and regulated by adjusting the rate at which the guns spray the steel. Because the temperature is regulated by adjusting the feed rate to an actuator that is moving over the surface, this is an example of mobile control, which is a class of distributed parameter control. The paper describes the design of a time-varying H/sub 2/ controller for the process and presents results from the implementation of the controller on the spray forming process.

Processing method of metal middle frame mobile phone shell structure

Abstract: The invention discloses a processing method of a metal middle frame mobile phone shell structure and relates to the technical field of processing of mobile phones. The processing method comprises the following steps: A, stamping a blank of the metal middle frame by using a metal plate; B, milling an auxiliary antenna area on the blank of the metal middle frame in a CNC manner and retaining a connection position; C, forming a metal bottom shell by using an aluminum die casting manner; D, connecting the blank of the metal middle frame with the metal bottom shell to be a whole body; E, forming a main antenna area on the blank of the metal middle frame by using an injection molding manner; and F, milling off the connection position on the blank of the metal middle frame in the CNC manner to obtain the metal middle frame mobile phone shell structure. By combining processes of stamping molding, injection molding and CNC processing, the metal middle frame mobile phone shell structure is processed; the metal middle frame mobile phone shell structure is stable in process, high in production efficiency, short in processing time and low in production cost.