A blemish on a drawn sheet metal part caused by a slight change in metal thickness. The mark is called an impact line when it results from the impact of the punch on the blank; it is called a recoil line when it results from transfer of the blank from the die to the punch during forming, or from a reaction to the blank being pulled sharply through the draw ring.
Source: The OHIO State University
A control process in which the motion of the working members is precisely controlled in short increments.
Source: The OHIO State University
A press whose main frame may be tilted backward, usually up to a 45 degree angle, to facilitate ejection of parts by gravity through an open back.
Source: The OHIO State University
A cam that travels at an angle (other than 90Â degrees) to the press stroke.
Source: The OHIO State University
A variable which is not driven or derived from any other input or variable.
Source: The OHIO State University
Also called as bleed through. It could be caused by the burr on the inner panel edge or a sharp feature on the inner panel flange.
Source: The OHIO State University
A separate steel which is mounted upon or into another section to aid in ease of repair or to extend wearability. May be of similar or dissimilar metal than parent metal.
Source: The OHIO State University
Distance of the outer panel from the trim edge to the inside of metal in the mating flange area.
Source: The OHIO State University
Punch side of the panel side that comes in contact with inner panel.
Source: The OHIO State University
Maximum pressure, usually in tons on the punch during drawing
Source: The OHIO State University
A die in which the conventional positions of the male and female members are reversed.
Source: The OHIO State University
A mechanism attached to a press for removing a part from a die. Also called an extractor.
Source: The OHIO State University
An operation used to increase the length of a tube or cup through reduction of wall thickness and outside diameter, the inner diameter remaining unchanged.
Source: The OHIO State University
