Machining by Pressure

320031

01/01/1932

Event
Pre-1964 SAE Technical Papers
Authors Abstract
Content
STANDARDS of accuracy in forging are subject to constant revision. Accuracy depends on the equipment used, and the limit of forging accuracy was thought to have been reached because of the structural limitations in machines of existing types. However, the development of a new type of pressure machine has again caused a revision of our ideas of the accuracy attainable. Finish forging on this machine can be done on the heat remaining from forging or annealing, at a temperature below that at which scale is formed. Cold coining is also done with this machine with a high degree of accuracy and uniformity.
What may be referred to as pressure machining of forgings eliminates roughing cuts, reduces the number of handlings and, in some cases, entirely eliminates further machining. Other economies resulting from uniformity are the facility with which work fits into chucks, jigs and hoppers and the uniformity in weight of parts such as connecting-rods.
The machine is used also for straightening and sizing malleable castings and for hot-forging both ferrous and non-ferrous metals.
Meta TagsDetails
DOI
https://doi.org/10.4271/320031
Pages
4
Citation
Friedman, J., "Machining by Pressure," SAE Technical Paper 320031, 1932, https://doi.org/10.4271/320031.
Additional Details
Publisher
Published
Jan 1, 1932
Product Code
320031
Content Type
Technical Paper
Language
English