Metal deforming – With use of control means energized in response to activator... – Metal deforming by use of roller or roller-like tool element
Patent
1985-01-28
1987-03-31
Spruill, R. L.
Metal deforming
With use of control means energized in response to activator...
Metal deforming by use of roller or roller-like tool element
72 19, 72 20, 72 21, 72 11, 72 13, 72438, 364476, B30B 1516
Patent
active
046533001
ABSTRACT:
A die forging hammer senses the pressure of striking air and the pressure of lifting air from within the cylinder as well as ram start position. Various empirical information is stored and available to a computer which uses the inputs to compute velocity, ram position, rebound velocity and other pieces of information. In order to use the lifting air data, sequential pressure measurements are made by a microprocessor and stored for analysis and for use in deriving from stored empirical information about machine characteristics ram velocity and related information. Three types of systems are interwoven and may be used separately or simultaneously to control the blow control system. The blow control system itself compares input desired results with computed actual results and enables changes to valve timing to bring the actual into conformity with the desired. The adaptive system derives such information as actual velocity and energy, compares them with the corresponding desired results and makes immediate correction to valve timing in the course of the same blow. The self-regulating system stores information from a sequence of blows and makes a correction when it senses a trend away from the desired input. The process adaptive control senses factors such as forging temperature and forging deformation, which are factors related to the forging process, compares them with norms and make corrections to the valve timing to achieve desired results. Different programs are employed, preferably using algorithms applicable to the equipment in processes to derive desired output or intermediate information.
REFERENCES:
patent: 3464315 (1969-09-01), Weyer
patent: 3818799 (1974-06-01), Hague
patent: 3916499 (1975-11-01), Frame et al.
patent: 3930248 (1975-12-01), Keller
patent: 4116122 (1978-09-01), Linder et al.
patent: 4131164 (1978-12-01), Hague et al.
Crout Charles J.
Frame Charles W.
Harris Ronald N.
Chambersburg Engineering Company
Jones David B.
Spruill R. L.
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