Geometrical instruments – Area integrators – Electrical
Patent
1982-02-03
1984-06-26
Martin, Jr., William D.
Geometrical instruments
Area integrators
Electrical
33169C, 33172D, 33185R, 164150, G01B 525
Patent
active
044557574
ABSTRACT:
A plunger alignment fitting and method for cold chamber die casting machine are characterized by an axial center pointer or indicator and a tube guide therefor which is receivable in the shot chamber of the die casting machine. The tube guide has axially spaced, tapered annular shoulders which are in axial alignment with each other and the center pointer and such shoulders are centered to respective ends of the shot chamber by centering rings or plungers which have circumferentially arranged, equal length bearing elements constrained therein for radial movement. The bearing elements have radially inner and outer bearing ends which respectively engage the tapered shoulders and interior wall of the shot chamber when the centering rings are urged axially towards the shoulders by hand tightenable nuts threaded on the ends of the tube guide. The tube guide accordingly is centered and supported in the shot chamber by the bearing elements. The center pointer includes a center rod which is axially slidable in the tube guide and a hand tightenable, quick connect collet coupling permits easy and quick connection of different length center rod extensions to the center rod. The different length center rod extensions alternately mechanically identify center points on the center axis of the shot chamber for the plunger at extended and retracted positions thereof and the plunger is adjusted to such center points at each alternate position.
REFERENCES:
patent: 1058027 (1913-04-01), Anthony
patent: 1460279 (1923-06-01), Rosbach
patent: 2484801 (1949-10-01), Anderson
patent: 2674146 (1954-04-01), Rice
patent: 3711955 (1973-01-01), Holt
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