Tool making

Details Tool making Tool making

1992-12-10

1994-09-06

Evans, Geoffrey S.

Electric heating

Metal heating

Cutting or disintegrating

219 6916, B23H 100, B23H 912

Patent

active

053450523

ABSTRACT:
A trial tool for injection moulding is made by subjecting a cast Zn alloy tool blank to rapid EDM, using a first electrode and a relatively large EDM gap, to produce a coarse surface closely approximating to the required shape, and then subjecting the coarse tool to slow EDM, using a second electrode and a smaller EDM gap, to produce a trial tool having an operative surface of the required shape. A production tool is then made by subjecting a cast steel tool blank to rapid EDM, using the second electrode, and then subjecting the coarse production tool to slow EDM, using a third electrode.

REFERENCES:
patent: 3498158 (1970-03-01), Kougel
patent: 3694610 (1972-09-01), Saito et al.
patent: 3975608 (1976-08-01), Ullmann et al.
patent: 4736786 (1988-04-01), Trumbauer et al.
patent: 4952790 (1990-08-01), Futamura
"Rough and Finish Cut Electrodes", IBM Technical Disclosure Bulletin, vol. 12, No. 7, Dec. 1969, by Young.
Krzyzanowski et al., "Verwendungsgerechte Herstrellung von Schaumstoffmodellen," Giesserei, vol. 68, No. 15, pp. 463-467 (Jul. 1981).

Affiliated with

Also associated with

Rating

Tool making does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Tool making, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tool making will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1330916