Electricity: motive power systems – Positional servo systems – Digital or numerical systems
Patent
1998-03-13
2000-01-04
Salata, Jonathan
Electricity: motive power systems
Positional servo systems
Digital or numerical systems
36447429, G05B 1929
Patent
active
060113766
ABSTRACT:
A method and apparatus for verification of the linear position of a machine element driven by a motor is provided. The actual position of the element is detected and compared to an expected position. When the two positions differ from each other by more than a predetermined tolerance value for a predetermined amount of time, an error signal is generated which deactivates the motor and generates an alarm for the machine operator. Preferably, the linear position of the axis is detected by a transducer and the expected position is determined by detecting the rotary position of the motor through the use of a resolver, which is then converted to a linear equivalent through the use of the gearing ratio. The method and apparatus can detect faulty machine conditions and thereby prevent machine malfunction and/or machine damage. Preferably, the method and apparatus are used to verify the position of machine elements in an injection molding machine.
REFERENCES:
patent: 3941988 (1976-03-01), Hagstrom
patent: 3996454 (1976-12-01), Froyd
patent: 4535277 (1985-08-01), Kurakake
patent: 4540359 (1985-09-01), Yamazaki
patent: 4608651 (1986-08-01), Murakami et al.
patent: 4665353 (1987-05-01), Salazar et al.
patent: 4785221 (1988-11-01), Neko
patent: 4826418 (1989-05-01), Kamiguchi
patent: 4828473 (1989-05-01), Otake et al.
patent: 4846654 (1989-07-01), Neko
patent: 4847779 (1989-07-01), Masao et al.
patent: 4851171 (1989-07-01), Shimizu et al.
patent: 4864204 (1989-09-01), Daggett et al.
patent: 4881186 (1989-11-01), Tsuboi et al.
patent: 4988273 (1991-01-01), Faig et al.
patent: 4988932 (1991-01-01), Markis et al.
patent: 4988935 (1991-01-01), York
patent: 5002708 (1991-03-01), Inaba et al.
patent: 5115172 (1992-05-01), Ishii et al.
patent: 5115396 (1992-05-01), Keegan
patent: 5121327 (1992-06-01), Salazar
patent: 5153149 (1992-10-01), Naito et al.
patent: 5187620 (1993-02-01), Notake et al.
patent: 5246643 (1993-09-01), Inaba et al.
patent: 5362222 (1994-11-01), Faig et al.
patent: 5367236 (1994-11-01), Salazar
patent: 5380181 (1995-01-01), Hiraoka et al.
patent: 5445773 (1995-08-01), Arai
patent: 5469038 (1995-11-01), Silvey
Catanzaro John C.
O'Bryan James E.
Topmiller David A.
Cincinnati Milacron Inc.
Friskney Stephen H.
Salata Jonathan
LandOfFree
Method and apparatus for injection molding machine control does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for injection molding machine control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for injection molding machine control will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1075247