Cutting – With product handling means – Means to move – guide – or permit free fall or flight of product
Patent
1989-09-05
1990-08-14
Yost, Frank T.
Cutting
With product handling means
Means to move, guide, or permit free fall or flight of product
83685, 83690, B26F 100
Patent
active
049477200
ABSTRACT:
A punch press die (D) is used to construct rotor laminations (RL) and stator laminations (SL) for a dynamoelectric machine (1). A cavity (17) is formed in the die for a punch (15) to travel through and stamp a slot (5) in a strip (3) of material. Opposing side walls (21A, 21B) of the die form the cavity and each side wall has a longitudinal groove (25A, 25B). Each groove is inclined across the face of the wall from one end to the other, the grooves being inclined in opposite directions. In the preferred embodiment, the grooves are oriented about the center-lines of their respective side walls and have a co-planar point (MP) mid-way along their length. Material clinging to the striking face (24) of the punch (115) as it moves through the cavity tends to expand into the grooves and is drawn off from the face of the punch.
REFERENCES:
patent: 2284956 (1942-06-01), Gardner
patent: 2365977 (1944-12-01), Stine et al.
patent: 2378562 (1945-06-01), Lahr
patent: 4091700 (1978-05-01), Cloup
patent: 4516450 (1985-05-01), Shuttleworth
patent: 4543865 (1985-10-01), Kramski
Emerson Electric Co.
Payer Hwei-Siu
Yost Frank T.
LandOfFree
Die improvement does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Die improvement, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Die improvement will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-454180