US 12,214,414 B2
Linear-actuated press machine having multiple motors and clutch system for multi-speed drive functionality
Jeffrey E. Debus, Ballwin, MO (US); and Darrell B. Harrelson, St Peters, MO (US)
Assigned to PDInnovative LLC, Fenton, MO (US)
Filed by PDInnovative LLC, Fenton, MO (US)
Filed on Nov. 9, 2023, as Appl. No. 18/505,612.
Application 18/505,612 is a continuation of application No. 17/933,741, filed on Sep. 20, 2022, granted, now 11,819,906.
Application 17/933,741 is a continuation in part of application No. 17/806,268, filed on Jun. 9, 2022, granted, now 11,541,618, issued on Jan. 3, 2023.
Claims priority of provisional application 63/261,453, filed on Sep. 21, 2021.
Claims priority of provisional application 63/263,603, filed on Nov. 5, 2021.
Prior Publication US 2024/0075518 A1, Mar. 7, 2024
Int. Cl. B30B 1/18 (2006.01); B21J 9/02 (2006.01); B30B 15/12 (2006.01)
CPC B21J 9/02 (2013.01) [B30B 1/18 (2013.01); B30B 15/12 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A press machine for forming a part, comprising:
a moveable press ram for holding a tool that forms the part;
an actuator for moving the moveable press ram by use of a male-female thread mechanism for producing a linear movement of the moveable press ram, the actuator including first and second actuator sprockets coupled to the male-female thread mechanism;
a first motor drive system for producing a low-speed high-force linear movement to the moveable press ram via the actuator, the first motor drive system including a first motor for driving a first motor sprocket, a clutch, a first belt system coupling the first motor sprocket to the first actuator sprocket;
a second motor drive system for producing a high-speed low-force linear movement to the moveable press ram via the actuator, the second motor drive system including a second motor for driving a second motor sprocket and a second belt system coupling the second motor sprocket to the second actuator sprocket; and
a lubrication reservoir having fluid for providing lubrication to the male-female thread mechanism of the actuator via a fluid line;
wherein, in response to the high-speed low-force linear movement of the second motor drive system to advance the press ram relative to the part, the fluid flows, via the fluid line, from the lubrication reservoir to a region around the male-female thread mechanism;
wherein, in response to the high-speed low-force linear movement of the second motor drive system to retract the press ram relative to the part, the fluid flows, via fluid line, from the region around the male-female thread mechanism to the lubrication reservoir.