Patent ID: 11904564
Assignee: PDINNOVATIVE LLC
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A linear-actuated 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 male-female thread mechanism includes an actuator screw that rotates but remains linearly stationary and a nut that moves along the actuator screw as the actuator screw rotates, the nut being coupled to the press ram, the actuator including first and second actuator sprockets coupled to the actuator screw for rotating the actuator screw;
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;
wherein, in response to the high-speed low-force linear movement of the second motor drive system to advance or retract the press ram relative to the part, the clutch at least partially disengages the first motor from the actuator to maintain a rotational speed of the first motor below a limit to reduce possible damage to the first motor; and
wherein, in response to the low-speed high-force linear movement of the first motor system to form the part, the clutch is operationally engaged to transfer torque from the first motor to the first actuator sprocket of the linear actuator via the first belt system.