Crank press drive

• US 3,983,738 A
• Filed: 11/13/1974
• Issued: 10/05/1976
• Est. Priority Date: 11/13/1974
• Status: Expired due to Term

• Current Assignee: Ivan Nikanorovich Filkin, Jury Mitrofanovich Artemov, Jury Timofeevich Guriev, Mikhail Vladimirovich Kholmogorov, Petr Nikolaevich Vysotsky, Viktor Gavrilovich Pljugachev, Viktor Ivanovich Vlasov, Viktor Vladimirovich Lebedev, Vladimir Andreevich Noskov, Vladimir Efimovich Svistunov, Vladislav Nikolaevich Tynyanov
• Original Assignee: Ivan Nikanorovich Filkin, Jury Mitrofanovich Artemov, Jury Timofeevich Guriev, Mikhail Vladimirovich Kholmogorov, Petr Nikolaevich Vysotsky, Viktor Gavrilovich Pljugachev, Viktor Ivanovich Vlasov, Viktor Vladimirovich Lebedev, Vladimir Andreevich Noskov, Vladimir Efimovich Svistunov, Vladislav Nikolaevich Tynyanov
• Inventors: Kholmogorov, Mikhail Vladimirovich, Vlasov, Viktor Ivanovich, Svistunov, Vladimir Efimovich, Artemov, Jury Mitrofanovich, Vysotsky, Petr Nikolaevich, Lebedev, Viktor Vladimirovich, Tynyanov, Vladislav Nikolaevich, Noskov, Vladimir Andreevich, Pljugachev, Viktor Gavrilovich, Guriev, Jury Timofeevich, Filkin, Ivan Nikanorovich
• Primary Examiner(s): Lanham, C.W.
• Assistant Examiner(s): Crosby, Gene P.
• Application Number:
  US05/523,440
• Time in Patent Office: 692 Days
• Field of Search: 72/429, 72/450, 72/435, 72/445, 100/282, 74/572, 192/48.9, 192/48.91
• US Class Current: 72/429
• CPC Class Codes: B21J 9/18 operated by making use of gearing mechanisms, e.g. levers, spindles, crankshafts, eccentrics, toggle-levers, rack bars
• CPC Class Codes: B30B 1/266 Drive systems for the cam, eccentric or crank axis
• CPC Class Codes: F16F 15/30 Flywheels F16F15/16, F16F15/28 take precedence; suppression of vibrations in rotating systems using elastic members or friction-damping members moving with the system, i.e. split flywheels or single masses connected to a hub by elastic members or friction-damping members F16F15/12; rotary-body aspects in general F16C13/00, F16C15/00

Abstract

The invention is intended for crank presses. The drive according to the invention, comprises a first flywheel installed on a crankshaft connected to a slide block and a second flywheel connected to the crankshaft by means of a clutch. The first flywheel is rotated by means of a motor. Gyratory mass of the flywheel is selected to be such that kinetic energy of the flywheel accumulated by it in the course of its acceleration would be fully spent by it in carrying out the technological operation and in returning the slide block to the initial position. The driving motor may be represented by one or several synchronously operating hydraulic motors or electric motors disposed over a circumference concentric with the flywheel and connected to the latter by means of gear trains of similar gear ratio.

Claims

1. A crank press drive, comprising:

a crankshaft connected by means of a converting mechanism to a working member -- a slide block;

a flywheel installed on said crankshaft;

a motor for operatively rotating said flywheel;

a clutch connecting said flywheel to said crankshaft for transmitting torque to the latter to displace said slide block of a press, said flywheel being of such gyrating mass value that kinetic energy accumulated by it is in fact fully spent during one complete revolution of said crankshaft, including consumption of energy needed for performing the technological operation with applying to said slide block maximum load permissible for the given press.

2. A drive as set forth in claim 1, wherein its crankshaft mounts coaxially with said flywheel an additional flywheel of larger diameter and larger gyrating mass as compared with the first one of said flywheels and use is made of a double-position clutch which in one of its positions at idle rotation of the flywheels couples them together, while in its other position during displacement of the slide block it connects the first one of said flywheels to the crankshaft and simultaneously uncouples the flywheels from each other.

3. A drive as set forth in claim 1, wherein the function of the motor is performed by a hydraulic motor connected to the flywheel by means of a gear train.

4. A drive as set forth in claim 1, wherein the function of the motor is performed by several synchronously operating hydraulic motors disposed over a conditional circumference concentric with the flywheel and connected to the latter by means of gear trains of similar gear ratio.

5. A drive as set forth in claim 1, wherein the function of the flywheel is performed by a rotor of electric induction motor whose stator is disposed on an arc of circumference concentric with the flywheel.

6. A drive as set forth in claim 1, wherein the function of the motor is performed by several synchronously operating electric induction motors disposed over a circumference concentric with the flywheel and connected to it by means of gear trains of similar gear ratio, whereas each electric motor has a stator disposed over an arc of circumference concentric with the rotor of the given electric motor.