Electric Press Torque Motor Eccentric Axis Design
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Solution Overview
Problem
Existing mechanical and electromechanical presses face challenges in achieving compact size, versatility, safety, and operational flexibility, particularly for small batches of small parts, with limited impact rates and significant installation and maintenance costs.
Innovation Solution
An electromechanical press utilizing a Torque-type electric motor with an eccentric axis, integrated under the worktable, and a compact, stable frame design with partition walls for enhanced safety and noise insulation, coupled with a numerical control system for automated tool changes and adjustable power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a hydraulic motor is used to drive the pressing operation, then the pressing force and speed control are improved, but the device complexity increases due to additional hydraulic components and the risk of fluid leakage
Solution Approach 1:
The patent replaces the hydraulic motor with an electric motor (13) that directly drives the pressing operation. This substitution eliminates the hydraulic system components (hydraulic motor, fluid lines, pumps) while maintaining the pressing force capability through direct electric-to-mechanical energy conversion, thereby reducing device complexity and eliminating fluid leakage risks
2Speed
If a hydraulic motor is used for pressing operation, then speed control is improved, but reliability deteriorates due to potential fluid leakage and maintenance requirements
Solution Approach 1:
The patent replaces the hydraulic motor with an electric motor (13) that provides direct drive capability. Electric motors inherently provide reliable speed control through electronic regulation without the reliability issues of hydraulic systems (fluid leakage, seal failures, contamination). The electric motor maintains pressing speed control while significantly improving system reliability by eliminating hydraulic components
Solution Approach 2:
The electric motor system requires minimal maintenance compared to hydraulic systems. The electric motor (13) is a sealed, self-contained unit with no fluid seals or hoses that can leak or deteriorate, making it a self-service system that maintains reliability over extended periods without intervention, whereas hydraulic systems require regular maintenance of seals, fluid levels, and filtration
3Power
If a hydraulic motor is used to drive pressing operation, then power transmission is improved, but environmental impact worsens due to potential fluid leakage
Solution Approach 1:
The patent replaces the hydraulic motor with an electric motor (13) that transmits power directly to the pressing mechanism. This substitution maintains effective power transmission while eliminating the environmental hazard of hydraulic fluid leakage. The electric motor converts electrical energy to mechanical energy without requiring hydraulic fluids, thereby removing the source of environmental contamination while preserving the necessary pressing power
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The press achieves compactness, stability, and high operational flexibility with unparalleled versatility, safety, and responsiveness, enabling efficient forming and cutting operations with reduced noise and vibration, and adaptable power configurations.
Implementation Method 1
a torque motor, which comprises a stator and a rotor, viewed in the axial direction, having a plurality of teeth projecting outwardly from the inner peripheral surface of the rotor
Data Source
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AI summary
The present invention concerns an electromechanical press (1) comprising: - a worktable (5) defining a horizontal upper work plane P1 on which one or more samples to be formed can be arranged, and - a device (3) for forming components, comprising a forming tool (35) arranged to move in translation in a vertical plane P2 perpendicular to and intersecting the work plane P1 of the table, and - an electromechanical device (4) for actuating the forming device (3), supported on a frame (2) that is fixed in position relative to the work plane P1, the electromechanical actuating device (4) being arranged in kinematic connection with the forming device (3). According to the invention, the electromechanical actuating device (4) comprises at least one electric torque motor (41) with eccentric axis (43d, 43g), arranged in kinematic connection with the forming device (3), the electromechanical actuating device (4) being supported on the frame (2) in a position intersecting the plane P2 of movement of the forming device and situated between a base (23) of the frame on the ground and the work table (5) under the work plane P1, whereas, in all positions, the forming tool (35) is held in or above the work plane P1 of the work table (5), the work table being rigidly attached to the frame (2).