Hydraulic Eccentric Drive for Stretch-Forging Cycle Time Reduction
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Solution Overview
Problem
Current forging machines, particularly those used for stretch-forging, face challenges in achieving short cycle times, which hinder efficient processing of metal workpieces.
Innovation Solution
A forming machine equipped with at least two forming tools driven by a hydraulic system incorporating an eccentric element and a hydraulic drive element, where the hydraulic drive element is coupled to the eccentric element, allowing for efficient motion control through a hydraulic medium, and includes a reset device for the front subchamber and a setting device for the rear subchamber to manage pressure and position, enhancing the forming process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional hydraulic or mechanical drives are used for tool carriers in stretch-forging machines, then the machine can perform forming operations, but the cycle times are too long to achieve efficient processing
Solution Approach 1:
The patent applies hydraulic drive elements with eccentric elements to drive the tool carriers in stretch-forging machines. The hydraulic system with eccentric mechanism enables faster and more efficient tool carrier movement compared to conventional hydraulic or mechanical drives, directly reducing cycle times and improving productivity while maintaining controlled motion of forming tools
Solution Approach 2:
The invention introduces dynamic control of tool carrier motion through hydraulic drive elements coupled with eccentric mechanisms. This allows the system to adapt motion characteristics during the forming cycle, optimizing both the approach and return motions of tool carriers to minimize cycle time while maintaining precision
2Ease of operation
If the hydraulic drive element is coupled to the eccentric element for efficient motion control, then the forming tools can be driven with precise motion, but the device complexity increases
Solution Approach 1:
The patent combines the hydraulic drive element and eccentric element into an integrated coupling system. This merging of hydraulic actuation with mechanical eccentric motion control achieves precise tool carrier motion while consolidating components, thereby reducing overall system complexity compared to separate hydraulic and mechanical drive systems
Solution Approach 2:
The eccentric element serves as an intermediary mechanism between the hydraulic drive element and the tool carrier. It translates hydraulic linear motion into the required reciprocating motion of the tool carrier with precise control, simplifying the overall control architecture while maintaining motion precision
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
This configuration enables faster and more precise forming operations, reducing cycle times and improving the overall efficiency of the stretch-forging process by allowing for controlled and synchronized motion of the forming tools.
Implementation Method 1
a hydraulic drive element, in particular a drive piston, which drive element is coupled hydraulically to the eccentric element in such a way that the eccentric motion of the eccentric element produces a working motion of the hydraulic drive element by way of a hydraulic medium
Implementation Method 2
the or each driving device comprises at least one eccentric element and at least one hydraulic drive element, in particular a drive piston, which drive element is coupled hydraulically to the eccentric element in such a way that the eccentric motion of the eccentric element produces a working motion
Data Source
AI summary
A forming machine for forging metal workpieces which have been heated and/or are in a flowable condition including at least two forming tools (4A, 4B), at least one driving device for driving at least one of the forming tools in an approach motion (R) of the forming tools toward one another or in a return motion of the forming tools away from one another, and wherein the driving device comprises at least one eccentric element (22A, 22B) and at least one hydraulic drive element (11A, 11B), wherein the at least one hydraulic drive element (11A, 11B) is coupled hydraulically directly or indirectly to the eccentric element (22A, 22B) in such a way that an eccentric motion of the eccentric element produces a working motion of the hydraulic drive element by way of a hydraulic medium.