Press Forming Tool with Spring-Elastic Tolerance Compensation
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Solution Overview
Problem
Press forming tools face challenges with production tolerances and reduced cooling performance due to minimal air gaps between tool surfaces and components during quench hardening, leading to inconsistent component quality and extended cooling times.
Innovation Solution
Incorporating a spring-elastic adjusting element on the tool clamping plate, which allows for relative movement between the upper and lower tools, ensuring full-surface contact and homogeneous force distribution, and integrating cooling channels for enhanced heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple upper tools are arranged side by side in a press to form multiple blanks simultaneously, then productivity increases, but production tolerances worsen due to distortion of tools and press components
Solution Approach 1:
The press tooling system is segmented into multiple independent upper tools that can move relative to each other and to the press ram through individual tool clamping plates with spring-elastic adjusting elements. This segmentation allows each tool to independently compensate for distortions while maintaining overall system productivity
Solution Approach 2:
The tool clamping plates are designed to be movable relative to both the press ram and press bed, with spring-elastic adjusting elements that allow dynamic adaptation during pressing operations. This dynamic capability enables each upper tool to independently compensate for distortions of the press ram, press bed, and other tools, thereby maintaining manufacturing precision while producing multiple components simultaneously
2Temperature
If there are minimal air gaps between tool surfaces and component during quench hardening, then cooling performance improves, but production tolerances worsen due to indirect and direct contact between component surface and tool surfaces
Solution Approach 1:
The spring-elastic adjusting elements enable the tool clamping plates to dynamically adjust the position of upper tools during pressing and quenching operations. This dynamic adjustment ensures optimal contact conditions between tool surfaces and component, maintaining full-surface contact for effective cooling while compensating for any distortions that might create unwanted gaps or excessive contact pressure
Solution Approach 2:
The spring-elastic adjusting elements change the positional parameters of the upper tools relative to the press ram and component during operation. This parameter adjustment ensures consistent full-surface contact between tool surfaces and component throughout the quenching process, maintaining both cooling performance and manufacturing precision
3Force
If a lever mechanism is inserted between the press ram and tool clamping plate to distribute force evenly, then force distribution improves, but device complexity increases
Solution Approach 1:
The spring-elastic adjusting elements enable the tool clamping plates to self-adjust and self-distribute forces automatically during pressing operations. Each tool clamping plate independently responds to force variations and tool distortions, eliminating the need for complex external force distribution mechanisms while maintaining even force distribution across all upper tools
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 solution reduces production tolerances, ensures consistent quenching temperatures, and shortens cooling times by maintaining complete contact between tool surfaces and components, resulting in improved hardness structure and cost-effective tool management.
Implementation Method 1
incorporates at least one spring-elastic adjusting element
Implementation Method 2
integrating cooling channels for enhanced heat transfer
Data Source
Figure 1
Figure 2
Figure 3a~3b
AI summary
The present invention relates to a press forming tool (101) comprising an upper tool (103) and a lower tool (104) which are movable towards each other and which, when the press forming tool (101) is closed, has a forming cavity (105) between the upper tool (103) and the lower tool (104), which is characterized in that a tool clamping plate (109) is/are arranged on a press ram (102) and/or a press table (108), wherein an upper tool (103) or lower tool (104) which is movable relative to the tool clamping plate (109) is mounted on the tool clamping plate (109) incorporating at least one spring-elastic actuating element (110).