Press Damping Device for Sheet Metal Forming
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing press technologies for forming sheet metal face challenges with elaborate and technically complicated damping devices that fail to effectively compensate for dimensional variations in press elements due to temperature fluctuations and manufacturing tolerances, leading to uneven holding or deformation of sheet metal parts.
Innovation Solution
A damping device comprising a retaining piece, pressure piece, and damping element with a preload, arranged between a press element and an additional element, compensates for dimensional fluctuations through elastic dimensional change along a longitudinal axis without play, using a mechanically simple design with adjustable preload force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hydraulic damping devices or active adjustment mechanisms are used to compensate for dimensional variations, then compensation effectiveness is improved, but device complexity increases
Solution Approach 1:
The invention extracts and eliminates complex hydraulic systems, electronic controls, and adjustment mechanisms from the damping device. Instead, it uses a simple elastic element (spring) that passively compensates for dimensional variations through its inherent elastic properties, achieving reliable compensation without technical complexity
Solution Approach 2:
The elastic element automatically compensates for dimensional variations in press bolts or press stamps through its elastic deformation and recovery, without requiring external control systems, power sources, or manual adjustments. The system serves itself by utilizing the natural elastic properties of the material
2Reliability
If elaborate damping devices with multiple components are used, then dimensional variation compensation is improved, but ease of manufacture deteriorates
Solution Approach 1:
The damping device is segmented into three simple, modular components: a retaining piece for mounting, a pressure piece for force application, and an elastic element for compensation. This segmentation allows each component to be manufactured independently using simple processes and assembled easily, improving ease of manufacture while maintaining compensation effectiveness
Solution Approach 2:
The invention uses inexpensive elastic elements (such as rubber or spring components) that can be easily manufactured and replaced if needed. These simple components are much easier and cheaper to manufacture than hydraulic systems or electronic actuators, while providing sufficient compensation for dimensional variations
3Device complexity
If traditional damping devices without preload are used, then device simplicity is maintained, but manufacturing precision deteriorates due to play and backlash
Solution Approach 1:
The elastic element is preloaded (pre-compressed or pre-stretched) during assembly to eliminate gaps and play between components. This preliminary action ensures that the damping device starts in a state of constant contact with no backlash, maintaining high manufacturing precision throughout the pressing operation while keeping the device structure simple
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 solution provides a compact, easy-to-maintain damping device that compensates for dimensional variations without mechanical complexity, ensuring secure and precise sheet metal forming by eliminating backlash and allowing for interchangeable components.
Implementation Method 1
the damping element is arranged between the press element and the pressure piece by means of the retaining piece with a preload applied along the longitudinal axis and compensates for the dimensional fluctuations during the pressing process without play by means of an elastic dimensional change along the longitudinal axis
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The invention relates to a press element of a press, in particular a press for forming sheet metal, with a damping device for compensating for dimensional fluctuations between an extended end position and a shortened end position between the press element and an additional element associated with the press element during a pressing operation along a longitudinal axis, wherein the damping device is arranged between the press element and the associated additional element during the pressing operation, wherein the damping device comprises a retaining piece, a pressure piece and a damping element, wherein the retaining piece is fixed to the press element.The pressure piece is assigned to the additional element during the pressing process, and the pressure piece is held by the retaining piece on the pressing element by means of a first limiting device, and the damping element is arranged between the pressing element and the pressure piece by means of the retaining piece with a preload applied along the longitudinal axis, and compensates for the dimensional fluctuation during the pressing process without play by means of an elastic dimensional change along the longitudinal axis, characterized in that the retaining piece has an opening extending along the longitudinal axis, wherein the pressure piece is mechanically contacted with the additional element through the opening of the retaining piece, wherein the retaining piece overlaps the pressure piece to form the first limiting device, in particular at a circumference of the opening.