Impact Head Lateral Expansion for Accurate High-Velocity Forming
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Solution Overview
Problem
In high velocity forming (HVF) processes, the impact head between the drive unit and the tool can heat up and deform, leading to interference with other apparatus parts, reduced tool accuracy, and decreased product quality.
Innovation Solution
The apparatus allows at least a region of the impact head to move laterally in relation to the tool, enabling the impact head to expand independently of the tool, thus accommodating temperature expansion without deforming the tool.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the impact head is fixed rigidly to the tool, then the structural simplicity is maintained, but the tool accuracy and product quality deteriorate due to thermal expansion deformation
Solution Approach 1:
The impact head is designed with a movable connection to the tool, allowing it to expand laterally independently when heated during repeated work cycles. This dynamic adjustment prevents deformation interference with the tool, maintaining forming accuracy while accommodating thermal expansion without requiring complex cooling systems or rigid constraints.
2Object-affected harmful factors
If the impact head is constrained to prevent lateral movement, then the interference with other parts is reduced, but the lifetime decreases due to accumulated thermal stress and deformation
Solution Approach 1:
The harmful thermal expansion of the impact head is extracted and isolated from the tool and other apparatus parts. By allowing the impact head to move laterally independently through a movable connection, the thermal expansion is directed away from critical components, preventing interference and deformation while extending the lifetime of the apparatus.
3Reliability
If the impact head is allowed to expand freely, then the lifetime is extended by reducing thermal stress, but the interference with other parts increases
Solution Approach 1:
A movable connection mechanism acts as an intermediary between the impact head and the tool. This intermediary allows the impact head to expand laterally when heated, accommodating thermal stress and extending lifetime, while simultaneously preventing the expansion from interfering with the tool and other apparatus parts by controlling the direction and extent of movement.
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 extends the lifetime of the apparatus by preventing tool deformation and maintaining product quality by ensuring that the impact head's temperature expansion does not affect the tool's accuracy or the forming process.
Implementation Method 1
At repeated work cycles of the apparatus, the impact head may heat up due to deformations at the stokes. Thereby, the material of the impact head may expand, leading to a deformation of the impact head.
Data Source
AI summary
The invention relates to an apparatus for material forming, by means of a tool (41) and a drive unit (2), the apparatus being arranged to move the drive unit (2) to provide kinetic energy to the tool (41), for the tool (41) to strike a work material (W), so as to form the work material (W), the apparatus being provided with an impact head (4″) between the drive unit (2) and the tool (41), and the apparatus being arranged to provide the kinetic energy to the tool by the drive unit (2) striking the impact head (4″), wherein at least a region of the impact head (4″) is allowed to move in relation to the tool (41) laterally to a direction of the stroke of the drive unit, whereby the impact head is arranged to expand laterally in relation to the tool. The invention also relates to a method for material forming.