Oscillating Stamping Tool Insert for High-Speed Marking
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Solution Overview
Problem
Current marking methods for sheet metal parts on punching machines are time-consuming and inefficient, especially for surfaces requiring numerous points, limiting the machine's availability for other production tasks.
Innovation Solution
A tool with a drive mechanism that enables higher stroke frequencies for the marking pen by reducing the mass moved, allowing for an axial oscillating movement of the tool insert at frequencies up to 6000 min^-1, utilizing a ring gear with corrugated surfaces and rolling elements to convert rotary motion into axial oscillation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional marking methods with upper tool holder oscillation are used, then marking quality is maintained, but marking time is excessive and machine productivity is reduced
Solution Approach 1:
The tool is divided into a stationary upper tool holder and a separate oscillating tool insert. Only the lightweight tool insert (not the entire tool holder assembly) performs the oscillating marking motion, significantly reducing the moving mass and enabling higher stroke frequencies for faster marking
Solution Approach 2:
The tool insert is designed with dynamic oscillation capability through integrated drive mechanisms (electromagnetic, piezoelectric, or cam-based). This allows the marking tip to achieve high-frequency axial oscillations (up to 6000 strokes/min) while the upper tool holder remains stationary, dramatically improving marking speed
2Loss of time
If higher stroke frequencies are achieved by reducing moving mass, then marking time is reduced, but drive mechanism complexity increases
Solution Approach 1:
The conventional mechanical oscillation drive (rotating upper tool holder) is replaced with compact integrated drive mechanisms within the tool insert. Options include electromagnetic actuators, piezoelectric elements, or cam-based mechanisms that convert rotational motion to axial oscillation, all with significantly reduced moving mass compared to rotating the entire tool holder
Solution Approach 2:
The drive mechanism is nested within the tool insert structure itself. The oscillation generator (electromagnetic coil, piezoelectric element, or cam mechanism) is integrated into the tool insert housing, with the marking tip mounted on the oscillating component. This compact nested arrangement minimizes the tool insert's overall mass while containing the necessary drive complexity within a small volume
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
Significantly reduces the time required for marking while maintaining quality, allowing the punching machine to be more productive by increasing the frequency of marking operations without increasing the mass moved.
Implementation Method 1
the drive mechanism (25, 26, 28) converts a rotary movement into an axial, oscillating movement
Implementation Method 2
utilizing a ring gear with corrugated surfaces and rolling elements to convert rotary motion into axial oscillation
Data Source
Figure 1
Figure 2
Figure 2a
AI summary
The tool has a tool element (41) for receiving a punching machine in a tool receiver, and oscillated tool inserts (24) movably mounted in the tool element in a direction of an axle (20). The oscillated tool inserts includes a drive mechanism for movement, where the drive mechanism is provided with an internal gear (26) that is rotatably mounted at the axle. The drive mechanism includes a mechanical unit that is adapted to change rotational movement of the internal gear at the axle in the oscillated motion of the oscillated tool inserts.