Gear-Driven Marker Light Positioning for Linear Accuracy
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Solution Overview
Problem
Existing marking devices for workpieces lack precision in specifying position markings on support surfaces, requiring corrections and additional operations to achieve accurate positioning, especially at larger angles and varying angles of incidence.
Innovation Solution
A marking device with a gear system that converts rotary movement into a pivoting movement of the marker light with minimal deviation (less than 10%), utilizing a coupling element like an articulated push arm and a guide area to maintain linearity, allowing for high position resolution without the need for user corrections, and incorporating a method for calibrating support positions to improve marking accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a rotary drive device is directly connected to a marker light, then the structure is simple, but the position resolution and marking precision deteriorate due to non-linear movement at larger angles
Solution Approach 1:
A coupling element is introduced as an intermediary between the rotary drive device and the marker light. This coupling element converts the rotary movement into a pivoting movement with minimal deviation from linearity, thereby improving position resolution without requiring complex correction mechanisms.
Solution Approach 2:
The coupling element transforms the rotational movement from one dimension into a pivoting movement in another dimension, achieving a more linear relationship between drive device rotation and marker light position, especially at larger angles.
2Manufacturing precision
If the marker light strikes the bearing surface at a steep angle, then the marking precision improves, but the position resolution deteriorates due to reduced sensitivity to rotational movement changes
Solution Approach 1:
The coupling element changes the geometric parameters of the transmission system, creating a mechanical advantage that amplifies the effect of rotational movement on marker light position when striking at steep angles, thereby maintaining position resolution across varying angles of incidence.
3Measurement precision
If multiple coupling elements are used to improve linearity, then the position resolution improves, but the device complexity and transmission overdetermination increase
Solution Approach 1:
The patent extracts and eliminates unnecessary coupling elements from the transmission system, retaining only the essential coupling element that provides the necessary linearization function. This avoids kinematic overdetermination while maintaining high position resolution.
4Adaptability or versatility
If user correction operations are required to compensate for non-linearity, then adaptability improves, but the ease of operation and productivity deteriorate
Solution Approach 1:
The coupling element is designed to automatically compensate for non-linearities in the transmission system, making the marking device self-correcting. This eliminates the need for user intervention or correction operations, thereby improving productivity while maintaining adaptability.
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 precise and accurate position marking on support surfaces with reduced linearity deviation, eliminating the need for user corrections and ensuring consistent marking performance across various angles, thereby enhancing the specification of position markings in sewing systems.
Implementation Method 1
a gear is provided for converting a rotary movement of a drive device into a pivoting movement of a marker light
Implementation Method 2
Exactly one coupling element is present, which mediates between a rotary movement of the drive device and the pivoting movement of the marker light
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
Marking device (1) for specifying a position marking (16) on a support surface (17) for a workpiece, comprising a drive unit (3) for pivoting a marking lamp (4), a marking lamp (4) for generating a light marking, and a gearbox (5) for converting a rotary movement of the drive unit (3) into a pivoting movement of the marking lamp (4), wherein the drive unit (3) is operatively connected to the marking lamp (4) via the gearbox (5) in such a way that a resulting movement of the position marking (16) on the support surface (17) depends linearly on a rotation angle of the rotary movement of the drive unit (3) with a deviation of less than 10%.