Handheld Tool Optical Positioning for Precise Hole Spacing
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Solution Overview
Problem
Existing handheld tools require users to measure and ensure accurate distance of the working point to an object, which can be inaccurate and time-consuming, especially when precise positioning of holes or fastening elements is needed.
Innovation Solution
A handheld working tool equipped with a tool nose and an indicator that projects a reference line or point on the workpiece surface at a predetermined distance from the working point, using a light source and axicons to create a ring-shaped light beam, allowing for adjustable positioning to ensure accurate placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a user measures the distance manually using a rod before contacting the tool nose to the working point, then the distance measurement can be performed, but the process becomes inaccurate and time-consuming
Solution Approach 1:
The indicator projects the reference point onto the workpiece surface in advance, allowing the user to see the exact location before contacting the tool nose. This preliminary visualization eliminates the need for separate manual measurement steps and ensures accurate positioning from the start
Solution Approach 2:
The patent replaces manual mechanical measurement (using a rod) with an optical system (light source and projector) that automatically displays the reference point. This substitution provides both higher precision and faster operation, as the optical projection instantly shows the correct distance without manual intervention
2Manufacturing precision
If the indicator uses a light source and axicons to project a ring-shaped light beam, then the positioning precision is improved, but the device complexity increases
Solution Approach 1:
The patent uses axicons to transform a conventional light beam into a ring-shaped beam. The ring shape provides superior positioning precision because the circular geometry makes it easier to identify the center point accurately, and the ring structure is inherently more visible and easier to align than a simple spot or line
Solution Approach 2:
The patent changes the geometric parameter of the light beam from a conventional circular cross-section to a ring shape. This parameter change improves positioning precision by providing a more distinct reference geometry, while the complexity is managed by using standard optical components (axicons) that can be integrated into existing tool designs
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
Enables users to quickly and accurately determine the correct distance of the working point to an object, enhancing precision and efficiency in drilling or fastening operations.
Implementation Method 1
the projector comprises a first axicon having a first optical axis, wherein the first axicon turns the light beam emitted by the light source into a first ring-shaped light beam
Data Source
AI summary
A handheld working tool for treating a workpiece comprises a tool nose provided for contacting the workpiece at a working point, and an indicator provided for indicating a reference point on a surface of the workpiece at a predetermined distance to the working point when the tool nose contacts the workpiece at the working point.