Robot-Mounted Laser Head Gauge Setup for Focal Position Alignment
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Solution Overview
Problem
Conventional laser processing devices without Galvanometer scanners face challenges in precisely adjusting the focal position of a laser beam, making the process costly and complex, and the method using a slit and pinhole is difficult to implement accurately.
Innovation Solution
A laser processing device with a laser oscillator, a laser head mounted on an articulated robot, and a connector component with a gauge attachment portion that allows for precise adjustment of the focal position by emitting a guide laser beam and determining its alignment with a reference point on a gauge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a Galvanometer scanner is used to adjust the focal position of the laser beam, then the focal position can be adjusted precisely, but the device becomes expensive
Solution Approach 1:
The patent uses a guide laser beam as a simple, inexpensive copy or representation of the actual laser beam to indicate the focal position. This guide beam allows operators to visually determine where the focal point is located without requiring complex Galvanometer scanners, thereby achieving precise focal position adjustment while avoiding high device costs
Solution Approach 2:
The guide laser beam serves as an intermediary element between the actual laser beam and the operator's perception. It provides visual feedback about the focal position without requiring direct measurement equipment or complex scanning mechanisms, thus resolving the contradiction between precision and cost
2Device complexity
If the laser head is moved to match the focal position without a Galvanometer scanner, then the device cost is reduced, but the adjustment process becomes troublesome and complicated
Solution Approach 1:
The guide laser beam provides self-service by automatically indicating the focal position without requiring external measurement equipment or complex adjustment procedures. The operator can directly observe where the guide beam focuses and adjust accordingly, making the process simple and intuitive while maintaining low device cost
3Measurement precision
If a jig with slit and pinhole is used to adjust focal position, then focal position can be measured, but the positioning becomes difficult to achieve highly precisely
Solution Approach 1:
Instead of using a complex jig with slit and pinhole that requires precise positioning, the patent employs a guide laser beam that naturally indicates the focal position through its convergence point. This copying approach eliminates the need for difficult-to-position mechanical jigs while maintaining measurement precision
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 precise and cost-effective adjustment of the laser beam focal position using a simple and inexpensive structure, reducing maintenance time and costs by allowing for easy checking and adjustment of the focal position without modifying the operation program.
Implementation Method 1
a laser oscillator that generates at least a laser beam
Data Source
AI summary
Laser processing device (100) includes a laser oscillator that generates laser beam (LB), laser head (60) that irradiates a workpiece with laser beam (LB), and manipulator (40) on which laser head (60) is mounted. Manipulator (40) includes robot arm (41), arm tip shaft (J6) provided at a tip of robot arm (41) in a manner rotatable about axis (RA), and connector component (50) that connects arm tip shaft (J6) and laser head (60). Connector component (50) is provided with gauge attachment portion (51a) to which gauge (80) is attached removably. Gauge (80) has a reference point corresponding to the focal position of laser beam (LB).