Rotational and Translational Micropositioning Apparatus for Probe Angle Control
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Solution Overview
Problem
Existing micropositioning devices, such as XYZ micromanipulators, are limited in their ability to change the angle of approach of a probe without requiring manual repositioning, which hinders precision and productivity in applications like biology, semiconductors, and fiber optics.
Innovation Solution
A novel rotational and translational micropositioning apparatus featuring two rotary motors and a linear motor, with a rigid link and mounting plate configuration, allows the probe to maintain juxtaposition with a virtual point for any angle of approach, eliminating the need for manual repositioning by enabling infinite positioning adjustments within a conical space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual repositioning is used to change the angle of approach, then the probe can be repositioned to different locations, but productivity decreases and time is lost due to manual intervention
Solution Approach 1:
The system performs automatic repositioning of the probe through computer-controlled XYZ micropositioner and rotational device, eliminating the need for manual intervention. The computer automatically calculates and executes the repositioning commands based on the desired angle of approach, making the system self-sufficient and improving productivity.
Solution Approach 2:
The system dynamically adjusts the angle of approach by rotating the probe holder through a rotational device with variable angular positions. This dynamic capability allows the probe to approach the workpiece from any angle within the rotational range, providing flexibility without manual repositioning and maintaining high productivity.
2Adaptability or versatility
If the angle of approach is pre-set to coincide with orthogonal axes, then the device structure is simplified, but adaptability decreases when different angles are needed
Solution Approach 1:
The XYZ micropositioner combined with the rotational device creates a universal positioning system that can achieve any angle of approach (both orthogonal and non-orthogonal angles). The rotational device allows the probe holder to rotate about an axis, enabling the probe to approach the workpiece from any direction within the rotational range, making the system multi-functional and highly adaptable.
Solution Approach 2:
The system adds a rotational dimension to the traditional three-axis XYZ micropositioner. By introducing the rotational device that allows angular adjustment of the probe holder, the system transitions from a fixed three-dimensional positioning to a four-dimensional positioning capability (X, Y, Z coordinates plus angular orientation), enabling approach from any angle while maintaining manageable device complexity through modular design.
3Measurement precision
If manual repositioning is required for angle changes, then the positioning system remains simple, but precision decreases due to manual intervention errors
Solution Approach 1:
The computer-controlled system provides precise positioning by automatically calculating the required movements and controlling the XYZ micropositioner and rotational device accordingly. The system can accurately determine the new position based on the desired angle of approach and execute the repositioning with high precision, eliminating manual positioning errors while maintaining ease of operation through automated control.
Solution Approach 2:
The system replaces manual mechanical repositioning with computer-controlled automation. The computer calculates and controls the XYZ micropositioner and rotational device, substituting human manual operation with automated computational control. This substitution improves positioning precision by eliminating manual intervention errors while maintaining ease of operation through simple computer-based control interfaces.
Data Source
AI summary
A rotational and translational microposition apparatus includes a first rotary motor, a second rotary motor and a linear motor. The first rotary motor surmounts an upstanding bracket mounted to a support surface. A rigid link having a right angle bend formed in it interconnects the first and second rotary motors to one another. A first end of the rigid link is secured to an output shaft of the first rotary motor and a second end of the rigid link is secured to a mounting plate to which is secured the second rotary motor. A linear motor has an output shaft connected to the output shaft of the second rotary motor. Selective operation of the three motors enables a probe to be positioned in an infinite plurality of positions that collectively form a cone where the tip of the probe is coincident with the vertex of the cone.