MFE201TC-Principal of Mechanical Design 2025/2026
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MFE201TC-Principal of Mechanical Design 2025/2026
PROJECT DESCRIPTION
CW001 Problem-Based Assessment
High-Precision Three-Axis Motion Platform
Project Overview:
Design a high-precision three-axis motion platform for precise positioning and controlled movement in various applications, such as research laboratories, manufacturing processes, and automation systems. The motion platform should be capable of accurately controlling motion along the X, Y, and Z axes while maintaining exceptional stability and repeatability.
Design task:
The system should position the load with an accuracy of +/-5μm. The system is to be placed on an optical table (with an array of M6 tapped holes). An example of a three-axes positioning system is shown in Figure 1. The geometry of the steel part is shown in Figure 2.
Table 1: Specification requirements for the motion control application.
|
Axis X travel range |
600mm |
|
Axis Y travel range |
300mm |
|
Axis Z travel range |
150mm |
|
Maximum travel duration (all axis) |
3 seconds |
|
Linear accuracy (all axis) |
+/-5μm |
Figure 1: Overall application configuration.
Figure 2: Schematic of the steel part to be laser heat treated. All dimensions are in millimetre.
Deliverables: Group Report on Design Choices
1. Literature Review (Group Task): Conduct an in-depth review of various methods for high- precision 3-axis motion control and explore their applications in high-precision motion platforms.
2. Load Calculations and Bearing Selection (Individual Task for Each Axis): Perform load calculations and select appropriate linear bearings for the x-, y-, and z-axes using manufacturer catalogues.
3. Torque and Load Analysis for Lead-Screw (Individual Task for Each Axis): Calculate the torque and load for the lead-screw and nut assembly, including the selection of screw type (pitch, diameter) and mounting configuration (bearings) for all axes, based on manufacturer data.
4. Deflection Analysis (Individual Task for Each Axis): Conduct a deflection analysis for the x-, y-, and z-axis stages using numerical simulation software.
5. 3D CAD Model (Group): Develop a 3D CAD model illustrating the overall architecture of the design.
Note: Ensure all details align with the marking criteria.
Coursework submission deadline: 11:00PM, December 25th, 2025 by Assignment Dropbox from LearningMall.
2025-12-25
High-Precision Three-Axis Motion Platform