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Tel : (65) 6793 8360
Email :
ahcheong@SIMTech.a-star.edu.sg


Dynamic NC Verification and Optimisation

Technology Description
Dynamic Numerical Control (NC) Verification and Optimisation is a software system based on a patented geometry representation being used in the efficient machining of tools and parts.

Working towards a vision of pervasive modelling and simulation, a unified inprocess geometry model for multiple machining and layered manufacturing simulations is needed for smart adaptive machining and virtual training applications. This is the foundation of next generation Smart Adaptive Machining.


Specifications & Features
The system starts with a solid model of the machined part and quickly simulates and optimises machining processes. NC code could be selectively and reversely post processed into 3D tool-path graphic displays and interactively viewed, edited, and optimised.

The user can highlight or hide operation, tool path, or layer or select to display and edit a certain layer of tool-path. Tool-paths and cutting results can be viewed from any viewpoint and checked automatically.

The machined parts are compared with the design parts for the remaining stock and over-cuts. Error-free tool paths are created, eliminating the need for a time-consuming test cut.


Applications & Markets
SIMTech has built a solid foundation of unified geometry model that could be implemented pervasively throughout the life cycle of the manufacturing processes. For example, in the repair of aerospace components such as turbine blade, the machining stock geometry is not always ideal and subjects to changes like warp and wear. The repair process may build new material layer-by-layer on the surface.

Modelling and simulating these warp geometry and cladding or welding processes are critical to effectively machine repaired parts. Incorporating smart machining function essentially adds intelligence to the machine tool.

The technology is suitable for machine tool NC tool path simulation, verification and optimisation for the aerospace, marine, automotive, electronics and precision engineering industries.


Advantages
Based on the machining model and measured geometry data, the software knows the exact shape of the in-process part at every instant of the machining sequence.

Machining simulation is based on the exact depth, width and angle of each cut into the part. This allows calculation of the exact shape of the cutter contact with the material and the amount of material being removed by each cut segment.

With this unique knowledge set, machining optimisation determines the best feed rate for each cutting condition encountered, taking into account the volume of material removed, chip load, and machine acceleration and deceleration requirements. As a result, this “Quick -What You See is What You Cut “ process improves productivity due to reduced operator errors and ease of use on the shop-floor.


Patents
  1. An Object Representation Method PCT Patent Application Filed October 2002
  2. Mould Design Method and System PCT Patent Application Filed October 2002
SIMTech Technologies/ Capabilities
SIMTech has built a solid foundation of unified geometry model that can be implemented pervasively throughout the life cycle of the manufacturing processes.

Based on this patented technique, SIMTech has developed several practical applications for mould manufacturers. these include QuickSeeNC, QuickPCB, and PartingAdviser, which provide “What You See is What You Cut” functionality for shopfloor machine operators and mould designers. QuickSeeNC and QuickPCB have been adopted by SMEs and MNCs for their speed and simplicity.
For more information, please contact:
Dr Zheng Hongyu
Email :
Tel: 6793 2450