Ertan Toparlak 4th Week Missed Terms

1-Implicit Features: Implicit features are sometimes called unevaluated or procedural features. They are unambiguously defined, for example by a generic description and a number of parameters for the specific occurrence, but are not evaluated into an explicit geometrical description.This type of features can be categorised as Cosmetic features.There can be four types of cosmetic features: sketched, thread, groove, and user-defined.Sketched cosmetic features are “drawn” on the surface of a part. They include such things as company logos or serial numbers that are stamped on a part.

(INTEGRATING ADVANCED COMPUTER-AİDED DESIGN, MANUFACTURING, AND NUMERICAL CONTROL:PRINCIPLES AND IMPLEMENTATIONS-1st Edition-Xun Xu-Chapter 7-P.151)

2-Coordinate System for NC machines:For CNC machining centres, the XY plane usually defines a horizontal plane for a machining centre. Two machining centre’s axes, X and Y. The Z axis behaves in exactly the same manner as X and Y. When taken all together, the X, Y, and Z give you a three dimensional grid. It is within this grid that you will position (using coordinates) your tools for machining operations.

(INTEGRATING ADVANCED COMPUTER-AİDED DESIGN, MANUFACTURING, AND NUMERICAL CONTROL:PRINCIPLES AND IMPLEMENTATIONS-1st Edition-Xun Xu-Chapter 9-P.192)

3-BNCL effort:Base Numerical Control Language (BNCL) is based on a low-level simple instruction set-like approach The entire architecture is designed around two concepts the BNCL Virtual Machine (BVM) and the BNCL Virtual Hardware (BVH). The former acts as a virtual microprocessor and the latter is an abstraction of the machine tool.The BNCL architecture is proposed to improve information flow between CAM and CNC through a low-level approach to machine control.BNCL has been developed as a low-level language. It is a new architecture designed with machine control in mind. This language mimics the binary syntax of the instruction set of a microprocessor.

(INTEGRATING ADVANCED COMPUTER-AİDED DESIGN, MANUFACTURING, AND NUMERICAL CONTROL:PRINCIPLES AND IMPLEMENTATIONS-1st Edition-Xun Xu-Chapter 10-P.241)

4-Feature mapping: Unidirectional mapping from design features to machining features. The majority of these mappings are of the one-to-one type where a design feature can be directly and exclusively related to a machining feature.

(INTEGRATING ADVANCED COMPUTER-AİDED DESIGN, MANUFACTURING, AND NUMERICAL CONTROL:PRINCIPLES AND IMPLEMENTATIONS-1st Edition-Xun Xu-Chapter 7-P.152)

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