Abstract
This paper proposes an evaluation method of a mechined shape with free-form surfaces and describes the basic way of thinking for the evaluation in which free-form surfaces are classified into a style surface and a function surface according to the application purpose. The evaluation items of a style surface and a function surface are determined as a unit normal vector and a positional vector respectively. The transformation from a designed shape to a machined shape is assumed as a model of a coordinate transformation, and the permitted transformations in the evaluations of a style surface and a function surface are clarified. The evaluation procedure based on the detection of positional vectors and unit normal vectors at sixteen arbitrary points on a patch of a machined surface is described in detail. In addition, the validity of the proposed evaluation method is examined by a computer simulation.
Original language | English |
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Pages (from-to) | 1651-1657 |
Number of pages | 7 |
Journal | Journal of the Japan Society for Precision Engineering |
Volume | 57 |
Issue number | 9 |
DOIs | |
Publication status | Published - 1991 Jan 1 |
Externally published | Yes |
Keywords
- CAD
- CAM
- evaluation
- free-form surface
- machined shape
- measurement
- positional vector
- style design
- unit normal vector
ASJC Scopus subject areas
- Mechanical Engineering