서지주요정보
Z-map 모델을 이용한 사출금형 황삭가공용 NC 데이터 생성 = NC-data generation for molding die rough cutting using Z-map model
서명 / 저자 Z-map 모델을 이용한 사출금형 황삭가공용 NC 데이터 생성 = NC-data generation for molding die rough cutting using Z-map model / 김보현.
저자명 김보현 ; Kim, Bo-Hyun
발행사항 [대전 : 한국과학기술원, 1998].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8009177

소장위치/청구기호

학술문화관(문화관) 보존서고

DIE 98013

휴대폰 전송

도서상태

이용가능

대출가능

반납예정일

등록번호

9005007

소장위치/청구기호

서울 학위논문 서가

DIE 98013 c. 2

휴대폰 전송

도서상태

이용가능

대출가능

반납예정일

초록정보

Proposed in this thesis are 1) a global strategy for mold-cavity rough-cut machining, 2) a pocketing toolpath generation method using 2D cutting-simulation, and 3) a guide surface based toolpath generation method for high-speed machining. For mold-cavity rough-cut machining, the cavity volume is sliced into a number of cutting-layers by horizontal cutting-planes and each layer is pocket-machined using the contour-parallel offset method in which the tool-paths are obtained by repeatedly offsetting the boundary-pocketing curve. The two stage rough-cut machining consisted of rough pocketing and finish pocketing stage is generally used in mold-cavity rough-cut machining because most of row-stocks entered to molds shops are roughly pocket-machined in a outside supplier shop. The minimum number of drill-holes to be required for rough-cut machining is determined from the global die-cavity shape which is estimated from outer boundary pocket curves on each layer and the drill-holes are located at the points which have the total minimum distance from its location to the machining starting points on each layer. The major challenges in 2D pocket machining include: 1) finding a method for obtaining the boundary-pocketing curve, 2) generating evenly spaced contour-parallel offset tool-paths, 3) detecting and removing uncut-regions, and 4) estimating chip-loads for an adaptive feed control. No systematic solution for these problems has been offered in the literature, except the offset curves. Presented in the thesis is a straightforward approach to pocket machining, in which all the four challenges are handled successfully by using the existing cutting-simulation methods. The last part of the thesis is devoted to a new tool path generation method based on the guide surface, which takes the machining regions into consideration as well. The guide tool paths, which are parametrically defined on the guide surface directly constructed from the machining regions, are projected onto the ITO (inverse tool offset)-surface. The proposed method is also applied to generating spiral tool paths and helical tool paths which can be used for high-speed rough-cut machining.

서지기타정보

서지기타정보
청구기호 {DIE 98013
형태사항 vi, 78 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Bo-Hyun Kim
지도교수의 한글표기 : 최병규
지도교수의 영문표기 : Byoung-K. Choi
수록잡지명 : "Die-cavity pocketing via cutting simulation". Computer-Aided Design. Elsevier, vol. 29, no. 12, pp. 837-846 (1997)
학위논문 학위논문(박사) - 한국과학기술원 : 산업공학과,
서지주기 참고문헌 : p. 74-78
주제 황삭가공
포켓가공
윤곽평행옵셋곡선
모의가공
미가공영역
고속가공
와선형/나사선 경로
가이드곡면
Rough cutting
Pocket machining
Contour parallel offset curve
Cutting simulation uncut region
High-speed machinig
Spiral/helical path
Guide surface
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