표제지
목차
I. 서론 9
1.1. 연구배경 9
1.2. 타이타늄 소재 특성 11
1.3. 연구목적 12
II. 실험내용 및 방법 13
2.1. 실험대상 13
2.2. 실험소재 14
2.3. 실험장치 16
2.4. 실험 치공구 18
2.5. 실험 절삭공구 20
2.6. 실험 절삭조건 22
2.7. NC 데이터 생성 24
2.8. 로우앵글 가공 공정 26
III. 실험결과 및 고찰 28
3.1. 실험목표 28
3.1.1. 실험내용 28
3.2. 실험진행 28
3.2.1. 공정분류 28
3.2.2. 장비분류 28
3.2.3. 치공구 사용 29
3.2.4. 실험 가공 프로세스 29
3.3. 실험결과 33
3.3.1. 가공변형 33
3.3.2. 치공구개선 36
3.4. 가공변형원인 분석 및 공정 최적학 37
3.4.1. 가공변형원인 분석 37
3.4.2. 공정 최적학 37
3.5. 공정 최적학 적용 결과 44
3.5.1. 가공변형량 감소 44
3.5.2. 가공변형을 고려한 로우앵글 가공공정 46
IV. 결론 48
참고문헌 50
요약 53
ABSTRACT 54
Table 2.1. Specification of CINCINNATI 20V-80 machine 16
Table 2.2. Specification of DMG-210P machine 17
Table 2.3. Process conditions by cutting 23
Table 3.1. Flatness requirement sheet 35
Table 3.2. Improving machine process flatness requirement sheet 44
Fig. 1.1. The lower angle component of an aircraft 10
Fig. 2.1. Test model of lower angle 13
Fig. 2.2. 3D model of titanium die forging 14
Fig. 2.3. Shape of forging material 14
Fig. 2.4. Dimensions of die forging 15
Fig. 2.5. 5axis machine of CINCINNATI 20V-80 16
Fig. 2.6. 5axis machine of DMG-210P 17
Fig. 2.7. Fixture model of MLFX#01 18
Fig. 2.8. MLFX#01 18
Fig. 2.9. Fixture model of index block 19
Fig. 2.10. Fixture model of MLFX#03 19
Fig. 2.11. MLFX#03 19
Fig. 2.12. Carbide solid endmill 20
Fig. 2.13. Carbide insert cutter 21
Fig. 2.14. High speed steel(HSS) roughing endmill 21
Fig. 2.15. Creation tool path of process 1st stage(이미지참조) 24
Fig. 2.16. Machining simulation of process 1st stage(이미지참조) 24
Fig. 2.17. Creation tool path of process 3rd stage(이미지참조) 25
Fig. 2.18. Machining simulation of process 3rd stage(이미지참조) 25
Fig. 2.19. Machining process 26
Fig. 2.20. Flow chart of Titanium forging machining process 27
Fig. 3.1. NC machining 1st stage(이미지참조) 30
Fig. 3.2. NC machining 2nd stage(이미지참조) 30
Fig. 3.3. NC machining 3rd stage(이미지참조) 31
Fig. 3.4. NC machining 4th stage(이미지참조) 31
Fig. 3.5. Manufacturing process 32
Fig. 3.6. Type of process transformation occurrence 33
Fig. 3.7. Filler gage for gap check 34
Fig. 3.8. View of gap check 34
Fig. 3.9. Flatness measure of all stage 35
Fig. 3.10. 1st stage of improving machine process(이미지참조) 38
Fig. 3.11. 2nd stage of improving machine process(이미지참조) 38
Fig. 3.12. 3rd stage of improving machine process(이미지참조) 39
Fig. 3.13. 4th stage of improving machine process(이미지참조) 39
Fig. 3.14. 5th stage of improving machine process(이미지참조) 40
Fig. 3.15. Concentration of the workpiece stress from the contour 40
Fig. 3.16. Add 2nd stage process chamfer roughing path(이미지참조) 41
Fig. 3.17. Actual product photos after 2nd stage prodess(이미지참조) 41
Fig. 3.18. MLFX#03 of 5th stage(이미지참조) 42
Fig. 3.19. Improving manufacturing process 43
Fig. 3.20. Flatness comparison after process improvement all stage 45
Fig. 3.21. Improvement machining process 46
Fig. 3.22. Final flow chart of titanium forging machining process 47