표제지
목차
I. 서론 9
II. 연구내용 및 방법 11
2.1. 모델 선정 11
2.2. 피삭재 12
2.3. 실험장치 13
2.4. 나사규격 15
2.5. 공구 및 공구홀더 15
2.6. 절삭조건 17
2.7. NC Data 생성 18
2.8. NC Data 구성 19
2.9. 실험방법 21
2.10. 실험가공 22
2.11. 절삭 칩 25
III. 실험결과 및 고찰 26
3.1. 나사산 품질 26
3.2. 공구 마모 32
3.3. 경제성 분석 37
3.4. 적용사례 40
IV. 결론 47
참고문헌 48
Abstract 49
〈부록〉 51
Table 2-1. Mechanical composition of Ti-6Al-4V alloy 12
Table 2-2. Chemical composition of Ti-6Al-4V alloy 13
Table 2-3. Specification VM84H machining center 14
Table 2-4. Fine thread series 15
Table 3-1. A machine tooling expenses 37
Table 3-2. Cycle time 38
Table 3-3. Economic analysis 39
Fig. 2-1. CATIA model 11
Fig. 2-2. Dimensions of test sample 12
Fig. 2-3. VM84H machining center 14
Fig. 2-4. Insert tip 16
Fig. 2-5. Tool holder 16
Fig. 2-6. Hand taps 17
Fig. 2-7. Hyper mill 19
Fig. 2-8. NC data of tapping process 20
Fig. 2-9. Tapping NC data of detail A 20
Fig. 2-10. Automatic tapping process 21
Fig. 2-11. Workpiece before machining 22
Fig. 2-12.Completed the automatic tapping 23
Fig. 2-13. Manual tapping 23
Fig. 2-14. Completed the automatic tapping and manual tapping 24
Fig. 2-15. Chip shape of manual tapping 25
Fig. 3-1. Automatic tapping the 1st processing hole 26
Fig. 3-2. Automatic tapping the 2nd processing hole 27
Fig. 3-3. Automatic tapping the 3rd processing hole 27
Fig. 3-4. Automatic tapping the 4th processing hole 28
Fig. 3-5. Automatic tapping the 5th processing hole 28
Fig. 3-6. Manual tapping the 1st processing hole 29
Fig. 3-7. Manual tapping the 2nd processing hole 29
Fig. 3-8. Manual tapping the 3rd processing hole 30
Fig. 3-9. Manual tapping the 4th processing hole 30
Fig. 3-10. Manual tapping the 5th processing hole 31
Fig. 3-11. The insert tip 32
Fig. 3-12. The tip conditon of before using 33
Fig. 3-13. The tip conditon of after using 33
Fig. 3-14. After rough cutting 34
Fig. 3-15. After semi-finish cutting 35
Fig. 3-16. After finish cutting 36
Fig. 3-17. The aircraft part CATIA model 38
Fig. 3-18. The tip condition after 66-hole machining 39
Fig. 3-19. Verification process for improvement opportunities 41
Fig. 3-20. Top down process map 41
Fig. 3-21. Customer requirements 42
Fig. 3-22. Factors of potential 43
Fig. 3-23. Selected key factors 44
Fig. 3-24. Improvement of verification 45
Fig. 3-25. Improved results 46