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국회도서관 홈으로 정보검색 소장정보 검색

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Nomenclatures 11

ABSTRACT 12

제1장 서론 14

1.1. 연구배경 및 연구동향 14

1.2. 연구목적 및 내용 15

제2장 이론적 배경 16

2.1. 가공면의 표면거칠기 16

2.1.1. 이론 표면거칠기 17

1) 인선 반지름 R=0인 경우 17

2) 인선 반지름 R≠0인 경우 18

2.1.2. 실제 표면거칠기 20

2.2. AFM에 의한 초정밀 가공면의 측정 22

2.3. 절삭공구 마모이론 24

2.4. 초정밀가공 이론 27

제3장 실험장치 및 방법 30

3.1. 실험장치 30

3.2. 실험 방법 37

3.3. AFM 측정에 의한 가공면 특성 평가 39

제4장 실험결과 및 고찰 42

4.1. 공구인선 마모현상 고찰 42

4.2. 가공면 표면 거칠기 특성 고찰 44

4.3. AFM 측정에 의한 표면특성 고찰 51

제5장 결론 62

References 63

List of Table

Table 2.1. Comparison accuracy of test turning center 28

Table 2.2. Comparison components of test turning center 29

Table 3.1. Specifications of test machines 31

Table 3.2. Specifications of roughness tester 32

Table 3.3. Specification of experimental equipments 34

Table 3.4. Specifications of abrasive cutting machine 35

Table 3.5. Specifications of atomic force microscope 36

Table 3.6. Cutting conditions 37

Table 3.7. Chemical compositions of brass (HBsC3C) 37

Table 4.1. Measured nose radius values of cutting tool 43

Table 4.2. Surface roughness values of brass metal 45

List of Figure

Fig. 2.1. Average arithmetic roughness 16

Fig. 2.2. Maximum height roughness 17

Fig. 2.3. Surface roughness of vertical radius R=0 18

Fig. 2.4. Surface roughness of vertical radius R ≠0 19

Fig. 2.5. Surface generation of ideal conditions 21

Fig. 2.6. Effect of minimum chip thickness on surface roughness 21

Fig. 2.7. Principle of AFM equipment 22

Fig. 2.8. Atomic force and distance 23

Fig. 2.9. Contact area analysis 25

Fig. 2.10. Flank and crater wear 26

Fig. 3.1. AFM photograph for select magnification (Scan size 20 ㎛) 40

Fig. 3.2. AFM photograph for select magnification (Scan size 60 ㎛) 40

Fig. 3.3. AFM photograph for select magnification (Scan size 100 ㎛) 41

Fig. 4.1. Measured nose radius values of cutting tool 43

Fig. 4.2. Measued surface roughness values 45

Fig. 4.3. Measured surface roughness (50km) 46

Fig. 4.4. Measured surface roughness (100km) 46

Fig. 4.5. Measured surface roughness (150km) 47

Fig. 4.6. Measured surface roughness (200km) 47

Fig. 4.7. Measured surface roughness (250km) 48

Fig. 4.8. Measured surface roughness (300km) 48

Fig. 4.9. Measured surface roughness (350km) 49

Fig. 4.10. Measured surface roughness (400km) 49

Fig. 4.11. Measured surface roughness (450km) 50

Fig. 4.12. Measured surface roughness (500km) 50

Fig. 4.13. AFM photo. of cutting surface (HBsC3C/ 50km) 52

Fig. 4.14. AFM photo. of cutting surface (HBsC3C/ 100km) 53

Fig. 4.15. AFM photo. of cutting surface (HBsC3C/ 150km) 54

Fig. 4.16. AFM photo. of cutting surface (HBsC3C/ 200km) 55

Fig. 4.17. AFM photo. of cutting surface (HBsC3C/ 250km) 56

Fig. 4.18. AFM photo. of cutting surface (HBsC3C/ 300km) 57

Fig. 4.19. AFM photo. of cutting surface (HBsC3C/ 350km) 58

Fig. 4.20. AFM photo. of cutting surface (HBsC3C/ 400km) 59

Fig. 4.21. AFM photo. of cutting surface (HBsC3C/ 450km) 60

Fig. 4.22. AFM photo. of cutting surface (HBsC3C/ 500km) 61

List of Photograph

Photo. 3.1. Ultra-precision turning center(H-M64L CNC) 31

Photo. 3.2. Surface roughness tester (Talysurf- 253) 32

Photo. 3.3. Metallurgical microscope 33

Photo. 3.4. Tool maker's microscope 34

Photo. 3.5. Abrasive cutting machine 35

Photo. 3.6. Atomic force microscope 36

Photo. 3.7. Diamond tools 38

Photo. 3.8. Measured AFM specimens 39

Photo. 4.1. Diamond new tool & used tool 43