SAMCHULLY SMD Series Instruction Manual page 15

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- 드릴링은 각재질에 따라 부록을 참고하여 적정한 회전수를 선정
하십시오.
- 절삭 속도에 의한 회전수는 아래에 따라 구합니다.
드릴 회전수 표준치 / Drill RPM sandard
표준절삭속도
Standard cutting speed
(m/min)
드릴경
Drill dia.
(mm)
3
4
5
6
8
10
12
14
16
19
π×D×N
V=
1,000
1,000×N
N=
π×D
연강
반경강
경강
Mild steel
Semi-hard steel
Hard steel
23
17
12
연강
반경강
경강
Mild steel
Semi-hard steel
Hard steel
-
1,800
1,270
1,800
1,350
960
1,460
1,080
760
1,220
900
640
920
680
480
730
540
380
610
450
320
520
390
270
460
340
240
380
280
200
- Refer to the appendix by each material and determine the proper
rpm for drilling.
- The rpm by cutting speed is calculated as follows:
N : 분당 회전수 / RPM per min.
(RPM)
V : 절삭속도 / Cutting speed
(m/min)
D : 드릴직경 / Drill dia.
(mm)
연주철
경주철
Mild cast iron
Hard cast iron
28
22
연주철
경주철
Mild cast iron
Hard cast iron
-
-
-
1,750
1,800
1,400
1,500
1,170
1,110
880
890
700
740
580
640
500
560
440
470
370
황동
알루미늄
Brass
Aluminum
55
75
(RPM)
황동
알루미늄
Brass
Aluminum
-
-
-
-
-
-
-
-
-
-
1,750
-
1,460
2,000
1,250
1,700
1,100
1,500
920
1,250
Instruction Manual
15

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