Publicité
Les langues disponibles
Les langues disponibles
Anleitung_BT_MR_550_SPK7:_
GB
7. Operation and adjustment
Important: Always unplug the power plug before
making any adjustments to the machine.
7.1 Setting the rotational speed (Figs. 3-4)
Use the gear lever (5) on the machine side to choose
between two speed ranges.
Front position (L) for the rotational speed rang
50 to 1100 min
-1
Rear position (H) for the rotational speed range
120 to 2500 min
-1
Important: Do not change rotational speed ranges
(L and H) while the spindle is running! The rotational
speed can be adjusted infinitely within the speed
range. Use the speed selector switch (6) to finely
adjust the rotational speed.
7.2 Correct rotational speed / cutting speed
The choice of the correct cutting speed has an
enormous effect on the service life of the tool and on
the work results. The right speed depends on the
material. If the chosen rotational speed is correct, the
cutting speed will also be correct.
7.2.1 Drilling
Rule of thumb: The smaller the hole and the softer
the material, the higher the speed of rotation.
The table below will help you select the proper speed
for the various materials.
Note: The rotational speeds shown are merely
suggested values.
To adjust the speed, see chapter 7.1.
Drill bit Ø Cast iron
Steel
Iron
Aluminium
Bronze
3
2550
1600
2230
9500
4
1900
1200
1680
7200
5
1530
955
1340
5700
6
1270
800
1100
4800
7
1090
680
960
4100
8
960
600
840
3600
9
850
530
740
3200
10
765
480
670
2860
11
700
435
610
2600
12
640
400
560
2400
13
590
370
515
2200
14
545
340
480
2000
16
480
300
420
1800
18
425
265
370
1600
20
380
240
335
1400
18
18.12.2007
15:44 Uhr
Seite 18
All manuals and user guides at all-guides.com
22
350
220
305
1300
25
305
190
270
1150
7.2.2 Routing
The rotational speed can be calculated as follows:
n = v / ( x d )
n = rotational speed in min -1
v = cutting speed in m/min
d = tool diameter in m
= 3.14
The values for the cutting speeds and maximum
cutting depths for the relevant material are given in
the list below or in a book of tables.
High-speed steel
cutting
Cutting
Tensile
Material
depth
Cutting speed
depth
strength
a [mm]
v [m/min]
a [mm]
0,5
70 - 50
1
500 - 700
3
50 - 30
6
Gen.
10
30 - 20
10
Structural
0,5
45 - 30
1
steel; tool
700 - 900
3
30 - 20
6
steel; case-
10
18 - 12
10
hardened
0,5
30 - 20
1
and
900 - 1100
3
20 - 15
6
tempered
10
18 - 10
10
steel; cast
-
-
1
steel
1100 - 1400
-
-
3
-
-
6
Free-cutting
0,5
90 - 40
1
700
steel
3
75 - 30
3
0,5
45 - 35
1
200
3
35 - 25
3
Gray cast
10
20 - 15
10
iron
0,5
40 - 30
1
200 - 400
3
30 - 20
3
0,5
70 - 45
1
Blackheart
350
3
60 - 40
3
iron
6
40 - 20
6
White
0,5
60 - 40
1
malleable
350 - 400
3
50 - 35
3
6
35 - 20
6
iron
0,5
180 - 160
0,5
60 - 320
3
160 - 140
3
6
140 - 120
6
Aluminium
1
140 - 100
1
alloys
320 - 440
6
120 - 80
6
-
-
1
440 +
-
-
6
8000
3
150 - 100
3
200 - 400
Copper
6
120 - 70
6
6000
3
100 - 55
3
alloys
400 - 800
4800
6
55 - 35
6
7.3 Clamping the tools (Figs. 3,4,6-8)
4000
Only tools, clamping fixtures or tool chucks with
3400
Morse taper MK3 and internal thread M12 may be
3000
used to ensure positive fixing in the work spindle.
2650
Reducing bushes must not be used!
2400
2170
7.3.1 Clamping tools in the work spindle
Switch the machine off and unplug the power
2000
plug.
1840
Remove the spindle guard (15).
1700
Clean and degrease the tapered shank (18) and
1500
spindle (4).
1300
Now insert the tapered shank (18) into the bush of
the work spindle (4). Important: To avoid injury,
1200
1100
950
Hard metal
Cutting speed
v [m/min]
200 - 150
100 - 70
70 - 50
150 - 110
80 - 55
55 - 35
110 - 75
55 - 35
35 - 25
75 - 50
50 - 30
30 - 20
160 - 80
120 - 60
100 - 80
90 - 60
60 - 40
100 - 70
70 - 50
240 - 190
190 - 140
140 - 80
150 - 100
100 - 60
70 - 45
700 +
600 - 400
500 - 250
400 - 200
300 - 150
200 - 120
150 - 50
450 - 350
350 - 250
400 - 300
30 - 200
Publicité
