Single-point diamond dressers
|
How to determine
the carat size?
The carat is
the mass unit, which determines the size of the diamond.
1 carat
= 2 dgr. The carat size of the diamond to be used for dressing grinding
stones is determined by the sum of the «guide numbers»
corresponding to each specification of the grinding stone. These
values guarantee an excellent performance. |
|
|
|
|
|
|
|
|
|
specifications of the
to be dressed grinding stone |
guide
numbers |
Ø stone mm
|
width mm |
grits |
hardness |
binder |
abrasive |
100 |
10 |
240 up to 600
|
D - E |
Vitrified (v)
|
AL. Ox.* |
1 |
150 |
20 |
150 up to 220
|
- |
Resinoid |
|
2 |
200 |
40 |
80 up to 120 |
F - G |
|
|
3 |
300 |
75 |
- |
H à K |
|
|
4 |
400 |
100 |
54 up to 60 |
L - M |
|
|
5 |
500 |
125 |
30 up to 46 |
- |
|
Sic.* |
6 |
600 |
150 |
- |
N - O |
|
|
7 |
700 |
175 |
24 |
P - Q |
|
|
8 |
800 |
- |
|
- |
|
|
10 |
900 |
200 |
|
R - S - T |
|
|
12 |
* Aluminium oxide = A - WABL
- WA - RU - KR - SA Silicon carbide = C - CV
Example: for
a grinding stone of Ø 300 x width 40 mm - WA 46 - K5 - V
specifications |
Ø 300 mm |
|
width 40 mm |
|
grit 46 |
|
hardness K |
|
vitrified binder |
|
abrasive
Al. Ox. |
TOTAL |
guide numbers |
4 |
+ |
3 |
+ |
6 |
+ |
4 |
+ |
1 |
+ |
1 |
19 |
The diamond will be chosen
following the total of the guide numbers : 21 = 1 carat.
total of the
guide numbers |
9 |
15 |
18 |
21 |
27 |
33 |
36 |
39 |
42 |
45 |
48 |
51 |
diamond size |
0.25 |
0.50 |
0.75 |
1 |
1.50 |
2 |
2.50 |
3 |
3.50 |
4 |
4.50 |
5 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
carat size |
holder |
ORDER No |
0,25 |
Ø 12 x 100
|
P 05/010
|
0,50 |
Ø 12 x 100
|
P 05/022
|
0,75 |
Ø 12 x 100
|
P 05/034
|
1,00 |
Ø 12 x 100
|
P 05/046
|
1,50 |
Ø 12 x 100
|
P 05/058
|
2,00 |
Ø 12 x 100 |
P 05/070
|
0,75 |
cone morse 1 |
P 05/094
|
1,00 |
cone morse 1 |
P 05/106
|
1,50 |
cone morse 1 |
P 05/118
|
|
|
The cylindrical holder is always
Ø 12 x 100
mm, to enable the user to machine it down to all inferior dimension.
|
|
Why and how
to diamond a grinding stone?
The dressing
operation «opens» the stone by eliminating the used
grits and by removing the incrusted metallic particles.
It also
enables to give the desired profile and maintain the concentricity
of the stone. A double angle of inclination will be given to the
dresser, which will be fixed as close as possible to the stone.
The dressing operation of the
stone is carried out as follows:
* abundant watering is required
* at normal running speed of the stone
* by successive passes of no more
than 0,025 mm.
*
The translation motion must be uniform, smooth and always in the
same direction across the side to be dressed. A fast translation
motion will increase the cutting capacity of the stone.
* the translation speed of the
diamond will influence the state of surface of the workpiece.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|