Details:
Single point "brutted diamond" dressers are made with
selected "Congo Rounds" mounted in a matrix. A Single
cutting edge is presented to the grinding wheel.
Diamonds for single point dressers are selected in accordance
with quality and size. The question of using a superior, average
or commercial quality, depends on the grinding finish require,
and the machines and working parameters.
We offer three grades namely A, B & C for all the diamond
size, i.e. from 0.15 to 5.00 carat size.
Guideline for single -point diamond dressers :
Considerable care should be taken in mounting the diamond dresser
in position. Diamonds are sensitive to shock and impact.
The dresser must be clamped rigidly in place to avoid vibration
once dressing begins.
An ample supply of coolant should be directed contact at the
diamond point before dressing begins, as the sudden application
of coolant to the diamond once it has heated up can cause it
to shatter.
The diamond holder should not be set directly on the centre
of the grinding wheel, but at an angle of 5° -15° to
the direction of rotation of the wheel so that it appears to
be "trailling".
At normal wheel peripheral speeds dressing rates of approximately
20-25 m/sec can be achieved.
The maximum depth of cut achieved per dressing pass is 0.03
mm or on fine grit wheels, approximately 0.005-0.01 mm.
The cross feed rate is dependent upon grit size and can have
a marked influence on the quality of the finish imparted to
the grinding wheel surface. The lower the feed rate, the finer
the surface finish. We would recommend the following feed rates
per revolution of the grinding wheel.
|
Grinding
wheel grit size
|
Feed
rate in mm / rew
|
|
30 -
46
|
0.60
- 0.30
|
|
50 -
120
|
0.30
- 0.10
|
|
180 -
320
|
0.10
- 0.02
|
|
