What process should do for pcd edge grinding?

河南磨澳超硬材料有限公司
H e n a n M o r e S u p e r H a r d P r o d u c t s C o . , L t d .
Office: B-906,Wanda Plaza Office Building,NO. 171 Zhongyuan Rd, Zhongyuan
District,450000,Zhengzhou City, Henan Province 450001,China
Tel/Fax: +86(371)86545906 Mob: +8615093391569 Email:Julia@moresuperhard.com
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What Process Should Do for PCD Edge Grinding?
1. Selection of PCD Tool Grinding Machine
Due to the high hardness and wear resistance of PCD tools, it is difficult for general
machine tools to meet the precision requirements of its edge grinding. According
to the characteristics of PCD tools and the necessary conditions of mechanical
insert grinding, we suggest you use Coborn RG9, EWAG RS15 as well as MT-188
and MT-198 super abrasive tool grinders. These machine tools are the most
advanced super hard tool grinders in the world with the following characteristics:
① High rigidity and good stability
②Grinding spindle can adjust speed；
③Grinding pressure is adjustable and stable, and can swing back and forth, swing
amplitude and frequency are adjustable
④Equipped with high precision optical projector and rotary table, the whole
process of positioning, grinding and measurement can be completed by clamping
at a time
⑤Equipped with digital display device, dimension accuracy is controllable

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2. Selection of Diamond Grinding Wheel
The mechanical cutting edge grinding of PCD tools mainly relies on the
tribochemical reaction and surface fracture of diamond grinding wheel to remove
the excess material. The particle size(grit), concentration and binder(bond) of
diamond grinding wheel have a great influence on the quality and efficiency of PCD
tool cutting edge grinding. Therefore, the correct selection of grinding wheel is
very important. For the grinding wheel produced by MORESUPERHARD, the
diamond grains are strictly screened and arranged in an orderly and uniform
manner. The grinding removal rate per minute is 20 ~ 30 times that of the ordinary
diamond grinding wheel. The experience shows that the grinding wheel with larger
grain size should be selected as far as possible on the premise of satisfying the
processing quality requirements. The recommended diamond grinding granularity
is 22um for rough grinding. Semi-fine grinding grain 15um; Fine grinding particle

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size 9um. The polishing effect of our super fine grinding wheel 4000#-6000# is also
particularly remarkable.
3. Balance of Diamond Grinding Wheel
After selecting the grinding wheel, the grinding wheel shall be balanced. Firstly, the
grinding wheel balancer is placed on the mirror table for calibration. By adjusting
the three balance nuts at the bottom of the balancer, the balance bubble in the
balancer is placed in the center. Then, slide the grinding wheel into the adjusting
rod of the grinding wheel, adjust the three balance screws on the side of the
grinding wheel so that they are evenly distributed (clamping 63 Angle to each other
is about 120), until the balance bubble in the balancing instrument is located in the
center again, and the grinding wheel is balanced.
4. Clamping and adjust the PCD tool between the rotary center and
the optical center

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First, the center of the cross table and the center of the optical projector to coincide
in the middle, through the adjustment of the optical projector set screw, so that the
highest point of the knife point and the outside of the projector in a large arc in
270°, 0°, 90° tangent; Then, according to the drawing requirements, adjust the PCD
tool clamping through a cross table to the reference line of the optical projector,
which is the cutting edge grinding position. In order to ensure the machining
accuracy of PCD tools, all grinding dimensions should be completed in one
clamping. All wear should be removed when grinding PCD tools.
5. Selection of Wheel Swing

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In order to make full use of the grinding ability of the grinding wheel and prevent
the appearance of groove, the swing amplitude of the grinding wheel should be
reasonably selected according to the PCD cutter size.
6. Determine Grinding Speed, Frequency and other parameters
Through a large number of tests, it is determined that the speed of PCD cutter for
cutting edge grinding is 2300 ~ 2800r/min (150mm grinding wheel), and the
grinding wheel is rotating forward. Generally, the higher the cutting frequency is,
the higher the grinding rate is. The cutting frequency of PCD cutter is selected for
60 times/min. Other parameters: water - based coolant concentration 4%, grinding
pressure 2.5Bar(approx. 167N).
7. Cleaning of Diamond Grinding Wheel
After grinding for a period of time, the gap between the grinding grains will be
filled with the grinding chips, resulting in the grinding surface becoming blunt or
even blocked, and the processing efficiency will be reduced (at this time, the
grinding wheel will often squeal during grinding). In order to maintain the cutting
ability of the grinding wheel, it is necessary to clean the cutting surface of the
grinding wheel frequently. The method is to press the silicon carbide (SIC)
grindstone on the grinding surface of the grinding wheel and rotate grinding, or
online cleaning can be selected. My-tech series grinders can realize online cleaning
and dressing functions. Dressing is equipped with ceramic diamond dressing

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wheels produced by MORESUPERHARD, whose efficiency is several times that of
ordinary silicon carbide grinding wheels. In addition, when the grinding wheel is
blocked, we also have customers use ultrasonic cleaning, the effect is also very
good oh, if you have an ultrasonic machine, might have a try.
8. Treatment of PCD tools before and after edge grinding
Before grinding a PCD tool, observe whether there are aluminum scraps on the
front and rear knife surfaces. If there are, wipe them with diamond whetstone. After
grinding, the front end face is ground with diamond grinding paste. After rough
grinding, semi-fine grinding, fine grinding, grinding treatment of PCD tools can
really meet the use requirements.

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9. Detection of PCD Tool
After edge grinding, the PCD cutter's dimension accuracy and edge straightness
can be directly detected on the projector of the machine tool. No obvious defects
such as uneven or zigzag shape are allowed. The flatness of the cutting edge can
also be examined under 100 times microscope.
Moresuperhard Products Co., Ltd has one series of solution on PCD&CBN tools
(such as tool blanks, inserts, milling tools, reamers,and honing tools), from raw PC
D/PCBN blanks, PCD/CBN grinding wheel, PCD/CBN tools grinding machine, laser
cutting machine, polishing and lapping machine & wheels, chamfer machine &wh
eels, and brazing machine include high frequency & the vacuum brazing machine
for PCD/PCBN tools. More details you can visit our website www.pcdgrinding.cn.

What process should do for pcd edge grinding?

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