Bt-150DS is a six axis CNC tool grinder, which is composed of six
axes: grinding wheel swing axis (x axis), workpiece feed axis (Y axis), grinding wheel
vertical motion axis (Z axis), workpiece horizontal rotation axis (c axis), tool indexing
axis (a axis) and grinding wheel inclination angle (b axis). The machine tool is suitable for
the production and grinding of medium and large quantities of carbide insert, PCD
insert, CBN insert and
rotary carbide tools. As long as the alignment is completed and the
switch is pressed, the system will automatically complete the grinding under the action of
the gravity of the heavy hammer, realizing the ideal state of "constant pressure
grinding and flexible feeding". Due to the high hardness of diamond material (PCD) and
the rapid wear of grinding wheel, the system can automatically detect and compensate
this wear, and can
maintain the dimensional accuracy of grinding for a long time.
Mechanical structure of machine tool: the machine tool bed (base)
adopts an
integral casting weighing up to 1.5 tons, which can meet the
grinding requirements of anysuperhard material. The machine tool is equipped with a grinding
fluid protective cover to
ensure that the grinding fluid will not splash everywhere. The
optical lens barrel and CCD
camera are equipped with protective covers to ensure that the lens
does not enter water
during operation and that its optical adjustment is not
inadvertently changed. Lighting
lamps are installed inside the machine tool.
1.
Machine tool motorized spindle: the grinding head adopts
high-precision
frequency conversion speed regulation motorized spindle, power: 5 O
kW, the maximum
speed can reach 8000 rpm. It is cooled by circulating water. The
rotation accuracy of
grinding head spindle: end jump 0.002 mm and diameter jump 0.003
mm.
Machine tool guide rail: high precision needle roller guide rail is
adopted, which
significantly improves the rigidity, accuracy and durability of the
machine tool
Servo mechanism: the control servo structure is adopted. Three
linear feed axes
(x-axis, Y-axis and Z-axis) and three rotating axes (c-axis, b-axis
and a-axis) are
controlled by servo motor, and four axis linkage can be done under
the drive of application
program. The grinding efficiency is improved and the grinding
quality of the cutting edge is
improved.
Grinding head reciprocating swing mechanism: the grinding head
swings under
the drive of servo motor. The swing frequency is 0-60 times / min,
and the swing amplitude
is freely adjusted between 0 and 120mm, so as to make the grinding
wheel consume
evenly and sharpen in time, so as to ensure the grinding accuracy
and roughness. The
mechanical swing, swing amplitude, swing frequency and swing
position controlled by NC
program can be set in the program.
Angle encoder: after detecting the tool, it can accurately restore
the grinding
position of the tool and avoid the disadvantage that the tool is
not reset after multiple
grinding. The angle resolution of the digital encoder is up to 1 '.
Lubrication system: the lubrication system adopts intermittent
automatic
lubrication system. The user can set the refueling time and
refueling time interval to
ensure the service life of the screw rod.
2, Technological breakthrough1.
Grinding application software: the grinding software independently
developed by
our company can set grinding parameters such as tool angle, arc
size and feed speed.
After aligning the tool center, the machine tool can automatically
grind high-precision tools
by setting basic parameters through grinding software. All
parameters of the machine tool
are managed by the database system, which is called by the
processing program name to
facilitate the storage and search of the program. The software can
display the tool image
and the coordinates of the NC axis, and can generate a calibration
line to display the
center position of the rotation axis. At the same time, the
software is responsible for the
communication between the interface and the NC system. It can
synthesize the grinding
wheel parameters, tool parameters and processing parameters (such
as feed rate, feed
speed and residence time) of the software interface to generate the
NC code (G code)
and transmit it to the NC system to make the machine tool
automatically complete the
grinding. The software has four cycles for any combination: 1)
middle edge grinding, 2)
right edge grinding, 3) left edge grinding and 4) arc grinding. It
can meet all the
requirements of customers and minimize the time of grinding air.
Automatic dressing of grinding wheel: the automatic dressing device
of grinding
wheel is installed on the working feed shaft (Y-axis), which can
automatically trim and
clean the diamond grinding wheel driven by the servo motor.
On line measuring device: the contact measuring device is installed
on the
pneumatic folding support to avoid interference with the working
grinding wheel. When
measurement is needed, the tool after grinding is measured under
the drive of the NC
program. The difference between the actual measured value and the
set value is the wear
amount of the grinding wheel, which can be automatically
compensated into the thickness
