Description
Chevalier SMART H818 II – Year 2004
CNC SURFACE GRINDER PC BASED 2-AXIS
SPECIFICATIONS:
Table Size ………………….. 8″ x 18″
Grinding Capacity ……………. 8″ x 18″
Table Workload Capacity
– w/o Magnetic Chuck …………. 385 Lbs.
Table Workload Capacity
– with Magnetic Chuck ………….. 462 Lbs.
Grinding Wheel Size ……… 8″Dia. x 1/2″W x 1-1/4″B
Magnetic Chuck Size ………….. 8″ x 18″
Table Surface to Spindle
Center Distance …………….. 16″
Table Longitudinal Movement
– Manual Traverse ……………. 19.60″
Table Longitudinal Movement
– Servo Drive Traverse ……….. 19.60″
Table Longitudinal Movement Speed
– Infinitely Variable ………… 0.065′ – 82′ FPM
Table Cross Movement
– Rapid Travers Rate …………. 0 – 10 FPM
Table Cross Movement
– Least Increment Input ………. 0.0001″
Table Cross Movement
– Manual Traverse ……………. 8-3/4″
Wheel Head Elevation Movement
– Rapid Traverse Rate ………… 0 – 10 FPM
Wheel Head Elevation Movement
– Lease Increment Input ………. 0.0001″
Positioning Accuracy …………. 0.0001″
Repeatability Accuracy………….0.0001″
Spindle Speed (AC Drive)
-Infinitely Variable to ………. 8,000 RPM
Motor – Spindle ……………… 2 HP
Motor – Logitudinal Hydraulic …. 1 HP
Motor – Crossfeed AC Servo ……. 1.33 HP
Motor – Elevating AC Servo ……. 1.33 HP
Electrics …………………… 220V / 3Ph / 60Hz
Dimensions – Approximate ……… 81″L x 83″W x 83″H
Weight – Approximate …………. 2,665 Lbs.
EQUIPPED WITH:
8″ x 18″ Electro-Magnetic Chuck
Variable Hold Neutrofier Control
Coolant System with Filtration System
3-Face Side Mount Dresser.
Halogen Machine Lamp.
Super-Precision Direct Drive Spindle
Fully Enclosed Factory Enclosure.
Superior Condition & Appearance _ Original Paint
CNC & Conventional Surface Grinder
with Full Factory Enclosure Option
Serial No. S6932001 New – 2004
GENERAL INFORMATION:
The Chevalier SMART H818II –
“Microsoft WinCE Platform, 2-Axis
Conversational CNC. Semi-automatic or manual
operations use hydraulic drive for
longitudinal table movement.
Conversational factory-programmed canned
cycles, simple conversational graphics
with preview function and
surface/plunge/crisscross/profile grinding modes.
Programming, a graphic program
input function avaialable for grinding
and dressing with auto compensation,
It is easy to operate and can combine the
grinding cycle, wheel dressing and auto
compensation without using a CNC program.
The wheel dressing can be executed
during the grinding cycle. It can simulate
the grinding path and dressing cycles by
turning the MPG handwheel.
It can Grind multi-slots with different
pitch and depth.
Conversational and G-code programs can be saved on
a hard drive or floppy disk. It is FANUC CNC Program
compatible and has a patented longitudinal stroke
adjustment from the screen.
• High precision spindle is supported by
four pieces of class 7 (P4) super precision
angular contact ball bearings and directly
coupled with low vibration class V3 spindle
motor, suitable for heavy duty grinding
• Counterweight balance device on spindle
housing to reduce load burden • Headstock
elevation accuracy is adjusted by gibs and
designed with counterweight balance device
to ensure the micro downfeed accuracy
• Base and saddle, specially designed
one-piece T-shaped base casting offers
superior rigidity
* Precision C3 grade ball screws on cross feed
and down feed axes directly mounted via
coupling to the Mitsubishi® AC servo motors
• Hand scraped, Turcite B coated crossfeed
guideways between base and saddle have double
“V” design, provides support for full table
travel and prevents table overhangs
• Hand scraped, Turcite B coated longitudinal
ways between table and saddle are double
“V” design, ideal for delicate side grinding
operations
• Hydraulic creep-feed function. Table longitudinal
movement speed can be adjusted easily by
turning two knobs
• Quick lock/unlock mechanism. Hydraulic cylinder
can be disengaged very quickly for quick fixture
alignment
• Recirculating forced lubrication system
on all guideways
