CG650 CG700 Crankshaft Grinding machine
 |
SPECIFICATIONS
| SPECIFICHE TECNICE | CG650 | CG650CNC | SPECIFICATION |
| CAPACITA' DI LAVORO | WORKING CAPACITY | ||
| Altezza punte sulla tavola | 650 mm | 650 mm | Height of centres on table |
| Distanza massima tra i centri | 6400 mm | 6400 mm | Max distance between centers |
| Distanza massima tra i mandrini | 6340 mm | 6340 mm | Max. distance between self-centring chucks |
| Diametro max ammesso sulla tavola | 1300 mm | 1300 mm | Swing over table |
| Massima eccentricità delle teste (corsa del pistone/2) | 350 mm | 350 mm | Max head offset (stroke/2) |
| Massimo diametro ammesso sulla lunetta standard | 350 mm | 350 mm | Max diameter admitted on std steady rests |
| Massimo diametro rettif. con mola nuova | 480 mm | 480 mm | Max workpiece diameter-new wheel |
| Peso massimo ammesso sulle punte | - | - | Max weight admitted between centers |
| Peso massimo ammesso sulle lunette | 7500 kg | 7500 kg | Max weight admitted with steady rests |
| SPECIFICHE MACCHINA | MACHINE SPECIFICATIONS | ||
| ASSE Z (tavola o teste) | ASSE Z | ||
| Max velicità spostamento tavola | 0-5000 mm/min | 0-5000 mm/min | Max table speed |
| Risoluzione (dipende dalla precisione dell'encoder lineare) | - | 0,003 mm | Resolution (depends from linear encoder precision) |
| Potenza motore movimento tavola | 3 KW | 3 KW | Table motor power |
| Sistema di rilevamento quote | - | Encoder lineare | Position measurement system |
| ASSE X (testa porta mola) | ASSE X | ||
| Velocità massima | 5000 mm/min | 0-5000 mm/min | Max speed |
| Corsa rapida della mola | - | - | Fast grindhead feed |
| Corsa micrometrica | - | - | Micrometric grindhead feed |
| Corsa massima | 840 mm | 840 mm | Max stroke |
| Vite aricircolo di sfere (diametro per passo) | 10 x 80 mm | 10 x 80 mm | Ball screw (pitch x diameter) |
| Sistema di rilevamento quote | - | Encoder lineare | Position measurement system |
| Potenza motore centralina oleodinamica | 2,2 KW | 2,2 KW | Hyraulic unit motor power |
| Potenza motore controllo assi | - | 2 KW | Axis control motor power |
| UNITA' PORTA MOLA | WHEEL UNIT | ||
| Diametro della mola | 1300 mm | 1300 mm | Diameter of grinding wheel |
| Spessore massimo della mola | 160 mm | 160 mm | Max grinding wheel thickness |
| Spessore normale della mola | 60 mm | 60 mm | Standard grinding wheel thickness |
| Spessore minimo della mola | 25 mm | 25 mm | Min grinding wheel thickness |
| Velocità periferica della mola | 33 m/s | 33 m/s | Grinding wheel peripheral speed |
| Potenza motore rotazione mola | 35 KW | 35 KW | Wheel rotation motor power |
| TESTA PORTA PEZZO | WORKHEAD | ||
| Variazione di giri | 0-60 RPM | 0-60 RPM | Stepless rotation speed |
| Diametro dei mandrini | 450 mm | 450 mm | Diameter of chucks |
| Potenza motori posizionamento teste porta pezzo | 0,55+0,55 KW | 0,55+0,55 KW | Motor power for heads positioning |
| Potenza motore rotazione testa | 5,5 KW + 5,5 KW | 5,5 KW + 5,5 KW | Headstock rotation motor power |
| UNITA' DI LUBRIFICAZIONE | LUBRIFICATION UNIT | ||
| Pressione di esercizio | 4 bar | 4 bar | Operating pressure |
| Capacità del serbatoio | 800 l | 800 l | Tank capacity |
| Potenza motore pompa | 0,37 KW | 0,37 KW | Pump motor power |
| GRUPPO IDROSTATICO | HYDROSTATIC UNIT | ||
| Pressione di esercizio | - | - | Pressure |
| Capacità del serbatoio | - | - | Tank dimension |
| Motore | - | - | Motor |
FEATURES
MACHINE BASE
-It is made of high resistance monolithic cast iron, thermically stabilized.
-It has one flat and one "V" guide.
- Both guides are grinded and wide for the table movement.
TABLE
-Strong structure, thermically stabilized, with scraped surface in order to secure the highest precision of linearity and flatness in the different positions of theworkheads.
-The guideways are covered with special anti-friction plastic material in order to:
reduce the disengaging friction
reduce the coefficient of general friction
reduce the rubbing wear
-Table movement with synchronous servomotor and rack without clearance.
-Table positioning with linear encoders.
WHEELHEAD UNIT
- It moves on wide prismatic guideways
-The grinding wheel spindle rotates by means of a high precision bearings
- The transmission of the motion to the spindle takes places by Poli V belt
-The grinding wheel diameter is 1300 mm and the width can reach n from 40 mm to 100 mm
- The peripheral rotation speed of the grinding wheel is constant 33m/sec.
-The motor power is of 35KW and the machine can be equipped with a self-balancing system of the grinding wheel
WORKHEADS (HEADSTOCK AND TAILSTOCK)
-Workheads are made of high resistance cast iron
-The workheads-spindle is mounted on two triads of bearings of very high precision.
-The bearings are pretensioned in order to obtain the highest rigidity also in presence of high load.
-The heads can move on the table, they are supported by a pneumatic system (air cushion) for obtaining movement sensitivity and for avoiding table-rubbing wear.
-For crankshaft-balancing, the workheads are provided with slide with proportionate counter- weights.
-Both workheads are supplied with motors with electronic synchronisation.
SETTING-UP AND CLAMPING SYSTEM
The centring of the crankshaft is obtained by means of a special support equipped with three movements that allow solving precisely and easily any problem regarding the work-piece centring:
Opened traditional or CNC controlled steady rest support the crankshaft on the main journals during rod journals grinding
3 or 4 jaws indipendent chuck for crankshaft centering and clamping
Special pot chucks for clamping specific pieces
Special rotationg steady rests support the crankshaft on the main journals during rod journals grinding
One offset movement on guides
Zero setting and angular position is assured by pneumatically controlled locking pins.
DRIVES AND CONTROL OF AXIAL POSITIONING
The X and Z axis can be moved either by CNC or manual mode.
 CG TABLE | [CG TABLE] | 154 Kb | 19/04/10 14:38 |
| CRANKSHAFT GRINDING MACHINES | [CRANKSHAFT GRINDING MACHINES] | 6587 Kb | 28/07/10 18:24 |
| MARINE | [Marine applications] | 1022 Kb | 20/04/10 10:00 |
