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重型龙门镗铣床GMB series

GMB series machine tool consists of moving table and beam and fixed column. Main structural parts are made of high strength cast iron and phenolic sand molding with the good shock absorption and thermal stability. The structure of the whole machine is characterized by the high rigidity and high reliability. It is suitable for the processing of heavy and extra-heavy basic parts in the industries of metallurgy, railway, heavy machine, shipbuilding, electricity generation, automobile, aviation, printing and mold, especially the CNC processing of all kinds of plane, curved surface, space curved surface and hole with large weight and long height. It is widely applied in the rough and fine processing of complicated parts of plate, box and chassis.
The machine tool can finish 4-axis linkage curved surface processing and rigid tapping. The addition of accessory milling head can meet the demand of five-face processing. It can add the accessory milling head according to customers' demand of processing and realize the five-face processing by one time of clamping accordingly. The spindle of boring and milling head is driven by AC spindle servo motor. The output terminal of spindle servo motor is directly connected to the automatic gear box with the top and lower gear. The exterior coder can realize the fixed-direction and rigid tapping of spindle.

    W-axis is equipped with the reduction box and motor with the internal contracting brake to guarantee the stability of beam during the processing.

    The hydraulic system controls the clamping and releasing of spindle, the grabbing of accessory head, hydraulic balance of Z-axis and clamping and releasing of guide. The hydraulic system possesses the functions of two-stage filtration and low oil alarming.

    The static pressure tank is controlled by the constant temperature. Apply the centralized lubrication for the timed and measured lubrication of each axis.

    The ram is equipped with the equalizer to reduce the loading of Z-axis screw and prolong its service life.

    It adopts the constant temperature oil cooler to control the temperature rise of spindle and reduction box.

    Optional Whole-wrapped Square Ram.

    Standard Option of Rectangle Guide Square Ram.

    X-axis rack-and-gear transmission is equipped with the double gear mechanical backlash-eliminating reduction box.
    It can adopt double gear-rack electric control for the backlash elimination optionally.

    Four axes can all adopt the precision grating scale to realize the fully-enclosed position feedback and guarantee the precision of location and repeated location, where two sets of grating scales on W-axis can ensure the synchronous movement of the beam.

    Hydraulic Lock Mechanism of Beam and Vertical Ram Guide.

    The fixed displacement multi-stage pump provides the hydraulic oil with the constant flow for the constant flow static-pressure guide.

    It can be equipped with the boring and milling spindle with the large torque output.

    The beam adopts the composite structure of rectangle up-and-down stage solid guide and rolling guide to neutralize the disturbing moment caused by the offset of center of gravity of spindle box's boring and milling head and traverse slide. Y-axis traverse slide, transverse guide and slide wedge all adopt the filming treatment to enhance the precision and service life.

重型龙门镗铣床GMB series
YHMC-G21MB
YHMC-G25MB
YHMC-G30MB
YHMC-G40MB
Technical Specifications
Table
Width
mm
Length
mm
MaxLoading
t/m2
Travel
X-axis Travel
mm
Y-axis Travel
mm
Z-axis Travel
mm
W-axis Travel
mm
Max Width of Passing Work-piece
mm
Spindle
Distance from Spindle End to TableSur face
Spindle Specification
Spindle Transmission
Spindle Output Power
Kw
Spindle Torque
Nm
Spindle Speed
rpm
Feeding Speed
Rapid SpeedX/Y/Z
mm/min
Rapid Traverse SpeedX/Y/Z
m/min
Rapid Traverse SpeedW
m/min
Feeding Speed W-axis
m/min
Precision
Precision Standard
Others
Vertical Ram Section
mm
CNC System
YHMC-G21MB
1600
6000-10000
8
Table length+500
2800
1000/1250/1500
2400-4000
2100
Customizable
BT50/BT60
Two-speed gearbox
28/38;41/56;55/78;60/84;71/114;100/140
1470-11320
10-1500/10-3000
5-8000
10
2
2
VDI/DGQ3441
500×500/600×600
SIEMENS840Dsl/Optional
YHMC-G25MB
2000
6000-10000
9
Table length+500
3200
1000/1250/1500
2400-4000
2500
Customizable
BT50/BT60
Two-speed gearbox
28/38;41/56;55/78;60/84;71/114;100/140
1470-11320
10-1500/10-3000
5-8000
10
2
2
VDI/DGQ3441
500×500/600×600
SIEMENS840Dsl/Optional
YHMC-G30MB
2500
6000-10000
10
Table length+500
3700
1000/1250/1500
2400-4000
3000
Customizable
BT50/BT60
Two-speed gearbox
28/38;41/56;55/78;60/84;71/114;100/140
1470-11320
10-1500/10-3000
5-8000
10
2
2
VDI/DGQ3441
500×500/600×600
SIEMENS840Dsl/Optional
YHMC-G40MB
3000
6000-10000
10
Table length+500
4700
1000/1250/1500
2400-4000
4000
Customizable
BT50/BT60
Two-speed gearbox
28/38;41/56;55/78;60/84;71/114;100/140
1470-11320
10-1500/10-3000
5-8000
10
2
2
VDI/DGQ3441
500×500/600×600
SIEMENS840Dsl/Optional
重型龙门镗铣床GMB series
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