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重型龙门镗铣床GMA series

GMA series machine tool consists of fixed table, moving gantry frame and beam. 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 and automobile, especially the CNC processing of all kinds of plane, curved surface, space curved surface and hole with large weight and long length. 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 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 can be equipped with the boring and milling spindle with the large torque output.

    Optional Whole-wrapped Square Ram.

    Standard Option of Rectangle Guide Square Ram.

    Double Motor Backlash Elimination
    Control the clamping status between the driving spindle and driven spindle by the numerical control system to guarantee the optimal torque coupling and automatically eliminate the backlash for X-axis' left-to-right movement.

    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.

    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.

    X-axis adopts the constant flow static-pressure guide with the high bearing capacity, strong abilities of shock proof and shock absorption, good precision stability and long service life.

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

    Hydraulic Lock Mechanism of Beam and Vertical Ram Guide.

    The fixed displacement multi-stage pump with the open-type constant flow static-pressure guide can provide the hydraulic oil with the constant flow.

重型龙门镗铣床GMA series
YHMC-G40MA
YHMC-G45MA
YHMC-G50MA
YHMC-G55MA
YHMC-G60MA
YHMC-G65MA
Technical Specifications
Table
Width
mm
Length
mm
Max Loading
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 Table Surface
Spindle Specification
Spindle Transmission
Spindle Output Power
Kw
Spindle Torque
Nm
Spindle Speed
rpm
Feeding Speed
Rapid Speed X/Y/Z
mm/min
Rapid Traverse Speed X/Y/Z
m/min
Rapid Traverse Speed W
m/min
Feeding Speed W-axis
m/min
Precision
Precision Standard
Others
Vertical Ram Section
mm
CNC System
YHMC-G40MA
3000
8000-50000
20
8500-50500
4500
1250/1500
2400-4000
4000
Customizable
BT50/BT60
Two-speed gearbox
28/38
1470-11320
10-1500/10-3000
5-8000
10
2
2
VDI/DGQ3441
500×500/600×600
SIEMENS840Dsl/Optional
YHMC-G45MA
3500
8000-50000
20
8500-50500
5000
1250/1500
2400-4000
4500
Customizable
BT50/BT60
Two-speed gearbox
28/38
1470-11320
10-1500/10-3000
5-8000
10
2
2
VDI/DGQ3441
500×500/600×600
SIEMENS840Dsl/Optional
YHMC-G50MA
4000
8000-50000
20
8500-50500
5500
1250/1500
2400-4000
5000
Customizable
BT50/BT60
Two-speed gearbox
55/78
1470-11320
10-1500/10-3000
5-8000
10
2
2
VDI/DGQ3441
500×500/600×600
SIEMENS840Dsl/Optional
YHMC-G55MA
4500
8000-50000
20
8500-50500
6000
1250/1500
2400-4000
5500
Customizable
BT50/BT60
Two-speed gearbox
60/84
1470-11320
10-1500/10-3000
5-8000
10
2
2
VDI/DGQ3441
500×500/600×600
SIEMENS840Dsl/Optional
YHMC-G60MA
5000
8000-50000
20
8500-50500
6500
1250/1500
2400-4000
6000
Customizable
BT50/BT60
Two-speed gearbox
71/114
1470-11320
10-1500/10-3000
5-8000
10
2
2
VDI/DGQ3441
500×500/600×600
SIEMENS840Dsl/Optional
YHMC-G65MA
5500
8000-50000
20
8500-50500
7000
1250/1500
2400-4000
6500
Customizable
BT50/BT60
Two-speed gearbox
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GMA series
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