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CNC Milling Boring Machine, GMC Series Gantry Type

Primary Parts of CNC Milling Boring Machine
1. Crossbeam
Crossbeam cast in resin-sand, steel insert guide ways hardened to HRC 6 0 + / - 2, and ground. It features low coefficient of friction and large bearing capacity, making our CNC milling boring machine suitable for heavy cutting operations.
2. 5-face head
The spindle head integrates vertical and horizontal spindle orientation, and can be indexed in a rotary axis to increments of 5 degrees, and can also allow machining on 5 faces of the work-piece.
3. The beds, columns, crossbeams and rams of our CNC milling boring machine are all cast us ingressions and technology, with well-designed ribbing, producing a machine frame with high rigidity and excellent stability.
4. Horizontal-vertical conversion tool magazine
Automatic tool-changing system saves time with installing and clamping tools, thus improving the overall working efficiency of our CNC boring machine.
5. Bed
Bed section is cast using resin-sand technique, and is very sturdy and rigid in its construction. The bed can fully support the weight of the gantry to keep the milling boring machine perform stably.

Bottom

6. Worktable
The X-axis double guideway is a type of western-made heavy-duty linear guideways which provide low friction, quick response, little vibration at high speed, and no shudder at low speed.

CNC Functions of Milling Boring Machine
Minimum pulse resolution on linear axes is 0.001 mm.
Compensation functions include reverse clearance compensation, compensation for over-quadrant error, tool-length and tool-radius compensation, and optional thermal compensation.
Feed functions include feed override adjustment, feed rate per minute, feed rate per revolution, and limit for programmable acceleration.
Spindle functions include spindle speed, spindle override adjustment, spindle orientation, and spindle speed limit.
Interpolation Types
Positioning, accurate stop, 3-coord in ATE linear interpolation, arc interpolation of any two coordinates, helical interpolation, feed pause, and thread cutting.
Edit Functions
Program segment index
Program number index
Background editing
Teach-in programming
Program protection
Safety Protective Function
Program testing, limiting of programmable machining area, software limitation monitor, hardware limitation monitor, E-stop, static monitor, speed monitor, position monitor, contour monitor.
CNC Programming
Fixed cycles of milling, drilling, and boring
Metric/inch programming
Absolute/incremental programming
Macro programming
Plane section
Workpiece coordinates
Operation Methods
Automatic, single-unit DNC, MDI, teach-in, incremental, dry run, single block
Display Contents
Current position, real cutting speed, program, operation error, alarm information, self-diagnosis functions
Data Transfer
Data I/O via USB interface
Data I/O via RS232C serial interface

Main Technical Specifications of Gantry Type CNC Milling Boring Machine

Item			Units	GMC1530r1	GMC1530r2	GMC2040r2
Worktable	Worktable size		mm	1500×3000	1500×3000	2000×4000
	Width of gantry		mm	2100	2100	2600
	Max. load capacity		kg	10000	10000	20000
	T-slot		mm×n	28×7	28×7	28×11
Machining range	Worktable travel (X-axis)		mm	3600	3600	4200
	Saddle travel (Y-axis)		mm	2700	2700	3200
	Spindle box travel (Z-axis)		mm	800	1000(1250 Optional)	1000(1250 Optional)
	C-axis			5°×72	5°×72	5°×72
	Distance from spindle nose to table surface	Max.	mm	1000	1200	1200
	Distance from spindle nose to table surface	Min.	mm	200	200	200
Spindle	Spindle taper (7:24)			ISO50	ISO50	ISO50
	Spindle speed range r/min		r/min	10-3000	10-2000	10-2000
	Spindle torque		N.m	1321/1821	1359/1873	1359/1873
	Spindle motor power		kW	37/51	37/51	37/51
	Square ram section size		mm	350×350	420×470	420×470
Feed	Cutting feed speed range		mm/min	1-5000	1-5000	1-5000
	Rapid travel	X-axis	m/min	13	13	13
		Y-axis	m/min	13	13	13
		Z-axis	m/min	10	10	10
Tool magazine	Capacity Pcs			40, 60	40, 60	40, 60
	Tool selection method			Optional	Optional	Optional
	Max. tool diameter	Full	mm	φ125	φ125	φ125
	Max. tool diameter	Adjacent socket empty	mm	φ250	φ250	φ250
	Max. tool length		mm	400	400	400
	Max. tool weight		kg	20	20	20
	Tool changing time		s	5.5	5.5	5.5
Positioning accuracy	GB/T19362.1-2003 Executing national standard	X-axis	mm	0.03 (0.023 with sealed encoder)	0.03 (0.023 with sealed encoder)	0.032 (0.025 with sealed encoder)
		Y-axis	mm	0.03 (0.023 with sealed encoder)	0.03 (0.023 with sealed encoder)	0.032 (0.025 with sealed encoder)
		Z-axis	mm	0.025	0.025 (0.02 with sealed encoder)	0.025 (0.02 with sealed encoder)
Repeatability	GB/T19362.1-2003 Executing national standard	X-axis	mm	0.02 (0.016 with sealed encoder)	0.02 (0.016 with sealed encoder)	0.022 (0.016 with sealed encoder)
		Y-axis	mm	0.02 (0.016 with sealed encoder)	0.02 (0.016 with sealed encoder)	0.022 (0.016 with sealed encoder)
		Z-axis	mm	0.01	0.01 (0.008 with sealed encoder)	0.01 (0.008 with sealed encoder)
Electrical total capacity KVA				110	110	110
CNC system				Siemens 840D	Siemens 840D	Siemens 840D

CNC Milling Boring Machine, GMC Series Gantry Type

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