High-Speed Vh-20 Milling Machine

Product Description

MINGJU CNC Milling Machine Machining Center VH-20
Technical specification

Item	Specification	Unit	VH-20
Travel	X/Y/Z Axis	mm	760/460/450
	Distance from Spindle Front to Table	mm	150-600
	Guide Type	/	Three-axis Roller Linear Guide
Table	Worktable Size L*W	mm	1000*460
	Max. Worktable Load	kg	1000
	T-Slot (number of slots x size x distance)	mm	3-18-150
Spindle	Spindle taper holes and specifications	Type	HSKA63/BBT40/BBT50
	Spindle Speed	rpm	15k/12k/8k
	Spindle Motor	kw	11-15/15-18.5
	Spindle Drive Type	/	Direct Drive/Electric Spindle
Feed	X/Y/Z Axis Rapid Feed	m/min	48/48/30
	Cutting Feed Speed	mm/min	1-10000
Tool Change Device	Tool Magazine Form	/	Arm-type tool magazine
	Tool Holder Specification	type	HSKA63/BBT-40/BBT-50
	Tool Capacity	tools	24-32
	Max Tool Diameter (adjacent tools)	mm	Φ80/Φ80/Φ105
	Max Tool Diameter (no adjacent tools)	mm	Φ150/Φ150/Φ200
	Maximum Tool Length	mm	300/300/350
	Maximum Tool Weight	kg	8/8/15
	Tool Change Time	sec	3.5/3.5/7
Accuracy	Positioning Accuracy (Closed-Loop)	mm	±0.005/±0.003
	Repeat Accuracy (Closed-Loop)	mm	±0.003/±0.002
Power Requirements	Power Requirement	kVA	25
	Air Pressure Requirement	kg/cm²	6~8
Machine Dimensions	Length/Width/Height (Including Water Tank)	mm	2520*2550*2900
	Weight (Including Water Tank)	ton	8

Product Description
High Rigid Structure, Eccellent Manufacturing
Mingju VH series adopt T-shaped structure bed, full support for X-axis table, transverse movement along the bed, Y-axis is bullhead type supporting back and forth movement, with perfect support and structural rigidity. The foundation parts are all made of high-quality grey cast iron with resin sand casting process, and the reasonable arrangement of the fascia plate is carried out according to the kinetic analysis, which ensures that it has a good resistance to twisting and bending ability. The three linear co-ordinates adopt imported heavy-duty linear roller guide sub, with large load capacity and strong anti-twisting ability. The ball screw adopts pre-drawn high-precision screw with fixed support at both ends of the screw. The center bearing of the rotary table adopts precision grade rolling bearings and is strictly preloaded to increase the rigidity of the feeding system.

High Precision
The high rigidity of the machine's basic parts provides a guarantee for the machine's good precision stability. At the same time, the machine has three linear coordinates and two rotary coordinates - (optional imported high-precision optical scale), so that the positioning and repeat positioning accuracy of the machine can be further improved; Cooling nozzles at the front of the spindle and the high-pressure spray nozzle at the top of the fully enclosed shroud provide all-around coolant for the machined the processed workpiece, preventing thermal deformation and ensuring high accuracy. High Torque, Heavy Cutting Spindle Structure
The spindle box adopts high rigidity square ram structure, high-speed direct junction spindle assembly, spindle transmission force constant power range, spindle optional maximum power of 22KW, can be matched with secondary gear transmission output torque up to 1500NM. The spindle and spindle box are controlled by oil cooler with thermostatic cycle, which ensures stable working precision. VH20 can optionally choose high-speed spindle or high rigidity BBT50 spindle, while VH22, VH25 standard equipped with φ190mm high rigidity BT50 spindle. Fast and Reliable Automatic Tool Change (ATC)
Adopting ATC disc type tool changer mechanism, smooth tool change, high gripping force The tool magazine can hold 24-32 tools. The tool magazine is mounted by shoulder type, one-piece casting, good rigidity and strong stability.

Easy to Clean, Easy to Remove Chips, Easy to Maintain
The working area of the machine is centralized, with integral protection and concise structure. The water flushing chip removal on both sides of the working table or optional two automatic spiral chip removers can completely enable automatic chip removal. The inner side adopts stainless steel side plate, which is not easy to hang chips.

Process & Application
VH Series is suitable for the manufacturing small and medium batches of box-type parts, specifically stainless steel, steel parts, castings, alloys and other materials. With superior performance, all five faces of workpiece can automatically complete a number of side milling, boring, reaming and tapping and other processes within one clamp, which can save a lot of process equipment, and improve production efficiency. On the basis of the standard machine, 4th axis and 5th axis can be added on top with fixture to achieve multi-face manufacturing capability.
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