VK718 Large CNC Milling Machine-Global supplier

VK718 Large CNC Milling Machine Details

1. Main transmission system

The main transmission system is driven by an 11kW AC motor through an elastic coupling to drive the main transmission box. There are three sets of sliding gears inside the main transmission box, and the hydraulic pre selected transmission mechanism drives each sliding gear to form 18 different speeds, which are then transmitted to the spindle on the milling head. There is an electromagnetic brake inside the main transmission box, and the spindle brakes quickly and smoothly.

2. Adopting side mounted electrical cabinets and hanging control stations, integrating mechanical and electrical components, and being shipped as a whole, it is easy to install, centrally operated, and capable of operating from multiple positions.

3. The vertical spindle on the milling head has an ISO No.50 taper hole that meets international standards and can be installed with standard milling cutters or milling heads. The axial position of the spindle can be adjusted, and it extends axially together with the sleeve. The spindle can also be adjusted to a tilted position along with the milling head body within a range of 45 degrees on both sides.

4. The feed system's X, Y, and Z coordinates are all driven by AC servo motors. The motor drives the ball screw through a synchronous toothed belt, causing the components to move along the guide rail. The servo motor and its corresponding speed control unit, as well as the pulse encoder used for position detection, are all controlled by the numerical control system; To complete various feed motions. Synchronous toothed belts can be tensioned to reduce transmission clearance and noise. The vertical motor is equipped with a brake. When the power is cut off, the vertical brake is tightened to prevent the lifting platform from sliding down due to its own weight.

5. The milling machine handle adopts the standard XT50 form, which can be used interchangeably with the universal milling machine handle produced by our company. Save on the cost of purchasing knife handles.

6. The semi-automatic tool loading and unloading mechanism is installed above the milling head, and is controlled by two buttons for tool loading and unloading, which is convenient and safe. Even if the spindle extends outward, it will not affect tool loading and unloading.

7. Lubrication system

The automatic lubrication station is equipped with a progressive oil separator to automatically lubricate the machine tool guide rail pair, ball screw pair, and gear pair at regular intervals. The amount of oil added each time and the time interval between two times are adjustable, striving to ensure a reasonable amount of oil at each lubrication point.

VK718 Large CNC Milling Machine Parameters

project	VK718 CNC milling machine
system	Guangshu GSK990M system
casting	High quality resin sand casting
Spindle unit	BT50
lead screw	Hanjiang/South Craft 4012
Knife cylinder	Taiwan Airtac
lock nut	Taiwan Yingxi
headstock	gear transmission
electrical components	Schneider
protection	Half protection

1. Technical specifications

trip
X-axis	1500mm
Y-axis	850mm
Z-axis	500mm
Spindle end face to worktable	120-620mm
Feed rate
Fast X-axis movement	10m/min
Fast Y-axis movement	10m/min
Z-axis rapid movement	8m/min
Cutting feed	1-4000mm/min
定位精度	±0.02
Repetitive positioning accuracy	±0.01
workbench
workbench area	600×1800mm
Maximum load capacity	800Kg
T-slot	5-18mm
spindle
speed	1800rpm
spindle taper hole	7:24 BT50
spindle bearing	NSK
Main motor power	11KW
weight	5500Kg

VK718大型数控铣床配置

1. CNC control system (standard configuration)

The system has complete and reliable interlocking, safety protection, and fault diagnosis alarm functions, equipped with RS232 standard communication interface, which can be programmed and stored with a computer, and can achieve DNC processing.

Numerical Control System GSK990M

Spindle motor power 11Kw

X/Y/Z axis servo motor torque 15/15/23N · m

2. Power supply device

Power supply form: three-phase AC 380V ± 10% 50Hz ± 10%

Electricity capacity 15KVA

3. Cooling system

Water tank capacity 130L

Cooling pump power 125W

Cooling pump flow rate 12 L/min

4. Machine tool dimensions and weight

Machine tool dimensions (length x width x height) 2900 x 2550 x 2600mm

Machine weight 5500Kg

5、 Product manufacturing, installation and acceptance standards

Precision Testing Report for CNC Milling Machine

dial indicator

定位精度

dial indicator

Repetitive positioning accuracy

dial indicator

定位精度

dial indicator

Repetitive positioning accuracy

dial indicator

VK 718	Serial Number	-	Test Date		-
Testing equipment	Allowable deviation (mm)	Test results	remark
Verticality between the mutual movements of each axis direction	X—Z	0.02/300	-	-
-	Y—Z	-	0.02/300	-	-
-	X—Y	-	0.02/300	-	-
The movement of the bed in the X and Y axis directions and its parallelism above it	X	dial indicator	0.02/300	-	-
-	Y	-	0.02/300	-	-
Deviation within the spindle hole	Inner end a	dial indicator	0.01	-	-
-	External end b	-	0.02	-	-
The right angle between the spindle centerline and the bed surface	左右	dial indicator	0.02/300	-	-
-	front and back	-	0.02/300	-	-
X	500/0.01	-	-
-	Y	-	500~1000/0.015	-	-
-	Z	-	1000~2000/0.02	-	-
X	500/0.01	-	-
-	Y	-	500~1000/0.01	-	-
-	Z	-	1000~2000/0.01	-	-
Machine tool levelness		box level	1000/0.04	-	-

(1) General Technical Conditions for Metal Cutting Machine Tools GB9061-2006

(2) General Technical Conditions for Safety Protection of Metal Cutting Machine Tools GB15760-2004

(3) Geometric Accuracy Inspection of Vertical Machining Centers JB/T8771.2-1998

(4) Inspection of Positioning Accuracy and Repetitive Positioning Accuracy of Linear and Rotary Axes JB/T8771.4-1998

(5) General Technical Conditions for Machine Tool Electrical GB/T5226.1-2002