Precision Boring Mills: TK6111 Horizontal Table-Type machines

TK6111 CNC Horizontal boring milling machine

Model	TK6111		TK6113
Worktable Size (L×W)	1250×1400mm		1400×1600mm
Spindle Diameter	∅110mm		∅130mm
Transverse Travel of Worktable (X-Axis)	1800-2000mm		1800-2000mm
Vertical Travel of Headstock (Y-Axis)	1200-1600mm		1600-2000mm
Longitudinal Travel of Worktable (Z-Axis)	1200-1600mm		1200-2000mm
Spindle Travel (W-Axis)	600mm		900mm
Worktable Rotation (B-Axis)	CNC control		CNC control
T Slot (Width×Pitch)	22×125mm		22×125mm
Max. Load Capacity of Worktable	5T or customized		8T or customized
CNC Controller	SIEMENS 828D or FANUC 0I -MF
Quantity of Axes	X/Y/Z/W(U) 4 axes (5 axes)		X/Y/Z/W(U) 4 axes (5 axes)
Spindle Taper	BT50(P50T-1)
Spindle Speed	2-3000rpm		2-3000rpm
Main Motor Power	22 kW		30kW
Max. Boring/Drilling Diameter	∅240mm/250mm		∅300mm/80mm
Max. Feeding Force on Spindle	13000Nm		23000Nm
Rapid Traverse of X/Y/Z Axes	3000mm/min		3000mm/min
Feeding Speed of X/Y/Z Axes	5-3000mm/min		5-3000mm/min
Feeding Speed of W-Axis	0.5-1000mm/min		5-2000mm/min
Rapid Traverse of W-Axis	2000mm/min		2000mm/min
Radial Travel of Facing Head Tool Holder	160mm		200mm
Facing Head Speed	4-125rpm		2-125rpm
Max. Machining Diameter of Facing Head Tool Holder	∅630mm (optional)		∅800mm (optional)
Max. Allowable Torque on Facing Head	1300Nm (optional)		2600Nm (optional)
Feeding Speed of Facing Head	0.2-500mm/min (optional)		0.2-500mm/min (optional)
Rapid Traverse of Facing Head Tool Holder	1000mm/min (optional)		1000mm/min (optional)
Positioning Accuracy of X/Y/Z Axes (Full Travel) (GB/T17421.2-2000)	0.018/0.018/0.018mm
Positioning Accuracy of W-Axis (Full Travel) (GB/T17421.2-2000)	0.018/0.018/0.018mm
Positioning Accuracy of B-Axis Rotation	0.08′
Repeatability Accuracy of X/Y/Z/W Axes (Full Travel) (GB/T17421.2-2000)	0.015/0.015/0.015mm
Repeatability Accuracy of B-Axis Rotation	6′
Machine Dimensions (L×W×H)	6.3×3.9×4.5m		6.5×4.2×5m
Machine Weight	28-32T

 

Machine:
The main structure of the machine tool is a cross shaped, integral bed, with fixed
columnsside hanging spindle box, and a rotating workbench running on a cross slide. High
width base, large span and multi support design, high rigidity and high strength. It
integrates a variety of advanced technologies such as mechanical, electrical, optical,
hydraulic and information technologies, and integrates modular, modern, digital and
user-friendly design.
Spindle：
The two-layer nested spindle is adopted, namely the hollow milling spindle and the
boring spindle. The spindle bearing adopts the group bearing imported from
Switzerland, and the optimized design makes the spindle structure with high precision
and good rigidity. The main drive of the machine tool spindle rotation is driven
by an imported spindle speed-adjusting motor, which is secondarily transmitted to
the milling axis through the internal gear of the gearbox, and then realizes the
rotary motion of the boring spindle and the milling spindle.

Headstock:
The spindle headstock is the heart of the boring mills, which is composed of the spindle,
main drive, spindle feed, accurate stop and other devices. The main drive is powered
by stepless speed regulation of the AC speed regulating shaft motor, the electro-hydraulic
control automatically shifts gears, and is transmitted to the milling spindle through the
Gear secondary transmission. The main spindle of this machine has the advantages of
high torque, high power, high speed, wide speed range, high precision, etc. The standard
spindle accurate stop function, chip cooling adopts external cooling and air cooling.

Column:
The double-walled closed frame structure is adopted, and the honeycomb-shaped
high-reinforced plate is arranged in the cavity, which can ensure that the column
has high torsional and bending rigidity, thermal stability and vibration resistance,
and ensures the best machining accuracy of the machine tool.

Base:

With superior strength, bending and torsional rigidity and structural functions, it can ensure
the safe, reliable and high-performance operation of each component on the base, thereby
ensuring the high rigidity, high precision, high stability and high efficiency of the machine
tool.

Slider:
Using finite element analysis method, through advanced sensitivity analysis and
structure optimization technology, excellent rigidity and mass ratio are obtained, and high-quality cast iron parts are used, and after secondary aging treatment, it has high precision retention.

Worktable ：
The rotary shaft of the worktable is centered with high rigidity and high precision
double-row cylindrical roller bearings, and the upper part adopts thrust bearings
to improve the rigidity and torsion resistance of the workbench. It adopts Fagor
circular grating detection and full closed-loop control, which can realize arbitrary
indexing and continuous rotation (B axis), and can be used as a feed axis. The slewing
brake is a hydraulic clamping brake.

Guide rails：

The Y axis adopts ultra-large and ultra-wide precision composite guide rail; the
X and Z axes adopt roller linear guide rails; the B axis adopts double-ring
plastic-coated guide rails,
It has the advantages of small friction coefficient, good vibration absorption, high
precision and long life. The W-axis is guided by high-hardness and precision
double-segment round holes, and the boring shaft is flexible in telescopic movement,
with high precision and good retention. Guaranteed heavy-duty, strong, precision
cutting.

Drive:

The X, Y, Z, W, and B axes are all driven by Siemens AC servo feed motors, among which the X, Y, Z, and W axes are all driven by circular arc gear precision deceleration to drive the ball screw to rotate, and the screw nut moves; the B axis passes through The high-precision and high-rigidity reducer double gear drives the ring gear table to rotate, and the ring gear is ground, which can ensure the transmission accuracy and reliability of the transmission system.

balance:

With the weight balance device, the up and down movement of the spindle headstock is
flexible and stable, safe and reliable, and the accuracy can be compensated.

Spindle cooling:
Spindle constant temperature oil open cooling, control the temperature rise of the
spindle bearing during the cutting process of the machine tool, and reduce the
influence of the thermal deformation of the spindle on the machining accuracy. When
the cooling oil flows through the cooling jacket, it takes away the heat generated
by the main shaft bearing, and cools the main shaft bearing. The cooling oil cools
and lubricates the main transmission gear.

Hydraulic system:

The hydraulic system of the machine tool is composed of hydraulic pumps, hydraulic
actuators, hydraulic control devices and auxiliary devices. The main functions include
main drive gear shifting, spindle loosening broach, and B-axis braking.

Lubrication system:
Guide rails and lead screw nuts adopt centralized lubrication stations, spindle bearingsand
lead screw bearings are lubricated with grease; headstock gears and gearbox bearingsare
lubricated with oil; the planetary reducer must be equipped with lubrication before leaving
the factory, and it is free of refueling and maintenance for lifelong use .