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Floor-type Horizontal Boring Mills
TK6913 CNC Floor Type Boring and Milling Machine
TK6913 CNC Floor Type Boring and Milling Machine Spindle rotation (SP axis) uses 3 steps shift gear box with SIEMENS AC servo motor drive, through gear couple to hollow milling spindle.
TK6913 CNC Floor Type Boring and Milling Machine
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Description
Briefs
Equipments
Optional
Brief Parameters
Spindle diameter: Φ130mm
Column travel (X): 4000+n*1000mm
Spindle box vertical travel (Y): 2000-3000mm
Spindle axial travel (Z): 800mm
Ram travel (W): 800mm
Machine specifications
Items
TK6913
Boring spindle diameter
Ф130mm
Spindle taper
ISO 50
Main motor power- servo motor
37kW
Spindle speed
2-1500rpm
Max. Torque of boring head
2500Nm
Size of ram section
420X480mm
Travel
Longitudinal travel of column ( X axis)
4000+n*1000mm
(4-30m)
Vertical travel of boring head (Y axis)
2000-3000mm
Boring spindle travel (Z axis)
800mm
Ram travel (W axis)
800mm
Feeding speed
Feeding speed of column longitudinal ( X axis)
1~3000mm/min
Feeding speed of boring head (Y axis)
1~3000mm/min
Feeding speed of boring spindle (Z axis)
1~2000mm/min
Feeding speed of ram
(
W axis
)
1~2000mm/min
Rapid travel speed (X axis)
8000mm/min
Rapid travel speed (Y axis)
6000mm/min
Rapid travel speed (Z/W axis)
4000mm/min
Accuracy and Repetitive positioning accuracy
X, Y axis positioning accuracy
±0.025/1000mm
Z, W positioning accuracy
±0.03/1000mm
X, Y repetitive positioning accuracy
±0.020/1000mm
Z, W repetitive positioning accuracy
±0.025/1000mm
Equipments
Item 01
Descriptions
01.01
SIEMENS840Dsl
01.02
Manual pulse generator
01.03
Automatic lubrication system
01.04
Automatic hydraulic clamping system
01.05
X axis guide-way cover
01.06
Y axis guide-way cover
01.07
Balancing and accuracy compensation mechanism
01.08
X/Y/Z liner axis
01.09
Tri-color light
01.10
Work lamp
01.11
Foundation bolts and pads
Optionals
Item 02
Descriptions
02.01
Rotary table
02.02
Face plate
02.03
Right angle milling head
02.04
Universal milling head
02.05
Floor bed
02.06
40 or 60 stations ATC
Features
Machine layout
This machine is of single column, spindle head hang aside, column fixed on saddle, and saddle moves along machine bed guideway, spindle head moves along column guideway, main motion is the spindle rotation.(See below drawing)
Four liner axes are:
1. Column cross travel X
2. Vertical travel of spindle head Y
3. Axial travel of ram W
4. Axial travel of boring spindle Z
Basic parts
Bed, column, ram, and ram saddle are all adopt high quality ageing treated cast iron, and ram is aging treated nodular cast iron. Adopt the FEM to get the highest rigidity. The bed is closed boxy shape with reinforce rod and reasonable multi supporting points. The column is with four sides double-layer wall structure.
Guideways
The three linear guideways of the X,Y and Z axes are all compound guideways (sliding guideways with plastic inserts combined with guideways with rollers ).The connect parts also with steel strip inserts. They are of high contact rigidity, low friction, wear resistant, high damping capability, and low high-frequency vibration, high accuracy, self-lubrication, and easy maintenance. X Y & Z equipped with hydraulic clamp device.
Spindle system
Spindle consist of hollow spindle (milling spindle) and boring spindle. The bearing spindle adopts the imported bearing, and spindle pull method is disk spring clamping and hydraulic loose; Material of the spindle is 38CrMoAlA electroslag-refined, nitrated steel. Over 30 operations are required for processing the spindle and its mirror surface has ground and lapped.
Main driven system
Spindle rotation (SP axis) uses 3 steps shift gear box with SIEMENS AC servo motor drive, through gear couple to hollow milling spindle, and realize the rotation of boring spindle. High/middle/low hydraulic auto shift realized by hydraulic controlled oil cylinder dial, and approach switch inspects the dial position. The structure is of large speed area, low power loss, and big output torque. Meanwhile internal the ram constanting oil cycle cooling method adopted to guarantee the rotation accuracy of spindle, reduce the heat thermal deformation (power torque figure below).
Feed mechanism
X axis adopt the double servo driven structure which consist of double servo motor+ high torque planet decelerator +double pinion+ high accuracy rack. The double servo motor controlled by CNC system and through the electrical automatic adjustment method to eliminate transmission gap between pinion and rack, this structure has the transmission accuracy, high efficiency and reliable performance characteristics.
For Y, Z and W axis use SIEMENS 1FT6 AC motor through deceleration device to driven the high rigid preloading roll ball screw rod nut pair to realized each axes’s feed. This kind of structure is compact and reasonable with characteristic of high precision and high transmission efficiency. At the same time, servo motor for Y axis with brake function can prevent the accident of spindle sudden fall when power blankout.
Lubrication
Gears and bearings in gear box are lubricated by mechanical oil, ballscrew couples are lubricated by pouring oil, spindle bearings are lubricated by imported oil air.
Guideway covers
X axis: stainless extendable cover, Y axis: metal loricae type, three sides covered.
Balancing and accuracy compensation mechanism
1. The balance for spindle head is realized by a counter weight which is in column and move together with spindle head.
2. Ram balancing compensation: ram adopts servo following balancing compensation mechanism which consist of servo motor + worm gear and worm reducer+ ball screw pair + wire rope and pulley to form a closed servo balancing system. The basic theory of this system is when ram move to generate gravity change the compensation system will automatically compensate as per setting compensation program to realized nonlinear ram servo balancing compensation.
3. Accessories compensation: Accessories compensation is for different accessories fixed with the machine. It is realized by an oil cavity through an approach switch which inspects and identifies accessories and controls electric hydraulic proportion valve by system.
Hydraulic systems
Independent hydraulic tank to provide the oil its main function is for tool clamp and loose, spindle speed change and machine lubrication. The hydraulic oil and constant temperature oil are separated by each pump. Adopting the oil coolant also enhance the hydraulic unit and hydraulic system reliability. The dimension of hydraulic unit is international standard.
CNC system
Equipped with SINUMERIK 840D SLsystem, Sinamics servo drive system and SIMATICS7-300 PLC.
Operation cabinet
Machine equipped with operation cabinet which can not only move along with spindle head but also can perform horizontal movement.
Brief Parameters
Spindle diameter: Φ130mm
Column travel (X): 4000+n*1000mm
Spindle box vertical travel (Y): 2000-3000mm
Spindle axial travel (Z): 800mm
Ram travel (W): 800mm
Equipments
Item 01
Descriptions
01.01
SIEMENS840Dsl
01.02
Manual pulse generator
01.03
Automatic lubrication system
01.04
Automatic hydraulic clamping system
01.05
X axis guide-way cover
01.06
Y axis guide-way cover
01.07
Balancing and accuracy compensation mechanism
01.08
X/Y/Z liner axis
01.09
Tri-color light
01.10
Work lamp
01.11
Foundation bolts and pads
Item 02
Descriptions
02.01
Rotary table
02.02
Face plate
02.03
Right angle milling head
02.04
Universal milling head
02.05
Floor bed
02.06
40 or 60 stations ATC
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