1. Features
The CNC double column VTL model CK5250-2 is a super rigid machine with big machining capacities, stable & rigid structure, heavy job load and high machining efficiency.
Functions: 1. I.D. turning, O.D. turning, end-facing,
2. cone turning,
3. grooving, parting / cut off,
4. drilling, boring, reaming,
5. curve cutting,
6. threading, etc.
2. Machine Body
The main body of the machine is made of high rigid resin castings with vibratory stress relief (VSR) aging treatment. Small cast iron bodies are hardened with high temperature. All the steel parts are thermal refined.
3. Machine main structure
DC75 kW main motor with precision speed regulator or AC 55 kW main motor with VFD unit and gear box are adopted for drive of the table so that infinite variable speeds can be achieved within each speed range. Double row cylindrical roller bearing is equipped under the table. The cone inner ring of the bearing can eliminate radial clearance effectively for high precision and stable machining at high speed. Precision ballscrews are used for drive of tool head vertically & horizontally.
4. Hydrostatic working table
Features of hydrostatic table adopted with constant flow synchronous pump:
a. low friction for permanent life of table,
b. heavy load capacity on table,
c. oil film between machine base and table absorbs cutting vibration & loads,
d. a safety mechanism controls the hydrostatic pressure for optimum safety.
5. CNC system, control panel & electric cabinet
Siemens 828D s.l. CNC controller with reliable electrics (mainly ABB, Schneider, Siemens) is equipped on the machine. Centralized operation button and control panel stand is fitted for easier operation (German tech.)
6.Machine specifications
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Specifications
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CK5250-2
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Max. cutting diameter
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5000 mm
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Table diameter
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4000 mm
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Max. workpiece height
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3150 mm
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Max. workpiece weight
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32 tons
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Max. torque of table
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100,000 N.m
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Max. cutting force of right tool head
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35,000 N
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Max. cutting force of left tool head
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30,000 N
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Toolpost
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Toolpost on left tool head: manual type, square type.
Toolpost on right tool head: NC type, electric driven, automatic indexing, 4 stations
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Speed range of table
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0.5-50 rpm
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No. of speed steps of table
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3 steps, infinite variable speeds within each step
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Horizontal travel of tool head
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2800 mm
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Vertical travel of tool head
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1600 mm
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Rapid traverse speed of tool head
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4000 mm/min
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Elevation speed of cross rail
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380 mm/min
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Power of main motor
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DC 75 kW
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CNC system
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Siemens 802D s.l.
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Machine weight
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88 tons
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Note: Manufacturer reserves the right to improve & modify without prior notice.
7. Machine main parts & components
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No.
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Item
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Mfgs
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Remarks
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1
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Siemens 828D s.l. CNC controller
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Siemens, Germany
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2
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Axis feeding motors
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Siemens, Germany
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3
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Centralized control panel stand
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China make
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Germany tech.
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4
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Air conditioner for electric cabinet
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Tongfei brand, China
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|
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5
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Main motor
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China make
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6
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DC speed regulator
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Eurotherm, UK
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7
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Bearings on ballscrew
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NSK, Japan
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8
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Electrics
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Schneider / Siemens / ABB
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Made in China
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9
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Centralized lubrication unit
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Bijur, China
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Japanese tech.
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10
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Hydraulic valves
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Parker / Bosch Rexroth
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11
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Driving belt on main motor
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Japan make
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12
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Zinc-Aluminium alloy strip
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China make
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Anti-wear
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13
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Turcit coating material
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Lanling 6S
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14
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Ram
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China make
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#45 forged steel
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15
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Columns, cross rail, table
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China make
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HT 300
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