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100% Original Gun Drilling Machine Shops - TSK21200 CNC Heavy Type Deep Hole Drilling And Boring Machine, cylinder boring machine – Premach

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100% Original Gun Drilling Machine Shops - TSK21200 CNC Heavy Type Deep Hole Drilling And Boring Machine, cylinder boring machine – Premach Detail:

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Function Description

The machine tool is suitable for processing large hydraulic cylinders, high-pressure boiler tubes, pipe molds, wind turbine shafts, ship transmission shafts and nuclear power tubes.

According to the characteristics of trepanning process, the machine tool is designed to be equipped with relevant parts, special cutter rods, cutters and special trepanning parts, so that the machine tool is more suitable for deep hole trepanning process.

There are two process forms during processing:

A. workpiece rotate, cutting tool reverse rotating and feed;

B. the workpiece rotates and the cutting tool does not rotate but only feeds.

Drilling or boring diameter less than Φ 210, the BTA internal mental chip removal process of oil pressure head supplying cutting fluid, discharging chips and cutting fluid in the inner hole of drilling/boring rod is adopted.

During boring and rolling, the boring rod is provided with cutting fluid to discharge cutting fluid and metal chips forward (at the head of the machine).

During trepanning bigger holes, the process of external chip removal is adopted, the trepanning rod does not rotate and the workpiece rotates. During trepanning smaller holes, adopting the internal chip removal process, both the trepanning rod and workpiece can be rotated.

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Technical parameter

    TSK21200

Working capacity

Range of drilling Dia. Φ50-Φ210mm
Boring Dia. range Φ50mm-Φ2000mm
Drilling/boring depth range 2-25m
Range of trepanning Dia. Φ80-500mm
Max. Dia. of boring rod Φ460mm
Clamping diameter range of main chuck Φ600-Φ2200mm
Clamping diameter range of assistant chuck Φ200-Φ600mm
Clamping diameter range of closed steady rest Φ200-Φ1200mm
Max. loading weight of closed steady rest 40 ton
Clamping diameter range of opened steady rest Φ200-Φ1200mm
Max. loading weight of opened steady rest 60 ton
Max. loading weight of machine with single roller support 120 ton
Max. loading weight of machine with more than double roller supports 150 ton
Max. loading weight of machine with single steady rest 80 ton
Max. loading weight of machine with more than double steady rests 100 ton
Headstock Center height from spindle center to bed 1700mm
Spindle bore Dia. Φ70mm
Taper of spindle bore Φ140mm, 1:20
Range of spindle speed 0.5-180rpm, 2 gears, stepless
Rapid moving speed 2m/min
Rack used for moving headstock Slant teeth, m10
Max. travel of headstock 21m

Travel head with rotating drilling bar

Spindle bore Dia. of travel head with rotating drilling bar Φ120mm
Taper of spindle bore (travel head with rotating drilling bar) Φ140mm, 1:20
Range of spindle speed (travel head with rotating drilling bar) 3-400rpm, 3 gears    
Center height of spindle 800mm
Rack used for moving travel head with rotating boring rod Slant teeth, m10
Max. travel of travel head with rotating boring rod 27m

Feed

Feed speed range (infinite) 0.5-200mm/min
Rapid travel speed of carriage 2m/min

Motors

Main motor power 110KW
Motor power of travel head with rotating drilling bar 55KW     
Motor power of hydraulic pump 1.5KW, n=144rpm.
Travel motor power of headstock 7.5KW, A.C. servo motor
Feed motor power of carriage 11.7KW,2000r/min,  (A.C. servo motor)
Motor power cooling pump 5.5KWx2 groups, 22KW (2 groups)
General motor power (Approx.) 245KW

Others

Guide way width of workpiece 1600mm
Guide way width of travel head with rotating boring rod 1250mm
Reciprocating travel of oil pressure head 250mm
Rated pressure of cooling system 2.5MPa (400L/min), 8MPa (200L/min)
Flow of cooling system 100,200,300,400L/min
Rated working pressure for hydraulic system 6.3MPa
Control system Siemens 828D or others
Overall size for 25m machine 66mx7mx4m
General weight of machine (Approx.) 26 ton

Machining Accuracy

Machining Accuracy of machine (related to workpiece material, heat treatment condition, cutting parameters and cutting oil):

When drilling: aperture accuracy IT9 ~ 10, surface roughness Ra6.3 ~ 12.5;

During trepanning: aperture accuracy IT9 ~ 10, surface roughness Ra6.3 ~ 12.5;

During rough boring: aperture accuracy IT9 ~ 10, surface roughness Ra3.2 ~ 6.3;

During fine boring: aperture accuracy IT8 ~ 9, surface roughness Ra1.6 ~ 3.2;

During rolling: aperture accuracy IT8 ~ 9, surface roughness Ra0.4 ~ 0.8;

Straightness of machined hole (after finishing): less than 0.15/1000mm;

Deflection of machined hole (after finishing): less than 0.3/1000mm.


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100% Original Gun Drilling Machine Shops - TSK21200 CNC Heavy Type Deep Hole Drilling And Boring Machine, cylinder boring machine – Premach detail pictures


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