CNC SRB Machines For Sale

SRB-- SKIVING ROLLING AND BURNISHING OF TUBES

THE MOST MODERN, MOST EFFICIENT, FASTEST AND MOST ECONOMICAL PROCESS TO RAPIDLY FINISHING THE INTERIOR TUBE DIAMETER (ID) FOR HYDRAULIC CYLINDER APPLICATIONS

Deep hole skiving roller and burnishing machine

Deep hole skiving roller and burnishing machine is a new type of efficient deep hole machine, independently developed by our company reference to the technology of the similar foreign machines. Deep hole skiving roller and burnishing machine is equipped with large power, strong rigidity, wide margin of machining process and extremely high machining efficiency, is the ideal equipment for all kinds of cylindrical workpieces with deep holes. Deep hole skiving roller and burnishing machine can process a variety of mechanical hydraulic oil cylinder. Deep hole skiving roller and burnishing machine is mainly used for boring and rolling processing, machine tool adopting the precision boring cutter rotating scrape, rolling processing technology. Remove chips in front when boring and scraping and the boring way is to push boring, granted by the oil tank in central of boring bar, remove chips on the head of a bed. The rolling is the post-tensioning, applies the high-speed scraping and boring rolling head, can processing efficiently the oil cylinder, reversing the traditional process of a rough boring, glossy boring, grinding cylinder, the production efficiency is the traditional process of 5 to 10 times. Application of this machine will have an epoch-making revolution for the oil cylinder production. Cylindricity and alignment of processing workpieces is very high, cutting and rolling speed can reach 1 m/min ,with the cylinder produced by cold drawn pipe, cutting and rolling speed can reach 0.3 m/min with the cylinder produced by hot rolled pipe. Finish the molding at the first time.

 

Hot Rolled cylinder , ID Φ100mm~Φ250mm, cutting thickness ≤5 mm on single side,Adopts Hydraulic SRB Head by One pass.

Cold-drawn cylinder ID Φ38mm~Φ250mm, cutting thickness ≤0.5 mm , machined with pneumatic or hydraulic type SRB head by one-pass

Machine function

The accuracy of SRB machine machining over-classes largely the honing or other operation in precision, roundness and speed at a much lower cost

Why we use SRB machine compared with honing machine

However,the cost Aspectis equally as important as the quality.Here,the great advantage of skiving and roller Burnishing is in the rapid production of the tubes,which primarily reduce The price compared With honing.Afurther advantage of skiving and roller burnishing is in the long manufacture Lengths that can be produced.

 

Our complete range of high tech specialized skiving and roller burnishing machines introduced by Guanlu's allows manufacturers to finish cylinder bores in machining times that are up to 90% shorter than those achieved by honing. All processes for production of high-quality component surfaces inside tubes can be replaced by skiving and roller burnishing (e.g. precision turning, grinding, reaming, honing, super finishing, lap grinding, polishing). Guanlu's combined manufacturing process of skiving and roller burnishing to produce hydraulic cylinders and cylinder tubes in one single setup at incredible speed, has displaced the alternative manufacturing process honing almost completely because simultaneous skiving and roller burnishing is much more economical and faster.

 

On Guanlu's specialized machine the cylinder tube is simultaneously skived and roller burnished. The skiving tool is a type of modified floating reamer that produces a geometrically true round bore. Skiving reduces diameter deviations and ovality caused by the raw stock. Roller burnishing is a method of cold-working metal surfaces to induce compressive residual stresses and produce mirror-like surface finishes of 0.03-0.20 Ra. The rolling, which takes place in the same process, ensures the required internal diameter tolerances and asperity values This roller burnishing operation has been designed for processing most types of extruded tube, including welded, seamless and drawn-overmandrel types. The latest tool generation can even combine three manufacturing processes – counter boring, skiving and roller burnishing - in one step.

 

Working Mode: Three type:

Workpiece rotate, cutting tool fixed and feed ;

Workpiece fixed, cutting tool rotate and feed

Workpiece and cutting tool rotate relatively, cutting tool feed

Machine loading and unloading SRB machines:

 

Machine model :

Item name		Parameter
Machine model		TGK200	TGK250	TGK320	TGK400		TGK500		TGK630
Workpiece dimension	Inner hole(mm)	38-200	38-250	100-320	160-400		200-250		230-630
	Out hole(mm)	45-250	45-300	120-380	200-500		250-650		300-800
	Working length(mm)	500-L*	500-L*	600-*L	600-L*		600-*L		600-L*
Speed	Spindle speed(r/min)	200-1200	1600-1000	125-800	100-630		80-500		80-450
	Oil pressure head move(mm/min)	1500	1500	0-2000	0-2000		0-2000		0-2000
	Headstock move(mm/min)	0-3000	0-3000	0-3000	0-3000		0-3000		0-3000
Motor power	Spindle motor	30/70	37/45	60	75		90		100
	Feed servo	4.4	4.4	7.5	7.5		7.5		7.5
Coolant system	Oil tank volume(L)	3200+1850	3200+1850	6000+2100	6000+2100		6000+2100		6000+2100
	Pump Flow	600	600	800	1000		1200		1500
	Filtering	30
Motor totally power	80	80	100	120		160		200		250
Control system	SIEMENS /KND

 

Advantages of TGK25 series CNC deep hole skiving and Roller burnishing machine：

The overall layout of the machine tool is scientific and reasonable, and the overall appearance is simple and beautiful. The host sheet metal protection adopts plastic spray treatment.

 

Machine Bed:

The total width of the bed is 800mm, the span width of the two guide rails is 650mm, the width of the single guide rail is 160mm, and the thickness is 50. When the bed is designed, it is optimized by finite element analysis, so that it has the characteristics of reasonable quality, high rigidity and high precision.

 

The bed is a special bed designed by CNC deep hole skiving and roller burnishing machine . This bed has a large installation space in the middle. The interior of the bed features stiffeners in a "W-shaped" layout. The middle plane of the bed is slightly higher than the planes of the oiling grooves on both sides, And there are long round holes on both sides for convenient oil return.

 

Lead screw auxiliary support device

 

Lead screw and its installation method:

The feed shaft (boring bar box movement) of our company's CNC deep hole skiving and roller burnishing machine tool uses a ball screw pair with a nominal outer diameter of Φ80mm; The oil pressure head moves by using a trapezoidal screw pair with an outer diameter of Φ80mm. Four sets of special rolling bearings for precision screws are installed at both ends of these two screw pairs. This installation method has the advantages of high rotation accuracy of the lead screw, large axial bearing capacity and long service life, but high production cost.

 

Headstock (equipped with double rotating machine tool) and head frame (equipped with single rotating machine tool)

Both the spindle of the headstock and the headstock frame adopt largehole structure, which has good chip removal ability. Because the headstock dopts a large hole structure, the bearing specifications are large and has strong rigidity.

 

Workholding device

When the workpiece clamping device is working, the servo motor is used to drive the bracket body to move through the trapezoidal screw, which has self-centering effect. Servo clamping has the characteristics of convenient adjustment of movement speed and clamping force .The workpiece clamping device is suitable for both rotating and non-rotating working conditions of the workpiece. By replacing the corresponding modules, its functions can be converted.

 

Workpiece auxiliary supporting device:

The workpiece auxiliary support device of our CNC deep hole skiving and roller burnishing machine adopts a new design structure. The device is equipped with worm gear, worm and screw lifting mechanism, has a large speed reduction transmission, and the handwheel is located on the side, so the assembly operation is relatively light, but the production cost is high.

 

The workpiece auxiliary support device and the workpiece clamping device are integrated and independent, and can be flexibly configured according to the specifications of the machine tool and the characteristics of the workpiece

 

The outer diameter of the workpiece of this device is within the range of Φ50mm ~ Φ400mm, which can meet the use requirements. Because the variation range of the outer diameter of the workpiece is large, the moving distance between the upper and lower of the bracket body is required to be large, and the installation space in the middle of the bed is required to be large. Therefore, it is necessary to design a special bed.

 

 

Carriage:

The carriage of our CNC deep hole skiving and roller burnishing machine tool is divided into feed carriage (boring bar box moving) and oil pressure moving carriage, and their structures are similar. The feed carriage adopts the integrated design structure of nut seat and carriage, which makes the carriage have high rigidity and high precision retention. The manufacturing process of the guide rail surface of the carriage plate adopts the anti-friction coating injection molding technology. The anti-friction coating has the characteristics of good wear resistance, small compression ratio and wide working temperature range. Ensure the stability and durability of product accuracy; The anti-friction coating contains special materials, and the coating has self-lubricating properties; The anti-friction coating has small friction coefficient and excellent anti-crawling performance.

Main motor installation

The motor adjusting device for the spindle of the headstock and the boring bar box can adjust the motor in the left, right and up and down directions, so as to facilitate the adjustment of the two synchronous pulley wheels to higher position accuracy, and is beneficial to reduce the noise of the synchronous belt and improve the service life of the synchronous belt. However, the motor adjusting device has a complicated structure and high production cost.

 

Boring bar bracket

The boring bar bracket adopts a hook design. When the boring box is retracted, the boring bar bracket is pulled to move together. When the boring bar bracket moves to the set position, the hook will be automatically disengaged.

When the boring bar bracket adopts the chain structure to move, when the boring bar box moves forward, the chains will tie when they are stacked together, and when the boring bar box moves backward and pulls the knotted chain, the chain will break.

 

Cooling system:

The main function of the cooling system is to use circulating liquid medium to lubricate and cool the cutting area, and remove chips at the same time. The cooling system adopts an above-ground oil tank structure. After the iron filings in the cooling oil are taken away by the chip removal machine, they are filtered through three stages: filter screen (coarse filtration)-magnetic filtration-filter element filter fine filtration. The final filtration accuracy can reach 50 μm. The machine tool cooling system consists of three parts: bed oil return tank, chip removal machine and cooling oil tank. Among them, the total oil storage space of the chip remover and the cooling oil tank is about 8000L, and the larger oil storage space is conducive to suppressing the oil temperature increase of the cooling oil. The cooling system is equipped with a filter element filter, and the loss of the filter element relative to the filter paper tape is low. The cooling system is equipped with pressure, flow, liquid level, temperature sensors and display instruments, which are mounted on the control panel for easy observation.

 

 

Electrical cabinet:

The electric box structure is American structure, with good ventilation, heat dissipation and dustproof performance. Electric box with refrigerator. The low-voltage electrical components are Schneider brand to ensure the stable operation of the machine tool in hot weather.

SROA Type hydraulic skiving rolling burnishing head

Rough boring, rough scraping, fine scraping and rolling are integrated, which can complete the mirror surface processing of the inner wall of hot-rolled tubes in one go The 4+4 blade cutting is adopted, and the boring head is supported by 4 hard alloy guide keys to ensure no clearance movement The entire tool is made of high-quality steel and features stable and reliable performance The fully automatic expansion and contraction design increases the machine tool's movement rate and reduces the labor intensity of workers The processing efficiency is 5 to 10 times that of traditional cutting tools Maximum center deviation: 0.5mm/m Expansion and contraction pressure: 4-10Mpa

 

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