CNC Roll Turning Lathe

PTR-CNC-Series:

2nd-Generation CNC Roll Turning Lathe

PTR-CNC-Series: CNC Roll Turning Lathe

Monoblock casting bed, with 4 hardened and grounded box guideways with double guideway confguration and with good rigidity and high accuracy. Separate feeding guide rail and tailstock guide rail reduces the interference of the component and makes the chip removal more convenient.

This series combines a maximum fexibility (carriages crossing capability) with the maximum rigidity, accuracy and durability. Suitable for high speed steel roll and high boron steel roll, laser roll and ordinary roll precision machining. Lathe bed is made of box Structure MEEHANITE vibration absorbing casting.

General characteristics 4 guideways lathes

These machines are designed for medium-heavy duty tasks (turbine shafts, hydraulic cylinders, wind turbine masts and so on). Profimach CNC lathes are really multitask centres, suited for high performed turning, boring, milling and grinding operations. The machine’s ergonomic feature allows the operator a good visibility throughout the various stages of machining, as well as eases of clamping, and check the product once it is finished. Steady rest must never be replaced during the full operation. Long shafts finished in one single set-up with only one clamping.

LATHES WITH BOX GUIDEWAYS

In comparison with linear guideways with rollers, box guideways have a significantly larger bearing face between the two mounted carriages and the machine bed. This means that the vibrations which are generated during the cutting process at the cutting edge are more effectively transmitted into the machine bed which, due to its high mass and damping characteristics, is extremely effective at absorbing them. This extends the life of tools, and helps them run more smoothly, resulting in better-quality surfaces on the workpiece and better cutting performance. The greater surface area also means that significantly heavier workpieces can be mounted and moved. Additional advantages of box guideways are their extreme durability and low sensitivity to collision damage (“crash situations”).

Heavy duty automated machining.

The CNC Roll turning Lathe is the ultimate replacement solution for Manual Lathes used by Steel Plants in the Roll Shop for Roll machining and pass cutting. Available in various Models, the CNC roll turning lathes drive a huge improvement in productivity, reduce the need for labor, eliminate manual errors and reduce the space required for turning operation in machining the Rolls.

The CNC Roll turning lathes from Profimach provide an economical solution to improve the quality of end product, productivity of the manufacturing process and thus adds to your profitability.

Machine Tools Features

High Torque capacity at Head stock Face plate
Zero backlash with ball screw
Provision for higher cutting force
4 Guide way Lathe Bed
Perfect and Right Dimension of Bearing and Moving Parts
Telescopic cover to protect guideways
Rough and Finish Machining is achieved in the Lathe and with Siemens, Syntec, Mitsubishi,..CNC System programming
Remote diagnostics with ethernet ready machine

Advantages

Reduced downtime by eliminating the manual changing of rolls
Faster machining
Idel for machining split pass forms
Easily replaces more than 5 manual lathes and frees up the space and complexity on the shop floor
Suaitable for composite and carbide rolls
Significantly reduces the operation time and Operator time
Cost savings through reduced inventory of rolls

PTR-CNC Series CNC Roll turning lathes

High Rigid CNC Roll Turning Lathe - 2nd Generation

PTR- 90CNC - Series : maximum load = 4 Ton

PTR-110CNC - Series : maximum load = 8 Ton

PTR-145CNC - Series : maximum load = 20 Ton

PTR-CNC - Series : CNC Roll Turning Lathes

4-Guideway Roll Turning Lathes - Seperate guides for tailstock and Steady rests

PTR-90CNC - Series	Unit	PTR- 9050CNC	PTR- 9065CNC	PTR- 9080CNC	PTR- 9085CNC
CAPACITIES
Max.turning Dia	mm	500	650	800	850
Distance between centers	mm	3000
Max.turning length	mm	2800
Width of guideway	mm	900
Max.weight of workpiece	Kg	4000
SPINDLE
Main motor power	kw	AC22(30)
Model of Spindle nose	mm	C2-11
Spindle hole	mm	100
Taper hole of spindle		Metric 120
Spindle taper		MT5
spindle speeds	r/min	10-500
Chuck	mm	500-630mm 4-jaw manual
FEED
Min.feed increment	mm	0.001/0.001
Rapid speeds	mm/min	3000/6000
Max.travel	mm	330
TURRET
Turret working position		Vertical 4-position ( Horizontal 8 position optional)
Turret dimensions	mm	280x280
Section of tool shank	mm	40x40
TAILSTOCK
Dia. of tailstock quill	mm	200
Travel of tailstock quill	mm	310
Taper hole of tailstock quill		Morse5
OTHERS
Workpiece accuracy		IT6~IT7
Surface roughness	μm	Ra0.8
CNC Control system		SIEMENS 828D / FANUC 0i-TF

PTR-110CNC - Series	Unit	PTR-11065CNC	PTR-11080CNC	PTR-11085CNC	PTR-110100CNC
CAPACITIES
Max.turning Dia	mm	650	800	850	1000
Distance between centers	mm	3500/5000
Max.turning length	mm	2800/4800
Width of guideway	mm	1100
Max.weight of workpiece	Kg	8000
SPINDLE
Main motor power	kw	AC30/AC45
Model of Spindle nose	mm	A2-15
Spindle hole	mm	130
Taper hole of spindle		Metric 140
Spindle taper		MT6
spindle speeds	r/min	8-350
Chuck	mm	630-800mm 4-jaw manual
FEED
Min.feed increment	mm	0.001/0.001
Rapid speeds	mm/min	3000/6000
Max.travel	mm	450
TURRET
Turret working position		Vertical 4-position/ Horizontal 8 positions optional
Turret dimensions	mm	300x300
Section of tool shank	mm	40x40
TAILSTOCK
Dia. of tailstock quill	mm	220
Travel of tailstock quill	mm	330
Taper hole of tailstock quill		Morse6
OTHERS
Workpiece accuracy		IT6~IT7
Surface roughness	μm	Ra0.8
CNC Control system		SIEMENS 828D / FANUC 0i-TF

PTR-145CNC - Series	Unit	PTR-145100CNC	PTR-145125CNC	PTR-145160CNC
CAPACITIES
Max.turning Dia	mm	1000	1250	1600
Distance between centers	mm	5000/6000/8000
Max.turning length	mm	4800/5800/7800
Width of guideway	mm	1450
Max.weight of workpiece	Kg	20000
SPINDLE
Main motor power	kw	AC75
Model of Spindle nose	mm	A2-15
Spindle hole	mm	96
Taper hole of spindle		Metric 140
Spindle taper		MT6
spindle speeds	r/min	5-200
Chuck	mm	1000-1250mm 4-jaw manual
FEED
Min.feed increment	mm	0.001/0.001
Rapid speeds	mm/min	3000/6000
Max.travel	mm	450
TURRET
Turret working position		Vertical 4-position / Horizontal 8 position optional
Turret dimensions	mm	380x380
Section of tool shank	mm	50x50
TAILSTOCK
Dia. of tailstock quill	mm	300
Travel of tailstock quill	mm	310
Taper hole of tailstock quill		Morse6
OTHERS
Workpiece accuracy		IT6~IT7
Surface roughness	μm	Ra0.8
CNC Control system		SIEMENS 828D / FANUC 0i-TF

High precision heavy Duty Roll Turning Lathe

Affordable Roll Turning Machines

PTR-CNC Type Lathe is an heavy duty roll turning lathe suitable for grooving and redressing rolling rolls and cylinders. Machine is specifically designed for roll maintenance shop applications. The four guide ways are able to grant the necessary rigidity and stability for long cylinder machining. The SIEMENS (syntec, mitsubishi,..) control has full potential for demanding performance of this application. The dedicated interface makes machine operations easy and fast for machine high productivity.The main shaft bearing position very close to the faceplate (i.e. application point of radial stresses) in order to reduce the bending momentum with advantages in terms of stiffness. Large special bearings are another element that insures high performance of this component. Main gear diameter is close to the max. roll diameter to increase stiffness, decrease bending momentum and smooth high torque transmission. Guideways are ground on the heavy ribbed cast iron bed: to assure the necessary geometrical precision and a good sliding surface. No reported rail guides are used for our lathes.

2nd Generation CNC Roll turning lathe

General PTR-CNC Series Accuracy
Spindle axial channeling	≤ 0.01 mm
Radial run-out of spindle taper hole	≤ 0.005 mm ( near spindle )
	≤ 0.02 mm ( near 300 mm )
Slide carriage move’s affect on spindle axis parallelism	≤ 0.2 ( only upward bias allowed in vertical )
	≤ 0.015 ( only forward bias allowed in horizontal )
Slide carriage move’s affect on tailstock sleeve parallelism	≤ 0.015 ( only upward bias allowed in vertical )
	≤ 0.015 ( only forward bias allowed in horizontal )
Equal altitudes of spindle and tailstock centre to centre distance	0.02-0.06 ( only tailstock higher allowed )
Finish turning cylindrical precision	0.005 mm (circular degree )
Fine and facing’s affect on cylindrical vertical degree	0.02 / 300 (cylindricity)
	0.01 / 100
Fine and facing’s surface roughness	Ra 0.8
Min. travel of vertical / horizontal	0.001 mm
Repeat location precision	X-axis: 0.006
	Z-axis: 0.020
Single location precision	X ≤ 0.01 mm
	Z ≤ 0.03 mm