FORM-2
THE PATENTS ACT, 1970
(39 OF 1970)
COMPLETE SPECIFICATION.
(Section 10; Rule 13)
Title: - A double shuttle fly-cut off with burr free cold cut off as well as friction sawing machine
ITL INDUSTRIES LIMITED
111 , Sector-"B", Sanwer Road ,
Indore, 452015 (MP.).India
The following specification particularly describes the nature of this invention and the manner in which it is performed:-

Filed of the Iavention:-
High speed burr free cold cutoff carriage (2) along with a additional shuttle (3) for friction saw (To use in-line with conventional and high speed tube mills up to 120 met/ min speed to get 20 cuts of 6 met long pipes with cut length accuracy as good as ± 2 mm) with least bums and perfect square cuts without any dimple and friction saw on the same Track for cutting higher wall thickness tubes. Eco friendly machine has been designed to offer least per cut cost as it consumes very low power (machine uses very low overall power of 30 KW as against conventional similar saws which uses 60 to 75 KW ) and offers more number cuts before re-sharpening of HSS Saw blades. For thick wall and tough steel tubes, TCT saw Blades can be used, highly user friendly computer program, needs very few data to enter by mill operator with fool proof and fault diagnostic features, friction saw drive is of 40 KW A.C. Motor. This machine provides facility for both type ( one is Burr free cold cut off -(2)) and ( other is Friction machine-(3) ) of cutting on the same track and on line with simply selecting a particular system by a selector switch on the main control panel. Friction saw cutting keeps per cut cost very low for higher wall thickness tubes.
Back Ground:-
The conventional model are not highly efficient and output of the machine is very low hence the costing of overall project is very high .
The object of the present invention is that the conventional model available in the market is very huge size and not easy to operate but the present invention is easy to operate and compact in size.
The further object of the present invention is that the machine available in the market are not computer friendly hence very difficult to operate and monitor but present invention is highly computer friendly , which in turns operating cost, and deploy of man power is very less

Description of invention :-
The present invention relates to a High speed burr free cold cut off carriage saw along with an additional shuttle for friction saw to use in-line with conventional and high speed tube mills up to 120 met / min speed to get 20 cuts of 6 met long pipes with cut length accuracy as good as + 2 mm with least burrs and perfect square cuts without any dimple and friction saw on the same Track for cutting higher wall thickness tubes. Eco friendly machine has been designed to offer least per cut cost as it consumes very low power ( machine uses very low overall power of 30 KW as against conventional similar saws which uses 60 to 75 KW) and otters more number cuts before re-sharpening of HSS saw blades. For thick wall and tough steel tubes, TCT saws blades can be used. Highly user friendly computer program needs very few data to enter by mill operator with Fool proof and fault diagnostic features. Friction saw drive is of 40 KW AC. Motor. This machine provides facility for both type of cutting on the same track and on line with simply selecting a particular system by a selector switch on the main control panel. Friction saw cutting keeps per cut cost very low for higher wall thickness tubes.
Machine has been designed to keep minimum inertia load of shuttle which reciprocates at very high speed, with high technological & metallurgical combined properties aluminum alloy has been used to bring down moving shuttle weight from conventional shuttle design of around a tone to only 325 kgs. Rake (4) is mounted on the machine bed and Pinion on back lash free reduction gear box fitted with low weight servo motor, with the rotation of pinion, shuttle moves forward or reverse very precisely to offer close tolerance cut length.
Saw head slides forwaro & reverse on linear motion guide bearings and moves thru ball screw coupled to servo motor which is mounted on inclined table across the pipe axis (5). Saw head gear box is coupled with a synchronous motor which

rotates the saw blade at programmed speed depending upon saw blade properties and tube material quality. When saw blade gets dull / worn out, computer senses the condition and give alarm to change the blade with new one. This feature saves excessive wear of saw blade tooth which helps in re-sharpening.
Shuttle stroke can be used up to 4000 mm but depending upon the tube size , thickness and mill speed .stroke length reduces automatically avoiding unnecessary wear tear of sliding parts. Similarly, to enhance tool life, saw cutting speed and feed rate is adjusted automatically, for thick wall tube and sections special feature of slow entry and slow exit allows cutter to run without excessive loading due to pipe wall contact area.
depending upon tube size , saw blade size can be selected to economize tool cost as small diameter cutters are much cheaper, also after re-sharpening saw blade size reduces and can be used for small diameter tube without any difficulty, depending upon saw blade diameter, machine automatically adjusts saw head stroke.
A Centralized lubrication system has dedicated PLC to lubricate all the moving parts as programmed depending upon function.TCT saw blades tooth are cooled and lubricated micro mist spray system. ITL offers Eco friendly mist oil to enhance saw blade life.
Tube clamping is done by pneumatically operated double acting clamps such that both the jaws retracts back to avoid rubbing and scratching on blade. clamping jaws can be changed quickly, hardened and ground alloy steel Length measuring roll is connected to rotary encoder and the whole assembly is housed in loaded sliding biock.

Technical Specification:
Numerically controlled burr free cold cutting circular sawing cut-off carriage with V.F.D. Controlled Sawing speed and SERVO controlled Feed & Cross Travel Speeds as per specifications given below : -
1. Models Suitable for pipes range-1/2" to 21/2"NB and 1/2" to 4" NB
2. Suitable for Square up-to 90x90mm & Rectangular sections up-to 100x50 mm.
3. Maximum 150 mtrs./ min. speed can be achieved ON-LINE for 3/4" dia x 1 mm thick wall tube with 6 met cut length (25 cuts/min).
4. Shuttle travel stroke Length (maximum)- 4 Meters.
5. C/L of tube from Ground floor - 900 mm. Approx.
6. Machine Approx. Wt. - 2500 Kg.
7. Machine overall Dimensions - 5000 (L) x 1500 (W) x 1550
(H) '
8. Total Power Input rating - 30 KW, Servo Motors for Shuttle
Indexing and Saw head movement.
9. Range of Tube Length to be cut - 4 to 12 Meters.
10. Saw blade—HSS or TCT from 350 to 450 diameter
11. Micro Mist Spray System of UNIST USA for TCT saw Blades.
12. PLC conLolied Automatic Centralized Lubrication System.

Computer Program data information—
1. Tube -round or section and size
2. Cut Length.
3. Number of tubes to produce in the lot for particular length.
4. Frequency for sample tube and excess length needed.
5. Constant Feed or Slow Entry Stow Exit function of cutting feed.
6. Saw Blade diameter and thickness.
7. Type of Saw Blade -HSS or TCT
Operational Sequence
• After entering the desired data's in the computer mil! is started.
• Length measuring device starts measuring the length.
• No sooner programmed length in measured, system gets a signal and shuttle starts moving.
• In fraction of second shuttle speed synchronizes very precisely with the tube speed.
• Tube Clamping Vise operates and tube is clamped.
• Sensor confirms the tube clamping and Saw head starts moving to cut the
tube. • After cutting, Saw head retracts back rapidly. • Tube clamping Vise operates and de-c!amps the tube. • Shuttle stops and return back to home position and get ready to receive
new commana for the next cut.

We Claim:-
1. A pipe cutting machine with two different features on single platform Burr free cold cut off and Friction Sawing machine (3) comprising a High speed burr free cold cutoff carriage (2) with an additional shuttle (3) for friction saw to get 20 cuts of 6 met long pipes with cut length accuracy upto ± 2 mm, and with perfect square cuts without any dimple and friction saw on the same Track
2. A machine as claimed in claim 1, wherein the TCT saws blades can be used, on which a minimum inertia toad of shuttle which reciprocates at very high speed, in which an aluminum alloy has been used to bring down moving shuttle weight is mounted on the machine bed and Pinion on back lash free reduction gear box fitted with low weight servo motor, with the rotation of pinion, shuttle moves forward or reverse very precisely to offer close tolerance cut length,
3. A machine as claimed in claim 1, wherein the saw head slides forward & reverse on linear motion guide bearings and moves thru ball screw coupied to servo motor which is mounted on inclined table across the pipe axis (5),
4. A machine s claimed in above claims wherein the Saw head gear box is coupled with a synchronous motor which rotates the saw blade at programmed speed depending upon saw blade properties and tube material quality,
5. A machine as claimed in claim 4, wherein the shuttle stroke can be used up to 4000 mm subject to tube size, thickness and mill speed, stroke length reduces automatically avoiding unnecessary wear tear of sliding parts,

6. A machine as claimed in claim 1, wherein the saw blade size can be selected as small diameter cutters depending upon saw blade diameter, machine automatically adjusts saw head stroke.
7. A machine as claimed in claim 6 wherein the Centralized lubrication system to lubricate all the moving parts as programmed depending upon function.
8. A machine as claimed in claim 1, wherein the tube clamping is done by pneumatically operated double acting clamps such that both the jaws retracts back to avoid rubbing and scratching on blade,
9. A machine as claimed in above claims wherein a measuring roll is connected to rotary encoder and the whole assembly is housed in loaded sliding block,