FORM 2
THE PATENT ACT 1970 (as amended)
[39 OF 1970]
&
The Patents Rules, 2003
COMPLETE SPECIFICATION
[See Section 10 and Rule 13]
TITLE: “A DEVICE FOR BENDING OF WORK AND METHOD OF
BENDING OF WORK”
Name and address of the Applicant:
TATA MOTORS LIMITED, an Indian company having its registered office at Bombay house, 24 Homi Mody Street, Hutatma Chowk, Mumbai 400 001, Maharashtra, INDIA.
Nationality: INDIAN
The following specification particularly describes the nature of the invention and the manner in which it is to be performed.

TECHINCAL FIELD
The present disclosure relates to bending machine, more particularly relates to portable pipe and rod 3D bending machine.
BACKGROUND OF DISCLOSURE
Earlier rod bending was done by fixing it in vice and by hammering it with one hand and measuring the dimensions with scale with other hand.
There are many limitations with this conventional method like time consuming process, more tedious process, less precision, more wastage like if the rod is bent to wrong angles then it is to be scrapped, skilled manpower needed for this operation fixture required to be made to check the dimensions of manufactured part.
STATEMENT OF THE DISCLOSURE
Accordingly the present disclosure a device for bending of work, said device comprising: a plate (1) of predetermined shape configured to form a base of said device; pair of fixed units (2) mounted on either ends of said plate (1); pair of guiding bars (3) connected between the fixed units (2); a moving unit (4) connected slidably to said guiding bars (2), wherein said moving unit (4) comprises a rotating shaft (5) for insertion of work, said rotating shaft (5) is tunable up to 360 degree to facilitate three dimensional bending of said work ; and pair of bending platforms (6a and 6b) connected to outer surface of the fixed pads (2) for bending the work, and also provides for a method of bending of work, said method comprising the steps of: inserting a work to be bent into a rotating shaft (5) of a moving unit (4); sliding the moving unit (4) on guiding bars (3) provided between a pair of fixed units (2), wherein said moving unit upon sliding feeds the work to be bent into a bending platform (6a or 6b); arresting motions of said moving unit (4), said rotating shaft (5) and the work by tightening plurality of knobs (7) provided on the moving unit (4); and rotating a handle (8a or

8b) provided on the bending platforms (6a or 6b) in predetermined direction to bend the work.
BRIEF DESCRIPTION OF THE ACCOMPANYING FIGURES
The novel features and characteristic of the disclosure are set forth in the appended claims. The disclosure itself, however, as well as a preferred mode of use, further objectives and advantages thereof, will best be understood by reference to the following detailed description of an illustrative embodiment when read in conjunction with the accompanying figures. One or more embodiments are now described, by way of example only, with reference to the accompanying figures wherein like reference numerals represent like elements and in which:
FIG. 1 illustrates perspective view of the bending machine.
FIG. 2 illustrates enlarged view of plate.
FIG.3 illustrates assembled and exploded view of moving unit.
FIG.4 illustrates enlarged view of fixed unit.
FIG. 5 illustrates rod bending plat form.
FIG. 6 illustrates pipe bending plat form.
FIGS.7a-7d illustrates bending of rod on rod bending platform.
The figures depict embodiments of the disclosure for purposes of illustration only. One skilled in the art will readily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.

DETAILED DESCRIPTION
In the following detailed description, reference is made to the accompanying figures, which form a part hereof. In the figures, similar symbols typically identify similar components, unless context dictates otherwise. The illustrative embodiments described in the detailed description, figures, and claims are not meant to be limiting. Other embodiments may be utilized, and other changes may be made, without departing from the spirit or scope of the subject matter presented herein. It will be readily understood that the aspects of the present disclosure, as generally described herein, and illustrated in the figures, can be arranged, substituted, combined, and designed in a wide variety of different configurations, all of which are explicitly contemplated and make part of this disclosure.
This disclosure is drawn, inter-alia, to a bending machine. More particularly relates to portable pipe and rod 3D bending machine.
One embodiment of the present disclosure provides a device for bending of work, said device comprising: a plate (1) of predetermined shape configured to form a base of said device; pair of fixed units (2) mounted on either ends of said plate (1); pair of guiding bars (3) connected between the fixed units (2); a moving unit (4) connected slidably to said guiding bars (2), wherein said moving unit (4) comprises a rotating shaft (5) for insertion of work, said rotating shaft (5) is tunable up to 360 degree to facilitate three dimensional bending of said work ; and pair of bending platforms (6a and 6b) connected to outer surface of the fixed pads (2) for bending the work.
In one embodiment of the present disclosure, said moving unit (4) is provided with plurality of knobs (7) to arrest movement of the moving unit (4) and rotating shaft (5).

In one embodiment of the present disclosure, said bending platform (6a) comprises a fixed pad (9a) and moving pad (9b) with handle (8a) to bend the rod by rotating said handle (08a) in predetermined direction.
In one embodiment of the present disclosure, said bending platform (6b) comprises pair of bearings (10) and a linkage on handle (8b) to bend the tube by rotating said handle (8b) in predetermined direction.
In one embodiment of the present disclosure, the handle (8b) is hinged on the bearing (10).
The present disclosure is also in relation with a method of bending of work, said method comprising the steps of: inserting a work to be bent into a rotating shaft (5) of a moving unit (4); sliding the moving unit (4) on guiding bars (3) provided between a pair of fixed units (2), wherein said moving unit upon sliding feeds the work to be bent into a bending platform (6a or 6b); arresting motions of said moving unit (4), said rotating shaft (5) and the work by tightening plurality of knobs (7) provided on the moving unit (4); and rotating a handle (8a or 8b) provided on the bending platforms (6a or 6b) in predetermined direction to bend the work.
In one embodiment of the present disclosure, the rotating shaft (5) is turnable up to 360 degree to facilitate 3D bending.
In one embodiment of the present disclosure, the platform (6a) and platform (6b) are provided for bending the rod and the tube respectively.
In one embodiment of the present disclosure, the rod bending platform (6a) comprises a fixed pad (9a) to support the rod and a moving pad (9b) to push the extended portion of rod when a handle (8a) provided on the moving pad is rotated in the predetermined direction.

In one embodiment of the present disclosure, the tube bending platform (6b) comprises pair of bearings (10) to maintain the uniform diameter of tube and a linkage on handle (8b) to bend the tube when said handle (8b) is rotated in predetermined direction.
FIG.1 in an exemplary embodiment illustrates the portable pipe and rod 3-d bending machine. The machine comprises plate (1), fixed unit (2), guiding bars (3), moving Unit (4) with rotating shaft (5) at its centre, rod bending platform (6a) and pipe bending platform (6b).
The plate (1) as illustrated in FIG. 2 is made with suitable length and thickness. All other parts of the machine rest on plate (1) and so it acts like a base platform/table for the machine. Four holes are made on base plate to fix pair of fixed unit (2) at both ends. And fixed units (2) of shape as shown in FIG. 4 are made with the hole in centre to insert rod/pipe which is to be bent. Two guiding bars (3) of suitable length which should be equal to the length of plate (1) are connected in between the fixed units (2) and lubricating oil is applied on both guiding bars for smooth sliding of moving unit (4).
FIG. 3 in an exemplary embodiment illustrates a moving unit (4) of present disclosure having suitable width and thickness. Two holes of suitable diameter are made to insert the moving unit (4) into two guiding bars (3). Moving Unit (4) is movable along the length of guiding bars (3) and base plate (1). Moving Unit (4) consists of rotating shaft (5) and 3 knobs (7) on its surface.
In one embodiment of the present disclosure, rotating shaft (5) is inserted into a centric hole made in the moving unit (4) and it made to rotate in 360 deg. Also one hole is drilled through the centre of rotating shaft (5) for insertion of tube/rod which is to be bent. Three knobs (7) are provided for arresting various motions of moving unit (4) parts. Knob (7a) arrests the longitudinal movement of moving unit (4) along the length of base plate (1). Knob (7b) arrests the rotational movement of rotating shaft (5). Knob (7c) arrests the longitudinal movement of tube/rod

throughout the length of base plate (1). Scale is embossed on rotating shaft (5) to measure the rotational angles of pipe/rod.
FIG. 5 in an exemplary embodiment illustrates the rod bending plat form (6a). The platform (6a) comprises base unit (11), fixed pad (9a), moving pad (9b), and handle (8a). Base unit (11) of predetermined shape is made and screwed to outer side of fixed unit (2) as shown in FIG.1. Scale is embossed on the circular portion of base unit (11) to measure the bend angles while working. A stepped shaft having stepped diameter made and inserted inside the hole available on base unit (11). A moving pad (9b) is fixed on top of steeped shaft and a handle (8a) of suitable length and diameter is screwed to the step shaft. When handle (8a) is moved, stepped shaft rotates in 180 deg.
A fixed pad (9a) is screwed on base unit (11) and provided with slit to guide the rod onto stepped shaft and moving pad (9b) for bending the rod.
FIG. 6 in an exemplary embodiment illustrates the pipe/tube bending plat form (6b). The pipe/ tube bending platform comprises base unit (11), fixed pad and handle (8b). The base unit (11) is screwed to the other fixed unit (2) as shown in FIG1. Scale is embossed on the circular portion of base unit (11) to measure the angle of bend. Fixed pad is assembled with two bearings (10). Handle (8b) of hole at one end is placed on the desired bearing (10) and moved to bend the pipe/tube.
FIGS. 7a-7d in an exemplary embodiment illustrates the bending of rod on rod bending platform (6a). The method of bending rod using said bending machine comprises acts of; feeding a rod through the slot made in the fixed pad (9a). Before inserting rod into the slot, bending shaft is adjusted to the position shown in FIG. 7a. Now handle (8a) is moved and moving pad (9b) rotates in the same direction of the handle (8b) to bend the rod up to desired angle as shown in FIG. 7b. The bend angle can be measured on scale embossed on base unit (11). Let the first bending takes up in XY plane. Now if we have to bend the rod to some

different angle in YZ or XZ plane after some length x1 mm, Knob (7a) is loosened and moving unit (4) is moved x1 mm longitudinally and again knob (7a) is fixed. Now knob (7b) is loosened, rotating shaft (5) in moving unit (4) is rotated 90 deg. When rotating shaft (5) is rotated rod also rotates since rod is fixed to rotating shaft (5) by knob (7c) and after rotation knob (7b) is tightened. Now the handle (8a) is moved to bend the rod to desired angle in YZ plane as shown in FIG. 7c. Again if it is required to bend the rod to different angle in XZ plane after x2 mm. Moving unit (4) is moved to x2 mm and rotating shaft (5) is rotated 90 deg which will form XZ plane. Now bending can be carried out in XZ plane to the desired angle as shown in FIG. 7d.
In one embodiment of the present disclosure, the bending machine of the present disclosure also used to bend the components such as wires, slab, bars and metal strips.
In one embodiment of the present disclosure, the bending machine can be used to manufacturing of door linkages, manufacturing of brake and clutch fluid lines
Advantages
The bending machine of the present disclosure consumes less time for bending rod or pipe and less tedious operation.
The bending machine of the present disclosure bends the rod with more precision compared to conventional bending operations. And fixture of wood not needed to be manufactured while making components such as door linkages
Further, less skilled operator can handle the bending machine since the angle of bent can be measured using scale provided on base unit.
Furthermore, the bending machine of the present disclosure is portable, minimal components, less space requirement, more precision by measuring of angle during bending, and less scrap. And flexibility provided in bending the tube or rod

in 3-d manner without changing the setup/machine is also achieved. Continuous tube or rod bending can be carried out by feeding additional rods/tubes by bringing the moving unit back to desired distance according to the length of the rod or tube and thus increasing the productivity.
Equivalents
With respect to the use of substantially any plural and/or singular terms herein, those having skill in the art can translate from the plural to the singular and/or from the singular to the plural as is appropriate to the context and/or application. The various singular/plural permutations may be expressly set forth herein for sake of clarity.
It will be understood by those within the art that, in general, terms used herein, and especially in the appended claims (e.g., bodies of the appended claims) are generally intended as "open" terms (e.g., the term "including" should be interpreted as "including but not limited to," the term "having" should be interpreted as "having at least," the term "includes" should be interpreted as "includes but is not limited to," etc.). It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases "at least one" and "one or more" to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles "a" or "an" limits any particular claim containing such introduced claim recitation to inventions containing only one such recitation, even when the same claim includes the introductory phrases "one or more" or "at least one" and indefinite articles such as "a" or "an" (e.g., "a" and/or "an" should typically be interpreted to mean "at least one" or "one or more"); the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited,

those skilled in the art will recognize that such recitation should typically be interpreted to mean at least the recited number (e.g., the bare recitation of "two recitations," without other modifiers, typically means at least two recitations, or two or more recitations). Furthermore, in those instances where a convention analogous to "at least one of A, B, and C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., "a system having at least one of A, B, and C" would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). In those instances where a convention analogous to "at least one of A, B, or C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., "a system having at least one of A, B, or C" would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). It will be further understood by those within the art that virtually any disjunctive word and/or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For example, the phrase "A or B" will be understood to include the possibilities of "A" or "B" or "A and B."
While various aspects and embodiments have been disclosed herein, other aspects and embodiments will be apparent to those skilled in the art. The various aspects and embodiments disclosed herein are for purposes of illustration and are not intended to be limiting, with the true scope and spirit being indicated by the following claims.
Referral Numerals:

Reference number Description
1 Plate
2 Fixed units
3 Guide bars

4
Moving unit
5 Rotating shafts
6a Rod bending platform
6b Pipe bending platform
7 Knobs
8a and 8b Handles
9a Fixed pad
9b Moving pad
10 Bearings
11 Base unit

We claim:
1. A device for bending of work, said device comprising:
a plate (1) of predetermined shape configured to form a base of said device;
pair of fixed units (2) mounted on either ends of said plate (1);
pair of guiding bars (3) connected between the fixed units (2);
a moving unit (4) connected slidably to said guiding bars (2), wherein said moving unit (4) comprises a rotating shaft (5) for insertion of work, said rotating shaft (5) is tunable up to 360 degree to facilitate three dimensional bending of said work ; and
pair of bending platforms (6a and 6b) connected to outer surface of the fixed pads (2) for bending the work.
2. The device as claimed in the claim 1, wherein said moving unit (4) is provided with plurality of knobs (7) to arrest movement of the moving unit (4) and rotating shaft (5).
3. The device as claimed in the claim 1, wherein said bending platform (6a) comprises a fixed pad (9a) and moving pad (9b) with handle (8a) to bend the rod by rotating said handle (08a) in predetermined direction.
4. The device as claimed in the claim 1, wherein said bending platform (6b) comprises pair of bearings (10) and a linkage on handle (8b) to bend the tube by rotating said handle (8b) in predetermined direction.
5. The device as claimed in the claim 1, wherein the handle (8b) is hinged on the bearing (10).
6. A method of bending of work, said method comprising the steps of:
inserting a work to be bent into a rotating shaft (5) of a moving unit (4);

sliding the moving unit (4) on guiding bars (3) provided between a pair of fixed units (2), wherein said moving unit upon sliding feeds the work to be bent into a bending platform (6a or 6b);
arresting motions of said moving unit (4), said rotating shaft (5) and the work by tightening plurality of knobs (7) provided on the moving unit (4); and
rotating a handle (8a or 8b) provided on the bending platforms (6a or 6b) in predetermined direction to bend the work.
7. The method as claimed in the claim 6, wherein the rotating shaft (5) is turnable up to 360 degree to facilitate 3D bending.
8. The method as claimed in the claim 6, wherein the platform (6a) and platform (6b) are provided for bending the rod and the tube respectively.
9. The method as claimed in the claim 6, wherein the rod bending platform (6a) comprises a fixed pad (9a) to support the rod and a moving pad (9b) to push the extended portion of rod when a handle (8a) provided on the moving pad is rotated in the predetermined direction.
10. The method as claimed in the claim 6, wherein the tube bending platform (6b) comprises pair of bearings (10) to maintain the uniform diameter of tube and a linkage on handle (8b) to bend the tube when said handle (8b) is rotated in predetermined direction.
11. A device for bending of work and method of bending of work are substantially as herein above described and as illustrated in accompanying drawings.