Claims:We Claim:
1. A novel welding fixture providing pre-cooling and pre-heating function comprising:
a bottom plate, a base plate, atleast a pipe connector, a clamping pad, an adjusting screw fitting plate, a fastening screw, a main body, a rectangular or square rod, an inner sleeve, a copper base plate, a side plate, a supporting pad, an adjusting screw, a clamping screw and a work piece;
wherein said inner sleeve of the copper base plate and the main body creates a box structure in which dry ice is kept providing pre-cooling function of the work piece; and
wherein heating coils are placed inside said box like structure providing preheating function of the work piece.
2. The novel welding fixture of claim 1, wherein said work piece is adjusted and centered by means of a clamping mechanism provided in the main body.
3. The novel welding fixture of claim 1, wherein said heating coils are supplied with AC or DC power to provide preheating for said work piece.
4. The novel welding fixture of claim 1, wherein said work piece is kept over the copper base plate for welding.
5. The novel welding fixture of claim 1, wherein said copper base plate is supported by the main body and is placed by fastened or unfastened techniques.
6. The novel welding fixture of claim 1, wherein said rectangular or square rod includes a step for seating the inner sleeve.
7. The novel welding fixture of claim 1, wherein liquid nitrogen or liquid oxygen are passed from one side and leave other side through pipe connectors, wherein the liquid nitrogen or liquid oxygen act as cooling agents and cool the base copper plate due to conduction and convection between the inner sleeve and the base plate
8. The novel welding fixture of claim 1, wherein materials for the fixture assembly made of aluminum or other materials are used, which has good thermal conductivity during pre-cooling function.
9. The novel welding fixture of claim 1, wherein materials for the main body, bottom plate and base plate fixed to bottom plate made of insulator materials are used during pre-heating function.
10. The novel welding fixture of claim 1, wherein fins are fixed to base plate have different configurations and in turn change cooling rate by increasing or decreasing the surface area of fins.
, Description:A NOVEL WELDING FIXTURE
FIELD OF INVENTION
[001] The embodiments herein generally relate to welding fixtures. More specifically, the embodiments described herein relate to a novel welding fixture. Particularly, relates to a novel welding fixture in gas tungsten arc welding and gas metal arc welding for pre-cooling and in process cooling and pre-heating functions.
BACKGROUND OF THE INVENTION
[002] Gas tungsten arc welding (GTAW) is an arc welding process that uses a non-consumable tungsten electrode to produce the weld. GTAW is most commonly used to weld thin sections of stainless steel and non-ferrous metals such as aluminum, magnesium, and copper alloys. A constant-current welding power supply produces electrical energy, which is conducted across the arc through a column of highly ionized gas and metal vapors.
[003] Gas metal arc welding (GMAW) is a welding process in which an electric arc forms between a consumable wire electrode and the work piece metal(s), which heats the work piece metal(s), causing them to melt, and join. Along with the wire electrode, a shielding gas feeds through the welding gun, which shields the process from contaminants in the air. The process can be semi-automatic or automatic. A constant voltage, direct current power source is most commonly used with GMAW, but constant current systems, as well as alternating current, can be used.
[004] Generally, gas tungsten arc welding is applicable to wide range of materials and especially good for welding thin sections and delicate work pieces. Gas metal arc welding has high deposition efficiency in certain transfer modes and given electrode size can be used on various thicknesses of materials. Existing prior arts uses welding fixture has not properly support heating and cooling functions.
[005] Therefore, there is a need for a welding fixture to mitigate the aforementioned problems associated with the prior art. Further, there is a need of a novel welding fixture to provide proper heating and cooling functions.
OBJECTS OF THE INVENTION
[006] Some of the objects of the present disclosure are described herein below:
[007] A main object of the present invention is to provide a novel welding fixture which can be used in Gas tungsten arc welding and Gas metal arc welding for pre-cooling and in process cooling and pre-heating functions.
[008] Another object of the present invention is to provide a work piece which can be moved, adjusted and centered by adjusting mechanism.
[009] Still another object of the present invention is to provide a base plate, inner sleeve and fins are made of any material which has high thermal conductivity.
[0010] Yet another object of the present invention is to provide a base plate, inner sleeves & fins which are replaceable.
[0011] Another object of the present invention is to provide an inner sleeve and base plate which can either be fastened to main body or kept loose over main body.
[0012] Another object of the present invention is to provide a main body which also acts as heat sink.
[0013] Another object of the present invention is to provide a bottom plate in the main body which has free holes and threaded holes to fix with welding machine tables.
[0014] The other objects and advantages of the present invention will be apparent from the following description when read in conjunction with the accompanying drawings which are incorporated for illustration of preferred embodiments of the present invention and are not intended to limit the scope thereof.
SUMMARY OF THE INVENTION
[0015] In view of the foregoing, embodiments herein provide a novel welding fixture. According to an embodiment, a novel welding fixture can be used in Gas tungsten arc welding and Gas metal arc welding for pre-cooling and in process cooling and pre-heating functions. The fixture assembly includes a bottom plate, a base plate, atleast a pipe connector, a clamping pad, an adjusting screw fitting plate, fastening screws, a main body, a rectangular or square rod, an inner sleeve, a copper base plate, a side plate, a supporting pad, an adjusting screw, a clamping screw and a work piece. The main body has an inner sleeve made of a copper base plate. In an embodiment, the fixture has the copper base plate over which work piece is kept for welding. The copper base plate is supported by the main body and is placed over the main body by fastened or unfastened techniques. The inner sleeves made of copper plate and the main body touches each together.
[0016] According to an embodiment, the inner sleeve of copper base plate and the main body creates a box structure in which dry ice is kept for pre-cooling. In an embodiment, liquid nitrogen or liquid oxygen are passed from one side and may leave other side. Here, the dry ice, liquid nitrogen and liquid oxygen act as cooling agents.
[0017] In an embodiment, heating coils are placed inside the box like structure for preheating. In another embodiment, heating coils are supplied with AC or DC power to heat for preheating. Heating coils heats the copper base plate and in turn heats the work piece, which is kept over the work piece.
[0018] According to an embodiment, the work piece is adjusted and centered by means of a clamping mechanism provided in the main body.
[0019] These and other aspects of the embodiments herein will be better appreciated and understood when considered in conjunction with the following description and the accompanying drawings. It should be understood, however, that the following descriptions, while indicating preferred embodiments and numerous specific details thereof, are given by way of illustration and not of limitation. Many changes and modifications may be made within the scope of the embodiments herein without departing from the spirit thereof, and the embodiments herein include all such modifications.
BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The detailed description is set forth with reference to the accompanying figures. In the figures the use of the same reference numbers in different figures indicates similar or identical items.
[0021] Fig. 1 illustrates a side view of fixture assembly, according to an embodiment therein;
[0022] Fig. 2 illustrates a sectional view of partially assembled fixture assembly, according to an embodiment therein;
[0023] Fig. 3 illustrates a sectional view of fully assembled fixture assembly, according to an embodiment therein;
[0024] Fig. 4 illustrates a front view of fully assembled fixture assembly, according to an embodiment therein;
[0025] Fig. 5 illustrates a top view of fully assembled fixture assembly, according to an embodiment therein; and
[0026] Fig. 6 illustrates an exploded view of fixture assembly, according to an embodiment therein.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0027] The embodiments herein and the various features and advantageous details thereof are explained more fully with reference to the non-limiting embodiments and detailed in the following description. Descriptions of well-known components and processing techniques are omitted so as to not unnecessarily obscure the embodiments herein. The examples used herein are intended merely to facilitate an understanding of ways in which the embodiments herein may be practiced and to further enable those of skill in the art to practice the embodiments herein. Accordingly, the examples should not be construed as limiting the scope of the embodiments herein.
[0028] As mentioned above, there remains a need for a novel welding fixture. The embodiments herein achieve this by providing a novel welding fixture which can be used in Gas tungsten arc welding and Gas metal arc welding for pre-cooling and in process cooling and pre-heating functions. Referring now to drawings, and more particularly to FIGS. 1 through 6, where similar reference characters denote corresponding features consistently throughout the figures, there are shown preferred embodiments.
[0029] Figure 1 illustrates a side view of fixture assembly, according to an embodiment. The fixture assembly includes a bottom plate 101, a base plate 102, atleast a pipe connector 103, a clamping pad 104, an adjusting screw fixing plate 105 and a fastening screw 106. According to an embodiment, figure 2 illustrates a sectional view of partially assembled fixture assembly. As shown in Figure 2, the fixture assembly includes a main body 200 consists of modular parts namely the bottom plate 101, a rectangular or square rod 202 and the side plate 102 which can be assembled or disassembled. The main body 200 has an inner sleeve 203 made of a copper base plate 201 with the rectangular or square rod 202.
[0030] In an embodiment, the fixture has the copper base plate 201 over which work piece are kept for welding. The copper base plate 201 can be supported by the main body 200 and can be placed over the main body 200 by fastened or unfastened techniques. The inner sleeves 203 made of copper plate, copper base plate 201 and the main body 200 touches each together. Further, the rectangular or square rod 204 includes a step for seating the inner sleeve 203. The bottom plate 101 and the base plate 102 are fastened by fastening screw 106. The rectangular or square rod 202 can be assembled to the base plate 102 by fasteners. The copper base plate 201 has sheets or thin plates called as fins 204 fixed to it which is made up of different configurations fixed to copper base plate 201 as shown in Fig 2.
[0031] Figure 3 illustrates a sectional view of fully assembled fixture assembly, according to an embodiment. According to an embodiment, figure 4 illustrates a front view of fully assembled fixture assembly. The inner sleeve 203 of copper base plate 201 and the main body creates a box structure in which dry ice can be kept for pre-cooling. The fixture assembly further includes a side plate 301, a supporting pad 302, an adjusting screw 303, a clamping screw 304 and a work piece 401. The side plate 301 can be fixed to rectangular or square rod 202 by means of fastening screws 106. In an embodiment, liquid nitrogen or liquid oxygen can be passed from one side and may leave other side through pipe connectors 103. Here, the dry ice, liquid nitrogen and liquid oxygen act as cooling agents. The cooling agents cool the base copper plate 201 due to conduction and convection between the inner sleeve 203 and the base plate 201. The pipe connector 103 is replaced with plug where ever pipe connector is not used.
[0032] In an example embodiment, the material for the inner sleeve 203 can be made of any material which has thermal conductivity. Further, the most of the materials for the fixture assembly can be made of aluminum or other material which has good thermal conductivity during pre-cooling process. In another embodiment, the materials for the fixture assembly can be made of an insulator material during pre-heating process.
[0033] Figure 5 illustrates a top view of fully assembled fixture assembly, according to an embodiment. According to an embodiment, Figure 6 illustrates an exploded view of fixture assembly. According to an embodiment, heating coils are placed inside the box like structure for preheating. In another embodiment, heating coils are supplied with AC or DC power to heat for preheating. Heating coils heats the copper base plate 201 and in turn heats the work piece 401, which can be kept over the copper base plate 201.
[0034] According to an embodiment, the work piece 401 can be adjusted and centered by means of adjusting mechanism consists of adjusting screw 303 and adjusting screw fixing plate 105.
[0035] According to an embodiment, figure 5 illustrates a top view of fully assembled fixture assembly. Figure 6 illustrates an exploded view of fixture assembly, according to an embodiment. In an embodiment, the work piece can be adjusted and centered by means of mechanism. Similarly it can be clamped by means of clamping mechanism consists of clamping pads 104, clamping screws 304 and supporting pads 302 provided in the main body as shown in the figure.
[0036] The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the embodiments as described herein.