, Description: A DEVICE FOR SETTING AND MACHINING OF A DRUM NIPPLE

TECHNICAL FIELD
[0001] The present subject matter described herein relates to a drum nipple present in the boiler circuit. More specifically, the present invention relates to the device for setting and machining of drum nipple in the boiler circuit during edge preparation machining on a center lathe.

BACKGROUND
[0002] Drum nipples are the fittings used in boiler drums in the boiler circuit. It is used to carry the hot water or steam according to the need of the various areas. It is an important pressure part component in which the pressure and temperature act, they vary according to the line. The Nipple manufacturing needs a number of processes. First select the suitable raw material. Then the raw material is moved move to band saw cutting machine to cut the raw material in required length.
[0003] Where the lathe machine is engaged in to edge prepare machining, there are a lot of steps which require the part/component to be pressured manually. Many male and female operators are engaged in regular production in this lathe machine. After a ban regarding the maual placement of the part (due to the dangers relating to bodily damage), the saw cutting drum nipples raw materials are move to L50 Centre lathe machine for edge preparation machining purpose. For better rigid setting purpose, we are using four jaw chuck for machining of drum nipples in lathe machine.
[0004] In the conventional state of art, the job setting Stopper plate is provided to support the four jaw chuck for require length machining. Then Job is held on the four jaw chuck. In this prior art, the truing and setting process is done by using surface gauge. After truing process all the four jaw are tightened for better rigid setting while machining, then first side machining process is started. After the first side maching is finished, the job is unloaded from the four jaw chuck by the help of chuck key.
[0005] As per the prior art, a second side machining is done on the drum nipple. So again the job is held on the four jaw chuck for second side machining. On this second an outer surface truing process is also required for proper machining. The job unloading after 1st side machining and second side setting process need more human activity and physical effort; this continue process make more operator fatigue.
[0006] The Job outer surface truing process need two times like the first and second side setting. It usually takes 20 minutes per job on both the sides. Approximately per year the operator need to bend his body position for (20 x 2400 jobs) 48000 minutes while performing the truing process (as shown in fig-2). The clamping and de clamping process needs at least 8 times human effort for first side and second side. So per year, the operator needs (8x2400) 19200 times setting activates in both hand.
[0007] It makes more operator fatigue like and causes hand joint pain, shoulder pain, body back pain, waist pain and spinal guard pain to the both men and women operator and spoils the operators health and it makes the operator absent in work and also reduces his/her efficiency.
[0008] It is therby required to reduce the operator fatigue by incorporating the job/part/component clamping and de-clamping in four jaw chuck while loading and unloading.
OBJECTS OF THE DISCLOSURE
[0009] It is therefore the object of the present disclosure to overcome the aforementioned and other drawbacks in prior method/product/apparatus.
[0010] It is a primary object of the present disclosure is to reduce the operator fatigue while job clamping and de clamping in four jaw chuck while job loading and unloading.
[0011] It is another object of the present disclosure to reduce human activities for the outer surface truing process for first and second side job setting.
[0012] It is another object of the present disclosure to reduce cycle time for Drum nipple machining and setting process.
[0013] Yet another object of the present disclosure is to increase the productivity of Drum nipples.
[0014] These and other objects and advantages of the present subject matter will be apparent to a person skilled in the art after consideration of the following detailed description taken into consideration with accompanying drawings in which preferred embodiments of the present subject matter are illustrated.

SUMMARY
[0015] Solution to one or more drawbacks of existing technology and additional advantages are provided through the present disclosure. Additional features and advantages are realized through the technicalities of the present disclosure. Other embodiments and aspects of the disclosure are described in detail herein and are considered to be a part of the claimed disclosure.
[0016] The present disclosure offers a solution in the form of a device for setting and machining of a drum nipple during edge preparation machining on center lathe. It comprises of a base plate held by a four jaw chuck, at least a collar ring guide block welded on the base plate and a collar ring fitted between the collar ring guide block with at least a center pin wherein the collar ring is locked with the means of at least a collar screw wherein at least an align key bolt is provided on the collar ring to hold the drum nipple while machining.
[0017] In an aspect of the invention, the collar ring holds the drum nipple at the self-center to the lathe machine while machining.
[0018] In an aspect of the invention, the center pin rotates the collar ring at 360° between the collar ring guide block.
[0019] In an another aspect of the invention, the collar screw locks the collar ring with the collar ring guide block at 180°.
[0020] In an another aspect of the invention, the collar ring guide block is two in number.
[0021] In an aspect of the invention, the center pin is two in number.
[0022] In an another aspect of the invention, the collar lock screw is two in number.
[0023] In an another aspect of the invention, the align key bolt is three in number.
[0024] The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features will become apparent by reference to the drawings and the following detailed description.

BRIEF DESCRIPTION OF THE DRAWINGS
[0025] It is to be noted, however, that the appended drawings illustrate only typical embodiments of the present subject matter and are therefore not to be considered for limiting of its scope, for the present disclosure may admit to other equally effective embodiments. The detailed description is described with reference to the accompanying figures. In the figures, a reference number identifies the figure in which the reference number first appears. The same numbers are used throughout the figures to reference like features and components. Some embodiments of system or methods or structure in accordance with embodiments of the present subject matter are now described, by way of example, and with reference to the accompanying figures, in which:
[0026] Fig. 1 illustrates the boiler fitting component Drum nipples;
[0027] Fig. 2 illustrates the boiler fitting outer surface truing process on four jaw chuck with the help of surface gauge;
[0028] Fig. 3 illustrates an isometric view of the present disclosure fixed on four jaw chuck;
[0029] Fig. 4 illustrates a top view of the present disclosure fixed on four jaw chuck;
[0030] Fig. 5 illustrates a side view of the present disclosure fixed on four jaw chuck;
[0031] Fig. 6 illustrates the boiler fitting holding on the device in the present disclosure for first side machining;
[0032] Fig. 7 illustrates the boiler fitting tilting and second side machining process using the device in the present disclosure.
[0033] The figures depict embodiments of the present subject matter for illustration only. A person skilled in the art will easily 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
[0034] While the embodiments of the disclosure are subject to various modifications and alternative forms, a specific embodiment thereof has been shown by way of example in the figures and will be described below. It should be understood, however, that it is not intended to limit the disclosure to the particular forms disclosed, but on the contrary, the disclosure is to cover all modifications, equivalents, and alternatives falling within the scope of the disclosure.
[0035] The terms “comprises”, “comprising”, or any other variations thereof used in the disclosure, are intended to cover a non-exclusive inclusion, such that a device, system, assembly that comprises a list of components does not include only those components but may include other components not expressly listed or inherent to such system, or assembly, or device. In other words, one or more elements in a system or device proceeded by “comprises… a” does not, without more constraints, preclude the existence of other elements or additional elements in the system or device.
[0036] Referring to Fig. 5, the present invention relates to a device for setting and machining of a drum nipple (101) during edge preparation machining on center lathe. The device comprises of a base plate (102) welded with at least a Collar ring guide block (103). The collar ring guide block (103) is two in number.
[0037] Referring to Fig. 3 and Fig. 4, a Collar ring (104) is fitted between the collar ring guide blocks (103) with help of a center pin (105). There are two center pins located on each of the collar ring guide block (103). The center pin (105) is used to rotate the collar ring (104) in 360 degrees between the collar ring guide blocks (103).
[0038] The Collar lock screw (106) locks the collar ring (104) with collar ring guide blocks (103) at 180 degrees. The collar lock screw (106) is also two in number and is located on each of the collar ring guide block (103). At least an Align key bolt (107) is provided on Collar ring (104). The align key bolt (107) are three and are located withthin equal distance of the device for holding purpose.
[0039] In the present invention, Referring to FIG.6, the device is fixed on four jaw chuck. For the first side machining, the collar ring (104) is locked with the collar ring guide blocks (103) at 180 degree position by using the collar lock screw (106). After that the drum nipple (101) is inserted to collar ring (104) at the required length. The drum nipple (101) is then clamped by Align key bolts (107) onto the collar ring (104).
[0040] After that, the drum nipple (101) gets itself self centered to the lathe machine on the center axis while job setting. Now first side edge prepare machining is done on the drum nipple (101).
[0041] After completion of the first side machining, the collar lock screw (106) are loosened (Fig-7) and then the collar ring (104) with the drum nipple (101) is tilted to 180 degrees (Fig-7a, 7b, 7c, 7d) for second side edge preparation machining. After tilting to the exact position, the collar ring (104) is locked with collar ring guide block (103) by using Collar lock screws (106). After completion of second side machining, the drum nipple is de-clamped and unloaded from collar ring (104) by loosening the align screw bolts (107).
[0042] 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 disclosures 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. Also, 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 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 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.”
[0043] It will be further appreciated that functions or structures of a plurality of components or steps may be combined into a single component or step, or the functions or structures of one-step or component may be split among plural steps or components. The present disclosure contemplates all of these combinations. Unless stated otherwise, dimensions and geometries of the various structures depicted herein are not intended to be restrictive of the disclosure, and other dimensions or geometries are possible. Also, while a feature of the present disclosure may have been described in the context of only one of the illustrated embodiments, such feature may be combined with one or more other features of other embodiments, for any given application. It will also be appreciated from the above that the fabrication of the unique structures herein and the operation thereof also constitute methods in accordance with the present disclosure. The present disclosure also encompasses intermediate and end products resulting from the practice of the methods herein. The use of “comprising” or “including” also contemplates embodiments that “consist essentially of” or “consist of” the recited feature.

Claims:We claim:
1. A device for setting and machining of a drum nipple (101) on a center lathe. It comprises of:
a base plate (102) held by a four jaw chuck;
at least a collar ring guide block (103) welded on the base plate (102); and
a collar ring (104) fitted between the collar ring guide block (103) with at least a center pin (105);
wherein the collar ring (104) is locked with the means of at least a collar screw (106),
wherein at least an align key bolt (107) is provided on the collar ring (104) to hold the drum nipple (101) while machining.

2. The device for setting and machining of a drum nipple (101), wherein the collar ring (104) holds the drum nipple (101) at the self-center to the lathe machine while machining.

3. The device for setting and machining of a drum nipple (101), wherein the center pin (105) rotates the collar ring (104) at 360° between the collar ring guide block (103).

4. The device for setting and machining of a drum nipple (101), wherein the collar screw (106) locks the collar ring (104) with the collar ring guide block (103) at 180°.

5. The device for setting and machining of a drum nipple (101), wherein at least the collar ring guide block (103) is two in number.

6. The device for setting and machining of a drum nipple (101), wherein at least the center pin (105) is two in number.

7. The device for setting and machining of a drum nipple (101), wherein at least the collar lock screw (106) is two in number.

8. The device for setting and machining of a drum nipple (101), wherein at least the align key bolt (107) is three in number.