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Title:
DEBURRING TOOL HEAD
Document Type and Number:
WIPO Patent Application WO/2018/025173
Kind Code:
A1
Abstract:
The present disclosure relates to a deburring tool head. The deburring tool head of the present disclosure is of a generally conical configuration having at least one arcuate portion between two operative ends having an algebraic manifold, at least one flute on said arcuate portion having two cutting edges on the inner surface and outer surface of said arcuate portion. The deburring tool head of the present disclosure is also reversibly usable for deburring the inner diameter as well as the outer diameter of a workpiece.

Inventors:
PURAV, Chetan Prabhakar (502 Sunrise Apartment, 10 Pitamber Lane, Mahim Mumbai, Maharashtra 6, 400016, IN)
Application Number:
IB2017/054690
Publication Date:
February 08, 2018
Filing Date:
August 01, 2017
Export Citation:
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Assignee:
PURAV, Chetan Prabhakar (502 Sunrise Apartment, 10 Pitamber Lane, Mahim Mumbai, Maharashtra 6, 400016, IN)
International Classes:
B23D79/02; B23B5/16; B24B9/00
Domestic Patent References:
2014-12-04
2015-08-27
Foreign References:
DE3517147A11986-11-13
Attorney, Agent or Firm:
DEWAN, Mohan (R. K. Dewan & Co. Podar Chambers, S. A. Brelvi Road Fort, Mumbai-, Maharashtra 1, 400001, IN)
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Claims:
A deburring tool head for removing burr from an internal diameter as well as an external diameter of a workpiece, said deburring tool head having generally conical configuration defined operatively between a first operative end and a second operative end thereof, said deburring tool head having: at least one arcuate portion extending from said first operative end upto said second operative end, having an algebraic manifold that is configured to provide relief; and at least one flute configured on said at least one arcuate portion for allowing exit of burr during deburring operation; and two cutting edges defining said at least one flute, wherein one cutting edge is defined on an inner surface of said at least one arcuate portion, and another cutting edge is defined on an outer surface of said at least one arcuate portion, for facilitating cutting and easy removal of burrs from said inner and said outer diameters of said workpiece respectively.

The deburring tool head as claimed in claim 1, which includes a web portion configured at said first operative end.

The deburring tool head as claimed in claim 2, wherein an aperture is configured on said web portion to facilitate mounting of said deburring tool head on a shank.

The deburring tool head as claimed in claim 1, wherein an apex angle of said deburring tool head ranges from 10° to 170°.

The deburring tool head as claimed in claim 1, wherein said at least one cutting edge is provided with a flute angle ranging from 0° to 90°.

The deburring tool head as claimed in claim 1, wherein said deburring tool head is made of at least one material selected from a group consisting of high speed steel, alloy steel, tungsten carbide, and ceramic duly heat treated.

Description:
DEBURRING TOOL HEAD

FIELD

The present disclosure relates to the field of mechanical engineering. In particular, the present disclosure relates to the field of manufacturing tools. BACKGROUND

Burr is a rough edge or ridge formed on an object, especially of metal, by the action of machining operations such as milling, drilling, grinding, cutting, and the like. These burrs not only affect the aesthetics of the object but can also inflict injuries if the object is handled carelessly. Furthermore, the presence of burrs can also result in an increased wear on the parts involved in a particular operation, thereby leading to frequent replacement or even preventing the parts from working as intended. As such, it is necessary to remove these burrs, and the process by which the burrs are removed is known as deburring. Deburring is generally done manually by the use of tools like a file, a grinding disk, a grinding stone, a grinding tool, sand paper, and the like, which can be used to file down the burrs. However, manual deburring is often time consuming and labor intensive.

Other types of deburring processes include sanding, wire brushing, abrasive flow machining, electrochemical deburring, and electro-polishing. However, these processes are cost intensive and often require specialized setups.

Hence, in order to overcome the aforementioned drawbacks, there is need of a deburring tool head which is cost-friendly and can be used efficiently for manual deburring as well as mechanized deburring.

OBJECTS

Some of the objects of the present disclosure, which at least one embodiment herein satisfies, are as follows. It is an object of the present disclosure to ameliorate one or more problems of the prior art or to at least provide a useful alternative. An object of the present invention is to provide a deburring tool head which facilitates economizing the deburring process.

Another object of the present invention is to provide a deburring tool head which is easy to use in manual as well as mechanized deburring processes. Yet another object of the present disclosure is to provide a deburring tool head which can be used for the deburring of an internal diameter as well as an external diameter of a workpiece.

Other objects and advantages of the present disclosure will be more apparent from the following description, which is not intended to limit the scope of the present disclosure.

SUMMARY The present disclosure envisages a deburring tool head for removing burr from an internal diameter as well as an external diameter of a workpiece. The deburring tool head of the present disclosure has a generally conical configuration defined operatively between a first operative end and a second operative end thereof. The deburring tool head has at least one arcuate portion extending from the first operative end upto the second operative end. The arcuate portion has an algebraic manifold that is configured to provide relief. At least one flute is configured on the at least one arcuate portion for allowing exit of burr during the deburring operation. The deburring tool head further includes two cutting edges which define the at least one flute. One cutting edge is defined on an inner surface of the at least one arcuate portion and another cutting edge is defined on an outer surface of the at least one arcuate portion, for facilitating cutting and easy removal of burrs from the inner and the outer diameters of the workpiece respectively.

In an embodiment, the deburring tool head includes a web portion configured at the first operative end thereof. An aperture is configured on the web portion to facilitate the mounting of the deburring tool head on a shank. In another embodiment, an apex angle (A) of the deburring tool head ranges from 10° to 170°.

In another embodiment, the cutting edges are provided with a flute angle ranging from 0° to 90°. The deburring tool head is made of at least one material selected from a group consisting of high speed steel, alloy steel, tungsten carbide, and ceramic duly heat treated.

BRIEF DESCRIPTION OF ACCOMPANYING DRAWING

A deburring tool head of the present disclosure will now be described with the help of the non-limiting accompanying drawing, in which:

Fig. 1A and Fig. IB illustrate isometric views of the deburring tool head, in accordance with an embodiment of the present disclosure;

Fig. 2 illustrates a top view of the deburring tool head of Fig. 1 A; and

Fig. 3 illustrates a sectional view of the deburring tool head of Fig. 2. DETAILED DESCRIPTION

When machining operations are performed on a workpiece, burr is generally formed on the edges of the workpiece. These burrs affect the aesthetics of the workpiece and can also inflict injuries to a human operator if the workpiece is handled carelessly. Also, the presence of burrs can also result in an increased wear on the parts involved in a particular operation, thereby leading to frequent replacement or even preventing the parts from working as intended. Therefore, it is necessary to remove these burrs from the workpiece, and the process by which the burrs are removed is known as deburring. Deburring is generally done manually by the use of tools like a file, a grinding disk, a grinding stone, a grinding tool, sand paper, and the like which can be used to file down the burrs. However, manual deburring is often time consuming and labor intensive.

Other types of deburring processes include sanding, wire brushing, abrasive flow machining, electrochemical deburring, and electro-polishing. However, these processes are cost intensive and often require specialized setups.

In order to overcome the aforementioned drawbacks associated with the conventional deburring methods, the present disclosure envisages a deburring tool head that can be mounted on a shank of a conventional hand-held tool or a shank of a conventional manufacturing machine. As such, the deburring operation can be performed by using the deburring tool head of the present disclosure along with the conventional equipment without requiring specialized setups. Thus, the deburring tool head, as envisaged in the present disclosure, also facilitates the economizing of the deburring process.

Referring to Fig. 1A through Fig. 3, the deburring tool head 100 has a generally conical configuration that is defined operatively between a first operative end 102 A and a second operative end 102B thereof. The deburring tool head 100 has at least one arcuate portion 104A, 104B that extends from the first operative end 102A upto the second operative end 102B. The arcuate portion 104A, 104B has an algebraic manifold that is configured to provide relief. At least one flute 106A, 106B is configured on the arcuate portions 104A, 104B to facilitate cutting and easy removal of burrs from the workpiece. The deburring tool head 100 can be mounted on cap/holder which can be connected to the shank of a hand held tool or a machine. More specifically, the cap/holder can hold the deburring tool head 100 at the second operative end 102B which has the larger diameter, and then the cap/holder can be mounted on to the shank of the hand held tool or the machine.

In another embodiment, as shown in Fig. 1A and Fig. 2, the deburring tool head 100 has a web portion 108 defined at the first operative end 102A. An aperture 110 is configured on the web portion 108 (see Fig. 2) to facilitate the mounting of the deburring tool head 100 on a shank (not shown in figures). In this particular embodiment, the deburring tool head 100 includes at least two arcuate portions 104A, 104B that extend from the web portion 108 having the algebraic manifolds configured so as to provide relief. The flutes 106 A, 106B are slot-like formations on the deburring tool head 100 that perform the shearing, cutting, and removal of the burr from the work piece. The flutes 106A, 106B are configured operatively between the two arcuate portions 104A, 104B. As such, the flutes 106A, 106B is defined by the two edges which form the ends of the arcuate portions 104A, 104B. The arcuate portions 104A, 104B have an outer surface 104A1, 104B 1 and an inner surface 104A2, 104B2 respectively. Each flute 106A, 106B is provided with two cutting edges wherein one of the cutting edges is configured on the inner surface of the arcuate portion and another cutting edge is provided on the outer surface of the arcuate portion. More specifically, the flutes 106A, 106B are provided with a cutting edge 112A defined on the inner surfaces 104A2, 104B2 of the arcuate portions 104A, 104B. Another cutting edge 112B is defined on the outer surfaces 104A1, 104B1 of the two arcuate portions 104A, 104B. As such, each of the arcuate portions 104A, 104B is provided with one cutting edge 112A configured on the inner surface 104A2, 104B2 at one end thereof, and one cutting edge 112B configured on the outer surface 104A1, 104B 1 at the other end of the arcuate portion 104A, 104B. Each of the cutting edges 112A, 112B is provided with a flute angle F° that ranges from 0° to 90°.

Although the deburring tool head 100 of the present disclosure is shown to have two arcuate portions 104A, 104B. The number of the arcuate portions is not restricted to two. The deburring tool head can have more than two flutes as well. The number of the flutes is equal to the number of the arcuate portions. Furthermore, each of the arcuate portions is provided with two cutting edges. As such, the number of the cutting edges 112A, 112B on the deburring tool head 100 will be twice the number of flutes 106A, 106B. The algebraic manifolds of the at least two arcuate portions 104A, 104B are configured so as to provide relief and facilitate easy removal of the sheared burr during the deburring operation. It is the configuration of the algebraic manifolds of the arcuate portions 104A, 104B which provides a gap to the sheared burr for removal therefrom. The configuration of the flute angles provided to the flutes 106A, 106B also facilitates the easy removal of the burr. Stress concentration occurs at the cutting edges 112A, 112B at the time of deburring, and the surfaces 104A1, 104A2, 104B1, 104B2 of the arcuate portions 104A, 104B act as relief surfaces.

In an embodiment, an apex angle A" of the deburring tool head 100 ranges from 10° to 170°. In another embodiment, the deburring tool head is made of at least one material selected from a group consisting of high speed steel, alloy steel, tungsten carbide, and ceramic duly heat treated.

The deburring tool head 100 as disclosed in the present disclosure can be used to perform deburring operation on a cylindrical workpiece or on a hole depending upon the orientation of the deburring tool head 100. The cylindrical workpiece is placed inside the deburring tool head 100 such that the cutting edges 112A of the flutes 106A, 106B configured on the inner surfaces 104A2, 104B2 of the arcuate portions 104A, 104B are in contact with the outer edge of the cylindrical workpiece. Subsequent to the achieving of the contact, the deburring tool head 100 is rotated and advanced, thereby performing the deburring operation on the cylindrical workpiece. In case of performing the deburring operation on the hole, the deburring tool head 100 is inserted in the hole such that the cutting edges 112B of the flutes 106A, 106B configured on the outer surface 104A1, 104B 1 of the arcuate portions 104A, 104B are in contact with the inner edge of the hole. Subsequent to the achieving of the contact, the deburring tool head 100 is rotated and advanced, thereby performing the deburring operation on the hole of the workpiece.

TECHNICAL ADVANCES

The present disclosure described herein above has several technical advantages including, but not limited to, the realization of a deburring tool head which:

• is reversibly usable for deburring of inner diameter as well as the outer diameter of a workpiece;

• facilitates economizing the deburring process;

• is easy to use in manual as well as mechanized deburring processes; and

• is quick and easy for mounting and dismounting.

The embodiments herein and the various features and advantageous details thereof are explained with reference to the non-limiting embodiments 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.

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.

Throughout this specification the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element, integer or step, or group of elements, integers or steps, but not the exclusion of any other element, integer or step, or group of elements, integers or steps.

The use of the expression "at least" or "at least one" suggests the use of one or more elements or ingredients or quantities, as the use may be in the embodiment of the disclosure to achieve one or more of the desired objects or results. Any discussion of documents, acts, materials, devices, articles or the like that has been included in this specification is solely for the purpose of providing a context for the disclosure. It is not to be taken as an admission that any or all of these matters form a part of the prior art base or were common general knowledge in the field relevant to the disclosure as it existed anywhere before the priority date of this application. The numerical values mentioned for the various physical parameters, dimensions or quantities are only approximations and it is envisaged that the values higher/lower than the numerical values assigned to the parameters, dimensions or quantities fall within the scope of the disclosure, unless there is a statement in the specification specific to the contrary.

While considerable emphasis has been placed herein on the components and component parts of the preferred embodiments, it will be appreciated that many embodiments can be made and that many changes can be made in the preferred embodiments without departing from the principles of the disclosure. These and other changes in the preferred embodiment as well as other embodiments of the disclosure will be apparent to those skilled in the art from the disclosure herein, whereby it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the disclosure and not as a limitation.