FIELD
The present disclosure relates to the field of pressing tools for pressing a bearing
cup in an axle hub.
BACKGROUND
Typically, a bearing cup is fitted in an axle 5 hub of a vehicle by pressing the
bearing cup in the axle hub. The bearing cup has a hollow tapered configuration
defined by a first edge and a second edge. The first edge has a smaller diameter
than the second edge. The bearing cup is pressed in the axle hub such that the first
edge of the bearing cup is received in the axle hub. Conventionally, a pressing
10 tool is used to fit the bearing cup in the axle hub. A conventional pressing tool has
a flat cylindrical head that is pressed against the second edge of the bearing cup to
securely fit the bearing cup in the axle hub. The flat cylindrical head has a
diameter complementary to the diameter of the first edge of the bearing cup.
However, during the fitment, orientation of the bearing cup may get altered. There
15 is a strong possibility that an operator presses the first edge instead of second edge
of the bearing cup. This results in erroneous mounting of the bearing cup in the
axle hub as the orientation of the bearing cup is inappropriate. The erroneous
mounting of the bearing cup generates line cracks in axle hubs, which results in
rejection of the axle hubs in quality check process. Frequent rejection reduces
20 overall productivity of a manufacturing line.
Therefore, there is felt a need of a bearing cup pressing tool that alleviates the
abovementioned drawbacks of the conventional tools.
OBJECTS
Some of the objects of the present disclosure, which at least one embodiment
25 herein satisfies, are as follows:
3
An object of the present disclosure is to provide a bearing cup pressing tool that
prevents erroneous mounting of a bearing cup on an axle hub.
Another object of the present disclosure is to provide a bearing cup pressing tool
that has a simple configuration.
Other objects and advantages of the present 5 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 bearing cup pressing tool. The tool comprises a
10 stem and a tapered head. The tapered head is configured to be received in a
bearing cup when the bearing cup is in a specific orientation. Thus, erroneous
mounting of the bearing cup on an axle hub of a vehicle is prevented.
The bearing cup has tapered cylindrical configuration defined by a first edge, a
second edge, and a wall surface between the first edge and the second edge. The
15 diameter of the first edge is smaller than the diameter of the second edge. In the
specific orientation, the second edge faces the tapered head of the tool.
The tool comprises a collar configured between the stem and the tapered head.
In an embodiment, the tapered head has a circular cross-sectional shape. The
diameter of a distal end of the tapered head is smaller than the diameter of a
20 proximal end of the tapered head.
In another embodiment, a recess is configured on the tapered head that extends
upto the stem.
In another embodiment, the stem has a cylindrical shape.
In yet another embodiment, each of the stem and the tapered head has chamfered
25 edges.
4
In yet another embodiment, a knurling pattern is configured circumferentially on
the stem.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWING
A bearing cup pressing tool, of the present disclosure, will now be described with
5 the help of the accompanying drawing, in which:
Figure 1 illustrates an isometric view of a bearing cup pressing tool, in accordance
with an embodiment of the present disclosure;
Figure 2 illustrates a front view of the bearing cup pressing tool of figure 1;
Figure 3 illustrates a top view of the bearing cup pressing tool of figure 1;
10 Figure 4 illustrates a bottom view of the bearing cup pressing tool of figure 1; and
Figure 5 illustrates a sectional view of the bearing cup pressing tool of figure 1.
LIST OF REFERENCE NUMERALS
100 – Bearing cup pressing tool
105 – Stem
15 107, 113, 122 – Chamfered edges
110 – Head
112 – Distal end of the head
114 – Proximal end of the head
115 – Collar
20 120 – Recess
5
DETAILED DESCRIPTION
The present disclosure envisages a bearing cup pressing tool that prevents
erroneous mounting of a bearing cup on an axle hub of a vehicle.
The bearing cup pressing tool (hereinafter also referred to as pressing tool) of the
present disclosure is now described with reference 5 to figure 1 through figure 6.
Figure 1 illustrates an isometric view of a pressing tool 100, in accordance with an
embodiment of the present disclosure. Figure 2 illustrates a front view of the
pressing tool 100. Figure 3 illustrates a top view of the pressing tool 100. Figure 4
illustrates a bottom view of the pressing tool 100. Figure 5 illustrates a sectional
10 view of the pressing tool 100.
The pressing tool 100 comprises a stem 105 and a tapered head 110. The stem 105
is pressed using a pressing machine to insert the tapered head 110 into a bearing
cup. The stem 105 can have any suitable shape. In an embodiment, the stem 105
has a cylindrical shape. Further, the stem 105 has a chamfered edge 107. The edge
15 107 is chamfered at an angle of 45º. The chamfered edge 107 protects an operator
from injuries causing due to sharp edges.
In an embodiment, a knurling pattern is configured circumferentially on the stem
105 to facilitate handling of the tool 100. The knurling pattern provides firm grip
while handling the tool 100. In an embodiment, the knurling pattern is a diamond
20 knurling pattern.
The tapered head 110 is configured to be received in the bearing cup (not shown
in figures) when the bearing cup is in a specific orientation. The bearing cup has a
tapered cylindrical configuration defined by a first edge, a second edge and a wall
surface between the first edge and the second edge. The diameter of the first edge
25 is smaller than the diameter of the second edge. More specifically, the bearing cup
has increasing taper from the first edge to the second edge. In the specific
orientation, the second edge of the bearing cup faces the tapered head 110 of the
6
pressing tool 100, whereas the first edge faces the axle hub in which the bearing
cup is to be fitted.
The bearing cup is introduced in the axle hub from its first edge. Introduction of
the bearing cup from the second edge, i.e., from the edge with larger diameter,
results in generation of cracks in the axle 5 hub and subsequent rejection of the axle
hub in quality check process.
The tapered head 110 is so configured that it can only be inserted in the bearing
cup from the second edge side, i.e., the edge with larger diameter, of the bearing
cup. The tapered head 110, and hence the pressing tool 100, can not be received in
10 the bearing cup from the first edge side, i.e., the edge with smaller diameter, of the
bearing cup. This prevents erroneous mounting of the bearing cup on the axle hub.
The tapered head 110 has a shape complementary to the bearing cup to facilitate
reception of the tapered head 110 in the bearing cup. In an embodiment, the
tapered head 110 has a circular cross-sectional shape. Further, the diameter of a
15 distal end 112 of the tapered head 110 is smaller than the diameter of a proximal
end 114 of the tapered head. More specifically, the shape and size of the distal end
of the tapered head 110 is complementary to the first edge of the bearing cup,
whereas the shape and size of the proximal end 114 of the tapered head is
complementary to the second edge of the bearing cup.
20 In an embodiment, the tapered head 110 extends from the stem 105 of the
pressing tool 100. In another embodiment, the pressing tool 100 comprises a
collar 115 configured between the stem 105 and the tapered head 110. The collar
115 limits the progress of the pressing tool 100 in the bearing cup.
In another embodiment, a recess 120 is configured on the tapered head 110. The
25 recess 120 extends to the stem 105. The formation of the recess 120 reduces the
amount of material required to manufacture the pressing tool 100. Further, the
formation of the recess 120 reduces the overall weight of the pressing tool 100.
7
The tapered head 110 has chamfered edges 113, 122. More specifically, an inner
edge 122 formed due to the recess 120 at the distal end 112 of the tapered head
110 is chamfered. Further, the outer edge 113 of the distal end 112 is chamfered.
In an embodiment, the edges 113, 122 are chamfered at an angle of 45º. The
chamfered edge 113 of the distal end 112 facilitates 5 easy insertion of the tool 100
in the bearing cup.
To mount the bearing cup on the axle hub, the bearing cup is placed on the axle
hub such that the first edge of the bearing cup faces the axle hub and the second
edge of the bearing cup faces the tapered head 110 of the pressing tool 100. The
10 pressing tool 100 is then inserted in the bearing cup. Further, the pressing tool 100
is pressed using the pressing machine such that the bearing cup is fitted in the axle
hub. More specifically, a chuck of the pressing machine presses the pressing tool
100. The pressing tool 100 is removed from the bearing cup once the bearing cup
is securely fitted in the axle hub.
15 The pressing tool 100 is not attached to the pressing machine. Instead, the
pressing machine is used to press the pressing tool 100. This arrangement
facilitates use of the pressing machine for operations other than the
aforementioned pressing operation.
The tool, of the present disclosure has a simple configuration. Further, the tool
20 prevents erroneous mounting of a bearing cup on an axle hub as the configuration
of the tool allows pressing of the bearing cup only when the bearing cup is in a
specific orientation.
TECHNICAL ADVANCEMENTS
The present disclosure described herein above has several technical advantages
25 including, but not limited to, the realization of a bearing cup pressing tool that:
 prevents erroneous mounting of a bearing cup on an axle hub; and
 has a simple configuration.
8
The foregoing disclosure has been described with reference to the accompanying
embodiments which do not limit the scope and ambit of the disclosure. The
description provided is purely by way of example and illustration.
The embodiments herein and the various features and advantageous details thereof
are explained with reference 5 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
10 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 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
15 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
20 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
25 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.
9
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 5 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.
10 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.
15 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
20 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.

WE CLAIM
1. A bearing cup pressing tool (100), said tool (100) comprising:
a stem (105); and
a tapered head (110) configured to be received in a bearing cup
when said bearing cup 5 is in a specific orientation, thereby
preventing erroneous mounting of said bearing cup on an axle hub
of a vehicle.
2. The bearing cup pressing tool (100) as claimed in claim 1, wherein said
bearing cup has tapered cylindrical configuration defined by a first edge, a
10 second edge, and a wall surface between said first edge and said second
edge, the diameter of said first edge being smaller than the diameter of
said second edge, wherein in said specific orientation, said second edge
faces said tapered head (110) of said tool (100).
3. The bearing cup pressing tool (100) as claimed in claim 1, wherein said
15 tool (100) comprises a collar (115) configured between said stem (105)
and said tapered head (110).
4. The bearing cup pressing tool (100) as claimed in claim 1, wherein said
tapered head (110) has a circular cross-sectional shape.
5. The bearing cup pressing tool (100) as claimed in claim 4, wherein the
20 diameter of a distal end (112) of said tapered head (110) is smaller than the
diameter of a proximal end (114) of said tapered head (110).
6. The bearing cup pressing tool (100) as claimed in claim 1, wherein a
recess (120) is configured on said tapered head (110), and said recess
(120) extends to said stem (105).
25 7. The bearing cup pressing tool (100) as claimed in claim 1, wherein said
stem (105) has a cylindrical shape.
11
8. The bearing cup pressing tool (100) as claimed in claim 1, wherein each of
said stem (105) and said tapered head (110) has chamfered edges (107,
113, 122).
9. The bearing cup pressing tool (100) as claimed in claim 8, wherein said
chamfered edges (107, 1 5 13, 122) are chamfered at an angle of 45º.
10. The bearing cup pressing tool (100) as claimed in claim 1, wherein a
knurling pattern is configured circumferentially on said stem (105).