DESC:A TOOL ARRANGEMENT FOR MEASURING BACKLASH IN BEVEL GEAR ARRANGEMENT AND METHOD OF MEASUREMENT THEREOF

TECHNICAL FIELD
[0001] The present disclosure, in general, relates to a measurement of backlash in bevel gear arrangement. The present disclosure, particularly, relates to a tool arrangement for measuring backlash in bevel gear arrangement and method of measurement thereof.

BACKGROUND
[0002] Background description includes information that may be useful in understanding the present invention.
[0003] Bevel gears are used to transmit rotational motion between intersecting shafts. Bevel gears are designed to mesh with one another at an angle. The angled configuration allows the bevel gears to change the direction of rotation and transmit motion between shafts that are not parallel.
[0004] Bevel gears are commonly used in various mechanical devices including but not limited to automobiles, agricultural vehicles, industrial machinery, household appliances. Bevel gears are often employed in applications where a change in the direction of rotation or torque is required, such as in differential mechanisms in vehicles or in power tools where space constraints demand a compact gear arrangement.
[0005] The working of bevel gear arrangement depends on the engagement or meshing of the gears with each other. Backlash is a common problem associated with meshing of bevel gears. Backlash is the clearance between the teeth of mating gears. Backlash between the gears could occur due to manufacturing tolerances or during assembly and installation. The backlash between the teeth of the bevel gears create many problems. The sudden impact or engagement of gear teeth due to backlash can generate vibrations that propagate through the mechanical system, leading to increased noise levels and potential discomfort or damage. Further excessive backlash can accelerate wear and fatigue of the gear teeth. The repeated impact and loading during gear engagement can cause premature wear, leading to reduced lifespan and increased maintenance requirements.
[0006] Referring to Figure 1a, 1b and 1c illustrating the meshing of teeth of the bevel gears in the existing art. In the embodiment, the bevel gears are shown perpendicular to each other and the teeth of the bevel gears are meshed with each other. Figure 1a depicts negative backlash, indicating insufficient meshing between the teeth of the bevel gears. Conversely, Figure 1b illustrates positive backlash, characterized by excessive meshing between the teeth of the bevel gears. For proper working of the bevel gears, the meshing must be optimum. This optimum meshing is shown in Figure 1c.
[0007] Since the meshed teeth of the bevel gears is obscured inside the housing of the bevel gear arrangement, it is very difficult to determine the exact backlash between the teeth of the bevel gears. Many techniques are used in the art to determine the backlash. Measuring backlash in bevel gears using paint involves a technique called the "paint method." This method uses paint or a similar marking substance to visually identify the contact pattern and measure the amount of backlash between gear teeth. By using paint or a marking substance to visualize the contact pattern and measure backlash, engineers and technicians can effectively assess gear performance, identify potential issues, and make informed adjustments to improve gear functionality and longevity.
[0008] The accuracy of paint-based measurements may not be as precise as using dedicated metrology tools such as gear measurement machines or laser-based techniques. Factors such as paint thickness, application consistency, and human error can introduce inaccuracies in the backlash measurement results.
[0009] Measurement of backlash by gear measurement machines or laser-based techniques are more accurate than the paint method. However, while measuring the backlash between the bevel gears, it is to be ensured that movement of one of the bevel gears is completely restricted for better accuracy.
[0010] Accordingly, there is a need for a tool arrangement for measuring a backlash in a bevel gear arrangement and a method of measurement which is capable of accurately measure the backlash by restricting movement of one of the bevel gears.
OBJECTIVES OF THE INVENTION:
[0011] The objectives are provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. These objectives are not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
[0012] At least an objective of the present subject matter is to propose a tool arrangement for accurately measuring a backlash in a bevel gear arrangement.
[0013] Yet another objective of the present subject matter is to propose a method performed by tool arrangement for measuring backlash in a bevel gear arrangement.
[0014] Yet another objective of the present subject matter is to propose a tool arrangement which is easier to use and which is capable of determining the backlash with accuracy.
[0015] These and other objects and advantages will become more apparent when reference is made to the following description and accompanying drawings.

SUMMARY
[0016] This summary is provided to introduce concepts related to a tool arrangement for accurately measuring a backlash in a bevel gear arrangement and a method of measurement thereof. The concepts are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.
[0017] The present subject matter relates to a tool arrangement for measuring a backlash in a bevel gear arrangement having a first bevel gear in engagement with a second bevel gear positioned in a housing. The tool arrangement comprises a locking tool, a rotational tool, and a measuring tool. The locking tool is provided for locking the first bevel gear with the housing to restrict the rotational movement of the first bevel gear. The rotational tool is engaged with a shaft of the second bevel gear and adapted to cause an attempt to rotate the second bevel gear. The measuring tool is positioned facing the rotational tool. The measuring tool is adapted to measure a backlash of the second bevel gear by attempting to manually rotate the second bevel gear by the rotational tool.
[0018] In an aspect, the housing is provided with a plurality of shaft holes to accommodate the first bevel gear and the second bevel gear and plurality of mounting holes to accommodate the locking tool.
[0019] In an aspect, the locking tool comprises a bar and a shaft. The bar has a hole in the middle. The bar has locking elements provided at each end. The shaft is fixedly attached to the bar through the hole. The shaft is adapted to engage with the first bevel gear to lock the first bevel gear in meshed position inside the housing to restrict movement during measurement of the backlash.
[0020] In an aspect, the locking elements on the bar of the locking tool are adapted to engage with the mounting holes on the housing during measurement of the backlash.
[0021] In an aspect, the first bevel gear and the second bevel gear are substantially perpendicular to each other in meshed position.
[0022] In an aspect, the first bevel gear has a pinion and a pinion carrier and the second bevel gear has a gear teeth with shaft and cover.
[0023] In an aspect, plurality of shims is provided between the shaft hole of the first bevel gear and pinion carrier of the first bevel gear to adjust backlash between the first bevel gear and the second bevel gear.
[0024] In an aspect, adjustment of the backlash between the first bevel gear and the second bevel gear is performed by changing the number of shims between the shaft hole of the first bevel gear and the pinion carrier of the first bevel gear.
[0025] In an aspect, the rotational tool comprises a cylindrical casing and a T-shaped rod. A cylindrical casing adapted to enclose the shaft of the second bevel gear. The cylindrical casing is detachably attached to the shaft of the second bevel gear. The T-shaped rod is adapted to engage with the cylindrical casing. The shaft of the second bevel gear is rotated by rotating the cylindrical casing by turning the T-shaped rod.
[0026] In an aspect, the backlash measuring device is a dial gauge.
[0027] The present subject matter further relates to a method performed by the tool arrangement for measuring backlash in a bevel gear arrangement having a first bevel gear in engagement with a second bevel gear positioned in a housing. The method comprises locking, by a locking tool, the first bevel gear with the housing, engaging a rotating tool with a shaft of the second bevel gear; positioning a measuring tool facing a rotating tool; and attempting to rotate, by the rotating tool, the second bevel gear; and measuring, by the measuring tool, the backlash of the second bevel gear.
[0028] In an aspect, the method further comprises increasing the number of shims provided between the first shaft hole and the pinion carrier of the first bevel gear when there is positive backlash.
[0029] In an aspect, the method further comprises decreasing the number of shims provided between the first shaft hole and the pinion carrier of the first bevel gear when there is negative backlash.
[0030] To further understand the characteristics and technical contents of the present subject matter, a description relating thereto will be made with reference to the accompanying drawings. However, the drawings are illustrative only but not used to limit the scope of the present subject matter.
[0031] Various objects, features, aspects, and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent like components.

BRIEF DESCRIPTION OF FIGURES
[0032] The illustrated embodiments of the present disclosure will be best understood by reference to the drawings, wherein like parts are designated by like numerals throughout. The following description is intended only by way of example, and simply illustrates certain selected embodiments of devices, systems, and processes that are consistent with the subject matter as claimed herein, wherein:
[0033] FIG. 1a, 1b and 1c illustrates the meshing of teeth of the bevel gears in the existing art;
[0034] FIG. 2a illustrates a tool arrangement for measuring backlash in a bevel gear arrangement in accordance with one of the embodiments of the present subject matter;
[0035] FIG. 2b illustrates a bevel gear arrangement in accordance with one of the embodiments of present subject matter;
[0036] FIG. 3a illustrates an exemplary housing of the bevel gear arrangement in accordance with an embodiment of the present subject matter;
[0037] FIG. 3b illustrates an exemplary first bevel gear in accordance with an embodiment of the present subject matter;
[0038] FIG. 3c illustrates an exemplary second bevel gear in accordance with an embodiment of the present subject matter;
[0039] FIG. 3d illustrates an exemplary shim in accordance with an embodiment of the present subject matter;
[0040] FIG. 4 illustrates an exemplary locking tool in accordance with an embodiment of the present subject matter;
[0041] FIG. 5 illustrates an exemplary rotational tool in accordance with an embodiment of the present subject matter; and
[0042] FIG. 6 illustrates a method performed by the tool arrangement for measuring backlash in a bevel gear arrangement in accordance with one of the embodiments of the present subject matter.
[0043] The figures depict embodiments of the present subject matter for the purposes of 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
[0044] A few aspects of the present disclosure are explained in detail below with reference to the various figures. Example implementations are described to illustrate the disclosed subject matter, not to limit its scope, which is defined by the claims. Those of ordinary skill in the art will recognize a number of equivalent variations of the various features provided in the description that follows.

EXEMPLARY IMPLEMENTATIONS
The following is a detailed description of embodiments of the disclosure depicted in the accompanying drawings. The embodiments are in such detail as to clearly communicate the disclosure. However, the amount of detail offered is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to panel all modifications, equivalents, and alternatives falling within the spirit and scope of the present disclosure as defined by the appended claims.
While the embodiments of the disclosure are subject to various modifications and alternative forms, specific embodiment thereof have 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 panel all modifications, equivalents, and alternative falling within the scope of the disclosure.
[0045] The terms “comprises”, “comprising”, or any other variations thereof used in the disclosure, are intended to panel 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
[0046] The present disclosure provides a tool arrangement for measuring backlash in bevel gear arrangement and method of measurement thereof.
[0047] FIG. 2a illustrates a tool arrangement for measuring backlash in a bevel gear arrangement and FIG. 2b illustrating a bevel gear arrangement in accordance with one of the embodiments of present subject matter. The tool arrangement 200 is provided on a bevel gear arrangement 201. The bevel gear arrangement 201 has a housing 201a, a first bevel gear 201b and a second bevel gear 201c. In an aspect, either one of the gears 201a, 201b is a driving gear and the other one is a driven gear. In other words, one of the gears input power to the bevel gear arrangement and the other gear output power to auxiliary machinery attached to the bevel gear arrangement 201.
[0048] Teeth 202, 203 of the first bevel gear 201a and the second bevel gear 201c engages together inside the housing 201a. Through this engagement, the power is transmitted from the driving bevel gear to the driven bevel gear. The first bevel gear 201b and the second bevel gear 201c are substantially perpendicular to each other in meshed position. Housing 201a is one of the main components of the bevel gear arrangement 201. The housing 201a is discussed in detail with reference to FIG. 3a.
[0049] The tool arrangement 200 is provided over the bevel gear arrangement 201 to measure the backlash. The tool arrangement 200 comprises a locking tool 204, a rotational tool 205 and a measuring tool. The locking tool 204 is provided to lock the first bevel gear 201b with the housing 201a. The locking tool 204 completely arrest or restrict the rotational movement of the first bevel gear 201b. The rotational tool 205 is engaged with the second bevel gear 201c. The rotational tool 205 is adapted to cause an attempt to rotate the second bevel gear 201c. The measuring tool is positioned facing the rotational tool 205. The measuring tool is adapted to measure a backlash of the second bevel gear 201c by attempting to manually rotate the second bevel gear 201c by the rotational tool 205.
[0050] FIG. 3a illustrates an exemplary housing of the bevel gear arrangement in accordance with an embodiment of the present subject matter. The housing 201a is a primary component of the bevel gear arrangement 201 which accommodates the first bevel gear 201b and the second bevel gear 201c. The housing 201a is provided with plurality of shaft holes 301, 302 and mounting holes 302. The shaft holes 301, 302 are provided to accommodate bevel gears 201b, 201c. The shaft holes 301, 302 are designed based on the angle which is required to maintained by the bevel gears 201b, 201c. The shaft holes 301, 302 are provided at an angle with each other. In the preferred embodiment, the shaft holes 301, 302 are provided to accommodate the first bevel gear 201b and the second bevel gear 201c.Accordingly, the shaft holes 301, 302 are referred as a first shaft hole 301 and second shaft hole 302.
[0051] In an aspect, the shaft holes 301, 302 are provided in such as way that the first bevel gear 201b and the second bevel gear 201c are perpendicular to each other. The dimensions of the shaft holes 301, 302 are provided in proportion to the dimensions of the corresponding bevel gears 201b, 201c.
[0052] In addition to the plurality of shaft holes 301, 302, plurality of mounting holes 302 are also provided on the housing 201a. The mounting holes 302 are provided to facilitate mounting of various additional apparatus used in tandem with the tool arrangement 200 and the bevel gear arrangement 201. In an aspect, the mounting holes 302 are provided in the vicinity of the first shaft hole 301which is adapted to accommodate the first bevel gear 201b. These mounting holes 302 are adapted to facilitate mounting of the locking tool 204 on the housing 201a. The locking tool 204 is discussed in detail with reference to FIG. 4.
[0053] FIG. 3b illustrates an exemplary first bevel gear in accordance with an embodiment of the present subject matter. The first bevel gear 201b has a pinion 303 and a pinion carrier 304. The pinion 303 has teeth that are adapted to facilitate transfer of motion from the first bevel gear 201b to the second bevel gear 201c. The pinion carrier 304 has a receptacle which is adapted to engage with the locking tool 204. The first bevel gear 201b is positioned inside the housing 201a through the first shaft hole 301. The pinion carrier 304 of the first bevel gear 201b is positioned over the first shaft hole 301 in a way that the pinion 303 is positioned inside the housing 201a. Between the first shaft hole 301 and the pinion carrier 304, a plurality of shims is provided. These shims are eventually used to adjust the backlash between the first bevel gear 201b and the second bevel gear 201c.
[0054] FIG. 3c illustrates an exemplary second bevel gear in accordance with an embodiment of the present subject matter. The second bevel gear 201c has gear teeth 308 with shaft 305 and a cover 306. The gear teeth 305 are adapted to engage with the pinion teeth 303 of the first bevel gear 201b to facilitate transfer of motion from the first bevel gear 201b to the second bevel gear 201c. The gear teeth 308 have integrated shaft 305 which is adaptable to engage with the rotational tool 205.
[0055] FIG. 3d illustrates an exemplary shim in accordance with an embodiment of the present subject matter. Shims 307 are used to adjust the backlash in the bevel gear arrangement 201. When there is positive backlash between the first bevel gear 201b and the second bevel gear 201c. In this case, shims 307 between the first shaft hole 301 and the pinion casing 304 of the first bevel gear 201b is increased. This elevate the pinion 303 of the first bevel gear 201b and the bring the meshing to optimum range. When there is negative backlash between the first bevel gear 201b and the second bevel gear 201c. In this case, shims 307 between the first shaft hole 301 and the pinion casing 304 of the first bevel gear 201b is decreased. This lower down the pinion 303 of the first bevel gear 201b and the bring the meshing to optimum range.
[0056] FIG. 4 illustrates an exemplary locking tool in accordance with an embodiment of the present subject matter. The locking tool 204 comprises a bar 401 and a shaft 402. The bar 401 is provided with a hole in the middle. Further the bar 401 is provided with locking elements 403 that are adapted to engage with the plurality of mounting holes 302 on the housing 201a. In an aspect of the invention, the bar 401 is a rectangular bar with hole in the middle and the locking elements 403 are provided at each end of the bar 401.
[0057] The shaft 402 is fixedly attached to the bar 401 through the hole in the middle of the bar 401. The shaft 402 is adapted to engage with the first bevel gear 201a. In the engaged state, the shaft 402 locks the first bevel gear 201b in meshed position inside the housing 201a to completely restrict the movement of the first bevel gear 201b during the measurement of the backlash.
[0058] During measurement of the backlash, the locking elements 403 on the bar 401 of the locking tool 204 are adapted to engage with the mounting holes 302 on the housing 201a. This completely restrict the movement of locking tool 204 over the housing 201a.
[0059] FIG. 5 illustrates an exemplary rotational tool in accordance with an embodiment of the present subject matter. The rotation tool 205 comprises a cylindrical casing 501 and a T-shaped rod 502. The cylindrical casing 501 is adapted to enclose the shaft 305 of the second bevel gear 201c which is integrally connected to the gear teeth 308 of the second bevel gear 201c. The cylindrical casing 501 is detachable attached to the shaft 305 of the second bevel gear 201c. The T-shaped rod 502 is adapted to engage with the cylindrical casing 501. The shaft 305 of the second bevel gear 201c is rotated by rotating the cylindrical casing 501 by turning the T-shaped rod 502.
[0060] The rotational tool 205 is adapted to manually rotate the second bevel gear 201c for measurement of the backlash between the first bevel gear 201b and the second bevel gear 201c. The measurement is performed by a measuring tool. The measuring tool is positioned facing the rotational tool 205. Various setting tools could be used to maintain the measuring tool in this position. In an aspect, the measuring device is a dial gauge.
[0061] FIG. 6 illustrates a method 600 performed by the tool arrangement for measuring backlash in a bevel gear arrangement in accordance with one of the embodiments of the present subject matter.
[0062] At step 602, the method 600 comprises locking the first bevel gear 201b with the housing 201a. The first bevel gear 201b is locked with the housing 201a by the locking tool 204. The shaft 402 of the locking tool 204 is engaged with the pinion 303 of the first bevel gear 201b through the pinion carrier 304 to completely restrict the movement of the pinion 303 of the first bevel gear 201b. The locking elements 403 provided on the bar 401 of the locking tool 204 engages with the mounting holes 302 on the housing 201a to completely restrict the movement of the locking tool 204 over the housing 201a.
[0063] At step 604, the method 600 comprises engaging the rotation tool 205 with a shaft 305 of the second bevel gear 201c. The cylindrical casing 501 is detachable attached to the shaft 305 of the second bevel gear 201c. The T-shaped rod 502 is adapted to engage with the cylindrical casing 501. The shaft 305 of the second bevel gear 201c is rotated by rotating the cylindrical casing 501 by turning the T-shaped rod 502.
[0064] At step 606, the method 600 comprises positioning the measuring tool facing the rotational tool 205. In an aspect, the measuring tool is a dial gauge.
[0065] At step 608, the method 600 comprising attempted to rotate the second bevel gear 201c. The rotational tool 205 is adapted to manually rotate the second bevel gear 201c for measurement of the backlash between the first bevel gear 201b and the second bevel gear 201c. The measurement is performed by the measuring tool.
[0066] At step 610, the method 600 comprises measuring the backlash of the second bevel gear 201c. The backlash is measured using the measuring tool by completely restricting the movement of the first bevel gear 201b and attempting to rotate the second bevel gear 201c by the rotational tool 205. The rotation of the second bevel gear 201c is used to measure the backlash between the first bevel gear 201b and the second bevel gear 201c.
[0067] Case-I: When there is positive backlash between the first bevel gear 201b and the second bevel gear 201c. In this case, shims 307 between the first shaft hole 301 and the pinion casing 304 of the first bevel gear 201b is increased. This elevate the pinion 303 of the first bevel gear 201b and the bring the meshing to optimum range.
[0068] Case-II: When there is negative backlash between the first bevel gear 201b and the second bevel gear 201c. In this case, shims 307 between the first shaft hole 301 and the pinion casing 304 of the first bevel gear 201b is decreased. This lower down the pinion 303 of the first bevel gear 304 and bring the meshing to optimum range.
ADVANTAGES
[0069] The present tool arrangement for measuring a backlash in bevel gear arrangement is capable of measuring the backlash between the bevel gears accurately. Further, the construction of the tool arrangement is very simple and easy to operate. Furthermore, the presetn tool arrangement makes it easy to adjsut the backlash by adding or removing the shims.
[0070] The above description does not provide specific details of the manufacture or design of the various components. Those of skill in the art are familiar with such details, and unless departures from those techniques are set out, techniques, known, related art or later developed designs and materials should be employed. Those in the art are capable of choosing suitable manufacturing and design details.
[0071] Further, the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. It will be appreciated that several of the above-disclosed and other features and functions, or alternatives thereof, may be combined into other systems or applications. Various presently unforeseen or unanticipated alternatives, modifications, variations, or improvements therein may subsequently be made by those skilled in the art without departing from the scope of the present disclosure as encompassed by the following claims.
[0072] The claims, as originally presented and as they may be amended, encompass variations, alternatives, modifications, improvements, equivalents, and substantial equivalents of the embodiments and teachings disclosed herein, including those that are presently unforeseen or unappreciated, and that, for example, may arise from applicants/patentees and others.
[0073] It will be appreciated that variants of the above-disclosed and other features and functions, or alternatives thereof, may be combined into many other different systems or applications. Various presently unforeseen or unanticipated alternatives, modifications, variations, or improvements therein may be subsequently made by those skilled in the art which are also intended to be encompassed by the following claims.
,CLAIMS:We Claim:
1. A tool arrangement (200) for measuring a backlash in a bevel gear arrangement (201) having a first bevel gear (201b) in engagement with a second bevel gear (201c) positioned in a housing (201a), the tool arrangement (200) comprises:
a locking tool (204) for locking the first bevel gear (201b) with the housing (201a), to restrict the rotational movement of the first bevel gear (201b);
a rotational tool (205) engaged with a shaft (305) of the second bevel gear (201c), and adapted to cause an attempt to rotate the second bevel gear (201c); and
a measuring tool positioned facing the rotational tool (205), and adapted to measure a backlash of the second bevel gear (201c) by attempting to manually rotate the second bevel gear (201c) by the rotational tool (205).
2. The tool arrangement (200) as claimed in claim 1, wherein the housing (201a) is provided with a plurality of shaft holes (301, 302) to accommodate the first bevel gear (201b) and the second bevel gear (201c) and plurality of mounting holes (302) to accommodate the locking tool (204).
3. The tool arrangement (200) as claimed in claim 1, wherein the locking tool (204) comprises:
a bar (401) having a hole in the middle, wherein the bar (401) has locking elements (403) provided at each end; and
a shaft (402) fixedly attached to the bar (401) through the hole, wherein the shaft (402) is adapted to engage with the first bevel gear (201b) to lock the first bevel gear (201b) with the housing (201a), to restrict the rotational movement of the first bevel gear (201b) during measurement of the backlash.

4. The tool arrangement (200) as claimed in claims 2 and 3, wherein the locking elements (403) on the bar (401) of the locking tool (204) are adapted to engage with the mounting holes (302) on the housing (201a) during measurement of the backlash.

5. The tool arrangement (200) as claimed in claim 1, wherein the first bevel gear (201b) and the second bevel gear (201c) are substantially perpendicular to each other in meshed position.

6. The tool arrangement (200) as claimed in claim 1, wherein the first bevel gear (201b) has a pinion (303) and a pinion carrier (304) and the second bevel gear (201c) has a gear teeth (308) with shaft (305) and cover (306).

7. The tool arrangement (200) as claimed in 1, wherein plurality of shims (307) is provided between the shaft hole (301) of the first bevel gear (201b) and pinion carrier (304) of the first bevel gear (201b) to adjust backlash between the first bevel gear (201b) and the second bevel gear (201c).

8. The tool arrangement (200) as claimed in claim 1, wherein adjustment of the backlash between the first bevel gear (201b) and the second bevel gear (201c) is performed by changing the number of shims (307) between the shaft hole (301) of the first bevel gear (201b) and the pinion carrier (304) of the first bevel gear (201b).

9. The tool arrangement (200) as claimed in claim 1, wherein the rotational tool (205) comprises:
a cylindrical casing (501) adapted to enclose the shaft (305) of the second bevel gear (201c), wherein the cylindrical casing (501) is detachably attached to the shaft (305) of the second bevel gear (201c); and
a T-shaped rod (502) adapted to engage with the cylindrical casing (501), wherein the shaft (305) of the second bevel gear (201c) is rotated by rotating the cylindrical casing (501) by turning the T-shaped rod (502).
10. The tool arrangement (200) as claimed in claim 1, wherein the backlash measuring device is a dial gauge.
11. A method (600) performed by the tool arrangement (200) for measuring backlash in a bevel gear arrangement (201) having a first bevel gear (201b) in engagement with a second bevel gear (201c) positioned in a housing, the method comprising:
locking (602), by a locking tool (204), the first bevel gear (201b) with the housing (201a),
engaging (604) a rotating tool (205) with a shaft (305) of the second bevel gear (201c);
positioning (606) a measuring tool facing a rotating tool (205); and
attempting (608) to rotate, by the rotating tool (205), the second bevel gear (201c); and
measuring (610), by the measuring tool, the backlash of the second bevel gear (201c).
12. The method (600) as claimed in claim 11, wherein the method (600) further comprises:
increasing the number of shims (307) provided between the first shaft hole (301) and the pinion carrier (304) of the first bevel gear (201b) when there is positive backlash; or
decreasing the number of shims (307) provided between the first shaft hole (301) and the pinion carrier (304) of the first bevel gear (201b) when there is negative backlash.