A tool and method for quickly measuring the size of a tapered bearing

Abstract

The present invention relates to the field of bearing measurement technology, and in particular to a tool and method for quickly measuring the size of a tapered bearing, comprising a support plate, a circular through hole is opened in the middle of the support plate, and a connecting ring coaxially distributed with the circular through hole is integrally formed in the middle of the lower end of the support plate, and the inner diameter of the connecting ring is consistent with the aperture of the circular through hole. The measuring device used in the present invention can press and limit the tapered bearing during the measurement process, and the inner ring, tapered roller and outer ring of the tapered bearing are in a precise assembly state and kept horizontal, avoiding the phenomenon of the inner ring and outer ring of the tapered bearing tilting during the unilateral force measurement of the tapered bearing, ensuring the accuracy of the size measurement, and providing a certain pre-pressure to the tapered bearing to ensure that the measurement result is obtained under the required state.

Description

Technical Field

[0001] The invention relates to the technical field of bearing measurement, and in particular to a tool and a method for quickly measuring the size of a tapered bearing. Background Art

[0002] Bearings are key components in automobile transmissions, affecting the quality and life of the entire transmission system. When choosing bearing types, different types of bearings determine different design methods and assembly processes. Taper bearings are used on shafts with large axial forces, usually in pairs, and the bearing preload during assembly is particularly important. If the preload is too small, the bearing rotation process cannot meet the use requirements. If the preload is too large, the bearing force exceeds its limit, affecting the bearing life. Therefore, when assembling the gearbox, it is critical to control the axial force of the tapered bearing.

[0003] The axial force of the tapered bearing is adjusted by gaskets of different thicknesses. How to choose the gasket of appropriate thickness, the accuracy of the gap size measurement is the key, the size error must be less than 0.02, so it is necessary to measure the gap size of the tapered bearing after installation. However, the tapered bearing is installed in the housing component, and the housing end face generally has a larger opening. The depth gauge cannot be fixed on the housing for direct measurement, but needs to be assisted by different gauges for measurement. The measurement error is large, and because the inner ring, tapered roller and outer ring of the tapered bearing are in a separated state, during measurement, unilateral force measurement can easily cause the inner and outer rings of the bearing to tilt, resulting in a large difference in the measured size. At the same time, when selecting a tapered bearing, it is generally necessary to select a gasket design. When measuring the size, it is necessary to measure the tapered bearing under a certain preload. When measuring with conventional measuring tools, the preload cannot be provided, so that the measurement result does not reach the preset state. Summary of the invention

[0004] Based on this, it is necessary to provide a tool and method for quickly measuring the size of a tapered bearing, aiming to solve the problems that arise in the prior art when measuring the size of a tapered bearing installed in a gearbox housing after installation.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme to achieve: a tool for quickly measuring the size of a tapered bearing, comprising: a support plate, a circular through hole is opened in the middle of the support plate, and a connecting ring coaxially distributed with the circular through hole is integrally formed in the middle of the lower end of the support plate, and the inner diameter of the connecting ring is consistent with the aperture of the circular through hole.

[0006] It also includes a measuring device, which is connected to the support plate. The measuring device includes a baffle ring installed on the inner surface of the connecting ring, a measuring mechanism is arranged in the baffle ring, a pressure cover which slides with the circular through hole is arranged above the measuring mechanism, a measuring through hole is opened in the middle of the pressure cover, a reading mechanism is connected to the pressure cover, and the pressure cover is detachably mounted on the support plate.

[0007] The measuring mechanism includes a positioning column slidably inserted into the middle of the baffle ring, a cylindrical groove is opened in the middle of the upper end of the positioning column, a cylindrical rod is installed in the middle of the upper end of the bottom wall of the cylindrical groove, a spring is placed in the cylindrical groove, and the upper end of the spring is tightly attached to the lower end of the pressure cover.

[0008] The indicating mechanism comprises a meter seat detachably mounted on the pressure cover, an indicating meter is mounted on the meter seat, and a contact rod of the indicating meter itself contacts the upper end of the cylindrical rod.

[0009] According to an embodiment of the present invention, a plurality of first threaded holes uniformly distributed along the circumferential direction of the axis of the circular through hole are formed on the upper end of the support plate.

[0010] According to an embodiment of the present invention, the pressure cover is provided with a plurality of circumferentially evenly distributed connecting through holes, the positions of the plurality of connecting through holes correspond one-to-one to the positions of the plurality of first threaded holes, bolts are inserted into the connecting through holes, and the bolts are threadedly connected to the corresponding first threaded holes.

[0011] According to an embodiment of the present invention, a second threaded hole is further provided on the gland, and the table base is fixedly connected to the second threaded hole via a screw.

[0012] According to an embodiment of the present invention, an annular protrusion is integrally formed on the upper end of the positioning column, and the annular protrusion is slidably matched with the circular through hole.

[0013] According to an embodiment of the present invention, a truncated cone protrusion for penetrating into the inner ring hole of the bearing is integrally formed on the lower end of the positioning column.

[0014] According to an embodiment of the present invention, a circular ring protrusion for positioning the pressure cover is integrally formed at the lower end of the pressure cover, and the circular ring protrusion is plug-fitted with the circular through hole.

[0015] In addition, the present invention also provides a method for quickly measuring the size of a tapered bearing, which specifically includes the following steps:

[0016] S1: First place the positioning column in the baffle ring, then place the spring in the cylindrical groove on the positioning column, then detachably install the indicator on the pressure cover through the table base, and then detachably install the pressure cover on the support plate.

[0017] S2: Perform a reference zeroing on the measuring tool assembled in step S1. When zeroing, adjust the pointer of the indicator to align with the zero position.

[0018] S3: Install the calibrated positioning column of the measuring tool into the tapered bearing to be measured, and then press the support plate.

[0019] S4: The support plate contacts the end face of the gearbox housing, and the value indicated by the indicator pointer is read after the indicator pointer changes steadily.

[0020] S5: Calculate the measurement result according to the value pointed by the indicator pointer, and the measurement is completed.

[0021] In summary, the present invention has the following beneficial effects:

[0022] 1. The measuring device used in the present invention can press and limit the tapered bearing during the measurement process. The inner ring, tapered roller and outer ring of the tapered bearing are in a precise assembly state and remain horizontal, avoiding the phenomenon of tilting of the inner ring and outer ring of the tapered bearing during unilateral force measurement of the tapered bearing, ensuring the accuracy of dimensional measurement, and providing a certain pre-pressure on the tapered bearing to ensure that the measurement result is obtained under the required state.

[0023] 2. The measuring device used in the present invention cooperates with the support plate to measure the tapered bearing installed in the housing component, and the measurement can be performed by simply inserting the measuring device deep into the housing. The measurement operation is convenient and the reading can be directly obtained, eliminating the need for conversion operations.

[0024] 3. The present invention has a simple structure and is easy to assemble and splice, which can effectively save the time of the assembly process and reduce the measurement cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0026] Figure 1 A three-dimensional structural schematic diagram of the present invention is shown.

[0027] Figure 2 A top view of the present invention is shown.

[0028] Figure 3 Shows Figure 2 Sectional view of AA.

[0029] Figure 4 A schematic structural diagram of the support plate, the first threaded hole, the circular through hole, the connecting ring and the baffle ring of the present invention is shown.

[0030] Figure 5 A schematic diagram of the structure of the measuring mechanism of the present invention without the spring is shown.

[0031] Figure 6 The schematic diagram of the structure of the gland and the measuring through hole of the present invention is shown.

[0032] Figure 7 The structural schematic diagram of the table stand of the present invention is shown.

[0033] Figure 8A schematic diagram of the benchmark calibration of the present invention is shown.

[0034] Fig. 9 The working schematic diagram of the present invention is shown.

[0035] Among them, the above-mentioned drawings include the following figure marks: 1. support plate; 11. first threaded hole; 2. circular through hole; 3. connecting ring; 4. measuring device; 41. baffle ring; 42. measuring mechanism; 421. positioning column; 4211. annular protrusion; 4212. frustum protrusion; 422. cylindrical groove; 423. cylindrical rod; 424. spring; 43. pressure cover; 431. connecting through hole; 432. second threaded hole; 433. circular protrusion; 44. indicating mechanism; 441. dial base; 442. indicating dial; 45. measuring through hole; 5. gearbox housing; 6. tapered bearing; 7. calibration block. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0037] See also Figure 1 , Figure 2 and Figure 4 A tool for quickly measuring the size of a tapered bearing includes a support plate 1, a circular through hole 2 is opened in the middle of the support plate 1, a connecting ring 3 coaxially distributed with the circular through hole 2 is integrally formed in the middle of the lower end of the support plate 1, and the inner diameter of the connecting ring 3 is consistent with the aperture of the circular through hole 2.

[0038] See also Figure 1 , Figure 3 and Figure 6 The tapered bearing size rapid measurement tool also includes a measuring device 4, which is connected to the support plate 1. The measuring device 4 includes a baffle ring 41 installed in the inner screen of the connecting ring 3, and a measuring mechanism 42 is arranged in the baffle ring 41. A pressure cover 43 that slides with the circular through hole 2 is arranged above the measuring mechanism 42, and a measuring through hole 45 is opened in the middle of the pressure cover 43. A reading mechanism 44 is connected to the pressure cover 43, and the pressure cover 43 can be detachably installed on the support plate 1.

[0039] See also Figure 1 , Figure 3 and Figure 6The measuring mechanism 42 includes a positioning column 421 slidably penetrated in the middle of the baffle ring 41, a cylindrical groove 422 is opened in the middle of the upper end of the positioning column 421, a cylindrical rod 423 is installed in the middle of the upper end of the bottom wall of the cylindrical groove 422, a spring 424 is placed in the cylindrical groove 422, the upper end of the spring 424 is tightly attached to the lower end of the pressure cover 43, and an annular protrusion 4211 is integrally formed on the upper end of the positioning column 421, and the annular protrusion 4211 is slidably matched with the circular through hole 2.

[0040] During specific work, before measurement, the positioning column 421 is first passed through the circular through hole 2 and the connecting ring 3 and inserted into the baffle ring 41. The positioning column 421 drives the annular protrusion 4211 to enter the circular through hole 2 and slide with the circular through hole 2. At the same time, the upper end of the baffle ring 41 blocks and limits the annular protrusion 4211 to prevent the positioning column 421 from falling off from the lower end of the connecting ring 3. Then, the spring 424 is placed in the cylindrical groove 422 and sleeved on the outer circumference of the cylindrical rod 423. The spring 424 is provided with a variety of specifications. Springs 424 of different specifications can be selected according to measurement needs to provide different forces.

[0041] See also Figure 4 The upper end of the support plate 1 is provided with a plurality of first threaded holes 11 evenly distributed along the circumferential direction of the axis of the circular through hole 2 .

[0042] See also Figure 4 and Figure 6 The pressure cover 43 is provided with a plurality of circumferentially evenly distributed connecting through holes 431, and the positions of the plurality of connecting through holes 431 correspond one-to-one to the positions of the plurality of first threaded holes 11. Bolts are inserted into the connecting through holes 431, and the bolts are threadedly connected to the corresponding first threaded holes 11. The lower end of the pressure cover 43 is integrally formed with a circular protrusion 433 for positioning the pressure cover 43, and the circular protrusion 433 is plugged into and matched with the circular through hole 2.

[0043] During specific operation, after the spring 424 is placed in the cylindrical groove 422, the pressure cover 43 is covered on the support plate 1, and the pressure cover 43 drives the annular protrusion 433 to be inserted into the circular through hole 2, so as to accurately locate the position where the pressure cover 43 is placed, and then the pressure cover 43 is rotated, and the pressure cover 43 drives the multiple connecting through holes 431 to rotate, so that the multiple connecting through holes 431 correspond to the multiple first threaded holes 11 one by one, and then select multiple existing bolts, and respectively pass the multiple bolts through the multiple connecting through holes 431 and threadedly connect them with the corresponding first threaded holes 11, so that the pressure cover 43 is fixed on the support plate 1, and the pressure cover 43 limits the upper end of the spring 424.

[0044] See also Figure 1 , Figure 3 and Figure 7The indicating mechanism 44 includes a meter base 441 detachably mounted on the pressure cover 43 , on which a meter 442 is mounted, and a contact rod of the meter 442 contacts the upper end of the cylindrical rod 423 .

[0045] See also Figure 6 and Figure 7 The pressure cover 43 is also provided with a second threaded hole 432 , and the table base 441 is fixedly connected to the second threaded hole 432 via a screw.

[0046] During specific operation, after the pressure cover 43 is fixed on the support plate 1, the indicator 442 is installed on the dial base 441. The indicator 442 is an existing dial indicator. Then, the dial base 441 is installed in the second threaded hole 432 through the existing screw, and then the indicator 442 is limited. At this time, the measuring section of the indicator 442 passes through the measuring through hole 45 and is located directly above the cylindrical rod 423.

[0047] See also Figure 3 and Figure 5 The lower end of the positioning column 421 is integrally formed with a truncated cone protrusion 4212 for penetrating into the inner ring hole of the bearing.

[0048] In specific work, the measuring tool needs to be zeroed before measurement (such as Figure 8 As shown), insert the conical protrusion 4212 at the lower end of the positioning column 421 into the calibration block 7, and then press the support plate 1. After the lower end of the support plate 1 contacts the calibration block 7, the contact rod of the indicator 442 contacts the cylindrical rod 423, and the pointer of the indicator 442 changes. Align the pointer of the indicator 442 to the zero position, and the calibration block size value A will be used as a reference value in subsequent measurements.

[0049] After the tooling reference is reset to zero, the truncated cone protrusion 4212 on the positioning column 421 is inserted into the inner ring of the tapered bearing 6 installed on the gearbox housing 5 (such as Fig. 9As shown), then the support plate 1 is pressed downward, and the support plate 1 drives the contact rod of the indicator 442 to move downward through the pressure cover 43 and the meter seat 441. At the same time, the spring 424 applies pressure to the inner ring of the tapered bearing 6 through the positioning column 421 to ensure that the inner ring, tapered roller and outer ring of the tapered bearing 6 are in a state of precise cooperation with each other, so as to avoid the tapered bearing 6 from being subjected to unilateral force and causing the inner ring and outer ring of the bearing to tilt, thereby improving the measurement accuracy. The tapered bearing 6 blocks the positioning column 421, and the positioning column 421 slides relative to the circular through hole 2 through the truncated cone protrusion 4212 until the lower end of the support plate 1 contacts the end surface of the gearbox housing 5, and then wait for the needle of the indicator 442 to indicate stability, and read the value indicated by the pointer of the indicator 442. If the pointer is in the counterclockwise direction at 0, the decimal value data is read, and the actual measured data is A+b1; if the pointer is in the clockwise direction at 0, the decimal value data b2 is read, and the actual measured data is A-b2; the measurement is completed at this point.

[0050] In addition, the present invention also provides a method for quickly measuring the size of a tapered bearing, which specifically includes the following steps:

[0051] S1: First place the positioning column 421 in the baffle ring 41, then place the spring 424 in the cylindrical groove 422 on the positioning column 421, then detachably install the indicator 442 on the pressure cover 43 through the meter base 441, and then detachably install the pressure cover 43 on the support plate 1.

[0052] S2: Perform a reference zeroing on the measuring tool assembled in step S1. When zeroing, adjust the pointer of the indicator 442 to align with the zero position.

[0053] S3: Install the calibrated positioning column 421 of the measuring tool into the tapered bearing to be measured, and then press the support plate 1.

[0054] S4: The support plate 1 contacts the end surface of the gearbox housing, and the value indicated by the pointer of the indicator 442 is read after the pointer of the indicator 442 changes stably.

[0055] S5: Calculate the measurement result according to the value pointed by the pointer of the indicator 442, and the measurement is completed.

[0056] In the description of the embodiments of the present invention, it should be noted that the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "top", "bottom", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0057] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A tool for rapid measurement of tapered bearing dimensions, characterized in that: The invention comprises a support plate (1), wherein a circular through hole (2) is formed in the middle of the support plate (1), and a connecting ring (3) coaxially distributed with the circular through hole (2) is integrally formed in the middle of the lower end of the support plate (1), and the inner diameter of the connecting ring (3) is consistent with the aperture of the circular through hole (2); A measuring device (4) is connected to the support plate (1), the measuring device (4) comprising a baffle ring (41) installed in the inner surface of the connecting ring (3), a measuring mechanism (42) being arranged in the baffle ring (41), a pressure cover (43) being arranged above the measuring mechanism (42) and being slidably matched with the circular through hole (2), a measuring through hole (45) being opened in the middle of the pressure cover (43), a number indicating mechanism (44) being connected to the pressure cover (43), and the pressure cover (43) being detachably mounted on the support plate (1); The measuring mechanism (42) comprises a positioning column (421) slidably inserted into the middle of the baffle ring (41), with a truncated cone protrusion (4212) integrally formed at the lower end, a cylindrical groove (422) is provided in the middle of the upper end of the positioning column (421), a cylindrical rod (423) is installed in the middle of the upper end of the bottom wall of the cylindrical groove (422), a spring (424) is placed in the cylindrical groove (422), and the upper end of the spring (424) is in close contact with the lower end of the pressure cover (43); The indicating mechanism (44) comprises a meter base (441) detachably mounted on the pressure cover (43), an indicating meter (442) being mounted on the meter base (441), and a contact rod of the indicating meter itself being in contact with the upper end of the cylindrical rod (423); After the tooling reference is reset to zero, the truncated cone protrusion (4212) on the positioning column (421) is inserted into the inner ring of the tapered bearing (6) installed on the gearbox housing (5), and then the support plate (1) is pressed downward. The support plate (1) drives the contact rod of the indicator (442) to move downward through the pressure cover (43) and the meter base (441). At the same time, the spring (424) applies pressure to the inner ring of the tapered bearing (6) through the positioning column (421) until the lower end of the support plate (1) contacts the end surface of the gearbox housing (5), wait for the needle of the indicator (442) to indicate stability, and read the value indicated by the pointer of the indicator (442).

2. A tool for rapid measurement of tapered bearing dimensions according to claim 1, characterized in that: The upper end of the support plate (1) is provided with a plurality of first threaded holes (11) evenly distributed along the circumference of the axis of the circular through hole (2).

3. The tool for rapid measurement of tapered bearing dimensions according to claim 2, characterized in that: The pressure cover (43) is provided with a plurality of connection through holes (431) evenly distributed in the circumferential direction, the positions of the plurality of connection through holes (431) correspond one-to-one to the positions of the plurality of first threaded holes (11), bolts are inserted into the connection through holes (431), and the bolts are threadedly connected to the corresponding first threaded holes (11).

4. The tool for rapid measurement of tapered bearing dimensions according to claim 1, characterized in that: The pressure cover (43) is also provided with a second threaded hole (432), and the table base (441) is fixedly connected to the second threaded hole (432) via a screw.

5. The tool for rapid measurement of tapered bearing dimensions according to claim 1 is characterized in that: An annular protrusion (4211) is integrally formed on the upper end of the positioning column (421), and the annular protrusion (4211) is slidably matched with the circular through hole (2).

6. The tool for rapid measurement of tapered bearing dimensions according to claim 1, characterized in that: The lower end of the pressure cover (43) is integrally formed with a circular protrusion (433) for positioning the pressure cover (43), and the circular protrusion (433) is plug-fitted into the circular through hole (2).

7. A method for rapid measurement of tapered bearing dimensions, characterized in that: The method is completed by using the measuring tool as described in any one of claims 1 to 6, including the following steps: S1: firstly place the positioning column (421) in the baffle ring (41), then place the spring (424) in the cylindrical groove (422) on the positioning column (421), then detachably install the indicator (442) on the pressure cover (43) through the meter base (441), and then detachably install the pressure cover (43) on the support plate (1); S2: performing a reference zeroing operation on the measuring tooling assembled in step S1. When performing the zeroing operation, the pointer of the indicator (442) is adjusted to align with the zero position; S3: Installing the calibrated positioning column (421) of the measuring tool into the tapered bearing to be measured, and then pressing the support plate (1); S4: the support plate (1) contacts the end surface of the gearbox housing, and the value indicated by the pointer of the digital indicator (442) is read after the pointer of the digital indicator (442) changes stably; S5: Calculate the measurement result according to the value pointed by the pointer of the indicator (442), and the measurement is completed.

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