Bearing thickness testing fixture

Abstract

The utility model belongs to the technical field of detection tools, and provides a bearing thickness detection tool, which comprises a base, an installation position and a station are sequentially arranged on the base along the vertical direction, and the station and the installation position are communicated with each other and penetrate through the base along the vertical direction; the measuring body comprises a core shaft and a movable seat, the movable seat can move on the mounting position in the vertical direction, the core shaft is arranged in the middle of the movable seat, at least part of the core shaft extends out of the mounting position, and a lengthening rod is arranged on the core shaft; a through mounting hole is formed in the middle of the supporting seat, the supporting seat penetrates through the mandrel through the mounting hole and covers the mounting position, the mounting hole is communicated with the mounting position, the lengthening rod extends into the mounting hole, and at least part of the mandrel extends into the mounting hole; the dial indicator is provided with a measuring rod, the bottom end of the measuring rod is provided with a measuring head, and the measuring rod extends into the mounting hole from the top of the supporting seat until the measuring head abuts against the end part of the extension rod; according to the invention, the thickness of the bearing can be directly measured, and the measurement accuracy is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of testing tools, in particular to a bearing thickness testing tool. BACKGROUND

[0002] The tapered roller bearing is divided into two parts of an inner ring assembly and an outer ring. In engineering installation, the inner ring assembly is installed on a mandrel, and the outer ring is installed in a housing to form a standard use play between the inner and outer rings. After the tapered roller bearing is installed in the housing, it needs to ensure a certain play to work normally. Therefore, in order to ensure the use play of the tapered roller bearing after installation, the thickness of the bearing inner and outer rings in the combined state needs to be measured before installation.

[0003] In actual measurement, the tapered roller bearing inner and outer rings are in line contact with the small taper angle of the rollers and the inner and outer raceways, and the upper and lower end faces of the bearing in the free combined state are in an unstable state. Therefore, the existing conventional measuring tools cannot directly measure the thickness of the bearing, and it is difficult to measure the accurate thickness of the bearing. CONTENT OF THE UTILITY MODEL

[0004] In view of the above shortcomings of the prior art, the purpose of the present application is to provide a bearing thickness testing tool to solve the problem that the thickness of the tapered roller bearing is difficult to accurately measure in the prior art.

[0005] To achieve the above-mentioned purpose and other related purposes, the present application provides a bearing thickness testing tool, which comprises:

[0006] A base is provided with a mounting position and a working position in sequence in the vertical direction. The working position is used to accommodate the bearing for detection. The working position and the mounting position are in communication with each other and pass through the base in the vertical direction.

[0007] A measuring body is arranged on the base. The measuring body comprises a mandrel and a movable seat. The movable seat is arranged on the mounting position and can move in the vertical direction on the mounting position. The mandrel is arranged in the middle of the movable seat and at least partially protrudes from the mounting position. An extension rod is arranged on the mandrel.

[0008] A support seat is arranged on the base. The middle part of the support seat has a through mounting hole. The support seat passes through the mandrel and covers the mounting position through the mounting hole. The mounting hole is in communication with the mounting position. The extension rod extends into the mounting hole, and the mandrel at least partially extends into the mounting hole. The support seat and the movable seat have a spacing therebetween.

[0009] A dial gauge is arranged on the support base, and has a measuring rod with a measuring head arranged at the bottom end of the measuring rod. The measuring rod extends into the mounting hole from the top of the support base until the measuring head abuts against the end of the extended rod.

[0010] Optionally, a stepped structure is formed between the sidewall of the mounting site and the sidewall of the work station, and is used for limiting the movable seat.

[0011] Optionally, the sum of the height of the portion of the mandrel extending into the mounting hole and the height of the extended rod is less than the height of the middle portion of the support base.

[0012] Optionally, the height of the movable seat is less than the depth of the mounting site.

[0013] Optionally, the middle portion of the support base is in a columnar structure, and the mounting hole extends through the top to the bottom of the columnar structure.

[0014] Optionally, the top of the columnar structure is provided with a locking member for locking the dial gauge at the top end of the columnar structure. An assembly hole is formed in the locking member, and the top of the columnar structure at least partially extends into the assembly hole from the bottom of the locking member to allow the locking member to be sleeved on the columnar structure. The measuring rod at least partially extends into the assembly hole and the mounting hole from the top of the locking member in sequence until the measuring head abuts against the end of the extended rod.

[0015] Optionally, an installation cavity is arranged in the locking member, and the installation cavity communicates with the assembly hole. An elastic member is further arranged on the installation cavity, and a guide hole is formed in the elastic member for guiding and positioning the measuring rod. The top of the columnar structure extends into the assembly hole and the installation cavity from the bottom of the locking member and abuts against the bottom of the elastic member. The measuring head extends into the assembly hole, the guide hole and the mounting hole from the top of the locking member in sequence until the measuring head abuts against the end of the extended rod.

[0016] Optionally, the diameter of the assembly hole gradually decreases towards the top of the elastic member until the diameter of the assembly hole is the same as the diameter of the measuring rod.

[0017] Optionally, the elastic member matches the installation cavity.

[0018] Optionally, the support base and the base are connected by fasteners.

[0019] In the bearing thickness gauge provided in this application, a standard block is first defined. The thickness of the standard block is the thickness of the bearing under standard clearance conditions. The gauge is placed on top of the standard block on a platform, allowing the standard block to enter the workstation from the bottom of the base. The standard block abuts against the movable seat, lifting it. The movable seat moves vertically towards the support base in its mounting position, causing the mandrel and extension rod to be lifted within the mounting hole. The extension rod lifts the measuring rod, adjusting the dial indicator pointer position for gauge calibration. Then, the bearing to be... The bearing to be tested is placed on the platform, and the inspection fixture is placed above the bearing to be tested. The bearing to be tested enters the workstation from the bottom of the base, and the bearing to be tested comes into contact with the movable seat. The bearing to be tested lifts the movable seat, and the movable seat moves vertically in the mounting position towards the support seat. This causes the mandrel and extension rod to be lifted in the mounting hole, thereby lifting the measuring rod. The pointer position of the dial indicator changes, and the dial indicator reading is read. The sum of the dial indicator reading and the thickness of the standard block is the thickness of the bearing to be tested. This allows for direct measurement of the bearing thickness, improving the accuracy of the measurement. Attached Figure Description

[0020] Fig. 1 This is a schematic diagram of the bearing thickness gauge of this utility model when calibrating a dial indicator;

[0021] Fig. 2 This is a schematic diagram of the bearing thickness gauge of this utility model when inspecting bearings.

[0022] Part Number Explanation

[0023] 1-Base; 2-Mandrel; 3-Modible seat; 4-Support seat; 5-Mounting hole; 6-Dial indicator; 7-Measuring rod; 8-Measuring head; 9-Standard block; 10-Step structure; 11-Columnar structure; 12-Locking element; 13-Elastic element; 14-Fastener; 15-Bearing; 16-Extension rod. Detailed Implementation

[0024] The following specific embodiments illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification.

[0025] It is to be understood that the structures, proportions, sizes, etc. shown in the drawings accompanying the present specification are merely intended to facilitate the understanding of the content disclosed by the present specification for those skilled in the art to understand and read, and are not intended to limit the conditions that can be implemented by the present application, and therefore do not have substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that can be produced by the present application and the purposes that can be achieved, should still fall within the scope of the technical content disclosed by the present application. At the same time, the terms such as "front", "back", "left", "right", "middle" and "one" in the present specification are only for the convenience of clear description, and are not intended to limit the scope of the present application, and the change or adjustment of the relative relationship, without substantially changing the technical content, is also considered as the scope of the present application.

[0026] Please refer to Figs. 1-2 The present application exemplarily provides a bearing thickness gauge, comprising:

[0027] A base 1, the base 1 is sequentially provided with a mounting position and a working position in the vertical direction, the working position is used for accommodating a bearing 15 for detection, and the working position and the mounting position are communicated with each other and penetrate the base 1 in the vertical direction;

[0028] A measuring body is arranged on the base 1, the measuring body comprises a mandrel 2 and a movable seat 3, the movable seat 3 is arranged on the mounting position, the movable seat 3 can move in the vertical direction on the mounting position, the mandrel 2 is arranged in the middle of the movable seat 3, the mandrel 2 at least partially extends from the mounting position, and the mandrel 2 is provided with an extension rod 16;

[0029] A support seat 4 is arranged on the base 1, the middle of the support seat 4 has a penetrating mounting hole 5, the support seat 4 penetrates the mandrel 2 through the mounting hole 5 and covers the mounting position, the mounting hole 5 is communicated with the mounting position, the extension rod 16 extends into the mounting hole 5, the mandrel 2 at least partially extends into the mounting hole 5, and the support seat 4 has a spacing with the movable seat 3;

[0030] A dial gauge 6 is arranged on the support seat 4, the dial gauge 6 has a measuring rod 7, the bottom end of the measuring rod 7 is provided with a measuring head 8, the measuring rod 7 extends into the mounting hole 5 from the top of the support seat 4 until the measuring head 8 abuts against the end of the extension rod 16.

[0031] In the bearing thickness gauge provided in the application, a standard block 9 is first defined, the thickness of the standard block 9 is the thickness of the bearing 15 under the standard clearance condition, the gauge is placed above the standard block 9 by placing the standard block 9 on the platform, the standard block 9 enters the work station from the bottom of the base 1, the standard block 9 abuts against the movable seat 3, the standard block 9 lifts up the movable seat 3, the movable seat 3 moves vertically on the mounting position towards the support seat 4, the mandrel 2 and the extension rod 16 are lifted up in the mounting hole 5, the extension rod 16 lifts up the measuring rod 7, the pointer position of the dial gauge 6 is adjusted, the gauge is calibrated, then the bearing 15 to be measured is placed on the platform, the gauge is placed above the bearing 15 to be measured, the bearing 15 to be measured enters the work station from the bottom of the base 1, the bearing 15 to be measured abuts against the movable seat 3, the bearing 15 to be measured lifts up the movable seat 3, the movable seat 3 moves vertically on the mounting position towards the support seat 4, the mandrel 2 and the extension rod 16 are lifted up in the mounting hole 5, the measuring rod 7 is lifted up, the pointer position of the dial gauge 6 changes, the reading of the dial gauge 6 is read, the sum of the reading of the dial gauge 6 and the thickness of the standard block 9 is the thickness of the bearing 15 to be measured, the thickness of the bearing 15 can be directly measured, and the measurement accuracy is improved.

[0032] It should be noted that the standard block 9 is a standard part for calibrating the dial gauge 6, under the standard clearance condition between the inner and outer rings of the tapered roller bearing 15 after installation, the thickness of the bearing 15 is the same as the thickness of the standard block 9 at this time, the dial gauge 6 of the gauge is calibrated and adjusted by the standard block 9, and the accuracy of the gauge measurement is ensured.

[0033] In some embodiments, a step structure 10 is formed between the side wall of the mounting position and the side wall of the work station, the step structure 10 is used for limiting the movable seat 3, the movable seat 3 is limited by the step structure 10, the movable seat 3 is prevented from falling into the work station, and the standard block 9 or the bearing 15 to be measured is facilitated to enter the work station.

[0034] It can be understood that when the bearing 15 to be measured enters the work station, the outer ring of the bearing 15 to be measured is on the top and the inner ring assembly is on the bottom, the outer ring of the bearing 15 to be measured contacts the bottom of the movable seat 3, the pressure between the inner and outer rings of the bearing 15 to be measured is applied by the movable seat 3, the fitting gap between the inner and outer rings is effectively eliminated, the measurement accuracy is improved, and since the mandrel 2 is arranged in the middle of the movable seat 3, the center line of the mandrel 2, the center line of the extension rod 16 and the center line of the movable seat 3 are on the same line, the bottom of the movable seat 3 is in contact with the outer ring cross section of the bearing 15 to be measured, the upper end surface measurement point of the bearing 15 to be measured is on the shaft center of the bearing 15 to be measured, the problem of inaccurate measurement caused by the non-parallel upper and lower end surfaces of the bearing 15 due to unstable combination of the inner and outer rings of the bearing 15 is effectively avoided, the difference between the measurement points is caused, and the measurement accuracy is further ensured.

[0035] In the above embodiment, the sum of the height of the portion of the mandrel 2 extending into the mounting hole 5 and the height of the extension rod 16 is less than the height of the middle portion of the support seat 4, after the standard block 9 or the bearing 15 to be measured enters the work station, the standard block 9 can lift the movable seat 3, so that the movable seat 3 moves vertically away from the step structure 10, towards the direction of the support seat 4, the portion of the mandrel 2 extending into the mounting hole 5 and the extension rod 16 are lifted in the mounting hole 5, to complete the calibration or measurement of the dial gauge 6.

[0036] In the present embodiment, the height of the movable seat 3 is less than the depth of the mounting position, when the movable seat 3 is installed on the mounting position, there is a certain gap between the movable seat 3 and the support seat 4, so that the movable seat 3 can move vertically towards or away from the support seat 4, to realize the lifting of the extension rod 16 in the mounting hole 5.

[0037] In the present embodiment, the middle portion of the support seat 4 is a column structure 11, the mounting hole 5 penetrates from the top to the bottom of the column structure 11, specifically, the measuring rod 7 of the dial gauge 6 extends into the mounting hole 5 from the top of the column structure 11, to be installed on the support seat 4, the mandrel 2 and the extension rod 16 extend into the mounting hole 5 from the bottom of the support seat 4, to install the support seat 4 on the base 1 and the measuring body, and cover the mounting position.

[0038] In the above embodiment, the top of the column structure 11 is provided with a locking piece 12, for locking the dial gauge 6 at the top end of the column structure 11, the locking piece 12 is provided with a through assembly hole, the top of the column structure 11 at least partially extends into the assembly hole from the bottom of the locking piece 12, to set the locking piece 12 on the column structure 11, the measuring rod 7 at least partially extends into the assembly hole and the mounting hole 5 in turn from the top of the locking piece 12, until the measuring head 8 abuts against the end portion of the extension rod 16, specifically, the locking piece 12 and the column structure 11 can be assembled in a threaded connection or clamping manner, which is not limited herein, the dial gauge 6 is installed on the column structure 11 of the support seat 4 through the locking piece 12, to ensure the stability of the structure.

[0039] In some embodiments, the inside of the locking piece 12 is provided with a mounting cavity, which is in communication with the assembly hole, and is further provided with an elastic piece 13, which is provided with a guide hole for the measuring rod 7 to pass through, and is used for guiding and positioning the measuring rod 7. The top of the columnar structure 11 extends into the assembly hole from the bottom of the locking piece 12 and abuts against the bottom of the elastic piece 13. The measuring head 8 extends into the assembly hole, the guide hole and the mounting hole 5 from the top of the locking piece 12 in sequence, and abuts against the end of the lengthening rod 16. The top of the columnar structure 11 extends into the assembly hole and the mounting cavity from the bottom of the locking piece 12 and abuts against the elastic piece 13. Specifically, the elastic piece 13 can provide buffering when the measuring rod 7 is lifted by the lengthening rod 16, so as to avoid damage or inaccurate measurement of the dial gauge 6 due to excessive force. At the same time, the measuring head 8 can also be prevented from entering the mounting cavity and colliding with the inside of the locking piece 12 to cause damage.

[0040] In the above embodiment, the hole diameter of the assembly hole gradually decreases towards the top of the elastic piece 13 until it is the same as the diameter of the measuring rod 7. Specifically, the elastic piece 13 matches the mounting cavity, and the elastic piece 13 can be provided in a conical structure. The hole diameter of the guide hole is the same as the diameter of the measuring rod 7. When the measuring rod 7 extends into the assembly hole and the guide hole, the extension of the measuring rod 7 is guided and positioned by the guide hole, so as to ensure that the measuring rod 7 can extend into the mounting hole 5 until it abuts against the end of the lengthening rod 16. At the same time, after the locking piece 12 installs the dial gauge 6 on the columnar structure 11, the assembly hole can also ensure that the dial gauge 6 does not tilt, so as to ensure subsequent calibration and measurement operations.

[0041] In the present embodiment, the support seat 4 and the base 1 are connected by fasteners 14. Specifically, the fasteners 14 can be bolts or screws, etc., which are not limited herein.

[0042] In summary, in the bearing thickness gauge provided by the application, the standard block 9 is placed on the platform, the gauge is placed above the standard block 9, the standard block 9 enters the work station from the bottom of the base 1, the standard block 9 abuts against the movable seat 3, the standard block 9 lifts up the movable seat 3, the movable seat 3 moves vertically on the mounting position towards the direction of the support seat 4, the mandrel 2 and the extension rod 16 are lifted up in the mounting hole 5, the extension rod 16 lifts up the measuring rod 7, the pointer position of the dial gauge 6 is adjusted, the gauge is calibrated, then the bearing 15 to be measured is placed on the platform, the gauge is placed above the bearing 15 to be measured, the bearing 15 to be measured enters the work station from the bottom of the base 1, the bearing 15 to be measured abuts against the movable seat 3, the bearing 15 to be measured lifts up the movable seat 3, the movable seat 3 moves vertically on the mounting position towards the direction of the support seat 4, so that the mandrel 2 and the extension rod 16 are lifted up in the mounting hole 5, the measuring rod 7 is lifted up, the pointer position of the dial gauge 6 changes, the reading of the dial gauge 6 is read, the sum of the reading of the dial gauge 6 and the thickness of the standard block 9 is the thickness of the bearing 15 to be measured, the thickness of the bearing 15 can be directly measured, and the measurement accuracy is improved.

[0043] The above embodiments only exemplarily illustrate the principles and effects of the application, and are not used to limit the application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the application. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical thought of the application should be covered by the claims of the application.

Claims

1. A bearing thickness gauge, characterized by, The utility model relates to a bearing detection device, including: a base, which is sequentially provided with a mounting position and a working position in a vertical direction, the working position is used for accommodating a bearing to carry out detection, the working position and the mounting position are communicated with each other and vertically penetrate the base; a measuring body provided on the base, the measuring body includes a mandrel and a movable seat, the movable seat is arranged on the mounting position, the movable seat can move in the vertical direction on the mounting position, the mandrel is arranged in the middle of the movable seat, the mandrel at least partially extends from the mounting position, and an extension rod is arranged on the mandrel; a supporting seat provided on the base, the middle of the supporting seat has a penetrating mounting hole, the supporting seat passes through the mandrel and covers the mounting position through the mounting hole, the mounting hole is communicated with the mounting position, the extension rod extends into the mounting hole, the mandrel at least partially extends into the mounting hole, and the supporting seat has a spacing with the movable seat; a dial gauge provided on the supporting seat, the dial gauge has a measuring rod, a measuring head is arranged at the bottom end of the measuring rod, the measuring rod extends into the mounting hole from the top of the supporting seat until the measuring head abuts against the end of the extension rod.

2. The bearing thickness gauge of claim 1, wherein, A step structure is formed between the side wall of the mounting position and the side wall of the working position, and the step structure is used for limiting the movable seat.

3. The bearing thickness gauge of claim 1, wherein, The sum of the height of the part of the mandrel extending into the mounting hole and the height of the extension rod is less than the height of the middle of the supporting seat.

4. The bearing thickness gauge of claim 1, wherein, The height of the movable seat is less than the depth of the mounting position.

5. The bearing thickness gauge of claim 1, wherein, The middle of the supporting seat is a column structure, and the mounting hole penetrates from the top to the bottom of the column structure.

6. The bearing thickness gauge of claim 5, wherein, A locking piece is arranged at the top of the column structure, the locking piece is used for locking the dial gauge at the top end of the column structure, an assembly hole is arranged on the locking piece, the top of the column structure at least partially extends into the assembly hole from the bottom of the locking piece to be sleeved on the column structure, and the measuring rod at least partially extends into the assembly hole and the mounting hole from the top of the locking piece in sequence until the measuring head abuts against the end of the extension rod.

7. The bearing thickness gauge of claim 6 wherein, An installation cavity is arranged in the locking piece, the installation cavity is communicated with the assembly hole, an elastic piece is further arranged on the installation cavity, the elastic piece is provided with a guide hole, the guide hole is used for guiding and positioning the measuring rod, the top of the column structure enters the assembly hole and the installation cavity from the bottom of the locking piece and abuts against the bottom of the elastic piece, and the measuring head extends into the assembly hole, the guide hole and the mounting hole from the top of the locking piece in sequence until the measuring head abuts against the end of the extension rod.

8. The bearing thickness gauge of claim 7, wherein, The hole diameter of the assembly hole gradually decreases towards the top of the elastic piece until the hole diameter is the same as the diameter of the measuring rod.

9. The bearing thickness gauge of claim 7, wherein, The elastic piece is matched with the installation cavity.

10. The bearing thickness gauge of claim 1, wherein, The supporting seat and the base are connected through fasteners.

Images