CN220063390U - Detection device for outer ball cage of driving shaft - Google Patents

Abstract

The utility model discloses a detection device for an outer ball cage of a driving shaft, which comprises a driving piece and a first clamp, wherein the output end of the driving piece is connected with the first clamp and is used for outputting torque to the first clamp, the first clamp is used for fixing a lock nut, a hub bearing is sleeved on the outer side of the lock nut, a second clamp is used for fixing a standard sample piece of the outer ball cage, the outer ball cage is matched with the lock nut through a spline, and a detection unit is suitable for acquiring stress between the press-fit end surfaces of the outer ball cage and the hub bearing when the outer ball cage is in threaded fit with the lock nut. The detection device for the outer ball cage of the driving shaft can detect the torque of the outer ball cage in place and attached to the press-fit end face of the hub bearing, so that whether the designed spline interference is reasonable or not is identified, starting abnormal sound can be avoided, and batch problems of thread sliding, incomplete assembly and the like caused by the increase of the spline interference can be avoided.

Description

Detection device for outer ball cage of driving shaft

Technical Field

The utility model relates to the technical field of automobile part assembly detection, in particular to a detection device for an outer ball cage of a driving shaft.

Background

The driving shaft outer ball cage and the brake hub bearing are in spline fit with each other through the handle part to transmit torque, and the locking nut is used for fastening the outer ball cage and the brake hub bearing. In the related art, when a vehicle is an electric vehicle, the sudden change of moment torque is large in the moment of starting sudden acceleration or in the moment of driving sudden deceleration, so that creep abnormal sound of the inner pressing end surfaces of the outer ball cage of the driving shaft and the hub bearing can be caused, the gap is increased along with durable abrasion of a spline, and the creep abnormal sound is serious, so that the experience of a driver is influenced.

For the problem, in the related art, creep abnormal sound is eliminated by increasing the spline helix angle of the driving shaft and increasing the friction coating, but the spline fit is changed from transition to interference, the problem that the thread sliding teeth and even the outer ball cage cannot be attached to the press-fit end surface of the hub bearing can occur, and therefore, whether the outer ball cage meets the assembly technical requirement or not needs to be detected when the outer ball cage is taken off line.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides a detection device for the outer ball cage of the driving shaft, which can detect whether the assembled outer ball cage of the driving shaft and a brake hub bearing meet the assembly requirement.

According to the embodiment of the utility model, the detection device for the outer ball cage of the driving shaft comprises: the device comprises a driving piece and a first clamp, wherein the output end of the driving piece is connected with the first clamp and used for outputting torque to the first clamp, the first clamp is used for fixing a lock nut, a hub bearing is sleeved on the outer side of the lock nut, the second clamp is used for fixing a standard sample piece of an outer ball cage, the outer ball cage is matched with the lock nut through a spline, and the detection unit is suitable for acquiring stress between the outer ball cage and the press-fit end face of the hub bearing when the outer ball cage is matched with the lock nut through threads.

According to the detection device for the outer ball cage of the driving shaft, disclosed by the embodiment of the utility model, the torque of the outer ball cage attached to the press-fit end surface of the hub bearing in place can be detected, so that whether the designed spline interference is reasonable or not is identified, starting abnormal sound can be avoided, and batch problems of thread sliding, incomplete assembly and the like caused by increasing the spline interference can be avoided.

According to some embodiments of the utility model, the first clamp is movably mounted at the output end of the driving member.

According to some embodiments of the utility model, the first clamp is adapted to slidably engage the driving member in an axial direction of the lock nut.

According to the detection device for the outer ball cage of the driving shaft, which is provided by some embodiments of the utility model, the first clamp is fixedly sleeved on the outer side of the lock nut.

According to the detection device for the outer ball cage of the driving shaft of some embodiments of the present utility model, the first clamp and the second clamp are spaced apart in the axial direction of the lock nut.

According to the detection device for the outer ball cage of the driving shaft, the second clamp comprises a clamping piece and a positioning piece, the positioning piece is fixed on the clamping piece, and the standard sample piece of the outer ball cage is in limit fit with the positioning piece.

According to the detection device for the outer ball cage of the driving shaft, the positioning piece is configured as a profiling tool, and the profiling tool is profiled according to an inner cavity raceway of the outer ball cage.

According to some embodiments of the utility model, the detection unit is adapted to obtain the output torque of the driving member, and generate a torque-stress graph according to the output torque and the stress to which the outer cage is subjected.

According to some embodiments of the utility model, the detection device for the outer ball cage of the driving shaft further comprises a speed-reducing and torque-increasing device, wherein the speed-reducing and torque-increasing device is in power connection between the driving piece and the first clamp.

According to some embodiments of the utility model, the speed and torque reducing device is configured as a gear reducer.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic diagram of a detection device according to an embodiment of the present utility model;

fig. 2 is a schematic view of the lock nut, hub bearing and outer cage of fig. 1.

Reference numerals:

a detection device 100;

a driving member 10, a first jig 20, a second jig 30, a holding member 31, a positioning member 32;

a detection unit 40, a deceleration torque increasing device 50;

lock nut 60, hub bearing 70, outer cage 80.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

The following disclosure provides many different embodiments, or examples, for implementing different structures of the utility model. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present utility model provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the applicability of other processes and/or the use of other materials.

A detection apparatus 100 for an outer cage of a driving shaft according to an embodiment of the present utility model will be described with reference to fig. 1 to 2.

As shown in fig. 1 to 2, a detection apparatus 100 for an outer ball cage of a drive shaft according to an embodiment of the present utility model includes: the driving piece 10 and the first clamp 20, the output end of the driving piece 10 is connected with the first clamp 20 and is used for outputting torque to the first clamp 20, the first clamp 20 is used for fixing the lock nut 60, a hub bearing 70 is sleeved on the outer side of the lock nut 60, the second clamp 30 is used for fixing a standard sample piece of the outer ball cage 80, the outer ball cage 80 and the lock nut 60 are in spline fit, the detection unit 40 is used for obtaining stress between the outer ball cage 80 and the press-fit end face of the hub bearing 70 when the outer ball cage 80 and the lock nut 60 are in threaded fit, and the detection unit 40 is used for obtaining the stress between the outer ball cage 80 and the press-fit end face of the hub bearing 70.

In order to avoid the serious creep abnormal sound caused by the increase of the clearance after the durable abrasion of the spline, the creep abnormal sound can be eliminated by adopting a method of increasing the spiral intersection of the spline of the driving shaft and increasing the friction coating, so that the spline matching relationship between the outer ball cage 80 and the lock nut 60 is changed from transition matching to interference matching.

Therefore, after the spline fit relation between the outer ball cage 80 and the lock nut 60 is changed into interference fit, a new assembly problem can be generated, the first clamp 20 and the second clamp 30 of the detection device 100 can fix the lock nut 60 and the outer ball cage 80, the driving piece 10 can output torque to the lock nut 60 through the first clamp 20, the screw engagement of the lock nut 60 and the outer ball cage 80 converts the torque into axial force, the axial force pulls the outer ball cage 80 outwards to overcome the spline interference, and thus, by detecting the stress between the press-fit end surfaces of the outer ball cage 80 and the hub bearing 70 at the moment, whether the designed spline interference is reasonable or not can be identified, starting abnormal sound can be avoided, and batch problems such as screw sliding, improper assembly and the like caused by the increase of the spline interference can be avoided.

For example, the first clamp 20 is connected to the output end of the driving member 10, such that the output end of the driving member 10 can output torque to the first clamp 20 when rotating, and the torque output to the first clamp 20 by the driving member 10 can be output to the lock nut 60 through the first clamp 20 after the lock nut 60 is fixed by the first clamp 20, the lock nut 60 is cooperatively connected to the outer ball cage 80 through the spline, such that when the torque is transmitted to the lock nut 60, the lock nut 60 can apply torque conversion axial force to the outer ball cage 80, such that a stress is generated when one side of the outer ball cage 80 abutting against the bearing press-mounting end surface is subjected to the axial force, and the detecting unit 40 can detect the stress, and determine whether the interference of the spline of the outer ball cage 80 and the spline of the lock nut 60 is reasonable.

According to the detection device 100 for the outer ball cage of the driving shaft, disclosed by the embodiment of the utility model, the torque of the outer ball cage 80 attached to the press-fit end surface of the hub bearing 70 in place can be detected, so that whether the designed spline interference is reasonable or not is identified, starting abnormal sound can be avoided, and batch problems of thread sliding, incomplete assembly and the like caused by increasing the spline interference can be avoided.

In some embodiments, as shown in fig. 1-2, a first clamp 20 is movably mounted to the output end of the driver 10.

Therefore, after the output end of the driving piece 10 is connected, the first clamp 20 can also adjust the position of the first clamp, so that the first clamp 20 can drive the lock nut 60 to adjust the position together after the lock nut 60 is fixed, the torque output by the driving piece 10 can be better transmitted to the lock nut 60 through the first clamp 20, and the interference of the assembled spline of the outer ball cage 80 and the lock nut 60 can be better detected.

In some embodiments, as shown in fig. 1-2, the first clamp 20 is adapted to slidably engage the driver 10 in an axial direction of the lock nut 60.

Therefore, the first clamp 20 can slide along the axial direction of the lock nut 60, so that after the lock nut 60 is fixed by the first clamp 20, the lock nut 60 can be driven to move along the axial direction of the lock nut 60, and the first clamp 20 can drive the outer ball cage 80 matched with the lock nut 60 to abut against the second clamp 30, so that the second clamp 30 can fix the outer ball cage 80, and interference of the assembled spline of the outer ball cage 80 and the lock nut 60 is detected.

In some embodiments, as shown in fig. 1-2, the first clamp 20 is fixedly sleeved outside the lock nut 60.

Therefore, when the lock nut 60 is fixed by the first clamp 20, the lock nut 60 is sleeved with the first clamp 20, so that the lock nut 60 can be wrapped by the first clamp 20, a better fixing effect is achieved, torque of the first clamp 20 can be transmitted to the lock nut 60 better, shielding of a threaded hole of the lock nut 60 is avoided, and the lock nut 60 can be meshed with the outer ball cage 80 in a threaded mode.

In some embodiments, as shown in fig. 1-2, the first clamp 20 and the second clamp 30 are spaced apart in an axial direction of the lock nut 60.

Thus, the first clamp 20 and the second clamp 30 are spaced apart to enable the assembly of the outer ball cage 80 and the lock nut 60 to be placed between the first clamp 20 and the second clamp 30, so that after the lock nut 60 is fixed by the first clamp 20, the assembly can be driven to slide along the axial direction of the lock nut 60, and the second clamp 30 can prop against the outer ball cage 80 and the second clamp 30 can fix the outer ball cage 80.

In some embodiments, as shown in fig. 1-2, second clamp 30 includes a clamp 31 and a retainer 32, wherein retainer 32 is secured to clamp 31 and the standard sample of outer cage 80 is in positive engagement with retainer 32.

Therefore, the positioning piece 32 can be in limit fit with the standard sample piece of the outer ball cage 80, so when the second clamp 30 is used for fixing the outer ball cage 80, the outer ball cage 80 can be better fixed through the positioning piece 32, so when the first clamp 20 is used for transmitting torque to the lock nut 60, the outer ball cage 80 cannot shake, the clamping piece 31 can be used for fixing the positioning piece 32, so that the fixing effect of the second clamp 30 on the outer ball cage 80 is guaranteed, and the outer ball cage 80 cannot easily fall off from the second clamp 30 when interference of assembled splines of the outer ball cage 80 and the lock nut 60 is detected.

In some embodiments, the positioning member 32 is configured as a profiling tooling that is profiled according to the inner cavity raceway of the outer cage 80.

Therefore, the profiling tool can extend into the outer ball cage 80 to fix the outer ball cage 80, meanwhile, the profiling tool can be attached to an inner cavity roller path of the outer ball cage 80 to further improve the fixing effect of the second clamp 30 on the outer ball cage 80, and meanwhile, the stress condition of the outer ball cage 80 can be simulated more truly, so that the detection result of the detection device 100 on the assembly parts of the outer ball cage 80 and the hub bearing 70 is more accurate, and whether the outer ball cage 80 meets the whole vehicle assembly requirement can be judged better.

In some embodiments, as shown in fig. 1-2, the detection unit 40 is adapted to obtain an output torque of the driver 10 and generate a torque-stress graph based on the output torque and the stress experienced by the outer cage 80.

Thus, the detecting unit 40 generates a torque-stress chart after acquiring the stress applied to the outer ball cage 80, so as to judge whether the interference of the spline after the outer ball cage 80 and the hub bearing 70 are assembled is reasonable according to the chart.

In some embodiments, as shown in fig. 1-2, a speed and torque increasing device 50 is further included, and the speed and torque increasing device 50 is dynamically connected between the driving member 10 and the first clamp 20.

It should be noted that, the driving member 10 may be configured as an output motor, where if an output shaft of the output motor is directly connected to the first clamp 20, the rotation speed of the first clamp 20 is too fast, so that the lock nut 60 is not easy to be fixed, and the torque output by the output motor to the lock nut 60 through the first clamp 20 cannot reach the required value, so that a speed-reducing and torque-increasing device 50 is disposed between the output motor and the first clamp 20, the speed-reducing and torque-increasing device 50 can reduce the rotation speed of the first clamp 20, and can increase the torque transmitted to the first clamp 20, so that the torque can reach the required value.

Thus, the rotation speed of the first clamp 20 can be reduced by the speed reducing and torque increasing device 50, so that the rotation speed of the first clamp 20 can be more accurate when the lock nut 60 is fixed, and the torque transmitted to the first clamp 20 can be increased by the speed reducing and torque increasing device 50, so that the torque received by the lock nut 60 can reach a required value.

In some embodiments, reduction torque device 50 is configured as a gear reducer.

Thereby, the gear reducer is compact in structure, the entire volume of the detection device 100 can be reduced, and the large and small gears of the gear reducer are not distributed in the axial direction, so that the axial dimension of the gear reducer can be reduced, and the arrangement of the detection device 100 is more flexible.

According to the embodiment of the utility model, the detection device 100 for the driving shaft outer ball cage comprises a driving piece 10, a first clamp 20, a second clamp 30, a detection unit 40 and a speed and torque increasing device 50, when the outer ball cage 80 and a bearing hub assembly are detected, the first clamp 20 can move along the axial direction of the lock nut 60 so as to fix the lock nut 60 to the first clamp 20, after the fixing is finished, the first clamp 20 moves along the axis of the lock nut 60 so as to fix the second clamp 30 to the outer ball cage 80, the driving piece 10 amplifies the torque and then transmits the torque to the lock nut 60 through the first clamp 20, the lock nut 60 can convert the torque into an axial force to act on the outer ball cage 80, the detection unit 40 can detect the stress of the press-fit end surfaces of the outer ball cage 80 and the hub bearing 70, meanwhile, the detection unit 40 can acquire the output torque of the driving piece 10 so as to generate a torque-stress chart, after the detection unit 40 is installed, the nut lock pile is set as a motor loading torque maximum value according to the whole car required, whether the end surface of the outer ball cage 80 is drawn to the press-fit end surface of the hub bearing 70, and the interference fit is carried out by the motor, and the problem of whether the torque is increased by the interference fit to the spline size can be avoided due to the fact that the problem of the thread size cannot be reasonably increased is avoided, and the problem is avoided.

In the detection device 100 of the present utility model, when the hub bearing 70 is used for detection, the sample piece with the minimum practical tooth space width is selected as the lower limit of the internal spline span pitch design value, and the driving shaft outer ball cage 80 is the sample piece which is passed through the stop gauge and the hub simulator and is detected to be qualified by the screw thread gauge, so that the detection result of the outer ball cage 80 in the batch is more accurate by detecting the assembly part of the qualified outer ball cage 80 matched with the hub bearing 70 with the minimum practical tooth space width, namely, whether the outer ball cage 80 in the batch meets the assembly requirement of the whole vehicle can be judged, and meanwhile, when the outer ball cage 80 in the batch is detected, the first and last outer ball cages 80 in the batch can be selected for detection.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A detection device for an outer ball cage of a drive shaft, comprising:

the output end of the driving piece is connected with the first clamp and used for outputting torque to the first clamp, the first clamp is used for fixing a lock nut, and a hub bearing is sleeved on the outer side of the lock nut;

the second clamp is used for fixing a standard sample piece of the outer ball cage, and the outer ball cage is matched with the lock nut through a spline;

and the detection unit is suitable for acquiring the stress between the outer ball cage and the press-fit end surface of the hub bearing when the outer ball cage and the locking nut are in threaded fit.

2. The device for detecting an outer ball cage on a drive shaft according to claim 1, wherein the first clamp is movably mounted to an output end of the driving member.

3. The drive shaft outer ball cage detection device of claim 2, wherein the first clamp is adapted to slidably engage the drive member in an axial direction of the lock nut.

4. The device for detecting an outer ball cage of a driving shaft according to claim 1, wherein the first clamp is fixedly sleeved on the outer side of the lock nut.

5. The drive shaft outer ball cage detection device according to claim 1, wherein the first clamp and the second clamp are spaced apart in an axial direction of the lock nut.

6. The device for detecting an outer ball cage of a drive shaft according to claim 1, wherein the second clamp comprises a clamping member and a positioning member, the positioning member is fixed to the clamping member, and the standard sample member of the outer ball cage is in limit fit with the positioning member.

7. The device for detecting an outer cage of a drive shaft according to claim 6, wherein the positioning member is configured as a profiling tool that is profiled according to an inner cavity raceway of the outer cage.

8. The device for detecting an outer cage of a driving shaft according to claim 1, wherein the detecting unit is adapted to obtain an output torque of the driving member and to generate a torque-stress graph based on the output torque and a stress to which the outer cage is subjected.

9. The drive shaft outer ball cage detection device of any one of claims 1-8, further comprising a speed and torque increasing device in dynamic communication between the drive member and the first clamp.

10. The device for detecting an outer ball cage on a drive shaft according to claim 9, wherein the speed and torque reducing device is configured as a gear reducer.