JPH0541936B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention is a method for inspecting a drive shaft that is equipped with an axial sliding joint at one end and a constant velocity joint at the other end and inspects the quality of the assembled state of the drive shaft. The present invention relates to a method and an apparatus thereof.

(Prior art) A shaft that transmits driving force, for example, connects the wheels of a car to the transmission in the case of a FF car, or the differential gear in the case of an independent suspension system of a FR car, and connects it to the transmission side, etc. A driveshaft that swingably transmits the rotational driving force from the drive shaft to the wheels via a suspension and swings the wheels via a steering shaft, etc. is equipped with a constant velocity joint on the transmission side, and is equipped with a constant velocity joint on the transmission side. An axial sliding joint is provided on the end wheel side to smoothly transmit rotational driving force following the vertical movement of the vehicle body and the rocking motion caused by steering.

Conventionally, the drive shaft joints have been inspected for each joint. Regarding the inspection of the constant velocity joint itself, the method described in Japanese Utility Model Application Laid-Open No. 62-201631 is known. However, since the connecting shaft is slidable on the inner circumferential surface of the outer race, it is not possible to connect the axial sliding joint itself in a predetermined position before assembly, and it is difficult to inspect the axial sliding joint itself. Because of this, the test results are not uniform.

In addition, in order to inspect the drive shaft more accurately, the axial sliding joint and the constant velocity joint should be assembled into the drive shaft, and the inspection should not be performed with each joint swinging at its center of swing. This has the disadvantage that it is not possible to determine whether the drive shaft is good or bad in the installed state, and it is not possible to inspect the state when it is installed in an actual vehicle.

(Problems to be Solved by the Present Invention) The present invention eliminates such conventional inconveniences, and incorporates an axial sliding joint and a constant velocity joint into the drive shaft so that the drive shaft rotates in a state similar to that mounted on an actual vehicle. It is an object of the present invention to provide a drive shaft inspection method and apparatus that can accurately detect changes in torque and inspect whether the drive shaft is in an assembled state.

(Means for Solving the Problems) In order to achieve the above object, the inspection method of the present invention inspects a drive shaft that is equipped with an axial sliding joint at one end and a constant velocity joint at the other end. At this time, the constant velocity joint is held in a driven position based on the axial sliding joint, and the axial sliding joint is swung around its center of rotation while applying a driving force to the axial sliding joint. The present invention is characterized in that the change in rotational torque during rocking is detected to inspect the quality of the installed state of the drive shaft.

Further, the present invention provides the testing method of the above invention, comprising:
The present invention is characterized in that a load is applied to the constant velocity joint side and changes in rotational torque during rocking are detected to inspect the quality of the assembled state of the drive shaft.

Further, the drive shaft inspection device of the present invention is a device for inspecting the quality of the installed state of a drive shaft having an axial sliding joint at one end and a constant velocity joint at the other end, and is movably installed on a machine base. A rotary drive means for the drive shaft and a rotary torque detecting means connected thereto are provided on the table, and a drive holding means is connected to the rotary torque detecting means and rotatably holds the axial sliding joint of the drive shaft. a driven holding means for holding the constant velocity joint on the same axis of the drive shaft; and a swinging means for swinging the table around a swinging center of the axial sliding joint. It is characterized by:

Further, the present invention provides an inspection apparatus according to the invention, which includes:
The present invention is characterized in that a load applying means is provided for applying a load to the driven holding means that holds the constant velocity joint.

(Function) According to this step, the inspection method of the present invention rotates the drive shaft by driving the axial sliding joint side with the axial sliding joint and constant velocity joint incorporated in the drive shaft. let At this time, the axial sliding joint is rotated at the center of the axial sliding joint in a manner similar to the rocking of the joint that occurs when the joint is mounted on an actual vehicle. The change in torque is detected to check whether the drive shaft is installed properly.

Further, in the present invention, a load is further applied to the other end of the constant velocity joint, and changes in the rotational torque of the axial sliding joint are detected in a manner similar to that when mounted on an actual vehicle. Inspect whether the drive shaft is assembled properly.

Further, in the inspection device of the present invention, with such a configuration, the axial sliding joint at one end of the drive shaft is held by the drive holding means, and the constant velocity joint at the other end is held by the driven holding means. The rotational drive means rotates the axial sliding joint via the rotational torque detection means, and the swinging means swings the table about the rocking center of the axial sliding joint. Changes in the rotational torque of the axial sliding joint at this time are detected by the rotational torque detection means, and the quality of the installed state of the drive shaft is inspected.

Furthermore, in the present invention, a load is applied to the constant velocity joint by the load applying means, and a change in the rotational torque of the axial sliding joint is detected by the rotational torque detection means to inspect the quality of the assembled state of the drive shaft. do.

(Example) An apparatus for implementing the present invention will be described in detail below with reference to FIGS. 1 and 2.

Figure 1 is an explanatory cross-sectional view, Figure 2 is the − of Figure 1.
FIG.

This implementation device is an inspection device for a drive shaft Z that connects the wheels of an automobile and a transmission or differential gear, and is a device for inspecting a drive shaft Z that connects the wheels of an automobile with a transmission or a differential gear. A drive side table 3 is provided which can freely swing around a swing support shaft 2. A lateral movement table 4 is provided with a driven side table 6 located opposite to the driving side table 3 on the machine base 1, and is capable of moving forward or backward. It is provided so as to be swingable around a swing support shaft 5 aligned with the center. The drive-side and driven-side tables 3 and 6 are arranged around arc-shaped rails 7 and
Rollers 9 and 10 that roll on 8 are provided.

A drive-side swing cylinder 11, which is a swing means for swinging the drive-side table 3 around the swing support shaft 2, is swingably provided below the drive-side table 3 on the machine base 1, and The cylinder 11 is provided with a link 12 which is connected to the swing support shaft 2, swings the drive side table 3, and causes the drive side table 3 to roll on the rail 7 by the rollers 9. A clamping device 13 is provided on the top of the drive side table 3 as a drive holding means for keeping the center of swing of the axial sliding joint X aligned with the tilting support shaft 2. A torque meter 14 which is a rotational torque detection means coaxially connected to X
A drive motor 18 is provided as a rotational drive means for driving the torque meter 14 via a speed reducer 15, a belt pulley 16, and a belt 17.

A driven side swing cylinder 19 that swings the driven side table 6 around the swing shaft 5 on the horizontal movement table 4
is swingably provided below the driven side table 6 on the transverse table 4, and the driven side swing cylinder 19 is connected to the swing support shaft 5 to swing the driven side table 6 and move the roller 10 on the rail 8. Link 20 rolled by
Further, a feed cylinder 21 for moving the transverse table 4 forward or backward is provided on the machine base 1.
A bearing 23 is provided on the upper part of the driven side table 6 as a driven holding means for aligning the center of swing of the constant velocity joint Y with the swinging support shaft 5 and holding it via the mounting shaft 22, and the mounting shaft 22 is a load applying means. An induction clutch/brake 24, a belt pulley 25 and a belt 26
connected via.

Next, the operation of the implementation device will be explained with reference to FIGS. 1 and 2.

First, attach the axial sliding joint X to the drive shaft Z.
The lateral movement table 4 is assembled with the constant velocity joint Y and
The clamping device 1 of the driving side table 3 is moved forward.
3 and the bearing 22 of the driven table 6 to hold it in a predetermined position. Next, the drive motor 18 is driven to rotate the drive shaft Z. This rotates the constant velocity joint Y held by the bearing 22 of the driven table 6, and this rotation is transmitted from the mounting shaft 22 to the induction clutch/brake 24 via the belt 25 and belt pulley 26. At this time, a braking torque is applied by the electromagnetic induction action of the induction clutch/brake 24 to apply a load to the constant velocity joint Y side.

When the drive shaft Z is in a rotating state, the drive-side swing cylinder 11 is pushed out to swing the link 12. The link 12 swings about the swing support shaft 2 so that the rollers 9 of the drive-side table 3 roll on the rails 7, thereby swinging the drive-side table 3.
At the same time, push out the driven side swing cylinder 19,
Similarly, the driven table 6 is swung around the swiveling support shaft 5 as a fulcrum. This allows the driveshaft Z
, only the fixed sides of both joints X and Y are swung without changing their positions, and the change in torque generated at this time is detected by the torque meter 14.

After detecting the generated torque, both swing cylinders 11,1
9 is compressed and both tables 3 and 6 are swung back to their original positions.

Here, in this embodiment, an induction clutch/brake 24 is used as a load applying means, but even if mechanical means or hydraulic means are used, the effects of the present invention cannot be prevented.

In addition, in this embodiment, the driven side swing table 6 can be moved forward or backward by the lateral movement table 4, so that drive shafts Z of different lengths can be inspected and installation is easy.

(Effects) As is clear from the above description, the present invention applies a driving force to a drive shaft with an axial sliding joint and a constant velocity joint incorporated with the axial sliding joint as a reference, A method for inspecting a drive shaft that allows the drive shaft to be swung at the center of oscillation of an axial sliding joint, detecting changes in rotational torque in the same state as when installed in an actual vehicle, and inspecting the quality of the installed state of the drive shaft. can be provided.

In addition, by applying a load to the constant velocity joint and rotating the axial sliding joint, and swinging the axial sliding joint, changes in rotational torque can be detected in the same state as when installed on an actual vehicle. Thus, it is possible to provide a drive shaft inspection method that can inspect the quality of the drive shaft in its assembled state.

Further, the axial sliding joint at one end of the drive shaft is held in a predetermined position by the drive holding means, the constant velocity joint at the other end is held by the driven holding means, and the axial sliding joint is driven by the driving means. At the same time, the drive-side table is swung around the center of oscillation of the axial sliding joint by the tilting means, and changes in the generated torque at this time are detected by the rotational torque detection means to check whether the drive shaft is assembled properly. It is possible to provide a drive shaft inspection device that can perform

In addition, in the drive shaft inspection device described above, a load is applied to the constant velocity joint by the load applying means, and changes in the generated torque are detected when the constant velocity joint is brought close to the state in which it is mounted on an actual vehicle, thereby inspecting the quality of the installed state of the drive shaft. It is possible to provide a drive shaft inspection device that can perform

[Brief explanation of the drawing]

FIG. 1 is a plan view of an apparatus for implementing the present invention, and FIG. 2 is an explanatory sectional view of FIG. 1. DESCRIPTION OF SYMBOLS 1... Machine base, 3... Table, 11... Swinging means, 13... Drive holding means, 14... Rotating torque detection means, 18... Driving means, 23... Drive holding means, 24... Load Providing means, X... axial sliding joint, Y... constant velocity joint, Z... drive shaft.

Claims (1)

[Claims] 1. When inspecting a driveshaft with an axial sliding joint at one end and a constant velocity joint at the other end in the assembled state, the constant velocity joint is compared with the axial sliding joint as a reference. The axial sliding joint is held in place, and the axial sliding joint is swung around its center of oscillation while applying a driving force to the axial sliding joint, and changes in the rotational torque during the oscillation are detected and the drive shaft is rotated. A drive shaft inspection method characterized by inspecting the quality of a drive shaft in an assembled state. 2. The method for inspecting a drive shaft according to claim 1, wherein a load is applied to the constant velocity joint and a change in rotational torque during rocking is detected to inspect the quality of the assembled state of the drive shaft. 3. In a device for inspecting the quality of the installed state of a drive shaft having an axial sliding joint at one end and a constant velocity joint at the other end, a rotary drive means for the drive shaft is mounted on a table movably provided on the machine base. and a rotational torque detection means connected thereto, a drive holding means connected to the rotational torque detection means and rotatably holding the axial sliding joint of the drive shaft, A drive shaft inspection device characterized in that a driven holding means for holding a quick joint is provided on the machine base, and a swinging means for swinging the table about the swing center of the axial sliding joint is provided. . 4. The drive shaft inspection device according to claim 3, further comprising load applying means for applying a load to the driven holding means that holds the constant velocity joint.