JPS59208223A - Vibration absorbing method for shaft with flexible coupling - Google Patents

Abstract

PURPOSE:To prevent the car body from generating vibration by a method wherein the second shaft portion is displaced toward the location where the axis of the second shaft crosses the axis of the first shaft portion during the rotation of the second shaft portion due to the rotation of the first shaft portion, then the displacement of the second shaft portion is eliminated. CONSTITUTION:In case that the first shaft portion 12 supported at two reference points 50, 52 is rotated with a motor 54, when the axis O2 of the second shaft portion 14 is displaced from the axis O1 of the shaft portion 12, the shaft portion 14 is rotated in circular motion with radius becoming larger as approaches toward the free end thereof, then the deflection by the circular motion is removed by placing a dial gauge 56 on the external periphery surface of the shaft portion 14. A displacement member 60 is provided with a pair of rollers 58, the rollers arranged with the space in horizontal direction are made flush with the external periphery surface of the shaft portion 14, then the shaft portion 14 is displaced as the axes O1, O2 cross each other, the displacement is removed after fixed time rotation, finally, the rotation with the motor 54 is stopped.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for correcting run-out of a shaft of a flexible compression ring.

For a shaft in which two shaft parts are connected by a flexible coupling, such as a propeller shaft located between an automobile transmission and a differential gear, the flexible force and compression generated in the shaft must be determined prior to use of the shaft. The deflection (misalignment of the center) is removed so that the two shaft parts in the connected state become coaxial. In order to eliminate this runout, conventionally, one shaft part is fixed, and a force in a direction that offsets the runout is applied to the other shaft part, which deviates from the extension of the axis of the shaft part due to the runout of the flexible compling. In addition,
This force deforms the flexible camp ring.

However, since flexible couplings are made of an elastic material such as rubber reinforced with cords, JiD
Note 13: In only one product, the compatibility between the cord and the cord or the coat and the rubber was poor, and the amount of runout returned over time after the runout operation. As a result, the amount of deflection may exceed the standard value.For example, when a propeller shaft is installed in a car and the vehicle is running, the flexible coupling may be difficult to operate. This caused a large amount of torque to be generated, which was one of the causes of vibration in the car body when driving at low speeds.

Therefore, the object of the present invention is to code and/or
To provide an 'I:l+' deflection method equipped with a flexible coupling capable of reducing the amount of restoration of deflection after deflection by forcibly connecting a cord and a comb.

The present invention is a saw method for removing the runout of a shaft in which the first and second shaft portions are made of JB Gi by flexible force and pulling, and the first shaft portion is supported with a rotational capacity of 1iT,
The first shaft portion is rotated to rotate the shaft portion of the f52, and during this rotation, the second shaft portion is rotated to the ! of the moving portion. +
The method includes displacing the Il line in a direction intersecting the axis of the first IIi+ portion, and then removing the displacement.

The present invention also provides a method for removing runout of a shaft formed by connecting first and second shaft portions by a flexible coupling, wherein the first shaft portion is rotatably supported, and the first shaft portion is rotatably supported.
to rotate the second shaft portion, and during this rotation, displace the second 611 portion in a direction in which the axis of the shaft portion intersects the axis of the first shaft portion I- 1. After that, removing the displacement and stopping the rotation, displacing the second shaft portion in a direction in which the axis of the shaft portion intersects the axis of the first shaft portion, and then removing the displacement. .

For example, the first shaft part is connected to an electric motor and rotated, and this rotation is transmitted to the second shaft part through a flexible printer to rotate it, and during this rotation, the second shaft part is connected to the second shaft part. is displaced in a direction that intersects the axis of the first shaft portion, the second shaft portion rotates approximately at the center of the flexible coupling and its axis is inclined relative to the axis of the first shaft portion. Since the flexible coupling rotates in this state, the deformation applied to the flexible coupling gradually shifts in the circumferential direction and extends over the entire circumference. Moreover, since this deformation is applied repeatedly, it produces the same result as vibrating the flexible coupling, and the strain remaining in the flexible coupling can be removed. Therefore,
The coat and the cord and/or the cord and the rubber are sufficiently soaked and are further free from distortion, so that the recovery of the runout after the runout can be reduced to a level that is unlikely to be a counterfeit.

If the runout still remains after the above-mentioned one operation, the second or second 11 can be used to repeat the rotation operation.
After removing the displacement of the w11+ portion and stopping the rotation, change the second 1111] portion so that the axis of the shaft portion is lk of the first shaft portion.
It can be displaced in a direction intersecting the l+ line.

Embodiments of the present invention will be described below with reference to the drawings.

The present invention is a method for reducing the deflection of a shaft 10 by 1 inch as shown in FIG.
Equipped with 4Sl+ lθζshi diagram, L± in Maki u of i\,
This is an automobile propeller shaft. The Second Old Man II Fj
The spline hole 15 provided in the R portion 14 is connected to the spline 441+18 of the transmission (not shown), and the flange 13 of the first shaft portion 12 is connected to the differential gear (not shown). Combine +lib 20 + on the side,
' With the first shaft portion 12 rotatably supported by a center bearing 24 attached to the vehicle body 22, the propeller shaft is put into use and the 1! ! Transmits J rotation torque to the differential gear device.

Flexible Camp Ring 161 Cord 1ζ゛28 and this cord 2 wound many times so as to straddle Okara 26
As shown in FIG. 2, the collar 26i±6in ih The first and second shaft parts 12, 14, on the other hand, are provided with a yoke 32 having three equally spaced arms. .1st!1
11 The yoke 32 of the section 12 is attached to the end of every other collar 26 on one side of the flexible compling 16, and the second
The yoke 32 of the li11 portion 14 is brought into contact with the end of every other collar 26 other than the collar 26 on the other side of the flexible coupling 16, and the holt 34 passing through the yoke 32 and the collar 26 is connected to the yoke 32 of the flexible coupling 16. 36 screwed together,
The first and second shaft portions 12.14 are connected to the flexible coupling 16, and the first and second shaft portions 12.1
4 are interconnected via flexible couplings 16. Additionally, a pin 38 is provided axially protruding from the center of the first shaft portion 12 and has a hole 40 rotated around the pin 38, and a spherical surface 43 provided in the sleeve 42 of the second shaft portion 14. A hole joint 44 is formed by this. With the above configuration, the first and second shaft portions 1
2.14 is the axis 0.2 of the first shaft portion 12. and Mu'52
+l+ b of the shaft portion 14 of +l+ b O2 and the flexible cup can be rotated about the center, and furthermore, it can be displaced in the circumferential direction in the direction of the Ql+ line force.

When the shaft 10 is assembled into the car, the shaft of the first shaft portion 12! ! When there is a runout between 0□ and the 4111 line 02 of the second shaft portion 14, the flexible coupling 16 rotates forcibly during the rotation of ←l+1.0, and the resulting strain When a car is running at low speeds, the force causes large vibrations.

4111 line 01 of the first shaft portion 12 and the second shaft portion 14
The runout that occurs between the axis 02 and the flexible coupling 16 is caused by the flexible coupling 16. Therefore, the present invention eliminates the runout by forcibly forming the cord and the coat and/or the cord and rubber of the flexible coupling 16.

First, as shown in FIG.
Rotatably support +-'+. In the example shown in FIG. 14, the first shaft portion 12 has two axially spaced reference points 50.
．． 52 and is rotatable. the result,
The second shaft portion 14 cantilevers from the reference point 50 . The flange 13 of the first shaft portion 12 is connected to the flange 55 of the electric motor 54 .

Next, the first shaft portion 12 is rotated 11i by the electric motor 54. This rotation causes the second shaft portion 14 to be rotated via the flexible force, the pull 16. In this case, if the axis 02 of the second shaft portion 14 is also twisted along the lines 4 to 11 of the first ikl+ portion 12, the second shaft portion 14 will rotate more as it approaches the free end = la t\ Since the shaft moves in a circular motion, the tire gauge 56 is applied to the outer peripheral surface of the second shaft portion 14, and the pointer indicates the presence or absence of runout from the reading of the 1] height, and if there is any runout, remove the runout. . - The outer peripheral surface of the second 611 portion 14 is circular with its axis 02 as the center. Therefore, as shown in FIG. 4, the roller 58 of the displacement member 60 is provided with a pair of rollers 58 spaced apart from each other in the horizontal direction.
guess. In this state, the displacement member 6θ is moved in the to direction so that the axis 02 of the second shaft portion 14 is aligned with the axis 0 of the first shaft portion 12. The second shaft portion 14 is displaced so as to intersect with the second shaft portion 14 . As a result, the second shaft portion 14 is held in a state in which its axis line is inclined with respect to the II:lt line of the first shaft portion 12, as shown by the imaginary line, and in this state, the second shaft portion 14
rotates around the center O of the flexible coupling 16, so the flexible coupling 1
The deformation given to 6 moves sequentially in the circumferential direction and covers the entire circumference. In other words, the deformation imparted to the flexible compacting ring 16 in this case is brought about by a motion similar to the i2 motion imparted to the object when it is ground with a pestle.

After the four-chip portion 14 of the ff 52 is displaced and rotated for a certain period of time, this displacement is removed and the rotation by the electric motor 54 is stopped. As a result, the deflection of the second 111+ portion 14 is eliminated.

The method for correcting run-out according to the present invention will be qualitatively and concretely explained below with reference to FIG. In this figure, the horizontal axis t represents time, and the vertical axis y represents the position of the roller 58. Further, the point y=s indicates that when the roller 58 comes into contact with the outer peripheral surface of the second shaft portion 14 and displaces it, this second 4111 portion 14
There are two illumination + Fit O2, (focal focus 50.5
2 is an extension of the 1h11 line 0 of the first shaft portion 12 supported by the i line. This is the position of the roller 58 when the runout with respect to the axis 01 of No. 2 becomes zero.

Rotating the electric motor 54, the motor 54 passes through the first shaft portion 12 to the second one.
1: Rotate the l+ portion 14. Descend the roller 58,
The second shell 1 portion 14 is displaced and the flexible camp ring 16 is deformed (a). This state is then maintained (b). This is the time to provide the flexible coupling 16 with the above-mentioned rubbing interlock. After this time has elapsed, the roller 58 is held at J-, Uj1 (c), and the o-roller 58 is held at y=s, M, (d). The purpose is to correct the curling of the flexible compression ring 16 by the grinding motion, and it is preferable to have this period.

Thereafter, the roller 58 is moved to the top 11. At the same time, the electric motor 54 is decelerated e), and the dial cage 56
Measure the deflection part of the second shaft portion 14 (f). If the runout is within the standard range, the rotation of the electric motor 54 is stopped, and the runout correction ends.

If the amount of deflection of the second shaft portion 14 exceeds the standard, the above operation can be repeated again.

Alternatively, the above operation can be performed only once, and the next operation can be performed thereafter. That is, stop the rotation of the electric motor 540 and determine the direction of runout (g), manually turn the shaft portion 14 of ff12 so that this runout points upward at the center between the axes of the pair of rollers 58, and then 58 is lowered to displace the second shaft portion 14 in the direction opposite to the swing i, and after deforming the flexible force/pull ring 16, the roller 58 is moved upward y1 (h). In this case, raising the roller 58 to - is a method of bringing the roller 58 to the position y=s (the state of the imaginary line) or beyond this position to a position where the roller 58 is separated from the outer peripheral surface of the second shaft portion 14. , the method shown by the solid line. In the title of the song, the second shaft portion 14 is simply displaced in the direction opposite to the deflection direction to deform the flexible coupling 16, but the flexible cup has already been deformed by the operations in (a) and (b). ring 16
Since the amount of vibration is sufficiently reduced, the amount of shake recovery can be kept within a sufficiently small range, and the operation can be simplified.

In the latter method, the roller 58 is stopped rising at a certain set position, and then the electric motor 54 is rotated and held in that state (i
). The strain in the flexible coupling 16 is first removed by deforming the flexible coupling 16 in a direction opposite to the direction of deflection of the flexible coupling 16, and then the shaft portion 14 of the joint 2 is rotated, and the flexible coupling 16 is deformed in a direction opposite to the direction of deflection of the flexible coupling 16. Depending on the type and properties of the elastic body used for the flexible coupling 16, by including this operation after removing strain, the deflection of the flexible coupling 16 can be minimized. Moreover, the restoration of runout (I) can be suppressed to a sufficiently small range. After the displacement and rotation time of the second shaft portion 14 has elapsed, the above-mentioned operation (C) or f) is performed to complete the runout correction. .

The time and displacement y for each operation in FIG. 5 are determined by the type of elastic body used in the flexible coupling 16, the spring constant,
It can be determined by taking into account the size of runout remaining during molding and other factors.

The relationship between the amount of shake restoration after the runout is removed according to the method of the present invention and the amount of shake restoration after the conventional method is shown in FIG. That is, in the present invention A, if the runout is set to 60 within the standard and then left alone, the runout δ hardly changes even after time t has elapsed. On the other hand, in conventional method B, the runout is δ. When left for a while after the change, the deflection δ increases extremely as time t passes, indicating that the change over time is large.

In the seventh session, the deviation was corrected by the present invention method V and the conventional method,
The figure shows the relationship between the prying angle and the prying torque after the size is within the standard. In this case, the prying angle θ is the angle that the axis 02 of the second shaft portion 14 makes with the shaft of the first shaft portion 12 at 5t o + when the flexible compling 16 is deformed, as shown in FIG. , and the prying torque T is the product of F and L. In the present invention C, when the prying angle is OI, the prying torque is T1, whereas in the conventional method, the prying torque is T2,
It's getting bigger. As is clear from this figure, the ratio T10 of the prying torque T to the prying angle θ is smaller in the method of the present invention. This means that even if the shaft 10 has the same amount of runout, such as a propeller shaft, the shaft 10 with the runout reduced by the present invention will be more stable during low-speed driving when assembled to the vehicle body than the one with the runout removed using the conventional method. Seven notes indicate that the vibrations will be smaller.

According to the present invention, since the cords of the flexible coupling can be forcibly blended together and/or the cords and the rubber can be made to blend together, the amount of recovery over time of runout after runout can be made extremely small. As a result, the quality of the propeller shaft at the time of shipment can be ensured by correcting the deflection of the propeller shaft of the percussion bundle according to the present invention. In addition, the prying torque relative to the prying angle becomes small, and even if the amount of wobbling is large to some extent, vibration of the vehicle body hardly occurs during low-speed driving. Furthermore, since it is only necessary to displace the second shaft portion while rotating it, automation of run-out correction becomes possible.

Note that the present invention is applicable not only to propeller shafts but also to shafts in which two shaft portions are connected by a flexible coupling.

[Brief explanation of the drawing]

Fig. 1 is a front view with a part of the shaft that is the subject of the present invention in cross section, Fig. 2 is a side view of the flexible coupling, Fig. 3 is a front view showing the method of the present invention, and Fig. 4 is the roller. 5 is a graph qualitatively showing the method of the present invention, FIG. 6 is a characteristic diagram showing the relationship between time and runout amount, and FIG. 7 is a graph showing the relationship between torsion angle and torsion torque. The characteristic diagram, FIG. 8, is an explanatory diagram showing the relationship between the twist angle and the twist torque. 10: shaft, 12: first shaft portion, 14; second shaft portion, 16: flexible coupling, 5181 roller. Agent: Nobuyuki Matsunaga, Go1's Physician

Claims (2)

[Claims] (1) A method for removing runout of a shaft formed by connecting first and second shaft portions by a flexible coupling, in which the first shaft portion is rotatably supported, and the first 1111 portion is rotatably supported. rotating the second shaft portion;
displacing said second shaft part during said rotation in a direction intersecting the axis of said shaft part with the Nl line of said first shaft part, and then removing said displacement; How to get rid of swing. (2) A method for removing runout of a shaft formed by connecting first and second shaft portions by a flexible coupling, in which the first 4111 portion is rotatably supported, and the Ij
The second shaft portion is rotated by rotating the first +11 portion of U, and during this rotation, the second shaft portion is rotated by the l of the shaft portion.
The l1b line is displaced in a direction intersecting the axis of the first shaft portion, and then the displacement is removed and rotation is stopped, and the axis of the second shaft portion is aligned with the first shaft portion. A method for correcting run-out of a shaft including a flexible coupling, the method comprising: removing the displacement after being displaced in a direction intersecting the axis of the flexible coupling.