JP3877496B2 - Assembly inspection device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an assembly inspection apparatus for a thrust bearing that is assembled to a main shaft of an automatic transmission for a vehicle, for example.
[0002]
[Prior art]
Conventionally, for example, when a gear is incorporated into a main shaft of an automatic transmission for a vehicle, a pair of thrust needle bearings are incorporated on both sides of the gear so as to receive an axial load. A pair of thrust needle bearings B is prepared, and as shown in FIG. 8, after the gear G is attached to the end of the main shaft M via the thrust needle bearing B on one side, the other side is further arranged from above. It is sent to the inspection process with the thrust needle bearing B mounted. In the inspection process, after the thrust needle bearing B is visually confirmed, a measuring tool 51 is used to form a cylindrical jig main body 52 and the jig main body. The cylinder member 53 is slidably fitted to the cylinder member 53 and is set in a state where a part of the main shaft M is inserted into the cylinder member 53. 3 is brought into contact with the lower end flange portion Ma of the main shaft M, the lower end portion of the jig body 52 is brought into contact with the intermediate flange portion Mb of the main shaft M, and the detector 54 is detected on the detection seat 53z of the cylindrical member 53. The machined height of the part a of the main shaft M is measured.
After that, at the stage where other parts are assembled and put into an assembled state, the assembly of the thrust needle belling B is inspected with a tactile sensation by checking the play of the gear G or the like.
[0003]
[Problems to be solved by the invention]
However, with the conventional method, the assembly of the thrust needle bearing is guaranteed only by checking the number of parts in advance and tactile inspection after assembly into the assembled state, not an objective inspection method. The inspection method required.
[0004]
Accordingly, an object of the present invention is to make it possible to objectively inspect the assembled state of the thrust needle bearing and to easily inspect it.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a first cylinder member provided on one end side of a jig body in an apparatus for inspecting whether or not an assembly part is properly assembled on a workpiece, and the first cylinder member. A second cylinder member that is fitted so as to be relatively movable in the axial direction, and a meshing mechanism that is provided on a fitting surface of the first cylinder member and the second cylinder member and that has a ball on one side and a notch on the other side. If the assembled state of the assembly component is normal, the ball of the meshing mechanism is cut off by moving the first cylindrical member to the inspection position by bringing the tip of the second cylindrical member into contact with a predetermined position of the workpiece. If the assembled state is not normal, the ball of the meshing mechanism is prevented from entering the notch.
[0006]
Here, the predetermined position of the work with which the tip of the second cylinder member abuts is a place where the position changes depending on the presence or absence of the assembled part, for example, when the assembled part is normal and when it is not normal If the relative position of the second cylinder member and the workpiece changes and the assembled state is normal, the ball and the notch are engaged, and if not normal, they are not engaged.
For this reason, for example, a part of the workpiece is inserted into the cylinder of the first cylinder member or the second cylinder member, and an uneven shape portion or the like formed on the workpiece surface is used so that the assembled state is normal. In this case, it is preferable to create a space for allowing the ball to enter the notch, and to prevent the ball from entering the notch by interfering with the convex portion of the workpiece unless the assembled state is normal.
[0007]
With such a configuration, the assembled state can be objectively inspected, and can be easily inspected without requiring skill level.
In this case, the ball may be provided on either side of the first cylinder member or the second cylinder member, or the notch may be provided, but it is convenient if the ball is provided on the inner cylinder member side that directly faces the workpiece side. .
[0008]
According to a second aspect of the present invention, a detector is provided on the jig body, and a detection seat on which the detector can freely contact is provided on the first cylindrical member, and the meshing mechanism is provided by bringing the detector into contact with the detection seat. The engagement state of the ball and the notch can be detected.
[0009]
Thus, if the detector is brought into contact with the detection seat so that the engagement state between the ball and the notch can be detected, anyone can easily and accurately determine an abnormality in the assembled state.
Incidentally, it is possible to measure not only the engagement state of the ball and the notch but also the machining accuracy of the workpiece at the same time by this detector. In this case, both inspections are performed conveniently. It is.
[0010]
According to a third aspect of the present invention, the assembly component is a thrust bearing that is assembled to a shaft of a vehicle transmission.
[0011]
In this way, it is preferable to apply to the assembly inspection of the thrust bearing in the assembly process of the vehicle transmission.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the accompanying drawings.
Here, FIG. 1 is an explanatory view showing an example in which the assembly inspection apparatus according to the present invention is applied to the assembly of a thrust bearing of a vehicle transmission, and FIG. 2 is a partial view when the assembled state of the thrust bearing is normal, FIG. 3 to 7 are explanatory diagrams when the assembled state of the thrust bearing is not normal.
[0013]
In the assembly inspection apparatus according to the present invention, for example, a pair of thrust needle bearings B used for a main shaft M of an automatic transmission of a vehicle as shown in FIG. B is configured as an inspection apparatus 1 that inspects whether B is properly assembled, and a cylindrical jig body 2 and a first cylinder that is slidably fitted to the jig body 2 in the axial direction. A member 3 and a second cylinder member 4 that is slidably fitted in the axial direction with respect to the first cylinder member 3 are provided, and the fitting surfaces of the first and second cylinder members 3 and 4 are made of steel. An engagement mechanism 5 comprising a ball 6 and a notch 7 is formed, and a detector 8 is slidably provided on the jig body 2.
[0014]
An acceptance / rejection display device 10 is connected to the detector 8 via a CPU 9, and the first cylindrical member 3 is provided with a detection seat 3 z on which the detector 8 can come into contact.
And the height between the lower end part of the 2nd cylinder member 4 and the lower end part of the jig | tool main body 2 can be measured now by making the detector 8 contact | abut to the detection seat 3z, for example.
[0015]
The first cylinder member 3 and the second cylinder member 4 are fitted with the first cylinder member 3 on the inner side and the second cylinder member 4 on the outer side. The ball 6 is housed in the first cylinder member 3, and the notch 7 is formed in the second cylinder member 4.
[0016]
As will be described later, the steel ball 6 and the notch 7 of the meshing mechanism 5 are connected to the notch 7 when the inspection apparatus 1 is set on the main shaft M on which the thrust needle bearing B is properly assembled. 6 enters and the steel ball 6 is prevented from entering the notch 7 when there is an abnormality in the assembly of the thrust needle bearing B.
[0017]
The operation of the inspection apparatus 1 as described above will be described.
After the thrust needle bearing B is mounted on the main shaft M and the gear G is mounted on the main shaft M, when a workpiece with another thrust needle bearing B mounted thereon is supplied, the inspection apparatus 1 is set. The
[0018]
That is, when one end side of the main shaft M is inserted into the cylinder of the apparatus 1 and set so that the lower end portion of the second cylinder member 4 is placed on the thrust needle bearing B, the thrust needle bearing B is properly assembled. 2, the relative height of the notch 7 and the taper step portion d of the main shaft M coincides with a desired position so that the steel ball 6 can enter the notch 7 as shown in FIG. 2. A gap is formed.
[0019]
When the detector 8 is brought into contact with the detection seat 3z while pressing the jig body 2, the result is displayed on the pass / fail display device 10 via the CPU 9.
[0020]
On the other hand, for example, when the thrust needle bearing B below the gear G is forgotten to be assembled, as shown in FIG. 3, when the thrust needle bearing B above the gear G is forgotten, as shown in FIG. The relative height of the notch 7 and the taper step portion d is deviated from the desired position, and there is no clearance for the steel ball 6 to enter the notch 7. You will not be able to go down to the position.
[0021]
In addition, when the upper and lower thrust needle bearings B are forgotten to be assembled, the steel balls 6 cannot enter the notches 7 as shown in FIG. 5, and there are more thrust needle bearings B on either side than prescribed. If it is too long, the steel ball 6 cannot enter the notch 7 as shown in FIGS.
[0022]
That is, when the assembly of the thrust needle bearing B is not normal, the steel ball 6 cannot enter the notch 7 and the first cylinder member 3 is in a floating state, and this is detected by the detector 8. Then, the abnormality is notified and NG is determined.
[0023]
With the method as described above, it has become possible to reliably detect forgetting to assemble parts while having a simple equipment configuration.
In the present invention, when it is confirmed that the detector 8 is properly assembled, the accuracy of the machining height of the lower end portion of the main shaft M as in the prior art is also measured.
[0024]
The present invention is not limited to the above embodiment. What has substantially the same configuration as the matters described in the claims of the present invention and exhibits the same operational effects belongs to the technical scope of the present invention.
For example, the workpiece may be an assembly part other than the thrust needle bearing B.
[0025]
【The invention's effect】
As described above, the assembly inspection apparatus according to the present invention is provided with the first cylinder member on one end side of the jig body, and the second cylinder fitted to the first cylinder member so as to be relatively movable in the axial direction. A meshing mechanism is provided on the mating surface with the member.If the assembled state of the assembly part is normal, the ball of the meshing mechanism enters the notch, and if the assembled state is not normal, the ball of the meshing mechanism is notched. Since it does not enter, the assembly state can be objectively inspected, and it can be easily inspected without requiring skill level.
Then, as in claim 2, anyone can easily and accurately determine an abnormality in the assembled state by inspecting the detector provided on the jig body against the detection seat of the first cylindrical member. It is more convenient to measure not only the engagement state of the ball and the notch but also the machining accuracy of the workpiece at the same time with this detector.
And it is suitable if it applies to the workpiece as in claim 3.
[Brief description of the drawings]
FIG. 1 is an explanatory view showing an example in which the assembly inspection apparatus according to the present invention is applied to an assembly of a thrust bearing of a vehicle transmission. FIG. 2 is an explanatory view when the assembled state of the thrust bearing is normal. ] An explanatory diagram when the assembled state of the thrust bearing is not regular, and an example of forgetting to assemble the lower thrust bearing. [Fig. 4] An explanatory diagram when the assembled state of the thrust bearing is irregular, and the upper thrust bearing is assembled. Forgotten example [Fig. 5] An explanatory diagram when the assembled state of the thrust bearing is not normal, and an example of forgetting the upper and lower thrust bearings. [Fig. 6] An explanatory diagram when the assembled state of the thrust bearing is not normal. Example of too many upper thrust bearings [Fig. 7] An explanatory diagram when the assembled state of the thrust bearing is not normal. That Example 8 is an explanatory view of a measuring instrument used in the conventional assembly process [Description of symbols]
DESCRIPTION OF SYMBOLS 1 ... Assembly inspection apparatus, 2 ... Jig body, 3 ... 1st cylinder member, 3z ... Detection seat, 4 ... 2nd cylinder member, 5 ... Intermeshing mechanism, 6 ... Ball, 7 ... Notch, 8 ... Detector , M ... main shaft, B ... thrust needle bearing.

Claims (3)

A device for inspecting whether or not an assembly part is properly assembled to a workpiece, and a first cylinder member provided on one end side of a jig body, and a relative movement in the axial direction with respect to the first cylinder member A second cylinder member that can be fitted, and a meshing mechanism that is provided on a fitting surface between the first cylinder member and the second cylinder member, and that includes a ball on one side and a notch on the other side , The fitting state of the second cylinder member is such that the first cylinder member is inside and the second cylinder member is outside, and the ball of the meshing mechanism is housed in the first cylinder member. The notch is formed in the second cylinder member, and the first cylinder member is moved to the inspection position by bringing the tip of the second cylinder member into contact with a predetermined position of the workpiece. If the assembled state is normal, the ball of the meshing mechanism enters the notch and the assembly State assembly inspection apparatus is characterized in that do not enter the notch interferes with the protrusion of the workpiece ball engagement mechanism unless an authorized is inserted into the first cylindrical member.   2. The assembly inspection apparatus according to claim 1, wherein a detector is provided in the jig main body, and a detector seat on which the detector can freely contact is provided in the first cylindrical member, and the detector An assembly inspection apparatus characterized in that the engagement state between the ball and the notch of the meshing mechanism can be detected by bringing the sensor into contact with the detection seat.  The assembly inspection apparatus according to claim 1 or 2, wherein the assembly component is a thrust bearing assembled to a shaft of a vehicle transmission.

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