JPH0454432Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a pinion engagement inspection device.

(Prior art) Generally, after manufacturing is completed, the pinions used in planetary gear devices, etc. in automatic transmissions for automobiles are inspected to check the meshing state of the gears and whether the inner diameter is within set dimensions. Inner diameter inspection etc. are to be carried out.

The meshing test is performed by meshing a pinion rotatably supported on a support shaft supported in a cantilever parallel to the master gear with a master gear supported to transmit driving force. ,
Conventionally, the inner diameter inspection has been carried out manually using a limit gauge consisting of an upper limit gauge and a lower limit gauge at a station separate from the engagement inspection.

(Problems to be solved by the invention) As explained in the prior art section above, if the pinion engagement inspection and inner diameter inspection are performed at separate stations, the work space will inevitably become larger. Of course, there was a problem in that the inspection work was also complicated.

This invention was made in view of the above points,
The purpose of this is to enable meshing inspection and inner diameter inspection to be performed at the same station.

(Means for Solving the Problems) In the present invention, as a means for solving the above problems, the master gear, which is supported to transmit driving force, is supported in a cantilever parallel to the master gear. In a pinion meshing inspection device configured to perform a pinion meshing test by meshing a pinion that is rotatably supported on a support shaft, the pinion meshing test device is configured to perform a pinion meshing test by meshing a pinion that is rotatably supported on a support shaft. It has a two-stage outer diameter structure in which a small diameter part and a large diameter part are successively formed to serve as a lower limit gauge and an upper limit gauge for detecting whether or not the support shaft is located at a position opposite to the support shaft. Accordingly, a movable member that moves forward and backward is provided, and a push-in head for pushing the pinion into the support shaft is elastically mounted on the movable member so as to be movable back and forth, and a detection means for detecting the amount of movement of the push-in head is further provided. It is attached.

(Function) In the present invention, the following effects can be obtained by the above means.

That is, a pinion engagement test is performed by meshing a pinion that is rotatably supported on a support shaft that is cantilevered parallel to the master gear with a master gear that is supported to transmit driving force. When performing this, the amount of movement of the pushing head changes depending on whether the pinion cannot be inserted into the small diameter part of the support shaft or if it can be inserted into the large diameter part of the support shaft. By detecting the change in the amount of movement, an abnormality in the inner diameter of the pinion can be easily detected. In other words, the inner diameter can also be inspected at the position where the pinion engagement is inspected.

(Embodiments) Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 5, the pinion engagement inspection device of this embodiment includes a master gear 4 pivotally attached to one end of a rotating shaft 3 of a support 2 supported on a machine frame 1; A support shaft 5 is fixed to the machine frame 1 so as to be parallel to each other and rotatably supports a pinion W, which is a workpiece to be inspected. It is provided with a movable member 6 for pushing the pinion, and a push arm 7 for sending out the inspected pinion W, which is pivotally supported on the support shaft 5.

A pulley 8 is pivotally attached to the other end of the rotating shaft 3 of the support 2, and the pulley 8 is rotated by a drive means (not shown).
In other words, the master gear 4 is rotated by the driving force transmitted via the pulley 8.

The movable member 6 is provided at the lower end of a vertical arm 9, and the vertical arm 9 is moved forward and backward by a drive cylinder 10 fixed to the machine frame 1. That is, the vertical arm 9 is connected to the tip of the piston rod 10a of the drive cylinder 10, and when the drive cylinder 10 contracts and extends, the vertical arm 9
(In other words, the movable member 6) is made to move forward and backward toward the support shaft 5. Reference numeral 11 is a drive cylinder for moving the push arm 7 forward and backward, and 12 is a workpiece for supplying the pinion W to a position where it can mesh with the master gear 4.

The structure of the support shaft 5 and the movable member 6 is
This will be explained in further detail with reference to the drawings.

The support shaft 5 is replaceably attached to the machine frame 1 via a fixture 13,
The inner diameter D of the pinion W is within a predetermined setting range.
It has a two-stage outer diameter structure in which a small diameter part 5a and a large diameter part 5b are successively formed, which serve as a lower limit gauge and an upper limit gauge for detecting whether or not _D0 is within ±α. In other words, the diameter of the small diameter portion 5a is d ₁ , the diameter of the large diameter portion 5b is d ₂ , and the set dimensions of the inner diameter D of the pinion W
When the allowable dimensional error range for D ₀ is α,
d ₁ = D - α, d ₂ = D + α, and the small diameter portion 5
If the pinion W cannot be inserted into the large diameter portion 5b or if the pinion W cannot be inserted into the large diameter portion 5b, it can be determined that there is an abnormality in the inner diameter of the pinion W. .

On the other hand, the movable member 6 includes a guide rod 14 protruding in the horizontal direction so as to face the support shaft 5 at the lower end of the vertical arm 9, and a cylindrical case 15 attached to the outer periphery of the guide rod 14. The push-in head 16 is fitted into the outer periphery of the guide rod 14 so as to be movable forward and backward, and is urged in the forward direction by a spring 17. The pushing head 16 acts to push the pinion W, which is supplied by the work shooter 12 to a position where it can mesh with the master gear 4, into the support shaft 5 as the movable member 6 moves forward, and has a rear end portion. An outward flange 16a that is engaged with an inward flange 15a that projects from the front end of the case 15 is integrally provided, and the engagement of both flanges 15a and 16a limits the forward movement of the push-in head 16. It's becoming regulated. The case 15 also includes proximity switches 18A, 18B, and 18C that act as detection means for detecting the amount of advance and retreat of the push-in head 16.
is provided. These proximity switches 18
A, 18B, 18C are the push-in heads 16
The proximity switch 18A detects the maximum amount of movement of the pushing head 16, and the proximity switch 18B detects the minimum amount of movement of the pushing head 16. Detection and proximity switch 18
C is designed to detect when the push-in head 16 is not moving.

Next, the operation of the illustrated pinion engagement inspection device will be explained with reference to FIGS. 2 to 4.

First, as shown in FIG.
pinion W to a position where it can mesh with master gear 4.
When the guide rod 14 of the movable member 6 is brought into contact with the tip of the support shaft 5 by the contraction operation of the drive cylinder 10, the push-in head 16 elastically installed on the movable member 6 is moved forward in the forward movement process. As a result, the pinion W is fitted onto the support shaft 5. At this time, as shown in FIG. 2, if the pushing is completed with the pinion W fitted into the small diameter portion 5a of the support shaft 5, the inner diameter D of the pinion W is D ₀ −α<D< It is determined that it is within the tolerance range of D ₀ +α. In this state, the push-in head 16 is moved slightly backward relative to the guide rod 14, and the push-in head 16
An OK signal is output from the proximity switch 18B facing the outward flange 16a. When the inner diameter inspection of the pinion W is completed, the engagement inspection of the pinion W is performed by meshing with the master gear 4 rotated by a drive means (not shown).

Further, in the process of pushing the pinion W, if the pushing is completed in a state where the pinion W cannot be inserted into the small diameter portion 5a of the support shaft 5 as shown in FIG. 3, the inner diameter D of the pinion W is , D ₀ −
It is determined that α>D is outside the allowable error range. In this state, the push-in head 16 is moved back greatly with respect to the guide rod 14, and the outward flange 1 of the push-in head 16
From the proximity switch 18A facing 6a
An NG signal is output, and an abnormality in the inner diameter of the pinion W is detected. In this case, the pinion W is rejected as a defective product.

Furthermore, in the pushing process of the pinion W, when the pushing is completed with the pinion W passing through the small diameter part 5a of the support shaft 5 and being fitted into the large diameter part 5b, as shown in FIG. The pinion W
The inner diameter D is determined to be outside the tolerance range of D ₀ +α<D. In this state, the pusher head 16 does not move at all relative to the guide rod 14 and the outwardly facing flange 16 of the pusher head 16
From proximity switch 18C facing a
An NG signal is output, and an abnormality in the inner diameter of the pinion W is detected. In this case as well, the pinion W is rejected as a defective product.

As described above, according to this embodiment, the proximity switches 18A, 18B, 18C, which are means for detecting the amount of advance and retreat of the push-in head 16 when the push-in head 16 pushes the pinion W onto the support shaft 5,
By detecting this, abnormalities in the inner diameter D of the pinion W can be detected extremely easily.
By using the device that inspects the engagement of the pinion W, it is also possible to inspect the inner diameter of the pinion W at the same station.

It should be noted that the present invention is not limited to the configuration of the above-mentioned embodiments, and it goes without saying that the design can be changed as appropriate within the scope of the gist of the invention.

(Effects of the invention) As described above, according to the invention, the master gear supported to transmit driving force is rotatably supported on a support shaft supported in a cantilever parallel to the master gear. In a pinion meshing inspection device configured to perform a pinion meshing test by meshing a pinion, the support shaft is connected to a pinion for detecting whether the inner diameter of the pinion is within a predetermined set dimension. A two-stage outer diameter structure is formed by continuously forming a small diameter part and a large diameter part that serve as a lower limit gauge and an upper limit gauge, and a movable member that moves forward and backward toward the support shaft is provided at a position facing the support shaft. A push-in head for pushing the pinion into the support shaft is elastically provided on the movable member so as to be movable back and forth, so that the pinion cannot be inserted into the small diameter portion of the support shaft when inspecting the engagement of the pinion. By utilizing the fact that the amount of advance and retreat of the push-in head changes depending on whether the push-in head is able to be inserted into the large diameter portion of the support shaft, the change in the amount of advance or retreat is detected by the detection means. Therefore, an abnormality in the inner diameter of the pinion can be easily detected, and there is a practical effect that the inner diameter can also be inspected at the position where the pinion meshing inspection is performed.

[Brief explanation of drawings]

FIG. 1 is a partially sectional side view showing the main parts of a pinion meshing inspection device according to an embodiment of the present invention, and FIGS. 2 to 4 show the pinion meshing testing device shown in FIG. 1. FIG. 5 is a side view, partially in cross section, showing various aspects during operation, and FIG. 5 is a side view of the pinion engagement inspection device according to the embodiment of the present invention. 4... Master gear, 5... Support shaft, 5a... Small diameter part, 5b... Large diameter part, 6... Movable member, 16...
...Pushing head, 18A, 18B, 18C...
Detection means, W...pinion.

Claims (1)

[Scope of utility model registration request] In order to perform a pinion engagement test by meshing a pinion rotatably supported on a support shaft supported in a cantilever parallel to the master gear with a master gear supported to transmit driving force. A pinion meshing inspection device comprising:
The support shaft has a two-stage outer diameter structure in which a small diameter part and a large diameter part are continuously formed to serve as a lower limit gauge and an upper limit cage for detecting whether the inner diameter of the pinion is within a predetermined set dimension. A movable member that moves forward and backward toward the support shaft is provided at a position facing the support shaft, and a pushing head for pushing the pinion against the support shaft moves back and forth on the movable member. A pinion meshing inspection device, characterized in that it is provided with a detection means that is resiliently installed and detects the amount of movement of the push-in head.