JPS632049B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a device for inspecting whether a specified number of rolling elements, such as roller bearings, needle bearings, tripart joint inner rings, etc., are installed in a full roller state without a retainer. .

Conventionally, the method used to detect whether or not a specified number of rolling elements of this type of bearing is installed is Jikkosho.
Publication No. 37-6711 is publicly known, and as shown in FIG.
A vertical groove 2 is carved on the outer circumferential surface of the lower end, and a slider 3 is swingably mounted in this vertical groove, and the lower end 3a of this slider 3 protrudes elastically outward from the rotating shaft. A device that does this has been devised. In addition, 4 is slider 3
5 is a stopper that adjusts the amount of swing of the slider 3. As shown in Fig. 2, the operation of this device is as follows: insert the lower end of the rotating shaft into the housing 6 of the bearing, bring the protruding lower end 3a of the slider into contact with a rolling element 7 such as a needle, and rotate. Rotate the axis 360°. At this time, if the number of rolling elements 7 of the bearing is insufficient, the rolling elements 7 will be biased due to the protruding force of the slider 3, creating a gap, and the slider will automatically move into the gap. to invade. The movement of this slider is controlled by micro switch 8.
This detects that the number of rolling elements 7 such as needles is insufficient. However, if this type of device is equipped with a specified number of rolling elements 7, one detection operation will be completed unless the rotating shaft 1 inserted into the bearing housing 6 is rotated 360 degrees. do not. Therefore, there was a drawback that the time required per detection was longer. In addition, even if the specified number of rolling elements 7 are not installed, the installed rolling elements 7 may fall down (skew) or bite into the housing 6, resulting in a force between each rolling element. Since the slider is balanced, in this type of device, this balance must be broken only by the protruding force of the spring 4 in order to protrude the slider, which inevitably puts strain on the operation and lengthens the cycle time. Problems such as damage to the rolling elements and inability to perform accurate detection have occurred.

The present invention provides technical means for solving the above-mentioned problems, and includes an inner raceway member such as a shaft or an inner ring, and an outer ring or the like that is combined to be movable relative to the inner raceway member in the axial direction and rotatable. A device for testing the number of rolling elements in a bearing, etc., consisting of an outer raceway member and a rolling element mounted immovably in the axial direction in a full roller state between these inner and outer raceway members, and is fixedly supported in a fixed position. A pushing member supported by a base via a pressing means to move the outer raceway member in the axial direction relative to the inner raceway member to expose one axial end of the row of rolling elements, and a rolling element exposed by the pushing member. It is supported by the base via elastic means so that it can be thrust inward from the outside in the radial direction of the outer raceway member toward the exposed part of the moving body row, and the number of rolling elements is adjusted according to the amount of thrust. A detection rod for inspecting the number/deficiency of the bearings, and a drive jig rotatably supported on the base via a drive mechanism to rotate the outer raceway member around the bearing axis during the inspection of the detection rod. The outer raceway member is rotated by the driving jig while the number of rolling elements is being inspected by the detection rod.

By employing the above-mentioned technical means, the present invention achieves the following effects.

That is, by rotating the outer raceway member while elastically pressing the detection rod toward the rolling element row from the outside to the inside in the radial direction of the bearing, the entire rolling element row is pressed inward and outward. Rolling motion occurs simultaneously between raceway members, which causes the row of rolling elements to fall (skew) and the force balance between each rolling element (bridging condition) to be disrupted, resulting in an insufficient number of rolling elements. When the detection rod enters between the rolling elements, it is possible to accurately detect the lack of (missing) rolling elements.In this case, there is no need to rotate the detection rod once along the row of rolling elements; Accurate detection is possible simply by pressing elastically inward in the radial direction, thereby shortening the inspection time, increasing cycle time, improving work efficiency, and improving detection accuracy.

Hereinafter, specific examples of the present invention will be described with reference to the drawings.

First, the basic principle of the present invention will be explained using the inner ring (bearing portion) of the tripart joint 9 as an example. The basic structure of this invention is as shown in FIG.
from the side with the pushing member 13 (toward the right in the figure in the axial direction of the inner ring branch shaft 10) to release the rolling element 11.
A part of the ball ring 12 is exposed, and the tip of the detection rod 14 is inserted under a constant pressure between the exposed rolling elements 11 as shown in FIG. A rocking motion is applied around the branch shaft 10 to disrupt the balance of forces between the rolling elements. Then, depending on the amount of thrust of the detection rod 14 at this time,
This detects whether the rolling element 11 has come off.

Next, a specific embodiment of the present invention will be described based on the case of a tripart joint inner ring shown in FIGS. 5 to 7.

The basic configuration of this embodiment is that the pressing part a is provided with a cylinder rod that presses the branch shaft 10 of the tripod joint 9, which is the object to be inspected, from above, and the cylinder rod is loosely fitted and rotates back and forth. A swinging part b that is provided with a sleeve and makes rocking motion by contacting the ball ring 12, and a swinging part b that moves the ball ring 12 to the side and presses the exposed rolling elements 11 from above to prevent a shortage in the number of rolling elements by the amount of protrusion. The swinging part b and the detecting part c operate simultaneously when the pressing part a is lowered. The pressing part a, the swinging part b, and the detecting part c are held on a base 16, and each part has the following configuration.

First, as the pressing part a, 17 is the lower part of the cylinder mechanism (not shown), 18 is the rod of the cylinder attached to the lower part 17, and 19 is the hemispherical centering jig attached to the tip of the rod 18 of the cylinder. The tool 20 is a pin fitted into the rod 18 of the cylinder.

Further, as the swinging part b, 21 is a motor, 22
23 is a crank mechanism that converts the rotational motion of the reducer into reciprocating motion; 24 is a drive gear that is connected to the crank mechanism 23 and rotates back and forth at a constant angle; and 25 is a driven gear that meshes with the drive gear 24. ,
26 is a first sleeve that rotates reciprocally integrally with the driven gear 25; 27 is a first sleeve that rotates the driven gear 25 in a reciprocating manner;
28 is a torque transmission pin fitted into the lower end of the first sleeve 26, 29 is a drive jig that contacts and swings the pole wheel 12 to be inspected, and 30 is a drive jig This is a shim that is inserted into the shim 29 and adjusts the installation height.
4. The torque is transmitted as a reciprocating rotational motion of the drive jig 29 via the driven gear 25, the first sleeve 26, and the torque transmission pin 28. Note that 31 is a sliding bearing mounted inside the upper end of the first sleeve 26, and the first sleeve 26 is slidably fitted to the outside of the rod 18 of the cylinder. Further, 32 is a spherical member fixed to the first sleeve and provides centering properties to the drive jig 29, 33 is a screw that fixes the spherical seat member 32 to the first sleeve 26, and 34 is fixed to the first sleeve 26. It is a long window with a hole in it. These swinging parts b
is pressed downward by a compression spring 35 interposed between the lower part 17 of the cylinder mechanism and the driven gear 25.

Further, as the detection part c, 36 is a guide rod fixed to the base 16, 37 is a detection upper and lower slider,
38 is a pole slide; 39 is a sliding bearing that is attached to the inner periphery of the detection vertical slider 37 to regulate the position of the first sleeve 26 in the vertical direction and to hold it so that it can rotate freely; 13 is a tripart joint for the pole ring 12; 9 in the axial direction of the branch shaft 10 (in the figure,
This is a pushing member that presses to the right) and is fixed to the detection vertical slider 37. 14 is the rolling element 11
This is a detection rod for checking if there is a shortage in the number of rods, and is fixed to the detection up and down slider 37. 40 is a needle detector attached to the tip of the detection rod 14, and 41 is a parallel plate spring that holds the needle detector 40. When this part is enlarged, it is shown in FIG. This structure allows the parallel leaf springs 41 to be deflected in response to the rotational movement of the rolling elements 11, so that the meter reading 40 follows the horizontal rotational movement of the row of rolling elements 11. 42 is a second sleeve fitted over the long window 34 of the first sleeve 26; 43 is a forked forked member attached to the lower end of the second sleeve 42; The fork member 43 is raised by a pin 20 fitted into the rod 18 when the cylinder rod 18 is raised. 44 is a detection rod bracket fixed to the upper part of the detection rod 14, 45 is a direct switch attached to the bracket 44, 46 is a positioning stopper for the rod bracket 44, and 47 is a positioning stopper attachment. 48 is the vertical slider 3 for detection.
A third sleeve is fixedly attached to 7 and supports the detection rod. This third sleeve 48 also serves as a dog for the direct switch 45. Note that 14a is a compression spring that presses the meter reading 40 downward, and 42a is a compression spring that presses the second sleeve 4.
2 and its forked fork member 43 to press the detection rod 14 downward.

The operation of this device is as follows. First, the tripod joint 9 is loaded using a suitable holding means, and the cylinder mechanism is operated to lower the cylinder rod 18. Then, the centering jig 19 attached to the tip of the cylinder rod 18 first aligns the branch shaft 1 of the tripod joint 9.
0, position and hold. At almost the same time, the first sleeve 26 connected to the lower part 17 of the cylinder mechanism via the compression spring 35 also descends, and the driving jig 29 moves toward the ball ring 12.
comes into contact with. At the same time, the detection vertical slider 37, which rotatably holds the first sleeve 26, lowers together with the first sleeve 26. Then, the pushing member 13 fixed to the detection vertical slider 37 pushes the ball ring 12 inward in the axial direction (to the right in the figure), exposing a part of the row of rolling elements 11. Furthermore, cylinder rod 1
8 descends, the bifurcated fork member 43 of the second sleeve 42 descends following the pin 20 fitted into the rod 18 due to the biasing force of the compression spring 42a.
The bracket 44 receiving the biasing force of the bracket 4a descends, and the probe 40 at the tip of the detection rod 14 enters between the exposed rolling elements 11. As the rods 18 of these cylinders descend. Centering jig 19
contact of the tripod joint 9 with the branch shaft, contact of the driving jig 30 with the ball ring 12, and pushing member 1.
3, the movement of the ball ring 12 laterally and the insertion of the tip of the detection rod 14 into between the rolling elements 11 are performed almost simultaneously. Next, following this (or in parallel with the above operation), the motor 21 of the swinging part b starts to rotate. Due to the action of the crank mechanism 23, the drive gear 24 and the driven gear 25 begin to rotate back and forth, the first sleeve 26 rotates, and the drive jig 29 rotates via the torque transmission pin 28. Therefore, even if the 11 rows of rolling elements are in a mutually balanced bridge state, this is forcibly and reliably broken, and the entire row of rolling elements rotates in both left and right directions around the peripheral surface of the branch shaft. be given Therefore, even if the needle 40 of the detection rod 14 presses directly above the rolling elements, it will smoothly enter between the rolling elements 11 with extremely small force. Then, the bracket 44 of the detection rod 14 attached to the upper end of the detection rod 14 descends, and the direct switch 4
5 comes into contact with the upper end of the third sleeve 48 which is a dog. This ON signal generates an insufficient number detection signal. On the other hand, if a specified number of rolling elements are mounted, the length of descent of the detection rod 14 will be small, and the direct switch 45 will not come into contact with the upper end of the third sleeve 48. Therefore, it remains OFF. When the detection operation is completed in this way, the motor 2
1, the rotational movement of the drive jig 29 is stopped, and the rod 18 of the cylinder is raised. When the rod 18 rises, the centering jig 19 that fixes the branch shaft 10 first comes off. In addition, the pin 20 fitted into the rod 18 of the cylinder and protruding outward from the long window 34 of the first sleeve 26 also rises, causing the second sleeve 42 in contact with it to resist the compression spring 42a. Rise. The second sleeve 42 has a forked fork member 4 at its lower part.
3, and the detection rod bracket 44
lift at the same time. The detection rod 14, which is integrated with the detection rod bracket 44, also rises together against the compression spring 14a. Subsequently, when the rod 18 of the cylinder further rises, the pin 20 abuts against the upper edge of the long window 34 of the first sleeve 26, causing the entire first sleeve 26 to rise against the compression spring 35. Then, the drive jig 29 and the pushing member 13 separate from the ball ring 12 of the tripod joint 9, and the entire detection vertical slider 37 rises. With the above operations, the inspection of the number of rolling elements is completed.

Note that this embodiment is a device for inspecting the number of rolling elements on a branch shaft 10 of a tripod joint 9, and the centering jig 19 and the like have shapes suitable for this, but this invention has some improvements. Cylindrical roller bearings, needle bearings, etc. can also be inspected by simply making improvements.

As explained above, according to the present invention, it is possible to reliably inspect whether all rolling elements are installed in a bearing such as a cylindrical roller bearing or a needle bearing or a bearing portion of a joint branch shaft.

Furthermore, since the outer ring member is forcibly moved in the axial direction by the pushing member, inspection can be performed from a direction perpendicular to the rolling elements.

In addition, since the outer ring member is forcibly given a turning motion, the bridging state of the rolling elements can be reliably broken, allowing for quick and reliable inspection.

[Brief explanation of the drawing]

Fig. 1 is a structural explanatory diagram of a conventional bearing rolling element removal inspection device, Fig. 2 is a sectional view taken along line A-A in Fig. 1, and Figs. A side sectional view and a front view illustrating the principle of the present invention for inspecting moving objects, FIG. 5 is a side view of an embodiment of the invention, FIG. 6 is a front view thereof, and FIG. 7 is an enlarged perspective view of the detection rod. It is a diagram. 9...triport joint, 10...branch axis,
DESCRIPTION OF SYMBOLS 11...Rolling element, 12...Ball ring, 13...Pushing member, 14...Detection rod, 16...Base, 19...Centering jig, 21...Motor, 2
3... Frank mechanism, 26... First sleeve,
29... Drive jig, 37... Vertical slider for detection, 40... Meter detection, 42... Second sleeve, 4
5... Direct switch, 48... Third sleeve, a... Pressing part, b... Swinging part, c... Detecting part.

Claims (1)

[Claims] 1. An inner raceway member such as a shaft or an inner ring, an outer raceway member such as an outer ring that is combined to be able to move relative to the inner raceway member in the axial direction and rotatably, and a state of full rolling between these inner and outer raceway members. A device for testing the number of rolling elements such as a bearing, which is composed of rolling elements fixedly mounted in the axial direction, and in which the outer raceway member is moved in the axial direction relative to the inner raceway member that is fixedly supported in a fixed position. A pushing member is supported by a base via a pressing means to expose one end of the rolling element row in the axial direction, and a radially outer part of the outer raceway member is pushed toward the exposed portion of the rolling element row exposed by the pushing member. a detection rod that is supported by a base via elastic means so as to be able to push inward from the outside, and that tests whether the number of rolling elements is adequate or insufficient based on the amount of thrust;
During the inspection of the detection rod, a drive jig is rotatably supported on the base via a drive mechanism in order to rotate the outer raceway member around the bearing axis. 1. An apparatus for inspecting the number of rolling elements in a bearing, etc., characterized in that the outer raceway member is rotated by the driving jig during the inspection of the number of moving elements.