JP3398201B2 - Rolling bearing manufacturing method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a rolling bearing.

[0002]

2. Description of the Related Art A rolling bearing (hereinafter referred to as a bearing) is composed of rolling elements such as bearing rings, balls or rollers, and a cage for rolling elements which is provided as necessary. Of these, the bearing race is composed of an inner race a and an outer race b (FIG. 19 exemplifies a deep groove ball bearing race in which the rolling element d is a ball, and FIG. 20 shows the rolling element d. An example of a bearing ring of a cylindrical roller bearing is a roller). Most of the troubles of currently manufactured bearings are caused by defects on the raceway c of the inner ring a or the outer ring b. The conventional checking of defective bearings has been carried out by assembling the bearings and then inspecting whether the bearings function sufficiently as a finished product or not, and excluding inappropriate products. Usually in one bearing,
It is extremely rare that a defective portion occurs in both the inner ring and the outer ring, and in most cases, even if a defective product occurs, the defect is due to either the inner ring or the outer ring.

[0003]

However, in the inspection after the assembly as described above, even if the defective portion is generated only in either the inner ring or the outer ring, there is no way to know it and He had to give up the whole thing. This is a huge financial loss. The present invention aims to solve such a problem.

[0004]

In order to solve the problem, the present invention provides the following rolling bearing manufacturing method. That is,
The rolling bearing manufacturing method according to the first invention of the present application
The first process that manufactures each part of the bearing, and the first process
We inspect at least the outer ring and inner ring of the bearing
The second step to select the right one, and the second step to select
Assemble proper outer ring and inner ring together with other parts of the bearing
And a third step. The second step constitutes the bearing.
Use the optical sensor 1 with the inner ring and outer ring separated.
Inspect each of the raceways for scratches and surface defects.
And outer ring separately and follow the results of this inspection.
That excludes improper ones for the inner and outer rings separately
Is. The optical sensor 1 includes a light projecting unit 2 and a light receiving unit 3.
And the light projecting unit 2 tries to inspect the orbital surface of the light.
The light-receiving part 3 reflects from the track surface.
Received light, and the light received by the light receiving unit 3 may cause scratches or defects.
The presence or absence is detected. The third step is the second step
Assemble the outer ring and inner ring that are judged to be appropriate by the inspection of
The product is completed as a rolling bearing. Also books
In the rolling bearing manufacturing method according to the second invention,
In the rolling bearing manufacturing method according to the first invention,
A plurality of light units 2 and a plurality of light receiving units 3 are provided, respectively.
It Each of the light projecting units 2 ... 2 has a continuous gauge that emits light.
The light-receiving sections 3 ... 3 have a shape that follows the shape of the road surface.
The tip that receives it is continuous and forms a shape that follows the shape of the raceway surface.
The optical sensor toward multiple points on the cross-section of the orbital surface at predetermined positions.
The projector 1 projects and receives light at the same time. Further books
In the rolling bearing manufacturing method according to the third invention,
In the rolling bearing manufacturing method according to the first invention,
Move the sensor 1 relative to the cross section of the raceway surface, or
Moves the optical sensor 1 with respect to the cross section of the orbital plane.
It is characterized by

[0005]

In any one of the first to third aspects of the present invention which employs the above means
Even in the invention, in the second step, the optical ring is manufactured with the inner ring and the outer ring manufactured in the first step separated from each other.
The inner ring and the outer ring are individually inspected using the sensor 1, and the inner surface and the outer ring are inspected for defects. Then, in the third step, the proper inner ring and outer ring are assembled. It is possible to know if there is a product, and it is possible to sort out such defective products before assembly. Therefore, it is not necessary to abandon the entire bearing, especially both the inner ring and the outer ring, as in the conventional inspection, due to a defect that occurs in either the inner ring or the outer ring.

[0006]

EXAMPLES An example of the present invention will be specifically described below.

The method of manufacturing a rolling bearing according to the present invention is
It can be carried out regardless of the type of bearing manufactured. For example, regarding load direction type, radial type bearing,
It can be implemented by any manufacturing method of the thrust bearing. It is possible to carry out both types of rolling elements and manufacturing methods of ball bearings and roller bearings. Further, the rolling element row type can be applied to any of the single-row bearing, double-row bearing, and multi-row bearing manufacturing methods. Furthermore, the method of manufacturing various bearings can be carried out regardless of the shape and type of the raceway surface, the presence or absence of seals, and the like.

This bearing manufacturing method includes a first step, which is a manufacturing step for individual parts, a second step, which is a step for inspecting at least the respective raceway surfaces of the inner ring and the outer ring, for defects, and a third step, which is an assembling step. Composed of and. Each step will be described in detail below.

The first step is a step of manufacturing the inner and outer rings, the rolling elements, and other members which are parts of the bearing. This first step uses a conventionally known device and manufacturing method,
Each of the bearing parts including the inner ring and the outer ring is manufactured.

In the second step, the optical sensor is used with at least the inner ring and the outer ring forming the bearing separated from each other.
For each raceway surface, the inner ring and the outer ring are inspected separately for each raceway, and according to the result of this inspection, the inner ring and the outer ring are separately checked for improper ones.

The above-mentioned third step is a step of assembling the respective parts including the outer ring and the inner ring, which are judged to be appropriate in the inspection of the second step, to complete a product as a rolling bearing. This assembling step is performed using a conventionally known bearing assembling method and assembling apparatus.

As described above, the above-mentioned first step, which is a manufacturing step for each part, and the third step, which is a step for assembling each part after manufacturing, achieve their respective objectives by a conventionally known method and apparatus. In the method according to the present invention, the second step is set for inspection between the first step and the third step.

An embodiment of the inspection performed in the second step will be specifically described below with reference to the drawings. First, since the device configuration used for the inspection and the scanning method of the sensor differ depending on the type of the bearing to be inspected, the types of the bearing will be summarized. The bearings (rolling bearings) are roughly classified into those shown in Table 1 below. That is, ball bearings and roller bearings are roughly classified, and typical types thereof are listed in Table 1.

[0014]

[Table 1]

In Table 1, for the ball bearing, B-
O-1, B-O-2, B-O-3, B-O-4, B-O
-5 shows the outer ring, B-I-1, B-I-2, B
-I-3, B-I-4, B-I-5 show the inner ring. Therefore, B-O-1, B-I-1, and B-O-2
And B-I-2, B-O-3 and B-I-3, B-I-4 and B-I-4, B-O-5 and B-I-5 each have one bearing track. It constitutes a ring. And, in Table 1, for the roller bearing, R-O-1, R-O-2, R-O-3,
R-O-4 and R-O-5 indicate the outer ring, and R-I-
1, R-I-2, R-I-3, R-I-4, R-I-5
Shows the inner ring. Also in this case, R-O-1 and R-I-1, R-O-2 and R-I-2, R-O-3 and R
-I-3, R-I-4 and R-I-4, R-O-5 and R-
I-5 constitutes a bearing ring for each bearing.

In order to automate the inspection of the raceway surface defects from the viewpoint of manufacturing efficiency, the raceway surface is inspected using an optical sensor.
To do . The following describes a defect detection raceway performed using this optical sensor.

First, as shown in FIG. 1, the optical sensor 1
Includes a light projecting unit 2 and a light receiving unit 3. FIG. 1 shows a state in which the optical sensor 1 is inspecting the raceway c of the inner ring a of the bearing before assembly for scratches, surface defects and the like. As shown in the figure, the light projecting unit 1 emits light to a position where the track surface c is to be inspected, and the light receiving unit 3 receives the light reflected from the track surface c. Then, the presence or absence of scratches or defects is detected by the light received by the light receiving unit 3. Here, the inspection of the inner ring a is shown, but the same configuration can be applied to the outer ring having an inner diameter large enough to dispose the sensor 1.

As shown in FIG. 1, the light projecting section 2 and the light receiving section 3 may be provided one by one, but as shown in FIG. 2, a plurality of both are provided. It is efficient because it can inspect multiple different points on the orbital surface at once. In the structure shown in FIG. 2, a plurality of light projecting portions 2 ... Formed by a light transmitting member such as an optical fiber are arranged in a line on the surface side of the light transmitting / receiving portion support 10 of the optical sensor 1 like a bundle. Although not visible on the back surface in FIG. 2, a plurality of light receiving portions 3 formed by light transmitting members such as a plurality of optical fibers are also arranged in a line on the back surface side of the translucent light receiving portion support 10. In the embodiment shown in FIG. 2, the light projecting section 2
, And the light receiving part 3 are provided on the translucent light receiving part support 10 and are integrated into one unit to form the front and back sides.
Are formed (FIG. 3). Each of the light projecting sections 2 ... Has a shape that follows the shape of the orbital surface c, with its tip that emits light being continuous. In this figure, it cannot be seen as the back side,
Similarly, the light receiving portion 3 has a shape that follows the shape of the orbital surface c, with its tip that receives light being continuous.

In this way, when a plurality of light units 2 and light receiving units 3 are provided, the numbers of both are the same, and the light emitted by a predetermined light projecting unit 2 is received by a corresponding predetermined light receiving unit 3. It is suitable to carry out. However, it is not necessary that the numbers of the light projecting units 2 and the light receiving units 3 are completely the same. For example, one light projecting unit 2 that emits sufficient light as a light source is provided with a plurality of light receiving units 3. However, it can be implemented.

Another embodiment will be described by taking the case of inspecting the outer ring of the ball bearing as an example. As shown in FIG.
It is also possible to implement the light projecting units 2 provided on the light transmitting / receiving unit support 10 even if they are formed in a state of being branched from the light source transmitting unit 11, which is one main trunk. In this case, the light emitted by the light source transmission unit 11 is supplied all at once until the branched light projecting units 2 ... However, the light receiving part 3
For ..., from the need to transmit the detection results individually, to the processing device or display device of the detection data,
The light receiving sections 3 ... Are in an independent state (not shown). As shown in FIG. 5, as shown in FIG. 5, it is convenient that the light-transmitting / receiving unit support 10 is integrally fixed to the light-transmitting units 2 and the light-receiving units 3 to form a unit. Is. It can also be used to inspect the inner ring.

In the case of the embodiment shown in FIGS. 1 to 5, the light projecting unit 2 projects the coherent light in one direction, and the light receiving unit 3 receives the coherent light by normal reflection. It is placed in a position where it can be received. But,
As shown in FIG. 6, the light projecting unit 2 employs a non-directional light emitting unit such as a lamp, and the light receiving unit 3 receives only the reflected light from a predetermined position on the orbital surface. It is also possible to carry out in this way. According to this structure, a plurality of light receiving units 3 are provided for the one light emitting unit 2 described above.
Will be easier to implement when Although FIG. 6 shows the case of the inspection of the inner ring, the same can be applied to the case of the outer ring.

In particular, as in the embodiment shown in FIGS. 2 and 4, the tips of the light projecting portions 2 ... And the light receiving portions 3 forming the tip of the optical sensor 1 have a shape along the shape of the raceway surface. The bearing ring of the ball bearing (inner ring B-O-1 to B-B
-O-5 and outer ring B-I-1 to B-I-5),
This method is suitable when inspecting a raceway surface whose section is an arc. In the case of an orbital ring whose cross-sectional shape is an arc, the radius of curvature is constant, and therefore the light projecting portions 2 and the light receiving portions 3 may be formed so that the tips thereof form an accurate arc.

In each of the above-mentioned embodiments, the raceway of the ball bearing was suitable for the raceway having a circular cross section, but the roller bearings, in particular, R-O-1 and R-O in Table 1 were used. -2, R-O-
3, R-O-4 and corresponding R-I-1, R-I-
As shown in FIG. 7, the light projecting portion 2 has a straight orbital cross-section such as 2, R-I-3 and R-I-4.
... or the light receiving portions 3 (located on the back surface of the light projecting portion 2 in FIG. 7) may be arranged in series so as to form a straight line.

The one shown in FIGS. 1 to 7, that is, the fixed inspection type, projects and receives light of the optical sensor 1 toward one or a plurality of arcs or straight lines drawn by a section of a predetermined position on the orbital surface. Is done at once. Therefore, while the light projecting unit 2 and the light receiving unit 3 of the optical sensor 1 perform the inspection on at least one arc or transverse straight line of the orbital surface to be inspected, the optical sensor 1 does not move and is in a fixed position. Is. However, it is desirable that the optical sensor is configured so that it can be moved to another position in the circumferential direction of the orbital surface (direction of arrow s in FIG. 1). In this case, the optical sensor 1 may be moved directly, but the optical ring 1 under inspection is rotated to relatively move the optical sensor 1 to the next inspection position.
May be moved. These fixed inspection types are
The inspection accuracy can be improved by increasing the number of the light projecting units 2 and the light receiving units 3 and making the intervals close.

In order to further improve the inspection accuracy, a scanning type inspection type is suitable. As shown in FIG. 8, this is to move the optical sensor 1 with respect to the orbital plane c and to inspect each position steplessly. In the fixed inspection type described above, there is a limit even if it can be said that the inspection accuracy can be improved by increasing the number of the light projecting units 2 and the light receiving units 3 and making the intervals close, and there is a limit between adjacent light receiving units 3. That is, a so-called dead zone in which light is not received by any of the light receiving units 3 is necessarily generated. Therefore, such a dead zone can be eliminated by performing the stepless inspection as in the embodiment shown in FIG. 8, and the inspection accuracy can be remarkably improved. In the case shown in FIG. 8, the optical sensor 1 is set so as to draw a predetermined trajectory, so that the optical sensor 1 always has a constant interval with respect to the track surface c. Further, when the orbital surface c is such that the cross-section of it draws a complete arc, as shown in FIG.
If the optical sensor 1 is axially fixed to its supporting member (not shown) and is rotatable about the axis 12 along the track surface c, the optical sensor 1 is also mounted on the track surface c in this case as well. On the other hand, it is possible to always have a fixed interval. The optical sensor 1 shown in FIGS. 8 and 9 has a pair of light projecting units 2
The integrated light receiving section 3 and the light receiving section 3 are shown.

Further, as shown in FIG. 10, for example, an apparatus having a plurality of light projecting portions 2 and light receiving portions 3 as in the embodiment shown in FIG. It is extremely effective in achieving this.

General (RO-1 and RO-0 in Table 1
2, R-O-3, R-O-4 and the corresponding R-I-
(For example, 1, R-I-2, R-I-3, and R-I-4) having a linear cross-sectional shape, such as a raceway surface of a roller bearing, the optical sensor 1 uses a scanning type When the inspection is performed, the optical sensor 1 may simply be moved linearly as shown in FIG. 11, for example. Also in this case, as shown in FIG. 12, one having a plurality of light projecting portions 2 ... And light receiving portions 3 ...
By scanning, the inspection accuracy can be further improved.

In addition, in the above-described embodiments of performing the scanning type inspection, the optical sensor 1 is not moved but moved.
It is also possible to carry out the inspection by moving the bearing ring with respect to (Fig. 13).

B-O-4 of the ball bearing and R of the roller bearing shown in Table 1
Regarding the outer ring of the self-aligning type bearing like -O-4, the center of the radius is not located inside the hollow part of the annular outer ring even when the raceway surface draws an arc. In this case, the center 3 cannot be set there and the scanning such as rotating the optical sensor 1 cannot be performed. Therefore, in such a case, the optical sensor 1 may be moved along the determined trajectory as in the case shown in FIG. Of course, the scanning method shown in FIG. 8 is also effective for a track surface that does not have an accurate arc. However, when the scanning accuracy does not matter, it may be possible to deal with an orbital surface that does not draw an accurate circular arc as a pseudo circular arc and scan the optical sensor 1 by rotation to deal with it. The method may be selected and implemented as needed.

Regarding the above-mentioned various scans of the optical sensor 1,
Any device may be used as long as it can appropriately hold the sensor 1, slide or swing (rotate) the sensor 1, or hold or rotate the bearing ring. here,
An example of the peripheral device of the sensor 1 suitable for use in the scanning type inspection of the outer ring of the ball bearing that requires the most complicated operation will be given. This device is a device provided with a mechanism for moving the inspection position by rotating the outer ring in the inspection of the outer ring.

First, FIGS. 14 and 15 explain a mechanism for moving the inspection position by rotating the outer ring (FIG. 15 shows a side view of the device shown in FIG. 14).

This device 4 is provided with at least two rollers 41 and 42 for holding the outer ring b and supplying a rotational force.
As shown in the figure, the outer ring b to be inspected is sandwiched and held between the roller 41 located above and the roller 42 located below. At least the outer peripheral surface of each roller, which is in contact with the outer ring b, is formed of rubber, urethane, plastic, or another elastic body.

The roller 41 located above can be swung in the p direction, and while the outer ring b is held, this swing is suppressed by appropriate means. A portion 41d supporting the shaft 41b fixed to the center 41a of the roller 41 is disposed in the device 4 via appropriate hinges 41e, 41e, and further, an actuator or the like (complexity of the drawing is provided in this supporting portion 41d. Is omitted in order to avoid the above.) The tip of the roller 41 is fixed, and such a sliding means enables the roller 41 to move in the p direction.

The center 41a of the roller 41 is located at the center b of the outer ring b so that the outer ring b held by the roller 41 does not fall off.
It is arranged so as to have a margin m in the horizontal direction rather than c.

As shown in FIG. 15, rollers 41 and 42 are provided.
The outer ring b held between contacts the turntable 43 provided on the back side thereof, and is regulated by the turntable 43 so as to be rotatable but not to fall off to the back side. The turntable 43 may supply the turning force to the outer ring b under inspection, but if the turntable 43 is simply fixed to the device 4 as a shaft, the turning force is exclusively supplied to the outer ring b under inspection. It can be implemented even if it is left to 41 or roller 42. Incidentally, the rollers 41 and 42
41b fixed to the centers 41a and 42a of the shaft
And 42b are pulleys 41c, 42 provided on the rear side.
c and the belt 44 hung on these pulleys 41c and 42c are configured to be interlockable with each other. Of course, the rollers 41 and 42 may be separately driven (not shown) by separately provided electric motors or the like. However, in this case, by appropriate means, the rollers 41, 4
No. 2 needs to be synchronized in rotation.

Thus, the optical sensor 1 is arranged inside the held outer ring b, and the raceway surface provided on the inner peripheral surface of the outer ring b is inspected. This device
Since the outer ring of the ball bearing is used, as shown in FIG. 15, a mechanism for scanning the optical sensor 1 along an arc is separately provided.

Reference numeral 5 in FIG. 14 shows a hollow guide housing which sequentially guides the outer ring b to be inspected next to the rollers 41 and 42. The head of the waiting outer ring b to be inspected immediately after the outer ring b under inspection is held by the holding body 51 and stays on the shoe 50 until the inspection of the outer ring b under inspection is completed. The tip of the holding body 51 is bent in a hook shape. That is, the hook 52 that holds the front of the outer ring b on standby is formed. Also, the holder 51
Has its base end fixed to the sliding arm 53.

The outer ring b, which has been inspected, is sent to the guide 6 leading to the assembling process (third process) or excluded as a defective product according to the inspection result. More specifically, when the inspection is completed, the optical sensor 1 arranged inside the outer ring b moves from the outer ring b to the outside. Then, the roller 41 pressing the outer ring b moves up in the p direction, and the holder 51
Is slid forward by the sliding arm 53 (left hand in FIG. 14). At this time, the outer ring b that passed the inspection and passed
In the state where the roller 41 is released from the roller 41, the roller is pressed by the tip of the sliding holder 51 and is sent to the guide 6. At the same time, the holding body 51 feeds the held outer ring b on standby between the rollers 41 and 42.

Further, the rejected outer ring b is not transferred to the guide 6 by an appropriate means and is excluded separately (not shown in order to avoid complication of the drawing). For example, the lower roller 42 may adopt the same structure as the upper roller 41 to enable the downward swing (not shown).

FIG. 16 shows a driving method suitable for achieving both the swing of the roller 41 and the roller 42 and the supply of the rotational force. This includes a pulley 45 such as a motor that supplies rotational force, an upper roller 41 and a lower roller 4.
2, the tension roller 46 is installed. More specifically, the tension roller 46 presses the belt 47 in the direction of arrow T from the outside of the belt 47 in order to apply tension to the belt 47 that is hung on the drive wheels.
This pressing force may be obtained by the tension roller 46 including an elastic member such as a spring (not shown). FIG. 16 is a schematic diagram for explaining an appropriate driving method in an easy-to-understand manner. In reality, the outer ring b to be held is held.
It is necessary to dispose a belt, other rollers, etc. so as not to interfere with the loading and releasing of the sheet. With respect to this, for example, instead of directly hanging the belt 47 on the roller 41 or the roller 42, an appropriate pulley or the like is provided on the other parts of the shafts 41b, 42b included in the roller 41 or the roller 42,
The belt 47 may be hung on these pulleys.

The device 4 can also be used to rotate the inner ring a in the inspection of the inner ring a. In this case, the optical sensor 1 may be brought close to the outer peripheral surface of the inner ring a having the raceway surface (not shown) from the lateral hand not blocked by the rollers 41 and 42.

Next, a suitable mechanism will be illustrated as the mechanism for performing the above-described scanning along the shape of the cross section of the raceway surface of the outer ring b of the optical sensor 1. As shown in FIG. 17, the optical sensor 1 arranged inside the outer ring b is provided at the tip of the arm 81. The base end of this arm 81 is the tip 8 of the rocking bowl 82.
It is fixed to 2a. The swing bowl 82 has a base end portion 82 b fixed to the swing shaft 84. The entire swing bowl 82 is bent substantially at a right angle from the base end portion 82b to the tip end 82a and has a substantially U shape, and therefore the arm 81 and the swing bowl 82 are substantially U-shaped as shown in the drawing. To present. The swing bowl 82 can swing within a predetermined angle by receiving a swing force from the swing shaft 84. The scanning center X of the sensor 1 is located on an extension of the central axis Y of the swing shaft 84. With such a configuration, when the swing shaft 84 supplies the swing force to swing the swing bowl 82, the sensor 1 at the tip of the arm 81 swings along the track surface c. is there.

Next, FIG. 18 shows an appropriate device 7 for supplying the rocking force to the rocking shaft 84. In this structure, a rotating portion 73 and a swinging portion 74 are arranged on a slide table 71 having an appropriate sliding means 70 such as an actuator. The rotating portion 71 is provided with a turntable 73a that receives a rotating force from the electric motor 73b and rotates.

One end 75a of the power transmission member 75 is fixed to the outer circumference of the turntable 73a. The power transmission member 75 is a rod-shaped body, and the other end 75b thereof is axially fixed to the tip end of the rocking body 75a included in the rocking portion 74.
The swing shaft 84 is fixed to the swing portion 74.
The base end of the rocking portion 75a is fixed to one end of the rocking shaft 84.

When the turntable 73a rotates,
This rotational movement is converted into a linear (sliding in the longitudinal direction) movement of the power transmission member 75. Then, in response to the linear movement of the power transmission member 75, the rocking body 75a rocks. The swing shaft 84 receives this swing force and swings the swing bowl 82 shown in FIG.

In order to enable adjustment of this swing range,
The other end 75b of the power transmission member 75 is axially fixed to the position adjusting member 74b of the rocking body 75a, and the position adjusting member 74b can change the position of the rocking body 75a in the longitudinal direction h as necessary. It is effective if it is possible. Although not shown in order to avoid complication of the drawing, the position adjusting member 74b is the rocking member 75a in the normal state.
It is completely fixed to, and only when the above adjustment is necessary,
It has an appropriate means capable of changing its position. The length of the power transmission member 75 can be adjusted in accordance with the position change of the position adjustment member 74b. For example, a screwing structure such as that used in a turnbuckle is adopted. More specifically, the power transmission member 75 is composed of a tubular main body 75c having a screw groove inside, and shafts 75d and 75e screwed to both ends of the main body 75c. By screwing the shafts 75d and 75e, the entire length of the power transmission member 75 can be expanded and contracted (not shown).

The optical sensor 1 is arranged at a predetermined position,
When it is separated from the bearing ring at the end of the inspection, the sliding means 7
The slide table 71 may be slid in the horizontal direction in FIG. At this time, limit switches 72 and 72 are provided as appropriate so that the sliding is separated at an appropriate position,
It is effective to make that control.

By adopting the above configuration, it is possible to realize the inspection of the outer ring of the ball bearing, which is relatively difficult to perform the scanning type inspection. Since FIGS. 17 and 18 show the principle, fine adjustment of each part may be performed by adopting a well-known technique. Further, for example, when inspecting the outer ring of the angular bearing, the positions of the top dead center and the bottom dead center of the swing of the swing shaft 84 are changed in consideration of the positions of both ends of the arc formed by the section of the raceway surface c. It can be carried out. Further, when performing a pair inspection on the bearing ring of the thrust type bearing, if the bearing ring is held in a state of lying from the standing state of FIG. The inspection can be performed as in the case of radial bearings. Figure 1
The device shown in FIGS. 7 and 18 can also be used to inspect the inner ring of a ball bearing. The optical sensor 1 shown in FIG. 17 is a long one provided substantially at right angles to the arm 81, but it is not limited to such a shape. For example,
The optical sensor 1 may not be entirely inserted into the outer ring, but may be formed in such a shape that only the light projecting portion and the light receiving portion, or only the tip thereof is inserted into the outer ring (not shown). .

The device suitable for this inspection has been described above centering on the bearing ring, especially the outer ring of the radial roller bearing which is difficult to perform the scanning type inspection, but the present invention is not limited to such a device and the necessary scanning can be performed. In this case, it is possible to implement the inspection by adopting an apparatus having another configuration.

Among the rolling bearings to be inspected, there are thrust roller bearings, bearings for automobile clutch releases, water pumps, railway vehicles, crane sheep, swivel seats, chain conveyors, etc. To be precise, there are those that do not belong to any of Table 1 or those that are a composite type of those listed in Table 1, but in this case, the cross section of the raceway surface is an arc or a curve approximate to an arc. Depending on whether it is a straight type or a linear type, the sensor arrangement, scanning, etc. may be selected from the above-mentioned methods, and whether it is a radial type bearing,
Depending on whether the bearing is a thrust type bearing, an inner ring, or an outer ring, the device for holding and scanning the sensor may be selected and adjusted according to the above.

[0051]

According to the first to third inventions of the present application , since the inner ring and the outer ring are separately inspected for defects on the raceway during the manufacturing process of the bearing, proper parts of the inner ring and the outer ring can be obtained. Need not be abandoned as improper. Therefore, the manufacturing cost is significantly reduced. Moreover, since inadequate parts of the inner ring and the outer ring are eliminated during the manufacturing process, the finished bearing product can be immediately treated as a proper product and can be shipped without any separate inspection.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an example of an apparatus used for carrying out the present invention.

FIG. 2 is a principal part explanatory view showing an embodiment of an apparatus used for carrying out the present invention.

FIG. 3 is a main part explanatory view showing an embodiment of the above-mentioned device used for carrying out the present invention.

FIG. 4 is an explanatory view of a main part showing an embodiment of an apparatus used for carrying out the present invention.

FIG. 5 is an explanatory view of the essential parts showing one embodiment of the above-mentioned device used for carrying out the present invention.

FIG. 6 is an explanatory diagram showing an example of an apparatus used for carrying out the present invention.

FIG. 7 is an explanatory diagram showing an example of an apparatus used for carrying out the present invention.

FIG. 8 is an explanatory diagram showing a scanning state of an embodiment of an apparatus used for implementing the present invention.

FIG. 9 is an explanatory diagram showing a scanning state of an embodiment of an apparatus used for carrying out the present invention.

FIG. 10 is an explanatory diagram showing a scanning state of an example of an apparatus used for carrying out the present invention.

FIG. 11 is an explanatory diagram showing a scanning state of an example of an apparatus used for implementing the present invention.

FIG. 12 is an explanatory diagram showing a scanning state of an example of an apparatus used for carrying out the present invention.

FIG. 13 is an explanatory diagram showing a scanning state of an example of an apparatus used for implementing the present invention.

FIG. 14 is a front view of the essential parts showing an embodiment of the apparatus used for carrying out the present invention.

FIG. 15 is a side view of the essential parts showing one embodiment of the above-mentioned device used for carrying out the present invention.

FIG. 16 is an explanatory diagram showing a driving example of the above apparatus used for implementing the present invention.

FIG. 17 is a schematic perspective view of an essential part showing an embodiment of an apparatus used for carrying out the present invention.

FIG. 18 is a schematic front view showing an embodiment of an apparatus used for carrying out the present invention.

FIG. 19 is an overall vertical sectional view showing an example of a ball bearing.

FIG. 20 is an overall vertical sectional view showing an example of a roller bearing.

[Explanation of symbols]

1 optical sensor 2 Projector 21 first support 22 Second support part 23 Auxiliary support

Continuation of front page (56) Reference JP 54-59543 (JP, A) JP 5-281160 (JP, A) JP 60-186337 (JP, A) JP 52-148885 (JP , A) JP-A-59-83832 (JP, A) JP-A-6-51070 (JP, A) Actual Kaihei-62-62308 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB) Name) F16C 33 / 64,43 / 04 B23Q 17/24

Claims (3)

(57) [Claims] 1. A first step of manufacturing each part of a rolling bearing, a second step of inspecting at least the outer ring and the inner ring of the bearing manufactured in the first step and selecting an appropriate one, and a second step. The third step is to assemble the proper outer ring and the inner ring, which have been selected in step 1, together with other parts of the bearing, and the second step is to install the optical sensor in a state in which the inner ring and the outer ring forming the bearing are separated. For each raceway surface, inspecting for scratches and surface defects is conducted separately for both the inner and outer rings, and the inner and outer rings are separated according to the results of this inspection.
The above optical sensors are excluded.
Is equipped with a light emitter and a light receiver, and the light emitter orbits the light.
The light is emitted at the position where the surface is to be inspected, and the light receiving part
The light reflected from the road surface is received by the light received by the light receiving unit.
Therefore, the presence or absence of scratches or defects is detected . In the third step, the outer ring and the inner ring, which are judged to be appropriate in the inspection in the second step, are assembled to complete a product as a rolling bearing. A method of manufacturing a rolling bearing, comprising: 2. A plurality of light emitting units and a plurality of light receiving units are provided respectively.
Each of the light emitting parts is connected to its tip that emits light.
The light receiving part also receives light.
The tip of the kicker is connected to form a shape that follows the shape of the raceway surface.
The optical sensor toward multiple points on the cross-section of the orbital surface at predetermined positions.
The feature is that the light is transmitted and received at the same time.
The method for manufacturing a rolling bearing according to claim 1. 3. The optical sensor is moved relative to the cross section of the orbital plane.
The optical sensor to the cross section of the orbital plane.
The rolling bearing according to claim 1, wherein the rolling bearing is moved.
Manufacturing method.