JP2023124868A - Rotating body device - Google Patents

Abstract

To provide a manufacturing method and manufacturing device for a rotating body device which can realize firm fixation of a sleeve and a flange while suppressing deformation of the sleeve.SOLUTION: The method is used for manufacturing a rotating body device which includes: a cylindrical sleeve; a cylindrical rotating body provided inside the sleeve; and a flange fixed to an end part of the sleeve and supporting the cylindrical rotating body. When the flange is fixed at the end part of the sleeve; three rollers in one group are inclined to an outer peripheral surface relative to a central axis of the rotating body device and are in contact with the end part of the sleeve; the sleeve is caulked by detecting a load applied to the sleeve in a central axis direction and moving the roller in the central axis direction of the rotating body device while rotating the roller about the central axis of the rotating body device by means of electric feedback control using the detected load such that a load applied to the sleeve is increased.SELECTED DRAWING: Figure 7

Description

The present invention provides a rotator device having a cylindrical rotator provided inside a cylindrical sleeve, such as a magnet roll used for conveying a magnetic developer or an electric motor having a rotor having an external sleeve. The present invention relates to a manufacturing method and manufacturing apparatus for manufacturing a rotator device, and to a rotator device.

2. Description of the Related Art In electrophotographic apparatuses, electrostatic recording apparatuses, and the like, magnet rolls are used as means for conveying a magnetic developer, such as developing rolls and cleaning rolls. The magnet roll has a configuration in which a magnet member having a plurality of magnetic poles is arranged inside a non-magnetic sleeve so that the magnet member and the sleeve rotate relative to each other. Various magnet rolls and manufacturing methods thereof have been conventionally proposed (Patent Documents 1 to 3, etc.).

For example, the magnet roll disclosed in Patent Document 1 includes a magnet member having a plurality of magnetic poles extending in the axial direction on the outer peripheral surface, a hollow cylindrical sleeve made of a plastically deformable non-magnetic material, and these. and flanges secured to the sleeve at both ends of the sleeve. The rigid attachment between the sleeve and the flange permits relative rotation of the permanent magnet member and the sleeve.

Such fixing between the sleeve and the flange is performed by a mechanical method in Patent Documents 1 and 3, and is performed by a chemical method in Patent Document 2.

Specifically, in Patent Document 1, a flange is fitted into an annular recess provided on the inner surface of the end of the sleeve, and the end of the sleeve is bent to mechanically fix the sleeve and the flange. Further, in Patent Document 3, the end of the sleeve is bent toward the end of the flange by a die provided in a press device, and the flange and the sleeve are caulked and fixed, thereby mechanically fixing the sleeve and the flange. I am letting

On the other hand, in Patent Document 2, after injecting an adhesive into an annular groove provided in a flange, the sleeve is inserted into the flange so that the sleeve and the flange are fixed by the adhesive force of the adhesive. there is

JP-A-2-205874 JP-A-6-202479 JP-A-11-84879

In the case of fixing using an adhesive as disclosed in Patent Document 2, the dimensional accuracy is good because no mechanical force is applied, but the production efficiency is reduced because it takes a long time to complete the adhesion. cannot be raised.

The fixing method disclosed in Patent Document 3 can shorten the process compared to the adhesion method. However, since the sleeve is caulked by applying pressure in the axial direction of the flange for a short period of time, it is inevitable that the deformation of the sleeve will reduce run-out accuracy and the sleeve itself will swell, reducing dimensional accuracy. In addition, in order to increase the crimping strength, it is necessary to apply a strong pressure in the axial direction. , there is a possibility that the dimensional accuracy of the magnet roll itself is lowered. From the above, there is a problem that the fixing method in Patent Document 3 cannot be applied to magnet rolls that require high dimensional accuracy.

A similar problem may also occur in other manufacturing methods of rotating body devices in which flanges for supporting the cylindrical rotating body inside the sleeve are fixed to both ends of the sleeve.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a manufacturing method and manufacturing apparatus for a rotator device capable of achieving strong fixation between a sleeve and a flange while suppressing deformation of the sleeve.
On the other hand, the magnet roll has a flange inserted into the sleeve, and a stepped portion inside the sleeve prevents the flange from entering the sleeve more than a certain amount. By grinding the inner peripheral surface of the sleeve, an annular step is formed over the entire inner peripheral surface of the sleeve. It becomes a shape.
On the other hand, since the flange that abuts on the stepped portion is made by machining, the end of the flange becomes sharp after machining.
Therefore, when the flange is inserted into the sleeve and the C-chamfered portion of the flange abuts against the R-shaped stepped portion on the inner surface of the sleeve, the position of the flange is not stable at the contact point between the C-chamfered portion and the stepped portion. As a result, runout of the flange occurred.
The present invention has been made in view of such circumstances, and by matching the shapes of the abutting portions of the sleeve and the flange, it is possible to accurately position the R chamfered portion of the flange with respect to the stepped portion, thereby improving the runout accuracy of the flange. An object of the present invention is to provide a rotator device capable of improving

A manufacturing method according to the present invention is a rotating body device comprising a cylindrical sleeve, a cylindrical rotating body provided inside the sleeve, and a flange fixed to an end of the sleeve for supporting the cylindrical rotating body. wherein, when fixing the flange to the end of the sleeve, a set of three rollers is attached to the end of the sleeve with the outer peripheral surface inclined with respect to the central axis of the rotating body device , the load applied to the sleeve in the central axis direction of the rotating body device is detected, and electrical feedback control using the detected load is performed to increase the load applied to the sleeve by moving the roller to the rotating body While rotating about the central axis of the apparatus, the roller is moved in the direction of the central axis of the rotator apparatus to caulk the sleeve.

In this aspect, a set of three roller surfaces are brought into contact with the end portion of the sleeve at an angle, the rollers are rotated and moved in the axial direction of the rotary device, and the sleeve is crimped to obtain the end portion of the sleeve. to the flange.
Therefore, since the sleeve and the flange are fixed by caulking, no adhesive is required, the cost is low, and the time required for the fixing process is short. In addition, it solves the problem of the caulking process that the deflection accuracy is poor and the sleeve is likely to be deformed (swelled). That is, the load on the sleeve during caulking is small, and the deflection and deformation (bulging) of the sleeve are also small. Furthermore, by moving the roller in the axial direction of the rotating device while rotating, the load on the sleeve can be reduced to manufacture the rotating device.
Furthermore, electrical feedback control increases the load applied to the sleeve in the direction of the central axis, so the load on the sleeve during caulking can be controlled more accurately, further reducing sleeve runout and sleeve deformation (bulging). can be done.

In the manufacturing method according to the present invention, when the load applied to the sleeve in the direction of the central axis of the rotary device reaches a predetermined value, the roller is rotated such that the detected load is maintained at the predetermined value for a predetermined time. It feedback-controls the force that moves the body apparatus in the central axis direction.

In this aspect, by rotating the rollers for a predetermined time while maintaining the load applied to the sleeve at a predetermined value, the ends of the sleeve are efficiently crimped and firmly fixed.

In the manufacturing method according to the present invention, the predetermined time is the time required for the roller to rotate multiple times along the edge of the end of the sleeve.

In this aspect, the roller can be rotated a plurality of times along the edge of the cylindrical sleeve while maintaining the load applied to the sleeve at a predetermined value. Therefore, the ends of the sleeve are crimped more efficiently and a strong fixation is obtained.

The manufacturing method according to the present invention causes the roller to start rotating when a load applied to the sleeve in the central axis direction of the rotating body device is detected.

In this aspect, the roller can be rotated when the roller comes into contact with the end of the sleeve, that is, before a load is applied to the end of the sleeve. can be done.

In the manufacturing method according to the present invention, when the flanges are fixed to both ends of the sleeve, the outer peripheral surface of each of the one end and the other end of the sleeve is inclined with respect to the central axis of the rotating body device. to bring the set of three rollers into contact with each other, rotate each set of three rollers about the central axis of the rotating body device, and move the rollers in the direction of the central axis of the rotating body device. Crimp the sleeve.

In this aspect, both ends of the sleeve can be crimped simultaneously to fix the flanges to both ends of the sleeve. Therefore, the rotator device can be manufactured efficiently.

In the manufacturing method according to the present invention, the roller in contact with the one end is moved in the central axis direction of the rotating body device, and the load applied to the roller in contact with the other end is detected. A load applied to the sleeve in the central axial direction of the body apparatus is detected.

In this aspect, by moving the roller in contact with one end in the direction of the central axis of the rotating body device, a force for caulking the sleeve acts on the both ends, causing the roller in contact with the other end to move. By detecting the applied load, it is possible to detect the load applied to the sleeve in the central axis direction. For example, a drive unit for moving the roller can be provided at one end on the roller side, and a load sensor can be provided at the other end. Therefore, both ends of the sleeve can be crimped simultaneously, the load applied to the sleeve in the central axis direction can be detected, and the amount of roller movement can be feedback-controlled.

In the manufacturing method according to the present invention, the rotation direction of the set of three rollers contacting one end of the sleeve and the rotation direction of the set of three rollers contacting the other end of the sleeve is the opposite.

In this aspect, the set of three rollers in contact with one end of the sleeve and the set of three rollers in contact with the other end of the sleeve rotate in opposite directions. Therefore, deformation (bulging) at the central portion of the sleeve can be suppressed.

In the manufacturing method according to the present invention, the outer peripheral surface of the roller has an inclined surface that widens from the front end surface to the rear end surface, and an inner arc surface arranged on the rear end surface side of the inclined surface.

In this mode, a roller is used that has an outer peripheral surface (machined surface) that includes an inclined surface that extends from the front end surface to the rear end surface and an inner circular arc surface disposed on the rear end surface side of the inclined surface. Therefore, the ends of the sleeve are crimped efficiently, and a large amount of the ends of the sleeve bite into the flange, so that strong fixation can be obtained.

In the manufacturing method according to the present invention, the inner arcuate surface of the roller is brought into contact with the end of the sleeve at the end of moving the roller in the central axis direction of the rotating body device.

In this aspect, the inner arcuate surface of the roller is brought into contact with the end of the sleeve in the final process of moving the roller in the axial direction of the rotary device. Therefore, the end of the sleeve can be made to bite into the flange more firmly.

In the manufacturing method according to the present invention, the central axis of the roller is tilted with respect to the central axis of the rotating body device.

In this embodiment, the central axis of the rollers is inclined with respect to the central axis of the rotating body device, and the knockout cylindrical body (apex) 14b is arranged in the central space of the set of three rollers. is easy.

In the manufacturing method according to the present invention, the outer peripheral surface of the roller has a horizontal surface that extends from the front end surface toward the rear end surface and an inner arc surface that is arranged on the rear end surface side of the horizontal surface, and the roller The central axis is tilted with respect to the central axis of the rotator device.

In this aspect, even when a roller having an outer peripheral surface without an inclined surface is used, by inclining the central axis of the roller with respect to the central axis of the rotating body device, the outer peripheral surface of the roller can be adjusted to the rotating body device. can be tilted with respect to the central axis of

A manufacturing apparatus according to the present invention is a rotating body device comprising a cylindrical sleeve, a cylindrical rotating body provided inside the sleeve, and a flange fixed to an end of the sleeve for supporting the cylindrical rotating body. comprising a crimping machine having three rollers in contact with the end of the sleeve, a rotary motor for rotating the crimping machine around the central axis of a rotating body device, and the crimping machine rotating The roller is driven by a drive unit that moves the body apparatus in the central axis direction, a load sensor that detects the load applied in the central axis direction of the sleeve, and electrical feedback control using the load detected by the load sensor. a sequencer for moving the roller in the central axis direction of the rotating body device while rotating about the central axis of the rotating body device, wherein the roller is arranged with its outer peripheral surface inclined with respect to the central axis of the rotating body device The sequencer rotates the roller and moves the roller in the direction of the center axis of the rotating body device so that the load applied in the direction of the center axis of the sleeve increases, and crimps the sleeve to move the roller. It is configured to secure the sleeve and flange.

According to this aspect, as in the manufacturing method described above, the load applied to the sleeve in the direction of the central axis is increased by electrical feedback control. Run-out and deformation (bulging) of the sleeve can be further reduced.

A rotating body device according to the present invention includes a cylindrical sleeve, a cylindrical rotating body provided inside the sleeve, and disk-shaped flanges fixed to both ends of the sleeve and supporting the cylindrical rotating body. In the rotary body device, the sleeve includes a stepped portion into which the inserted flange is fitted, the stepped portion has an R shape, and the edge portion where the flange contacts the stepped portion conforms to the R shape. have a shape.

A rotating body device according to the present invention includes a cylindrical sleeve, a cylindrical rotating body provided inside the sleeve, and disk-shaped flanges that are crimped and fixed to both ends of the sleeve to support the cylindrical rotating body. wherein the sleeve has a stepped portion into which an inserted flange is fitted, the stepped portion has an R shape, and an edge portion where the flange contacts the stepped portion has the R shape It has a shape that imitates.

A rotating body device according to the present invention includes a cylindrical sleeve, a cylindrical rotating body provided inside the sleeve, and disk-shaped flanges that are crimped and fixed to both ends of the sleeve to support the cylindrical rotating body. wherein the sleeve has a stepped portion into which an inserted flange is fitted, the stepped portion has an R shape, and an edge portion where the flange contacts the stepped portion has the R shape The stepped portion and the edge portion of the flange are in surface contact without a gap.

According to this aspect, by matching the shapes of the abutting portions of the sleeve and the flange, the R-chamfered portion of the flange can be accurately positioned with respect to the stepped portion, and the deflection accuracy of the flange can be improved.

In this aspect, since the sleeve and the flange are fixed by caulking, compared to the adhesive process, no adhesive is required, which reduces the cost, and the work space and processing time are unnecessary because the curing management of the adhesive is unnecessary. can be reduced. In addition, since the load on the sleeve during crimping is small, the amount of deformation of the sleeve is reduced, the deflection accuracy of the sleeve can be increased, and strong fixation can be achieved while suppressing deformation (bulging) of the sleeve. Furthermore, it is possible to control the load applied to the sleeve by electrical feedback control, so that the load on the sleeve during crimping can be controlled more accurately, and the runout and deformation (bulging) of the sleeve can be further reduced. can.
In this aspect, by matching the shapes of the abutting portions of the sleeve and the flange, the R-chamfered portion of the flange can be accurately positioned with respect to the stepped portion, and the deflection accuracy of the flange can be improved.

It is a figure which shows the structure of a magnet roll. FIG. 4 is a diagram showing the shape of a sleeve; It is a figure which shows the structure of the manufacturing apparatus which concerns on 1st Embodiment. It is a figure which shows arrangement|positioning of three rollers. FIG. 2 is a block diagram showing a configuration related to control of the manufacturing apparatus according to the first embodiment; FIG. It is a figure which shows the structure of the manufacturing apparatus at the time of the crimping process start. It is a figure which shows the manufacturing method which concerns on 1st Embodiment. It is a figure which shows the cross-sectional shape of the roller which concerns on 1st Embodiment. FIG. 10 is a diagram showing the transition of deformation of the sleeve in the caulking process; 4 is a flow chart showing a processing procedure of a manufacturing method according to the first embodiment; It is a graph which shows an example of the load control which concerns on 1st Embodiment. 7 is a graph showing another example of load control according to the first embodiment; It is a figure which shows the structure of the apparatus which performs the crimping process which concerns on 2nd Embodiment. It is a figure which shows the state which is performing the caulking process which concerns on 2nd Embodiment. It is a figure which shows the cross-sectional shape of the roller which concerns on the 1st example of 2nd Embodiment. It is a figure which shows the cross-sectional shape of the roller which concerns on the 2nd example of 2nd Embodiment. FIG. 4 is a schematic diagram showing application of a crimping force to a sleeve by a conventional crimping method; FIG. 4 is a schematic diagram showing application of a crimping force to the sleeve by the crimping method of the present invention; FIG. 11 is a vertical cross-sectional view showing configurations of a sleeve and a flange according to a third embodiment; FIG. 11 is an enlarged vertical cross-sectional view showing configurations of a sleeve and a flange according to a third embodiment; FIG. 4 is an enlarged vertical cross-sectional view showing the configuration of a conventional sleeve and flange;

Hereinafter, the present invention will be described in detail based on the drawings showing its embodiments. In the following, an embodiment of a magnet roll will be described in detail as an example of a rotating device.
FIG. 1 shows the configuration of the magnet roll 1, FIG. 1A is a vertical cross-sectional view thereof, and FIG. 1B is a cross-sectional view taken along line AA of FIG. 1A. A magnet roll (rotary device) 1 includes a cylindrical sleeve 2 made of a non-magnetic material, a magnet member 3 disposed inside the sleeve 2, and flanges fixed to the inner sides of both ends of the sleeve 2 in the longitudinal direction. 4a and 4b. As will be described later, although the flanges 4a and 4b have different structures, they are the same members to be crimped. .

The sleeve 2 is made of a plastically deformable non-magnetic metal material such as an aluminum alloy or non-magnetic stainless steel. The magnet member 3 comprises a cylindrical magnet 5 having a plurality of magnetic poles arranged in the circumferential direction, and a round-bar-shaped shaft 6 inserted and fixed into the center hole of the magnet 5 . The shaft 6 is made of a high-strength material such as metal and integrated with the magnet 5 .

The flanges 4, 4 are made of a non-magnetic metal material such as an aluminum alloy or non-magnetic stainless steel. Knurls 40 (grooves formed at equal intervals on the outer peripheral surface, flat knurls) are formed on the outer peripheral surface of each flange 4, 4, and the outer edge portion (knurl side) of each flange 4, 4 is not chamfered. . The other edge portions of the flanges 4, 4 (the edge portions contacting the stepped portion 2b of the sleeve 2, which will be described later) are chamfered. Bearings (rotational bearings) 7,7 are fitted inside the flanges 4,4. A shaft 6 is supported by these bearings 7 , 7 . With such a configuration, the sleeve 2 and the magnet member 3 can rotate relative to each other. As for the knurling 40, cross-cut knurling is also applicable. In addition, the materials (non-magnetic metal materials) used for the sleeve 2 and the flanges 4, 4 may be appropriately set in consideration of the hardness of the metals used for each so that the effects of the present invention can be achieved.

2 shows the shape of the sleeve 2, FIG. 2A is a plan view thereof, and FIG. 2B is a cross-sectional view taken along line BB of FIG. 2A. A plurality of grooves 21 extending in the axial direction are formed on the outer peripheral surface of the sleeve 2 at predetermined intervals. The sleeve 2 is provided parallel to the photosensitive drum (not shown), and the toner held on the outer circumference of the sleeve 2 is transported onto the electrostatic latent image on the developing portion of the photosensitive drum and adheres to the electrostatic latent image. . The plurality of grooves 21 are provided in order to improve the transportability of the magnetic developer at this time. Instead of the grooves 21, the surface of the sleeve 2 may be uneven, or the surface of the sleeve 2 may be roughened by blasting. Alternatively, surface treatment or the like may be applied to improve transportability.

A manufacturing process of the magnet roll 1 having such a configuration will be briefly described.
First, the magnet member 3 is produced. For example, the magnet member 3 may be manufactured by integrating the shaft 6 with an adhesive in the center hole of a cylindrical magnet 5 having a plurality of magnetic poles arranged in the circumferential direction. In addition, a round bar to be the shaft 6 is arranged in a mold of a compression molding device, a magnetic composition in which magnetic powder and resin are mixed is supplied around the round bar, and pressure-molded to integrate. After that, the magnet member 3 may be manufactured by magnetizing a plurality of magnetic poles in the circumferential direction of the magnet 5 .

Next, the manufactured magnet member 3 is inserted into the sleeve 2, and the flanges 4a and 4b are fitted to both end portions of the shaft 6 of the magnet member 3 via the bearings 7 and 7, respectively. The sleeve 2 has stepped portions 2b on which the flanges 4a and 4b are fitted at both ends, and the flanges 4a and 4b are temporarily fixed to both ends of the sleeve 2. As shown in FIG. Finally, both ends of the sleeve 2 are fixed to the flanges 4a and 4b by caulking, which will be described later.
The flange 4a has a flange shaft portion 41 integral with the flange 4a, and the flange 4a and the shaft 6 are rotatably joined via a bearing 7. As shown in FIG.
The flange 4b has a through hole through which the shaft portion 6a of the shaft 6 passes, and is rotatably joined to the shaft 6. As shown in FIG.
With such a structure, the sleeve 2 and the magnet member 3 can be rotated separately by gripping and rotating the shaft portion 6a at the left end and the flange shaft portion 41 at the right end.
In other words, when the flange shaft portion 41 is held and the shaft portion 6a is rotated, the magnet member 3 can be rotated while the sleeve 2 is fixed. can be rotated. The shaft shaft portion 6a is integral with the shaft 6, and the shaft shaft portion 6a will be described as a part of the shaft 6 below.
The stepped portion 2b is formed by an annular recess formed on the inner peripheral surface of the sleeve 2. As shown in FIG. More specifically, the inside diameter of the sleeve 2 except for both ends is smaller than the outside diameter of the flanges 4, 4, and the inside diameter of the both ends is larger than the outside diameter of the flanges 4, 4 (both ends of the sleeve 2 are thick). are formed thinly), and the flanges 4, 4 are formed to have a dimension that allows the flanges 4, 4 to be fitted without looseness, and the difference in inner diameter constitutes the stepped portion 2b.

Hereinafter, the caulking process for fixing the sleeve 2 and the flanges 4, 4, which is the feature of the present invention, will be described in the first embodiment (the central axis of the rollers 15, 15, 15 and the central axis of the magnet roll 1 are parallel to each other). ) and a second embodiment (a form in which the central axes of the rollers 15, 15, 15 are inclined with respect to the central axis of the magnet roll 1). Also, in the third embodiment, configurations of the sleeve 2 and the flanges 4, 4 suitable for the caulking process according to this embodiment will be described.

(First embodiment)
FIG. 3 is a diagram showing the configuration of the manufacturing apparatus according to the first embodiment. The manufacturing apparatus according to the first embodiment is an apparatus for manufacturing the magnet roll 1 by crimping. In FIG. 3, 10 is a base and 11 is a material to be crimped. The material to be crimped 11 is an object to be crimped by inserting the magnet member 3 into the sleeve 2 and fitting the flanges 4, 4 to both ends of the sleeve 2. As shown in FIG.

A linear guide rail 10a is laid on the base 10, and a support base 12 for supporting a material 11 to be crimped is provided at the center of the guide rail 10a. The support base 12 has a slider 12a at its lower portion that can move along the guide rail 10a, and can move along the guide rail 10a. A fixture 13 is provided above the support base 12 so as to sandwich the central portion of the material 11 to be crimped between itself and the support base 12 . The fixture 13 can be vertically moved by a linear motion mechanism such as an air pusher. It can be sandwiched between the tool 13 and fixed. The support base 12 also has an adjustment mechanism (not shown) for adjusting the position of the material 11 to be crimped on the base 10 .
Note that the support base 12 may be fixed to the central portion of the guide rail 10a.

Two caulking machine mounting bases 16, 16 are provided on both end sides of the guide rail 10a with the support base 12 interposed therebetween. The caulking machine mounting bases 16, 16 are, for example, in the shape of a substantially rectangular pair, and have sliders 16a, 16a movable along the guide rail 10a at their lower portions so that they can move along the guide rail 10a. The crimping machines 14, 14 are attached to the inner surfaces of the two crimping machine mounting bases 16, 16, that is, the side facing the support base 12. As shown in FIG. Each of the crimping machines 14, 14 has the same structure, and has a structure in which three crimping rollers 15, 15, 15 are attached to a roller pedestal 14a. The roller pedestal 14a is, for example, disc-shaped, and rollers 15, 15, 15 are attached to the disc surface on the support base 12 side.

FIG. 4 is a diagram showing the arrangement of the three rollers 15,15,15. As shown in FIG. 4, the three rollers 15, 15, 15 are circumferentially arranged with a phase angle of 120° about the centerline. The central axis of each roller 15 , 15 , 15 is parallel to the central axis of the material 11 to be crimped. In other words, the central axis of each roller 15, 15, 15 is parallel to the longitudinal direction of the guide rail 10a and the movement direction of the crimping machines 14, 14. A knockout cylinder 14b is provided at a position surrounded by the three rollers 15, 15, 15 in the roller pedestal 14a, that is, at the center of the roller pedestal 14a.

Rotating motors 17, 17 are connected to the respective roller pedestals 14a via crimping machine mounting bases 16, 16. By driving the rotating motors 17, 17, the crimping machines 14, 14 are rotated about their center lines. and rotates.

One crimping machine mounting base 16 (for example, the crimping machine mounting base 16 on the right side in FIG. 3) is provided with a driving portion 18 for linearly moving the crimping machine mounting base 16 along the guide rail 10a. The drive unit 18 has, for example, a drive mechanism 18c such as a ball screw for linearly moving the slider 16a along the guide rail 10a, and a motor (not shown) to move the crimping machine mounting base 16 by driving the motor. The drive unit 18 can horizontally move the crimping machine 14 together with the crimping machine mount 16 in the central axis direction of the material 11 to be crimped.
Note that the mechanism of the drive unit 18 is not particularly limited, and may be a linear motor, a shaft motor, or the like, as long as it can control the horizontal movement of the crimping machine 14 by electrical feedback control.

The other crimping machine mounting base 16 (for example, the crimping machine mounting base 16 on the left side in FIG. 3) is not provided with a driving portion 18 and is passively moved along the guide rail 10a. . However, since the crimping machine mounting base 16 is connected to a load sensor 19 which will be described later, it moves within a range necessary for load detection by the load sensor 19 . One of the crimping machine mounting bases 16 moves leftward in FIG. 3, contacts one end of the material 11 to be crimped, moves the material 11 to be crimped leftward, and moves the other end of the material 11 to the other. When they come into contact with the crimping machine mounting base 16, the driving force of the driving portion 18 causes both the crimping machine 14 and the material to be crimped 11 to move together to the left in FIG. That is, the crimping machine mounting base 16 slightly moves toward the load sensor 19 according to the load applied to the material 11 to be crimped, and the load is applied to the load sensor 19 .

Furthermore, a load sensor 19 is provided on the other caulking machine mounting base 16 via a rotary motor 17 . The load sensor 19 detects the load applied to the crimping machine 14 of the other crimping machine mounting base 16 , especially the load in the central axis direction of the material to be crimped 11 or the moving direction of the crimping machine 14 and the crimping machine mounting base 16 . The load sensor 19 is provided at a position, for example, on the left side in FIG. More specifically, as shown in FIG. 3, a sensor support portion 10b for supporting the load sensor 19 is provided. It is attached to the sensor support portion 10b at a position and posture facing the central portion of the rotary motor 17 provided at 16. As shown in FIG.

FIG. 5 is a block diagram showing the configuration of the manufacturing apparatus according to the first embodiment. The manufacturing apparatus includes motor control units 17a and 17a and motor amplifiers 17b and 17b that operate the rotary motors 17 and 17 of the two crimping machines 14 and 14, a drive control unit 18a and a drive amplifier 18b that operate the drive unit 18, A sensor amplifier 19 a for detecting a load using the load sensor 19 and a sequencer 20 are provided.

The motor amplifiers 17b, 17b supply electric current to the rotating motors 17, 17 to rotate them. The motor control units 17a, 17a control the rotary motors 17, 17 by controlling current supply by the motor amplifiers 17b, 17b.

The drive amplifier 18b supplies current to the motor of the drive unit 18 to move one of the crimping machine mounting bases 16. As shown in FIG. The drive control unit 18a linearly moves one crimping machine 14 along the guide rail 10a by controlling current supply by the drive amplifier 18b.

The sensor amplifier 19 a amplifies the load detected by the load sensor 19 and outputs a signal indicating the detected load to the sequencer 20 .

FIG. 6 is a diagram showing the configuration of the manufacturing apparatus when starting the caulking process. The sequencer 20 receives the load signal output from the sensor amplifier 19a, and controls the operation of the manufacturing apparatus by outputting control signals to the drive control section 18a and the motor control sections 17a, 17a. It also controls the vertical movement of the fixture 13 .
Specifically, when an instruction to start the crimping process is input, the sequencer 20 outputs a control signal to the drive control unit 18a to move one of the crimping machine mounting bases 16 (the right crimping machine mounting base 16). It is moved in the direction of the support base 12 . Then, the sequencer 20 detects the load applied to the material 11 to be crimped in the central axis direction, and as shown in FIG. Rotate 15,15,15. The sequencer 20 also controls the load applied to both ends of the material 11 to be crimped by controlling the horizontal movement of one of the crimping machine mounting bases 16 according to the load applied to the material 11 to be crimped. After completing the crimping process, the sequencer 20 stops the rotation of the rollers 15, 15, 15 of the crimping machines 14, 14, and moves the crimping machine mounting base 16 and the crimping machine 14 to the right in FIG. Stop the controller.

FIG. 7 is a diagram showing the manufacturing method according to the first embodiment. FIG. 7 schematically shows only the configuration necessary for the caulking process. As shown in FIG. 7 , the rollers 15 , 15 , 15 are rotated about the axis of the material 11 to be crimped and moved by the rotating motors 17 , 17 and the drive unit 18 as described above. Horizontal movement in the axial direction (horizontal direction in FIG. 7) is possible. During the crimping process, the crimping machine 14 on one side (for example, the right side) linearly moves toward the center of the material to be crimped 11 (see arrow a in FIG. 7), and rotates in the opposite direction (reverse direction) (see FIG. 7). 7 arrow b). In addition, rotating in the opposite direction (reverse direction) means that both the crimping machines 14, 14 rotate so as to squeeze (twist) the material 11 to be crimped in FIG. When viewed from the left side, the crimping machines 14, 14 rotate clockwise, and when viewed from the right side, the right crimping machines 14, 14 also rotate clockwise. By such movement of the crimping machine 14, one set of three rollers 15, 15, 15 and the other set of three rollers 15, 15, 15 rotate in opposite directions to each other during the crimping process. At the same time, (a set of three rollers on one side) moves toward the center of the material 11 to be crimped. Further, during the caulking process, the central portion of the material to be caulked 11 is supported and fixed by the clamping between the support base 12 and the fixture 13 . Here, "at the same time" means that the rollers 15 , 15 , 15 move in the horizontal direction and rotate when they come into contact with the material 11 to be crimped. In other words, while rotating the rollers 15 , 15 , 15 , it is sufficient to move them toward the center of the material 11 to be crimped. In other words, before the rollers 15, 15, 15 come into contact with the material 11 to be crimped, it does not matter whether they start rotating or start moving toward the center.
In the case of the manufacturing apparatus according to the first embodiment, the two crimping machines 14, 14 are movable along the guide rail 10a, so that the rollers 15, 15, 15 of the crimping machines 14, 14 move the material 11 to be crimped. It is not possible to accurately know in advance the position and timing of contact with the . Therefore, the sequencer 20 detects whether or not the rollers 15, 15, 15 of the crimping machines 14, 14 come into contact with the leading end of the material 11 to be crimped, based on the signal output from the load sensor 19. If the rollers 15, 15, 15 are not rotating when the rollers 15, 15, 15 come into contact with the caulking material 11, the rollers 15, 15, 15 start rotating before a large load is applied to the material 11 to be caulked. it's good to let
Alternatively, the crimping machines 14, 14 may be moved and the rollers 15, 15, 15 of the crimping machines 14, 14 may be started to rotate.

FIG. 8 is a diagram showing cross-sectional shapes of rollers 15, 15, 15 according to the first embodiment. Each roller 15, 15, 15 has the same shape, the cross-sectional shape of which is shown in FIG. The outer peripheral surface (processed surface) 15a of the rollers 15, 15, 15 that contact the sleeve 2 includes an inclined surface 15b that spreads from the front end surface toward the rear end surface, and an inner arc surface 15c arranged on the rear end surface side of the inclined surface 15b. and By having the inclined surface 15 b , the outer peripheral surface (processed surface) 15 a is inclined with respect to the central axis of the material to be crimped 11 (magnet roll 1 ), and the rollers 15 , 15 , 15 come into contact with the sleeve 2 . The outer peripheral surfaces (processed surfaces) 15a of the rotating rollers 15, 15, 15 come into contact with the ends of the sleeve 2 and press and crimp the ends of the sleeve 2, whereby the sleeve 2 and the flanges 4, 4 are bonded together. Fixation is made.

FIG. 9 is a diagram showing transition of deformation of the sleeve 2 in the caulking process. FIG. 9A shows the state before crimping, in which the undeformed sleeve 2 is in contact with the flanges 4 , 4 . Note that the knurls 40 are not shown in FIG.

9B shows the first half of the caulking process, in which the inclined surfaces 15b of the outer peripheral surfaces 15a of the rollers 15, 15, 15 are in contact with the sleeve 2. FIG. In FIG. 9B the length of the arrow represents the magnitude of the force applied to the end of sleeve 2 . The force applied in the radial direction of the sleeve 2 (arrow d) is greater than the force applied in the axial direction of the sleeve 2 (arrow e), and the end of the sleeve 2 is slightly bent. By adjusting the shape (inclination angle) of the inclined surface 15b, such a magnitude relationship of the applied force can be realized.

FIG. 9C shows the state of the second half (final process) of the caulking process, in which the inner arcuate surfaces 15c of the outer peripheral surfaces 15a of the rollers 15, 15, 15 are in contact with the sleeve 2. FIG. In FIG. 9C, the length of the arrow represents the magnitude of the force applied to the end of the sleeve 2, and the force applied in the axial direction of the sleeve 2 (arrow f) is the force applied in the radial direction of the sleeve 2. Larger than (arrow g), the ends of the sleeve 2 are bent further and bite into the flanges 4,4.

Next, feedback control of the manufacturing apparatus by the sequencer 20 will be described.
FIG. 10 is a flowchart showing the processing procedure of the manufacturing method according to the first embodiment, FIG. 11 is a graph showing an example of load control according to the first embodiment, and FIG. 9 is a graph showing another example; 11 and 12, the horizontal axis indicates time, and the vertical axis indicates the load applied to the material 11 to be crimped in the central axis direction.

The sequencer 20 outputs a control signal to the drive control unit 18a to move the crimping machine mounting base 16 and the crimping machine 14 toward the support base 12 (step S11). Next, the sequencer 20 detects the load applied to the material to be crimped 11 in the rotational axis direction by acquiring the signal output from the load sensor 19 (step S12).

Next, the sequencer 20 determines whether or not the rollers 15, 15, 15 of the crimping machine 14 have come into contact with the ends of the material 11 to be crimped based on the load acquired in step S (step S13). If it is determined that the rollers 15, 15, 15 are not in contact with the end of the material 11 to be crimped (step S13: NO), the sequencer 20 returns the process to step S11 to continue the horizontal movement of the crimping machine 14.

If it is determined that the rollers 15, 15, 15 have come into contact with the end of the material 11 to be crimped (step S13: YES), the sequencer 20 outputs control signals to the motor control units 17a, 17a to perform two crimping operations. The rotation of the rollers 15, 15, 15 of the machines 14, 14 is started (step S14). Next, the sequencer 20 detects the axial load applied to the material 11 to be crimped in the same manner as in step S12 (step S15), and moves the crimping machine mount 16 so as to increase the load applied to the material 11 to be crimped. is controlled (step S16). For example, the sequencer 20 controls the operation of the driving section 18 so that the load applied to the material to be crimped 11 increases linearly as indicated by arrow (1) in FIG. In the sequencer 20, the load applied to the material to be crimped 11 increases linearly as indicated by arrow (1) in FIG. Thus, the operation of the driving section 18 may be controlled. The load control shown in FIGS. 11 and 12 is an example.

Next, the sequencer 20 determines whether or not the load in the central axis direction of the material to be crimped 11 is less than a predetermined value (step S17). If it is determined that the load is less than the predetermined value (step S17: YES), the sequencer 20 returns the process to step S15 to continue the process of gradually increasing the load applied to the material 11 to be crimped.

When it is determined that the load is equal to or greater than the predetermined value (step S17: NO), the sequencer 20 detects the axial load applied to the material to be crimped 11 in the same manner as in step S15 (step S18). As indicated by arrow (2) and arrow (3) in FIG. 12, the load applied to the material to be crimped 11 is controlled to be maintained at a predetermined value (step S19). Next, the sequencer 20 determines whether or not a predetermined time has passed after the load reaches a predetermined value (step S20). If it is determined that the predetermined time has not elapsed (step S20: NO), the sequencer 20 returns the process to step S18 and maintains the state in which the load of the predetermined value is applied to both ends of the material 11 to be crimped.

If it is determined that the predetermined time has elapsed (step S20: YES), the sequencer 20 outputs a stop signal to the motor control units 17a and 17a, and moves the crimping machine mounting bases 16 and 16 away from the support base 12. Thus, the caulking process is stopped (step S21), and the process is finished.

(Second embodiment)
Next, a second embodiment in which the central axes of the rollers 15, 15, 15 are inclined with respect to the central axis of the magnet roll 1 will be described. FIG. 13 is a diagram showing the configuration of a device that performs crimping processing according to the second embodiment, and FIG. 14 is a diagram showing a state in which crimping processing is being performed according to the second embodiment. In FIGS. 13 and 14, the same parts as in FIGS. 3 and 7 are given the same numbers.

In the second embodiment, as in the first embodiment, three rollers 15, 15, 15 are installed on the roller pedestal 14a with a phase angle of 120° in the circumferential direction as shown in FIG. Unlike the first embodiment, the rollers 15, 15, 15 are inclined outward (in a direction away from the central axis) by θ with respect to the central axis of the material 11 to be crimped. The magnitude of θ is, for example, 10°. Since other configurations are the same as those of the first embodiment described above, description thereof will be omitted.

Since the rollers 15, 15, 15 are provided with the central axis inclined outward from the central axis of the material to be crimped 11 (magnet roll 1), compared with the first embodiment, the rollers 15, 15, which are a set of three, are provided. , 15, the cylinder 14b (top cover) for knockout can be easily arranged.

In the second embodiment, as in the first embodiment, during the crimping process, the crimping machine 14 on one side linearly moves in the direction toward the center of the material to be crimped 11 (see arrow a in FIG. 14), and moves in the opposite direction. (see arrow b in FIG. 14), one set of three rollers 15, 15, 15 and the other set of three rollers 15, 15, 15 rotate in opposite directions to each other. At the same time, (a set of three rollers on one side) moves toward the center of the material 11 to be crimped. Then, the outer peripheral surfaces (processed surfaces) 15a of the rotating rollers 15, 15, 15 come into contact with the ends of the sleeve 2 and press and caulk the ends of the sleeve 2, so that the sleeve 2 and the flanges 4, 4 are pressed and crimped. A fixation with is made.

FIG. 15 is a diagram showing cross-sectional shapes of rollers 15, 15, 15 according to the first example of the second embodiment. As in the first embodiment, the outer peripheral surfaces (processed surfaces) 15a of the rollers 15, 15, 15 are arranged on an inclined surface 15b that spreads from the tip end surface to the rear end surface and on the rear end surface side of the inclined surface 15b. and an inner arc surface 15c.

In this first example, in the first half of the caulking process, the inclined surfaces 15b of the outer peripheral surfaces 15a of the rollers 15, 15, 15 come into contact with the sleeve 2 (see FIG. 9B). The force (arrow d) applied in the radial direction of the sleeve 2 becomes larger than the force (arrow e) applied in the axial direction of the sleeve 2, and the end of the sleeve 2 is slightly bent. By adjusting the inclination angle .theta. of the rollers 15, 15, 15 with respect to the central axis of the material 11 to be crimped and/or the shape (inclination angle) of the inclined surface 15b, such magnitude relationship of the applied force can be realized. In the latter half of the caulking process, the inner arcuate surfaces 15c of the outer peripheral surfaces 15a of the rollers 15, 15, 15 come into contact with the sleeve 2 (see FIG. 9C). The force applied in the axial direction of the sleeve 2 (arrow f) becomes greater than the force applied in the radial direction of the sleeve 2 (arrow g), and the ends of the sleeve 2 are further bent and bite into the flanges 4,4.

FIG. 16 is a diagram showing cross-sectional shapes of rollers 15, 15, 15 according to a second example of the second embodiment. Unlike the first embodiment and the first example, the outer peripheral surface (processed surface) 15a of the rollers 15, 15, 15 does not have an inclined surface, and has a horizontal surface 15d extending from the front end surface to the rear end surface. and an inner circular arc surface 15c arranged on the rear end surface side of the horizontal surface 15d. In the second example, the rollers 15, 15, 15 do not have inclined surfaces, but the central axes of the rollers 15, 15, 15 are inclined with respect to the central axis of the crimping material 11 (magnet roll 1). As in the first embodiment and the first example, the outer peripheral surface (processed surface) 15a is inclined with respect to the material to be crimped 11 (magnet roll 1), and the rollers 15, 15, 15 come into contact with the sleeve 2.

In this second example, the horizontal surface 15d of the outer peripheral surface 15a of the rollers 15, 15, 15 contacts the sleeve 2 in the first half of the crimping process (see FIG. 9B). The force (arrow d) applied in the radial direction of the sleeve 2 becomes larger than the force (arrow e) applied in the axial direction of the sleeve 2, and the end of the sleeve 2 is slightly bent. By adjusting the inclination angle .theta. In the latter half of the caulking process, the inner arcuate surfaces 15c of the outer peripheral surfaces 15a of the rollers 15, 15, 15 come into contact with the sleeve 2 (see FIG. 9C). The force applied in the axial direction of the sleeve 2 (arrow f) becomes greater than the force applied in the radial direction of the sleeve 2 (arrow g), and the ends of the sleeve 2 are further bent and bite into the flanges 4,4.

Here, a comparison between the crimping method of the present invention (the first embodiment and the second embodiment) and the conventional crimping method will be described.

FIG. 17 is a schematic diagram showing application of a crimping force to the sleeve 2 by a conventional crimping method. In the conventional crimping method, a crimping force (white arrow in FIG. 17) is applied to the sleeve 2 so as to bend the entire peripheral surface of the sleeve 2 at once. In order to bend them all at once, it is necessary to apply a large crimping force. Assuming that the number of grooves 21 formed in the sleeve 2 is 50 and the batch crimping force applied to the sleeve 2 is 750 kgf, one peak is crimped with 15 kgf (=750 kgf/50).

FIG. 18 is a schematic diagram showing application of a crimping force to the sleeve 2 by the crimping method of the present invention. If one roller 15, 15, 15 crimps one crest of the sleeve 2, the load on the sleeve 2 is only 15 kgf×3=45 kgf. In the present invention, the load on the sleeve 2 can be reduced to 6% as compared with the conventional crimping method in which the load on the sleeve 2 is 750 kgf, and it is possible to prevent deterioration of vibration due to the crimping process. In fact, in the present invention, it has been confirmed by simulation verification that sufficient fixation of the sleeve 2 and the flanges 4, 4 can be achieved with a caulking force of 15 kgf.

As described above, in this embodiment, the sleeve 2 and the flanges 4, 4 are fixed by caulking. Therefore, compared with the case of fixing by adhesion treatment, the cost can be reduced because no adhesive is required. In addition, the work space and processing time can be reduced because there is no need to manage the curing of the adhesive. On the other hand, it is possible to solve the problems of the caulking process, such as poor run-out accuracy and susceptibility to deformation (bulging) of the sleeve 2 . Since the load on the sleeve 2 during crimping is small, the amount of deformation of the sleeve 2 is reduced, and the run-out accuracy of the sleeve 2 can be increased. can.

In particular, in this embodiment, since the load applied to the sleeve 2 is increased by electrical feedback control, the load applied to the sleeve 2 during crimping can be controlled more accurately, and the deflection and deformation of the sleeve 2 ( swelling) can be further reduced.
Specifically, by gradually increasing the load applied to the sleeve 2 as shown in FIGS. 11 and 12 , the deflection of the rib and the deformation (bulging) of the sleeve 2 can be reduced more effectively.

Further, by rotating the rollers 15, 15, 15 for a predetermined time while maintaining the load applied to the sleeve 2 at a predetermined value, the ends of the sleeve 2 can be efficiently crimped and firmly fixed.

Further, the rollers 15, 15, 15 can be rotated a plurality of times along the edge portion of the end of the sleeve 2 while maintaining the load applied to the sleeve 2 at a predetermined value. Therefore, the end of the sleeve 2 can be crimped more efficiently, and strong fixation can be obtained.

Furthermore, the rollers 15, 15, 15 can be rotated when the rollers 15, 15, 15 come into contact with the ends of the sleeve 2, that is, before the load is applied to the ends of the sleeve 2. Deformation (bulging) of the sleeve 2 can be suppressed.

Furthermore, by linearly arranging the drive unit 18 on one crimping machine 14 (right side in FIG. 3) and the load sensor 19 on the other crimping machine 14 (left side in FIG. 3) side, the With this arrangement, both ends of the sleeve 2 can be crimped simultaneously, the load applied to the sleeve 2 in the direction of the central axis can be detected, and the amount of movement of the rollers 15, 15, 15 can be feedback-controlled.

Since two sets of three rollers 15, 15, 15 are provided, both ends of the sleeve 2 can be caulked at the same time, and the time required for fixing can be shortened.

The outer peripheral surfaces (processed surfaces) 15a of the rollers 15, 15, 15 are inclined with respect to the axial direction of the material 11 to be crimped, and simultaneously with the rotation of the rollers 15, 15, 15, the rollers are moved in the axial direction of the material 11 to be crimped. Since 15, 15, 15 are moved, the end of the sleeve 2 is efficiently crimped into a curved surface. Therefore, the sleeve 2 bites into the flanges 4, 4 more, so that the sleeve 2 and the flanges 4, 4 are firmly fixed. Further, since the rollers 15, 15, 15 are in point contact with the ends of the sleeve 2, pressure can be applied to the ends of the sleeve 2 efficiently.

One set of three rollers 15, 15, 15 and the other set of three rollers 15, 15, 15 are moved in the axial direction while rotating in mutually opposite directions, so that the end portion of the sleeve 2 is Deformation other than can be suppressed.

In the final process of the crimping process, the inner arcuate surfaces 15c of the outer peripheral surfaces (processed surfaces) 15a of the rollers 15, 15, 15 come into contact with the ends of the sleeve 2, so that the ends of the sleeve 2 are further firmly attached to the flange 4. , 4. At this time, a considerable amount of force is generated to push the sleeve 2 in the axial direction, but since there is already a portion that has been bitten in, a force that slightly bends the sleeve 2 does not lead to deformation of the sleeve 2, resulting in poor dimensional accuracy. No decline occurs.

Knurls 40 are formed at the ends of the flanges 4, 4, and the ends of the flanges 4, 4 are not chamfered. 2 has good biting. Further, since the groove 21 is provided on the outer peripheral surface of the sleeve 2, the rollers 15, 15, 15 come into point contact with the protruding portions other than the groove 21, so that the end of the sleeve 2 is easily bent.

(Third Embodiment)
The background, problems, and solutions regarding the magnet roll 1 of the third embodiment will be described, and finally specific embodiments will be described.
[background]
The flanges 4, 4 of the magnet roll 1 are inserted into the sleeve 2, and the stepped portion 2b inside the sleeve 2 prevents the flanges 4, 4 from entering the sleeve 2 beyond a certain extent. By grinding the inner peripheral surface of the sleeve 2, an annular step is formed over the entire inner peripheral surface of the sleeve 2 as described in the first embodiment. Therefore, the shape of the stepped portion 2b inevitably becomes an R shape.
On the other hand, since the flanges 4, 4 abutting on the stepped portion 2b are made by machining, the edges of the flanges 4 are chamfered by machining or the like because they are sharp after machining.

[assignment]
When the flanges 4, 4 are inserted into the sleeve 2 and the C-chamfered portions of the flanges 4, 4 come into contact with the R-shaped stepped portion 2b on the inner surface of the sleeve 2, The positions of the flanges 4, 4 were not stable, and as a result, the flanges 4, 4 vibrated.

[solution]
Therefore, according to the stepped portion 2b of the sleeve 2, the edge portions 42 of the flanges 4, 4 contacting the stepped portion 2b are rounded.
The rotating body device according to the third embodiment includes a cylindrical sleeve 2, a cylindrical rotating body provided inside the sleeve 2, and fixed to both ends of the sleeve 2 so that the cylindrical rotating body is rotatable. A rotating body device comprising supporting disk-shaped flanges 4, 4, wherein the sleeve 2 comprises a stepped portion 2b into which the inserted flanges 4, 4 are fitted, and the stepped portion 2b has an R shape. An edge portion 42 where the flanges 4, 4 abut against the step portion 2b is subjected to R chamfering, and the step portion 2b and the edge portion 42 have substantially the same shape.
Moreover, it is preferable that the disk-shaped flanges 4, 4 are crimped and fixed to both ends of the sleeve 2. As shown in FIG. As a method for crimping and fixing the flanges 4, 4 to both ends of the sleeve 2, the crimping method according to the first embodiment or the second embodiment may be used. Also, the manufacturing apparatus according to the first embodiment or the second embodiment may be used.
Furthermore, the edge portions 42, which are crimped and fixed to both ends of the sleeve 2 and where the flanges 4, 4 contact the stepped portion 2b, have a shape following the R shape, and the stepped portion 2b and the edge portions of the flanges 4, 4 42 are preferably in surface contact without any gap.
The rotating body device is, for example, the magnet roll 1 .
The cylindrical rotating body has, for example, a permanent magnet member provided with a plurality of magnetic poles extending in the axial direction on its outer peripheral surface.
The sleeve 2 is made of a non-magnetic material that can be plastically worked, and the stepped portion 2b is an annular step formed along the entire circumference of the inner peripheral surface of the sleeve 2. As shown in FIG. The stepped portion 2b has a cross-sectional shape following an arc in a cross section including the central axis.
The flanges 4, 4 rotatably support the cylindrical rotor. The flanges 4, 4 are fitted to the stepped portion 2b of the sleeve 2, and the ends of the sleeve 2 are bent and fixed so that the flanges 4, 4 are fixed to both ends of the sleeve 2, thereby forming a magnet roll. 1 is configured.

[effect]
By matching the shapes of the abutting portions, the R-chamfered portions of the flanges 4, 4 can be accurately positioned with respect to the stepped portion 2b, and the deflection accuracy of the flanges 4, 4 is improved.
In particular, the stepped portion 2b and the edge portions 42 of the flanges 4, 4 come into surface contact without gaps, and the flanges 4, 4 are crimped and fixed to both ends of the sleeve 2, thereby preventing the flanges 4, 4 from rattling. It can be fixed to both ends of the sleeve 2, and the deflection accuracy of the flanges 4, 4 is improved.

19 is a vertical cross-sectional view showing the configuration of the sleeve 2 and flanges 4, 4 according to the third embodiment, and FIG. 20 is an enlarged vertical cross-sectional view showing the configuration of the sleeve 2 and flanges 4, 4 according to the third embodiment. . 19A shows the state before the flanges 4, 4 are fitted to the end of the sleeve 2, FIG. 19B shows the state where the flanges 4, 4 are fitted to the end of the sleeve 2, and FIG. 19C shows the state after caulking. ing.

The main points are that the sleeve 2 is cylindrical and made of a plastically deformable non-magnetic metal material, and that the flanges 4, 4 are disk-shaped and made of a non-magnetic metal material such as non-magnetic stainless steel. The configuration of the magnet roll 1 is the same as that of the first embodiment, and the shape of the stepped portion 2b of the sleeve 2 and the shape of the edge portions 42 of the flanges 4, 4 contacting the stepped portion 2b are different from those of the first embodiment. different.

Specifically, as described in the first embodiment, the stepped portion 2b of the sleeve 2 is an annular stepped portion extending over the entire inner peripheral surface of the sleeve 2 and has an R shape. In a longitudinal section including the central axis of the sleeve 2, the stepped portion 2b has a cross-sectional shape following an arc.

The portions of the flanges 4, 4 that come into contact with the stepped portion 2b of the sleeve 2, that is, the edge portion 42 of the disc surface are chamfered in the same shape as the stepped portion 2b. In a longitudinal section including the central axes of the flanges 4, 4, the edge portion 42 has a cross-sectional shape following the arc. In the above example, the edge portions 42 of the flanges 4, 4 may also be chamfered with an R of 0.2 mm. Therefore, when the flanges 4, 4 are inserted into the sleeve 2 and the edge portions 42 of the flanges 4, 4 come into contact with the stepped portion 2b of the sleeve 2, the stepped portion 2b of the sleeve 2 and the edge portions of the flanges 4, 4 42 are in surface contact with no gap.

FIG. 21 is an enlarged longitudinal sectional view showing the configuration of a conventional sleeve 2 and flanges 104,104. In FIG. 21, the shape of the stepped portion 102b of the sleeve 2 is the same as that of the third embodiment, except that the edge portions 142 of the flanges 104, 104 are chamfered. When the flanges 104, 104 are inserted into the sleeve 2 and the C-chamfered flanges 104, 104 come into contact with the stepped portion 102b having an R, the positions of the flanges 104, 104 relative to the sleeve 2 are not stable as shown in FIG. , and as a result, deflection of the flanges 104, 104 occurs.

On the other hand, in the case of the sleeve 2 and the flanges 104, 104 according to the third embodiment, since the flanges 104, 104 with R chamfering are in contact with the stepped portion 102b of the sleeve 2 having an R, the stepped portion 102b The edge portions 142 of the flanges 104, 104 come into surface contact with each other without gaps, and the positions of the flanges 104, 104 with respect to the sleeve 2 are stabilized.
Therefore, according to the third embodiment, deflection of the flanges 104, 104 can be effectively suppressed.

It should be noted that the disclosed embodiments should be considered illustrative in all respects and not restrictive. The scope of the present invention is indicated by the scope of the claims rather than the above description, and is intended to include all modifications within the scope and meaning of equivalents of the scope of the claims.

REFERENCE SIGNS LIST 1 magnet roll 2 sleeve 2b stepped portion 3 magnet member 4a (4) flange 4b (4) flange 5 magnet 6 shaft
6a shaft shaft portion 7 bearing 10 base 10a guide rail 10b sensor support portion 11 caulking material 12 support base 12a slider 13 fixture 14 caulking machine 14a roller base 14b cylindrical body 15 roller 15a outer peripheral surface (machined surface)
15b Inclined surface 15c Inner circular arc surface 15d Horizontal surface 16 Crimping machine mount 16a Slider 17 Rotary motor 17a Motor control unit 17b Motor amplifier 18 Drive unit 18a Drive control unit 18b Drive amplifier 18c Drive mechanism 19 Load sensor 19a Sensor amplifier 20 Sequencer 21 Groove 40 Knurl 41 Flange Shaft 42 Edge

Claims (3)

A rotating body device comprising a cylindrical sleeve, a cylindrical rotating body provided inside the sleeve, and disk-shaped flanges fixed to both ends of the sleeve and supporting the cylindrical rotating body,
The sleeve has a stepped portion in which the inserted flange is fitted,
The stepped portion has an R shape, and an edge portion where the flange contacts the stepped portion has a shape following the R shape. A rotating body device comprising a cylindrical sleeve, a cylindrical rotating body provided inside the sleeve, and disk-shaped flanges crimped and fixed to both ends of the sleeve to support the cylindrical rotating body,
The sleeve has a stepped portion in which the inserted flange is fitted,
The stepped portion has an R shape, and an edge portion where the flange contacts the stepped portion has a shape following the R shape. A rotating body device comprising a cylindrical sleeve, a cylindrical rotating body provided inside the sleeve, and disk-shaped flanges crimped and fixed to both ends of the sleeve to support the cylindrical rotating body,
The sleeve has a stepped portion in which the inserted flange is fitted,
The stepped portion has an R shape, and the edge portion where the flange contacts the stepped portion has a shape following the R shape, and the stepped portion and the edge portion of the flange are in surface contact without a gap. rotator device.

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