JPH0833287A - Method and jig for assembling split tubular body - Google Patents

Abstract

PURPOSE:To assemble split components into a tubular body accurately with high efficiency. CONSTITUTION:The jig 1 for assembling a plurality of components P split in the circumferential direction into a tubular body comprises a center jig 3 being inserted detachably in the axial direction, component holding means 4 narrower than the split component P supported movably in the radial direction of the center jig 3, and a cam 10 for pressing each component holding means 4 toward the axis of the center jig 3 substantially in synchronism therewith. The component holding means 4 comprises a horizontal supporting part 5a for supporting the split component P on the rear surface and the inner circumference thereof, a vertical supporting part 5b, and a clamp lever 6 for clamping the split component P against the vertical supporting part 5b such that the split component P can be released.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a divided cylindrical body assembly jig and an assembling method for assembling divided parts obtained by dividing a cylindrical body in the circumferential direction into a cylindrical body.

[0002]

2. Description of the Related Art In recent years, downsizing and high performance of basic parts have been advanced, and the difficulty of assembling such parts is increasing. Therefore, if the operator's skill is relied upon, the accuracy is likely to vary and the working time will be long. For example, as a method for manufacturing a motor stator, a method has been proposed in which the stator is divided into a plurality of pieces in the circumferential direction, each divided stator is wound and then assembled, and a stator having a high space factor is produced by such a manufacturing method. Although it is possible to manufacture a compact and high-performance motor, it is required to develop a jig that can assemble the split stator efficiently and highly accurately.

A conventional assembling jig and method for assembling divided parts will be described below with reference to FIG. In FIG. 6, the assembly jig 21 is assembled around the center jig 22 and the center jig 22 that serves as a reference of the inner surface when joining the divided parts (divided stators) P of the cylindrical body (stator). Upper and lower rings 2 for tightening each of the divided parts P from the outside so as to position each of the divided parts P at a predetermined joining relation position regulated by the center jig 22.
It is composed of 3 and 24. This upper and lower ring 2
3 and 24 are divided into two parts, and each divided part P is tightened by a split tightening method in which two divided rings are brought together.

A concrete work of joining the divided parts P and assembling them into a cylindrical body will be described. First, the upper ring 23.
To remove the split tightening by the lower ring 24.

Next, an operator arranges the divided parts P around the center jig 22 with the outer peripheral surface thereof as a reference, and arranges the divided parts P into a circular cylinder in the annular space between the center jig 22 and the lower ring 24. Arrange it to form a body. However, in this case, the divided parts P are still in the middle and the center jig 22.
Since there is a gap and play between and, the proper joint relation position is not satisfied. Therefore, the center jig 22 is fitted by fitting the upper ring 24 with the loosened tightening loosely to the outer circumference of each of the divided parts P, and by alternately splitting the lower ring 24 and the upper ring 23. A cylindrical body positioned as a reference is assembled, joined by various methods such as adhesion and laser welding, and integrated.

[0006]

However, in the cylindrical body assembling method using the above-mentioned conventional assembling jig 21, there are many operations that require skill of the operator and therefore, accuracy is likely to vary. There's a problem. Further, in the split tightening with the upper and lower rings 23 and 24, the center jig 22
There is a problem that the cylindricity of the inner surface is difficult to be obtained because the pressing force in the centripetal direction toward the arrow does not act uniformly on each divided part P.
In addition, when the center jig 22 is pulled out after the joining and integration, there is a problem that the inner surface of the cylinder is damaged due to friction between the inner surface of the cylinder and the center jig 22, and the inner surface of the cylinder is damaged.

In view of the above conventional problems, it is an object of the present invention to provide an assembling jig for a divided cylindrical body and an assembling method capable of assembling a cylindrical body from divided parts with high accuracy and high efficiency. And

[0008]

According to a first aspect of the present invention, there is provided a jig for assembling a divided cylindrical body, which is used for assembling a divided body obtained by dividing a cylindrical body into a plurality of pieces in a circumferential direction into a cylindrical body. A center jig that can be inserted and removed in the axial direction, a component holding means that has a width narrower than the width of the divided parts and that is movably supported in the radial direction of the center jig and holds each divided part, And a pressing means for pressing the component holding means toward the axis of the center jig almost in synchronism.

[0009] Preferably, the component holding means is capable of releasing the horizontal support portion that supports one end of the split component, the vertical support portion that supports the inner periphery of the split component, and the split component between the vertical support portion. The holding means includes a holding means for holding, and the holding means is composed of a swingable clamp lever that is urged to rotate toward the holding position of the divided body.

Further, the jig for assembling the divided cylindrical body of the second invention of the present application is a component which is movable in the radial direction with respect to a fixed axis and which positions and holds each divided component in the same radial position. It is characterized in that it is provided with a holding means and a moving means for synchronously moving each component holding means toward the center jig.

The method of assembling a divided cylindrical body according to the third aspect of the present invention is a method of assembling divided parts obtained by dividing a cylindrical body into a plurality of pieces in the circumferential direction into a cylindrical body, and holding and assembling each divided part. It is characterized in that the divided parts are arranged in a cylindrical shape by moving in a substantially radial direction toward the axial center position of the power cylindrical body, and both circumferential side surfaces of the divided parts abutting each other are joined. .

[0012]

According to the first invention of the present application, after the divided parts are held by the respective parts holding means, the parts holding means are pressed toward the center jig axis substantially in synchronization with each other to contact the center jig. By making contact with each other, the divided parts can be automatically assembled toward the center jig while being aligned, and the position of the divided parts can be adjusted by the center jig, so that the divided parts can be assembled efficiently and highly accurately. After joining the split parts, pull out the center jig, release the holding by the part holding means, and move the part holding means toward the center jig axis. The cylindrical body can be taken out while maintaining the cylindricity and without damaging the inner surface.

Further, the component holding means is constituted so that the divided component is supported by the horizontal supporting portion, and the inner circumference and the outer periphery of the divided component are clamped between the vertical supporting portion and the clamping means, and the clamping means is clamp lever. With the above configuration, the structure of the holding means is simple and the accuracy can be easily ensured, and the holding and releasing operations of the divided parts are also easy.

According to the second invention of the present application, the component holding means is synchronized with the divided component positioned and held at the same position in the radial direction on the component holding means which is movable in the radial direction toward the fixed axis. By moving the divided parts toward the fixed axis, the divided parts move in a position-regulated state toward the position where the cylindrical body is formed, and the part holding means is moved at the position where the divided part forms the cylindrical body. By stopping, the divided parts can be assembled efficiently and highly accurately, and by releasing the holding, the cylindrical body can be taken out.

Further, according to the third invention of the present application, the divided parts are respectively held and moved toward the axial center position of the cylindrical body substantially in the radial direction so as to arrange the divided parts in a cylindrical shape, By joining the circumferentially opposite side surfaces of each of the divided parts that are in contact with each other, the cylindrical body can be efficiently assembled from the divided parts.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which a jig for assembling a split cylinder of the present invention is applied to the assembly of a cylindrical stator in a motor will be described below with reference to FIGS.

The jig 1 for assembling the divided parts of this embodiment is shown in FIG.
As shown in FIG. 5, the divided parts P having a shape obtained by dividing the cylindrical body into a plurality of pieces in the circumferential direction are gathered in the centripetal direction indicated by the arrow to position each divided part P at a predetermined joining relation position,
The stator is assembled by joining the divided parts P to each other.

In FIG. 1, a center jig 3 serving as a reference for positioning the divided parts P at a predetermined joining relational position is erected in the center of the table 2 in such a manner that it can be inserted and removed. The component holding means 4 for individually sandwiching the divided parts P from inside and outside in the radial direction are arranged by the same number as the necessary divided parts P.

Each of the component holding means 4 stands upright from the horizontal supporting portion 5a for supporting the lower surface of the divided component P and the end of the horizontal supporting portion 5a on the side of the center jig 3 to receive the inner peripheral surface of the divided component P. A component holding jig 5 having a supporting portion 5b, and an intermediate portion pivotally supported by a shaft 7 on a horizontal supporting portion 5a of the component holding jig 5 so as to divide the component P between the vertical supporting portion 5b.
Is provided with a clamp lever 6 that releasably clamps.
The component holding jig 5 and the clamp lever 6 have a width smaller than that of the divided component P. The clamp lever 6 is urged to swing in a direction of sandwiching the split component 1 by a spring 8 interposed between the clamp lever 6 and the horizontal support portion 5a.

The horizontal support portion 5a of the component holding means 4
Are movably supported in the perspective direction with respect to the center jig 3 by linear guides 9 radially arranged around the center jig 3 on the table 2.

Further, cam followers 11 and 13 are provided at the upper end and the lower end of the clamp lever 6, respectively.
Above the cam follower 11, the cam 10 facing them is provided.
The cam 12 is arranged below the cam follower 13. Each cam 10, 12
The corresponding calofollowers 11 and 13 are arranged at equal intervals on the circumference of the same axis as the center jig 3 so as to push the calofollowers 11 and 13 toward the center jig 3 side, that is, inward in the radial direction to a predetermined position.

In the above construction, the clamp lever 6 is swung in the direction for releasing the clamp against the spring 8 by hand or an actuator (not shown), and the vertical support portion 5b.
Between the vertical support portion 5b and the clamp lever 6 in this open state, and then the clamp lever 6 is opened to hold the clamp lever 6 by the spring 8. 1 and 4 (a), the divided component P is radially sandwiched between the vertical support portion 5b and the clamp lever 6 as shown in FIGS.

Next, by lowering the cam 10 to a predetermined position, as shown in FIGS. 2 and 4 (b), the cam 1
0 and the cam follower 11 come into contact with each other to hold each component 4
Is pushed inward in the radial direction, and each component holding jig 5
The vertical support portion 5b is closely attached to the outer peripheral surface of the center jig 3 without play, and the vertical support portion 5b is separated from the vertical support portion 5b.
Is closely attached to the clamp lever 6 without play,
The position of each divided part P is properly adjusted to a predetermined joining relation position. That is, the position of each divided part P is automatically adjusted by the outer peripheral surface of the center jig 3 through the vertical support portion 5b without any variation or time-consuming work as in the case of manual operation. Thus, the cylindrical body assembled state in which each divided part P is positioned with high accuracy so as to be in the predetermined joining relation position can be efficiently obtained in a short time.

In the assembled state of this cylindrical body, the adjacent joint surfaces of the divided parts P are adhered to each other, or the adjacent parts of the divided parts P are appropriately welded by using a laser. , It is possible to join and integrate while maintaining a highly accurate assembled state. As the joining and unifying method, it is preferable to select one that satisfies the conditions required according to the application such as the bonding strength.

Next, as shown in FIGS. 3 and 4 (c),
After pulling out the center jig 3 and raising the cam 10 to a predetermined upper position, and then raising the cam 12 to a predetermined position, the clamp lever 6 is separated by the contact between the cam 12 and the cam follower 13. The clamp lever 6 is swung in the direction to release the clamping from the outside in the radial direction.
At the same time as a gap is created between the cylinder body and the cylindrical body, the horizontal support portion 5a moves inward in the radial direction due to the contact between the clamp lever 6 and the horizontal support portion 5a, so that the inner surface of the cylindrical body and the vertical support portion 5b are separated. Since a gap is formed, the cylindrical body can be taken out without damaging the cylindrical body and without impairing the cylindricity of the inner surface of the cylindrical body, and finally a highly accurate cylindrical body can be efficiently obtained.

After that, by lowering the cam 12 to a predetermined position, as shown in FIG. 4 (d), each component holding means 4 is moved outward in the radial direction to return to the original position, and the center jig 3 is held. Is inserted into a predetermined axial center position and erected, and the clamp lever 6 is swung in the direction to release the clamp as described above to insert the split component 1. By repeating the above operation, a cylindrical body is obtained. To be

In the above embodiment, the center jig 3 is provided, and the component holding jig 5 of the component holding means 4 is brought into close contact with the center jig 3 to perform the position regulation of the divided parts P, whereby the highly accurate position regulation can be easily performed. Although an example is shown, if each component holding means 4 is configured to move in a highly accurate synchronous manner toward a predetermined axial center position, the divided component P positioned and held by the component holding means 4 is predetermined. Can be positioned at the joining relation position, and by joining adjacent divided parts P in that state, a highly accurate cylindrical body can be obtained.

[0028]

According to the divided cylindrical body of the first invention of the present application,
As described above, the divided parts are held by the respective parts holding means, and the parts holding means are pressed substantially synchronously toward the center jig axis and brought into contact with the center jig to arrange the divided parts. Positioning can be performed with the center jig while automatically assembling toward the center jig as it is, and the divided parts can be assembled efficiently and with high accuracy. By pulling out the tool, the cylindricity at the time of joining can be maintained and the cylindrical body can be taken out without damaging the inner surface.

Further, the component holding means is constituted so that the divided component is supported by the horizontal supporting portion, and the inner periphery and the outer periphery of the divided component are clamped between the vertical supporting portion and the clamping means, and the clamping means is clamp lever. With the above configuration, the structure of the component holding means is simple, the accuracy can be easily ensured, and the holding and releasing operations of the divided components are also easy.

Further, according to the second invention of the present application, the component holding means is synchronized with the divided component positioned and held at the same position in the radial direction on the component holding means movable in the radial direction toward the fixed axis. Then, the divided parts are moved toward a fixed axis, and the movement of the part holding means is stopped at the position where the divided parts form a cylindrical body, so that the divided parts can be efficiently and accurately assembled, and the holding is released. As a result, the cylindrical body can be taken out.

Further, according to the third invention of the present application, the divided parts are respectively held and moved substantially in the radial direction toward the axial center position of the cylindrical body to arrange the divided parts in a cylindrical shape, By joining the circumferentially opposite side surfaces of each of the divided parts that are in contact with each other, the cylindrical body can be efficiently assembled from the divided parts.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a jig for assembling a divided cylindrical body according to an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view showing a joined state of the divided cylindrical bodies in the example.

FIG. 3 is a vertical cross-sectional view showing a state in which the cylindrical body is taken out after assembly in the embodiment.

FIG. 4 is a plan view showing a process of assembling the divided cylindrical body in the embodiment.

FIG. 5 is a perspective view of a divided cylindrical body.

FIG. 6 is a perspective view showing an assembling jig and an assembling method for a divided cylindrical body of a conventional example.

[Explanation of reference numerals] 1 assembly jig 3 center jig 4 component holding means 5 component holding jig 5a horizontal support 5b vertical support 6 clamp lever 8 spring 10 cam P split parts

 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Tsutomu Yanagimoto 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (5)

[Claims] 1. An assembly jig used to assemble a divided part obtained by dividing a cylindrical body into a plurality of pieces in the circumferential direction into a cylindrical body, the center jig being insertable and removable in the axial direction, and the width of the divided part. Has a narrow width and is movably supported in the radial direction of the center jig, and holds each of the divided parts, and the respective part holding means are pressed substantially in synchronization with the axis of the center jig. A jig for assembling a divided cylindrical body, comprising a pressing means. 2. The component holding means releasably clamps the horizontal support portion that supports one end of the split component, the vertical support portion that supports the inner periphery of the split component, and the split component between the vertical support portion. The jig for split cylinder assembly according to claim 1, further comprising a holding means. 3. The jig for assembling a split cylindrical body according to claim 2, wherein the sandwiching means comprises a swingable clamp lever which is urged to rotate toward the sandwiching position of the split body. 4. An assembly jig used to assemble a divided part obtained by dividing a cylindrical body into a plurality of parts in the circumferential direction into a cylindrical body, wherein the divided part is movable in a radial direction with respect to a fixed axis and each divided part is An assembly jig for a split cylindrical body, comprising: component holding means for positioning and holding the same in the radial direction, and moving means for synchronously moving the respective component holding means toward a fixed axis. . 5. A method of assembling a divided part obtained by dividing a cylindrical body into a plurality of pieces in the circumferential direction into a cylindrical body, wherein each divided part is held in the radial direction substantially toward the axial center position of the cylindrical body to be assembled. A method for assembling a divided cylindrical body, characterized in that the divided parts are arranged in a cylindrical shape by being moved in synchronism with each other, and both circumferential side surfaces of the divided parts that are in contact with each other are joined.