JPH0448894Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a washer assembly device for assembling a washer member having a diameter different from that of the workpiece onto the axial end face of a substantially cylindrical workpiece. It is.

(Prior art) When attempting to automatically assemble a washer member having a diameter different from that of the work on the axial end face of a substantially cylindrical work, the axis of the work, such as a gear, and the washer member to be assembled is determined. It is necessary to match the However, if the outer and inner diameters of a work such as a gear and the outer and inner diameters of a washer member are different, it is very difficult to align the axes of the two, and this is a problem in automating washer assembly. I was getting used to it.

In addition, as a conventionally known related technology, Japanese Patent Application Laid-open No. 59
As described in Japanese Patent No. 102,540, a device has already been proposed in which a center pin is moved as a guide to guide the nut and spacer in alignment to the end of the attached member (ie, screw shaft).

(Problems to be Solved by the Invention) When the above-mentioned known technology is applied to members having approximately the same inner diameter, such as a nut and a spacer, it is easy to align the axes of both members with a guide using a center pin. When applied to assembling members with greatly different inner and outer diameters (for example, a gear and a washer), it is extremely difficult to align the axes of both members, so the above-mentioned known technology is applied to a washer assembling device. That's difficult.

This invention was made in view of the above points,
To make it extremely easy to assemble a washer member by aligning the axes of an assembling operation part in an assembling device and the workpiece and assembling the washer member to the workpiece using the outer diameter surface of the washer member as a reference. The purpose is to

(Means for Solving the Problems) In the present invention, as a means for solving the above problems, an outer diameter smaller than the outer diameter of the workpiece is attached to the axial end face of the approximately cylindrical workpiece. A washer assembly device for assembling a ring-shaped washer member having an inner diameter larger than the inner diameter, the washer assembly having a substantially tapered guide surface on the inner diameter surface and an outer diameter surface abutting the inner diameter surface of the workpiece. a guide jig that has a cylindrical shape and is arranged to penetrate through the work and partially protrudes outward from an axial end surface of the work; a work support that supports the work; and an outer diameter of the washer member. It has a cylindrical shape with a slightly larger inner diameter, is driven forward and backward in opposition to the axial end surface of the workpiece on the workpiece support, and is brought into contact with the axial end surface of the workpiece prior to assembly of the washer member. a guide member that guides the outer diameter surface of the washer member; a centering member that aligns the center of the workpiece with the center of the washer member; and a centering member located between the guide member and the centering member, which is driven forward and backward in opposition to the axial end surface of the workpiece, and moves the washer member. and a push-out member that presses against the axial end surface of the workpiece and is fitted and assembled into the protruding member of the guide jig.

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

That is, the washer member is driven forward and backward in opposition to the axial end surface of the workpiece on the workpiece support, has an inner diameter slightly larger than the outer diameter of the washer member, and is brought into contact with the axial end surface of the workpiece before assembling the washer member. The washer member supplied into the guide member that comes into contact with the guide member and serves as a guide for the outer diameter surface of the washer member is guided by the inner wall of the guide member with its outer diameter surface guided by the push-out member that slides inside the guide member to push the workpiece. is pressed against the axial end face of the workpiece and assembled to the workpiece. Therefore, the washer assembly is performed with the axes of the workpiece and the washer member aligned.

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

The washer assembling device of this embodiment has an axial end surface 2a of a planetary gear 2, which is a substantially cylindrical workpiece.
On the other hand, it is used for assembling a washer member (in the case of this embodiment, the thrust washer 5) having an outer diameter smaller than the outer diameter of the planetary gear 2 and an inner diameter larger than the inner diameter of the planetary gear 2. be.

The planetary gear 2 includes a generally cylindrical guide jig (in the case of this embodiment, a dummy shaft 9 ) is disposed through the dummy shaft 9, and the end of the dummy shaft 9 projects outward from the axial end surface 2a of the planetary gear 2. Thus, the planetary gear 2 is to be transported and supplied as an assembled part W that is disposed through the dummy shaft 9.

The washer assembly device of this embodiment includes a workpiece support 1 that holds a planetary gear 2 (in other words, a part to be assembled W), and an axial end surface 2a of the planetary gear 2 held by the workpiece support 1. and a planetary gear 2 on the workpiece support 1 inside the assembling device main body 3 provided at right angles.
A cylindrical guide member 4 is provided so as to be movable forward and backward coaxially with the planetary gear 2 while facing the axial end surface 2a of the axial direction end face 2a of the cylindrical guide member 4; , and a center pin 7 slidably provided within the extrusion member 6. Note that the dummy shaft 9
is a shaft temporarily attached to assemble the thrust washer 5 to the planetary gear 2.

A planetary gear 2 is carried in and out of the workpiece support 1 by a lift-and-carry type transfer device 8, and the planetary gear 2 is carried in so that the dummy shaft 9 is in a horizontal state. The workpiece is held by the workpiece support 1.

The assembly device main body 3 is composed of a base portion 3a and a support portion 3b formed on the base portion 3a at a position adjacent to the workpiece support 1 and loosely fittingly supports the guide member 4. .

The guide member 4 is a cylindrical member having an inner diameter slightly larger than the diameter of the thrust washer 5 to be assembled to the planetary gear 2, and is installed on the base portion 3a of the assembly device main body 3. It is adapted to be slid by an air cylinder 10 which acts as an actuator for the member.

This guide member 4 is connected to the assembly device main body 3.
is driven forward and backward from the end surface of the support part 3b to the position where it abuts the axial end surface 2a of the planetary gear 2 held by the workpiece support 1 (in other words, from the state shown in FIG. 1 to the state shown in FIG. 3). Prior to assembly of the thrust washer 5, it is brought into contact with the axial end surface 2a of the planetary gear 2 and serves as a guide for the outer diameter surface of the thrust washer 5.

In addition, a slit-shaped washer supply port 11 for supplying the thrust washer 5 is provided at a suitable position at the tip of the upper part of the guide member 4. It is configured to be able to communicate with the channel 12. Reference numeral 13 denotes a connecting member 14 that connects the air cylinder 10 and the guide member 4 in an interlocking manner.
24 is a position center for regulating the stroke of the air cylinder 10, and 24 is a guide rod for guiding the connecting member 13.

The extrusion member 6 presses the thrust washer 5 against the axial end surface 2a of the planetary gear 2, fits into the protrusion of the dummy shaft 9, and is assembled, and also serves as a guide when transporting the workpiece after the washer is assembled. It has a sliding hole 15 configured so that the center pin 7 acting as a centering member can be slidably disposed therein, and the front end surface 6a of the sliding hole 15 is a thrust washer supplied into the guide member 4. It is made into a flat surface so that 5 can be pressed. The sliding hole 15 has a center pin 7
It consists of a large diameter part 15a on which the boss part 7a of the center pin 7 slides, and a small diameter part 15b on which the pin part 7b of the center pin 7 slides. Thus, the extrusion member 6 and the center pin 7 are both attached to the base portion 3 of the assembly device main body 3.
a, and is adapted to be slid by air cylinders 16 and 17, which act as actuators for the pusher member and center pin, respectively. In addition, air cylinder 1
6 and the extrusion member 6, and the air cylinder 17 and the center pin 7 are connected through connection members 18 and 19, respectively. and the air cylinder 17.
A window hole 20 is formed through which the window 9 can be viewed.

In the return position, the extrusion member 6 is in a position where its front end surface 6a is slightly retracted from the washer supply port 11 (that is, the distance between the washer supply port 11 and the extrusion member front end surface 6a is the same as that of the thrust washer 5 supplied from the washer supply port 11). The front end surface 6a of the thrust washer 5 acts to press the thrust washer 5 against the axial end surface 2a of the planetary gear 2 in the forward movement position. The position of the push-out member 6 when it moves forward is determined by a dial gauge 21 provided on the support portion 3b of the assembly device main body 3.
Based on the measured value, it is determined whether one thrust washer 5 has been reliably assembled to the axial end surface 2a of the planetary gear 2. Reference numeral 22 is the extrusion member 6
This is a reference piece provided on the push-out member 6 to be brought into contact with the dial gauge 21 when the push-out member 6 moves forward.

The pin portion 7b of the center pin 7 is configured to be inserted into the dummy shaft 9 of the planetary gear 2, and when the center pin 7 is advanced, the pin portion 7b is inserted into the dummy shaft 9. centering of the planetary gear 2 (i.e., planetary gear 2 and thrust washer 5)
(center coincidence) is now being carried out.
Note that the forward stroke of the center pin 7 is regulated by a position sensor 23. Reference numeral 25 is a guide rod for guiding the connecting member 19.

Next, the operation of the illustrated washer assembling device will be explained.

When the thrust washer 5 is carried into the workpiece support 1 by the transport device 8, the guide member 4 and the center pin 7 are in the returned state and only the extrusion member 6 is in the forward state, as shown in FIG. The planetary gear 2 is carried in while being guided by the front end surface 6a of the extrusion member 6. Thereafter, when the pushing member 6 is returned to its original position by the operation of the air cylinder 16 and the guide member 4 is advanced by the operation of the air cylinder 10, the front end surface of the guide member 4 is brought into contact with the axial end surface of the planetary gear 2, as shown in FIG. 2a, and a passage toward the axial end surface 2a of the planetary gear 2 is formed within the guide member 4. Therefore, the thrust washer 5 is supplied into the guide member 4 from the washer supply port 11. At this time, the thrust washer 5 is not excessively tilted due to the position of the front end surface 6a of the extrusion member 6. Thereafter, the center pin 7 is moved forward by the operation of the air cylinder 17, and its pin portion 7b is inserted into the dummy shaft 9 of the planetary gear 2 to center the planetary gear 2 (see Fig. 4). The thrust washer 5 is moved forward by the operation of the cylinder 16, and is pressed against the axial end surface 2a of the planetary gear 2, thereby fitting and assembling it into the protrusion of the dummy shaft 9 (see Fig. 5). . At this time, the thrust washer 5 is pressed by the extrusion member 6 while its outer diameter surface is guided by the inner wall of the guide member 4, so that the thrust washer 5 and the planetary gear 2 can be aligned extremely easily. Further, when the thrust washer 5 has been assembled by the extrusion member 6, it is confirmed by the dial gauge 21 whether one thrust washer 5 has been reliably assembled to the planetary gear 2. When the assembly of the thrust washer 5 to the planetary gear 2 is completed, the center pin 7 and the guide member 4 are returned to their original positions by the operation of the air cylinders 17 and 10 (see FIG. 6), and the planetary gear 2 is moved using the front end surface 6a of the extrusion member 6 as a guide. is carried out by the conveying device 8, and at the same time, the next planetary gear 2 is carried in.

As described above, according to this embodiment, with the axes of the planetary gear 2 and the thrust washer 5 aligned, the thrust washer 5 is rotated while the outer diameter surface of the thrust washer 5 is guided by the inner wall of the guide member 4
Even if the thrust washer 5 has an outer diameter smaller than the outer diameter of the planetary gear 2 and an inner diameter larger than the shaft hole of the planetary gear 2, it can be assembled to the planetary gear 2 extremely easily. be.

It should be noted that the present invention is not limited to the illustrated embodiment, and it goes without saying that the design can be modified as appropriate without departing from the gist of the invention.

(Effects of the invention) As described above, according to the invention, the workpiece is driven forward and backward in opposition to the axial end surface of the workpiece on the workpiece support,
A washer that has an inner diameter slightly larger than the outer diameter of the washer member and is supplied into a guide member that comes into contact with the axial end face of the workpiece and guides the outer diameter surface of the washer member prior to assembly of the washer member. With the workpiece and the guide member aligned by inserting the centering member into the guide jig disposed through the workpiece, the outer diameter surface of the member is aligned with the inner wall of the guide member. Since the extrusion member that slides inside the guide member while being guided is pressed against the axial end surface of the workpiece and assembled, the workpiece has an outer diameter smaller than the outer diameter of the workpiece and an inner diameter larger than the inner diameter of the workpiece. Even a washer member has the practical effect of being able to be automatically assembled to a workpiece extremely easily.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional plan view of a washer assembling device according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken from FIG. 1, and FIGS. 3 to 6 are a washer assembling device according to an embodiment of the present invention. FIG. 3 is a cross-sectional view of a main part showing various states during operation. 1... Work support, 2... Work (planetary gear), 2a... Axial end face, 4... Guide member, 5... Washer member (thrust washer),
6... Extrusion member, 7... Centering member (center pin), 9... Guide jig (dummy shaft), 11
... Washer supply port, W ... Parts to be assembled.

Claims (1)

[Scope of utility model registration request] A washer assembly device for assembling a ring-shaped washer member having an outer diameter smaller than the outer diameter of the workpiece and an inner diameter larger than the inner diameter of the workpiece to an axial end surface of a substantially cylindrical workpiece, It has a substantially cylindrical shape having a substantially tapered guide surface on its inner diameter surface and an outer diameter surface that contacts the inner diameter surface of the workpiece, and is arranged to penetrate the workpiece and extend outward from the axial end surface of the workpiece. a guide jig that partially protrudes from the workpiece, a workpiece support that supports the workpiece, and a cylindrical shape having an inner diameter slightly larger than the outer diameter of the washer member; a guide member that is driven forward and backward opposite the end face and comes into contact with the axial end face of the workpiece to guide the outer diameter surface of the washer member prior to assembly of the washer member; a centering member that is driven forward and backward opposite the direction end face and is slidably inserted into the inner diameter surface of the guide jig to align the center of the workpiece with the center of the washer member; The washer member is located between the centering member and is driven forward and backward in opposition to the axial end surface of the workpiece, and presses the washer member against the axial end surface of the workpiece to fit and assemble into the protrusion of the guide jig. A washer assembling device characterized by comprising an extrusion member.