JPH0248185Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a ring-shaped member insertion device for inserting a bearing, a snap spring, etc. into a drive shaft or the like.

(Prior Art) Conventionally, when inserting a ring-shaped member such as a bearing into a long shaft object, an insertion device for that purpose has been used, but for example, a thin member such as a snap spring, etc.
Moreover, since the half-shaped one is easily deformed,
It is installed manually in a separate process. As shown in FIG. 8, this type of device includes, for example, a press-fitting jig 5 into which the axle 3 is fitted in order to insert the bearing 1 and the retainer 2 between the axle 3 and the rotating body 4. In order to improve work efficiency, the cross section of this press-fitting jig 5 is approximately semicircular as shown in FIG. 9, and a groove 6 is formed so that it can be fitted from the front with the axle 3 vertical. are doing. One end of the press-fitting jig 5 is open in a substantially semicircular shape so that the axle 3 can be extended and placed thereon, while the other end is open to the side wall 7.
is formed. A first support center 8 that supports the center of one end of the axle 3 is attached to this side wall 7 via a spring member 9, which is shown schematically.
The other end of the press-fitting jig 5 and the outside of the side wall 7 is fixed to the tip of a piston 12 of a cylinder 11 attached to a machine stand 10. On the other hand, the center of the other end of the axle 3 is in contact with a second support center 14 attached to the machine base 10 via a support block 13.

With this configuration, before fitting the axle 3 into the press-fitting jig 5, the rotating body 4, bearing 1, and retainer 2 are loosely fitted by hand from one end of the axle 3.
After that, fit the axle 3 into the groove 6 of the press-fitting jig 5,
When one end of the bearing 1 is brought into contact with the first support center 8 and the other end is brought into contact with the second support center 14, and the cylinder 11 and the piston 12 press it in the direction of the second support center 14, the bearing 1 and the retainer 2 are moved to a predetermined position. It is pressed into position and inserted. After that, when inserting the snap ring 15 next to the retainer 2, take out the axle 3 from the press-fit jig 5, loosely fit the snap ring 15 from one end of the axle 3, and then insert the snap ring 15, which is formed separately, into the axle 3. Fit the cylindrical snap spring press-fitting jig 16 as shown in FIG.
It is attached to the snap spring groove 17 by repeatedly applying impact force to it. In this manner, since the press-fitting jig 5 has a substantially semicircular cross section, the snap spring 15 is easily deformed when it is press-fitted by this device, so it is attached manually in a separate process.

(Problems to be solved by the invention) In the conventional configuration described above, the insertion of the snap spring must be done manually, which requires a large amount of work and requires repeated application of impact force for insertion. There is a problem that poor insertion occurs due to this.

Therefore, the present invention was devised to solve the above-mentioned problems, and consists of a pair of half-shaped press-fitting auxiliary jigs that move forward and backward relative to a long shaft that is fitted into a press-fitting jig that has an approximately semicircular cross section. It is an object of the present invention to provide a ring-shaped member insertion device that can simultaneously insert a plurality of ring-shaped members using the above-mentioned methods, has high productivity, and has good quality of insertion.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a pressing means for pressing from at least one side of a press-fitting jig having a substantially semicircular groove for press-fitting a ring-shaped member into a long shaft. In the insertion device provided, the press-fitting jig is removably supported by a driving means with respect to the elongated shaft between the end of the press-fitting jig and the insertion position of the ring-shaped member of the elongated shaft. The structure includes a pair of half-shaped press-fitting auxiliary bodies that are slidably supported by the holding force of the elastic member biased in the direction and the pressing force of the press-fitting jig.

(Function) With the above configuration, first, a plurality of ring-shaped members, including a thin half-shaped ring member to be inserted, are loosely fitted by hand from one end of the elongated shaft. after that,
Hold the long shaft vertically and fit the press-fit auxiliary body into the groove of the press-fit jig with the open body. When the pair of press-fitting auxiliary bodies is closed by the driving means, the cross section becomes ring-shaped and surrounds the elongated shaft. Next, when one end of the long shaft is supported stationary and the press-fitting jig is pressed by the pressing means, the press-fitting auxiliary body slides against the holding force of the elastic member, and the ring-shaped end surface is halved. A plurality of ring-shaped members, including those with a thin shape, can be press-fitted and inserted into predetermined positions of a long shaft at the same time.

(Example) An example of the present invention will be described below based on the drawings. First, FIGS. 1 and 2 show a ring-shaped member insertion device 18 of the present invention, and FIG. 1 shows a bearing 1, a retainer 2, and a snap ring as ring-shaped members attached to the axle 3 of a rotating body 4 as a long shaft object. 15 are loosely fitted and placed on the press-fitting jig 5. FIG. 3 shows a state in which the press-fitting jig 5 press-fits each ring-shaped member loosely fitted onto the axle 3 into a predetermined position and inserts the ring-shaped members. The annular member insertion device 18 shown in FIGS. 1 and 3 has parts in common with the conventional device shown in FIG. The explanation thereof will be omitted by indicating.

In the present invention, a press-fitting auxiliary jig 19 is attached to the annular member insertion device already described with reference to FIG. As shown in FIG. 1, this press-fitting auxiliary jig 19 includes a second support center 14 that supports the press-fitting jig 5 and one of the axle 3 used as a long shaft object.
It is provided on the mounting base 20 so as to cross the longitudinal direction of the device. A cylinder 22 equipped with a pair of pistons 21 is attached to the mounting base 20 as a driving means that can move forward and backward from both sides with respect to the axle 3, and sliding blocks 23, 23 are attached to the tips of each piston 21, 21. It is being The sliding block 23 has T as shown in FIGS. 2 and 4.
A press-fitting auxiliary body 25 is attached, which has a groove 24 and is formed to fit into this T-groove 24 and to be able to slide against each other. As shown in FIGS. 2 and 4, the press-fitting auxiliary body 25 has a substantially semicircular cross section, thereby forming a groove 26 over its entire length. Further, as shown in FIG. 5, one end forms a stepped portion 17a to receive the snap ring 15. The curvature of the groove 26 substantially matches that of the outer periphery of the axle 3, or the groove 26 is formed to be somewhat smaller. Therefore, as shown in FIG.
22 is activated and in contact with the axle 3, it forms a ring shape surrounding the axle 3. and,
Returning to FIG. 1, one end of a spring member 27 is attached as an elastic member to the sliding block 23 on the side of the press-fitting jig 5 already explained above, and the other end is formed at one end of the press-fitting auxiliary body 25. It is attached to the attached attachment part 28.

Here, a cylinder 22 equipped with a piston 21 is used as a driving means, but this may be an electric motor provided together with other link mechanisms, a hydraulic motor, or any other type. Further, although the spring member 27 is used as the elastic member, it may be a cylinder equipped with a piston or the like. Furthermore, the ring insertion device of the present invention uses a well-known sequence control device, hydraulic or pneumatic pressure generating device for its operation.

With the above-described structure, the annular member insertion device 18 of the present invention has a bearing 1, a retainer 2, and a half-shaped thin plate for attaching the rotating body 4 to the axle 3, which would otherwise be deformed in the conventional insertion device. In order to simultaneously install the snap spring 15 shown in FIGS. 6 and 7, which would cause the
As shown in Fig. 1, press-fit jig 5 and press-fit auxiliary jig 1
9 operates each cylinder 11, 22 and returns it to its original position. Then, the rotating body 4, bearing 1, retainer 2, and snap spring 15 are loosely fitted to the axle 3 at once by hand near the insertion position. Next, this axle 3 is fitted into the groove 6 of the press-fitting jig 5, the center of one end is brought into contact with the first support center 8, and the center of the other end on the side of the rotating body 4 is brought into contact with the second support center 1.
4 to support. After that, as shown in Figure 3,
Activate each cylinder 22 of the press-fitting auxiliary jig 19,
The press-fitting auxiliary body 25 is advanced toward the axle 3 to surround the axle 3, and the ring-shaped section thereof is formed larger than the outer periphery of the snap spring 15, and a stepped portion for the snap spring 15 is formed therein. 1
7a is formed, so the snap spring 1
5. The retainer 2, the bearing 1, and the rotating body 4 can be pressed in this order. Next, by operating the cylinder 11 equipped with the piston 12, the press-fitting jig 5 is
When the press-fitting jig 5 is moved forward, its tip surface presses against the pair of press-fitting auxiliary bodies 25 against the holding force of the spring member 9 (not shown). The press-fitting auxiliary body 25 is
It slides against the holding force of the spring member 27 and presses the snap spring 15. By this pressing, the retainer 2, bearing 1, and rotating body 4 are inserted into predetermined positions, and the snap ring 15 is fitted into the snap ring groove 17 by its own spring force. The details are shown in FIG. In this way, even a thin, half-shaped snap ring 15 that is easily deformed can be inserted at the same time by this device.

(Effects of the invention) From the above, the present invention is capable of halving a conventional press-fitting jig having an approximately semicircular cross section by bringing a half-shaped press-fitting auxiliary jig into contact with the end face of the conventional press-fitting jig, which has an approximately semicircular cross section. A ring-shaped member insertion device has been realized that can be inserted simultaneously with other ring-shaped members even if the shape is thin, such as a snap spring, which increases productivity, reduces the occurrence of insertion errors, and can be easily attached to conventional devices.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view showing the annular member insertion device of the present invention before press-fitting the annular member, FIG. 2 is a cross-sectional view indicated by arrow A-A in FIG. 1, and FIG. FIG. 4 is a schematic plan view showing a state in which the ring-shaped member has been inserted, and FIG. 4 is a sectional view taken along arrow B-B in FIG. 3. FIG. 6 is an enlarged view of the snap spring indicated by arrow C in FIG. 5, FIG. 7 is a sectional view indicated by arrow D-D in FIG. 6, and FIG. 8 is a schematic plan view showing a conventional ring-shaped member insertion device. Figure 9 shows arrows E-E in Figure 8.
10 is a side view showing a state in which the snap ring is manually inserted. 1, 2, 4, 15...ring-shaped member (bearing,
retainer, rotating body, snap spring), 3... Long shaft object (axle), 5... Press-fit jig, 6... Groove, 1
1, 12...pressing means (cylinder, piston),
15...Snat spring, 18...Annular member insertion device, 21, 22...Driving means (piston, cylinder), 25...Press-fitting auxiliary body, 27...Elastic member (spring member).

Claims (1)

[Claims for Utility Model Registration] An insertion device provided with a pressing means for pressing from at least one side of a press-fitting jig having a substantially semicircular groove for press-fitting a ring-shaped member into a long shaft object, comprising: an end portion of the press-fitting jig; and the insertion position of the ring-shaped member of the elongated shaft, the holding force of an elastic member that is removably supported by a driving means with respect to the elongated shaft and is biased in the direction of the press-fitting jig. and a pair of half-shaped press-fit auxiliary bodies slidably supported by the press of the press-fit jig.