JP2547972Y2 - Jig for press-fitting device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jig for positioning a press-fitting component such as a shaft when press-fitting a press-fitting component such as a shaft into a hole of the asymmetrical press-fitting component such as a cam.

[0002]

2. Description of the Related Art In a case where a component to be press-fitted is a cam having an asymmetrical shape and a shaft as a press-fitting component is press-fitted into a hole thereof, conventionally, as shown in FIGS. On a, a base circle d of a cam c whose outer shape is coaxial with a hole b is supported by a V-shaped receiving portion f of a fixing member e, and the cam top g side has a V-shaped receiving portion h. After the cam c is positioned between the fixed member e and the movable member j by a movable member j pressed against the cam top g by a spring i, a shaft k as a press-fitting part is moved. Press-fit (FIG. 5) into hole b of cam c.

[0003]

By the way, when the center of the hole b with respect to the base circle d of the cam c is displaced either vertically or horizontally as shown in FIG.
0.07), no coaxiality of the shaft k to be press-fitted can be obtained, and in particular, if the hole b is shifted in the direction in which the thickness of the base circle d increases, there is no escape place. Is bent, and a biased frictional force is generated on the side surface of the hole b, which may lead to the occurrence of galling. At present, a countermeasure is required.

[0004]

Means for Solving the Problems Here, the present invention has been proposed.
Is a press-fit part(17)Parts to be pressed against(8)Position of
In the jig to be decided, the jig body(3),
Dowel pins in several places(4)The lower part of the jig where the planted(1)
And these knock pins(4)Through hole to be inserted(5)To
YesOnlyPress-fitted parts(8)Positioning means(16)To
Jig upper(2)And divided into the through holes(5)
Insert the knock pin (4) into the O-ring (6)
InsertionA jig for a press-fitting device that is supported
You.

[0005]

In the apparatus having the above-mentioned construction, after the component to be press-fitted is mounted on the upper part of the jig by the positioning means, the upper part of the jig is not shown when the component to be press-fitted is pressed into the hole of the component to be press-fitted. Since the O-ring can freely move relative to the lower part of the jig fixed to the main body of the press-fitting device by the elastic deformation of the O-ring, the press-fitting component can be press-fitted even if the hole of the press-fitted component is uneven. .

[0006]

1 to 3, which show one embodiment of the present invention, in which the component to be press-fitted is a cam having an asymmetrical shape, and a shaft as a press-fitting component is press-fitted into its hole. Will be described. A jig main body 3 is divided into a jig lower part 1 fixed to the main body of the press-fitting device not shown and an upper part 2 of the jig on the lower part of the jig. Knock pin 4
On the other hand, the jig upper part 2 is provided with through holes 5 through which the dowel pins 4 are to be inserted. is there. (See FIG. 3).

On the jig upper part 2, a press-fitted part whose outer shape is coaxial with the hole 7, that is, a base circle 9 of the cam 8.
And a movable member 15 having a V-shaped receiving portion 13 to support the cam top 12 and pressed against the cam top 12 by a spring 14. Thus, after the cam 8 is positioned, the shaft 17 as a press-fitting part is press-fitted toward the hole 7 as described above.

[0008]

As described above, according to the device of the present invention, after the component to be press-fitted is mounted on the upper part of the jig by the positioning means, the component to be press-fitted is pressed into the hole of the component to be press-fitted. Since the upper part of the jig can be freely displaced relative to the lower part of the jig within the range of elastic deformation of the O-ring, even if there is a slight deviation in the position of the hole of the part to be pressed, this can be corrected. This has the effect of absorbing the elastic displacement of the upper part of the tool and preventing the press-fitting part from being disturbed.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of one embodiment of the device of the present invention.

FIG. 2 is a plan view of the device shown in FIG.

FIG. 3 is an enlarged sectional view of a portion A in FIG. 1;

FIG. 4 is a plan view of a conventional device.

FIG. 5 is a side view of a conventional device.

FIG. 6 is a plan view showing a deviation of a hole to be coaxial with a base circle of a cam as a part to be pressed.

[Explanation of symbols]

1 jig bottom 2 jig top 3 jig body 4 knock pin 5 through hole 6 O-ring 8 to be press-fit section parts (cam) 16 positioning means 17 press-fitted parts (shaft)

Claims (1)

(57) [Scope of request for utility model registration] 1. A part to be press-fitted into a press-fit part (17) .
(8) In the jig to be positioned, the jig body
And (3), and the jig bottom (1) was implanted a knock pin (4) at a plurality of locations, positioning of the press-fitting parts One only have a hole to be inserted through these Notsukupin (4) (5) (8) Means
(16) and a jig upper part (2), and the knock pin is attached to an O-ring (6) mounted in the through hole (5).
A jig for a press-fitting device, wherein the jig (4) is inserted and supported.