JPH091427A - Position correction device for pin holes formed in component parts of joint - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a correction device capable of easily performing a position correction work for aligning the position of a pin hole with a predetermined position and correcting the position of the pin hole with high accuracy. [Structure] A rotating member 10 into which a pin hole forming portion 5 of a first joint member 2 having a pin hole 6 is inserted, and a holding device 8 holding a second joint member 4 are attached to a base plate 9. The guide holes 17 of the rotating member 10 are moved by the moving means 19, 20, 21, 22.
A correction pin 18, which is slidably inserted therein and is insertable into the pin hole 6, is moved in the axial direction. The rotation member 10 is rotated to insert the correction pin 18 across the guide hole 17 and the pin hole 6, and in this state, the first joint member 2 together with the rotation member 10 reaches the predetermined position of the pin hole 6. Is further rotated until the relative position of the pin hole 6 with respect to the second joint member 4 is corrected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for correcting the position of a pin hole formed in a component member of a joint such as a ball joint of a tie rod used for a steering device of an automobile.

[0002]

2. Description of the Related Art A pin hole is formed in a constituent member of a joint such as a ball joint so as to insert a split pin or the like for attachment to a mating member. Generally, the position (direction) of the pin hole is not particularly considered when the joint is assembled by each component. However, when attaching the assembled joint to the mating member, the pin hole formed in this mating member and the pin hole formed in the mating member should be concentrically arranged and split across both pin holes. You will be inserting pins. Therefore, in order to smooth the attachment of the joint to the mating member, it is important to align the pin hole position formed in the joint member with a predetermined position in consideration of the pin hole position of the mating member in advance.

[0003]

However, the position correcting work for aligning the positions of the pin holes formed in the constituent members of the joint to a predetermined position is performed only by hand, and the man-hour of the correcting work is increased and the correction work is required. In some cases, sufficient accuracy could not be ensured.

The present invention has been devised in view of such a conventional situation. The position correction work for aligning the position of the pin hole with a predetermined position can be easily performed, and the position of the pin hole can be corrected accurately. The purpose is to provide a possible correction device.

[0005]

SUMMARY OF THE INVENTION Therefore, according to the present invention, a first joint member having a pin hole formed in a pin hole forming portion, and a second joint member assembled to the first joint member so as to be rotatable relative to each other. A holding device for holding the second joint member, a base on which the holding device is arranged and fixed, and an insert for rotatably attached to the base for inserting the pin hole forming portion of the first joint member A rotary member having a hole and a guide hole opening to the insertion hole, a motor for rotating the rotary member, and a correction pin slidably inserted into the guide hole of the rotary member and insertable into the pin hole. , A moving means for axially moving the correction pin and inserting the pin across the guide hole and the pin hole, and rotating the rotary member from an arbitrary position to guide the correction pin. And the pin hole, and in this state, insert the first joint member into the rotary member. The pin hole is rotated further until a predetermined position, it is arranged to modify the relative position of the pin hole for the second catch member.

[0006]

According to the present invention, the second joint member is rotatably assembled to the first joint member having the pin hole forming portion to form the joint, and the pin hole forming portion of the first joint member is connected to the rotating member. The second joint member is attached to the holding device while being inserted into the insertion hole.
After that, while the rotating member is being rotated by the motor, the moving device moves the correction pin inserted into the guide hole toward the pin hole forming portion of the first joint member. When the guide hole and the pin hole are concentrically aligned with each other, the correction pin inserted into the guide hole further moves toward the pin hole and is inserted across the guide hole and the pin hole.

In this state, the first joint member is further rotated together with the rotating member until the pin hole reaches a predetermined position.

After the pin hole reaches the predetermined position, the rotation of the rotating member is stopped, the correcting pin is returned into the guide hole by the moving means, and the holding of the second joint member by the holding device is released. The joint member can be taken out from the insertion hole.

As a result, the relative position of the pin hole of the first joint member with respect to the second joint member of the joint is corrected.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a block diagram of a position correcting device for a pin hole formed in a constituent member of a joint, showing an embodiment of the present invention.
In the figure, reference numeral 1 denotes a joint, which is composed of a ball stud 2 which is a first joint member and a tie rod 4 which is a second joint member having a socket 3 which receives the ball stud 2. The ball stud 1 includes a shaft-shaped pin hole forming portion 5, and a pin hole 6 is formed in the pin hole forming portion 5. A male screw 7 is provided on the outer periphery of the pin hole forming portion 5.
Is formed. The ball stud 2 of the joint 1 can be bent and rotated in an arbitrary direction by applying a predetermined force in a state of being assembled to the socket 3 of the tie rod 4.

Reference numeral 8 is a holding device for holding the tie rod 2.
A well-known hydraulic clamp device or the like is used as the holding device 8, and a base 9 is provided via an auxiliary member 9a arranged at a predetermined position.
It is installed on the top.

Reference numeral 10 denotes a rotary member, which is composed of a plate portion 11 and a shaft portion 12, and the shaft portion 12 is rotatably attached to the base 9 through a bearing 13. Thereby, the rotating member 10 is rotatable with respect to the base plate 9.

The plate portion 11 of the rotating member 10 is the plate member 1
4 and a receiving member 15 that receives the lower surface and the side surface of the plate member 14, and the plate member 14 has the ball stud 2
Insertion hole 16 for inserting the pin hole forming portion 5 and the insertion hole 1
A guide hole 17 is formed across diametrically 6 and opens into this insertion hole 16. A correction pin 18 is slidably inserted into the guide hole 17, and the correction pin 18 can be inserted into the pin hole 6 of the ball stud 2. The guide hole 17 is provided with intake and exhaust ports 19 and 20 for operating air which are open at both end portions facing each other with the insertion hole 16 and the correction pin 18 interposed therebetween. The intake and exhaust ports 19 and 20 are provided with an intake and exhaust pipe 21 and an intake and exhaust pipe 21, respectively. It communicates with a pneumatic pressure source (not shown) via a switching valve 22. The intake / exhaust ports 19 and 20, the intake / exhaust pipe 21, and the intake / exhaust switching valve 22 constitute moving means for the correction pin 18.
The correction pin 18 is movable in the guide hole 17 by the working air guided to the suction and discharge ports 19 and 20. Further, in the guide hole 17, stop members 23 and 24 for limiting the movement of the correction pin 18 and a position detection sensor 25 for the correction pin 18 are arranged at predetermined positions facing each other with the insertion hole 16 and the correction pin 18 sandwiched therebetween. , 26 are included. In addition, this guide hole 17
Both ends of the opening are sealed by plugs 27 and 28 screwed and fixed to the receiving member 15.

The shaft portion 12 of the rotating member 10 is formed in a hollow shape, and the tip of the shaft portion 12 faces the insertion hole 16 of the plate portion 11 inside the hollow portion, and the ball stud 2 inserted in the insertion hole 16 is inserted. A positioning pin 29 for positioning in the axial direction (vertical direction in FIG. 1) is screwed and fixed. Further, a harness 30 connected to the suction / discharge pipe 21 and the position detection sensors 25, 26 is housed in the hollow inside on the outer peripheral side of the positioning pin 29, and the suction / discharge pipe 21 and harness 30 are connected to the shaft portion 12. Oblique hole 31 formed in the upper part,
It is led out via 31 and is connected to the intake / exhaust ports 19 and 20 or the position detection sensors 25 and 26, respectively.

Further, the gear 3 is provided on the outer periphery of the substantially central portion of the shaft portion 12.
2 is attached, and this gear 32 meshes with a gear 35 attached to a drive shaft 34 that is rotationally driven by a motor 33. Therefore, when the motor 33 rotates, the shaft portion 1 passes through the drive shaft 34 and the gears 35 and 32.
Rotating member 1 supported by bearing 13 when 2 rotates.
0 will rotate.

Further, a disc 36 is provided on the outer periphery of the lower end of the shaft portion 12.
The rotary position detecting dog 37 is attached to the outer periphery of the disk 36. This rotation position detection dog 3
Numeral 7 is attached so as to correspond to the direction in which the guide hole 17 is bored, and cooperates with the rotational position detection sensor 38 attached to the fixed member 9b integral with the base 9 to position the guide hole 17 in the rotational direction. To detect.

Reference numeral 39 denotes a work discharging device attached to the auxiliary member 19a, which includes a cylinder 39a and a piston rod 3.
9b and by projecting the piston rod 39b with respect to the cylinder 39a, the joint 1 can be taken out from the pin hole position correcting device.

Reference numeral 40 denotes a control device, which is the position detecting sensor 2
5, 26 and the detection signals from the rotational position detection sensor 38 and the like are input to control the operation of the intake / exhaust switching valve 22, the motor 33, the work delivery device 39 and the like.

Reference numerals 41 and 42 are bearings mounted on the base 9 and the fixing member 9b, respectively, for rotatably supporting the drive shaft 34.

In such a structure, the ball stud 2 of the joint 1 can be bent and rotated in an arbitrary direction by applying a predetermined force in a state of being assembled with the socket 3 of the tie rod 4. Ball stud 2 in the state
The pin hole 6 formed in the
It remains in the assembled state and faces any direction. Therefore, first, the joint 1 having the pin hole 6 in an arbitrary direction is attached to the holding device 8. Specifically, when the positioning pin 29 is operated to insert the pin hole forming portion 5 of the ball stud 2 into the insertion hole 16 of the rotating member 10, the ball stud 2
1. The height of the pin hole 6 is adjusted so that it can be aligned horizontally with the guide hole 17 of the rotating member 10 in FIG.
The pin hole forming portion 5 of the ball stud 2 is inserted into the insertion hole 16 of the rotating member 10. In this inserted state, the tie rod 4 is attached and fixed to the holding device 8 (see FIG. 2).

Next, under the control of the control device 40, while rotating the rotating member 10 by the motor 33, the intake / exhaust switching valve 22 is operated to introduce the working air from the intake / exhaust port 19 and exhaust it from the intake / exhaust port 20. . As a result, the correction pin 18 inserted in the guide hole 17 is moved toward the pin hole forming portion 5 of the ball stud 2. At this time, when the guide hole 17 and the pin hole 6 of the ball stud 2 are not concentric, the rotation of the rotary member 10 is continued with the tip of the correction pin 18 in contact with the outer periphery of the pin hole forming portion 5 (Fig. 3). The correction pin 18 contacts the pin hole forming portion 5 of the ball stud 2, and the correction pin 18 slightly presses the ball stud 2 in the lateral direction.
This pressing force is small and the ball stud 2 is tie rod 4
Bending does not work against. Further, although the male hole 7 is formed in the pin hole forming portion 5 of the ball stud 2 and the surface has unevenness, the correction pin 18 is pressed by the working air, so that the pin hole forming portion 5 smoothly follows. Keep in contact with 5.

When the rotary member 10 further rotates and reaches the position where the guide hole 17 and the pin hole 6 of the ball stud 2 are concentrically aligned with each other, a moving force is given by the working air introduced from the intake / exhaust port 19. The correction pin 18 further moves from the guide hole 17 toward the pin hole 6, and the guide hole 17 and the pin hole 6
It is inserted across and, and the tip thereof comes into contact with the stop member 24 and stops (see FIG. 4). This state is detected by the position detection sensor 26, and this detection signal is input to the control device 40. At this time, the rotational position detection dog 37 and the rotational position detection sensor 38 provided on the disk 36 detect whether or not the rotational direction position of the pin hole 6 is at a predetermined position. That is, the rotational position detection dog 37 is provided so as to coincide with the drilling direction of the guide hole 17, and the rotational position detection sensor 38 is arranged at a predetermined position in the rotational direction to be corrected of the pin hole 6 that is aligned with the guide hole 17. Since it is provided, the rotation position detection sensor 38 cooperates with the rotation position detection dog 37 to detect whether or not the rotation direction position of the pin hole 6 is at a predetermined position.

When the position of the pin hole 6 in the rotation direction is not at the predetermined position, the rotation of the rotary member 10 is continued while the correction pin 18 is inserted across the guide hole 17 and the pin hole 6. When the rotation continues and the rotation position detection sensor 38 detects the completion of the movement of the rotation position detection dog 37 to the predetermined position (see FIG. 8), that is, when the pin hole 6 reaches the predetermined position in the rotation direction. The signal is input to the control device 40, and the rotation of the motor 33 is stopped by the signal from the control device 40, and the rotation of the rotating member 10 is stopped (see FIG. 5).

Next, the intake / exhaust switching valve 22 is actuated so that the working air is introduced from the intake / exhaust port 20 and exhausted from the intake / exhaust port 19, so that the correction pin 18 is retracted into the guide hole 17. The rear end of the correction pin 18 comes into contact with the stop member 23 to stop the retreat, and the completion of the retreat is detected by the position detection sensor 25, and its signal is sent to the controller 40.
(See FIG. 6).

Thereafter, the rotating member 10 is rotated in the opposite direction to return to the initial position, the fixed holding of the tie rod 4 by the holding device 8 is released, and the work take-out device 39 is operated to move the piston rod 39b in FIG. By operating in the upward direction, the joint 1 can be taken out (see FIG. 7). In order to rotate the rotary member 10 to return it to the desired position, the rotary member is rotated 180 degrees from the state shown in FIG. 6, or the rotary position detecting dog 37 as shown in FIG.
This can be carried out by providing the initial position confirmation dog 43 at the facing position and detecting the initial position by the initial position confirmation dog 43 and the rotational position detection sensor 38.

As a result, the relative position of the pin hole 6 of the ball stud 2 with respect to the tie rod 4 of the joint 1 is corrected, and the position of the pin hole 6 in the rotational direction is corrected to a predetermined position.

Therefore, the position correction work for aligning the position of the pin hole 6 formed in the ball stud 2 which is a component of the joint 1 with a predetermined position can be easily performed, and the position of the pin hole 6 can be corrected with high accuracy. A corrective device can be obtained.

Although the embodiment has been described above with reference to the drawings, the specific structure is not limited to this embodiment,
Changes can be made without departing from the spirit of the invention. For example, although the working intake air is used to move the correction pin 18, working oil may be used. Further, although the embodiment of the ball joint has been described, it goes without saying that the present invention is not limited to this.

[0030]

As described above in detail, according to the present invention, the first joint member having the pin hole formed in the pin hole forming portion and the first joint member are rotatably assembled to each other. Second
A joint member, a holding device for holding the second joint member, a base on which the holding device is arranged and fixed, and a rotatably attached to the base, and a pin hole forming portion of the first joint member. A rotating member having an insertion hole to be inserted and a guide hole opened to the insertion hole, a motor for rotating the rotating member, and a guide member of the rotating member so as to be slidably inserted into the pin hole. Correction pin and moving means for axially moving the correction pin to insert the pin across the guide hole and the pin hole, and rotating the rotating member from an arbitrary position to correct the correction pin. Is inserted across the guide hole and the pin hole, and in this state, the first joint member is further rotated together with the rotating member until the pin hole reaches a predetermined position, and the relative position of the pin hole with respect to the second joint member. By modifying the above, the components of the joint 1 are The position of the pin holes formed in the first catch member position correction operation is simply performed for aligning the predetermined position, and accurately pin holes modifiable correction device position is obtained.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a correction device showing an embodiment of the present invention.

FIG. 2 is a drawing showing an initial state in which the pin hole forming portion of the first joint member is inserted into the insertion hole, and is a cross-sectional view of essential parts taken along the line AA of FIG.

FIG. 3 is a drawing similar to FIG. 2, showing a state in which a rotating member is rotated.

FIG. 4 is a view similar to FIG. 2, showing the correction pin inserted over the guide hole and the pin hole.

FIG. 5 is a view showing a state in which the pin hole is corrected to a predetermined position, FIG.
FIG.

FIG. 6 shows a state in which the correction pin is retracted into the guide hole,
It is the same drawing as FIG.

FIG. 7 shows a state in which the rotating member is returned to the initial position, FIG.
FIG.

FIG. 8 is an explanatory diagram showing a state in which a predetermined position is detected by a rotation position detection dog and a rotation position detection sensor.

FIG. 9 is an explanatory diagram showing a state in which an initial position is detected by an initial position confirmation dog and a rotational position detection sensor, which are provided at opposite positions of the rotational position detection dog.

[Explanation of symbols]

 1 joint 2 ball stud (first joint member) 4 tie rod (second joint member) 5 pin hole forming part 6 pin hole 8 holding device 9 base plate 10 rotating member 16 insertion hole 17 guide hole 18 correction pin 19, 20 suction / discharge port ( Moving means) 21 Intake / exhaust pipe (moving means) 22 Intake / exhaust switching valve (moving means) 33 Motor

Claims (1)

[Claims] 1. A first joint member having a pin hole formed in a pin hole forming portion, a second joint member rotatably assembled to the first joint member, and a second joint member held therein. A holding device, a base on which the holding device is disposed and fixed, an insertion hole into which the pin hole forming portion of the first joint member is inserted and a guide which is rotatably attached to the base and which opens into the insertion hole. A rotary member having a hole, and a motor for rotating the rotary member,
A correction pin slidably inserted into the guide hole of the rotating member and insertable into the pin hole, and the correction pin is moved in the axial direction so that the pin extends over the guide hole and the pin hole. And a rotating member is rotated from an arbitrary position to insert the correction pin across the guide hole and the pin hole. In this state, the first joint member together with the rotating member is inserted into the pin hole. Further rotating until reaching a predetermined position to correct the relative position of the pin hole with respect to the second joint member,
A device for correcting the position of a pin hole formed in a member constituting a joint.