JPH1043832A - Caulking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To execute sure caulking by reducing the insufficient caulking of parts and the buckling and deformation of caulking pins. SOLUTION: A caulking heat part 2 is provided with a motor 21 for rotating a punch, a cylinder 22 operating up and down by an air pressure, a vibrator 23 for slightly moving up and down a caulking punch 31 at the time of descending the caulking head 2, and the caulking punch 31 installed with several degrees of inclination with respect to the axial direction. Caulking pins 41-44 are fixed onto a work part 50, and the work part 50 is provided with a self alignment function by a spring 52. By this way, caulking pins are excellently caulked with a small axial force under a state closer to a hand caulking, an excellent caulking shape is obtained without being influenced by the positioning precision of caulking pins and parts, whereby productivity is improved and the caulking of stable quality is executed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a caulking device and, more particularly, to a caulking device for caulking a pin with a caulking punch attached to a tip of a caulking head by a vertical motion of a caulking head.

[0002]

2. Description of the Related Art FIG.
FIG. 4 is an enlarged view of a caulking head and a caulking pin.
Shown in

In the conventional caulking device, a caulking head portion 2 having a cylinder 22 which moves up and down by air pressure,
An XY axis 1 for moving the caulking head 2, a caulking punch 3 attached vertically to the tip of the caulking head 2 on the same axis as the caulking head 2, and a component fixing work 51. The caulking operation of the caulking pins 41 to 44 is performed. As shown in FIG.
A concave portion 41a is formed at the center of the hole, and a portion 41b around the concave portion 41a is crushed by the punch 3 and caulked.

Next, the operation will be described. First, the component 61 and the component 62 are placed on the work part 51, and the caulking pins (4
1 to 44) are set in the component opening 63 so as to protrude from the component 61. The XY axis 1 first moves the caulking head portion 2 vertically above the caulking pin 41 to be caulked first. Next, the cylinder 22 is lowered, and the punch 3 comes into contact with the upper end of the caulking pin 41 and caulks the caulking pin 41 with the axial force of the air pressure, thereby forming the part 61.
And the part 62 are fastened. Thereafter, the caulking head 2 moves up, and the XY axis 1 moves upward to the second caulking pin 42 which is caulked. These series of operations are performed by
By repeating for 44, the parts 61 and 6
2 is concluded.

[0005]

However, there is a problem that it is difficult to obtain a good caulking state with the conventional caulking device.

The reason is that first, a caulking punch is attached to the tip of the caulking head portion on the same axis as the caulking head portion, and the caulking pin is caulked only by the axial force by the vertical movement by the air pressure of the cylinder. Therefore, the caulking state depends on the axial force and the direction in which the axial force is applied to the caulking pin.If the position where the axial force is applied and the position of the caulking pin are slightly deviated, the caulking pin This is because they cannot be buckled or buckle easily.

Second, since the caulking pin and the part are completely fixed to the work part, the caulking pin, the part, and the work part do not have a degree of freedom, and if the positional accuracy of the caulking pin and the part is poor, the caulking is performed. This is because the pin for use is deformed or the crimped shape and the crimped state are deteriorated.

[0008] An object of the present invention is to provide a caulking device capable of obtaining a good caulked shape and a caulked state without changing the caulking pin.

Another object of the present invention is to caulk a caulking pin in a state closer to caulking with a smaller axial force (independent of the axial force) and fine movement of the punch when the cylinder is lowered. An object of the present invention is to provide a caulking device in which a buckling pin is less likely to buckle.

Another object of the present invention is to provide a work part having a self-alignment function so that the work part can be finely moved in accordance with a caulking punch when caulking, so that the positional accuracy of the caulking pins and components can be improved. To provide a caulking device which is not affected by

[0011]

In order to solve the above-mentioned problems, the caulking device according to the present invention is provided with a rotating means (21 in FIG. 1) for rotating the caulking punch. Thereby, since the punch hits the caulking pin while rotating, even if the position of the punch and the position of the pin are slightly shifted, the shift can be corrected by the rotation of the punch,
A good caulking state is obtained.

In this case, the swaging punch (31 in the figure) may be inclined with respect to the vertical direction. By inclining the punch, the axial direction of the punch can be changed, so that the caulking pin can be caulked in a state closer to caulking.

Further, a vibrating means (23 in FIG. 1) for vibrating the caulking punch in a vertical direction is provided. By slightly moving the punch up and down when the cylinder descends, the contact between the punch and the pin repeats daily, and the punch gradually caulks the pin, so there is less contact friction, with a smaller axial force and closer to caulking The swaging pin can be swaged. For this reason, good crimping can be performed without buckling of the pin and without generation of burrs and the like.

Further, a self-alignment mechanism (52, 53 in FIG. 1) is provided on the work portion (50 in FIG. 1). That is, the work part is movable from the fixed position on the XY plane and has a force to return to the fixed position.
With the provision of the self-alignment mechanism, even when the punch and the pin are slightly displaced from each other, the work portion slightly moves in accordance with the swaging punch when swaging. For this reason,
A good caulking state can be obtained without depending on the caulking shape and the positional accuracy of the caulking pin and the component.

[0015]

Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is an overall configuration diagram of an embodiment of a caulking device, and FIG. 2 is an enlarged view of a caulking head portion and a caulking pin.

The XY axis 1 is composed of three rails, and moves the swaging head 2 attached to the XY axis 1 to a predetermined position. The caulking head 2 is
It comprises a motor 21 for rotating the punch 31, a cylinder 22 which moves up and down by air pressure, and a vibrator 23 as a vibration means for finely moving the punch 31 up and down when the caulking head 2 is lowered.

The caulking punch 31 is attached at an angle θ to the caulking head 2 installed in the vertical direction. Therefore, the caulking punch 31 contacts the caulking pin 41 installed at a vertical angle at an angle θ. It has become. To attach the punch 31, a chucking mechanism is provided in the vibrator 23, and the punch is inclined and fixed by this mechanism.

The value of the angle θ is not particularly limited, and may be determined according to the diameter of the pin 41, the material, and the like. For example, for a caulking pin having a diameter of 3 mm, θ is about 3 °.
Generally, this slope will be slight and of the order of a few degrees.
In FIG. 2, the inclination of the punch 31 is exaggerated for the sake of explanation.

The component fixing section 5 comprises a work section 50, a spring 52, and a spring fixing frame 53. The work unit 50 is a base for fixing the component 61, the component 62, and the caulking pin 4. The spring 52 is mounted between the spring fixing frame 53 and the work part 50 by several springs in each direction. The spring 52 and the fixing frame 53 constitute a self-alignment mechanism, and have a function of increasing the degree of freedom of the work part 50. Have. The spring fixing frame 53 fixes the work part 50 and the spring 52. Caulking pin 41
Is installed in the component opening 63 of the component 61 and the component 62 so as to protrude from the component 61, and is fixed to the work unit 50 together with the components 61 and 62.

Next, the operation will be described. First, the component 61 and the component 62 are placed on the work portion 50 in advance, and the caulking pin 41 is set in the component opening 63 so as to protrude from the component 61. This setting may be performed by automated equipment or the like.

Next, the XY axis 1 is operated to move the caulking head portion 2 vertically upward of the caulking pin 41, which is the first caulking position. Thereafter, the motor 21 starts rotating and the punch 31 is rotated, the punch 31 is lowered by the cylinder 22, and the vibrator 23 moves the punch 31 up and down slightly.

Thereafter, the swaging punch 31 comes into contact with the swaging pin 41 with an inclination of an angle θ, and the axial force due to the air pressure of the cylinder 22 and the vertical movement of the swaging head 2 by the vibrator 23 cause the swaging pin 41 to move. Start caulking.
Further, since the punch 31 rotates, the punch 31
The direction corresponding to is also changed and caulked.

At this time, the position accuracy of the XY axis 1 and the parts 61, 62,
Since there is a certain degree of variation in the positional accuracy, a certain amount of misalignment occurs even when the swaging punch 31 and the swaging pin 41 are in contact with each other.

Therefore, the spring 52 attached to the work part 50 includes the swaging punch 31 and the swaging pin 41.
By expanding and contracting when the contact is made, the self-alignment function works on the work portion 50, and the position of the caulking pin 41 with respect to the caulking punch 31 moves slightly to an appropriate place.

The caulking punch 31 that has come into contact with the caulking pin 41 caulks the caulking pin 41 by the rotation of the motor 21, the axial force of the cylinder 22, and the vibrator 23, thereby fastening the part 61 to the part 62. At this time, the rotation of the punch 31 makes it easier to match the positions of the punch 31 and the pin 41. Also, the vibrator 23 causes the head portion 2 to slightly move up and down (repeated up and down fine movement),
The caulking punch 31 repeats contact and non-contact with the caulking pin 41, caulking the caulking pin 41 little by little, so caulking the pin with a smaller axial force and in a state closer to hand caulking. Can be. For this reason, good caulking can be performed without the buckling pin buckling. Further, since the punch 31 is inclined, the axial direction of the punch 31 changes, and the caulking pin can be caulked in a state closer to hand caulking.

Thereafter, the caulking head 2 rises, and the vertical movement of the caulking pin 41 is completed. Repeat this for pins 43 and 44
And the component 61 and the component 62 can be satisfactorily fastened.

Further, the work part 50 is provided with a self-alignment function by the spring 52 attached to the work part 50, so that the work part 50 is finely moved in accordance with the position of the caulking punch 31 when caulking. The caulking pins 4 and the components 61 and 62 are less likely to be affected by positional accuracy, and secure caulking can be performed. When the caulking is completed, the work part 50 returns to the original position by the force of the spring 52.

The rotating means (21 in FIG. 1) in the above example,
The vibration means (23 in FIG. 1) and the self-alignment mechanism (52, 53 in FIG. 1) are merely examples, and the present invention is not limited to the above examples, and other means may be used.

[0029]

According to the present invention, insufficient caulking of parts, buckling, deformation and generation of burrs of caulking pins can be eliminated, and good caulking can be performed in a state closer to hand caulking. The productivity of the parts using is improved, and more stable caulking quality is obtained.

The first reason is that the vibrating means moves the caulking head part up and down slightly (repeatedly moving up and down), whereby the caulking punch and the caulking pin repeat contact and non-contact, and the caulking pin is gradually moved. This is because the caulking is performed with less contact friction and the caulking pin can be caulked with a smaller axial force.

Second, by providing the work part with a self-alignment function by means of a spring attached to the work part, the work part moves slightly in accordance with the position of the caulking punch when caulking. , And the positional accuracy of the parts.

Third, because the punch is rotated by the rotating means, even if there is an axis deviation between the punch and the pin, the punch is corrected by the rotation of the punch, and a good crimping state can be obtained.

Fourth, if the punch is inclined,
This is because, by changing the axial direction of the punch, a good caulking state closer to caulking can be obtained.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of an embodiment of the present invention.

FIG. 2 is an enlarged view of a caulking head and a caulking pin.

FIG. 3 is an overall configuration diagram of a conventional caulking device.

FIG. 4 is an enlarged view of a conventional caulking head and a caulking pin.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 XY axis 2 Caulking head part 21 Motor (rotation means) 22 Cylinder 23 Vibrator (vibration means) 3, 31 Caulking punch 41 First caulking pin 42 Second caulking pin 5 Parts fixing part 50, 51 Work part 52 Spring 53 Spring fixing part 61, 62 Parts 63 Parts opening

Claims (4)

[Claims] 1. A caulking device for caulking a caulking pin with a caulking punch, wherein a rotating means for rotating the caulking punch is provided. 2. The caulking device according to claim 1, wherein the caulking punch is inclined with respect to a vertical direction. 3. A caulking device for caulking a pin for caulking with a punch for caulking, wherein a vibrating means for vibrating the punch for caulking in a vertical direction is provided. 4. A caulking device in which a caulking pin is fixed on a work part and caulked by a caulking punch.
The caulking device, wherein the work unit is provided with a self-alignment mechanism that is movable from a fixed position on an XY plane and has a force to return to the fixed position.