JP2563268Y2 - Tool - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an assembling tool after machining an automobile part or the like.

[0002]

2. Description of the Related Art Generally, a casting having a complicated shape is manufactured by using a collapsible core, and the core is positioned in a main form by a baseboard. In that case, the skirting board needs to penetrate the thickness of the product, and a through hole remains in the cast product removed from the mold. As another example, cast products with thick portions that cannot be stolen from the inside are likely to have cavities in the thick portions and defects appear after processing, so it is necessary to form a stolen mold from the outside as a countermeasure There is. Also in this case, the through holes are processed from the outside. These holes are usually machined in steps, into which blind plates or the like are fitted.

FIG. 2A and FIG. 2B show this. The blind plate needs to be caulked at the outer inner edge of the hole of the casting so that the spherical surface is hit by a flat surface, sealed, and does not come off.
Conventionally, each step is mechanized like a press-fitting machine or a caulking machine. To carry out this step, a transporting operation is required, and a positioning operation and equipment costs are required in each step, which is not efficient.

[0004]

That is, the problem is to perform the percussion sealing and crimping of the blind plate in one process.

[0005]

For this purpose, a tool is attached to the means for moving forward and backward, and the tool is pushed in, and in order to perform punching, sealing and caulking sequentially, a pushing rod and a pushing rod are inserted into the opening at the tip end. A first cylindrical body containing a first elastic body to be urged, an impact body for pushing the tip of the rod and striking the rear portion of the rod, and a second elastic body for urging the impact body forward are provided. A second cylindrical body, a pair of locking bodies for inserting and locking the claw portion of the second cylindrical body with the claw portion being pressed rearward while the second elastic body is pressed against the opening of the side wall of the second cylindrical body; It has a structure in which the rear portion of the first cylindrical body and the front portion of the second cylindrical body are connected and connected. The release of the locking is controlled by the function of the push rod detecting means provided on the side wall of the first cylinder.

[0006]

Then, when the blind plate is set in the recess of the stepped hole, the tool moves forward by means of advancing and retreating, and when the pushing rod hits the blind plate, the first elastic body is compressed and the first elastic body is compressed. Retreats inside the cylinder. When the position of the push rod is detected by the detection means at a predetermined position, the lock is released, and the impact body is advanced by the elasticity held by the second elastic body and kinetic energy hits the push rod from the rear. The blind plate extends flat and presses the inner diameter of the hole uniformly to seal.

Then, the tool advances, and the swaging teeth formed at the tip of the first cylindrical body swage the entrance of the stepped hole. At this time, the push rod and the impact body retreat relatively in the cylinder, return to the locking position of the impact body, and the impact body is locked by the locking means. Thereafter, if the tool is moved backward by means of forward and backward movement, the push rod advances in the cylinder by the repulsive force of the first elastic body and returns to the initial position. If these operations are repeated, it is possible to realize sealing with a blind plate by means of moving forward and backward.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an aluminum alloy automobile part according to the present invention. In FIG. 1, an extension housing 1 cast by a die casting method is set on jigs 3 of a gantry 2. And table 4, 4
7 shows a state in which tools 6, 6 are fixed to the rod ends of hydraulic cylinders 5, 5, which are attached to the hydraulic cylinders 5, 5, respectively, and the hydraulic cylinders 5, 5 move downward toward a target position. FIG. 2A is a cross-sectional view showing a state where the blind plate 8 is set in the stepped hole 7 of the extension 1 to be sealed.
FIG. 2B shows a sectional view of the stepped hole 7 after the blind plate 8 is hammered and caulked by the tool 6. Numeral 9 indicates traces of plastic deformation of the swaged portion.

FIG. 3 is a cross-sectional view showing a state in which the tool 6 moves forward and the push rod 10 strikes the blind plate 8 and does not enter. The push rod 10 is connected to the first elastic body 12 in the first cylindrical body 11.
Urged to the tip. In the second cylinder 13 connected to the first cylinder 11 by a flange, the impact body 1
4 compresses the second elastic body 15 rearward, and the locking plates 16, 16 hold that state. The locking plates 16 and 16 are configured to release the locking by operating pins 18 and 18 with the fulcrum pins 17 and 17 as fulcrums. FIG. 4 shows A-
FIG. 3 is a sectional view of A, in which a hydraulic cylinder 19 operates a locking plate 16. FIG. 5 shows that the tool 6 further advances after the impact body 14 hits the push rod 10 by the signal of the proximity switch 20, whereby the push rod 10 further retracts while retracting the impact body 14, and the outer inner edge of the stepped hole 7. Caulking teeth 2
1 shows a cross-sectional view of a state immediately before caulking. Reference numeral 22 denotes an axial bearing.

The operation will now be described with reference to the drawings. When the blind plate 8 is manually set in the stepped hole 7 of the extension 1 installed on the jig 3 of the gantry 2, the control means is started and the operation of the hydraulic cylinder 5 causes the tool 6 to move forward to enter the stepped hole 7. Push the blind plate 8 which was unstable to the rod 1
The push rod 10 is pushed down to the stepped portion at the tip of 0, and thereafter the push rod 10 is immersed in the first cylindrical body 11. And the proximity switch 20
When the signal reaches the point where is detected, the hydraulic cylinder 19 is actuated by the signal to push out the locking plate 16 and release the forward biasing of the impact body 14, and the impact body 14 is repelled by the elastic force of the second elastic body 15. The push rod 10 moves forward at a speed and strikes the rear part of the push rod 10, and the tip of the push rod 10 plastically deforms the blind plate 8, and the diameter of the blind plate 8 becomes uniformly large. At that time, the striking force can be adjusted by adjusting the distance between the rear part of the push rod 10 and the front part of the impact body 14 at the position of the proximity switch 20.

Further, when the tool 6 advances while the pushing rod 10 abuts against the blind plate 8, the impact body 14 becomes the second elastic body 1
5 continues to retreat through the push rod 10 while compressing. When the caulking teeth 21 strike the outer inner edge of the stepped hole 7 and caulking starts, the blind plate 8 is fixed when it is completed by a signal of a proximity switch (not shown) installed on the hydraulic cylinder 5. At this time, the impact body 14 is located at a position slightly retreated from the initial position, the locking plate 16 is in a state where it can be returned to its original position, and the hydraulic cylinder 19 is operated so that the locking plate 16 is sandwiched.
When the tool 4 is retracted by the operation of the hydraulic cylinder 5, the second elastic body 15 is extended, but is biased and held at the position where the impact body 14 was locked. Further, when the tool 6 is retracted by the operation of the hydraulic cylinder 5, the push rod 10
Is also urged to the initial position by the elastic force of the first elastic body 12. When the hydraulic cylinder 5 reciprocated a predetermined distance in this way, the stepped hole 7 was sealed and fixed by the blind plate 8.

[0012]

[Effects of the Invention] As described above, a tool that enables hitting and caulking in one process by reciprocating the hydraulic cylinder has been devised, so that the process can be simplified and equipment investment can be reduced.

[Brief description of the drawings]

FIG. 1 is an elevational view of a state in which an extension housing is set to a device to which a tool according to the present invention is attached, and the tool is moving forward.

FIG. 2A is a cross-sectional view illustrating a state in which a blind plate is set in a stepped hole of an extension housing.

FIG. 2 (b) is an elevation view of a state where a stepped hole of an extension housing is sealed by a blind plate.

FIG. 3 is a cross-sectional view of a tool in a state where a push rod abuts against a blind plate and does not enter.

FIG. 4 is a sectional view taken along the line AA of FIG. 3;

FIG. 5 is a cross-sectional view of the outer inner edge of the stepped hole just before a caulking tooth is caulked.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Extension housing 2 Stand 3 Jig 4 Unit 5 Hydraulic cylinder 6 Tool 7 Stepped hole 8 Blind plate 9 Trace 10 Push rod 11 First cylinder 12 First elastic body 13 Second cylinder 14 Impact body 15 Second elastic body 16 Locking plate 17 Support pin 18 Working pin 19 Hydraulic cylinder 20 Proximity switch 21 Caulking tooth 22 Bearing

Claims (1)

(57) [Scope of request for utility model registration] 1. A tool for sealing a stepped hole by means of advancing and retreating with a blind plate or the like, a first cylindrical body and a second cylindrical body joined in series, and a side wall of the second cylindrical body. The first cylindrical body includes a push rod and a first spring for urging the push rod toward the tip, and the second cylindrical body includes a rear portion of the push rod. An impacting body to be hit and a second spring for urging the impacting body toward the push rod are housed, and in a combination having a plurality of caulked teeth on the peripheral edge of the tip of the first cylindrical body, the forward and backward movement of the tool is performed. A tool that performs hitting and caulking by locking and releasing the locking means.