JPH0144177Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a crimping device, and more specifically, to an article in which a plurality of pairs of crimping portions are provided on both surfaces in pairs on the circumference. Regarding the target caulking device. This is used, for example, in the field of caulking work for planetary carriers, which are torque converter type transmission parts for automobiles.

[Prior art]

Conventionally, a crimping device for an article having multiple pairs of crimping parts on the circumference, such as a planet carrier which is a torque converter type transmission part, has been developed by using a driving source. Some punches are equipped with an upper punch that moves up and down and applies caulking pressure from above, a lower punch that is fixed upward, and a pedestal on which the article is placed. After placing the item on the pedestal, the upper punch applies downward caulking pressure, and the pair of required caulking parts located on both the front and back sides of the article are pinched between the upper punch and the lower punch. It is a device that swivels and crimps at the same time. Apart from this, there is also a full crimping device that can crimp all pairs of required crimping parts from both upper and lower sides at once.

In the former case, once the work on a pair of caulking parts is completed, the item on the holder must be moved each time in order to set the required caulking part in a predetermined position, but this is quite troublesome and time-consuming. Due to this type of work, in some cases, the position or posture of the article may become unstable and accurate caulking may not be possible. In the latter case, upper punches and lower punches must be arranged in the number corresponding to all the required caulking parts, and each punch is activated at the same time.
The driving source for the punch requires a large output, making the device large and requiring a large space for installation.

[Purpose of invention]

The present invention has been made to solve the above-mentioned difficulties in the prior art, and is intended for articles in which multiple pairs of caulking portions are provided on both surfaces in pairs on the circumference. The object of the present invention is to provide a compact caulking device that can perform each pair of caulking operations with high precision in sequence by rotating the article while the object is placed on it to determine the position of the caulking part. do.

[Structure of the idea]

The features of the caulking device of the present invention are as follows.

The caulking parts provided in pairs on both sides are
This is a caulking device that targets articles arranged in plural pairs on the circumference.A rotary table is provided on a base, an article holder is resiliently placed on the rotary table, and a plurality of holders are mounted on the rotary table. A punch passes through and is supported, one pressurizing punch is provided facing the article receiving table, and by rotating the rotary table, each pair of required caulking parts are sequentially caulked. , a receiving surface for receiving a caulking reaction force and a punch retraction storage part that allows a receiving punch that is not caulked to be lowered are provided.

〔Example〕

Hereinafter, the present invention will be described in detail based on examples thereof. 1 and 2 show a state in which caulking required portions 1a and 1b, which are provided in pairs on both upper and lower surfaces of a workpiece 1 indicated by imaginary lines, are caulked; Caulking part 1
FIG. 2 shows a cross section including the caulking portions 1a and 1b which have not been caulked. A rotatable index table 3 is provided on a base 2 of such a caulking device, an article holder 4 is resiliently mounted on the index table 3, and a workpiece 1 is placed on the article holder 4. It is placed. In Fig. 1, the required caulking part 1 at the lower end of the workpiece 1 is shown.
A receiving punch 5 is brought into pressure contact with the caulking portion 1b at the upper end, and a pressure punch 6 is pressed against the caulking portion 1b at the upper end, thereby caulking the caulking portions 1a and 1b. The receiving punch 5 passes through the index table 3 and is supported by a receiving surface 2a on the base 2 via a spacer 5a. The pressure punch 6 is supported by columns 7, 7 (see FIG. 2) and is attached to a mounting device 8 that is driven up and down by a hydraulic cylinder (not shown) or the like.

As shown in FIGS. 4 and 5, the workpiece 1 includes a frame 1c having a thick annular hollow part, and three pinion gears 1d that mesh with each other on the peripheral edge of the frame 1c. This is a part of a planetary gear called a planet carrier, which is arranged in the same phase. The pinion gears 1d are rotatably supported by the frame 1c by support pins 1f via needle bearings 1e, respectively. At both ends of the support pin 1f, thin parts are provided in advance to form caulking parts 1a and 1b, and after the support pin 1f is assembled into the frame 1c so that the pinion gears 1d are in mesh with each other, Caulking part 1a, 1
Caulk b into a petal shape as shown, and attach support pin 1.
f is fixed to the frame 1c. Three support pins 1f are arranged on each of the large-diameter circle A and the small-diameter circle B at equal intervals. In addition,
Although not shown, the frame 1c is formed with a recess into which a workpiece positioning projection 4e, which will be described later, is fitted.

As shown in FIG. 3, the base 2 has an octagonal plate shape approximating a square at the bottom, and a disk shape at the top, as shown in FIGS. 1 and 2. It is placed on an underframe 10 that is placed on a surface plate 9. At both ends of the underframe 10, there are a pair of positioning devices 11, 11 for positioning the base 2, and in a direction orthogonal thereto, as shown in FIG.
A pair of fixing devices 12, 12 are provided to allow the base 2 to slide only in the direction of arrow C, which is the positioning direction, and to fix the base 2 to the underframe 10 after positioning. The positioning devices 11, 11 have an adjustment screw 11a screwed into a screw groove drilled in the horizontal direction, and the tip of the adjustment screw 11a is brought into contact with the side surface of the plate-shaped portion at the bottom of the base 2. , to adjust the position. As shown in FIGS. 2 and 3, the fixing devices 12, 12 include a rectangular pressing plate 12a provided along and covering the edge of the plate-shaped portion of the base 2, and a pressing plate 12a that presses the plate-shaped portion of the base 2. Fixing screw 12b
It consists of. The base 2 is provided with a punch retreat storage portion 2b that allows the receiving punch 5 to be lowered at a position corresponding to the required caulking portion 1a where caulking work is not performed, with respect to the receiving surface 2a that receives the caulking reaction force, A ball plunger 2c for fixing the index table 3 at an indexed position for caulking work is provided to protrude upward, and a shaft hole 2d is provided in the center.
is provided. Furthermore, as shown in FIG. 2, reference score lines K are marked on the side surface of the base 2 in order to facilitate the above-mentioned position determination. In the punch retraction storage section 2b, a flanged receiving piece 2e for receiving the receiving punch 5 is inserted into a stepped through hole formed in the base 2 via the spacer 5a, and is held by a spring 2f. It is elastically supported so that it can slide up and down. The receiving piece 2e has a sufficiently wide receiving surface, and is suitable for receiving punches 5 arranged on each circumference of the large diameter circle A and the small diameter circle B on the index table 3, as will be described later. You can receive either.

The index table 3 has a disk shape, and has shaft portions 3a and 3b protruding from the center of its upper and lower surfaces.The shaft portion 3b is fitted into a shaft hole 2d provided in the base 2, and is engaged with its tip. A stop bolt 3c is screwed together, and the index table 3 is rotatably attached to the base 2 via a washer. Attachment holes 3d for mounting receiving punches 5 are provided at the peripheral edge of the index table 3 corresponding to each caulking portion 1a. The receiving punch 5 has a substantially round bar shape, and has a tapered surface 5b in three directions in the same phase from the center of its tip so that the aforementioned petal-shaped required caulking parts 1a and 1b can be caulked at once. It is formed. In addition, the lower half part is formed with a mounting part in which a chamfer 5c is turned in the vertical direction, and holds the receiving punch 5 at a predetermined corresponding angle with respect to the required caulking part 1a arranged at the caulking position, and It is designed to be attached to the attachment hole 3d formed so as to allow sliding movement. Note that the lower half of the attachment hole 3d has a slightly wider step, so that the spacer 5a is placed below the receiving punch 5.

A pressure punch 6 that faces the receiving punch 5 and presses the caulking portion 1b has almost the same shape as the receiving punch 5, has a chamfer 6a larger than the receiving punch 5, and is fixed to the mounting device 8. . Although not shown, a positioning protrusion is provided on the side surface of the index table 3 to allow movement in the vertical direction with respect to the article holder 4 and to fix the position in the rotating direction. A concave portion 3g that accommodates a spring 3f for resiliently mounting the article receiving stand 4 is provided at a location that engages with the piece and is slightly closer to the inner circumference. A receiving hole is formed in the lower surface of the index table 3 to receive a ball of a ball plunger 2c projecting from the base 2. On the side surface of the index table 3, there are provided caulking parts 1a and 1b arranged in the same phase on the large-diameter circle A and the small-diameter circle B of the workpiece 1, respectively, to facilitate the position determination when performing the caulking work. Therefore, as shown in FIG. 2, score lines K1 and K2 are marked.

The article receiving stand 4 has a disc shape that is slightly larger than the index table 3, and the peripheral edge of the upper surface thereof has a
As shown in FIG. 3, a projecting edge 4b for receiving the workpiece 1 is provided, and a receiving punch 5 is provided at a position corresponding to the mounting hole 3d of the index table 3.
A hole 4a is formed for inserting the
Recessed portion 3g provided in index table 3
A concave portion 4g for receiving the spring 3f is located at a position opposite to the spring 3f.
A shaft hole 4c is provided in the center, and a shaft portion 3a protruding from the index table 3 is inserted into this shaft hole 4c. A locking bolt 3h is screwed into the upper end of the shaft portion 3a via a washer, and the article holder 4 is elastically mounted at a predetermined distance from the index table 3 by the spring 3f. In order to fix the workpiece 1 at a predetermined position on the article holder 4 together with the above-mentioned projecting edge 4b,
A workpiece positioning convex portion 4e is provided to protrude from the upper surface of the article receiving table 4. This workpiece positioning convex portion 4e is fitted into a through hole provided in the article holder 4, and is fixed from below with a locking bolt 3e.

In addition, in the apparatus of this embodiment, caulking pressure is applied from above and the workpiece 1 is pinched from above and below, but the present invention does not limit the direction of caulking pressure. You can also try teasing them.

Next, the operation of this crimping device will be explained.

(1) Rotate the index table 3, align the score line K1 with the reference score line K as shown in Fig. 2, fit the ball of the ball plunger 2c into the receiving hole of the index table 3, and then 3 is fixed to the base 2 so that it is in the normal initial position. At this time, the article holder 4 is regulated by the positioning device so as not to rotate relative to the index table 3.
It is resiliently supported by a spring 3f provided in a concave portion 3g of the index table 3, and is locked at the upper limit position by a locking bolt 3h at a distance from the index table 3 via a washer.

(2) As shown in Fig. 3, the taper surface 5b in the caulking direction of the caulking portion 1a of the workpiece 1 matches the hole portions 4a arranged at three locations on the circumference of the large diameter circle A of the article receiving stand 4. Insert the receiving punch 5 as shown. The receiving punches 5 are fixedly mounted in a state where they are regulated to the above-mentioned corresponding angle by a chamfer 5c made on the lower mounting part, and only one receiving punch 5 is mounted on the receiving surface 2a of the base 2. In addition, the other two receiving punches 5 each have a spacer 5 on the receiving piece 2e provided in the punch retraction storage portion 2b.
located through a. Note that the spacers 5a are arranged in advance at various points, and the pressure punch 6 is attached to the attachment device 8 from the beginning.

(3) A projecting edge 4b provided at the peripheral end of the article holder 4 so that the workpiece positioning convex portion 4e protruding on the article holder 4 fits into the positioning recess of the work 1, and the outer periphery of the work 1 is provided at the peripheral end of the article holder 4. Place the work 1 so that it fits into the base frame 10, move the base 2 in the direction of arrow C using the adjustment screw 11a of the positioning device 11 provided on the base frame 10, as shown in FIG.
It is fixed in the proper position by fixing devices 12,12. In such a state, the workpiece 1 is placed in a horizontal state, and the required caulking parts 1a and 1b are arranged at positions corresponding to the receiving punch 5 and the pressure punch 6, respectively.

(4) Drive the hydraulic cylinder to lower the pressure punch 6 and apply pressure to the required caulking parts 1a and 1b. Due to the lowering of the pressure punch 6, the required caulking part 1
b is pushed down, and at the same time, the entire workpiece 1, together with the article holder 4, descends by a distance while resisting the elastic force of the spring 3f, and as shown in FIG. It touches the top edge. Since the required caulking portion 1a is brought into contact with the tip of the receiving punch 5 which is supported in a fixed state by the receiving surface 2a on the base 2, further downward pressing of the pressure punch 6 causes the required caulking portion to 1a and 1b are pressed together and caulked into petal shapes at the same time, as shown in FIG. At this time,
Since the other two required caulking parts 1a are each supported by the receiving punch 5 which can be lowered, the entire workpiece 1 maintains its initial horizontal state by the amount that the required caulking parts 1a are lowered by caulking. Descend while doing so. Therefore, while the caulking work is being performed, the support pin 1f is maintained in its initial vertical state without being tilted, so that the caulking parts 1a and 1b provided at both ends of the support pin 1f are held in place by the receiving punch 5 and the pressure punch 6. It is always maintained in an appropriate position.

(5) Drive the hydraulic cylinder to raise and retreat the pressure punch 6, rotate the index table 3 to align the next score line K1 with the reference score line K,
A pair of important caulking parts 1 that should be caulked next
The positions of a and 1b are determined, and the caulking work is performed in the same manner.

(6) When the caulking work of the three pairs of required caulking parts 1a and 1b arranged on the large diameter circle A of the workpiece 1 is completed, the workpiece 1 is once removed from the article receiving stand 4, and the receiving punch 5 is individually Rotate it once,
Each hole 4a arranged on the small diameter circle B on the article receiving stand 4 is replaced.

(7) Place the workpiece 1 on the article holder 4, rotate the index table 3, align the score line K2 with the reference score line K, and place the required caulking line on the small diameter circle B of the workpiece 1. The positions of the parts 1a and 1b are determined, the position of the base 2 is adjusted with the adjustment screw 11a, and the required caulking parts 1a and 1b are placed at the regular caulking positions.Then, the parts 1a and 1b to be caulked are placed on the small diameter circle B using the same procedure. The caulking work of the caulking required parts 1a and 1b can be performed.

[Effect of idea]

As can be seen from the description of the embodiments above, according to the present invention, a rotary table is provided on a base, an article receiving stand is resiliently mounted on the rotating table, and a plurality of receiving punches penetrate through the rotating table. A pressurizing punch is provided facing the article receiving table, and by rotating the rotary table, each pair of required caulking parts are sequentially caulked, and a caulking reaction force is applied to the base. By providing a receiving surface for receiving the punch and a punch retraction storage section that allows the receiving punch to be lowered,
The positional state of the caulking part is stable during caulking pressurization, and highly accurate caulking can be performed, and the output of the punch drive source can be small, resulting in the advantage that the device can be made smaller.

[Brief explanation of the drawing]

Fig. 1 is an overall sectional view showing the state in which crimping work is performed by the crimping device according to the embodiment of the present invention, Fig. 2 is a side view including a cross section of a portion where crimping is not performed, and Fig. 3 is a receiving punch. 4 is a plan view of the workpiece, and FIG. 5 is a sectional view taken along the line V-V in FIG. 4. DESCRIPTION OF SYMBOLS 1...Article (work), 1a, 1b...Required caulking part, 2...Base, 2a...Receiving surface, 2b...Punch retreat storage section, 3...Rotary table (index table), 4... ...article receiving stand, 5...receiving punch, 6...pressure punch.

Claims (1)

[Scope of claim for utility model registration] The required caulking parts provided in pairs on both sides are
In a caulking device that targets articles arranged in plural pairs on the circumference, a rotating table is provided on a base, an article receiving stand is resiliently mounted on the rotating table, and a plurality of receiving punches are mounted on the rotating table. A pressurizing punch is provided opposite to the article receiving table, and by rotating a rotary table, each pair of required caulking parts are sequentially caulked, and the base includes: a receiving surface that receives caulking reaction force;
A caulking device characterized by being provided with a punch retraction storage section that allows a receiving punch that is not yet caulked to be lowered.