JP2900633B2 - Press equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press apparatus for correcting a work, such as a gear, which requires phase adjustment, for example, a straightening press.

[0002]

2. Description of the Related Art In a manufacturing process of a sintered part or the like, in a final step, a sintered product is generally subjected to a straightening press treatment. This straightening press process is performed by compressing a work between upper and lower dies attached to a press device, and usually, a large number of works are arranged in advance on a table, and the table The press process is performed while the work is intermittently fed between the upper die and the lower die. Further, when setting a work on the table, it is necessary to accurately position the work with respect to the upper mold and the lower mold. For this positioning, the work is placed on the table in a predetermined posture. A large number of jigs to be held (the number of works mounted on a table) are mounted.

[0003]

However, since this jig can exhibit the positioning function only when it is accurately positioned with respect to the table, great care is required when mounting it on the table. Performing such operations in a small environment inside the press device and over a large number of units requires a lot of labor.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a press apparatus which is excellent in workability and can shorten the time for setup change.

[0005]

In order to achieve the above object, a pressing device according to a first aspect of the present invention moves with a degree of freedom in one direction in a plane intersecting the moving direction of an upper die and a lower die. A support table that is provided so as to be capable of being provided, a plurality of work holding units that are provided side by side on the support table along the direction of movement thereof, and each holds a work; And pressurizing the work by moving the upper mold and the lower mold in a direction approaching each other by the pressurizing means of the press body, wherein the upper mold, the lower mold, and the support A moving frame for integrally supporting a table and movably supporting the press body; and a supporting table provided on the moving frame, wherein the supporting table is provided at every arrangement interval of the work holding unit. Consists of a removable stopper, the workpiece holding portion, said the support table in said plane while being rotatably supported, has a positioning means for positioning the workpiece in said plane, said workpiece holding portion A fixing means for fixing these at a specific position is provided between the support table and the support table. Departure
According to a second aspect of the present invention, the driving means has a rotary cam,
The support table has a groove into which the shaft of the system fits,
The guide of the stopper is configured to fit into the groove.
It is characterized by:

[0006]

According to the first aspect of the present invention, when the setup is changed, etc.
By moving the moving frame,
The mold, lower mold, and support table are carried out of the press body
And the support table is fixed at predetermined intervals by stoppers
The workpiece holding part on the support table
And the lower mold and the upper mold and
Supporting the work holding part positioned with respect to the lower mold
And fix it in place by fixing means.
The work holding part can be
Adjust the positioning in the rotation direction. According to claim 2 of the present invention.
The support table by the driving means during the press work.
When rotating intermittently, the shaft of the rotating cam of the driving means is fitted.
Using the groove of the support table to enter and exit, for setup change, etc.
The guide of the stopper in the groove of the support table.
The fitting restricts the rotation of the support table.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a press apparatus according to an embodiment of the present invention. In the present embodiment, a description will be given of a press device for correcting distortion during manufacturing when the external gear is made of, for example, sintered.

In the figure, reference numeral 1 denotes a press body of the present embodiment,
In the drawing, reference numeral 2 denotes a die set (moving frame) detachably provided on the press device main body 1, reference numeral 3 denotes an upper ram of the press device main body 1 for pressing the die set 2 from above, and reference numeral 4.
Denotes a support mechanism of the press body 1 that supports the die set 2 from below.

The die set 2 has an upper base 5 and a lower base 6, and the upper base 5 has an upper die 8a for pressing a work gear 7 (shown only in FIG. 5), and the lower base 6 has A lower die 8b is provided, and a guide shaft 9 for moving the upper base 5 in the direction of the lower base 6 along the pressing direction of the upper die 8a is provided between the upper base 5 and the lower base 6. I have. Here, the die set 2 mounts the lower base 6 on the support mechanism 4, and clamps the clamp portion 10 provided on the upper portion of the upper base 5 with the upper clamp 11 provided on the upper ram 3. , Is provided in the press body 1. Further, a shaft portion 2a, which is a center for moving the die set 2 to the outside of the press device main body 1, is provided on a side portion of the die set 2. The upper die 8a is manufactured so as to be mutually male and female with the work gear 7 according to the outer shape and the like of the work gear 7 to be corrected.

The side of the lower base 6 of the die set 2 is intermittently arranged along the upper surface of the lower base 6 to sequentially set the work gear 7 pressed by the upper die 8a on the upper surface of the lower base 6. Rotating turntable (support table)
12 is provided by mounting the bearing portion 13 with a bolt 14 as shown in FIG. The turntable 12 does not need to be a rotating body as long as it has a degree of freedom in the position direction within a plane intersecting the moving direction of the upper die 8a and the lower die 8b. Here, as shown in FIG. 3, the turntable 12 and the rotary cam 15 form a Geneva mechanism so that the turntable 12 can be intermittently rotated by the rotation of the rotary cam 15 provided on the press device body 1 side. The turntable 12 is provided with a plurality of holes 17 at the same pitch on the same circle around the rotation shaft 16, and the shaft 18 of the rotary cam 15 is provided between adjacent holes 17. Grooves 19 to be fitted into each other are formed toward the rotating shaft 16. Each time the rotary cam 15 makes one rotation, the position of the hole 17 is shifted by one pitch, and the hole 17 located at the uppermost position shown in FIG. What you do)
The upper die 8a of the upper base 5 is located coaxially above the vertical direction of the drawing. Thus, the work gear 7 can be sequentially set at the press position of the upper die 8a for each stroke of the press. The rotary cam 15 and the groove 19 of the turntable 12 and the like constitute a driving means, that is, a means for intermittently moving the bush (work holding portion) described later at every arrangement interval.

Then, each hole 17 of the turntable 12
Holds a work gear 7 which is an external gear, and a work gear 7
Of the upper gear 8a in the shape of an internal gear.
Bush (work holding part) 21 for adjusting to zero phase
Are arranged along the moving direction of the turntable 12 as shown in FIGS. 4 and 5, and the upper die 8a and the lower die 8b
(In FIG. 4, only the inner teeth of the press section 20 are shown at both ends of the cross section, but this is the entire inner circumference of the upper die 8a. Is formed in That is, when the bush 21 carries the die set 2 out of the press device main body 1 and is positioned at a position coaxial with the upper die 8a by a stopper described later, the phase of the mounted work gear 7 is changed to the pressing force of the upper die 8a. In order to fix the work gear 7 radially and circumferentially in a plane intersecting the moving direction of the upper die 8a and the lower die 8b so as to match the phase of the portion 20, in this embodiment, as shown in FIG. Insertion hole 2 into which work gear 7 enters
Projecting portions 23 (positioning means) projecting three places inward from 2 are provided so as to enter the tooth grooves 24 at positions that divide the circumferential direction of the work gear 7 into approximately three equal parts. The bush 21 has a plurality of elongated holes 26 for phase adjustment formed in the flange portion 25.
6 and bolts (fixing means) 2 to the turntable 12
6a.

The lower base 6 of the die set 2 has
As shown in FIG. 6, a mounting portion 29 including a plurality of mounting holes 27 and knock pin holes 28 is provided outside the turntable 12, and the mounting portion 29 is provided with the center axis of the bush 21 of the turntable 12 facing upward. Align with the center axis of the press section 20 of the mold 8a (that is, position the bush 21
A stopper 30 is attached by fastening a mounting bolt 32 to the mounting hole 27 while fitting the knock pin 31 to the knock pin hole 28.
The central axis of the bush 21 is determined by, for example, three projecting portions 23, and the central axis of the press portion 20 is determined by, for example, the tooth groove of the internal gear constituting the pressing portion.

The turntable 1 is attached to the stopper 30.
2 is a center axis of a predetermined bush 21 and a press portion 2 of the upper die 8a.
The guide 3 which slides after the center axis of the turntable 0 is aligned with the groove portion 19 of the turntable 12 to regulate the rotation thereof.
3 and slide the guide 33, and
When the position 3 is at the rear end which does not interfere with the turntable 12, a lever 35 is provided in the lock groove 34 for fitting and locking the guide 33 as shown by a two-dot chain line in FIG. I have. Behind the guide 33, there is provided a limit switch 36 for detecting when the lever 35 is in the lock groove 34. As described above, the stopper 30 can be freely attached to and detached from the groove 19 of the turntable 12 at every interval between the bushings 21.

In the press apparatus having such a structure, when the setup is changed or the like, the clamp between the clamp portion 10 provided on the upper base 5 and the upper clamp 11 of the upper ram 3 is released to form the integrated die set 2. And the turntable 12 are carried out of the press device body 1. Then, in the state of being carried out of the press device main body 1, the center axis of the predetermined bush 21 of the turntable 12 is aligned with the center axis of the press section 20 of the upper die 8 a, and the stopper 30 of the lower base 6 of the die set 2 is set. The guide 33 is fitted into the corresponding groove 19 of the turntable 12 to restrict the rotation of the turntable 12. In this state, the phase of the protrusion 23 of the bush 21 is changed to the upper die 8.
This corresponds to the phase of the press section 20 of a. Here, as a method of this phase adjustment, the bolt 26a of the bush 21 is loosened, and the bush 21 can be moved and adjusted in the circumferential direction by the elongated hole 26. Bush 2 by fitting the groove
There is a method in which the upper die 8a is fitted into the master gear by appropriately rotating the bush 21 in the circumferential direction in this state, and the upper die 8a is fastened to the turntable 12 by bolts 26a.

The stopper can be attached only when the setup is changed. Although the present embodiment has been described by taking the press apparatus for correcting the external gear as an example, the present invention can be applied to various apparatuses as long as the work requires a circumferential phase with the upper die. It also has good effects.

[0016]

As described in detail above , claim 1 of the present invention
According to the press machine of the present invention, the movable
By moving the frame, the upper mold, lower mold, and
Take the support table out of the press body and remove the support table.
By fixing it at predetermined intervals with a stopper,
Work holding part on holding table for upper and lower mold
In addition to positioning, the upper die and lower die
The work holder on the support table, and
By fixing in place by the fixing means,
Positioning the retaining part in the rotation direction with respect to the upper and lower dies
Can be adjusted. Thus, by moving the moving frame, the upper die, the lower die, and the support table can be integrally attached to and detached from the press body. Therefore, the setup change and the like can be performed outside the press device, so that the workability is significantly improved and the setup change time can be shortened. In addition, the setup of the moving frame for the next work can be prepared even during the press work, and the press work for the next work can be performed only by replacing the moving frame, greatly reducing the setup change time. it can. According to claim 2 of the present invention, the driving hand
When the support table is intermittently rotated by the step,
Groove of the support table into which the shaft of the rotating cam of the means fits
At the time of setup change, etc.
By fitting the guide of the stopper into the groove, the support
Cable rotation can be regulated. Therefore,
When the support table is intermittently rotated and the step
Extremely reasonable because it can be used for replacement, etc.
Structure can be simplified, and the device structure can be simplified.
Can be.

[Brief description of the drawings]

FIG. 1 is a front view showing a main part of a press device according to an embodiment of the present invention.

FIG. 2 is a front view showing a press device according to one embodiment of the present invention.

FIG. 3 is a plan view showing a turntable and the like of the press device according to one embodiment of the present invention.

FIG. 4 is a sectional view showing a bush and an upper die provided on a turntable of the press device according to one embodiment of the present invention.

FIG. 5 is a plan view showing a bush and a work of the press device according to one embodiment of the present invention.

FIG. 6 is a plan view showing a stopper of the press device according to one embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Press apparatus main body 2 Die set (moving frame) 7 Work gear (work) 8a Upper die 8b Lower die 12 Turntable (support table) 15 Rotating cam (drive means) 18 Shaft part 19 Groove part (drive means) 21 Bush (work) (Holding part) 23 positioning means (projecting part) 26a bolt (fixing means) 29 mounting part 30 stopper 33 guide

Claims (2)

(57) [Claims] A support table movably provided with a degree of freedom in one direction in a plane intersecting the movement direction of the upper mold and the lower mold; and a support table arranged on the support table along the movement direction. A plurality of work holding portions each holding a work, and driving means for intermittently moving the support table at every arrangement interval of the work holding portions, wherein the upper die and the lower die are pressed by pressing means of a press body. A press apparatus for pressing a work by moving the work in a direction approaching each other, comprising: a moving frame that integrally mounts the upper mold, the lower mold, and a support table and movably supports the press body; A stopper provided on a frame and detachably attached to the support table at intervals of arrangement of the work holding unit; While being relatively rotatably supported within said plane, it has a positioning means for positioning the workpiece in said plane, between the workpiece holder and the supporting table to secure them at specific locations fixed A press device comprising means. 2. The driving means has a rotary cam, and said rotary cam
The support table is provided with a groove into which the shaft part fits.
The stopper guide is configured to fit into the groove.
The press device according to claim 1, characterized in that: