JPS608893B2 - Swaging machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention is a swaging method that aims to bring the processing section and the input section as close as possible and to reduce the axial thickness (depth) of the device as much as possible. It's about machines.

All spindles in conventional swaging machines are long in the axial direction, and usually a die is held at one end of the spindle, and an input pulley is fixed to the other end.

Therefore, the spindle requires a sufficient cross-sectional area for power transmission, which not only makes it large compared to the material to be processed, but also increases the axial thickness of the device, especially during warm or hot processing. Hot working is considered difficult and is not used except in special cases, and hot working has many problems, such as rising processing costs and the need for larger and more complex equipment. However, in this invention, since the spindle is provided protruding from the pulley, the machining section and the input section are brought very close to each other, and the thickness of the device in the axial direction can be significantly reduced, making it possible to perform simple hot working and simplifying the device. The above-mentioned conventional problems have been solved.

One of the features of this invention is that the spindle is provided protruding from one side of the boss portion of the pulley, so that the processing section and the input section are brought very close to each other.

Another feature of the invention is that the pulley is rotatably mounted to the housing. Another feature of the present invention is that the pulley is provided with cooling air supply holes. That is, the present invention will be explained with reference to the accompanying drawings as follows.

A circular hole 3 is provided at right angles to the wide wall surface of the housing 2 in the upper part of the thick plate-shaped housing 2 installed upright on the machine base 1, and an outer race 4 is provided in the front part of the circular hole 3 (on the left side in FIG. 2).
At the same time, a large number of rollers 6, 6 (in the embodiment, 18
) are installed rotatably at equal intervals and on the same circumference.

A pulley is connected to the rear part of the circular hole 3 (which has a slightly larger diameter than the above, on the right side in FIG. 4) via a ball bearing 7.
The circumferential green concave portion 9 of No. 8 is rotatably iron-fixed to the back surface of the housing. A through hole 10 is bored in the center of the pulley 8, as shown in FIG. to protrude to. The spindle 11, 11a, 11
b spacing between the liners 12, 12, 12a to the opposite wall
, 12a, 12b, and 12b are fixed, respectively, and the backers 13, 13a, and 13b are sized to be iron-inserted between the respective liners. The liners 12a, 12a, 12b,
Two ball grooves 14, 14 (arc-shaped in cross section) are provided in parallel in the radial direction on the opposing surface of the ball 12b. A backer 13 having a front U-shaped recess between each of the liners 12 (from now on, 12 will represent all liners)
, 13a, 13b are iron-filled, and the backers 13, 1
The bases of the dies 16, 16a, 16b are iron-filled inside the dies 3a, 13b. Said backer 13, 13a, 13
On the outer wall of b are the ball grooves 14 of the liners 12, 12,
Ball grooves 17, 17 having an arcuate cross section are located at positions corresponding to 14.
A large number of balls 18, 18 (hard balls) are iron-filled between the ball grooves 14, 17, and the balls 18 are held so as not to escape by the tips of plate springs 19, 19a fixed to the inner and outer walls of the liner. has been done.

Three pairs of ball grooves 20, 21 are provided on the inner walls of the backers 13, 13a, 13b and on the outer walls of the bases of the dies 16, 16a, 16b, respectively. A large number of balls 22, 22 are iron-filled, and each ball 22, 22 is attached to a backer 13, 13a,
Escape is prevented by pins 40, 401 provided close to the inner end surface of 13b. 4 Said backer
13, 13a, 13b and the dice 16, 16a, 16b are provided with ventilation holes 24, 25 in the horizontal direction, and the ventilation holes 24, 25 are connected to the air supply hole 2 provided in the center of the pulley 8.
It is carrying 6. The spindle 11, 11a, 11
Pins 27, 27a, 27b, stop pins 28, 28a,
28b is provided, and the spindle pins 2 and 7, 27a:
27a, 27b; 27b, 27 have plate springs 29, 2
Both ends of 9a and 29b are fixed respectively, and the plate springs 29,
Attach the intermediate portions of 29a and 29b to the stop pins 28, 28a, 28b.
The dies 16, 16a, and 16b are hooked to each other to apply a shaking pressure to each die 16, 16a, 16b. A collar 31 is inserted into the right side (in FIG. 2) of the through hole 10 of the pulley 8 via a ball bearing 30, and a ring 3 is attached to the outer periphery of the right end of the collar 31.
An air supply port 33 is closed at the end face of the ring 32, and an air supply hose end (not shown) from a compressor is connected to this air supply port 33.

In the embodiment described above, one spindle was provided protruding from the pulley 8, but the number of spindles can be increased or decreased between 2 and 4. Further, the material of the zero pulley and the spindle is the same as a known material (for example, steel), and the liner is made of special steel. Furthermore, the die is made of a material such as tungsten carbide, which has a hardness similar to that of special steel even at high temperatures (for example, 80,000 ℃). The hard ball is made of tungsten carbide, special steel, or stainless steel. The die of the staging machine of this invention protrudes long into the space as shown in Fig. 1, and as shown in Fig. 2, there are no obstructive devices nearby other than the processing section, so the material feeding side (Fig. The heating device for the material and dies is placed on the left side (center left), and the material heat retention device or atmosphere of inert gas, argon gas, hydrogen gas, etc. It is also possible to add special equipment, such as a raised anti-oxidation castle.

In the figure, 15 is a liner, 38 is the cover, 39 is a rear cover, and four ball stopper pins. Next, the operation of this invention will be explained.

Start the motor, rotate the pulley 8 via the belt 43, and heat the workpiece 35 to an appropriate temperature (for example, 1000
00) and feed it as shown by the arrow 37 in FIG.
Heat to 0.

If the motor 41 is started at that time, the spindles 11, 11a,
11b rotates in the direction of arrow 23 (FIG. 1). As the spindle rotates, the backers 13, 13a, 13b also rotate in the same direction, so the contact between the outer end curve of the backer and the roller 6 causes the backers 13, 13a, 13b to move toward the center as shown by arrow 36. As a result, the dies 16, 16a, and 16b are also pushed out in the same direction to process the workpiece 35 into a predetermined external shape. In this case, since the processing end of the die is heated to, for example, 80,000 ℃, the temperature of the workpiece 35 hardly decreases, and continuous processing can be performed. On the other hand, the die and the backer are in contact through the ball and the liner 15, but the ball is in line contact and the amount of heat transferred is severely limited due to thermal saturation, and the liner 15 portion passes through the ventilation hole. Since the ball part is cooled by air, the amount of heat conducted from that part is small, and since the backer and liner are also isolated by the ball, the amount of heat transferred becomes smaller and smaller, and eventually the roller and ball The total amount of heat conducted to the bearing is reduced, and there are almost no adverse effects caused by the temperature rise in the vicinity of the bearing. That is, according to the present invention, since the spindle is provided protrudingly from the pulley (either integrally cast or separately manufactured and fixed with bolts), the input section by the pulley and the processing section of the die held via the spindle are very close to each other. There is no twisting on the power transmission shaft, resulting in stable operation.

In addition, by rotatably mounting the pulley on the thick plate-shaped housing, the - It has the effect of stably holding the Lee, the depth of the device can be reduced, and the post-processing device for the workpiece can be set relatively freely.

[Brief explanation of drawings]

Fig. 1 is a partially enlarged front view of an apparatus for carrying out the present invention with the cover removed, Fig. 2 is an enlarged side view with a partially sectioned section, Fig. 3 is a rear view, and Fig. 4 is a set of backers. FIG. 5 is an enlarged perspective view of the pulley, FIG. 6 is a front view of the pulley, and FIG. 7 is a sectional view of the pulley. 2 """ Housing, 6... Loaf, 8... Pulley, 11, 11a, 11b... Spindle, 12... Liner, 13, 13a, 13b... Hacker, 16, 16
a, 16b...Dice. Figure 1 Figure 2 Figure 3 Figure 6 Figure 7 Figure 4 Figure 5

Claims (1)

[Claims] 1. A die with a bucker is arranged radially inside a roller rotatably installed on a concentric circle, and the die is moved in the radial direction by contact between the roller and the bucker due to rotation of the die with a bucker. In a swaging machine that processes material charged between dies, the rollers are installed at equal intervals on the inner periphery of circular holes provided perpendicularly to the wide wall surface of a thick plate-like housing, and A swaging machine characterized in that a pulley with a spindle is rotatably fitted into an annular protrusion provided on one side edge of the hole, and the spindle is protruded to the inside of the roller using the backer as a guide. . 2 The pulley has V-grooves for attaching a V-belt arranged in parallel on the outer circumference, a predetermined through hole in the center, and a plurality of spindles arranged at equal intervals outside the through hole parallel to the center axis of the pulley. A swaging machine according to claim 1, wherein the swaging machine is provided in a protruding manner. 3. The swaging machine according to claim 1 or 2, wherein the spindle is molded integrally with the pulley or molded separately. 4. The swaging machine according to claim 1, 2 or 3, wherein the pulley is provided with an air supply hole for cooling the die and spindle at the edge of the central through hole.