JP3712524B2 - Disc forged product manufacturing equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to manufacturing apparatus for disc-shaped forging. For example, the present invention is applied to the manufacture of a disk-shaped forged product such as an impeller cover.
[0002]
[Prior art]
A conventional forging process of a disk-shaped forged product such as an impeller cover will be described with reference to FIG.
In the conventional method, the material 01 molded as shown in FIG. 6A is subjected to a hole expanding operation for determining the inner diameter of the material 01 as shown in FIG. 6B (in addition, the hole expanding operation is completed). The material thus obtained is indicated by reference numeral 02).
[0003]
Next, as shown in FIG. 6 (c), a wedge-shaped tool 04 is used to perform a back-cutting operation for extruding the meat of the buttocks (note that the material for which the back-cutting operation has been completed is indicated by reference numeral 03). Yes.)
Subsequently, as shown in FIG. 6 (d), rough machining of the heel portion is performed using a flat tool 06 (note that the material after the rough machining is indicated by reference numeral 05).
Thereafter, as shown in FIG. 6E, in the forging finishing process, the material 05 is turned upside down and placed on the die 07, and processing for aligning the outer peripheral portion of the material 05 along the die 07 is performed.
[0004]
[Problems to be solved by the invention]
By the way, in the above-described conventional technical processing method, the ridgeline (the shape of the outer peripheral portion) of the main part shape of the material is formed along the mold 07, but the inner peripheral portion of the material is not formed by molding, so that the finishing dimension is set. On the other hand, there is a drawback that there is a lot of extra material and the dimensional accuracy is poor.
[0005]
In addition, since the boss portion 05a of the forged product is formed by die forming, a large number of dies 07 are required to meet various specifications, and the cost is increased.
In addition, “finish” in the present application means finishing as a forged product, and means a dimension including machining allowance.
[0006]
The present invention has been made in view of the above prior art, and an object of the present invention is to provide an apparatus for manufacturing a disk-shaped forged product that can reduce dimensional accuracy and machining allowance and can greatly contribute to the reduction of machining costs.
[0007]
[0008]
[Means for Solving the Problems]
Disc-shaped forging manufacturing apparatus according to claim 1 of the present invention for solving the aforementioned problems is a device base comprising a slide surface curved on an upper surface provided with a wheel on the bottom, slidably mounting on said slide surface A slide base that is placed, an upper shaft that is pivotally supported by the slide base, a die that is mounted on the upper shaft, and a lower shaft that is flexibly connected to the upper shaft, By combining the movement of the lower shaft in the axial direction and the movement of the device base, the forging angle and position by the punch to the ring-shaped material attached to the die is changed, and the boss portion of the material is mainly used. Forging or forging is mainly performed by forging mainly the flange portion of the material, and finely correcting forging bias.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below in detail with reference to the drawings.
An apparatus for manufacturing a disk-shaped forged product according to the present embodiment is shown in FIGS.
As shown in the figure, the apparatus base 1 is provided with wheels 1a on the bottom surface thereof, and can move along the direction of arrow A.
The upper surface of the apparatus base 1 is a curved slide surface 1b, and the slide surface 1b is curved along the arrow A direction.
[0010]
The slide base 2 is provided with wheels 2a on its bottom surface, and is slidably disposed on the slide surface 1b.
Therefore, the slide base 2 is configured such that the wheel 2a slides on the slide surface 1b and can move along the slide surface 1b in a curved line in the direction indicated by the arrow in the figure.
A ring-shaped swivel base 2b is attached to the slide base 2 by welding or bolt fastening with an inclination of about 45 °.
[0011]
The universal joint mechanism 3 is configured by connecting an upper shaft 3a and a lower shaft 3b by a universal joint 3c.
The upper shaft 3a is inserted into the turning base 2b of the slide base 2 and is supported so as to be able to turn.
In addition, the upper shaft 3a is disposed in an inclined state with respect to the horizontal plane, and the lower shaft 3b is disposed in a state in which the axial direction coincides with the A direction and is parallel to the horizontal plane.
[0012]
Therefore, in the universal joint mechanism 3, when the lower shaft 3b turns around the axis, this turning force is transmitted to the upper shaft 3a via the universal joint 3c, and the upper shaft 3a turns around the axis.
[0013]
Further, when the lower shaft 3b moves in the axial direction (arrow B direction), the slide frame 2 that supports the upper shaft 3a in a pivotable manner also moves in the B direction and slides on the slide surface 1b.
In this way, when the slide base 2 slides on the slide surface 1b, the shaft inclination angle of the upper shaft 3a changes.
[0014]
In FIG. 1, the axis inclination angle is α, in FIG. 3, the axis inclination angle is β, and in FIG. 4, the axis inclination angle is γ.
The axis inclination angle has a relationship of γ>α> β.
That is, in FIGS. 1, 3 and 4, the shaft inclination angle when the slide base 2 is located on the right side of the slide surface 1 b is large, and the axis tilts as the slide base 2 slides from the right side to the left side of the slide surface 1 b. The corners are getting smaller.
That is, the inclination angle of the upper shaft 3a of the universal joint mechanism 3 is determined by changing the position of the lower shaft 3b of the universal joint mechanism 3.
[0015]
The flange 4 is welded or mechanically attached to the upper shaft 3 a of the universal joint mechanism 3.
A die 5 is mounted on the upper shaft 3a, and the die 5 is positioned by contacting the flange 4. This die 5 turns together with the upper shaft 3a.
When forging the outer peripheral surface of the forged material 10, as will be described later, a punch 11 having a ridge line similar to the finished shape is used.
[0016]
The disk forged product manufacturing apparatus of the present embodiment having the above-described configuration is used in the manufacturing process shown in FIG.
First, as shown in FIG. 5A, each material is cut into an appropriate size from the bar-shaped forging material 6.
[0017]
Next, as shown in FIG.5 (b), a hole is drilled and the ring-shaped raw material 7 is made.
Subsequently, a disk-shaped forged product is manufactured from the ring-shaped material 7 by the method described below.
This process will be described with reference to FIG.
First, the die 5 is mounted on the upper shaft 1 a of the universal joint mechanism 3, the heated ring-shaped material 7 is attached to the die 5, and a part of the forged material 10 in the circumferential direction is formed by the gap between the punch 11 and the die 6. .
[0018]
Next, the gap between the punch 11 and the die 5 is opened, the lower shaft 3 b of the universal joint mechanism 3 is turned to turn the flange 4 and the die 6, and the forged material 10 is also rotated by the frictional force with the die 5. Then, by stopping at a predetermined position and closing the gap between the punch 11 and the die 5 again, the adjacent unformed parts are successively forged.
Subsequently, after the end of one round forging in the circumferential direction, the punch 11 is further lowered and forging is performed in the circumferential direction in the same manner.
[0019]
When the shape of the ring material 7 is optimal with respect to the target shape of the forged product, the final stage, that is, this is repeated as many times as necessary, and forging is performed until the gap between the punch 11 and the die 5 becomes equal to the size of the target shape. Perform and finish the product.
In the case of another product in which the ridgeline of the punch 11 is almost similar, and the punch 11 is pushed to the final stage, the outer dimension of the flange portion 10b of the forged material 10 is insufficient with respect to the target shape. Move the die 5 together with the base 1 in the direction in which the punch 11 moves away from the boss portion 11a of the forged material 10, that is, in the left direction in the figure, and mainly mold the flange portion 10b of the forged material 10 to bring it closer to the target dimension. Go.
[0020]
Even if the same product has a slight dimension shortage, it can be finely corrected by the same method.
In addition, when the boss part or the flange part is biased in the middle of the forging process, the lower shaft 3b of the universal joint mechanism 3 is moved to reduce the shaft inclination angle β as shown in FIG. 4 (α> β), as shown in FIG. 4, by conversely increasing the axis inclination angle γ (γ> α), the boss portion 10a periphery of the forged material 10 is mainly forged, or the periphery of the flange portion 10b. It can be corrected by mainly forging.
[0021]
Thus, according to the present invention, the shape can be corrected and formed by appropriately combining the movement of the molding point, that is, the movement of the apparatus base 1 and the change of each axis inclination. The cost can be reduced, which greatly contributes to the reduction of processing costs.
Furthermore, the present invention can be processed with a plurality of pairs of punches and dies even if the shape is similar to a certain range, even if it is not an all-type mold, and thus greatly contributes to cost reduction by this aspect.
[0022]
[0023]
[0024]
【The invention's effect】
Furthermore, the disc-shaped forgings manufacturing apparatus according to claim 1 of the present invention is slidably mounted and the device base having a slide surface curved, on the slide surface to the upper surface provided with a wheel on the bottom A slide base; an upper shaft that is pivotally supported by the slide base; a die that is mounted on the upper shaft; and a lower shaft that is flexibly connected to the upper shaft. The combination of moving in the axial direction and moving the device base can change the forging angle and position by punching the ring-shaped material attached to the die, so that the boss portion of the material is mainly used. It is possible to perform proper forming by forging the main body or forging mainly the flange portion of the material and finely correcting the forging bias.
[Brief description of the drawings]
FIG. 1 is a structural diagram showing an apparatus for producing a disk-shaped forged product according to an embodiment of the present invention.
FIG. 2 is a view taken in the direction of the arrow II in FIG.
FIG. 3 is an explanatory view showing an apparatus for producing a disk-shaped forged product with a changed shaft inclination angle.
FIG. 4 is an explanatory view showing an apparatus for producing a disk-shaped forged product with a changed shaft inclination angle.
FIG. 5 is a process diagram showing a manufacturing method of a disk-shaped forged product according to an embodiment of the present invention.
FIG. 6 is a process diagram showing a conventional method for manufacturing a disk-shaped forged product.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Apparatus base 1b Wheel 2 Slide mount 2a Wheel 2b Turning base 3 Universal joint mechanism 3a Upper shaft 3b Lower shaft 3c Universal joint 4 Flange 5 Die 6 Forging material 7 Ring-shaped material 10 Forged product 11 Punch

Claims (1)

  An apparatus base having a wheel on the bottom surface and a slide surface curved on the top surface; a slide frame slidably mounted on the slide surface; an upper shaft pivotably supported on the slide frame; A die attached to the upper shaft, and a lower shaft that is flexibly connected to the upper shaft, the combination of moving the lower shaft in the axial direction and moving the device base, Change the forging angle and position of the ring-shaped material attached to the die by punching, mainly forging the boss part of the material, or mainly forging the collar part of the material, to minimize the forging bias. An apparatus for producing a disk-shaped forged product, wherein proper forming is performed by correction.

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