JPS60102243A - Die forging device having high workability - Google Patents

Abstract

PURPOSE:To reduce manufacturing cost by providing a sub-die that slides on the recess of a die and flushing the tip of a thin projection of a work that comes out to the recess. CONSTITUTION:A die 11 having unevenness of the shape corresponding to a product is supported by a ram 12 and a holder 13 is fitted to it. A projected part 16 that projects in a recess part 15 of the die 11 is formed in a sub-die 14 fitted slidably in the die 11. When the sub-die 14 and punch 18 start operation, the sub- die 14 retreats until the work 4 is brought into contact with the tip face 20 of the die 11 by the pressure face 17 of a punch 18. When the punch 18 advances further, the work 4 projects to the recess 15, and a pedestal part 1 and a scroll part 2 are formed. Fluidity of the work 4 is increased in the aperture between the subdie 14 and formed part 16, and all tip faces come into contact with the formed part 16. Thus, a scroll part 2 of uniform height is formed, and cost can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mold making device using an extrusion mold with a high degree of deformation, and is intended to make the size and shape uniform after processing.

As shown in FIGS. 1(a) and (b), the scroll part 2 protruding from the outside 1 and the body of the cylinder 1"1
．． Parts that are thinner than the protrusion length: When newly manufactured, plastic modification by hammering or forging is required.

etc., but when doing mass production, C(l)
lf and others are often busy with forging and manufacturing.

For example, a part as shown in FIG. 1(a) is placed in a cylindrical Ti:1 holder 101 as shown in FIG. A spiral die 102 having a shape corresponding to that of the scroll portion 2 is integrally attached, and is inserted between the pressurizing surface 104 of the punch 103 and the die 102, which are fitted to the holder 101 so as to be able to lock and move freely. A workpiece (material) 4 is inserted, and a pressure source (not shown) is activated to make the upper end surface of the die 102 and the pressure surface 104 of the punch 103
As the tray approaches, workpiece 4 is pressed and a part of it is cut into gold die 1.
02 concave? A device in which the Xl (105) protrudes is known.

However, with such a device, there is a limitation in that the volume and volume of the recess 105 of the die 102 and the attachment of the pedestal part 1 and the bond cannot be precisely matched to the volume of the workpiece 40. Even! The upper end surface 5 of the scroll part 2 and the upper end surface 6 of the front part 3 of the parts to be used become uneven, and post-processing such as cutting is required. This phenomenon is caused by variations in the coefficient of friction at the contact area between the die 102 or punch 103 and the workpiece 4, and uneven distribution of blood pressure when the workpiece 4 is compressed.Generally, blood pressure is higher at the center. The length of the protrusion from the pedestal portion 1 tends to become longer as the length increases.

From this point of view, the present invention is shown in 1. in FIG. ), θ)) and the top end surface 6 of the scroll part 2, f, '+) part 3, etc., the tips of the thin protrusions protruding from the pedestal part S':B i@■ The purpose of this invention is to provide a complete forging device that can be aligned in the same direction, thereby reducing the machining time and manufacturing cost by omitting post-processing.

To achieve all of these goals, we will use Kihatsuri's high-performance die forging equipment! Sei is a punch formed at the tip of the Du King's face,
A die in which a concave and convex portion is formed to sandwich a workpiece and face the pressurizing surface of this pump, and this die and 1ffiJ.
A knob-like holder into which at least one of the punches is slidably fitted, and a swivel 1 in the recess of the AiJ die
The present invention is characterized in that it is provided with a sub-die which is freely fitted and presses against the tip of the work without being pushed out into the recess of the OiJ die due to relative movement between the punch and the die.

Therefore, according to the present invention, the tip of the protruding part of the workpiece that is ejected from the four parts of the die is formed into a total 1To- by the Zab die kH' that slides on the four parts of the die. Therefore, it is possible to align all of the tip surface defects of the thin-walled protruding parts of the parts to be forged9.
There is no need for post-processing at all, and manufacturing costs can be reduced. In addition, since the Zab die can move relative to the die, it is possible to freely change the height of the thin protrusion, which is advantageous in cases where the body yellow of the P1 workpiece changes. It is.

Hereinafter, the entire high-workability die forging apparatus according to the present invention is shown in Fig. 1 (a).
A cross section 11' of the main part of an embodiment applied to a part as shown in 11'? This will be explained in detail with reference to FIG. 3, which shows the structure, and Section 4, Introduction 1(a) to (C), which shows the work procedure.

A cylindrical die 11 having an uneven surface corresponding to the shape of the scroll part 2 is supported by a ram 12), and a cylindrical gold horn 13 is integrally attached to this die 11.
I'm here. The sub die 14 slidably fitted into the die 11 is formed with a spiral molded part 16 that protrudes from the four spiral parts 15 of the die 11, and the workpiece 4 inserted into the holder 13 is Pressure surface 17 facing the die 11 and the sub die 14 between the two: The punch 18 is slidably mounted on the holder 13 on the applied mud (not shown).
The fitting is broken. Note that an included pressure source (not shown) is also connected to the sub die 14, but the pressure of this sub die 14 on the workpiece 4 is the same as that of the punch 1 on the workpiece 4.
The pressure resistance of 8 is also small, and the workpiece 4 is deformed by +i++ (J).
In this embodiment, the tit punch IBFC pressurizing source 7y may be connected to the pressurizing force d, f= to the die as the punch 1d constant, and the die may be operated at J=).

Therefore, Zab Dice 14 and Punch 18 are made ii+! l
When the cutting starts, the pressurizing surface 17 of the punch 18 causes the die 14 to move backward until the workpiece 4 comes into contact with the tip surface 20 of the convex part 19 of the die 11 (see FIG. 4(a)), and then the pump 18 moves forward to hI. Is it the concavity of Sidaisu 11? The workpiece 14 is pushed out at '+315, and the pedestal part l and scroll part 2 are formed σ! I'll go. At this time, if a gap occurs between the tip end surface of a part of the scroll part 2 and the forming part 6 of the tube die 14 (see Fig. 4(b) J!Xt),
Since the pressing force is applied to the sub die 141'l and the forming part 16 of the sub die 14 is in contact with the other scroll part 2, the fluidity of the workpiece 4 into this gap is reduced and the scroll part 2 is For the tip [5 is all Zab dice 14
Finally, the base 115 part 1 of a predetermined thickness and the scroll part 2 of a uniform height are formed.
A part is molded (see FIG. 4(C)).

In addition, if the thickness of the pedestal l, h and rl-1 of the scroll part 2 can be calculated from the volume of the workpiece 4, first, with the pressure source of the tube die 14 stopped, only the punch 18 is operated, and the pedestal 1 is 14 sub dies worked hard to mold it.
The end surface of the scroll portion 2 may be aligned with the planar surface 5, or the position of the rib die 14 may be indexed and set in advance, and only the punch 18 may be actuated. Costume.

[Brief explanation of the drawing]

2FL 1 (a), (1)) is a perspective view of an example of a part to be processed by the present invention, j'f=2
1'J l Another conventional forging equipment f (L omitted + h does not represent forging, 1υ 1 side 1 n I, gs3 figure is unexploded IJ1) A machine P of an example of high processing die forging bed 'li'H !3 Cross-sectional view of *% structure, ffl'g 4 ltsul (a) ~(
c) l;r: (-TV work process diagram. In the figure, ■ is the pedestal part, 2 is the (scroll part, 3 rust) part, 41, L work 5.6 is the upper end surface , 11 is a die, 13 is a holder, 14 is a sub die, 15 is a four part, 16 is a molding part, 17 is a pressurizing surface, 18 is a punch, and 19 is a convex part. Patent applicant: Mitsubishi Heavy Industries Kyo Co., Ltd. (and one other person) ) Sub-Agent Patent Attorney) ゛C4 Shishibu (1 person) Figure 1 (Q) (b Figure 2 ＼ Figure 4 (o) (b) 11!; (C) Continuation of page 1 ■ Invention Masanori Masumoto [Co., Ltd.] Inventor Sada Shimazaki [Partner] Inventor Teruo Nakajima [Partner] Inventor Hyoji Yoshimura @ Inventor Yasutaka Mikami

Claims (1)

[Claims] A punch having a pressurizing surface formed at its tip, a die having a concavo-convex portion formed thereon and facing the pressurizing surface of the punch for clamping a workpiece, and at least one of the die and the punch are slidably fitted together. A cylindrical holder and a die inside the recess of the die. ; It is assumed that the sub die is movably fitted and presses against the tip of the workpiece that protrudes into the recess of the die due to the relative movement between the punch and the nil die. High processing die forging 3z equipment 1) Ji.