JPS5954440A - Rough forging device for hot forging - Google Patents

Abstract

PURPOSE:To obtain a titled device which is capable of forming easily a rought forging whose sectional area is different in the axial direction, by operating through a link mechanism a slide block which is brought into contact with a holding face provided on a punch holder, and moving horizontally the punch holder. CONSTITUTION:A blank material which is almost equal to a part which is the smallest in a cross-sectional area of the center part, and is longer than a product is set to a die 1, and when a press is operated, a punch 6 hits against the die 1. The punch 6 presses the die 1 by hydraulic pressure of a pressure chamber 14', and simultaneously, a slide block holding face 19 is rought into contact with a pressure receiving face 20. Subsequently, a slide block 9 moves downward, and a punch holder 8 advances by a link 10. As a result, a punch 7 upsets the blank material from both ends in an enclosed die, and the blank is formed to a desired shape. In this case, since a punch holder 13 lowers, a liquid of a pressure chamber 20 is returned to an accumulator provided on the outside.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a hot forging press. In order to improve the forging yield during hot forging, it is desirable that the forging material has a volume distribution equal to that of the product. However, in reality, round bar squares are used, so a method is used in which a rough area is created by preforming 1 and the shape approximates the sequential 1-4 shape. However, when using a forging press to make the volume distribution close to the volume distribution of the product, it is difficult. This is particularly difficult for products as shown in FIG. 1(a).

Therefore, preforming is performed using a machine other than the press mechanism, such as a forging roll or a cross roll.
A method is being used to shape the wasteland.

The purpose of the present invention is to provide a device that can form rough shapes that are difficult to form using a forging press.
This is the first objective.

Conventionally, in the case of the ηII product shown in FIG. 1(,l), there are the following methods for forging it. 1) First, ignore the forging yield and use a material with a cross-sectional area approximately equal to the maximum cross-sectional area in the axial direction of the 'C product (Fig. 1 a) to make W, and discharge the narrowed part in the center as iJ paris. Method. 2) −
'4 A method in which the material is assembled using a machine other than a UQ B press to form a desired rough surface (Fig. 1 1)), then transported and forged using a press.

These 319 force-making methods install a die-holder to hold the mold in the die section of the forging press, and by kneading, the mold for culm work is placed on the claw side. do. Typical molds (IF types include upsetting type 1,
Rough hammering type 2, finishing molding, removal) l; IJ 4 straddles are arranged, but these all have l, + I; IJ and 1 - type, and upper jj QIJ moves in the direction of F type. Look at the facts Jj
A common method is to f.

Misfire 1314; j This relates to the gay holder for J3 in such a forging press, especially the gay holder for the forming die of Ara [ya], which corresponds to No. 1-11.

Firstly, I will explain about the mold of the culm and the holder.

FIG. 2 is a 14-sided view showing the upper die holder with molds 1 to 4 for each process taken up. The molds 2 and 5.4 have a metal ring J, that is, a rough ladle J (same as in the case of 519 construction by the conventional method), a finishing ladle mold and a punching mold 1, and the opening C1 is also the same as that of the slave. Kzu> IpJ 2.3, 4 and 1 + IQ
, 1 upper mold (shown at 4f) ・1) Same as conventional.

13 in Figure 6, upper die holder 1 and lower die holder 5.
Example Among these, at the location 1- from the 1st section, there is a device J with a cross-sectional shape as shown in Figure 3G.
Install KJ.

This λ is set at f when the upper mold 6 is attached to the upper mold holder 17.
l, Hi4 thousand mold holder 17s1 liquid flow 5 people []14
The high-strength liquid applied to the pressure chamber 14 constantly exerts a downward force ('+).
The F limit of is determined by the stomper nut 15'.

Also, Kamikin 11 Revoluge 17 is by Kitebost 15 -
1. It is restrained except for the tonneau j direction.

1jJ゛-F9 Monk 1 is fixed on Todai Porta 5;! be done.

One bunch boulder 8 movable in the water direction is thrown into the upper die holder 5, and the punch holder has six links 10.
It can move to the water/F force plane by 4'A I'fIf. That is, when the pressure-receiving surface 2o of the sliding block 9 provided on the lower die boulder 5 and capable of moving 1000'' is pressed by the -1-die H'l i1 mountain holder 13σyθ lock presser 19, the sliding block 9 is Moving block presser 19 (□: moves in the j-do direction,
Punch holder 8 force] water/11 direction (711<).

Punch boulder 8 to L171 (ゝF force side to the edge of the material'?
Attach Punch 7 to remove IJtI). K
Because it is always pressed down by the spring 12,
When there is no force pushing the pressure receiving surface 20 and i+:
Punch boulder 8 retreats, and slide 1 rib IJ Tsuk 9 -1-
Move with force.

Now, when trying to shape the wasteland shown in Figure 1 (+) into a Y shape, the cross-sectional area of the central part of Figure 3, which is less than 11, is approximately equal, and the length is 1 cusp or more than the product. Prepare the material and mold 1
When the press is set to U' and the press is operated, the mold 6 first hits the lower mold 1 (Fig. 4). From this point on, the upper mold 6 is placed in the juice chamber 1.
At the same time, the sliding block presser 19 and the pressure-receiving surface 20 come into contact with each other by the hydraulic pressure of 4, and when the press is pressed, the sliding block 9 moves to the position of 0, and the link 10 punches. Holder 8 or before ff[j. Bunch 7 then upsets the sealed gold from both ends, forming it into the desired shape.

At this time, since the upper die boulder 13 is closed, the liquid in the pressure chamber 20 is drained by an external pressure regulator (not shown).
will be returned to. When the molding is finished and the 7° pressure rises, the bunch holder 8 is moved back by the spring force, and the pressure chamber 14' is again filled with liquid by the accumulator, and the upper mold boulder 1
ノか) ゛ is pushed out.

Below 1. According to the present invention, 1) III in the axial direction
The forging yield can be improved, and the forging yield can be improved, and the forging yield can be improved even if the parts have different diameters, as shown in Fig. 4. It's hard to do C.

2) -1- The contact start zea and lKf between the mold and the lower mold can be easily adjusted to 4+ and 1 by using the stone chain 15.

3) 1-The contact load between the mold and the lower mold can be easily changed by changing U1.

4) By adopting the link (f'f4), a small 1.downward movement can be converted into a small water 1'4'? movement.Therefore, l
r, The moving distance of the Q-shaped holder may be small.

5) Install this device in a part of the die holder! -), it has the advantage that it can be used in conjunction with the conventional forging method for TiC.

4 Drawing “1v1 in 1 Yumei” 1st] East 1 - Forging (jj'4 item and perspective view of its wasteland.

Figure 2 shows the die holder for forming rough ground according to the invention.
A cross-sectional view of a fλ forging press.

FIG. 6 is a 11.1-II+ sectional view of FIG.

Figure 4 shows the mold for forming rough ground φ) Oblique? ’,i’,Fig.

In the diagram; 1. 1st culm - 1 mold (upset type) 2. 2nd culm 1 mold (rough + 1 mold) ro 2nd process lower mold (shape J: tJ)';'t )4v
4-+l 1. ! Shimoganebu! (Cut out)'l'J) 5 Upper die boulder 6 1st, 1st king's mold - Mold (upset type) 7 Bunch 8 Nozenchi holder -
9 Sliding block 10 Link 11 Eject turbine 12 Suff' I
J link 13"-Die holder 14 Liquid inlet 14 1 Soil force chamber 15 Guide point 7 15 Stopper nut 16 Seal 1
7 Upper money 1. Reholgu-18 Kamifunoheri 111 (Tue-
19 Sliding presser surface 20・TS: IE tni2
1 Large row part 22'I'i-)';!
'? lζ or more 11 (i person Sumitomo iR Machinery Co., Ltd. j & j - agent patent attorney person Hashi So<'l; 1 Figure?l520 1 No. 31" No. 41 -2.

Claims (1)

[Claims] A die holder is equipped with an upper die holder which is immersed in one section of the die holder, is immersed in liquid, dried in the chamber, is forced by f = 1 to the F total 4 II 11 side by F, and whose contact start position is adjustable. It has an L die holder, and -1-, the movement of the sliding block that slides downward in contact with a presser provided on the goo holder is horizontally moved by a pair of punch holders equipped with a punch via a link mechanism. Rough-forming equipment for hot forging that can pressurize anything.