JPS591041A - Upsetter - Google Patents

Abstract

PURPOSE:To enable reasonable forging of a forged product and simultaneous forging of product that needs plural processes by making plural fluid pressure cylinder units that conform to different loads necessary for each stage interchangeable to one having a necessary capacity ratio in obtaining a forged product by plural stages. CONSTITUTION:Plural forming sections 2, 3 are provided on the connecting face of a segmental die 1, and each section consists of a clamping die that clamps a material P and an upsetting die that upsets the material. Punches 4, 5 can be inserted to or taken out from corresponding forming sections 2, 3. A maximum- diameter fluid pressure cylinder 10 corresponding to the total load of the punch of a fluid pressure cushion mechanism 8 and a pressing ram 11 are structured in a unit, and a selective changeover of different unit to a slide 9 is made possible. The punch 4 is attached to the cylinder 10 and the punch 5 is attachably and detachably installed to another movable ram 17. These are driven in the upsetting direction by a device 14, and after preliminary forming the material P, the material is shifted to the forming section 3, and formed again.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an upsetter, and more specifically to an upsetter with an improved punch-cliff mechanism.

When making a product with thickened parts through hot forging.

In contrast to the case where the heated material is formed by forging once, it may be necessary to form the heated material multiple times.

In this case, the finishing process generally requires a larger load than the roughing process.

The required capacity ratio between the first step and the second step is not necessarily constant, and may be, for example, 1:2, 1:3, or other cases. Further, in some cases, the first step may require a greater force than the second step.

Conventionally, in view of the actual situation, in an upset mechanism including a bunch drive device that drives a punch via a fluid pressure cushion mechanism, the fluid pressure of the fluid pressure cushion mechanism is adjusted to the required capacity ratio through a relief valve mechanism. However, this operation was complicated and only one forged product could be formed at a time.

Therefore, the present invention was devised in order to solve the problems of the prior art. By replacing the unit with one with the required capacity ratio, it is possible to easily forge a single forged product according to the required load of each process, or to forge items in multiple processes at the same time. The purpose of the present invention is to provide an upsetter that can perform the following steps, and furthermore, to provide an upsetter that can handle the situation where the required capacity ratio is opposite to that of the first step and the second step by reversing the fluid pressure cylinder unit without replacing it. With the goal.

In order to achieve the first object of the present invention, the present invention includes a mold in which a plurality of molding parts are arranged in parallel, a punch that can be inserted into and removed from each of the molding parts of the mold, and a fluid-fluid-filled mold for the punch. In an upsetter I/C equipped with an upset mechanism including a punch drive device driven via a pressure cushion mechanism, a fluid pressure shoe mechanism slides a pressure ram into a maximum diameter fluid pressure cylinder corresponding to the full punch load. A pressurizer configured to be movably fitted, a punch is attached to the fluid pressure cylinder, and a punch is provided at a tip corresponding to the load of one or more punches in the fluid pressure cylinder. The movable rams are operably engaged with each other, and further,
The first feature is that the maximum diameter fluid pressure cylinder is composed of a plurality of units according to the required forging capacity ratio, and the maximum diameter fluid pressure cylinder that is the unit is attached to be alternatively replaceable. That is.

Furthermore, in order to achieve the second object of the present invention, the present invention provides a mold in which a plurality of molding parts are arranged in parallel, a punch that can be inserted into and removed from each of the molding parts of the mold, and the punch. In an upsetter equipped with an upset mechanism including a punch drive device that drives the punch via a fluid pressure cushion mechanism, the fluid pressure cushion mechanism allows the pressure ram to slide freely within the maximum diameter fluid pressure cylinder that can accommodate the full punch load. A pressurizer configured to be fitted into the fluid pressure cylinder, and a punch is attached to the fluid pressure cylinder, and a punch is provided at the tip corresponding to the load of one or more punches in the fluid pressure ring. The movable rams are engaged with each other so that they can operate independently;
A second feature is that a reversing mechanism is provided that allows the maximum diameter fluid pressure cylinder to be rotated and fixed around its axis.

Embodiments of the present invention will be described in detail below with reference to the drawings.

Fig. 1 Each figure shows the structure and operation of an embodiment of the present invention, in which (1) is a mold shown as a proportion type, and its mating surface has molded parts (2) and (3). In the example of one plurality, two are arranged in parallel. Each of the forming parts (2) and (3) is usually composed of a cylinder die that cylinders the material (P) and an upset die that upsets the material (P).

(4) (5) are punches and holders (6) (7)
It is detachably attached with a screw structure or the like, and can be inserted into and removed from the corresponding molded parts (2) and (3), respectively.

(8) is a fluid pressure cushion mechanism, slide (9)
and a fluid pressure cylinder αQ with a maximum diameter corresponding to the full punch load, which is detachably attached to the slide (9), and
It consists of a pressurizing ram α°C which is oil-tightly fitted into the cylinder QQ and is slidable. Aαυ is constructed into a unit, and a different type of unit can be selectively replaced on the slide (9).

Note that an oil passage @ is formed in the pressurizing ram (b), and the oil passage (
2), the V cylinder αQ and the pressure accumulator @ are communicated.

α◆ is a punch drive device, and in this example, it is shown in the form of a crank consisting of a crank arm (toward) and a connecting rod α@.
A connecting rod α0 is pivotally connected to the slide (9).

One of the punches (4) and (5) is removably attached to the fluid pressure cylinder αQ via the holder (6), while the other is attached to another pressurizing movable ram αη. 7
) It is removably attached via.

That is, in this example, a cylinder portion (to) having a cross-sectional area of 100 mm is formed in the fluid pressure cylinder QQ with respect to the cross-sectional area of the fluid pressure cylinder αO (corresponding to the pressurizing area of the pressurizing ram (b)). , a pressurizing movable ram αη is fitted into the cylinder portion (to) so as to be able to operate independently, and a holder (
The punch (5) is removably attached via the hole 7).

The operation will be explained with reference to FIGS. 1 (1) (2) (3) (4).

Figure 1 (1) shows the middle of forming in the first step, in which a material (B) shown by a pipe is attached to one forming part (2), and the material (P) is prevented from moving in the axial direction. It is held by a grip mechanism (not shown).

Therefore, by actuating the punch drive device 4 in the upset direction, the entire slide (9) slides to the left in the figure, and the punch (4) attached to the fluid pressure cylinder QQ causes the material to be preformed. Furthermore, by engaging the punch drive device (141) and operating in the upsetting direction, the upsetting in the first step is completed as shown in FIG. 1 (2). , the hydraulic cylinder αQ retreats as a relative movement, thereby exerting a cushioning effect.

Next, moving to the second step, the punch drive device α4 is moved backward to pull out the punch (4), and at the same time, the grip mechanism is released and the material formed in the first step (
The material P) is transferred to the forming section (3) as shown in FIG. 1 (3), and while the material ψ) is gripped by the grip mechanism again, the punch drive device α→ is operated in the upsetting direction again, and during this operation, the punch (5) is used to form the material as shown in the figure, and by further advancing the punch (5), the forming in the second step is performed as shown in Fig. 1 (4). At this time, as is clear from FIG. 1 (4), the movable ram αη to which the punch (5) is attached independently moves backward as a relative motion, thereby exerting a cushioning effect.

Figure 1 (5) and (6) are examples in which a larger load is required in the first step and the second step, respectively, and in this illustrated example, the punch mandrel αI wire and punch holder (6) (7 ), by removably providing the coupling plate Qp between the connection parts with the coupling plate (
When C) is attached, a large load can be applied to each of the punches (4) and (5).

Therefore, as shown in Fig. 4 (1), (2), (a), (4), and (5), the first step and The capacity ratio of the second process was 1:3 (Fig. 4 (1)), 1:
2 (Figure 4 (2)), 1:1 (Figure 4 (3)), 1:0
．． 5 (Fig. 4 (4)), 1: Tsutomu (Multiple cylinder units) K as shown in Fig. 4 (5)), and this cylinder unit is attached to the slide (9) so that it can be replaced. .

Incidentally, when replacing the cylinder unit, there is no problem in replacing the cylinder unit by attaching the respective punch holders (6) and (7) in a removable manner.

Referring to FIG. 3, another useful embodiment of the present invention is illustrated.

In the embodiment shown in FIG. 3, a hydraulic cylinder (10) is fitted to a slide (9) having a 20% structure via a cylinder guide device (to) on the fixed side bed @, and the cylinder αQ
A gear (C) is formed on the outer peripheral surface of the fluid pressure cylinder αQ, and a drive gear (2) meshing with the gear (C) is connected to a motor (to), etc. This embodiment differs from the embodiment shown in FIG. 1 in that it is equipped with a reversing mechanism that is driven by a motor, but the rest is the same. Accordingly, members, parts, etc. in the embodiment of FIG. 3 that are common to those in FIG. 1 are designated by common reference numerals.

In the embodiment shown in FIG. 3, the first step is carried out by reversing the fluid pressure V cylinder αQ to its axis due to the engagement of the drive gear (c) and gear (2) through the activation of the motor (to). It is possible to cope with the required forging capacity ratio in the second process,
FIG. 5 (1) <2) N indicates an example of the configuration of the fluid cylinder unit.

The second diagram shows an example in which the first embodiment of the present invention is specifically applied to an absetter (2). Yes, both are pivotally connected via a horizontal fulcrum shaft (toward) so that they can be opened and closed.

A proportion type @ (to) consisting of an upper and lower die holder 01m, an upper and lower upset die ELLC14, and an upper and lower comb die (to) (to), etc. is attached to the opening/closing opposing surfaces of the bed holder and tong holder, respectively.In this example, two pieces are installed. Molding part (2) (3)
are installed side by side.

(To) is a pair of left and right grip pull rods, the upper part of which is pivotally connected to the tong head via the fulcrum shaft (2), and the lower part of the pull rod (2) to the bed head and the bottle via the fulcrum shaft (2). The grip is pivoted on the link,
In this example, a grip drive mechanism is attached to the grip link as a telescopic cylinder device.

Furthermore, two wooden punches (4) and (5) are mounted on the sliding surface of the upper surface of the bed (a) via a fluid pressure cylinder mechanism (8), and a punch drive device (1) shown as a telescopic cylinder in this example.
4) It is attached so that it can be inserted into and removed from the molded parts (2) and (3).

In this second diagram, first, in FIG. 2 (1), when the material (G) is charged into one molding section (2) K at a ratio of IJJI@(to) through a conveying device (not shown), Figure 2 (2)
As shown in , the grip drive device extends in this example to apply the necessary mold closing force to the split mold via the pull rod and the like.

Therefore, when the punch drive device (B) is extended, the fluid pressure cushion mechanism (8) is slid forward along the sliding surface (2), and in the middle of this sliding, the first process material (2) is moved forward.
P) Upsetting of the head is performed, and the load at this time cushions the fluid pressure cylinder α1, and the punch (
The first step of upsetting is completed at the stroke end 1c in step 4), and the load at this time is cushioned by the pressure ram α.

After completing this first process, the punch drive device α
After reducing the width and retracting the punch, in this example, the grip drive device was made to perform a reduction operation to release the split mold @ (to), and the first step was completed by the conveyor device not shown. Material (P
) of the adjacent molding part (3) as shown in Fig. 2 (7), and as described above, the second The head upsetting process in the process is performed by the punch (5), and the finishing fluid pressure cushion of this punch (5) is cushioned on the movable ram Q'7) side in this example. .

In this way, after all the upsetting operations of the head are completed, such as the so-called rough finishing process in the first step and the so-called finishing process in the second process, the punch driving device α4 is reduced. After the punch is retracted and the proportioning die is opened, the product ω1) is taken out of the upsetter by a conveying device not shown in the figure, as shown in FIG. 2 (9).

The present invention is carried out as described above, and when making a product by hot forging that requires multiple processes, multiple fluid pressure cylinder units are installed that can quickly respond to the different loads required for each process. Since it is possible to install by replacing it with one that has the required capacity, it is possible to easily forge one forged product according to the required load for each process, which means that the machine is compact and consumes less energy. Furthermore, since unnecessary large loads are not applied to the product, the precision of the product is high and the life of the mold can be extended.

In addition, it is possible to forge items in multiple processes at the same time, which greatly increases productivity, and if the second feature configuration is followed, which is equipped with a reversing mechanism that allows the fluid pressure cylinder to be reversed around its axis. , the required capacity ratio is 1%, the second process, etc. When each process is reversed, it can be handled without replacing the fluid pressure cylinder unit, which not only greatly improves productivity, but also improves work efficiency. It is also advantageous in terms of

[Brief explanation of drawings]

The drawings show embodiments of the present invention, and FIGS. 1 (1) (2)
(3) (4) shows the configuration and operation order of the first embodiment,
Fig. 1 (5) and (6) are configuration diagrams in which additional embodiments are provided to the first embodiment, and Fig. 2 (1) to (9) are diagrams in which the first embodiment of the present invention is applied to a specific upsetter. For example, Fig. 2 (3) is the A-A arrow diagram of Fig. 2 (1), and Fig. 2 (4) is the A-A arrow diagram of Fig. 2 (1).
2) is a sectional view taken along the line B-B of FIG.
Figure (9) shows the operating sequence. Also, Figure 3 (1)
(2) and (3) are examples showing the second feature of the present invention;
Figure (1) is a side sectional view of the main part, Figure 3 (2) is a sectional view when the same is reversed, Figure 3 (3) is a sectional view taken along the line c-c of Figure 3 (1), FIGS. 4(1) to (5) are explanatory diagrams showing several examples of the cylinder unit of the first embodiment, and FIGS. 5(1) (2)
) is an open plane showing the cylinder unit in Fig. 3. (1)...Mold, (2) (3)...Molding part, (4
) (5)...Punch, (8)...Fluid pressure cushion mechanism, QQ...Fluid pressure cylinder, α sword...Pressure ram, α4...Punch drive device, αη...Pressure Pressure movable ram, (To)... Cylinder part for αη, (Foundation)... Reverse transmission mechanism. Patent applicant Kobe Steel, Ltd. Figure 1 (5) Figure 3 ('1) Figure 2 (8) Figure 217 (7) IJ Figure 2 (4) 1 = Product = = =;

Claims (1)

[Claims] 1. A mold in which a plurality of molding parts are arranged in parallel, a punch that can be inserted into and removed from each of the molding parts of the mold, and the punch is inserted into and removed from the molding part of the mold through a fluid pressure shoe V-stroke mechanism. In an upsetter equipped with an upset mechanism including a punch driving device,
The fluid pressure cushion mechanism is configured by a pressurizing ram being slidably fitted into a maximum diameter fluid pressure cylinder corresponding to the total punch total load, and the punch is attached to the fluid pressure cylinder, and the fluid pressure V One or more pressurized movable rams each having a punch at the tip corresponding to each punch load are fitted in the cylinder so as to be able to operate independently of each other), and further, the maximum diameter fluid cylinder is An upsetter comprising a plurality of units according to a required forging capacity ratio, and characterized in that a maximum diameter fluid V cylinder, which constitutes the unit, is attached to be optionally replaceable. Z: an upset mechanism that includes a mold in which a plurality of molding sections are arranged in parallel, a punch that can be inserted into and removed from each of the molding sections of the mold, and a punch drive device that drives the punch via a fluid pressure cushion mechanism. In the upsetter IC, the fluid pressure cushion mechanism is configured by a pressurizing ram movably fitted in a maximum diameter fluid pressure cylinder corresponding to the full punch load, and the punch is attached to the fluid pressure cylinder. and one or more pressurizing movable rams each having a punch at a tip corresponding to each punch load are fitted in the fluid pressure cylinder so as to be able to operate independently from each other,
The upsetter further comprises a reversing mechanism that allows the maximum diameter fluid pressure cylinder to be rotated and fixed around its axis.