JPS5848252B2 - tanzo sochi - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION In a manufacturing apparatus for vacuum forging, a workpiece is placed in a forging press, and the necessary vacuum is introduced into a chamber surrounding the press, at the same time heating the workpiece in preparation for forging. Common.

Such techniques require a long time for each forging cycle since the press is not activated while the workpiece is heated and a vacuum is created around the press.

This technique was important because many of the alloys to be forged oxidize quickly if heated in air, so heating should not be done outside the forge.

According to the invention, a gripping device for moving the workpiece is associated with a forging press combined with a loading chamber having a pressure lock, and the workpiece is moved into a vacuum chamber and a part forming part of the vacuum chamber. The workpiece is placed in or removed from one or more preheating chambers, heated in the preheating region of the vacuum chamber, and transferred within the vacuum chamber to a forging die where it is forged.

The gripping device serves to move the workpiece from one location to another within the vacuum chamber, so that the workpiece is moved from the loading area to the preheating area and from this to the forging area, and then removed from the press after the forging process for loading. taken back to the room.

Objects, features and advantages of the present invention will become more apparent from the following description of embodiments of the invention with reference to the accompanying drawings.

The illustrated apparatus includes a forging press that includes an upper die 10 and a lower die 12, the lower die being mounted on a base 14 and the upper die being mounted on a plunger 16 that is moved vertically by a hydraulic mechanism 18. There is.

Hydraulic mechanism 18 is mounted on an upright member 20 extending from the base.

The press is housed within a vacuum chamber 22 having side walls 24 and 26, end walls 28 and 30, and a top wall 32.
2 through which the plunger 16 slides.

End wall 28 has a door 34 providing access to the press for die replacement.

The general configuration of such a press is described in US Pat. No. 3,698,291.

The other end wall 30 has an opening, 36, communicating with an elongated vacuum chamber 38 that encloses a portion of the vacuum thread.

The vacuum chamber 38 has end walls 40 and 42, and wall 42 has an access door 44.

This chamber has bottom walls 46 and 48 and side walls 50 and 52.

These side walls have side vacuum chambers 54, 56, 5 as shown.
8,60 is installed.

Vacuum chamber 54 is a loading chamber by which workpieces are moved into and out of the vacuum chamber system.

A vacuum gate 62 (FIG. 3) closes the opening from chamber 54 to chamber 38, thereby allowing the vacuum in chamber 54 to be released without affecting the vacuum in other parts of the vacuum system.

This loading chamber 54 has at its other end a door 64 which provides access to the chamber when the vacuum is released.

A slide 66 in this chamber can be moved laterally on a guide 68 to the center of the elongated vacuum chamber, as shown in dotted lines in FIG.

This slide is configured to remove the workpiece from the loading chamber through the gate 62 when it is opened and move it to a position within the chamber 38 to be transported.

The vacuum chambers 56, 58, 60 are preheating furnaces, and the elongated chamber 38
located on the side wall of the entrance to.

Each preheating chamber has a slide γ0 that can be moved on the guide 12 in the same way as the slide 66.

Each furnace has a heating device, such as a box γ3, having a heating coil 74 located within the wall in such a way as to heat the workpiece when it is supported on the side wall of the furnace.

Although the illustrated configuration has three preheating furnaces, more preheating furnaces may be provided if desired.

Slides 70 form the bottom walls of heating boxes 73, each box 73 having a door 76 that is vertically slidable to completely confine the workpiece within the box during heating operations.

Each sliding door 76 is operated by an air motor 78 mounted above the room.
operated by.

The vacuum gate 62 is a cylinder-piston type air motor 8.
Moved by 0.

Slide 66 is actuated by a similar air motor 82.

All controls for these motors are outside the vacuum chamber.

A guide rail 84 is provided in the chamber 38, and the V
- A carriage 86 is guided on the rail.

Carriage 86 has rollers 88 that rest on rails;
It is actuated by a chain drive 89 via sprockets 90 and 91 at each end of the rail.

This chain drive is driven by an electric motor 92 outside the chamber, the drive shaft of which is connected by a chain 93 to a shaft 94 extending into the chamber and carrying a sprocket 90.

The motor is reversible and can be driven to move the carriage to any position.

The carriage has a workpiece clamp having spaced apart jaws 100 and 102 pivotally mounted thereon for movement toward or away from each other.

These jaws are the piston rod 1 of the air motor 108.
06 and is operated by this.

This motor is operated by argon supplied via hose 110 through the walls of the chamber.

A valve 112 controls the supply of argon to both ends of the cylinder.

The jaw has two pairs of spaced apart workpiece engaging elements 114 and 116.

The pair of jaws 114 is the slide 66 or the slide 70.
When the workpiece W is brought to the grip by any of the above, the workpiece W is configured to engage with the workpiece W.

The other pair of jaws 116 are widely spaced and configured to engage the finished workpiece after the forging process between the dies.

In the forging process, a relatively long cylinder (billet) is sunk into a relatively flat disk, thus requiring two sets of jaws.

The jaws 100 pivot on spaced apart pins 118 on the carriage such that the jaws, by movement of the actuation rond 106, cause the workpiece engaging elements 114 to uniformly engage the ingot together as shown in FIG. Moving.

Opening of the ingot is done by moving the rondo in the opposite direction.

As shown in FIG. 4, rod 106 is connected by ring 120 to rod 122, which is connected directly to ring 104 at its left end.

To accurately position the ingot on the die 12, the carriage is moved laterally to the forward or left position shown in dotted lines in FIG.

To do this, the left end of the rail 84 is supported by the top two links 124 of the chamber 38, which provide some lateral freedom for the rail.

A laterally extending threaded rod 126 on the rail is connected to the rail 84 by a rod and yoke 127.
The rond engages a nut on motor housing 128, not shown.

Operation of this motor moves the left end of the rail, thus moving the carriage and jaw laterally.

The jaw is moved vertically to position the ingot to bring it into position for engagement with the finished workpiece.

For this purpose, the link 124 is attached to a threaded rod 13 forming part of a jack 132 driven by a motor.
Connected to 0.

Actuation of this motor causes the lower end of the rail to rise, thus raising or lowering the position of the jaw engaging elements.

Stopping and starting some motors may be automated.

The present invention provides operator control which allows the position of the ingot and workpiece, as well as the position of the jaws relative thereto, to be viewed through suitable inspection windows provided in the walls of the chamber by means of electrically actuated valves or switches. We are considering manual control of several electrically operated motors.

Such controls are common in machine tool technology and need not be explained in detail.

In operation, the machine is put into operation by closing the heating circuit to the heating coils (not shown in the figure) surrounding the furnace and die in several preheating chambers.

The heating coil can be moved vertically so that it can be removed for lateral viewing of the ingot and workpiece as described in U.S. Pat. No. 3,698,219.

The vacuum pumps for the main chamber 38 and forging chamber 22 are activated to generate the required vacuum.

The vacuum door in chamber 54 is closed at this time and there is no vacuum in the chamber.

The work piece, that is, the ingot W is on the roll 1 on the carriage 66.
34, the door 64 is closed, and the interior of the chamber 54 is evacuated.

A suitable vacuum pump independent of the shoe pump 136 is provided to generate the required vacuum within a short period of time.

Once an equal vacuum is achieved within chambers 38 and 54, door 62
is opened and the carriage 66 is opened and the jaw 1 on the carriage is
00 and 102 into chamber 38.

The jaws are then moved to the position where element 114 is to engage the ingot, and the jaws are moved to the ingot clamping position.

By raising the carriage slightly, the ingot is ejected from the carriage 66 and the carriage is retracted into the chamber 54.

Carriage IO from chamber 56 is then moved to the position shown in FIG. 3, an ingot is placed thereon, and carriage 70 is then returned to the inside of the furnace for heating the ingot.

This process of loading ingots onto slide 66 is repeated, the vacuum in chamber 54 is released, door 64 is opened, and another ingot is moved into main chamber 38.

At this time, the jaws pick up the ingot and move it in the axial direction of the chamber, aligning it with chamber 58 or 60.

Carriages from these chambers receive the ingot and draw it into the furnace within each chamber.

This process is repeated while there is an ingot to be heated in each preheating furnace.

At this time, the ingot in chamber 56 is heated to a required temperature and held at that temperature for a required time to prepare it for forging.

The carriage from this chamber then moves the ingot into chamber 38.

It was picked up by Joe and the carriage 36
1 to a position on the die 12 as shown by the dotted line in FIG.

The ingot is opened and the forging operation begins, with heating coils around the die providing the extra heat needed for forging.

During this time, another ingot may be placed in chamber 54 and transferred to the furnace in chamber 56.

Once this operation and the forging operation are complete, the jaws are again moved forward to grasp the forged article and pull it away from the jaws.

The forged article is returned to its position on the carriage 66 and the forged article is then removed from the chamber 56.

It is pivoted at rollers 142 in a horizontally pivoted position to align with rollers 134 on carriage 66 for removing forged articles from carriage 66 or positioning ingots on carriage 66. There is a platform 140.

When the plurality of preheating chambers all communicate with the vacuum chamber 38, several ingots are heated at once, so that the time elapsed between successive forging steps is minimized.

Thus, the number of preheating chambers must be such that there is no delay due to the time required to heat each ingot.

The structure of the present invention allows continuous positioning of ingots within the preheating chamber and allows continuous positioning of these ingots into the forging press without removing the ingots from the vacuum chamber.

In this manner, a continuous vacuum is maintained from the start of preheating until the completion of forging, and the forged article is withdrawn from the press and placed in loading/unloading chamber 56.

Although the invention has been described in terms of preferred embodiments, it will be apparent to those skilled in the art that various modifications can be made within the scope of the invention.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the forging device. FIG. 2 is a side view of the forging apparatus of FIG. 1. FIG. 3 is a cross-sectional view taken along line 3--3 in FIG. FIG. 4 is a partial vertical cross-sectional view of the carriage for the conveyor for workpiece clamping. DESCRIPTION OF SYMBOLS 10... Upper die, 12... Lower die, 14... Base, 16... Plunger, 18... Hydraulic pressure mechanism, 20 ...Upright member, 22...Vacuum chamber, 24, 26...
...Side wall, 28, 30... End wall, 32...
...Top wall, 34...Door, 36...Opening, 38...Vacuum chamber, 40.42...
End wall, 44...door, 46...top wall,
48... bottom wall, 50, 52... side wall,
54, 56, 58, 60... Vacuum chamber, 62...
...Vacuum gate, 64...Door, 66...
...Slide, 68...Guide, 70...
...Slide, 72...Guide, 73...
... Box, 74 ... Heating coil, 76
...Door, 78,80,82...Air motor, 84...Guide rail, 86...
...Carriage, 88...Roller, 89...
...Chain drive, 90,91... Sprocket, 92... Electric motor, 93...
Chain, 94... Axis, 1 0 0, 1
02...-Jo, 104...Link,
106... Piston rod, 108...
・Air motor, 110... Hose, 112...
...Valve, 114,116...Jaw, 11
8...Pin, 120...Link, 12
2... Rod, 124... Link, 1
26...Rod, 128...Motor housing, 130...Screw rod, 132...
...Motor driven jack.

Claims (1)

[Scope of Claims] 1. An apparatus for performing a forging process on successive workpieces in a vacuum, comprising: an elongated vacuum chamber; a gripping device that is vertically movable into the chamber; a forging press located at one end of the vacuum chamber; at least one preheating chamber on one side of the vacuum chamber in communication with the vacuum chamber; a loading chamber on one side of the vacuum chamber in communication with the vacuum chamber; a closable gate provided between the vacuum chamber and the loading chamber; a slide disposed in each of the preheating chambers and the loading chamber and movable in a straight line at right angles to the gripping device; and a device for creating a vacuum in the loading chamber independent of the vacuum in the vacuum chamber.