US3508429A - Frame for large press - Google Patents

Description

April 28, 1970 c. STAPLES 3,508,429

- FRAME Foa LARGE PRESS Filed May 13, 1968 FIG. 1A N Figa I B lo fao f Maw United States Patent 3,508,429 FRAME FOR LARGE PRESS Charles F. Staples, 4456 Samoset Ave., Royal Oak, Mich. 48072 Filed May 13, 1968, Ser. No. 736,904 Int. Cl. B21j 13/04 U.S. Cl. 72-455 2 Claims lABSTRACT OF THE DISCLOSURE This invention relates to forging presses of unlimited size and unlimited capacity and more particularly in an improved frame for such forging presses in which the forging pressure is retained by multiple strands of wire being assembled and retained under tension, in combination with steel reinforced concrete. Said concrete being cast in a permanent retaining structure of rolled steel plate. The use of large aluminum forgings is to eliminate assembly of bits and pieces to save man hours. Also to produce a stronger component of less weight. These large forgings allow a large latitude in part configuration and the material can be placed where it will be needed and will serve to the best advantage.

Various forging presses have 'been designed and built heretofore, to produce large forgings for the Air Force and for Aerospace requirements; however, the size of forgings that can be produced today is limited to the 50,000 ton presses now available.

In the general arrangement of a large hydraulic press today for instance, the crown containing the main hydraulic cylinders is at the top of the press and is supported by several tie rods in a vertical position. The slide rides up and down and is guided on these tie rods. The bed is stationary and forms the foundation of the press. One weakness of this type press is the tendency of the crown to move or vibrate sidewise when under load during the forging operation. The tie rods sustain the weight of the crown. The tie rods used in a conventional press require large expensive forgings and long expensive man hours to machine; also, there are very few machines having the capacity to machine these large tie rods.

The object of this invention is to provide a press frame of rigid construction comprising a steel frame and concrete in combination with multiple strands of wire tendons. The strands f wire tendons assembled under tension around the frame.

Another object is to provide a press frame that is adaptable to horizontal use or to vertical use.

It is another object of this invention to provide a huge closed die forging press of optimum tonnage in the range of 200,000 tons for anticipated future aircraft and aerospace requirements for large aluminum, titanium, steel, and superalloy forgings.

It is another object of this invention to provide a frame for forging presses in which the pressure of forging is retained by a plurality of convolutions of wire tendons assembled under tension.

Another object is to provide a frame for a machine in ice which the strain bearing members are under tension at all times.

Further objects, features, and advantages of this invention will become apparent from a consideration of the following description, the appended claims, and the accompanying drawing in which:

FIGURE 1 is a top plan view of the frame when in a horizontal position.

FIGURE 2 is a side elevation view of FIG. l, shown in partial section as on line B-B.

FIGURE 3 is an end elevation view of FIG. 1, shown in section as on line A-A.

Referring now to the drawing wherein like numerals refer to like parts throughout the various views: A cover 10 is made up of smaller pieces welded together to form one large plate; base 11 being made up in the general configuration as used in cover 10; up standing side wall 12 is contoured and forms an outside retainer for concrete mix 18, and this side Wall 12 also is a spacer for maintaining cover 10, and base 11 in parallel relation to each other.

A container 22 into which the press operating mechanism is assembled is formed by up standing side walls 13, 14, 15, 16, and these side walls form an inside container for concrete mix 18.

The outside retainer Wall 12 and the inside container walls 13, 14, 15, and 16 may -be spaced apart by concrete reinforcing bars, said bars may be welded to the inside faces of said container walls.

Cover 10 and base 11 are secured to side walls 14 and 15 by bolts 19.

After concrete mix 18 is poured into place, cover 10 is secured by vbolts 19. Additional concrete may then be added thru apertures 21.

A heavy coating of hydraulic cement 23 completely surrounds the concrete mix 18. Hydraulic cement adheres strongly to metals and to regular concrete, forming a bond to metal side walls and concrete mix 18; thus preventing concrete dust that may otherwise have a tendency to arise.

Tendons 17- shown in enlarged scale, are wrapped around wall 12 and secured in place under controlled tension. The ends of -the tendons may be butt welded together or otherwise secured. These tendons counteract the pressure exerted during the forging operation. They may be square, round, flat or other shaped.

The overhanging sections of cover 10 and base 11 are secured by studs and nuts 20.

This frame may also be used for other machines, such as heavy duty presses in the manufacture of man made diamonds, etc.

It will be understood that the specific construction of the improved forging press frame which are herein disclosed and described is not intended to indicate limits of the invention, the scope of which is defined by the following claims.

What is claimed is:

1. A frame for containing an operating mechanism for operating the slide of a forging press, and for containing forging dies of various size and shape, said frame for counter balancing forging pressure, comprising a container having end walls in opposed vertical parallel position for counter balancing forging forces said container having vertical parallel side Walls said end walls and said side walls forming an inner frame for poured concrete an outer frame completely surrounding said inner frame arranged with open places between said inner fra-me and said outer frame and spaced apart from said inner frame the space between said inner wall and said outer wall containing concrete a base plate and a cover' plate for retaining said concrete v Wire tendons wrapped around said outer wall said wire tendons being secured under tension.

2. In a frame for containing the operating mechanism of a machine comprising an inner containing wall an outer containing wall spaced around said inner containing wall poured concrete filling the space between said inner containing wall and said outer containing Wall a plurality of tendons wrapped about the outer surface of said outer containing wall said tendons being stressed and secured while under stress to form a load carrying means a base member and a cover member means for retaining the said poured concrete '4 References Cited UNITED STATES PATENTS FOREIGN PATENTS 10/1952 France.

CHARLES W. LANHAM, Primary Examiner GENE P. CROSBY, Assistant Examiner U.S. Cl. X.R

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