US1821457A

US1821457A - Metal flanging or cutting and flanging machine

Info

Publication number: US1821457A
Application number: US369416A
Authority: US
Inventors: Ned T Willis
Original assignee: Individual
Current assignee: Individual
Priority date: 1929-06-08
Filing date: 1929-06-08
Publication date: 1931-09-01
Anticipated expiration: 1948-09-01

Description

Sept. 1, 1931. N. "r. WILLIS ,821, 5

mam. FLANGING 0R cunme AND mmeme ncruus Filed Jun a, .1929 2' Sheets-Sheet 1 INVENTOR.

ATTORNEY. ,1

p 1, 1931- N; T. wu |s 1,821,457

METAL FLANGING 0R CUTTING AND FLANGING MACHINE Filed June 8. 1929 2 Sheet s-Shee t 2 JTecZ T W'Zls,

ATTORNEY.

I N VEN TOR.

Patented Sept. 1, 1931 TEE NEID T. \VILLIS, 01 FEW YORK, N.

METAL FLANGING': R G'U'TTING AND FLANGING Application filed June 8, 1923. Serial No..369,4'16.

ti -curved edges of irregular contour, such, for

example, as one of the sides of a multi-sided lantern, it is desirable to flange the curved edge either for the purpose of giving a nice finish only to the edge or to also give the sheet the appearance of being thicker than it is, sothat a thin sheet metal plate may have theappearance of being a thick metal casting. It is difficult, however, and in many cases impossible, to produce such plates by F stamping, or to flange the-edges of the plates by the roller machinesand bending-or breaking machines in common use without transverse fracture of the hanging, and :it is en'- tirely impossible toforni smooth and prac- 'tically unbroken flanges by the methods and means in general use where the edge to be flanged is intricately curved.-

One object of the present invention is :to

provide a machine whereby inost intricately curved edges of a sheet metal plate maybe easily, conveniently and quickly flanged and flanges of perfect form produced.

Another object of the invention is toprovide a machine for simultaneously cutting aura-ed margins upon or openings in sheet metal plates and simultaneously hanging the edges along the lines ofcut;

The invention consists of :thefea tin'es of construction, combination and arrangement of parts, hereinafter fully described and claimed, reference heing had to the accompanying drawings, in which F 1 is a side elevation of a machine with tool designed for hammer-Hanging sheet metal plates.

2 is a front elevation of the machine.

a View of the movable die membcrand anvil'or stationary die .member, the latter appearing in section, illustrating the hanging action.

Fig. with edge margin as flanged by the machine.

Fig. 5 is a sectional view-thereof.

Fig. -6 is a view similar to Fig. 13 and showi is a plan view of a sheet metal'plate ing the dies constructed 'fora combined outting and flanging operation.

Referring to the drawings, 1 designates the supporting base of the machine, on which is mounted a "U-shaped body 2 comprising upper and lower parallel arms 3 and 4t connected at their rear ends by .a' union 5, said :arms being spaced at their. forward ends to provide a worlethroat above the base for the reception :and movement of a sheet metalplate to :be acted upon and for the movement of the movable die member.

The base 1 supports an anvil body 6 having an opening 7 extending from side to side thereof and through its top :to receive a removable anvil die or stationary die member -8. Thisdie member 8 is provided witha forward surf-ace =9 and a rear surface 10 arranged at different horizontal levels. The surface 9 intersects a surface 11 on the anvil body 6, so as to form therewith a table to support the part of the sheet metal plate which is to 'be flanged. This table is arranged below the level "of the surface '10 of the die member, the "forward edge of which provides a straight vertical gaging or abutment surface or shoulder 12. The

rear edge of the surface {9 terminates just in advance of the gaging abutment 12, so as to providelan intervening hanging I groove or recess, the inner wall-of which is formed by the shoulder 12 and the outer wall of which is formed by surface 13, providing a curved, "beveled, or inclinedfianging shoulder between the groove andsur face ,9.

Mounted on the arm '3 is a reciprooatory needle bar 14 carrying a chuck 15 to receive the hammer tool or movable "die member 16, which die member is of narrow width and movable downwardly into the flanging V groove "and provided with a hanging shoulder 1? for cooperation with the Hanging shoulder of the stationary or anvil die member.

The machine is employed for fianging the curved edges of ornamental sheet metal plates, such, for example, "as that shown "in Fig. 4 The plate 1'8here 'shownis designed for one of the sides of a mu'lti-sided lantern casing, and is provided with an opening 19 of a desired geometrical shape, the marginal edge walls of which are bent inwardly to form a flange20 ofa type produced by the flanging dies of the machine. Assuming that the metal removed to form the opening 19 has first been cut out in any suitable manner, the plate 18 is brought to rest with one of its port-ions upon the table 11 and its raw edge portion which is to be flanged abutting against the gaging edge 12 of the die surface 10. lVith the plate in such position the movable die member 16 is set inte action so as to cause its acting surface 17 to engage and bend or flange the edge of the 'metal downward into the flange and groove and against the shoulder 13 of the anvil die. In the operation of the machine, the narrow movable die member reciprocates several hundred times per minute, and gives a corresponding number of short, sharp, hammer blows upon the edge of the metal and acts upon a small portion or area of the metal at a time, the plate 18 being shifted, similar to the manipulation of the work being operated upon a scroll saw machine, so as to bringsuccessive edge portions of the plate into registration with the acting'die surfaces, so that within a definite period of time the entire marginal edge portions of the plate will be flanged. By this method of operation the edges of a plate of whatever geometrical form, and no matter how intricately or compoundly curved, may be flanged in a smooth and accurate manner and without breaking through the metal of the plate at any point. \Vhen plates so formed are assembled to form a lantern casing or other similar object, the flanged edges of the plate give a highly ornamental and pleasing appearance and at the same time they also give the effect of thickness to the plate, so that the plate will appear like a cast plate, and of much greater thickness than it really is.

By the use of a removable anvil die mem ber 8 and plunger or hammer die member 16, said die members may be made interchangeable with other die members having acting surfaces of different sizes and shapes, so that the dies in use may be adapted to act upon all kinds of plates, of various degrees of thickness, and with edges varying to great degrees in shape or curvature.

The movable die member may, in practice, be operated in any suitable manner. In the present instance I have shown an electric motor 21 mounted upon the frame arm 3 and the shaft of which is connected by an eccentric 22 with the reciprocating die bar 14, whereby the plunger die may be reciprocated to make a very large number of working strokes per minute of time, as will be readily understood.

In Fig. 6 I have shown a modified form of the invention in which the dies are constructed to cut out metal from a plate so as to produce an opening 19 and to simultaneously form the flange 20 upon the margin of the opening at each point of out. In this construction the anvil die 8 is provided with supporting or

table surfaces

23 and 24 at different horizontal levels to respectively form supports for the portion of the metal which provides the complete plate body 18 and the portion 19 of the metal which is cut away to produce the opening 19. The said die member is also provided at the angle of intersection of said

portions

23 and 24 with a beveled or inclined flanging shoulder 25 and straight vertical gaging shoulder 25 and a groove slot or recess 26 opening through the top of the anvil die between said shoulders. The plunger die 16 in this construction is provided with a flanging shoulder 17 and with an extension 27 terminating in a cutting edge 28. In the operation of this form of the machine, the plate blank is rested upon the surface 23 with the part l9 overlying the surface 24 and the pattern line indicating where the cut is to be made overlying the slot or recess 26. On the downward movement of the plunger die 16 the edge 28 coacting with shoulder 25 which acts as a stationary knife, will cut through the metal and the extension 27 will enter the slot or recess 26 and guide the plunger die while its flanging shoulder 17 is flanging the cut edge of the plate body 18 against the flanging shoulder 25. lVith this construction of device sheet metal plates of any outline shape and designed to be made with openings or exterior margins of any curved shape may be easily and quickly cut out on the machine and the edges thereof flanged. It will, of course, be understood that in the cutting and Hanging operations the plate blank will be shifted by the operator in accordance with a drawn pattern to successively bring the proper parts of the plate into registration with the dies, and that, if desired, any suitable type of gage may be employed to assist the operator in this work.

Having thus fully described my invention, I claim 1. A machine for flanging the edges of sheet metal plates embodying a stationary die member having surfaces at two different levels, a groove between said surfaces, a flanging shoulder on one of said surfaces at one side of the groove and a gaging shoulder on the other of said surfaces at the opposite side of the groove, and a reciprocatory die member for delivering hammer blows upon the edge of the metal and to force it down into the groove and against said flanging shoulder.

.2. A machine for flanging the edges of sheet metal plates comprising a stationary die member having surfaces at two dilferent levels, agroove between said surfaces, a flanging shoulder on one of said surfaces at one side of the groove and a gaging shoulder on the other of said surfaces at the opposite side of the groove, and a coacting reciprocatory die member having a fianging shoulder for engaging the edge of the metal and forcing it down into the groove and against the first-named flanging shoulder.

3. A machine for fianging the edges of metal plates comprising a stationary die member having a fianging groove, a flanging shoulder at one side of the groove, and a gaging shoulder at the opposite side of the groove, and a reciprocatory die member movable in said groove to bend the edge of the metal against said flanging shoulder.

4:. A machine for flanging the edges of sheet metal plates embodying a stationary die member having an anvil, a removable stationary die member carried by the anvil and having a flanging groove,-a flanging shoulder at one side of said groove, a gaging shoulder at the opposite side of the groove, a reciprocatory anvil bar, and a plunger die member carried by the anvil bar and having a coacting flanging shoulder.

5. A machine for simultaneously forming curved edges upon sheet metal plates and Hanging said edges, comprising a stationary die member having a flanging groove, a fianging shoulder at one side of said groove, and a gaging shoulder at the other side of the groove, and a reciprocatory die member having a cutting knife and a flanging shoulder to successively cut through the metal and force the edge of the metal so produced into the groove against the anvil die flanging shoulder.

6. A machine for fianging the edges of sheet metal plates comprising an anvil die member having surfaces disposed at different levels, a recess between said surfaces, a straight vertical shoulder on one of said surfaces at one side of the recess, and a beveled shoulder sloping from the other surface downwardly toward the recess at the opposite side of the latter, and a reciprocatory movable die member movable downwardly into said recess and having a flanging shoulder to force the edge of a metal plate against said beveled shoulder of the anvil die member. a

7. A machine for fianging the edges of sheet metal plates comprising an anvil die member having surfaces disposed at different levels, a recess between said surfaces, a straight vertical shoulder on one of said surfaces at one side of the recess, and a beveled shoulder sloping from the other surface downwardly toward the recess at the opposite side of the latter, and a reciprocatory movable die member movable downwardly