US965041A

US965041A - Method of forming flanged metal wheels.

Info

Publication number: US965041A
Application number: US56206710A
Authority: US
Inventors: Edwin E Slick
Original assignee: Individual
Current assignee: Individual
Priority date: 1910-05-18
Filing date: 1910-05-18
Publication date: 1910-07-19
Anticipated expiration: 1927-07-19

Description

E. E. SLICK.

METHOD OF FORMING FLANGED METAL WHEELS. APPLICATION FILED NOV.14, 190s. RENEWED mums, 1910.

Patented July 19, 1910.

3 SHEETS-SHEET 1.

E. E. SLICK.

METHOD OF FORMING FLANGE-D METAL WHEELS.

APPLIUATION FILED NOV.14, 190a. RENEWED u! 18, 1910.

965,041., Patented July 19,1910.

WKTNESEEES REVENTQH i l/@0 2, JM4

EDWIN E. SLICK, 0F PITTSBURG,-PENNSYLVANIA.

METHOD OF FORMING FLANGED METAL WHEELS.

Specification 01 Letters l 'atent.

Patented July 19, 1910.

Application filed November 14, 1908, Serial No. 462,608. Renewed May 18, 1910. Serial No. 562,067.

To all whom it may concern:

Be it known that I, EDWIN E. SLIQK, of Pittsburg, Allegheny county, Pennsylvania, have invented a new and useful Method of Forming Flanged Metal Wheels of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of. this spec fication, in which Figure 1 is a lan view of a cast ingot, as made in accor ance with m invention; Fig. 2 is a similar view showing the ingot of Fig. 1 as reduced and framed in the first step of my improved method; Fig. 3 is a plan view'showmg the manner in which the ingot of Figs. 1 and 2 is cut into wheel blanks in the next step in the method forming my invention; Figs. 4 and 5 are sectional views showing reciprocating forgin dies adapted to form the wheel blanks of Tig. 3 into flanged-wheels in accordance with my invention; Figs. 6, 7 and 8' are sectional views showing rocking or rotating dies arranged with the axes of the opposing dies at an angle to each other and ada ted to carry out the forgin operation in orming the wheel blanks 0 Fig. 3 into flanged wheels in accordance with my invention; and Figs. 9, 10 and 11 are sectional views similar to Fig. 4 showing the flow of metal in'suceessive steps of the forging operation.

in forming the blank shown dotted in Fig. 4 into the shape shown in section in Fig. 4, the blank shown dotted in Fig. 4 being the same as the blank shown in full lines in y invention relates to the manufacture of wrought metal wheels, in which a hub is joined by a continuous web to a rim portion, and it particularly relates to wheels formed integral and having hub, web and flan ed trea or rim ortions.

T e object of the invention is to rovide a novel and effective method of orming an improved method of forming wheels in' which the number of o erations is reduced,

the expense ofmaking t 1e wheels is lessened,

and in which the resulting product is cheapened while wheels of an improved quality' are obtained.

The invention consists in an improved method of making flanged wheels of wrought metal, including the casting of the multiple length blank, the severing of the cast blank transversely into single wheel blanks, and the forging operations, by a series of novel steps by which a wheel is produced in which the grain or fiber of the metal is not crossed by any point on the wearing surfacesof the finished wheel, and by which the grain or fiber of the metal extends in the same general direction axially outward at all points in the periphery of the finished wheel.

The invention also consists in forming a Wrought blank with its axially central portion-formed from the axially central portion of the cast blank and then displacing metal intermediate of the hub and edge of the blank into the flange of the wheel.

The invention also consists in making forged metal wheels havin a flange portion formed of metal disp aced from the body of the blank between the axial center and the periphery or marginal edge of the blank and having a tread portion whose outer side or edge portion is formed of metal displaced from 'the periphery or marginal edge of the blank or ingot.

The invention further consists in severing a cast ingot transversely into wheel blanks and forging the severed blanks into wheels having their wearing. surfaces or periphery formed from the cut surface of the severed blank.

The invention still further consists in the method of forming wrought. metal wheels in which the blanks are forged into wheels and surplus metal in the blank is displaced by the forging operation and is H its axial center and changing its cast granular structure into a fibrous structure. The blank3 is then severed transversely by shearing, sawing, or in any other desired manner, into cylindrical cheese shaped Wheel blanks 4 of the desired weight and thickness. Preferably the cut blank i. at least as thick as the thickness through the hub of the finished wheel. The cut wheel blanks are re heated, and are then forged into finished wheels by means of suitable forming dies, either reciprocating dies, rotary dies, or rocking dies having their axes at an angle to each other being employed to carry out the forming operations. V

In carrying out the forging operation by means of reciprocating dies, such as are shown in Figs. 4 and 5. the cut blank is placed between the dies 5 and (i of Fig. 4 in the position shown by dotted lines therein. The movable die is then reciprocated to press or force the blank into the shape shown by 7 in Fig. 4. The partly formed blank? is then preferably removed, to a second set of reciprocating forging dies 8 and 9 having die cavities as shown in Fig. 5, and the blank 7 is then further forged, to complete the wheel 10. In Fig. 9 the blank shown in full lines is pressed into the form shown in dotted lines in the first stage of the forging operation and on continuing the forging operation in these dies the shape is further changed from that shown dotted in Fig. 9 into that shown dotted in Fig. 10; by continuing the movement of the dies toward each other the shape shown dotted in Fig. 10 is finally formed into that shown in dotted lines in Fig. 11, which is the same shape as that shown in section in Fig. 4.

It-Will be noted that in the forging operation in the first set. of

dies

5 and 6, the blank is dished so as to cause what was the peripheral surface of the severed blank to form the outer surface of the tread of'the wheel, and that in the succeeding forging operation between the dies 8- and 9, the flange and the wearing surface of the tread is formed from metal which is displaced from its original location in the sheared or cut surface of the blank at a point between the peripheral edge and the axial center of the blank.

In carrying out the operations of forging the blanks by means of rotary or rocking dies having their axes at an angle to each other, as shown in Figs. 6, 7 and 8, the blank 7 is first reduced in thickness and is dished between rocking

dies

11 and 12 having a contour preferably as shown therein, the cut blank being shown in dotted lines and the blank as dished in these dies being shown in section. The partly formed'blank 7 is then preferably removed to a second set of dies 13 and .14., in which the blank is further reduced and the forging operation is finished, the beginning of the second forging operation being. shown in Fig. 7, and the completion of this forging operation being shown in Fig. 8, the dies in Figs. 7 and 8 being of similar shape. In the first set of

dies

11 and 12 the blank 7 1s dished into approximately the shape shown, and in the next forging step the flange and tread are formed of displaced metal originally located between the periphery and axial center of the cut blank. The wearing surface of the flange and tread is in this way formed from metal originally in the cut surface of the severed blank, the peripheral surface of the severed blank being displaced so as to form the outer edge of the tread of the finished wheel. This is of great advantage, as the peripheral surface is liable to have surface defects which are in this way removed from the wearing surfaces of the wheel.

In forming the cut blanks from the ingot. the blanks may vary slightly in thickness and weight, and should a slight amount of excess metal be present in the blank. by arranging the dies in the peculiar manner shown in the drawings, any such excess metal in the blanks will be rolled outwardly and will form a fin on the peripheral edge portion of the flange of the wheel. the sides of the fin being parallel to or being at an angle other than a right angle to the axis of the blank. By these ineans I am enabled to finish wheels to a certain thickness and weight from blanks having a varying weight or thickness, the thin fin formed by reason of such excess weight being formed in such position on the wheel that 1t does not retard the rolling operation and prevent the dies being brought into their closed position.

While I have shown two sets of reciprocatin' dies and two sets of rotary or rocking dies iavingtheir axes at an angle to each other for forming the wheel by forging, but one set of dies may be employed to perform the forging operation, in such case the dies having die cavities similar to those shown in Figs. 5 or 8.

The advantages of my invention will be appreciated by those skilled in the art. By my peculiar method of forming the in ot, severing the ingot into blanks, and hen forging the wheels by the steps as described, I am enabled to produce rolled flanged wheels having a fibrous structure which does not cross at any point the periphery of the finished wheel, and in which the grain or fiber in the finished wheel bears the same relation to'its axis at all points around the axis. This is of particular value as it .insures the tread portion of the wheels wearing regularly, and very largely )revents the formation of false flanges and at spots on such wheels.

- The peculiar series of steps of manipulating the blank enables the forming of wheels having integral flange and tread portions in which the-wearing surfaces of the flange and tread areformed from metalin the sheared or cut surface of the severed blanks, and d1splaces the metal in the periphery of the cut e tread portion lanks to theputer edge of t of the wheel, and the number of steps neces sary to form the wheels is reduced, the cost of such Wheels being lessened thereby,

While in Figs. 4 and 5, I show the hub of the wheels solid, and Figs, 6, '7 and 8, the hub of the wheel punched, the wheels may be punched either at the be inning of-the forging operation or after the forgin 0 eration has been completed, or the b an 8 may be unched during an intermediate stage of t e for ing operation, or simultaneously therewith, as is desired.

Changes in the arrangement and in the construction of the dies may be made with-- out departing from my invention. The ingot may be formed with a cylindrical or polygonal cross-section, forming approxi-' mately a circular shape, and may be of any desired length The manner in which the cast ingot is vreel-need in cross-sectional area and is severed into blanks, and the thickness of the blanks, may be varied, the .n'u'mher of forging steps in forming the wheels may be changed, and other modifications may be made within the scope of the claims.

I claim l. The method or Iormin wheels, con sisting in taking an ingot, r ucin .its cross sectional area, severin transverse y there from a blank having its axisextending in the same direction relative to the metal of the blank that the axis efthe in ct extended relative to the same metal, t en forcing therefrom a metal intermediate the periphery and axial centeroutwardlyinto therim portion of the wheel.

2. Themethod of forming wheels, consisting in takin an ingot, severing transversely lank havin its axis extendin in the same direction re .ative to the meta of the blank that the axis of the ingot extended relative to the'same metal then forcin metal intermediate the eriphery and axial center outwardly into tie rim portion of the wheel. 7

3. The method of forming wheels, consisting in'taking an ingot, reducing its cross sectional area, severing transversely there from a blank having its axis extendin in the same direction relative to the meta of the. blank that the axis of the ingot e2rtend-v ed relative to the same metal, then forcing Vmetal intermediate the periphery and axial EDWIN E. SLlGK.

Witnesses R. D. LITTLE, H. M. Conwm.