US2660076A

US2660076A - Sizing machine

Info

Publication number: US2660076A
Application number: US778845A
Authority: US
Inventors: Milton F May
Original assignee: Individual
Current assignee: Individual
Priority date: 1947-10-09
Filing date: 1947-10-09
Publication date: 1953-11-24
Anticipated expiration: 1970-11-24

Description

M. F. MAY

SIZING MACHINE Nov. 24, 1953 4 Sheets-Sheet 1 Filed Oct. 9, 1947 YmWN INVENTOR. /f Mag.

ATTORNEY Nov. 24, 1953 M. F. MAY 2,660,076

SIZING MACHINE Filed Oct. 9, 1947 4 Sheets-Sheet 2 IN VEN TOR. M1722; 471

ATTORNEY Nov. 24, 1953 M. F. MAY

SIZING MACHINE Filed Oct. 9, 1947 4,Sheets-Sheet 5 BY/V ZZEZAQTOR.

' ATTORNEY M. F. MAY

SIZING MACHINE Nov; 24, 1953 4 Sheets-Sheet 4 Filed Oct. 9, 1947 m m m m I [/fbnf/Va y 14% mz ATTORNEY Patented Nov. 24, 1953 ATENT OFFIE Milton F, May, Saginaw, Mich. a ion Qctohe 9, 1 .47 Serial N- 7 8454? invention. rel tes. o a meo lhe i9? e9- c rate yls zine a d. th 11h and len th oi Qill ss be a, porous nature calla le, i n

One of the prime chiects oi he 1 to d sign a new simpl ractica avsi machine .for sizing hearin s whic ll working parts are concentric to the I D ram and'in which the 1,. Q. Q t Sizing ar perfo med pro er s Quent n Will out r m val of, the work from. he mach ne s that the same center is maintained at all times, making for extreme accurac plq liction,

Another object is to .prcyi e a siz n machin which cupies a limited floor space a d b means of which.maximumproduction is obtained with a minimum of labor and i E the siging" head can be disposed in either a horizontal or vertical position, so that it can be designed to best suit the work, promoting greater ginciencyand economy of operation.

Aiurther object to provide a sizing machine in which all die head moving parts a e h punch section only so that true concentricity is obtained.

Still a furtherobject is to design a siz n Z 1 chine of simple, sturdy, and practica QQILSJH AQ- tion which can :be readily manuiactu ied and assembled, and which can be designed to meet reasonable production requirement. Wi-th the above and other objects in view, the present invention consists in the combination and arrangeinent of parts, hereinafter more fully described, illustrated in the accomnanying e awings, andmore particularly pointed out the appended claims, it being understood that changes may be made in the form, size, proportion, and ninor details of construction, without departing from the spirit, or sacrificing any of the advantages of the invention.

" In the drawings:

g. 1 is a fronteelevational view of m improved sizing machine.

gig/21S an end-.elevationalyiew thereoi, Fig. '3 is an enlarged, fragmentary, '1 i 'l tdinalqsectional view through one of the cylinder h flooding. ee n me hanism, etc. bein omitted, the mechanism being shown osition at-the end of its inward stroke,-

Fig. 4 is a top planfiview thereof Fig. 5 is a view similar to Fi ;3. Showing also the block and loading mechanism, the ra n, etc. being shown at the end .Of its outward st one.

Fig. .6 is an end yiew showing also the trough, the loading member b in shown th end of its downward stroke. 4

2 Fig. '7 is a fragmentary, sectional yiew showing the mechanism retraoted. ,ig. 8 is a perspective detail view of the loading member.

Fig. 9 is an isometric view showing the article trough extension.

Fig. 1() is a View similar to Fig. 6 showing the loading member at the end of its upward stroke.

The sizing machine is preferably hydraulically operated, and comprises a housing Ill having a fiat top section II on which a plurality of'die heads H are mounted, each head being of identical design and construction, so that a description of but one head will suiiice for all.

The housing l6 can be of any desired shape or design, and the heads can be mounted either horizontally as shown or vertically if desired, and

' the hydraulic actuatingmeans and control l2 and I3 respectively areof standard design, and

20 I shall not show or describe them in detail as they iprm nopart of the instant ap lica on whi i directed to the sizing head and loading means only, "Each of the heads I-I comprises a cylinder block .14. hi cks re oun ed in p sed elation; each block having end'caps I5 and I6 respec'tively generally'rectangular in shape, which are sec r d in pos on b means of say" bo ts l1, and openings [8 are provided as usual for securing the head to the table.

it c'entrally disposed opening 19 is provided in the end cap 15 "of the head and slidably accommodates the stem 20 of a hollow ram" bodyZl whi h is dab moun e o re iproca ino ement in the cylinder l4, and a longitudinally 11. D; $53 9 P 1 ha h fid ngagement withthe end wall oi the ram body and 1s inovable with said ram.

eer sh e 2! is s d il t inner an iihod il 2cm I slides the e. sec i i th 5 5 en a es th qui ed a f r mna tms e e e en w s liq l t ei iii Fi -14.

The die holder 23 is internally bored asshown t9 agc g d te tri per an len th nest ng t9. he nte i of the si r sheii dei si a 35 Isa? should li t the shouldered section 3i of the die holder when the mechanism is in retracted position as shown in Fig. 3. The member 29 is moved forwardly by the ram 2| engaging the rear end thereof near the end of its forward stroke and is retracted upon engagement of the shoulders 3t and 3! during the return stroke. Stationary pins 32 extend through suitable openings in the ram body and the ram is slidable with relation thereto, one end of the pins bearing against the hardened insert I while the opposite ends butt against the one end of the length sizing member 251 as usual.

The head 33 of the length adaptor D is rigidly mounted in the shouldered end 35 of the stripper V 29, said adaptor including a stem 36 which closely fits and slides on the I. D. punch 22, the stem 36 projecting into the bore 3? of the O. D. die adaptor 38, which is in turn mounted in the bored shouldered end of the die holder 23 and secured in position by means of setscrew 39.

A stationary guide block *3!) is mounted on the top section I i of the housing Hi at a point closely adjacent to and in longitudinal alignment with the cylinder block H (see Fig. 5 of the drawings), said block having a bored passage M opening into an enlarged bore G2 in which a centrally bored length adaptor 53 is mounted and held by means of a setscrew M, the stem 35 of the adaptor closely fitting the bore 31 of the die adaptor 58 and being slidable therein, the tapered end of the punch '22 i being in horizontal alignment with and projecting into and through the adaptor 43 as the mechanism is actuated and as indicated in Fig. 7 of the drawings.

The loading and ejecting mechanism comprises an angularly disposed loading member Q3 (see 1 Figs. 6, 7, 8 and of the drawings) disposed at substantially right angles to the path of travel of the ram 2 l this is formed with a stem i? the member being actuated by a solenoid (not shown) and is mounted for substantially vertical reciprocatory movement in gibs 58 provided as shown. A shouldered stop (i9 is formed on the loading member it for engagement with an abutment member 59 provided on the table (see Fig. 6 of the drawings), this member serving as a stop and horizontal adjustment for the loading member and further controls the length of stroke.

A shoulder 5! is provided on the one side of the loading member 4% and an upwardly projecting pin 52 is mounted on the upper face of said shoulder.

A vertically disposed stoplate 53 is mounted on the inner face of the shoulder 51 by means of screws 5 and a notched opening 55 is provided in the upper end of said plate and for a purpose to be presently described.

The face 56 of the loading member 46 is longitudinally slotted as at 51 (see Figs. 6, 7 and 10) and a vertically disposed inverted, T-shaped ejector member 58 is mounted to slide longitudinally therein, this ejector being slotted as at 59 and a screw 61) extends through said slot and is threaded into the end of the die holder 23.

Obviously, the member 58 moves up and down with the member 46, but is slidable longitudinally relative thereto when the die holder 23 moves forwardly to the position shown in Fig. 5.

A stop BI is mounted on the end wall of the die holder 23 and serves to limit the downward travel of the bearings as they are fed to the machine.

An inclined trough 62 leads to the loading mechanism of each head, the end of the trough terminating at the stop plate 53, and the bear- 4 ings B are fed to the trough in any desired manner.

A short trough section 63 is mounted on the face of the die adaptor 38 in direct alignment with the trough 62 (see Fig. 9) so that incoming bearings feed from the trough 62 through the section 63 and thence roll against the stop 6| to center the bearing B in the mechanism.

A pin opening 64 is provided in the bottom wall of the trough 62 and as the ejecting mechanism is actuated, the control member 53 moves upwardly to position to permit a bearing B to roll from the trough 62 into the section 83 (see Fig. 10 of the drawings) and thence against the stop 6|, the pin 52 extending through opening 64 and permitting but one bearing at a time being fed into the mechanism.

A plate 65 is mounted on the end of the die holder 23 and an opening 65 is provided adjacent the edge thereof, a longitudinally disposed pin 66 being mounted on the end cap it and is slidab'le in said opening to prevent rotation of the die holder in the cylinder H! as the mechanism is reciprocated.

An ejector spring 61 is secured to the plate 65 in any desired manner, and is turned as at 88 (see Fig. 6 of the drawings) to provide a limited passage between the stop (it and the turned section of the spring 61, and when the sized bearings B are forced upwardly by the upward movement of the member 46 and ejector member 58, it flexes the spring 61 so that the sized stock is snapped out of the machine and into a suitable receptacle (not shown).

An air line 69 spans the opposed heads H and opens into each of the opposed cylinders l4 (see Fig. 1 of the drawings). Air freely flows from one cylinder to the other because when the ram in the one cylinder is on its outward stroke, the air in the space between the ram body and the adjacent cap I5 of the cylinder is forced through line 69 into the opposed cylinder where the ram body is on its inward stroke, and inasmuch as these ram mechanisms are in opposed relation, it will be obvious that the air is forced alternately from one cylinder to the other as the mechanism is actuated.

part of the present invention.

The operation of the head is as follows:

With the ram mechanism etc. in position as shown in Fig. 3 of the drawings, the control member 53 is actuated to permit a single pre-formed bearing or artidle B to roll, by gravity, from trough 62 down against stop Bl, as clearly shown in broken lines in Fig. 6 of the drawings. With the bearing B in proper position in alignment with the bore 31 in the die adaptor 38, the ram 2| is actuated by the collar 10, which is connected to a source of power (not shown). The punch 22 is threaded in the inner face of the ram and as the ram moves outwardly on its work-engaging stroke, the tapered end of the punch '22 passes through bearing B to accurately size the I. D.

movable length sizing member 29 in which the length adaptor Dis mounted, forcing the die adaptor which moves with the die holder over the bearing B to size the O. D. thereof, and the stem 36 of length adaptor D against the one end of bearing B to wedge it between the ends. of the stems 36 and 45 and accurately size it to proper length. Upon the return stroke, the ram body and punch are retracted, withdrawing the punch from the stationary length adaptor, the stripper shoe 2? engaging the shoulder 25 of the die holder 23 to retract same, and the inner shoulder of the die holder engages the shouldered section 3| of the movable length sizing member to retract it as the ram moves back to original position, the bearing B being ejected by upward movement of the ejector member 58.

I wish to direct particular attention to the fact that the bearing B does not move, the punch 22, die holder 23, die adaptor 38, and movable length sizing member 29 moving with relation thereto. The loading mechanism 46 then moves upwardly, forcing the finished article outwardly between the stop BI and the turned section 68 of the spring 61 which snaps the article into a receptacle (not shown), this movement of the loading member admitting anunfinished article simultaneously with the ejection of the sized article.

The member 46 as noted is actuated by a solenoid or other suitable means connected-to the rod 41 and moves, of course, in timed relation relative to the stroke of the ram 2|.

The forward movement of the member 29 (and thereby the adaptor D) upon engagement of the ram 2! with the rear end of the member 29 is and need only be slight to size the length of the bearing. When the ram 2| is retracted, the member 27 in moving rearwardly, engages the shoulder 25 to return the die holder 23 to rearward position and the shoulder 3| on the die holder 23 engages the shoulder 30 to return the member 29 and thereby the member D, rigid therein, to position. Note that the member 58 supports the bearing (Fig. 7) while the inner diameter thereof is being sized by the punch 22, and that the body of punch 22 then supports the bearing while the member 58 moves forwardly with the die holder 23 (Fig. Clearly, the punch 22 will continue to support the bearing during the return stroke until after the member 58 has returned to its original position and will finally be withdrawn from the bearing to permit ejection of the bearing by the ejector 58.

From the foregoing description, it will be obvious that I have perfected a very simple, practical and relatively inexpensive, high-production mechanism for accurately sizing a bearing and parts of a similar nature.

What I claim is:

1. An apparatus for sizing pre-formed articles comprising a cylinder, a hollow ram reciprocatingly mounted therein and having a centrally disposed I. D. punch secured thereto and projecting outwardly therefrom, a bored die holder and die adaptor mounted in said cylinder and actuated by said ram, said die holder and adaptor being reciprocable in said cylinder and having predetermined, limited longitudinal travel with relation to said ram, a movable length sizing member mounted in said hollow die holder and provided with a longitudinally projecting hollow stem through which said I. D. punch extends, a guide block adjacent the one end of the cylinder, a centrally bored, stationary, length adaptor mounted in said guide block and formed with a hollow" stem disposed in longitudinal alignment with and slidably receivable in the bore in the die adaptor, means for supporting a zpreeformed article in horizontal alignment with the hollow stem and the bore in the die adaptor and through which the I. D. punch travels, said punch, die adaptor, and length adaptors successively engaging said article in predetermined sequence to accuratelysizfi theI. 1)., the O. D- and the length of the .article on the work-eng in stroke of said ram.

2. The combination defined in claim 1 in'which the interior of the hollow ram is shouldered and the exterior of the die holder is also shouldered at spaced-apart points to permit the relative longitudinal movement of the ram with relation to the die holder.

3. The combination defined in claim 1 in which a stripper shoe is mounted on the open end of the ram for engaging one shouldered section of the die holder to return it to original, retracted position after it has reached the outward limit of its work-engaging stroke.

4. An apparatus for sizing pro-formed articles comprising a hollow cylinder, a hollow ram reciprocatingly mounted therein and having a contrally disposed I. D. punch secured to and projecting outwardly from the open end thereof, a die holder slidable in said cylinder and formed with a reduced section extending into the open end of said hollow ram, said die holder being formed with a shouldered section engageable by said ram for moving it outwardly in said cylinder at a certain point in the outward work-engaging stroke of said ram, a length sizing member mounted in said die holder and including a length adaptor formed with a hollow stem through which said punch projects, a centrally bored die adaptor mounted in the die holder, a stationary guide block adjacent to and in longitudinal alignment with said cylinder and die adaptor, a stationary length adaptor mounted in said block in alignment with the I. D. punch and through which said punch extends as the apparatus is actuated on its outward work-engaging stroke to successively size the I. D., the O. D. and the length of the pre-formed article in predetermined sequence on the work-engaging stroke of said ram.

5. An apparatus for sizing pre-formed articles having an opening therethrough comprising a cylinder, a hollow ram reciprocatingly mounted therein and including an I. D. punch projecting outwardly therefrom, a hollow die holderreciprocatingly mounted in the cylinder and formed with a shouldered section extending into said hollow ram, a length sizing member mounted in said die holder and provided with a hollow stem, 2. centrally bored die adaptor mounted in the die holder and through which the punch extends, a guide block adjacent the one end of the cylinder, a stationary length adaptor mounted in said block and formed with 'a hollow stem in longitudinal alignment with the I. D. punch and the bore in the die adaptor and through which the punch travels on its work-engaging stroke, said punch, the adaptor, and length adaptors successively engaging said article to size it to predetermined I. D., 0. D. and proper length on the outward work-engaging stroke of said ram.

6. The combination defined in claim 5 in which a hardened insert is provided in the one end wall of said cylinder, longitudinally disposed stationary pins bearing against said insert and extending thrbugh the hollow ram with their Number opposite ends engageable with the length sizing 946,584 member for limiting the return travel of said 1,224,805 length sizing member on the return stroke of 1,354,779 said ram. 5 1,415,459 MILTON F. MAY. 1,493,103 1,619,971 References Cited in the file of this patent 1 722 737 UNITED STATES PATENTS 1,741,033 Number Name Date 10 1944246 King Aug. 3, 1880 8 Name Date Smith 1 Jan. 18, 1910 Stevenson May 1, 1917 Rydbeck Oct. 5, 1920 Limont May 9, 1922 Carlson May 6, 1924 Dean Mar. 8, 1927 Claus July 30, 1929 Neidlinger Dec. 24, 1929 Langhammer Jan. 23, 1934