US1334335A

US1334335A - Apparatus for treating metal objects

Info

Publication number: US1334335A
Application number: US109172A
Authority: US
Inventors: Henry E Warren; William M Wheildon
Original assignee: LOMBARD GOVERNOR Co
Current assignee: LOMBARD GOVERNOR Co
Priority date: 1916-07-13
Filing date: 1916-07-13
Publication date: 1920-03-23
Anticipated expiration: 1937-03-23

Description

H. E. WARREN AND W. Nl. WHEILDON.

APPARATUS FOR TREATING METAL OBJECTS.

APPLICAHN FILED JULY l3|l91 6.

Patented Mar. 23, 1920.

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APPARATUS FUR THEATING METAL OBJECTS. APPLlcAHoN FILED 1uLY13,1'916.

1,334,335. Patented Mar. 23, 1920.

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APPARATUS FOR TREATING METAL OBJECTS.

APPLICATION FILED JULY 13,1916. 1,334,335. Patented MaI-.23,1920.

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T. Ma' M /f 9^ /66 www vH. E. WARREN AND W. M. WHEELDON.. APPARATUS FOR THEATING METAL OBJECTS.

APPLICATION FILED JULY 13,1916. Y

Patented Mar., 23, 1926 H. E. WARREN AND W. M. WHETLDON.

APPARATUS FOR TREATING METAL OBJECTS.

APPLICATION HLED JULY 13,1916. T. Patentedmm. 23, 1920.

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TT T T M@ fr "40 1 Inveaoi' ifa/uu? 5. Wwe/wav i or more tools which cut the blank trans- Unitarian sTAtrEsri-irENT OFFICE.

HENRY E. WARREN AND WILLIAM M. WHEILDON, OF ASHLAND, MASSACHUSETTS, ASSIGNORS TO THE LOMBARD GOVERNOR COMPANY, 0F ASHLAND, MASSACHU- SETTS, .A CORPORATION.

APPARATUS FOR TREATING METAL OBJECTS.

To all whom it may concern:

Be it known that we, HENRrE. WARREN United States, in the county Massachusetts, have invented an Improve.-

ment in Apparatus for Treating lMetal Qbof which the following description, Flgv. 11. Y 1g.16 ade'tail in section and elevation jects,

Specication of Letters Patent. I

in connection with the accompanying draw-` ings, is a specification, like characters on the drawings representing like parts.

j This invention relates to apparatus for' providing objects wlth acylindrical body portion and with a conical or curvedjendrl` portion or nose, and more particularly for shaping metal objects, ings.'

In accordance with the present-invention, apparatus is provided withy which the shell blank or forging is irst acted uponby a tool which'is moved with relation to the Work to form a conical or curved noseor end portion, and thereafter the work is moved with relation to the nose-forming tooland preferably to other tools to form a cylindrical body portion. The shell blank or Jforging may also haveits body portion acted upon by one versely or radially and determine the length of the shell.

'These and other features of this invention will be pointed out in the claims at the end of this specification.

Figure 1 is a plan view of a machine lem bodyingthis invention.

Fig. 2, a side elevation of the machine shown in Fig. 1.

Fig. 3, an elevation of the opposite side of the machine.

Fig. 4, a detail to be referred to.

Fig. 5, a front end elevation of the machine.

Fig. (i, a detail in elevation and section, showing the tool carrier in position to cut the body portion of the shell blank.

Fig. 7, a section and elevation to illustrate the cutting-ofi' tools.

Fig. 8, a rear end elevation of the ma Chine.

Fig. 9, an enlarged plan showing the noseL forming tool in its starting position.

Fig. 10, an enlarged detail to illustrate the method oi-moving the nose-forming tool. i

such as shell forg- `spindle'. andits operating parts.

iaaairgll.

the spindle cylinder.

Patented Mar. 23, 1920.

application ma' 'July is, 191e. seriaihno. 109,172.

fand enlarged details of the .5 of the cutting oli' tools and vcylinders.

Fig. 17, asection of the exhaust valve for Fig. 18, a detail-of the automatic lifting device for the nose tool carrier. y

Fig. 19, a'detail of the cutting-ofi:l cylinder, and

Fig. 20, a detail of the hydraulic clutch.

The work to be treated is herein shown as a shell forging or blank `a (see Fig. 9) which has the general shape of the finished shell and is mounted on a spindle or arbor, which has provision for firmly gripping the blank and which is mounted to rotate and to move axially.

In the resent instance the spindle (see Fig. 11),- 1s composed ofa rear member 1() and a front member 12, which is detachably secured to the rear member as by screws 13 or otherwise.

The front member 12 of the spindle is made of the proper diameter to have the blank a slipped upon it, and the said blank is firmly vsecured thereon by suitable means, herein shown as gripping jaws c, which .are movable in radial openings in the member 12, by means of cam surfaces or cones 15 on a rod 16, which is located in the spindle and is extended through the rear head 17 of the hollow spindle member 10, and through a diaphragm 18 to which it is fastened as by the nut 19 (see Fig. 12). The rod 16 is moved in the direction of the arrow 20, Figs. 11 and 12, by fluid pressure admitted into the chamber 21 behind the diaphragm 18, and when so moved, the cones or cams 15 move the gripping jaws c outwardly, and cause their `teeth 22 to bite into the inner surface of the blank a. and thus lirmly secure the said blank on the front member 12 of the spindle. The jaws c are held against the cones 15 by springs 23 acting on keys or lugs 24, Fig. 1l, which extend into slots or ways in the spindle member 12, and serve on the '145-15.

to guide the jaws in their movement. The springs 23 are located in suitable recesses or slots 25 in the circumference of the spindle member l2.

The jaw-actuating rod 16 is moved in the directionopposite to that indicated by the arrow 20 by a spring 27, located in the present instance in the rear member 10 of the spindle, and when so moved, the cones or cams 15 are moved so as to release the gripping jaws and permit the springs 2,3 to disengage the jaws from the blank and render the latter loose on the spindle and capable of lbeing removed therefrom.

The chamber 21 is formed by the diaphragm 18 and a casing 28, which latter 1s secured to one end of a tube 29, (see Fig. 12) fastened at its other end to the head 17 of the spindle I'nember 10.

The head 17 constitutes a' piston, which is detachably secured as by screws 290 to the rear end of the spindle member 10, and said piston is made of larger diameter than said member 10 to form a differential piston within the cylinder 30 into which the spindle member 10 is extended. The c linder 30 (see Fig. 11) is provided with a nt portion 31 of the external diameter of the spindle member 10, and with a rear portion of the external diameter of so as to form an annular chamber 32 in .front of the piston, which chamber is provided with a fluid inlet 33 (see Fig. 15) for the admission of fluid pressure em:- ployed to return the piston and spindle as will be described, and the cylinder is further provided in its rear head 34, with a fluid inlet 35 for the admission of fluid` pressure behind the piston 17, so as to move the latter and the spindle forward, as will be described. y

The cylinder 30 is also provided near its4 rear end with a Huid outlet port 36, which communicates with a port or passage 37 in the cylinder head 34 and with which latter' is connected .an exhaust or outlet pipe 38.

The outlet port 36 is arranged away from the head 34 of the cylinder 30, so as to leave a film or cushion of fluid behind the piston. 17, which prevents contact of the latter with the cylinder head. The cylinder 30 is supported by the frame 40 of the machine, and forms a bearing for the rear end of the spindle member 10, whose front end rotates in a bearing 41 supported by the frame 40 of the machine. The bearings 30, 41, are spacedapart, and the spindle member 10 has fast on it between sald bearings, a gear 42, which meshes with and is rotated by a long pinion 43 on a shaft 44, supported in

bearings

45, 46, secured to or forming part of the frame 40.

It will be seen that the spindle is capable of being rotated and also of being moved axially, and provision is made as will be the piston Y 17,V

. bar 55 to move in a described, for rotating the spindle without axial movement, and for rotating it while it is being moved axially.

To facilitate description and to enable the operation of the machine to be readily understood, the rota-ry movement of the spindle may be disregarded and the spindle assumed to have a stationary position under one condition and to be movable axially under another condition.

In accordance with this invention, it is designed to form thc conical curved nose 47 of the finished shell (sce Fig. 1) 4while the spindle is in its stationary condition, by movement of a suitable tool with relation to the work and spindle, and when the conical nose has been formed or finished, to form the cylindrical body'portion 48 of the shell, by movement ofthe spindle axially with relation to the nose-form` tool an"d preferably to additional tools which may be designated body portion tools.

Referringto lFlg. 9, 50 represents a turning tool of usual or known construction, which is adjustably securedA in a holder 51 secured to' Aa carrier 52, movable about a center so as to cause the tool 50 to move .in the arc of a circle andthereby impart a 'curvedor conical shapeto the front end or nose of the blank a. 'f

' The tool carrier 52 is preferably made as herein shown, and consists 'bf a radius arm, which' is i'voted to move in a substantially verticalp ane and also in a horizontal plane. Theradius arm 52 hasone end mounted on a horizontal 'pivot 53 (see Fig. 6), which is carried by a vertical e on' one side of the to extend `across the machme and be connected with a bar 55, which ismounted to the spindle from the pivot 54. v

he radius arm 52 is vertically pivoted to permit 1t to be turnedup, so as to leave pivot 54 mounted on the frameof the machin path ofmovementof the spindle, andthe sald radlus armis made of sufficient length' the spmdle clear'for puttmg on and taking provided with an upwardly curved intermediate portion 56 (see Fig. 6), which affords clearance for the work on the spindle, when the radius arm r is in its horizontal or operative position shown in Figs. l, 2, 6 and 9.

The radius arm 52 may be connected with the sliding bar 55 by means of a block 58 (see Figs. 3, 9 and 10) pivoted to the horizontal plane, and Aadapted to be straddled by lugs or ears 59 on the free end of the radius arm.

The nose-forming tool 50 may be moved to cut or turn oif the work from the front by a stationary lug or sto /lil end of the blank a toward the body portion therebf, by iiuid pressure admitted into a cylinder 60 (see F1gs. 1, 2 and 9*) supported by the framework, said cylinder having its plunger or piston 61 attac ied to or forming part of the sliding bar 55.

Provision is made for arresting the movement of the nose-forming tool 50, when the latter reaches a position where the curvature of the nose, merges with the cylindrical body portion of the blank, and when the nose-forminr tool 50 reaches this position, the said tool5 is available for use in turning ofi or shaping the body portion of the blank .Y to impart to the external surface of the latter a true cylindrical form.or shape.v

In the present instance the forward movement of the nosefornung tool 1s arrested work of the machine (see which is engaged by the sliding bar 55.

The blanks a, are made longer than it is desired the iinished shells should be, and provision is made for cutting the blank radially or transversely, so as to remove the surplus rear ortion of the blank and leave the finished siiell of the desired length, and at the same timeprovide it with a substantially smooth rear end. For this purpose, preferably two

cutters

64, 65, are employed (see Figs. 9 and 16), which are located on opposite sides of the path of movement of the spindle, and are moved toward and from the spindle by fluid pressure admitted into the

cylinders

66, 67 supported by the framework of the machine and provided with

differential pistons

68, 69, to the front ends of which the cutters or tools 6i, 65, are detach-` ably secured b v bolts 70, and clamping plates or bars 71 or otherwise. i v

The

cylinders

66, 67, are radially disposed with relation to the spindle and have their front ends open, and are provided with slots 7:2, which extend longitudinally from the open front endsl for the passage of the

cut ting tools

64, 65. The

cylinders

66, 67, are of' like construction, and each is provided with a front portion of the external diameter of' the front portion of its piston, and with an enlarged rear portion of the external diameter of the enlarged rear end or head ofthe piston, so as to form an annular chamber 73 of materially smaller area than that of the cylinder in front of the piston head. The chambers 73 of the

cylinders

66, 67, are designed to be connected together and with the supply of fluid pressure, and the cylinders behind the pistons are connected together and with the supply of fluid pressure, and also with the exhaust side of the system as will be described.

The

tools

64, 65 may be designated the cutting off tools, and they are designed to act while the nose tool is acting to shape the nose of the shell, and inasmuch as the time 62 on the frameigs. 8, 9 and 10),

should be disengaged from the'work,l when the latter is moved forward to enable the body portion of the blank to be trimmed,

provision is made as will be describedfor insuring that the cutting-off tools are in their inoperative or withdrawn position bespindle and work begins.

After the nose blank has been shaped by. the nose-tool 50, the latter' is in its eXtreme forward position represented in Figs. 1 and 3, and in position to cut the outerysurface of the body portion of the blank, and said tool is now stationary because the radius arm or carrier 52 is stationary, inasmuch as v-the slide 55 is held against the stop 62 by the fluid pressure in the cylinder acting on the rear end of the piston 61. 50 may be relied upon to trim or cut the body portion of the blank a, but it is preferred to employ

additional tools

75, 76, for this purpose, (see Figs. 1 and 9), which tools for sake of distinction may be termed the body cutting tools. The

tools

75, 76, are secured to the carrier or radius arm 52 in such manner as to be inoperative on the nose of the blank, and so as to lbecome operative on the body portion of the blank, when the nose Vfre the forward axial movement of the The nose tool y tool has finished its work on the nose of the l blank and is in its stationary position, represented in Fig. 3. 4The

body cutting tools

75, 76, are also preferably secured to the tool carrier or radius arm 52, so as to cut on opposite sides of the body portion, and as the nose tool 50 and the body cutting tools 75,

76, are stationary while in their cutting position, the work or shell blanky a is moved with relation to the said toolswhich latter' effect a straight cut or one parallel with the axis of the spindle.

The cutting tools beingin theirl operative position to cut the body portion of the blank, the spindle is now moved axially in a forward direction indicated by the arrow 78, Fig. 11.

This forward movement is effected 'by admitting fluid pressure into the cylinder `36 through the inlet pipe 35, so as to act on the full area of the piston 17.

On the forward movement of the spindle, the blank a is fed past the

body cutting tools

75, 76, and the nose tool 50, and the outer surface of the body portion of the blank is cut to a true circle concentric with the center of the spindle.

Provision is made for automatically controlling the forward axial movement lof the spindle, and for starting this movement at or about the timethe nose tool 50V reaches its stationar f position.

To this end, a differential valve 80, 81, which is preferably made as shown in Fig. 17 has its stem or rod 82 extended outside of the valve casing 83, so as to be engaged by the upper end of a'lever 84 (see Fig. 3), which has its lower end connected by a link 85, with the lower end of a lever 86, whose upper end is extended into the path of movement of a stud or pin 87, which projects laterally from the radius arm 52.

The lever 84 may be connected with the valve stem 82, by extending its upper end into a slot 88 (see Fig. 17) in the enlarged end-'of the said stem, and the lower end of the lever 84 may be movably connected with the link 85 for a purpose as will be described, by extending the threaded end 89 of the link 85 through a slot 90 in the lever 84 (see Fig. 4), and mounting a spring 91 between the lever 84 and a nut or head 92 on thethreaded end of the link, and providing the latter with nuts 93 on the other side of the lever 84.

The valve 80 of the differential valve is shown as a piston movable in a cylinder 94, which is open at its opposite ends to connect the

chambers

95, 96 in the valve casing 83, and the Valve 81 is a disk valve of larger area than the piston valve 80 and cooperates with the outlet port of a chamber 97 in the' valve casing 83, and controls communication between the

chambers

97, 95.

The chamber 95 is connected with the spindle cylinder by the 'outlet pipe 38.

' The chamber 96'is connected with the said nected by Asupply tank 103 by the pipe 101, and the chamber 97 in the present mstance is conthe pipe 102 with a cylinder 105 I for a purpose as will be described. The

' Y 30 with the supply tank 'lever 84 and turn it so

pipes

38, 101 and valve` casing 83 connect the exhaust or outlet for the spindle cylinder 103, and normally the valves 80, 81, are open, so as to afford arfree communication between the rear end of the cylinder 30 and the supply tank 103, which contains oil or other fluid, and when the valves 80, 81, are opened as described, the fluid admitted into the spindle cylinder 30 behind the piston 17, returns to the supply tank 103 through the port 36, passage 37, pipe 38, chamber 95 of valve casing 83, chamber 96 and through the chamber 97 and pipe 102, which may be connected with the pipe 101 if desired, or as herein shown with the cylinder 105 shown in Figs. 3 and 18, for a purpose as will be described.

The valves 80, 81,l are normally opened by a spring 106 (see Fig. 3), which moves the link 85 in the direction of arrow 107, so as to cause the nuts 93 to engage the as to move the valve 8-1 away from its seat and to move the piston or valve`80 out of its cylinder 94.

The differential valve remains in this open pipe 101. A portion of' the fluid in the chamber 95 can pass position while the nose of the blank a is being sha ed, and at or about the time the nose too -operating piston 61 approaches the end of' its forward stroke, the pln 87 strikes the lever 86 and through the link 85 turns the lever 84 so as to close the differential valve 80, 81, thereby closing the outlet from the spindle cylinder 30 and causing the Huid pressure admited into the said cylinder through the pipe 35, to become effective upon the piston 17 to move the spindle and the work thereon forward -or in the direction of arrow 78. On this forward movement of the spindle, the body portion of the shell blank a ismoved past the

stationary tools

50, 75, 76, which turn the outer surface of the body portion into true cylindrical shape or form with the spindle as a center.

It will be understood, that the spindle is'rotated when it has a stationary relation to the nose-forming tool 50, and also when it has an axiall movable relation to the body-turning too s 50, 75, 76.

Provision is also made for boring the nose of the shell blank or finishing the end of the nose, when the shell blank is moved axially forward, and to this end a boring tool 110 and a squaring or finishing tool 112 (sce Figs. 1 and 9) are secured vto a carrier,

one side of the same near its front end.

The lever 113 in its operative position shown, in Figs. 1, 5 and 9 occupies an upwardly inclined position, and is adapted to be locked in this position by a pin 114, which is'extended through lugs 115 on thel cylinder 60 and through the lever 113. The lever 113 has its free end of a width substantially equal to the space between the lugs 115, so that the said lever may be firmly backed up while the boring and squaring

tools

110, 112, are in operation.

It is desirable that when the spindle has reached the end of its forward stroke, it should remain stationary so far as axial movement is concerned, for a limited time,

Abefore it begins its return stroke, for two purposes, one of which is to permit the end of the nose to be smoothed off, and the other is to enable the radius arm 52 to be lifted so as to remove the tools away from the work and thereby prevent the lattcrbeing scored or injured by the said tools on the return movement of the spindle.

The spindle is maintained in a relatively stationary position at the end of its forward stroke, by manipulating the differential valve as will now be described. The stem 82 of the differential valve has an extension 108 (see Figs. 3 and 17), which projects outside of the valve easing 83 and is adapted to be engaged by an adjustable stop, shown as a threaded rod or bolt 109, carried by a cross head 110 mounted on the and for cutting off ornear the end of the forward stroke of the spmdle, the stop 109 engages the extension l* 108 of the valve stem 82, and moves the rod 122 engages a vsion 124 of the radius arm 52. As the pres- *valves 80, 81, so as to `Under these conditions,

open the disk valve 81 slightly while keeping the valve 80 closed. v tlie Huid under pressure passes from the chamber 95 `behind the disk valve 81, and as soon as thedisk valve 81 vr'is opened sufficiently to pass through the pipe 102 an amount of fluid sub- .stantially equal' to that flowing into the s indle cylinder behindthe piston 17 t erein, the differential valve is balanced, vand the spindle remains stationary with relation to axial movement, and while the spindle is stationary, the tool 112 squares off or smooths the end of the nose 47 of: the

shell.

which passes through the pipe 102 into the cylinder 105 (see Fig. 18) containing a piston 121, whose collar 123 on an extensure accumulates in the cylinder 105, the

piston 121 `is moved, and its rod -122 lifts the radius arm 5 2 until the piston 121 reaches the end of its upstroke, at which time the tools. 50, 75, 76, are clear of the work. On the upward movement of the radius arm, the pin 87 is disengaged from the lever 86, which allows the springl 106 to move the link 85 in the direction of the arrow 107, Fig. 3, and through the nuts 93 turn the lever 84 so as to open wide the diierential valve 80, 81, thereby connecting the spindle cylinder 30 with the supply tank 106, and permitting the spindle to be returned to its starting position by the fluid pressure in the chamber 32 of said cylinder.

At or about the time the lifting piston 121 reaches the end of its upstroke, a collar or hub- 125 on the piston rod engages a crank or arm 126 on a rock-shaft 127, and rocks the latter so as to open a valve 128 (see Fig. 5) in the exhaust or outlet pipe 129 for the cylinder 60, thereby 4allowing the piston 61 to be returned by fluid pressure admitted through the pipe 132, Fig. 3, into an annular chamber in front of the rear end of the piston 61, similar to the chamber 62 of the spindle cylinder 30.

The spring 91 coperates with the lever 84 and the head 92 on the link 85 to form a practically positive connection, yet one which permits the differential valve 80, 81 to be moved by the stop '109. without moving the link 85. For by reference to Fig. 3', it will be seen that when the radius arm 52 is in its forward stationary position, the pin 87 is in engagement with the lever 86, and therefore the link 85 is prevented from being moved by the lever 84, but the latter is permitted to be moved by the valve stem 8-2, vby reason of the spring 91 yielding in response to movement of the lever 84.

The

cutting olf tools

64, 65, are mo-ved toward the spindle by the fluid pressure admitted into the

cylinders

66, 67,n so as to act on the full area of the enlarged heads 140, 1410i the

pistons

68, 69, which cylinders are connected in multiple with a pressure supply pipe 142 by branch pipes 143, 144 (see Fig. 16) and by connecting the cylinders in multlpleboth tools are caused v to do an equal amount of work. f

The

cylinders

66, 67 have theirpuid outlet or return a common return pipe 147,.,which leads to the supply tank 103.

Thefpistons

68, 69,V are moved on their return stroke by fluid pressure admitted into the annular charnbers 7.3 in the

cylinders

66, 67, and said chambers are connected in multiple with a pressure pipe 148 by branch pipes 149, 150 (see Fig. 1). The fluid pressure becomes effective to move the pistons, 68, 69 on their forward or working stroke, when a valve 151 (see Figl in the exhaust or return pipe 147 isclosed. The exhaust valve 151 is conventionally shown in Fig. 7, as it may be of any suitable construction, and said valve is normally held open by a spring 152 encircling its. stem '153.

Provision is made for manually closing the exhaust valve 151 and also for automatically opening the same by the cutting-off piston. The exhaust valve 151 may be manually closed as herein shown by means of a lever 155, which has one arm encirclingthe valve stem 153 between a nut 156 and collar 157, and which is connected with a crank 158 on the rock-shaft 127, by collar 160 and nut 16'1 on a rod 162, which is extended through the lower end of the said lever.

By reference to Fig. 7, it will be seen that when the rock-shaft 127 is turned, soas to move the rod 162 in the direction of the arrow 163, the nut 161 moves the lower end of the lever 155 in the same direction, and acting on the collar 157 moves the valve stem 153 so as to close the exhaust valve 151, which action permits the fluid pressure to accumulate in the pipe 147 and hold the exhaust valve in its closed position, and also to accumulate in the

cylinders

66, 67, and move the

pistons

68, 69, toward the spindle.

Provision is made for positively opening the exhaust valve '151, when the cutting-ofi tools have completed their work, and for this purpose. the piston 68 has secured to its head 140 (see Figs. 16 and 19), a rod 165. which is extended through the head of the cylinder 66 and through the upper arm of the lever 155 and provided with a nut 166, which is adjusted on said rod so as to engage the upper arm of said lever, and turn the latter on its pivot and move the shown as a rota-ry pump 180 (see valve stem 153 so as to initially open the exhaust valve 151 against the pressure and permit the spring 152 to complete the openlng of said valve substantially in an 1nstant, thereby preventing further forward movement of the cutting-off tools, which are then moved back to their starting position by the fluid pressure in the chambers 7 3 of the

cylinders

66, 67. The rock-shaft 127 also controls the exhaust valve 128 for the cylinder 60. and 'to this end, said rockshaft is provided with a crank or arm l170 (see Fig. 5). which straddles the stem 171 of the exhaust valve 128 between a nut 172 and a collar 17 3,l the latter being acted upon by the spring 174 to normally hold the valve 128 open. y

When the rock-shaft 127 is rocked by means of the handle 175 in the direction of arrow 176, Fig. 5, the crank or arm 170 closes the exhaust valve 128 and the same movement closes the exhaust valve `151.

From the above description, it will 'be seen that the fluid pressure becomes effective to axially move the spindleforward and to move the pistons 61. 68 and 69 forward when the return circuits from the cylinders of these parts are closed.

VThe return circuits referred to, are ncrmally open and provision is made for a constant circulation of the oil or other fluid from the supply tank 103 through the vari- -ous cylinders referred to and back to the tank. To this end, a suitable pump, herein Fig. 2) is driven from a main shaft 181 by a belt 182. passed about pulleys 183. 184 on the shaft 181 and the pump shaft185.

The pump 180 takes oil or other liquid from the supply tank 103 through a pipe 186, strainer 187 and pipe 188, and discharges it through the pipe 33 into the chamber 32 of the spindle cylinder 30, from which it passes. through the outlet pipe 190 (see Figs. 3 and 15) into coupling 191. The T-coupling 191 is connezted by pipe 195 with a pipe 196. which forms a main for a plurality of branch pipes 132` 197, 198 and 35. The pipe 132 leads to the annular chamber within the cylinder 60. The pipe 198 has a coupling 199, from which leads the pressure supply pipe 142 for the cut-off

cylinders

66, 67, and thesupply pipe 148 for the chambers 73 of said cylinders. The pipe 142 is provided Witha throttle valve, preferably a needle valve 200, by which the rate of flow into the

cylinders

66, 67, behind the pistons may be regulated. The pipe 197 is provided With a similar needle valve 201, and the pipe 35 is provided with a needle valve 202, which regulate the flow of fluid into the cylinder and into the spindle cylinder 30 respectively. l

The pipe 148v serves as a supply for the chamber -ber 21, wherein it operation, the valve 2l provided with the diaphragm 18, which operates the gripping jaws c. To this end, the pipe 148 has connected with it a pipe 204, having its other end connected with a coupling 205, (see Figs. 1 and 12), which is attached to the stationary cross head 206. The coupling 205 has connected with it a pipe 207, which is extended into a larger bore or socket 208 in the end of the rod 16. The fluid admitted into the socket 208 passes through ports 209 into the chamacts on the diaphragm 18 to cause the gripping jaws to secure the work onto the spindle.

The pipe 204 is provided with a three-way valve 210, which is connected by the pipe 211 with the supply tank. When the valve 210 is turned into one position, fluid pressure 1s supplied to the diaphragm chamber 21, and in another position of the valve 210, the chamber 21 is connected with the tank 103 through the pipe 211.

The three-Way valve 193 in one position connects the pipe 215 with the return pipe 101, through pipe 194 and in another posi tion connects the pipe 192 with the pipe 215 (see Figs. 1, 3, and 20), which leads to a bearing 216 for the main shaft 181, and communicates with an annular groove 217 in said shaft, from which leads an axial passage 218 in said sha said passage at its opposite end leading to a chamber 219 in a hydraulic clutch, (see Fig. 20), which controls rotation of the spindle.

The hydraulic clutch is mounted on the shaft 181 and is provided with a diaphragm 220, which moves a clutch member 221 into d engagement with a coperating member 222 to render a pinion 223 fast on the shaft 181. The pinion 223 is fast to the clutch member 222 to rotate therewith, and the clutch member 221 is keyed to the shaft 181 to rotate therewith and to slide thereon. The clutch member 221 is moved out of engagement with the member 222 by a spring 225. The pinion 223 meshes with and drives a gear 226 fast on the shaft 44. The main shaft 181 is designed to be rotated continuously and is provided with a driving pulley 227.

The valve 193 controls the operation of the hydraulic clutch, and when the machine is idle, the said valve connects the pipe 215 with the tank 103 through the

pipes

194, 101. When it is desired to start the machine in 193 is turned to connect the pipe 215 with the pressure pipe 192, and thereupon pressure `is admitted into the chamber 219 of the clutch, which pressure forces the clutch member 221 into engagement with the clutch mem'ber 222, thereby startin rotation of the spindle.

Whi e the cutting tools are acting on the work or blank a they may be supplied with a Cooling and lubricating solution, such as a pump 230, (see Fig. 2), which may be driven by a belt 231 from the pump shaft 185.-

While it is believed that the operation of the machine is clear from the aboveydescrip` tion, a brief descriptionv ofi-.he Opemn Wm now be given.. .l l

Assume that Fig. 11. y

The radius arm 52'is in .a substantially upright position with its rear end resting on a projection 250 on the pivot 54, the lever 118 is thrown back, and the cuttin -of tools are in their withdrawn position. he blank a is now placed upon the spindle. The radius arm 52 is then lowered into the position shown in Fig. 9, and the nose tool 50 adjusted to the nose of the blank an. The lever ll'may be lowered at this time and locked by the pin114.l Fluid is circulated by the pump 180, which is continuously driven .from the main shaft 181. The operator now turns the three-way valve 210 to connect the pipe 204 with the pipe 148,;and thereby admit iuid pressure into the chamber 21, which acts on the diaphragm 18 and causes the gripping jaws to secure the blank u. to the spindle. The valve 193 is now turned to close the pipe 194 and connect the pipe 215 with the pressure pipe 192, so as to admit pressure into the chamber 219 of the hydraulic clutch and start rotation of the spindle and work.

` The work is now ready for the nose-forniinp; and the cutting-off operations. The operator having properly positioned the nose tool 50 by turning the radius arm on the pivot block 58, opens the needle valves 200, 201, and moves the handle 175 to turn the rock-Shaft '127 and close the exhaust valves` 151, 128. The circulation of iuid thrcugh the

cylinders

60, 66, and 67, is

thus interrupted and pressure builds up in said cylinders, thereby moving the pistons 61. 68, 69, on their forward strokes. The piston 61 moves the` radius arm 52 in the arc of a circle with theI pivot 54 as a` center, until the sliding bar 5,5 meets the stop 62.

ln the meantime,- otf the rear end of the blank f1.. as the cutting-off

pistons

68,69, have reached the end of their forward Stroke, the exhaust val ve 151 is automatically opened by the nut 166 and lever 155, andthe

pistons

68, 69, and the cutting-off tools 64, are returned to their starting position."

The operator can manipulate the nose tool 50 any desired number of times to make any desired number of cuts with the nose tool, by simply rocking the shaft 127 so as to open the, exhaust valve 128, which permits the piston 61 to', be returned to its starting l y y ,l 'tools 75, -76 are now v'stationar the machine is in position to* receive the blank a. In' this case, the spindle is at the end of its return stroke as shown in axially past said the

cutters

64,65 trim As soon fpositionyby the pressure admitted into the cylinder 460 through the pipej132.

After thenose of the Shel the pressure"y infthe tool 50'and body and in proper position to act on the lo y portion ofthe lank, which is now fed forward tools. The forward feed of the spindle and work is automatically started by the pin 87 moving the lever 86, which through the link 85, spring 91 and lever 84 closes the differential valve 80, 81, and causes the Huid pressure to become effective on the piston 17 of the spindle.

The spindle is moved axially forward a sufficient distance to insure the body portion of the blank a being properly cut to cylinder' 60, and the nose a true circle with the spindle as a center,

and also to bring the end of the, nose into and the squai'in tool 112. When the nose has been proper y bored, the forward feed of the spindle and work is arrested by the stop 109 operating the differential valve so as to balance the ressure upon the said valve, and as the spindleand work continue to rotate, the tool 112 smooths olf and finishes the end of the nose Jbefore the spindle starts on its return stroke. A

In the present machine, .the pressure which passesbehind the disk valve 81 passes to the cylinder 105, and acting on the piston 121, lifts the radius arm so that the

tools

50, 75, 76 clear the work and prevent the latter being scored or otherwise injured by the said tools on the return stroke of the spindle. valve 80, 81, being opened wide by the spring 106 assoon as the pin 87 is removed from engagement with the lever 86. The radius arm 52 is then turned by the operator into its substantially vertical position, and the lever 113 is also turned back, which leaves the work accessible to be removed from the spindle as soon as the valve 210 is turned to connect the pipe 2011 with the pipe 211, and the valve 193 is turned to connect the pipe 215 with the pipe 194C.

When the pipe 204 is connected with the pipe 211, the fluid in the chamber 21 is forced back into the tank 103 by the spring 27 which latter moves the rod 16 so as to permit the grippingjaws to be disengaged from the work, and when the pipe 215 is connected with the pipe 194e, the spring- 225 throws out the hydraulic clutch and stops rotation of the spindle.

Provision is made for regulating the amount of fluid pressure in the system, and to this end a relief valve 260 (see Fig. 8) is connected with the T-coupling 191 and by pipe 261 with the tank 103.

Y has been pro -erly trimmed off, the radiusarm 52 is he d ,a'gaii'ist the stop 62 by salv which is effected by the differential v of machine embodying the movement of the 'said spindle in one In the present instance, the radius arm 52 is automatically lifted so as to have the tools clear the work before the spindle makes it return stroke, but it is not desired to limit the invention in this lifting movement of the radius arm may be effected manually, in which case the cylinder 1'05 may be omitted, and the pipe 102 connected ,with the tank 103 as indicated by the dotted lines in 'Fig 3.

We have herein shown one construction invention, but it 1s not desired'to limit the invention to the particular construction shown. The

spindle cylinder 30 may be provided with an v outlet pipe 300 for any air which cumulate in the chamber 32.

Claims. f 1. In combination, a Work-holding spin'- dle having an axial and a rotary movement,

may aca tool carrier mounted to move in the arc of a elrcle to cause a tool carried thereby to act on a portion of the Work, and means for moving said spindle axially to move the Work With relation to said tool to cause the latter to act on another portion of the Work substantially at the end of the circular tool carrier.

2. In combination, a Work-holding spindle, means for rotating the same, a tool carrier extended transversely of the said spindle and pivoted at one end and having its other end movable `longitudinally with rclation to the Work-holding spindle to cause the tool to describe an arc in the direction of the length of said spindle. a piston operatively connected with said tool carrier to turn the latter on its pivot, and a cylinder for said piston.

8. In combination, a Work-holding spindle, means for rotating it, a tool-carrier mova'ble in the arc of a circle longitudinally of the Work on said spindle While the latter is revolving in a fixed position, means for moving' said spindle longitudinally after it has been acted upon by the tool mounted on said tool carrier, a tool-operating piston movable transversely with relation to said spindle after the latter has been moved longitudinally a predetermined distance, and a cylinder for said piston.

In combination, a work-holding spindle movable axially, a cylinder in which said spindle reciprocates, a diil'erential valve controlling the circulation of fiuid through said cylinder, means for operating said valve to .interrupt the circulation of Huid through said cylinder and thereby eiect axial movement of said spindle in one direc- `tlon, a tool carrier movable longitudinally with relation to said spindle and coperating with said differential valve to operate the same and effect axial movement of direction. 5. In a machine ofthe character described,

this respect, as

in combination, a Work-holding spindle, a cylinder in Which saidI spindle reciprocates and through which fluid is circulated, a tool carrier movable lengthwise of the Work on said spindle, a piston for moving said tool carrier, a cylinder for said piston and through which fluid is circulated, a piston movable transversely With rela-tion to said spindle, a tool operated Iby the last-mentioned piston, a cylinder for the last-mentioned piston and through which Huid is circulated, and means for interrupting the circulation of fluid through said cylinders to cause the Huid pressure to become effective to move said pistons and spindle.

6. In combination, a Work-holding spindle having an axial and a rotary movement, a cylinder in Which said spindle rotates and moves axially, a valve controlling the axial movement of said spindle in one direction. a tool to act on the Work, a carrier for said tool movable toward said spindle, and mechl anism operatively connected with said valve and actuated by said tool carrier to operate salid valve to cause the spindle to move axial y.

7. In combination, a Work-holding spindle having' an axial and a rotary movement, a cylinder in which said spindle rotates and moves axially, a valve controlling the axial movement of said spindle in one direction, a tool to act on the Work, a carrier for said tool movable toward said spindle, and mechanism operatively connected with said valve to move the latter.

8 In combination, a Work-holding spindle having an axial and a rotary movement, a tool-carrier pivotally mounted to turn in the arc of a circle to cause a tool carried thereby to act on a portion of the Work, and means for moving said spindle axially to move the Work with relation to said tool.

9. In combination, a Work-holding spindle having an axial and a rotary movement, a tool to act on said Work and toward Which said spindle is moved axially, a carrier for said tool bodily movable into and out of the path of movement of said spindle, a piston operatively connected with said spindle, a cylinder in Which said piston is moved axially and is rotated, fiuid means for eifecting axial movement of said piston andy spindle, and means for rotating said piston and spindle While they are moving axially.

10. In combination a work-holding spindle having an axial and a rotary movement, a cylinder in which said spindle reciprocates and through which fluid pressure is circulated, a valve controlling the circulation of fluid through said cylinder, a tool 4carrier movable toward the work on said dle having an axial and a rotary movement, a cylinder in which said spindle reciprocalcs and through which iuid pressure is circulated, a valve controlling they circulation of fluid through said' cylinder, a tool to act, on thc, work on said spindle and mova'ble lengthwise of said spindle, and means movable with said tool for operating said valve to cii'ect axial movement of the spindle.

12. In combination, a `Work-holding spinillc, having an axial and a rotary movement, means Jror eilecting axial movement of said spindle in one direction, and a tool to act on thc work on said spindle and'movable Toward said spindle and controlling the axial movement of the spindle toward the lsaid tool. l i y 13. In combination, a Work-holding spindle, means for moving said spindle axially, and a tool movable with respect to the spindle to act on the Work thereon and controlling axial movement of said spindle in one direction.

14. In combination, a work-holding spindle, means Jfor moving said spindle axially, and a tool movable with respect to the spindle to act on the work thereon and controlling axial movement of said spindle in opposite directions.

15. In combination, a work-holding spin"- dle having an axial and a rotary movement, a cylinder in which said spindle recipro cales and through which fluid pressure is circulated, a valve controlling the circulation of l'uid through said cylinder, and

mechanism .for operatmg said valve to interrupt the circulation and thereby -move the pistony axially, said mechanism having a yielding member to permit the valve to be opened to again establish the circulation.

16. In combination, a work-holdingspindle having an axial anda rotary movement, a cylinder in which said spindle reciprocates and through which fluid pressure is circula-ted, a valve controlling circulation of the fluid through saidcylinder, and a tool movable with relation to said spindle to act on the work thereon and controlling the opierati'on of said valve.

In testimony whereof, We have signed our names to this specification.

HENRY E. WARREN. WILLIAM M. WHEILDON.