US1700967A

US1700967A - Metal-working machinery

Info

Publication number: US1700967A
Application number: US155965A
Authority: US
Inventors: Baerbalck Hans
Original assignee: American Tool Works Co
Current assignee: American Tool Works Co
Priority date: 1926-12-20
Filing date: 1926-12-20
Publication date: 1929-02-05
Anticipated expiration: 1946-02-05

Description

Feb.5 1929. 1,760,967

` H. BAERBALCK METAL WORKING MACHINERY m VII/I4 Feb. 5, 1929. 1,700,967

H. BAERBALCK METAL WORKING MACHINERY Filed D60v 20. 1926 2 Sheets-Sheet 2 /N VE N TOR.

Patented Feb. 5, 1.929.

UNITED STATES PATENT OFFICE.

HANS .'BAERBALCK, OF CINCINNATI, OHIO, ASSIGNOR TO THE AMERICAN TOOL WORKS COMPANY, 0F CINCINNATI, OHIO, A CORPORATION OF OHIO.

METAL-WORKING MACHINERY.

Application led December 20, 1926. Serial No. 155,965.

My invention relates to metal working machinery, especially to such machinery employing an adjustable crank for operating a reciprocating element, such as the tool-ram of a metal shaping machine, and my invention is exemplified as employed in connection with such use. In such machinery the crankof the power transmitting crank member is adjustable toward and from the axis of rotation of the crank member in order to adjust the stroke of rcciprocation of the tool-ram.

It is the object of my invention to provide novel means for maintaining such adjust ments during operation of the machine, and to provide novel means for readily releasing such maintaining means by manipulation of an adjusting tool or wrench for effecting such adjustment.

The invention will be further readily understood from the following description and claims, and from the drawings, in which latter:

Fig. 1 is a vertical axial section of my improved device, taken in the plane of the line 1 1 of Fig. 3, and partly broken away.

Fig. 2 is an enlarged axial section of a detail of my .improved device, showng the operating tool and release of the maintaining clutch thereby.

Fig. 3 is a cross-section taken in the plane ofthe line 3 3 of Fig. 1, partly broken away.

Fig. 4- is a cross-section of the same, taken in the plane of the line 444 of Fig. 1.

The shaping machine exemplified comprises a usual frame 11. on which there is an upper guidewav 12. A tool-ram 13 is reeiprocated lengthwise in the guideway` and is arranged to carry a usual tool-holder at its end for receiving the tools. The ram is reciprocated by a usual rocker-arm 14` pivoted at its lower end on a shaft 15, supported in bearings 1 6 in the frame. The upper end of Vthe 1ocl er-arni is articulated at 17 with a linlr 18. which latter if; articulated at 19 with a nul-block 20.

The nut-block is adiustable lengthwise of the ram by means of a screw-rod 25, threaded in the nut-block. the nut-block being clamped in adjusted positions to the ram by means of a handle in usual manner, for positioning the path of stroke of the tool-ram.

The rocler-arm is provided with a usual longitudinal guideway 2f). in which there is a slide-block 20. which forms a bearingrjl'or ihr cranlopiii 31 journalerl therein. The

crank-pin is on a bull-wheel 32, suitably rotated at selective speeds, as by having a suitalilc drive pinion driven at selective speeds meshing with the gear teeth 33 thereon.

The stroke of the tool, that is, the distance which the tool moves at each reciprocation of the rocker-arm 14, is governed by the position of the crank-pin 31 with relation to the axis of rotation of' the bull-wheel. The adjustment of the crank-pin is effected by mounting the crank-pin on a slide-block 35, which is adjustable lengthwise in a guidewav 36 in the bull-wheel. The block 35 has a threaded bearing 37, an adjusting screw 38 being threaded therethrough.

The adjusting screw is journaled and held endwise in a bearing 39 on the bull-wheel, and is rotated by a bevel pinion 4() fixed thereon, with which a bevel pinion 41 meshes. The bevel pinion 41 is fixed on an adjusting shaft 42.

The hub 45 of the bull-wheel has a bushing 46 therein, which is fixed to the bull-wheel by a screw 47, so as to rotate with the bullwheel. A block 48 is fixed to this bushing, as by a positioning screw 50, between a hub 51 of the block and the bushing.

The hub of the bull-wheel is rotatable in a bearing 54 of the frame of the machine, in which a bushing 55 is located. A bearingsleeve 56 is fixed to the bearing 54 by screws 57, the bearing-sleeve having an annular fiange 58 through which the screws are received. The flange spans the outer end of the hub of the bull-wheel, and the bearingsleeve forms a bearing for the outer end of the bushing 46 fixed t0 the bull-wheel. The bull-wheel is held endwise in the bearing 54.

A housing 61 comprises an inner section 62 and an outer section 63 connected by screws 64. It has a bearing 65 about the bearingsleeve 56 and a sleeve extension 66, which latter forms a housing for the indicating means to be presently described, which indicating means are, however, not part of the present application, the same being shown, described and claimed in a separate application filed by me in the United States Patent Office December 20th, 1926, the same being Serial No. 155,964.

A shell 69 has a fiange 70, by means of which it is secured, as by bolts 71, to the block 48, so as to rotate with the bull-wheel. A bushing 7 2 is received about a hub rtion the block 48 about. the shaft 4.2, and is loaated the outer end portion otl the adjusting shat't 'with a longitinlinal spline groove T6, in which a key T7 is recei ved, the collar being' provided with a. comj'ilemcntal grcaivc T8 lor recei.'ing the key.

The outer periphery ot the collar is provided with screw threads T9, and the inner peripheiwv ol' the shell Q9 is provided with internal threads St) compleuicntal to the threads 79. When the adjusting` shaft is rotated, the collar T5 rotates therewith, and, by means ot a threaded connection ol the inner periphery ot the relatively stationary shell (it). the collar T5 is also moved cndwise along the adjusting shat't.

A ring 5%?) is connected with said collar and moves endwise with said collar. This ring is shown received in an annular groove 84 in the collar. The collar is provided with a removable section which forms one wall ot said groove, so that the ring may be received in the groove and the remov'able section be fixed in place. as by screws Sti.

Pins 87 extend radially from the ring, and extend through longitudinal slots in the shell 69. A collar 89 is located about the shell and moves lengthwise along its outer periphery, and is connected with said pins so as to be moved lengthwise by said pins, said pins being shown received through holes 90 in said collar.

A block 91. shown as a segment block, is received about the outer periphery ot the shell. and has connection, shown as a segmental tongue and groove connection 927 vith the collar 89, so as to transmit the axial movements ot the collar 89 to said block 91, and permit rotative movements of the housing ($6 about the shell.

The block Q1 is provided with an indicating linger 111. which is shown tixcd to said block by screws 112, the indicating finger being provided with a shank 11? received through a slot4 1M extending lengthwise through the housing 66.

The indicating` finger is arranged to register with the markings ot a scale 115, to indicate the adjustn'ients oi length ot stroke of the trail-ram made by the adjusting shaft 42, when adjusting the distance ot the crank-pin fll from the ax at rotation ot the bull-wheel.

A socket-piece 121 is secured to the outer end ot the shell G9, and forms an extension of the same. The socket-piece is provided with a rabbet 122, in which the outer end ot the shell is received, a shoulder 123 at the end ot the rabbet mating with the outer end ot the shell. Screws 124 secure said socketpiece and the outer end of the shell together.

A plunger 125 is received about the outer end of the adjusting shat't 42, and is rotatively held thereto, as by means ot' a key 126 received in a key-way 12T in said plunger and in the spline-groove T6. A spring 128 is received about the huh 120 ot said plunger and is located between the llange 130 ot said plunger and the bottoni wall lill otl the socket 182 in the socket-piece` t'or norn'ially urging the plunger outwardly. rllhe hub of the plunger and the spring are arranged to be' received in said socket to desirable extent.

A cap is received crosswise ot the outer end ot the socket-pimje` beine' secured thereto by screws 136, and forms an inw rdly eX- tending flange for the outer end ot the socketpiece.

it clutch 1537, shown as a tooth clutch, has its teeth located respectively on the plunger and the cap, so as to hold said plunger in angular position with relation to the socketpiece when the clutch is engaged, tor iixing the shell (i9 and the adjusting shaft 42 in rotative relation when said clutch is engaged, and perinitti ng rotation ot the adjusting shaft with relation to the shell when said clutch it disengaged.

The teeth ot the clutch are preferably tine teeth so that upon minute rotative adjustments of the adjusting shaft 42 with relation to the shell, and consequently with relation to the bull-wheel, being made, the teeth of the clutch will be reengagcd in new relations after such adjustments are completed.

The outer end ot the shat't is formed to receive a suitable wrench, and the wrench is so termed and it-y and the clutch-collar or jflunger are so related that when the wrench is connected with the adjusting shalt l2 tor making an adjustment, it also releases the clutch 1b? by moving the clutch-collar 12.3 endwise and discngaging the teeth thereon from the teeth at the outer end of the shell, in order to permit the desired relative rotation between the operating shalt andthe shell.

Thur-f a wrench l-'tl is provided with a handle 'rlil and with a socket-piece l-l. arranged to be received about the outer end ot the adjusting shalt to sn'llicient extent to push the plunger 125 inwardly, and thi-rcb'v ois engage the clutch. the wrench being revel-veil through a hol;` 1-14 in the cap lila. The outer end ot' the adjusting shalt is shtmn as squareended` the l'rottoin end otthe rachet ot thc wrei'ich being' com]ilcmentallj.Y tor, iff-d to coact therewith for turning the adjusting shaft.

ln operation.. the hull-wheel rotates and carries the. crank-pin with it in its rotations` for rocking the rocke '-rrm. and consequ: ly reciprocating the tuoi-ram. The length ot stroke ot' the tool-ram is delerminml by the distance ot the crank-pin from the axis itl() lli) tit)

ot' rotation of the bull-wheel. During rotation ot the bull-wheel, the hub 45 thereof and the bushing 4G, as well as the shell 69. the socket-piece 121 thereof, the clutch 137, the plunger 125, the adjusting shaft 42. and the threaded collar 75, rotate with the bull-wheel, the ring 8S remainingI non-rotative in its annular groove in the threaded collar.

W'hen it is desired to adjust the stroke of the tool-ram, which may be eti'eeted while the tool-ram is reciprocating or at rest, the wrench is pushed inwardly about the outer end of the adjusting shaft for contacting the plunger 125 and pushing the plonger inwardly and flisengaging the clutch 13T. and engaging the complementai facesy ot the wrench and adjusting shaft, whereupon rotation is imparted to the adjusting shaft 42 b v means of the wrench, in either direction, relatively to the shell (it), for rotating the screw-rod B8, and moving the crank-pin toward or from the axis ot rotation oit the bull-wheel. in order to cause a shorter or longer stroke of the tool-rain.

Such rotation of the adjusting shatt. Lt2 'otates the threaded collar 75 with relation to the shell, thereby effecting axial movement ot the threaded collar in desired direction along the adjusting shaft 42. by reason of the connection ot the threaded outer periphery of said collar with the threaded inner periphery ot the shell, the extent of such adjustment being indicated simultaneously by movement ot the indicating finger 111 lengthwise of the scale 115, the adjustment being continued until the desired length ot stroke of the tool-rain is indicated by the position ot' the indicating finger on the scale, whereupon the wrench is withdrawn, and the clutch is automatically reengaged in the new relation between the adjusting shaft, the crank-pin and the bull-wheel.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is:

1. Tn mechanism of the character described, the combination with a rotative power transmitting member and an adjustable power transmitting part thereon Vadjustable toward and from the axis of rotation of' said power transmitting member, of an adjusting shaft for adjusting said power transmitting part. said power transmitting member and said adjusting sha't't normally rotating together. and means automatically maintaining said power transmitting member and said adjusting shaftl in connected relations comprising a clutch including a clutch-collar having operative connection with said adjusting shaft for rotating with and for moving lengthwise of said adjusting shaft. and a coacting clutch-member having` operative connection with said power transmitting member so as to rotate with said power transmitting member, means resiliently urging said clutch-collar tov'a rd its eoacting clutch member for clutch engagement, a turning wrench, said turning wrench and said adjustingl shaft having complemental parts tor combined rotation of the same, and said turning wrench and .said clutchcollar provided with parts coacting with each other for release of said clutch upon engagement of said comjgilement'al means and for engagement of said clutch upon release ot said comlilen'icntal means.

2. ln mechanisn'i of the character described. the combination of a rotative power transmitting member. a power transmitting part on said power transmit-ting member, means tor adjusting the distance of said power transmitting part from the axis ot' rotation of said power transn'litting member comprising an adjusting shaft. a shell extending from and rotatable with said power transmitting member. said adjusting shaft concentrically located in said shell, said shell provided with a flange extending toward said shaft, clutch-teeth on said flange, a clutcheollar having operative connection with said shaft so as to be slidable axially along saidv shritt and to rotate with said shaft throughont its various axial positions along said shaft, said clutch-collar provided with clutchteeth coniplemental to said first-named clutch-teeth. resilient means causing movenient of said clutch-collar in one` direction toward said flange for engagement of the clutch, and a rotating tool for said adjusting shaft, said clutch-collar arranged to be moved into disengaged relation by said rotating tool.

3. ln mechanism ot the character described. the combination of a rotative power transnlitting member, a power tansmitting part on said power transmitting member, and means for adjusting the distance of said power transmitting part from the axis of rotation of said power transmitting member comprising an adjusting shaft whose axis of rotation is coincident with said firstnamed axis, a shell thereabout rotatable with said power transmitting men'iber, said shell provided with a socket-piece at its outer end. said socket-piece provided with an in vardly extending flange at the outer end of the socket therein. said tiange provided with clutchteeth and a compleinental clutch collar in said socket having operative connection with said adjusting shaft so as to rot-ate with and be movable axially along said adjur-ting shaft, resilient means in said socket normally urging` engagement of said clutch collar with said toothed flange, and a wrench for rotating` said adjusting sha ft. said wrench arranged to move said clutch collar into release relation.

lin testimony whereof, l have hereunto signed my name.

HANS BAERBALCK.

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