US1539364A - Turning machine - Google Patents

Description

May 26, 1925.

C. E. MARSH TURNING MACHINE Filed Feb. '7, 1924 3 Sheets-Sheet l M n M C. E. MARSH TURNING MACHINE Filed Feb '7, 1924 3 Sheets-Sheet 6E Wars May 26, 1925- May 26, 1925. 1 53 9354 c. E. MARSH TURNI NG MACHINE Filed Fe '7, 1924 5 Sheets-Sheet 5 aim/W84 Patented May 26, 1925.

UNITED STATES canons EDWARD MARSH, or erasure, eno'aeIA.

TURNING MACHINE.

Application filed February 1924. Serial No. 691,237.

To all whom it may concern:

Be it known that l, CLAUDE EDWARD Miner-r, a citizen or"- the United States, residing at Atlanta, in the county of Fulton and State of Georgia, have invented certain new and useful Improvements in Turning Machines, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to an improved portable crank pin turning machine and one object of the invention is to provide acranl: pin turningmachine which may be directly connected with a crank pin or with the axle of a locomotive engine or any other large piece of machinery so that the crank pin or axle may be trued without being removed from an engine and taken to a shop.

Another obiect ol' the invention is to so construct this machine than an inner cylindrical member may be connected with the outer end portion of the crank pin or axle and an outer cylindrical member which carries the cutting mechanism caused to rotate about the inner cylinder so that the cutters may be brought into engagement with the crank pin or axle and this axle or crank pin trued.

Another object oi the invention is to provide improved means for causing the cutters to move longitudinally of the axle as the outer sleeve rotates, thereby making the machine self-feeding.

Another object of the invention is to so constructthis machine that a pair of cutters may be provided thereon, one "for cut ting a portion oi a crank pin or axle having a relatively small diameter and the other tor cutting a portion having a relatively large diameter.

Another object oi the invention is to so construct the machine that the cutters may be selectively placed in operation so that one or both of them may be used.

Another object of the invention is to so construct the cutter feeding mechanism that the cutters may be released and manually adjusted and then one or both of them caused to be automatically fed longitudinally of the axle during the cutting operation.

Another object of the invention is to so construct this machine that the direction in which the cutters are fed along the axle dun ing rotation of the outer cylinder may be controlled.

This invention is illustrated in the accompanying drawings, wherein Figure 1 is a view showing the improved turning machine in side elevation with a portion thereof shown in section.

Figure 1 is a section on the line new of Figure 1.

Figure 2 is .an end elevation of .the improved crank pin turning machine.

Figure 8 is a transverse sectional View taken along line 33 or F i gure 1.

Figure 4': is a longitudinal sectional view through the machine.

Figure 5 is a sectional view taken along line of Figure 4.

- This improved machine is for use in tru-' ing an axle or'crank pin of a locomotive wheel and is intended to be connected with the outer end portion of the axle or crank pin. There has, therefore, been provided a cylindrical body or hearing 1 which may be termed an inner cylinder and has one end portion internally threaded, as shown at 2, so that it maybe screwed onto the end of the crank pin or axle or, if desired, a suitable crank pin or axle-engaging clutch member for engagin axles and crank pins of different diameters may be screwed into this internally threaded end portion. At its rear end this inner cylinder has been provided with an annular externally projecting shoulderB having a worm thread 4 provided thereon for imparting movement to the cutting mechanism to be hereinafter described. This outer end portion of the inner cylinder also carries a drive shaft 5 which is rotatably mounted in a bearingfi connected with the walls of the inner cylinder. The shaft 5 is disposed axially of the inner cylinder and carries a gear 7 which meshes w1th idler gears 8 rotatably mounted at opposite sides of the shaft 5 and serving to transmit rotary movement from the drive shaft 5 to the outer cylinder which carries the cutting mechanism.

The outer cylinder 9 rotatably fits about the inner cylinder 1 and is held against longitudinal movement upon this inner cylinder by securing nuts 10 which are secured upon the externally threaded portion 11 at the forward end of the inner cylinder. It will thus be seen that the outer cylinder will be confined between the annular shoulder 3 and the securing nuts 10 so that it will be prevented itrom having longitudinal sliding .llO.

movement but permitted to rotate freely about this inner cylinder. Fiber washers 12 and 13 may be provided at the ends of the outer cylinder so as to permit of a close fitting and easy turning. The rear end portion of this outer cylinder is provided with internal teeth 14 which mesh with the teeth of the gears 8 so that when the shaft is rotated this outer cylinder will be rotated. By having the shaft 5 positioned axially of the inner cylinder and a pair of gears provided for transmitting rotary movement to the outer cylinder a well balanced drive will be provided. It will be understood, however, that a greater number of gears 8 may be provided, if so desired.

In order to slidably mount the toolcarry ing bars 15 and 16 there has been provided arms 17 and 18 which extend radially from the outer cylinder 9 and are provided with side recesses 19 to receive ribs 20 which e."- tend longitudinally of these tool-carrying bars and are provided with teeth so that these ribs will serve not only as keys to prevent the tool-carrying bars from having rotary movement in the arms 17 and 18 but will also serve as racks through the medium of which longitudinal sliding movement may be imparted to the tool-carrying bars. At their forward ends these tool-carrying bars will be provided with a conventional construction so that cutters may be secured in the forward end portions of the tool.- carrying bars and caused to extend at a desired angle when the fasteners 21 are tightened. By having the tool-carrying bars positioned as shown, one will be positioned at a greater distance from the axis of the inner cylinder and therefore when the machine is in use and both of the'cutters in operation, a crank pin or aXle having one portion of a greater diameter than the other, may have both its surfaces trimmed at the same time or may only have one of the surfaces trimmed. Of course the device may be used for trimming a crank pin or axle having an even diameter throughout its length and when used for trimming an axle or pin of this character the cutter which is not in use will be released from the feed means and prevented from having movement longitudinally of the work.

In order to transmit movement to the tool-carrying bars there has been provided operating means driven from the inner cylinder as the outer cylinder rotates. The spiral or worm gear 4 carried by the shoulder 3 of the inner cylinder meshes with a spiral gear 22 which is carried by ashaft 23 extending radially from bearing 24. This spur gear 22 has one face provided with bevel teeth 25 which mesh with the bevel teeth of the gears 26 and 27 which are rotatably mounted upon a shaft 28 extending through the bearing 24 of the shaft 23 and rotatably mounted in bearings 29. This shaft 28 is hollow for a portion of its length and is provided with side slots to receive the end portions of keys 30 and 31 carried by a pin 32 which fits into the hollow shaft 28 and is provided at its outer end with a knob or head 38 by means of which the pin 32 may be moved longitudinally of the shaft 28 and selectively move the keys 30 and 81 into and out of the sockets 34 and 35 formed respectively in the gears 26 and 27. It will thus be seen that by means of this construction the gear 26 or the gear 2'? may be locked to the sha't 28 or both of these gears may be left free. When the gear 26 is locked to the shaft 28 this shaft will be rotated in one direction and when the gear 27 is locked to i its rotation will be in an opposite direction. The direction in which this shaft 28 rotates can therefore be readily controlled so that the tool-carrying bars may be caused to move longitudinally of the axle in the desired direction. The forward end portion of this shaft 28 is free and carries a worm 36 so that as this shaft 28 is rotated rotary movement may be transmitted to a shaft 37 which extends radially of the outer cylinder and extends through abearing 38 extending from the arm 17. The inner end of this shaft 3? is mounted in a thrust bearing 39 carried by the outer cylinder adjacent the inner end of the arm 17 and upon the lower end portion of this shaft 3'?" there has been provided a worm gear to which meshes with the worm Therefore, theshaft S? will be rotated at a reduced rate of speed from t shaft 28 and the shaft 28 in its turn will 'Je slowly rotated as tlte outer cylinder turns about the inner cylinder and the gear 22 is slowly rotated by the worm 41- carried by the rear end portions of the inner cylinder.

In order to impart longitudinal sliding movement to the tool-carrying bars 15 and 16 and control the sliding movement of these bars there has been provided gears 41 and 42 which engage the teeth of the rack bars 20 carried by the tool bars. The gear 41 its loosely upon the shaft 5'? and is provided with clutch teeth 13 for engagement by a clutch member a l which is slidable longitudinally upon the shaft 37 and the gear 12 is also provided with clutch teeth 4:5 for engagement by a clutch member 4.8 which may be slid longitudinally of the shaft 3?. These clutches turn with the shaft 3? and it will thus be seen that by proper adjustment of the clutches the gears ll and 4:2 may be both caused to rotate with the shaft or only one of these gears caused to rotate with it. Therefore, the tool-carrying bars may be both caused to move longitudinally of the axle to be trimmed or only one of them and the other left stationary and out of the way. It will be further noted that the gear 42 is carried by a sleeve 1? lll) l Ju

which is rotatable upon the hollow shaft 3? and is held against longitudinal movement upon this shaft by collars 48 positioned at opposite sides of the bearing 38. A pin vor stein 431-), which is similar to the stem 32, extends longitudinally through the hollow shaft and at its inner end is provided with a key which may be moved into and out of clutching engagement with'the gear when the pin 49 is moved longitud nally. Therefore, this gear 4.0 may be loci-red to the shaft 37 so that the shaft will be rotated with the gear or the shaft may be released from the gear. When this shaft is released a wrench may be applied to the outer end portion of the shaft 37 or to the outer end portion of the sleeve 4i? and the sleeve or the hollow shaft rotated with the clutches n. and 4-6 properly positioned to permit the gear 41 or the gear l2 to be rotated and the tool-carrying bar 15 or 16 manually adjusted to position the cutter in proper relation to the work. By this construction the two cutters may be positioned properly for a cutting operation or one of them may be positioned for a cutting operation and the other moved rearward y out of the way. After the prop er adjustment has been made the proper clutch may be moved into an operative position or both of these clutches brought into proper engagement with their gears and the stem 4.9 can then be moved into clutching engagement with the gea 1-0. Rotary movement can then be transmitted from the shaft 528 to the shaft and one or both of the tool-carrying bars moved longitudinally of the axle as the outer sleeve rotates about the inner cylinder.

When this machine is in use the forward end portion will be screwed onto the end of an axle or crank pin to be trimmed or a suitable axle or pin-engaging member will be screwed, into the forward end portion of the inner cylinder and engage with the free end of an axle or crank pin. The operating motor will be connected with the drive v haft 5 and when the motor is start ed this shaft 5 will be rotated. Rotary movement is transmitted from the shaft 5 to the ouior cylinder through the medium of the gears 8 and as this outer cylinder rotates the gear 22 will be rotated by the threads l of the inner cylinder. The clutch gears 27 are rotated by the gear 22 and by proper adjustment of the stem 82 the shaft may be caused to rotate in the desired direction. As this shaft 28 rotates rotary movement will be transmitted to the gear 40 by means of the worm 36 but this rotation will be at a greatly re duced rate of speed. The cutting tools will be connected with the cutter bars .15 and 16 and if a cranlr pin or axle having portions of separate diameters is to be trimmed the two bars will be moved to position the cutting tools carried thereby in proper relation to the axle or crank pin and the stem 49 and clutcl cs 44.- and 46 then moved into an operative position so that the shaft 37 and ears ll and 42 will be rotated to impart longitudinal sliding movement to the tool-carrying bars the outer cylinder rotates and moves the tools about the axle or cranl-z pin. j It will therefore be seen that as these tools move about the axle or cranlr 7 pin and trim the same they will move longitudinally of the axle at a slow rate of speed and will therefore be properly fed along the axle to provide a continuous cutting action. After a out has been made in one direction the stem or pin 32 can be adjusted to change the direction in which theshaft 28 rotates and a cut made as the tool-carrying bars return towards the original position. It is, of course, obvious that if desired the stem 49 may be drawn outwardly to release the shaft when the end of a cut is reached and the cutter bars manually re turned to the original position before a sec-. ond cut is made. If an axle is to be trimmed which is v of an even diameter throughout its length only one of the tool-carrying bars will be used and therefore one of the bars will. be pushed rearwardly to a position where it will not interfere with the turningof the outer cylinder, and the other tool-carrying bar moved into proper engagement with the axle. The clutch for causing longitudinal movement of the first bar will be left free of its gear 1-1 or 42 and the clutch for the gear of the second bar will be moved to an operative position with respect to its gear. It will therefore be seen that, when so set, the first bar will remain stationary and the second tool-carrying bar will be moved longitudinallyof the axle for a cutting operation as the outer cylinder rotates about the inner cylinder.

ll hat is claimed is l. A machine of the character described comprising; a work engaging member, a body rotatable upon said won; engaging member,

a tool carrier slidable longitudinally of said body, a rotatable shaft carried by said body,

a rack carried by said tool carrier, a gear rotatable about said shaft and meshing with said rack, clutch means for locking said gear to said shaft and movable into and out of an operative position, and means carried by said body for imparting rotary movement to said shaft and receiving rotary movernent from said work engaging member as said body rotates about the work engaging member.

A machine of thecharacter described comprising a work engaging member, a body rotatable about said work engaging mem her, a drive shaft rotatably carried by said work engaging member and disposed ly tl'lereof, an internal gear provided in said &

7 by said body and driven from said work engaging member during rotation of the body about the work engaging member.

3. A machine of the character described,

comprising a work engaging member, a body rotatable about said work engaging memher, a worm thread extending about said work engaging member, arms extending radially from said body in spaced relation longitudinally thereof, a tool carrier slidably carried by said arms for movement longitudinally of the body, a rack extending longitudinally of said tool carrier, a driven shaft extending longitudinally of one of said arms, a gear adapted to rotate with said shaft and meshing with said rack for imparting longitudinal sliding movement to the tool carrier, and means carried by said body for imparting rotary movement to said shaft, said means including a Worm gear having its teeth engaging with the worm thread for receiving rotary movement therefrom as the body rotates about the work engaging member.

4. A machine of the character described comprising a work engaging member, a body rotatable about said work engaging member, arms extending radially from said body, a tool carrier slidably carried by said arms for sliding movement longitudinally of the body, a shaft extending longitudinally of one of said arms and rotatably mounted, a gear loose upon said shaft and meshing with the rack of said tool carrier to impart sliding movement to the tool carrier when rotated, a clutch carried by said shaft and moved into and out of operative engagement with said gear, and means operated from said work engaging member for imparting rotary movement to said shaft during rotation of the body about the work engaging member.

5. A machine of the character described comprising a work engaging member, a body rotatable about said work engaging member, arms extending from said body, toolcarrying bars slidably carried by said arms, racks carried by said bars and preventing rotation of the bars, a rotatably mounted driven shaft, a gear loose upon said shaft and engaging the rack of one of said tool carriers, a sleeve loose upon said shaft, a gear carried by said sleeve and engaging the rack of the other tool carrier, clutches slidable upon said shaft and individually movable into operative engagement with their cooperative gears to selectively lock the gears to the shaft, and means carried by said body for imparting rotary movement to the shaft during rotation of the body, said means being driven from said work engaging member.

6. A machine of the character described comprising a work engaging member, a body rotatable about the work engaging memberfatool carrier slidably carried by the body for movement longitudinally thereof, a rotatably mounted driven shaft carried by said bod means carried by said shaft for transmitting movement from the shaft to said tool carrier, a second shaft rotatably carried by the body, a gear loose upon the first shaft, a s cm extending longitudinally through the first shaft and slidable longitudinally therein and having means for engaging the gear and locking. the gear upon the shaft when the stem is moved in one direction, means carried by the second shaft for engaging the gear of the first shaft and imparting rotary movement to the same when the second shaft is rotating, and means operated from the work engaging member for imparting movement to the second gear during rotation of the body about the work engaging member.

7. A machine of the character described comprising a work engaging member, a body rotatable about said work engaging member, arms extending from said body, tool carriers slidably carried by said arms, racks extending longitudinally of said tool carriers, a driven shaft having one end rotatably connected with said body and its outer end portion rotatably supported by a portion of one of said arms, a sleeve loosely fitting about said shaft and held against longitudinal movement, a gear looseupon said shaft and engaging the rack of one of said tool carriers, a gear carried by said sleeve and engaging the rack of the other tool carrier, clutches keyed to said shaft between the gears and separately movable into and out of operative engagement with their adjacent gears, a second shaft, means for transmitting rotary movement from the second shaft to the first mentioned shaft, and means for imparting movement to the second shaft, said means being driven from the work engaging member during rotation of the body about the work engaging member.

8. A machine of the character described comprising a work engaging member, a body rotatable about the work engaging member, a tool carrier slidab'ly carried by the body for movement longitudinally thereof, a worm thread extending about the work engaging member, means for imparting sliding movement to the tool carrier during rotation of the body about the work engaging member, said means including a shaft'extending longitudinally of the body and rotatably mounted, a bearing loose upon said shaft and having astub shaft extending therefrom, a Worm gear upon said stub shaft having its teeth engaged by the Worm thread, bevel teeth extending from one face of said Worm gear, bevel gears loose upon said shaft at opposite ends of the bearing and mesh 10 ing with the bevel teeth of the Worm gear a stem slidable longitudinally through said I shaft and keys carried by said stem and adapted to move into and out of loeklng engagemeut with the gears upon the shaft to individually lock the gears upon the shaft 1 CLAUDE EDWARD MARSH.

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