Патент USA US2123649код для вставки
July 12, 1938.‘ pomsman sonme I R. AND |_. (Jun MILLING IIH MACHINE DRIVE ' v Filed Sept. '1, 1937 ‘ :s'sneets-sheet'l ' zrzvénzlor fink/(1L . 06% July 12,- 1938. ' R, L, GOTTA 2,123,649 COMBINED BORING AND MILLING MACHINE DRIVE Filed Sept. 1, 1957 /7 + fllllllllllllllllll ‘mlllmnvmwmlln'nmmn IIIIII_~v mum" s Sheets-Sheet 2 I July 12, 1938; R, ._, GOTTA ' .‘2,l23,649 COMBINED BORING AND-MILLING MACHINE DRIVE Filed Sept. 1, 1957 ‘5' (9 ia ' EI ' 3 Sheets-Sheet, 3 ) *9 - Q _59 \ i “2) a ~35 1&4 - / 40 A, A4128 ' ‘*9 40/ § % V ‘ Patented July 12, 1938 2,123,649 } UNITED STATES PATENT OFF-ICE ; 3 2,123,649 COMBINED BORING.‘ AND mums . , , momma nmvn ,Ralph L. Gotta, Philadelphia, Pa; assig'llol' to 'William Sellers 8;‘ Company, Incorporated, Philadelphia, Pa., a corporation of Pennsyl vania Application September‘ 1, 1937,"Serial No. 162,023. 8 Claims. (01.29-26) ‘This invention relates to machine tools, and 'struction shown in the accompanying drawings more particularly to a drive for controlling the wherein, for the purposeof illustration, I have several movements of the various operating parts shown a preferred embodiment of my invention of machine tools such as horizontal boring and milling machines. Such‘ machines usually com prise a bed or work support ‘upon. which is mount ed for longitudinal movement a saddle which, in turn, bears a table mounted for transverse movement.‘ Columns arise from opposite ends _10 of the bed, one carrying a boring head and the other an outboard support for the boring spindle. The head and outboard support are vertically shiftable upon their respective columns and the head carries a spindle, or spindles, which must 15 be both rotated and longitudinally shifted. Since the spindle rotation and traverse of one of the movable elements must takeplace simultaneously, separate driving transmissions must be provided to take care of these operations. The transmis and wherein: ' ‘ ' Fig. 1 is a side elevation of’a combined boring and milling machine, embodying a drive con structed in accordance with my invention; Fig. 2 is a diagrammatic illustration of the transmission mechanism’ employed; . Fig. 3 is an enlarged sectional view through the ~unidirectional drive; and I Fig. 4 is a section on line 4—4v of Fig. 3. Referring now more particularly to the draw ings, the numeral It generally designates a base upon which is mounted for longitudinal move ment a saddle H and table l2.- Mounted at' opposite ends of the base are columns i3 and it upon which are mounted for vertical movement a boring head l5 and an outboard support It. sion governing the rotation of the spindle must _ The head supports a driving motor l1 and mounts be made reversible toenable use of right or left ' a spindle, or spindles, It for both rotation and longitudinal movement. Contained within the hand cutters, taps or thelike, and the transmis sion controlling the spindle feed must derive its head is a speed control transmission unit I9 driv power from the spindle itself for, obviously, in ‘en from the motor through a reversing gearing 20 tapping, thread-cutting operations and the like and driving spindle-operating units Ito and I8?) 25 selectively connectable to the spindle by a clutch the rotative speed of the spindle must be .accu rately correlated to the speed at which the spin- ' I8c having'a neutral point. Likewise contained die is fed. Furthermore, the spindle feed must in the head and driven from the unit lab is a be reversible simultaneously with the spindle in feed control transmission 2| driving, through a order that tools such as taps may be properly reversing gear 22, the spindle feed screw 23. The 30 withdrawn. It will be seen that if this spindle output shaft 24 ofthe feed control transmission feed transmission is used to control the feeds of drives a‘ vertical lay shaft 25 which, as in general the head, saddle and table each time that the constructions, is splined to permit vertical move spindle feed is reversed or the direction of rota ment of thehead. In the base of the machine tion of. the spindle reversed, the direction of . a casing 26v is provided into which the lower end 35 operation of the three remaining units would be of the shaft 25 extends, and in this casingare _ .likewise reversed, with the result that control disposed a reversing gear 21 controlling rotation ' handles utilized in connecting these parts with of the screws'29 and 29 ‘which control vertical the feed transmission‘ will be meaningless as to movement of the head and outboard- support re position, a given position at one time causing feed spectively and a reversing gear 30 which, through of the‘ associated unit in-one direction and at clutches 3| and 32, controls the operation of, the I another time feed of the unit in the opposite “saddle feed screw 33 and the table drive shaft Y _ direction. An important object of this invention is the provision of a construction such that the feed transmission controlling the feed of the'spindle may likewise be employed‘ in operation of the _ headftable and saddle while still enabling the 34 operating the drive nut‘35 engaging the table , feed screw 36. These elements in the main are merely conventionally indicated, since they may be ofrany usual and well-known construction. Bevel gear 31 secured to’the lower end of lay shaft 25 meshes with a pair of oppositely faced use of levers the positions of which will indicate bevel gears 38, loosely mounted on a shaft 39 50 the direction of movement of the part with which _ and each provided with an overrunning clutch they are associated. '- 49 through which shaft 39 can be driven in ‘one ~ Another object of the invention'is the provision‘ direction only. It will be obvious that si'nce'these of a_ construction su'chthat a single pilot wheel may be utilized in feeding of any‘ of the spindle, 55 the head, the table or the .saddle, and when employed in feeding the head, table or saddle running in the predetermined unidirection with out regard to the direction of operation of ‘the may be operated ineither direction to provide spindle feed from which this drive is ‘derived. ‘It . movement of the affected part in the direction is thus possible to utilize a _Singlej;§§?_ unit in selected by its individual control lever. ‘ 90 gears 39 are oppositely driven by gear 31, shaft 39 will be, driven from the bevel gear which is I These and other objects I attain by'the con operation of the various movablegeléments of the machine. ‘- - 00 2,128,649 It will be obvious that, since shaft 39 is uni directional and controls the operation of the vari ous movable elements including head I 5 and outboard support I6, which may be considered as a unit, the saddle II and table if, the con ‘ trol levers 42, 43 and “controlling respectively the saddle I I, table l2, and head l5, may be so positioned thata vmovement ‘in a, given direction thereof will cause a movement of the associated 10 part in the same direction, and this-without re gard towhether or not the reversible transmis sion ‘from which 'theyvderive their power is op erated in one or'the other direction. _ The output shaft 24 of the feed unit, in addi 15 tion to being movable through its‘motor drive, is transmission having an output shaft controlling the axial movement of‘the spindle, a second shaft, an irreversible driving connection between said second shaft and the output shaft of the transmission and a reversible driving connection 5 between the first-named shaft and a feeding means for said head. ' , 4. In a machine tool. embodying a vertically movable head, an axially movable spindle car ried by the head, a reversible‘ variable speed 10 transmission having an output shaft controlling ‘the axial movement-of the spindle, a second shaft, an} irreversibe driving connectionv between said second shaft and the output shaft of the trans mission, a reversible driving connection between 16 movable throughia pilot wheel 4| which may be the ?rst-named shaft and a feeding means for selectively engaged therewith through the usual said head, and'means to manually operate the clutch mechanisms, not herein disclosed. Pilot output shaft of the transmission. wheel ll, may, therefore, be employed in opera 5. In a machine tool embodying a vertically tion of any of the movable elements since the ‘movable head, an movable spindle car- 20 output shaft 24 “controls, throughthe several ried by the head, a horizontally movable saddle clutches and reversing mechanisms 2.1, 3|, and and a table movable transversely upon the sad 32, the operation of each of the movable ele dle, a reversible variable speed transmission hav ments. This feature is of considerable advan- ‘ ing. an output shaft, a feeding means for said 25 tage in the type of machine illustrated in that spindle, a reversible connection between the 25 the operator may set the control levers for move output shaft of the transmission and said feed ' ment of the selected part'in the selected direc ing means, a second shaft, an irreversible driv tion and, without reference to'the direction of ing connection between said second shaft and movement of the pilot. wheel all, may shift the the output shaft of , the transmission and a re 30 selected part in a selected direction. If, for ex-, , versible driving connection between the ?rst- 80 ample, while standing close to his work he is’ ' named shaft and feeding means for each of said able to reach an arm of the pilot wheel but is head, said saddle and saidtable; unable to move that arm through a suflicient arc 6. In a machine tool embodyingya vertica to enable him to grasp a further arm, he may movable head, an axially movablev spindle car oscillate the pilotwheel and thereby produce a ried by the head, a» horizontally movable saddle.35 continuous movement of the affected partin the‘ and a table movable transversely upon the sad dle, a reversible variable speed transmission hav Since the construction of the various elements ing an output shaft, a feeding means for said may be considerably varied and the arrangement spindle, a reversible connection between the out of the transmissions and transmitting shafts put shaft of the transmission and said feeding 40 may likewise ‘be varied to suit any-particular set means, a shaft, an irreversible driving connec- ' of conditions for which the machine must be. tion between said shaft and the output shaft of constructed, I do not wish to be understood as the transmission, a reversible driving connection selected direction. ‘ ' . ~ limiting myself to .the ' particular ‘arrangement between‘ the ?rst-named shaft and 1 feeding therein illustrated except as hereinafter claimed. means for each of said head, said saddle and said 45 table, and means ‘to manually operate the out 1. In a machine tool embodying-a vertically put shaft of the. transmission. . movable head, an axially movable spindle car 7. In a machine tool embodying a'vertically ried by the head,‘a horizontally movable saddle movable head, an axially movable spindle car and a table movable transversely upon the saddle, ried by the head, a reversible ‘variable speed 5” a reversible variable speed'transmissionhaving transmission having an output shaft, a feeding an output shaft controlling .the axial movement means for said spindle, a reversible connection of the spindle, a second_'- shaft, an irreversible between the output shaft ‘of the transmission driving connection between said second shaft and said ‘feeding means, a second shaft, an ir 55 and the output shaft of the transmission and a ' reversible driving "connection ‘between said sec- 55 reversible drivin connection between the ?rst ‘0nd shaft and theoutput shaft-of the transmis na'med shaft an feeding means for each of said sion and a reversible ‘driving connection between head, said-saddle-and said table. the ?rst-named shaft and a feeding means for 2. In amachine tool embodying a vertically said head. ' 00 movable head, an axially movable spindle carried 8. In a machine tool embodying a vertically 6p by the head, a, horizontally movable saddle and a movable head, an axially movable spindle car table movable transversely upon the saddle, a ried by the head, a rave ble variable speed, reversible variable speed transmission having an transmission having an out ut shaft, a feeding output shaft controlling the axial movement of means for said spindle, a r versible connection the spindle, a shaft, an irreversible driving con between the output shaft of the transmission and ‘5 nection between said shaft and-the output shaft said feeding means, a second shaft, an irreversi of the'transmission, a reversible driving connec ble driving connection between said second shaft tion between theilrst-named shaft and feeding and the output shaft of the transmission, a re means fc_v each of said head, said saddle and said versible driving connection between" the first table, and means to manually operatethe output named shaft and‘a feeding means for said head, to I claim: - shaft of the transmission. ‘ ' ' _ 3. In a machine tool embodying a vertically movable head, 'an» axially movable spindle car ried by the head, a reversible variable speed . and means to manually operate the output shaft of the-transmission. _ _ RALPH! L. CO'I'I‘A.