C, E, WAN NORMAN, MILLING MACHINE, APPLICATION FLED AN, 22, 190, Patented June 12, SHEETS-SHEET 1. is a 12, WITVESSES. -é (?

Transcription

1 1,229,352, C, E, WAN NORMAN, MILLING MACHINE, APPLICATION FLED AN, 22, 190, Patented June 12, SHEETS-SHEET 1. v NS \SS : is a 12, WITVESSES -é (?4-le-4 Szé-- 47 TORNEY.

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3 1,229,352. C. E. WAN NORMAN, MLING MACHINE, APPLICATION FILED AN, 22, Patented June 12, 1917,... 3 SHEETS-S HEET 3. v SY w Y: s w f w N a S. N - X assa s a WZZAVESSAS --Lu (4.2/ AAVPEAW a 2, ZOA, , Gé, 477OAAWA. 1

4 UNITED STATES PATENT OFFICE. (CSARES E WAN NoRMAN, OF SPRINGFIELD, MASSACHUSETTS, ASSIGNOR, BS ESNE ASSIGNMENTS, To VAN NORMAN MACHINE TOOL company, or SPRINGFIELD, MASSACHUSETTS, A CORPORATION OF IMASSACEUSETTS, MILLING-MACHINE. 1,229,352. Specification of Letters Patent, Application filed January 22, Serial No. 539,463. Patented June 12, To all whom it may concern. Be it known that I, CHARLEs E. WAN NoR Work carrier or table which is associated MAN, a citizen of the United States of with the base, and which adjustable head America, and resident of Springfield, in the carries externally thereof a holder for a county of Hampden and State of Massa tool carrying spindle which is revolubly ad chusetts, have invented certain new and use justable on a horizontal axis transversely of ful Improvements in Milling-Machines, of the head and on a plane parallel with the act which description. the following is a full, clear, and ex line of movement of the head, such milling machine, furthermore, embodying change 0. This invention relates to milling machines speed mechanism, carried in the head, in and has for its object the provision of cer driving connection with the spindle and tain improvements in the change-speed gear means for driving the change speed mecha for adapting the machine to be adjusted, so nism irrespective of whatever position the as to rotate the milling cutter at a great va head containing the latter may have, and 15 number riety of of different parts. speeds, with a minimum which primarily includes a driving shaft non-affected as to its driving capabilities The invention has, furthermore, for its by reason of any movements of the head. object the provision of a casing within In the present instance, the milling machine which the change-speed gears are disposed comprises base 10 on which is movably and which is what may be considered dirt Supported a knee 11 which is guided on proof and serves at the same time as a lu Ways 12 and may be adjusted by a raising bricant-containing chamber, so that all un guards necessary may wear be due avoided. to absence of these safe Ways screw on The which knee the has work at carrier its upper or sup face port (indicated in a general way by 15). Further objects of the invention will here may be adjusted relatively to the tool-spin inafter appear and the means for their at dle, claims. tainment be particularly pointed out in the construction. all these elements being of well-known It is to be remembered, that the part to The invention has been illustrated in the which the numeral 15 is directly applied, accompanying drawings in which similar and on which the work to be operated on characters denote similar parts, and i by the machine is directly mounted, has its which- - moyement, as imparted by a usual form of 85 Figure 1 is a side view of a milling ma feed mechanism therefor, at right angles to chine embodying my improvements. the Fig. 2 is a horizontal section of the next line referred of movement to. of the head 20 to be change-speed-containing case and also the Movably held on top of the base 10 is the tool-spindle which latter is shown horizon head 20 constituting a casin and guided 90 in tally Fig. disposed 1. rather than angular as shown by ways 21 for horizontal adjustment and containing the change-speed mechanism of Fig. the gear 3 is casing. a vertical longitudinal section whereby the tool-spindle of the machine may be actuated at many different speeds as will The lines 2-2 on Fig. 3, and 3-3, on be apparent by an inspection of Figs. 2 and 95 Fig. 2 indicate the planes on which the said 8 in which this change-speed gearing is tively sectional taken. views, Figs. 2 and 3 are respec clearly shown. Here it will be seen that the tool or cutter C is held in a quill: 25 Fig. 4 represents a perspective view of a which is journaled in bearings 26, 27 of part of the speed-changing mechanism, and Swivel-head 28 and which also carries a casing. Fig. 5 is a top view of the cover for said bevel gear 29 in constant mesh with the 100 bevel pinion 30 secured to a horizontally This invention is comprised in a milling disposed shaft 31. This shaft is journaled machine in which a head or ram' is mount in hardened bearing sleeves 32 provided for ed on a base or column for movement hori that purpose at the forward end of the zontally adjustably on a line at right an movable head 20, and the swivel-head 28 gles to the longitudinal movement of the above referred to may be adjusted to any position between a horizontal and a perpen

5 a 1229,862 dicular around the axis of the shaft 31 so same is in engagement with. From the fore that the bevel-gear 29 and pinion 30 will going, it will be seen that the shaft 62 can maintain proper drivin relationship irre be rotated from the shaft 43, above referred spective of the position t e tool-spindle may to, at six different speeds, three of which, depend upon the gears 59,60 and 61, while 70 (occupy. Inasmuch as the particular manner in on the other hand, the gear 54 itself can be which the tool-spindle may be adjusted lon rotated at two different speeds by virtue of gitudinally for different kinds of work and the clutch connection 50 which will bring also whereby the wear in the bearings there the shaft 43 in coöperation with the spindle 0. for may be taken up, forms no feature of 53 either through the gear 46 and pinion 51, 75 the present invention, any reference thereto or else through the pinion 47 and the in this case will be omitted. gear 52. The shaft 31 is the particular element Means are provided for operating or shift which, through the intervention of varia ing the clutch spool 50 from a point ex 5 ble-speed gearing, may be driven at a num teriorly of the head 20, these means consist 80 ber of certain different speeds from the prin ing substantially of a roll-lever 63 (see Fig. cipal driving shaft of the machine, which 3) secured to the lower end of the spindle 64 shaft is indicated herein by 35 and jour which is journaled in a bearing 65 and which naled in bearings 36, 37 provided in the carries at its upper end and exteriorly of the 20 arms of a bracket 38 rigidly secured near casing an actuating arm 66, the free end of 85 the upper portion of the base 10. The shaft which carries a spring-actuated pin carries the main driving pulley P to adapted to enter any one of a series of three which power may be imparted from any recesses 68, 69 and 70. Of these, the first convenient source, and it also carries a bevel one named, 68, will maintain the spool in its 25 gear 39, the hub 39 of which (see Fig.2) central or neutral position, so that its clutch 90 is journaled in a bearing 40 secured to the teeth are free from engagement with either side of the movable-head 20. In order to. the pinion 47 or the gear 46, while when cause the bevel gear 39 to maintain its re the arm is shifted, so as to bring the pin 67 lation to the movable-head 20 and the bear into the recess 69, the spool 50 will be 30 ing 40, the hub 39' carries at its outer end a brought into coaction with the pinion 47; collar 41 whereby said hub will be held and when the pin 67 enters the recess 70, the within the bearing 40. spool 50 will be coöperative with the clutch Power is transmitted from the main driv teeth on the gear 46. ing shaft 35 through the bevel gear 39 to a Again referring to the yoke Y, the means 35 similar gear 42 which is mounted at the whereby the gear 54 is moved laterally, t outer end of a shaft 43 which is journaled consists substantially of a slide 71 compris. in bearings 44 and 45 of the movable head ing a pair of lugs 72 which straddle said 10 and which carries a pair of loose speed gear 54, and said slide 71 is provided with gears 46 and 4 provided with clutch mem an upward extension 73 on which a button 40 bers 48, 49, respectively, which latter are 74 is movably supported. The slide 71 is sup adapted to be engaged by the opposite faces ported on a guide shaft 75 held in suitable of a clutch spool 50 according to which one lugs in the head which has an opening 76 of the two gears it is desired to actuate in through which the several parts of a change conjunction with the driving shaft 43. speed gear may be inserted, and, which is 45 The loose gears 46, and 47 are in constant norinally closed by a slotted cover 77 (see mesh with a pinion 51 and a gear 52, re also Fig. 5) having a series of recesses or spectively, which are firmly held on a shaft depressions 78, 79 and 80 into which the 53 journaled in suitable bearings in the cas button 74 may seat itself to keep the slide ing or head 20. The pinion 51 is also in en 71 in its adjusted position, these recesses. 50 gagement with a gear 54 loosely mounted on being placed so as to bring the gear 54 a spindle 55 the ends of which are pinned or into proper running relationship with either otherwise fixed in a yoke Y comprising one of the gears 59, 60 or 61 above referred arms 57 and 58 which swing about shaft 53 to. Now, inasmuch as it is evident that and between which the gear 54 is adapted if the spindle 55 should maintain its posi 55 to be moved laterally of the head into en tion permanently, as shown in Fig. 3, the gagement with any one of a series of change gear 54 would naturally be shifted out of gears 59, 60 and 61, respectively, without, mesh with the remaining gears 60 and 61 however, going out of mesh with the pinion by virtue of its sliding movement on said, spindle 55, means are provided whereby the 51 before mentioned. w 60 It will be understood that the gears 59, yoke Y may be lowered so as to bring the 60 and 61 are different sized, so that hence gear 54 into engagement with the other and it will be understood that the shaft 62 upon smaller gears 60 and 61 and as determined which said gears are secured will be driven in the present instance by a series of abut at different speeds by the gear 54 in accord ments 81, 82 and 83 adapted to position 65 ance with whatever gear 59, 60 or 61 the the voke Y, or more particularly speaking

6 1,229,352 the arm 84 thereof, so as to bring the gear 54 into proper meshing engagement with 20 is shown as having at its underside a the other gears of the series. rack 105 in engagement with a pinion 106 In addition to the devices just described, which is mounted on a vertical stud 108 means are provided whereby said yoke may journaled in a frame and having at its be partially rotated, so as to raise said yoke lower end a worm-gear 107 in engagement to bring the gear 54 out of engagement with a worm 109 which may be rotated by 70 with the smaller gear 61, so that then said gear may be shifted laterally without be crank any suitable arm 110. means, such as for instance a 10 ing stopped by either of the two gears 60 As above stated, the movement of the head or 59 of the series. In the preferred form relative to the base will carry with it the 75 stantially thereof shown, of a pinion this mechanism 85 in engagement consists with sub bracket 40 in which the bevel gear 39 is journaled, the hub 39 of the gear being circular rack teeth 86 provided on the up keyed on the main driving shaft 35 but 5 per surface of the yoke Y, said pinion 85 movable thereon, as controlled by the posi being secured to, or forming a part of, a tion of the head, while said shaft 35 (being 80 spindle 87 journaled in a bearing 88 of the journaled in a stationary bracket 88) re head and carrying at its outer end an actu mains in its position, so that the pulley P 20 ating lever 89, the free end of which carries can be driven from a narrow, face pulley on a spring actuated pin 90 adapted to enter a counter or line shaft. Attention is called any one of a series of recesses 91, 92 or 93 at this time to the fact that while in Fig. 1, 85 (see Fig. 1) so as to prevent the yoke Y the sliding head has been moved to the left from being accidentally raised by the trans of the base almost to its extreme point of 25 its mission coöperative of power gears. between the gear 54 and extreme movement, position Fig. 2 toward illustrates the right. the head at its While, as above stated, the device thus It may be here stated that this machine 90 far described produces a variation of six has the capabilities of doing, either very different speeds between the driving shaft heavy or light work by the use of but a 35 or 43, and the gear shaft 62, 30 yet the single cutter carrying spindle, which spindle letter may be connected so as to drive the as has been clearly stated, is one located at tool-driving shaft 31 at two different speeds, the side of the head 20 near its end, and 95 this object being accomplished in the pres which is revolubly adjustable on a plane par ent instance by means of a pair of different allel with the line of movement which said 35 sized gears 94 and 95 which are normally head has relatively to the base, and which loose on the shaft 31 but may be connected movement of the head is at right angles to therewith through a clutch spool 96 keyed on but slidable on the shaft 31, so as to work the longitudinal carrier. line of movement of the 00 connect the shaft 31 either with the smaller The cutter spindle may be adjusted in a gear 94, or with the larger gear 95. The vertical position or in a horizontal position, 0 spool 96 may be thus shifted by a roll arm, (or in any oblique position between the verti 97 secured to a spindle 98 and having at cal and the horizontal, as will be apparent on 05 its outer end an actuating arm 99 (see Fig. reference to Fig. 1. 3) which may carry a spring actuated pin The fact should be appreciated that in this 100 whereby said arm may be held in posi machine the single cutter spindle is effective tion to maintain the spool either free from, for light or heavy milling work irrespective or in engagement with, either one of the of the revoluble adjustment which may be 09 gears 94 or 95 above referred to, so that given to the cutter spindle, and there is as as a matter of fact the shaft 31 is suscepti great rigidity in the driving connections ble of being driven at twelve different eontained in and bodily carried by the mov speeds from the first driving shaft 43. able head 20 when the head is projected for In order to maintain the parts in lubri a long overhang relatively to the work car 15 cated condition, the casing or head 20 also rier as when the head is withdrawn to bring serves as an oil-well or receptacle, as shown the cutter close in toward the base, as the in Fig. 3, a feature which is important mountings for the spindle driving connec inasmich as this construction is instrumen tions are constant as to their relations be tal in avoiding a great deal of wear on the tween the spindle and the adjustable head. 20 several gears, while at the same time, the Here there is never any change in torsion amplitude of such lubrication will assist in able effect in any of the driving shafts com reducing the amount of back lash to a mini prised in the spindle driving change speed mechanism, as is the case in other milling. Furthermore, while any suitable device machines having change speed gearing and 125 or mechanism may be employed to shift the where generally a cutter spindle and an movable head bodily relatively to the work auxiliary cutter spindle are required for sat on its support, I preferably employ that isfactorily Ing. performing. light and heavy mill shown in Fig. 1 in which the sliding head Many changes may be made in the con

7 1,239,852 struction and particular organization of the connecting said driving and actuating component elements of the change speed shafts, means for adjustably varying the mechanism above described, without depart distance of the tool spindle from the vertical ing from the spirit of the invention, particu face of said column, and for maintaining the is larly as to the number of speed changes same gear connections and distance relation, which may be obtained, and also the mecha between the driven and actuating shafts in nism whereby such changes are effected. any of the varied adjusted locations of tool And it is to be particularly understood spindle, in its distanced relation to the face that the invention is not to be limited to the of said column. 0 means, comprising shaft 35, pulley, P, and 4. In a milling machine, the combination bevel gearing 39, 42, for driving the shaft with a vertical base or column, of a cham 43 which enters the movable head, as such bered head or frame horizontally adjustably latter shaft may be otherwise driven. mounted on said base, a tool spindle, and a I claim:- holder therefor carried by said frame and. 1. In a milling machine, the combination, revolubly adjustably movable relatively 5 with a base or column, of a head or frame thereto on a plane parallel to the line of horizontally adjustably movable on the base, movement of said frame, an actuating shaft work holding slide adjustably mounted on supported by said frame and gear connected a vertical face of said column, a tool spindle with the tool spindle, a driving shaft sup 20 holder mounted on the frame and revolubly ported on said base, and driving means adjustable in a plane parallel with the line therefor, a driven shaft gear connected with of movement of the head, a tool spindle the driving shaft, change gear mechanism mounted in said holder, an actuating shaft connecting said driven shaft with said actu located transversely of the movement of said atingshaft, and means for adjustably vary 26 head and in gear engagement with said ing the distance of the driven shafts, the spindle, a driving shaft mounted on said actuating shaft and the cutter spindle to base, change gear mechanism interposed be gether from the vertical face of the column, tween the said driving and actuating shafts, and relative to the driving means. and means for adjustably increasing or di 5. In a milling machine, in combination, a 80 minishing the distance between the face of base, a work holding carrier, mounted for said column and the actuating shaft and horizontal movement on the base, a head spindle and for maintaining the relative horizontally slidably adjustable on the base gear connections between the driving and for movement in a plane parallel with the actuating shafts., plane of movement of the work carrier, a In a milling machine; the combination driving shaft mounted on the base, a shaft with a vertical column or base, and of a journaled in and bodily movable with the chambered head or frame mounted horizon adjustable head, gearing slidably supported tally thereon, a tool spindle and a holder and connecting the two said shafts, a tool therefor revolubly adjustably mounted on carrying spindle having a gear wheel there 63 said frame, an actuating shaft supported by on and a holder by which the spindle is said frame, and gear-connected with the tool carried, revolubly adjustably mounted on spindle, a driving shaft supported on said the said head for movement on a plane par base transversely relatively to the actuating allel with the line of adjusting movement of shaft, a driven shaft supported within said said head, an actuating shaft and a gear 85 frame, gear mechanism connecting said mounted thereon, which is in constant en driving shaft and said driven shaft, change gagement with the tool spindle gear, change gear mechanism connecting said driven shaft gear mechanism carried in the head and in with said actuating shaft, means for variably terposed between the said second named adjusting the distance of said tool spindle shaft and said actuating shaft, whereby the 50 from the vertical face of said column and for actuating shaft and the tool spindle may be maintaining the gear connected relation be driven tween the said driven and actuating shafts, 6. In at a milling different machine, speeds. in combination, a during the positioning of the tool spindle at base, a hollow, head horizontally slidably ad any greater or less distance from the vertical justable on the base, a work carrier, movable 65 face of said column. on a plane parallel with the line of move 3. In a milling machine, the combination ment of said head a tool carrying spindle, with vertical column or base, of a chambered and a holder, in which it is journaled, revo head or frame horizontally adjustably lubly mounted on the side of the head for mounted on said base, a tool spindle holder adjustment on a PE parallel with the line 60 revolubly adjustably supported on said of movement of said head, an actuating frame, a driving shaft supported on said shaft mounted transversely of the line of base, a driven shaft gear-connected with said movement of the frame, and gearing con driving shaft, an actuating shaft supported necting said actuating shaft and too spin in said frame and gear connected with the dle, change gear mechanism mounted in and 65 said tool spindle, change gear mechanism bodily movable with said head, and connect 7) O

8 O ,229, driving ing with the said said actuating change shaft, gearing. and means for gear mounted at the diagonally opposite 7. A milling machine, comprising in com corner and connected to be driven by the bination, a base or column, a main drive main drive shaft, and a gear transmission on shaft mounted wholly on said column, a the frame to transmit the power from said work holding slide, and a frame adjust gear to said holder under approximately able to overlap the slide in various amounts, constant conditions upon variations in the said frame having mounted thereon at the overhang of the frame and in the angular outer end a tool spindle holder, adjust adjustments of the tool holder. able in a plane at a right angle to the 9. A milling machine, comprising in com plane of the slide, to hold the tool in va bination, a base or column, a main drive rious langular positions, shafts and gears shaft mounted wholly on said column, a to drive the holder from the main drive work holding slide, and a gear box having shaft, one of such gears having a slidable change gear transmission therein, said gear driven connection with the main drive shaft, box being adjustable on the base for varying the milling machine being characterized by overhanging amounts with respect to the the said elements to adjust the tool holder in work slide, a rotatable tool holder adjust two planes in combination with the said ele ably mounted for different angular positions ments to drive the tool holder from the main at the outer end of the gearbox, the driving drive shaft with minimum torsional strains. gear of said transmission being located at 8. A milling machine, comprising in com the inner end of the box and feathered to the bination, a base or column, a main drive. main drive shaft, all for the purpose de scribed. W shaft mounted wholly on said column, a work holding slide, and a frame adjustable Signed by me at Springfield, Mass, in to overhang the slide in various amounts, presence of two subscribing witnesses. said frame having mounted thereon at an CHARLES. E. WAN NORMAN. outer overhanging corner a tool spindle Witnesses: holder angularly adjustable for the work, a G. R. DRIscoLL, WM. S. BELLows