US954639A - Gearing for metal-working machines. - Google Patents

Description

Patented Apr. 12, 1910.

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H. M. LUCAS & 3. B. GREEN. BEARING FOR METAL WORKING MACHINES,

APPLIOATIQN FILED JULY 31,1909. 954,639.

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GEARING FOB. METAL WORKING MACHINES.

APPLICATION FILED JULY a1, 1909.

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UNITED STATES PATENT OFFICE.

1L LUCAS AND JAMES B. GREEN, 0]? CLEVELAND, OHIO, ASSIGNORS TO LUCAS MACHINE TOOL COMIANY, OF CLEVELAND. OHIO, A PARTNERSHIP.

HENRY GEARING FOR METALWORKING MACHINES Specification of Letters Patent. Patented Apr. 12, 1911* Application flied July 31, 1909. Serial No. 510,577.

.nected and operating with the illustrated, -wherein Fi the frame or T 0 all whom it may concern; Be it known that we. nNnY M. LUCAS and James B. GREEN, citizens of the United States, residing at Cleveland, in the county of Guyahoga and State of Ohio, have invented certain new and useful Improvements in Gearing for Metal-Working Machines, of which the following is a specification.

This improvement relates to feed mechanisms for imparting a variable speed feed motion forwardly or backwardly as may be desired, combined with means directl conevices throu h which the feeding is accomplished for e ecting a nick return or reverse/motion through said feed devices'to any art or mechanism actuated therefrom, an to accomplish this quick return in either of the two feeding directions, according as the feed may be set for operating either forwardly or backwardly.

In the drawings accompanying and forming part of this s embodiment of a orm of our invention is re 1 is a central vertical section throng the feed driving mechanism of a borin machine; Fig. 2 is an end view looking at ig. 1 from the right hand end; and Figs. 3 to 6 inclusiye illustrate four different settings'of the reversing ecification a practicable 23 which is in continual mesh with miter wheels 24, 25, which are loose upon an intermediate drivmg shaft 26, which shaft has a bearing within the sleeve 15 at one end and within the hub 27 of a gear wheel 270, which hub has a bearing 28 in the frame of the machine. Between the mitergcars 24 and 25 there is splined u on the shaft 26 a clutch member 29 whic by being moved to a position centrally of the miter gears 2 1, 25, will permit the shaft 26 to run idly with respect to the shaft 17. The clutch member 29 t is provided at each of its ends with clutch-engaging faces adapted to mate with clutch-engaging faces upon the miter gears,

,so that upon movement toward either of these miter gears and into such a position that the clutch faces will engage, that particular miter gear which is so engaged will drive the miter gear 23 and consequently the shaft 17, thus controlling the direction of rotation of theshaft 17 relative to the shaft 26 without changing the relative speed, this portion of the mechanism being for the purpose of reversing the direction of rotation of the shaft 17 in respect to the shaft 26. The clutch member 29 is controlled by means of a rocker 30 mounted upon a shaft 31 which carries a handle 32 for its actuation. The handle 32 and rocker 30 when the mechanism. clutch member is in active position will lean The power will be received from what in the direction of clutch engaging movewill herein be termed the main driving shaft ment and by gravity and inertia will hold 10, which has upon it a,sprocket wheel '11 imparting motion by means of a chain 12 to a sprocket wheel 13, the hub 14 of which wheel is mounted upon a sleeve 15 supported in a bearin 16 o the machine frame or housin 'T e sleeve will be held from ro-' tation y some suitable means, as for instance a set-screw. The hub 14 will be prevented from longitudinal movement in one direction by means of a head upon the sleeve and from movement in the other direction ply means of a suitable washer or collar. In

18 present construction the variable speed etc. is to be applied to a feed shaft or feed driver 17, which has a suitable bearing in housing and has fast upon it a gear wheel 18 in mesh with gear wheels 19 and '20 upon shafts 21 and 22, which,

ments to a. boring ,mevehine, if the invention is used in connection ith a boring machine. The shaft 17 has fast upon it a miter gear upon. the

q withthe shaft 17, W111 impartvarious feed movethe clutch member in the position into which these same parts have shifted it.

The shaft 26 carries at one end a clutch member 33 which has clutch-engaging faces adapted to mate with clutch-en aging faces hub 27, andupon the on itudinal movement of the shaft 26 the clutcfiii en- Eagement between the member 33 an the u 27 will be eifecbed. In Figs. 1, 3 and 5 the shaft and clutch member 33 are shown as having been moved toward the left, which brings the intermediate driving shaft 26 into, gear with the forward or feed driving train, which com rises gear wheel 270, the pinion 34 mounte upon the shaft 35, the change gears, including the gear 34, and gears 36 and 37, which gears 34, 36 and 37 will re spectively mesh with the gears 38, 39 and 40 accordingly as the. sleeve-like hub 41 carrying such latter gears is moved to one or another of its positions of adjustment, it being splined on the shaft 42, which shaft has fast upon it a gear wheel 43 in mesh with a pinion 44, which is integral in the present instance with the hub 14 and thus 1s driven by means of the chain 12. The hub 41 is moved into its various positions of adjustment by means of a rock arm 45 fast to the shaft 46, which carries a handle 47 for its actuation.

The change gearing, comprising the cars 34, 36 and 37 respectivel operative wi the gears 38, 39 and 40, is or effecting various speeds of feed. The reversal from the slow forward feed to the quick return is effected by moving the shaft 26 longitudinally toward the right. In the resent instance this is done'by means of a ork 48 having antifriction rollers running in a groove in the clutch member 33, and which fork has a handle 49 for 'ts actuation. By movin the shaft 26 towarh the right the gear whee 270 isinade inoperative in respect of such shaft and at the same time a conical friction clutch member 50 carried at the opposite end of such shaft 26 will be drawn into engagement with"a mating conical friction clutch member 51 which is fast with the hub 14, so that the unreduced speed of such hub will be applied directly to the intermediate driving shaft 26 and in the reverse direction, so that the quick return feed will be effected. When the handle49 is moved in one direction it will cause the slow feed movement,- and when it is moved in the opposite direction it will cause the quick return or reverse movement irrespective of whether the connection between the intermediatedriving shaft 26 and the feed driving shaft 17 is set for impartin a forward or a backward feed to said sha t.

The four views illustrating the settings of the reversing mechanism show the respec tive movements and the corresponding settings thereof as follows: In Figs. 3 and 5 the clutch on the ri ht hand is engaged for positively driving t e shaft 26 in the direction indicated by the-arrow. For reversing this movement for the guick return, the intermediate driving sha t 26 is shifted toward the right hand, thereby bringing into engagement the quick return frictional drive mechanism at the left hand side, but without changing the position .of the central clutch 29 by which the feed direction ha d been previously determined, as shown by the setting in Fig. 3. In the third view the clutch for selecting the feed direction is shown engaged toward the left hand, while the intermediate driving shaft is shown shifted to the left hand for positive operation through the 'clutch at the extreme right. In Fig. 6, with the keyed selecting clutch in the same positionas in the third view of this sheet, the intermediate driving shaft is again shown, as in the second view, shifted toward the right hand, bringing into action the quick return driving mechanism at the extreme left hand. By this means, as indicated by the arrow on shaft 17, this shaft is reversed in its direction as compared with the positively driven movement indicated in the third view. Thus, this series of views shows the same kind of drivin action in the first and third views, but wit the direction reversed in the third view as compared with that indie ed in the first, and in the other views,t o second and fourth respectively,-the guick return reverse directions of the she t 17. Thus, in whichever direction the shaft 17 may have been turned through the operation of the positively driven mechanism its direction is reversed on throwing into action the quick return mechanism.

Having thus described our invention, we claim:

1. In a feed mechanism, the. combination with a feed driver, of a driving shaft therefor, reversing mechanism between said shaft and feed driver a driver, two trains of gearing between said driver and driving shaft for res ctively imparting opposite directions 0 rotation at diiferent speeds from the driver to the driving shaft, each of said trains comprising a clutch, said clutches being connected for successively disconnecting either of said clutches and connecting the other.

2. In a feed mechanism, the combination with a feed-shaft, of a longitudinally shiftable driving-shaft therefor, reversing mechanism between said shafts, a driver, two trains of gearing between said driver and riving-shaft for respectively impartin different speeds and opposite directions 0 rotation from the driver to the driving shaft, each of said trains com rising a clutch, a member of each of 'sai clutches being mounted on said driving-shaft and being located thereon in position to successively disconnect one of said clutches and connect the other when said driving shaft is moved in one direction and to successively reverse the disconnection and connection when said driving shaft is moved in the opposite direction. i

3. In a feed mechanism, the combination with a feed-shaft and a miter gearmounted thereon, of a driving-shaft mounted for 1ongitudinal movement, a pair of miter ears oose on said driving-shaft and me in with the gear on the feed shaft, a clutc splined on the driving shaft for en agement with either of the gears of sai pair, a

driver, two trains of gearing between said 4 driver and driving-shaft for respectivel imparting different s eeds and opposite d1- rections of rotation fi'om the driven tothe driving-shaft, each of said trains comprisring a nected to successively disconnect either of said clutches and connect the other.

4. In a feed mechanism the combination with a feed-shaft, and a mlter gear mounted thereon, of a driving shaft mounted for lon- 'tudinal movement, a pair of miter gears oose on said driving-shaft and meshing with the gear on the feed shaft, a clutch splined on the driving-shaft for engage ment with either of the gears of said pair, a driver, two trains of gearing between said driver and driving-shaft for respectively imparting diiferent s eeds and opposite di rections of rotation rom the driver to the driving-shaft, each of said trains comprising a clutch, said train clutches being fast with the driving-shaft and located for successively disconnecting either one of said clutches and connecting the other upon the longitudinal movement of the driving-shaft in one or the other direction.

5. In a feed mechanism the combination with a feed-shaft and a mlter gear mounted thereon, of a driving-shaft mounted transversely of the feed-shaft for longitudinal movement, a air of miter gears loose on said driving-shaft and in continuous mesh with the gear on the feed-shaft, a clutch" shaft between said or en agement with splined on the drivin pair of miter gears either of said gears, means or shifting the clutch and holding the same in its shifted clutch, said train clutches being con position, two

trains of gearin for respectively imparting difi'erent spec s and opposite directions of rotation to the driving shaft, each of said trains comprising a clutch, said train clutches bein 0 eratively connected with the driving sfia t and lo cated for successiveiy disconnecting either of said clutches and connecting the other.

6. In a feed mechanism, the combination of a feed-driver, a main-driver and an intermediate-driver, connections between said intermediate-driver and feed-driver for rotating the feed-driver in reverse directions at the same speed, and means for controlling the direction of rotation of the feed driver, connections between said main-driver and the intermediate-driver for rotating the intermediate driver in reverse directions at different speeds and means or controlling the direction of rotation of the intermediate driver, substantially as specified.

7. In a feed'mechanisrn, the combination of a feed-driver, change and reverse gearing connected to'the feed'driver for drivm the same in opposite directions respective y at different speeds, and reverse gearing for changing the directions of the respective speeds.

HENRY M. LUCAS. JAMES B. GREEN. Witnesses:

Geo. A. Yosr, lines A. Woon.

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