US956643A - Milling-machine. - Google Patents

Description

R. K. LE BLOND & WV F, GROENE MILLING IVIMJHINE= APPLICATION FILED JUNE 6,1908.

Patented 3, 1910.

4 SHEETS-SHEET l.

uucuibm R. K. LE BLOND & W. P. GROENE.

MILLING MACHINE.

APPLICATION FILED JUNE 6, 190B.

Patented Ma 3, 1910.

4 SHEETS-SHEET 2.

Unueuwm R. K LE BLOND & w. P. GROENE.

MILLING MACHINE.

APPLICATION FILED JUNE 6-, 1s0s.

Patented May 3, 1910.

4 SHEETS-BHEET 3 g g f ll c m R anon tow.

E. K. LE BLOND 6: W. P. GROENB.

MILLING MACHINE. APPLICATION FILED JUNE 0, 1908.

Patented May 3, 1910.

SHEETSSHEET 4.

W1 ha ammo UNITED PATENT OFFICE.

RICHARD K. LE B LOND AND WILLIAM I. GBOENE, OI CINCINNATI, OHIO, ASBIGNORS 1'0 THE R- K. LE BLOND MACHINE TOOL COMIANY, OF CINCINNATI, OHIO, A. (103'- MILLING-MACHINE.

Specification of Letters latent.

Patented May 3, 1910.

To all whom it may concern:

Be it known that we, RICHARD K. Le Bronx) and WILLIAM F. Gnonun, citizens of the United States of America, and residents of Cincinnati, count of Hamilton, State of Ohio, have invents certain new and useful Im rovements in Milling-Machines, of which the following is a specification,

The object of our invention is to simplify the feeds of the slides of milling machines, and the means of regulating said feeds.

Referring to the accompanying drawings,

,in which like parts are indicated by similar reference letters wherever they occur throughout the various views: Figure 1 is a side elevationof a milling machine embodying our invention, showing the overhanglng arm partly broken away. Fig. 2 1s a sectional view taken upon line m-zc of Fig. 3. Fig. 3 is a sectional view taken upon irregular line y--y of Fi 1, the table and the feed screw for the tab e in Fig. 3 being shown broken away and the ends being brought together to economize space. Fig. 4 is a horizontal sectional view taken upon lino r of Fig. 2. Fig. 5 is a detail view of the lever arms, the lower one of which regulates the feed of the knee, and the upper one of which regulates the feed of the saddle. Fig. 6 is a detail view of the automatic means of stopping the feed of table, the view being taken upon line 2-z of Fig. 2, upon a somewhat enlarged scale. Fig. 7 1s a detail horizontal sectional view upon line w-w of eferring to the parts: Journa-led in a box, a, which is secured to the knee, A, is a short power transmission shaft, a, to the end of which is secured the power feed spindle, B, which receives its power from feed box, B. Fixed 11 on the shaft, (1', is a pinion, o, and journa ed thereon is a reversing lever, C, which at its inner end has two stud shafts, upon which are journaled pinions, c. a. Pinion, c, meshes with pinion, c, and with pinion, c. The piuions, c and c are situated so that when the lever, C, is in a central position, such as shown in ig. 3, they stand adjacent to but out of gear with agear wheel, a", which is journaled upon a as illustrated in Fig. 4, and that when the lever, O, is brought to its uppermost position, the pinion, a, will mesh with gear wheel, 0, and that when the lover, C, is

brought to its lowermost position, the pin ion, 0, meshes with gear, c. Thus when the lever, C, stands in its central position, the gear, p, is stationary, and when the lever, C, 1s m its uppermost position, gear, 0, has rotation transmitted to it in one direction and when lever, C, is in its lowermost position,

gear, a, has rotation transmitted to it in the opposite direction. Lever, C, may be locked m its intermediate, or in its upper, or lowermost position, by means of a lock-pin, a, taking into the recesses in :1 lug, 0?, formed upon the lmee.

J ournaled in the knee, A, is a longitudinal driving spindle, D, vertically above the elevating screw, a of the knee. Spindle, D, is termed the driving spindle of the knee herein for the reason that the elevating screw of the knee, the cross feed screw 0f the saddle and the feed screw of the table derive their rotations directly from it. Spindle, D, has a gear wheel, d, which meshes into the elongated gear wheel, a. Mounted loosely upon spindle, D, is a sleeve, (1, which carries a bevel pinion, d, which meshes with a bevel gear, a, which is secured to the upper end of the elevating screw, a. The sleeve, d, is held against rotation by means of a set screw, a, in the transverse wall, a, of the knee, but pinion, at, is mounted rotatably u on the reduced inner end of the sleeve,

Feathered upon the spindle, 1), adjacent to the bevel pinion, d, is a clutch, d, which is engaged by the arm, d, of the feed-regulating lever, (i which is mounted upon a vertical pivot, (1 in the wall of the knee, as illustrated in Fig. 4. By throwing the lever, (i clutch, (1, may be brought into engagement with bevel pinion, 4 to convey rotation to the elevating screw. a It is seen that the lever, (i being mounted upon the vertical pivot. rl, has movcn'leut simply in a horizontal plane so that the weight of the lever itself will not cause it to be jarred by the vibration of the machine out of the position to which it has been placed. Clutch, r1, may be automatically shifted out of engagetucnt with the bevel gear, 4*. by means 2 of a plunger, cl", which is secured to the end, stud shaft, 0, which is mounted in the knee.

n of the arm, (1". Arm, d", projects tl'lrough a perforation in the knee to be ongaged by a dog, In, to he adjuster] upon the column, K, to the oint at which it is desired to uutomatical y stop the movement of the knee. Mounted in the knee parallel to the spindle, D, is a cross-feed screw, E, of the saddle, E. Mounted rotutnblyn on the screw, E, is a clutch member, 1;, wine has a pinion, e, to mesh with :1 piion, d of the clutch, d. Adjacent to the clutch member, 2, a clutch member, 6 is secured to the screw, E. Clutch member, e, is engaged by the arm, e, of regulatln lever, E, which is journaled in the walls oi the knee upon vertical pivot, 03, and projects to the front of the knee, and has a handle, 6* ad acent to the handle, cl. Lever, E, has likewise movement simply in a horizontal plane, so that the vibration of the machine will not cause it to be moved otits own weight. Lever, E, has an automatic s\ v1tch consisting of an arm, 0 which pro ects into the path of a lug, 0, adjustable in a T-groove upon the underside of saddle, E, as shown in Fig. 3. Saddle, E, has a central block, a, which projects through the longitudinal way in the knee, and has a downwardly projecting arm or bracket, E winch has an enlarged central bore, E, through which the feed screw, E, of the saddle passes tIBG at contact. Bracket, E, is connected by arms, E, with a block-nut, E, which has an in ternally screw-threaded bore, the screwthreads of which engage the threads of the cross-feed screw, E. Journaled to rotate within the enlarged bore, E, of the bracket, is a sleeve, 0, through which the feed-screw, E, asses without contact. (See Fig. 7).

e will now describe the means of conveying motion to the table, F, from drivin spindle, D, of the knee. The swivel base, of the table, is centrally ournaled upon the reduced upper end of the block, a, of the saddle, as shown in Fig. 2. Block, 2, has a central vertical shaft, e, at the lower end of which is a bevel pinion, e, which meshes with a bevel pinion, 2", upon the end of the sleeve, e. At the upper end of the shaft, 6', is a bevel pinion, e Sleeve, 6, carries a pinion, e, which meshes with an elonated inion, D which is secured upon the siaft, Swivel base, f, has journal lugs,

', f", shown in Fig. 3, 111 which are seated ushin f, f". The internal screw-threads of bus iin f, are engaged by the threads of the fee -screw, F, o t 1e tab e. The feedscrew, F, vertically above the block, a is devoid of screw-threading and has mounted loosely upon it a sleeve, G, which has a bevel gear, 9, to mesh-with the bevel pinion, e Bushing, f, is mounted rotatably in bearings, f and projects to a point adjacent to the sleeve, G, at which point clutch, g, is mounted upon the sleeve, 1, the sleeve and F. Clutch, 9 is engaged by the yoke, of a trip lever, g, which has upon its en a handle, 9. Lever, g, is journaled in the swivel base, i, and has formed in it gear teeth, which are engaged by the teeth of a rack, the up or bevel end of which stands in t e lath o lugs, i, which me be adjusted in a -way, f, upon the side 0 the table.

Journaled in the knee is a shaft, H, which has upon its inner end a bevel gear, h, to engage the bevel gear, a, upon the elevating screw and which at its outer end, it, is left square for engagement with a crank for retating the elevating screw by hand.

The operation is as follows: \Vhen either the pinion, a, or 0 is brought into engagement with the gear wheel, (1, by the shifting of the reversing lever, C,-'rotation is conveyed to the spindle, D, the direction of the rotation being dependent upon which of the pinions, c, or is brought into gear with the gear, a. If it be desired to elevate the knee, arm, 03 is thrown to bring the clutch, d into mesh with bevel pinion, 4 In this position of the clutch, d rotation will be conveyed to the elevating screw, a", by means of the bevel pinions, cl, and a. To reciprocate the saddle while leaving the knee stationary, the lever, d is put in position to hold the clutch, (1, out of engagement with the bevel pinion, cl, and the lever, E is thrown to bring the clutch member, r, into engagement with the clutch member. e'-, which wi shaft, D, to the cross-feed screw, E, and then the block, a will be fed along the screw, E, and reciprocate the saddle, E. If it be desired to reciprocate the table while having both the saddle and the knee stationary, levers, d and E are placed in a position such as to hold the clutch, all, out of enga ement with the bevel, 02 and the clutch mem er, 6, out of engagement with clutch member, a", and handle, 9, is thrown so as to turn the shaft, g, and cause the yoke, to throw the clutch, g, into engagement with the sleeve, G. Rotation of'theshaft, D, will then be conveyed by the pinion, B, through the pinions, 0", e c G, and clutch member, g, to the feed screw, F, of the table. The reverse motion of any of these parts, viz. the knee, the saddle, or the table, is obtained simply by the shifting of the reverse lever.

lVhat we claim is:

1. In a millin machine the combination of a knee, a sac dle upon the knee, a table upon the saddle, a horizontal driving spind e mounted in the knee, an elevating screw for the knee, gear wheels coupling the driving spindle and the elevating screw, a feed screw for the saddle mounted in the knee,

gear wheels coupling the spindle and said the clutch bein splined upon the feed screw,

feed screw. a bracket carried by the saddle and engaging the feed screw to eflect the feed of the saddle, a pinion upon the drivmg spindle, a gear wheel mounted upon the bracket and intermeshing with the pinion l then convey rotation from the upon the driving spindle, a feed screw in the table, and means for coupling the feed screw of the table and the gear wheel carried by the bracket.

2. In a milling machine (he combination of a knee, a saddle, a vertical feed for the knee, a cross feed for the saddle, a drivln spindle mounted in the knee,a slidm clutc 1 splined upon the driving spindle, an a sliding clutch splined upon the cross feed and engaging the clutch upon the driving spindle, the sliding clutch upon the spindle being adapted to couple the said spindle to the verticnl feed, and the sliding clutch upon the cross feed screw bein adapted to con la the cross feed screw to t e driving spin e and means for moving the clutches to effect the aforesaid coupling of the driving spindle to the vertical and to the cross feeds.

3. In a millio machine the combination of a saddle, a table mounted upon the saddle, a feed screw for the table, a bracket carried by the saddle, a block nut secured to the bracket, a pinion adapted to convey rotation to the feed screw of the table, said pinion being carried by the bracket and havmg an enlarged bore, and a cross feed screw for the saddle, passing with clearance through the bore of the pinion and engaging the block nut.

4. In a milling machine the combination of a knee, a saddle mounted upon the knee, means for feeding the saddle upon the knee, :1 table mounted upon the saddle, a driving spindle mounted in the knee, means of couphug the driving spindle of the knee with the feed box, an e ongated pinion secured upon the driving spindle of the knee, a feed screw for the table, a bracket upon the saddle and intermediate gears mounted upon the bracket and coupling the feed screw of the table and the elongated pinion upon the driving spindle.

5. In a. millin machine the combination transversely upon the knee, :1 base swiveled upon the saddle, a table mounted to reciprocate u on the swivel base, a feed screw mounted in the swivel base and engaging the table, a central vertical shaft mounted in the saddle, means for coupling said shaft and the table feed screw, a cross feed screw for the saddle and a drivin s indle both mounted in the knee vertica l eneath said vertical shaft, and gear whee s coupling the vertical shaft and the drivin spindle and adapted to move adjacentto ut out. of engagement with the cross feed screw.

ti. In a milling machine the combination of a knee, a saddle and a table, a feed screw for the saddle mounted in the knee, a bracket projecting down from the saddle and engaging the feed screw to efi'ect the feed of the saddle, a driving spindle mounted in the knee directly beneath the feed screw, a pinion upon the spindle, a second pinion mounted on the bracket passing the feed screw with clearance and engagin the pinion on the driving spindle, a. feed screw for the table, and gear wheels carried by the bracket and adapted to connect the settzlclmd pinion and the feed screw of the ta e. I

7, In a milling machine the combination of a knee, a saddle u on the knee, a swivel base upon the sadd e, a table upon the swivel base, a feed screw for the table, a vertical shaft adapted to engage the feed screw of the table, a cross feed screw adapted to reciprocate the saddle and a driving spindle, both the cross feed screw and the driving spindle bein mounted centrally in the knee, and gear \vlieels mounted upon the saddle coupling the driving spindle, and the vertical shaft and passing the cross-feed screw with clearance.

RICHD. K. LE BLOND. WILLIAM F. GROENE.

Witnesses:

GRACE A. PUGH, NASON P. Pnrrormnn.

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