US1340584A - Feeding mechanism for machine-tools - Google Patents

Description

L. 1:. WAITE. FEEDING MECHANISM FOR MACHINE TOOLS.- AP'PLIICATION FILED JUNE 7, I9I9.

13340584, Patented May 18,1920;

3 SHEETS-SHEET 1- I 17 2o I6 llllllllll l6 1o 2| I4- (5 v I WITNESSES 1,340,584. Patenwa May 18,1920

L. E'. WAITE. FEEDING MECHANISM FOR MACHINE TOOLS.

, APPLICATION man JUNEI. 1919.

3 SHEETS-SHEET 2- WITNESSES INVENT?" WW7 00. W '5 L. E. WAl-TE.

FEEDING MECHANISM FOR MACHINE TOOLS.

APPLICATION mm mun. 1919.

1 ,340,5 4, Patented May 18, .1920.

3 SHEETS-SHEET 3- REDi/Worif 5 Wm LORENZO E. WAITE, OF TOLEDO, OHIO.

FEEDING MECHANISM FOR MACHINE-TOOLS.

Specification of Letters Patent.

Patented May 18,1920.

Application filed June 7, 1919. Serial No. 302,440.

To all w from. it may concern Be it known that I, Lonnnzo E. VAITE, a citizen of the United States, residing at Toledo, in the county of Lucas and State of Ohio, have invented new and useful Improvements in Feeding Mechanism for Machine-Tools, of which the following is a specification.

My invention relates to feeding mechanisms for machine tools, and more particularly for that class of machine tools known as milling machines.

The principal object of this invention is to provide a feeding mechanism, particularly for milling machines, which will not permit the connection of the power driving means to more than one feed at a time. In the common types of milling machines it is possible to connect to the driving power the table-feed, the cross-feed, and the kneefeed or two of them at the same time. Careless operators sometimes do connect two of these feeds at once to the driving power with disastrous results to the machine or work. It is my principal purpose to make it impossible for an operator to do this. My invention also comprises some of the subcombinations of mechanisms whereby portions of the functions of my improved machine are performed.

Referring to the drawings which form a part hereof, Figure'l is a vertical section through the knee of a milling machine, parts thereof and of adjacent parts being shown in elevation and broken away; Fig. 2, an elevation of the middle portion of the knee and adjacent parts, and a vertical section of the upper parts of the knee, the section being at right angles to that on which Fig. 1 is taken, and on the line II, Fig. 2; Fig. 3, a vertical section on the line III-J11, Figs. 2 and 1; Fig. 4L, a front elevation of the central portions of Fig. 2, the side of the casing being removed to show the mechanism within; Fig. 5, a horizontal section on the line V-V, Fig. 4; and Fig. 6, a horizontal section on the line VI-VI, Figs. 2 and 1, parts being broken away.

On the drawings, 1 designates the base and 2 the standard of a milling machine. 3 is the guide on the standard for the knee 4:. 5 is the knee-horn secured tothe base 1 by screws, one marked 6, being shown. The horn 5 supports the telescopic nut 7 in which the vertical 'knee-elevating' screw 8 rotatably supported in the knee partition 9 works. The nut 10 secures the screw 8 to the partition. This screw has the bevel gear 11 keyed to it and supports the knee through the roller bearing 12. The bevelgear 11 is driven by the bevel-pinion 12 on the shaft 13 which projects beyond the front of the knee where it is provided with a squared portion 1% for the application of a crank or handle. This shaft has the spurgear 15 keyed thereto.

The knee carries the'cross-screw 16 which lies above the shaft 13 and parallel therewith and has the squared portion 16 provjecting beyond the front of the knee whereby a handle may be attached for the hand operation of the screw. The shaft 16 carries with it the spur gear 16 and its threaded portion works in the feed-nut 17 carried by the block 18 secured to the lower side of the cross-feed or carriage 19. The feed-nut 17 screws into the block 18 and is itself internally threaded at one end to receive the supplemental nut 20, on which the securing nut 21 works, the latter abutting against the ends of the nut 17 and the block 18. The carriage 19 has travel on the top of the knee in a manner well known.

The work-table 22 has travel on thecarriage at a right angle to the travel of the latter, to which it is connected by the usual dovetails 23. The carriage provides the bearings 24 for the feed-screw 25 which works in the feed nut 26 carried by the block 27 secured to the lower side of table 22. The screw 25 has the spur-gear 28 meshing with the gear 29 on the table feed shaft 30 having the bearings 31 and 32 on the lower side of the table. The shaft 30 has the bevel-gear 33 which meshes with the bevel-gear 3 1 on the shaft 5 The gear 33 is carried by the sleeve 36 loose on the shaft 30 but connectible thereto by the clutch 37 operated by the yoke 38, which is actuated by the shaft 39 in any desired manner.

The shaft 41 is the main driving shaft for the several described feed-screws, has bearings in the knee 4;, and lies parallel with the shaft 13 and the carriage feed-screw 16. The sleeve 42 runs loose on the shaft 11 and is keyed to the bevel-gear 43, which meshes with the bevel-gear 43', the latter in turn meshing with the bevel-gear 14E keyed to the sleeve -15 which is loose on the shaft 41. The sleeve 15 carries the spur-gear 46 keyed thereto. The shaft 41 also carries the sleeve 17 loose thereon andengageable with the adjacent end of the sleeve by the two-lip clutch 48. The sleeve 47 is further provided with the long-toothed pinion 49 inte gral therewith.

The shaft 50 has hearings in the knee and lies parallel with the shaft 41 and directly above it. To the shaft 50 is keyed the spurgear 51 and the bevel-gear 34.

52 is a shaft having hearings in the knee parallel with the shafts 41 and 50. The shaft 52 carries the sleeve 53 which is slidable along the shaft and rotatable therewith by the usual spline and groove connection 54. One end of the sleeve 53 has the spurgear 55 arranged to mesh with the gear 49, and the other end bears the spur-pinion 56 which may mesh with the gear 46, when the sleeve is moved on the shaft 52 so as to cause the gear 55 to slide out of mesh with the pinion 49. The hand-wheel 56 is loose on the shaft 52 at the front of the knee and may be connected so as to rotate the shaft by pushing in the collar 59 so as to mesh its clutch teeth 58 with the teeth 57 on the wheel 56.

The shaft 60 has its bearings in the knee and is parallel with the shaft 52. It carries the two spur- gears 61 and 62, both loose thereon, the former meshing with the gear 15 and the latter with the gear 16 lVhen the gear 56 meshes with the gear 46 it also meshes with the gear 61, the gear 55 then be ing out of mesh with the pinion 49. The sleeve 53 when moved to its intermediate position has the gear 55 in mesh with the long pinion 4-9 and the gear 56 in mesh with the gear 62, the gear 55 being out of mesh with the gear 51. ll hen the latter two gears are in mesh, the gear 56 is not in gear with the gear 61 or 62.

The sleeve 53 has the recess 63 to receive the arms 64 of the yoke 65 slidable on the guide rod 66 in the knee. The underside of the yoke has the rack 67 with which the pinion 68 on the rock-shaft 69 meshes. This shaft is operated by the handle 70.

The gears 43 and 44 have their opposing faces adapted to be clutched to the clutch member 71 slidable on the shaft 41 and keyed thereto. The member 71 is operated by the yoke or clutch shoe 72 keyed to the shaft 7 3 operated by any suitable means.

hen it is desired to raise or lower the knee, the shaft 73 is operated in the proper direction to cause the clutch member 71 to engage the proper bevelgear 43 or 44 for actuating the sleeve 45 in the proper direction. The handle is operated to move the sleeve 53 so as to bring the gear 56 into mesh with the gears 46 and 61, the chain of driving connections from the shaft 41 to the feed-screw 8 being as follows: from the shaft 41 through the clutch member 71, the bevel-gear 44 (or the bevel- gears 43, 43, and 44), the sleeve 45, the gears 46, 56, 61, and

15, the shaft 13, and the gears 12 and 11 to which moves the carriage 19 toward or from the standards.

If it is desired to move the table 22, the handle 70 is moved to bring the gear 55 into mesh with the gear 51, the driving connections from which to the feed-screw 25 being as follows: from the gear 51 through the shaft 50, the bevel- gears 34 and 33, the shaft 30, and the spur-gears 29 and 28 to the feedscrew 25 which moves the table 22 at right angles to the feed of the carriage and the knee.

My invention is not limited to the precise combinations and structures described and shown as many changes may be made therein without departing from the spirit of my lnvention.

I claim:

1. In a machine of the class described, a standard, a knee movable vertically thereon. a carriage carried by the knee and movable horiaontally thereon, a table carried by the carriage and movable horizontally thereon and at right angles to the movements of the carriage, separate feed-screws for the knee, carriage, and table, a drive-shaft, and means whereby only one feed-screw can be con nected at one time to the drive-shaft.

2. In a machine of the class described. a standard, a knee movable vertically thereon. a carriage carried by the knee and movable horizontally thereon, a table carried by the carriage and movable horizontally thereon and at right angles to the movements of the carriage, separate feed-screws for the knee. carriage. and table, a drive-shaft, a pair of gears driven by the shaft, separate gears for driving the screws, and a pair of slidable gears secured together and arranged to be simultaneously meshed with either one of the shaft driven gears and only one of the screw-driving gears.

3. In a machine of the classdescribed, a standard, a knee movable vertically thereon. a carriage carried by the knee and movable horizontally thereon, a table carried by the carriage and movable horizontally thereon and at right angles to the movements of the carriage, separate feed-screws for the knee. carriage, and table, a drive-shaft, a pair of gears, means for connecting one or both gears to the shaft, separate gears for driving the screws, and a pair of slidable gears Secured together and arranged to be simultaneously meshed with either one of the shaft-driven gears and only one of the screw-driving gears.

4c. In a machine of the class described, a standard, a knee movable vertically thereon,

a carriage carried by the knee and movable horizontally thereon, a table carried by the carriage and movable horizontally thereon and at right angles to the movements of the carriage, separate feed-screws forthe knee, carriage, and table, a drive-shaft, coaxial sleeves thereon, a gear on each sleeve, one of the gears having elongated teeth, and separate gears for driving the screws, a pair of slidablegears secured together, one adapted to slide out of mesh with the elongated gear and to slide, while in mesh with the elongated gear, into mesh with two of the screwdriving gears, but with only one at a time, and the other adapted to connect the remaining shaft-driven and screw-driving gears when the gear which meshes with the clon gated gear is out of mesh therewith.

In a machine of the class described, a standard, a knee movable vertically thereon, a carriage carried by the knee and movable horizontally thereon, a table carried by the carriage and movable horizontally thereon and at right angles to the movements of the carriage, separate feed-screws for the knee, carriage, and table, a drive-shaft, coaxial sleeves thereon, a gear on each sleeve, one of the gears having elongated teeth, means for releasably connecting the sleeves to the shaft, and separate gears for driving the screws, a pair of slidable gears secured together, one adapted to slide out of mesh with the elongated gear and to slide, while in mesh with the elongated year, into mesh with two of the screw-driving gears, but with only one at a time, and the other adapted to con-- nect the remaining shaft-driven and screwdriving gears when the gear which meshes with the elongated gear is out of mesh therewith. c

6. In a machine of the class described, a standard, a knee movable vertically thereon, a carriage carried by the knee and movable horizontally thereon, a table carried by the carriage and movable horizontally thereon and at right angles to the movements of the carriage, separate feed-screws for the knee, carriage, and table, a drlve-shaft, coaxial sleeves thereon, a gear on each sleeve, one of the elongated gear, into mesh with two of the screw-driving gears, but with only one at a time, and the other adapted to connect the remaining shalt-dr1ven and screwdriving gears when the gear which meshes with the elongated gear is out of mesh therewith.

7. In a machine of the class described, a standard, a knee movable vertically thereon, a carriage carried by the knee and movable horizontally thereon, a table carried by the carriage and movable horizontally thereon and at right angles to the movements of the carriage, separate feed-screws for the knee,

carriage, and table, a drive-shaft, coaxial sleeves thereon, a gear on each sleeve, one of the gears having elongated teeth, means for releasably connecting the sleeves to the shaft, a third sleeve on the shaft, means releasably connecting the same to the shaft, means for rotating the last sleeve and the other two sleeves in either direction, and separate gears for driving the screws, a pair of slidable gears secured together, one adapted to slide out of mesh with the elongated gear and to slide, while in mesh with the elongated gear, into mesh with two of the screw driving gears, but with only one at a time, and the other adapted to connect the remaining shaft-driven and screw-driving gears when the gear which meshes with the elongated gear is out of mesh therewith.

8. In a machine of the class described, a standard, a knee movable vertically thereon, a carriage carried by the knee and movable horizontally thereon, a table carried by the carriage and movable horizontally thereon and at right angles to the movements of the carriage, separate feed-screws for the knee, carriage, and table, a drive-shaft, a rotary slidable-member having three positions, and means whereby the said member is connected to rotarily drive the feed-screws, but only one at each position, and means for rotating the said member.

Signed at Toledo, Ohio, this lth day of June, 1919.

LORENZO E. WAITE.

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