US1309389A - Assiot ob - Google Patents

Description

I I. YEOIVIANS.

BORING MACHINE.

APPLICATION FILED 050,12. I918.

l I I Patented July 8, 1919.

l I I I I l L. I. YEOMANS.

BORING MACHINE.

APPLICATION FILED DEC-12.1918.

Patented July 8, 1919.

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L. I. YEOMANS.

BORING MACHINE.

APPLICATION FILED 050.12. 1918.

3 SHEETS- SHJIT 3.

, iat'ulm'd July 8, 1919.

LUCIEN I. YEOMANS, OE QQHECAGQ, ILfiINGIS, AS$IGNOR T0 AMALGAMATED MACHI NERY CDRPOBATION, @E @E-IECAGO, ELLE? 015, A GORPQRATIGN 0F DELAWARE.

EGEHG-EEAGHENE.

specification or" Letters ratent.

Patented July 1%, thi h Application filed December 12, 18. Serial Ho. 256,408;

To all whom it may concern: 4

Be it known that l, Lucien l. YEoMANs, a citizen of the United States, residing at Chicago, in the county of Cook and State of lllinois, have invented a certain new and Improved BoringWlachine, of which the following is a specification.

in a gun-boring machine, the bearings for the head-stock spindle and the boring bar must be accurately alined. The great length of such a machine, however, has made it dirhcult to obtain such alinement. The object of the present invention is to provide a machine for use in accurately babbitting and boring out the various bearings in a gun-boring or analogous machine.

in the accompanying drawings, Figure l is a side elevation of a boring machine embodying my invention. Figs. Qand 3 illustrate portions of the feeding mechanism. Fig. 'l: is an end elevation. Fig. 5 is a sectional view taken in the plane of line 55 of Fig. 4.

In the drawings, 3 indicates two parallel finished carriage ways of a gun-boring or similar machine. 5 is a combination mandrel and boring bar for use in babbitting and boring the various alined bearings (not shown) of the machine. The means for rotating, advancing and retracting the bar 5 comprises a carriage 20 capable of being slidably supported and guided by the ways 3 and of being lifted off said ways after the bearings have been bored. The means for moving the carriage 20 upon the ways 3 comprises a screw 21 fixed at one end' to a bracket or cross-piece 22 (Fig. 2), said bracket having flanges 28 that overlie the inner portions of the ways-3. 24. are clamping plates which are clamped to the lower surfaces of the inner portions of the ways 3 by means of bolts 25. The screw 21 is engaged by an internally-threaded sleeve or nut 26 (Fig. 3) which is rotatably mounted in a bearing 27 upon the lower side of the carriage 20 The sleeve 26 is held against endwise movement with rela tion to the carriage by means of a llange28 and a nut 29., d

An electric motor 80 mounted upon the rear end of the carriage 20 furnishes power for revolving-the bar 5 and the feed-nut 26. fin the armature shaft of the motor is a pinion 31 that meshes with a gear wheel 32 fixed on drive shaft 33 mounted in the carriage 20. The shaft 33 carries a clutch 3%, the loose element of which is rigidly connected to a pinion 35. The pinion 35 meshes with a spur gear wheel 36 which is rotatably mounted upon a spindle 3'? extending parallel with the shaft 33. Rigid with the spur gear wheel 36 is a pinion 38 that meshes with a spur gear wheel 39 that is loose on the shaft 33. A pinion i0 fixed to the spur gear wheel 39 meshes with a spur gear wheel ll which is fixed upon the spindle 37. The bar 5 is coupled in any suitable manner to the forward end of the spindle 37.

it will be seen that when the clutch 3-4 is thrown in, power will be communicated from the motor 30 to the bar 5, through the train of reduction gears 31, 32, 35, 36, 38, 39, 4 0 and 41.

Means is provided for moving the carriage 20 upon the ways 3 at two difl erent speeds. The means for moving the carriage at low speed comprises a pinion i2 fixed upon the spindle 37 and meshing with a pinion 13 mounted upon a stub shaft is in the carriage 20. l ivota-lly mounted upon the shaft i l is a bracket 45 that carries a pinion l6 which meshes with the pinion 43. When the bracket s5 is in the position shown in Fig. i, the pinion 46 meshes with a spur gear wheel at? which is rotatably mounted on the carriage 20. Fixed to the spur gear wheel a? is a pinion 48 which meshes'with a spur gear wheel as) that is fixed to the feed nut 26. A handle 50 on the bracket 45 provides means for swinging the bracket 4.5 to carry the pinion as into and out of mesh with the spur gear wheel 47." Any suitable means may be provided for holding the bracket 4-5 in and out of operative position. y

The means for rotating the feed nut 26 at high speed comprises a. sprocket wheel 51 (Fig. i) which 1s looselymounted upon the shaft 33 and is arranged to be connected. thereto by means of a clutch 52. The sprocket wheel 51 carries a chain 58 which extends to asprocket wheel 5% mounted upon a shaft 55 in the carriage 20. Rigid with the sprocket wheel 54 is a pinion 56 that meshes with the spur gear wheel 41-7.

Means is provided for throwing the clutches 3% and 52 alternately into operation.

'hand lever 60 is pivoted between its ends to the carriage 20 at 61 and engages a flanged sleeve 62 fixed 0n the shifter rod 57.

' 63 is a latch which is pivoted to the carriage at 64 and adapted to lie in contact with the shifter rod 57 between the'bearings 65 and a collar 66 on the shifter rod.

The operation is as follows:

When the bearings of a gun-boring machine are to be formed, the carriage 20 is placed upon the finished ways of the gun' boring machine, and the screw 20 is secured to said ways by means of the bracket 22,

clamping plates 24 and bolts 25. The bar 5 having been connected to the spindle 37, power is communicated to -the motor 30. When the hand lever 60 is in the position shown in full lines in Fig. l, the shaft 33 revolves idly, no motion being communicated to the boring bar 5 or to the feed nut 26. When the lower end of the hand lever 60 is swung to the right, as viewed in Fig. l, the shifter rod 57 is slid to the left, thereby throwing in the clutch 34L, whereupon rotationis imparted to the boring bar 5. if

l the bracket 45 be in the position shown in Fig. 4C, the carriage 20 also will be moved toward the work at low speed.

When it is desired to move the carriage 20 in the opposite direction, the bracket 45 is raised to disenga V e the pinion 46 from the spur gear wheel 4 the safety latch 63 is raised clear of the collar 66, and the hand lever is swung in the direction to slide the shifter rod 57' to the right, as viewed in Fig. 1, thereby throwing out the clutch 34- and throwing in the clutch 52. "The sprocket chain 53 is thereby driven,-thus communicating relatively rapid movement to the feed nut 26 and causing the carriage 20 to move away from the work.

The rapid drive may also be employed to advance the carriage rapidly by reversing the direction of rotation of the motor.

When the bearings of the gun-boring machine. have been formed, the feed screw 21 may be released from the ways 3 the bar 5 disconnected from the spindle 3%, and the carriage 20 lifted off the ways.

necaeec I claim as my invention:

1. A machine for boring 'a bearing of a machine having carriage ways, said firstmentioned machine having, in combination, a carriage adapted to be slidably supported and guided by said'ways, a carriage-feed screw and a cooperating nut, one of said screw elements being rotatably carried by the carriage, means for clamping the other of said screw elements to the carriageways, a boring-bar spindlepnthe carriage, and a motor mounted on the carriage and operatively connected to the spindle and the rotatable screw element.

2. A machine for boring a bearing of a machine having two parallel carriage ways,

i said first mentioned machine having, in combination, 'acarriage adapted to be slidably supported and guided by said ways, a car riage-feeding element on' the carriage, a coacting feeding'elemenn means for detachably conhecting said coacting element to the carriage ways at a point forward of the carriage, a drive shaft and a boring-bar spindle on the carriage, a connection between the shaft-and the spindle, a drive connection between the spindle and the feeding element on the carriage,-a drive connection between the drive shaft and the last mentioned feeding element, and a motor mounted on the rear end of the carriage and operatively connect ed to the drive shaft.

8. A machine for boring a bearing of a machine'having carriage-ways, said first mentioned machine having, in combination, a carnage adapted to be slidably supported and guided by said ways, a carriagefeeding .element on the carriage, a coacting feeding LUCIQEN I. YEOMANS.

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