US1573454A - Multiple-splining machine - Google Patents

Description

Feb. 16 1926.

J. A. SHUTZ MULTIPLE SPLINING MACHINE Filed April 16, 1924 ,4 TTU/P/VEY Patented Feh. 1c, 1926.

outrun stares JOHN A. SHUTZ, OF RICHMOND, INDIANA.

MULTIPLE-SPLINING MACHINE.

Application filed April 16, 1924.

Be it known that I. Jenn A. SHUirz, a

citizen of the United States, residing at Richmond, in the county of li ayne and State of Indiana, have invented certain new and useful Improvements in Multiple- Splinin Machines of which the following is a specification This invention relates to new and useful improvements in multiple splining ma- 3 chines. It is the principal object of my invention to provide machine adapted to form a plurality of splines simultaneously in the endof a shaft in a minimunr amount of time and in an accurate and efiicientman- "ner. In other words, my machine will cut any number of splines in a shaft in one operation.

' 1 "ing to the accompanying drawing's, Figure 1 is a side elevational view of my machine, partially in section. Figure is a sectional view taken through the machine on the line 2-2 of Figure 1. Figure 3 is a detail view of the cutting-tool actuating mechanism. And Figure 4 is a detail plan view of the ratchet mechanism.

Referring more particularly to the drawings, the numeral 1 designates a base plate provided with a guide slot 2 in which there reci i rocates a plate 3 having a head-stock l and a tail stock 5 supported thereon. The head and tail stocks are provided with centers 6 adapted to support a shaft 7 in the end of which it is desired to machine a plurality of splines 8.

The grooves or splines 8 in the shaft 7 are radually formed by shaving the metal by means of a plurality of cutting tools or bits 9, the cutting edges of which are formed to conform to, the shape of the splines desired. The cutting tools traverse the end the shaft repeatedly in forming the splines in a manner well known to those acquainted with machine tools such as planers and shapers.

In the operation of the machine the bits or cutting tools are relatively stationary, and the work or shaft 7 is reciprocated by a crank 10 mounted on a shaft 11 journaled in a bearing 12 provided with a driving pulley 13. The crank 10 is connected to the head stock 4; by a connecting rod 14.

The cutting tools or bits 9 are secured to radially disposed clapper plates 15 by means of clamps 16. The position of the Serial No. 706,960.

hits on the plates 15 relative to the shaft may be adjusted by screws 17.

The clapper plates are pivotally 1nouuted at 18 on feed blocks 1.5). The pivots 118 permit the cutting bits to reccde slightly (luring: the non-cutting stroke of the shaft 7. The feed blocks 19 are provided with guile slots 20, and are radially movable along a stationary head 21. This head is mounted on the base plate 1 by means of posts 2 and is provided with a central opening 1.4) through which the shaft 7 0X- tends.

The feed blocks 19 and the cutting bits carried thereby are moved radially in and out by a rotating plate 2% mounted in the head 21 and provided with spiral threads on one face thereof which mesh with corresponding threads 26 on the rear faces of the blocks; 1!). The plate 24: is provided with a bevel gear 27 in mesh with a bevel pinion 28 mounted on a shaft 29 journaled in a bearing 30 attached to the head 21. (See Figures 1 and 3.) Vihen the shaft 29 is rotated, the plate 2st will also be rotated and all the cutting bits 9 will be moved in and out sinmltaneously.

The cutting bits 9 are moved inwardly automatically during the machining operation by a ratchet 31 mounted on the shaft 29. The ratchet 31 is in operative relation with a spring-influenced pawl 32 mounted in a housing 33. This housing forms part of a lever 3% pivoted on the shaft 29. The outer end of the lever 3a is connected to the head stock 4 by a post and a connecting rod 38.

It will be seen from this description that, whenever the shaft 7 is moved toward the cranl; 10, the cutting bits will be fed gradually inwardly. The cutting bits 9 are moved outwardly manually by a crank 37 mounted on the shaft 29. To permit the ratchet 31 to turn freely during the manual peration, the pawl 32 is provided with a finger piece 38 which extends through the housing 33.

By the means thus described, a plurality of splines will be formed in the end of the shaft 7, or in any other shaft, in a minimum amount of time, in an accurate and efficient manner, and in a single operation of the machine.

Having described my invention, I claim:

1. In a multiple splining machine, the combination with a base, of a device reciprocable thereon for carrying a shaft in which a plurality of splines are to be formed, a stationary head mounted on the base, having an opening through which the shaft extends, feed blocks radially movable along the stationary head, cutting tools hingedly carried by the feed blocks, said feed blocks formed with spiral threads in their rear faces, a rotatable plate mounted on the stationary head having spiral threads on one face thereof, to engage the threads on the feed blocks, power means for operating the r'eciprocable device, and means operable by the latter to rotate said plate to automatically feed the cutting tools inwardly during the machining operation.

2. In a multiple splining machine, the combination with a base, of a device reciprocable thereon for carrying a shaft in which a plurality of splines are to be formecL-a stationary head mounted on the base, having an opening through which the shaft vextends, feed blocks radially movable along the stationary head, cutting tools hingcdly car 'ied by the feed blocks, said feed blocks formed with spiral threads in their rear faces, a rotatable plate mounted on the stationar 7 head having spiral threads on one face thereof, to engage the threads on the feed blocks, power means for operating he rec procable device, and ratchet means operable by the latter to rotate said plate to automatically feed the cutting tools inwardly during the machining operation.

8. In a multiple splining machine, the combination witha base, of a device reciprocable thereon for carrying a shaft in which a plurality of splines are to be formed, a stationary head mounted on the base, having an opening through which the shaft extends, feed blocks radially movable along the stationary head, cutting tools hingedly carried by the feed blocks, a bear ing' in the upper part of the stationary head, a vertical shaftjournaled in said bearing, a bevel pinion mounted on the vertical shaft, a rotatable plate mounted on the stationary head and formed {with spiral threads on their rear faces to engage the threads on the plate, a bevel gear on the plate in mesh with the bevel pinion on the vertical shaft, a ratchet mounted on the latter, a lever pivoted on he vertical shaft,

:1. spring-influenced pawl on said lever for engagement with said ratchet, power means for operating the reclprocable device, and

connecting means between the latter and sa'd lever for the purposespecified.

In testimony whereof I have hereunto set my hand this 12th day ofApril, 1924-.

JOHN A. errors.

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