US2514157A

US2514157A - Roller-bearing spindle

Info

Publication number: US2514157A
Application number: US721099A
Authority: US
Inventors: Hilton John Leslie
Original assignee: HOFFMANN TWEEDALES Ltd
Current assignee: HOFFMANN TWEEDALES Ltd
Priority date: 1946-03-13
Filing date: 1947-01-09
Publication date: 1950-07-04
Anticipated expiration: 1967-07-04
Also published as: BE471745A; FR942598A

Description

J. L. HILTON ROLLER BEARING 'SPINDLE July 4, 1950 3 Sheets-Sheet 1 Filed Jan. 9, 1947 y 1950 J. HILTON 2,514,157

ROLLER BEARING SPINDLE Filed Jan. 9, 1'94! 3 Sheets-Sheet 2 /l9 49 2 l a 21 26 5 2eii 22 E i k 26 25 25 fig. 4. 5.

MN 30 14 55 r A 74\ 17 f 7.

Attorneys y 4, 1950 '7 J. HILTON 2,514,157

ROLLER BEARING SPINDLE I Filed Jan. 9, 1947 3 Sheets-Sheet 3 Inventor A llorneys Patented July 4, 1950 ROLLER-BEARING SPINDLE John Leslie Hilton, Boreham, England, assignor to Hoilmann Tweedales Limited, Chelmsford,

England Application January 9, 1947, Serial No. 721,099 In Great Britain March 13, 1946 7 Claims. 1

This invention relates to spindles for spinning machines, doubling machines and other machines for the treatment of spun textile flbres or filaments, and refers more particularly to high-speed spindles of the type embodying a roller-bearing insert.

As generally constructed a roller-bearing insert for a spindle is machined from solid bar stock or fabricated from steel tubing.

In one known construction of roller-bearing insert, for a spindle of the ring-brake type, the head for receiving the roller race and the body or pillar, hereinafter for convenience referred to as the body, are machined in one piece from a length of solid bar stock of a size sufllcient to allow for the formation of the head, which is of larger diameter than the body, thereby incurring a waste of metal, the body being bored to the required diameter to receive the spindle, and at its lower end being formed with a shoulder to provide an abutment for a footstep driven in from the bottom and secured in position by clinching the lower end of the tubular body over the adjacent end of the footstep, whil the head is bored to the required diameter to receive the roller race, which is secured in position in the head by clinching the upper end of the tubular head over the upper end of the roller hearing. A tongue is stuck-out from the wall of the body to provide a projection to prevent turning movement of the roller-bearing insert relatively to the bolster. (The terms upper and "lower refer to the relative locations of the parts when the spindle is in running position.)

In a further known form of roller-bearing insert as used for spindles for machines for working with rayon fibres, the head and the body of the roller-bearing insert are machined in one piece from a solid bar, the body being formed with an intermediate tapered portion of larger diameter than the lower portion to provide a taper fitting surface for the insert, which is a press fit into the bolster. A groove or slot is machined into the side of the tapered portion to provide a drain for spent oil. The roller race and the footstep are secured in their respective positions in similar manner to that before-debody of the roller-bearing insert is fabricated l! from a steel tube which requires to be machined, while the head to receive the roller race is a separate machined part subsequently brazed onto the body. The footstep, usually made of bronze, is fixed in the body by means of a screw-threaded sleeve at the bottom, said sleeve being finallyv secured in position by splaying the lower end of the body into a slot in the end of said sleeve. The holding ring is made from steel tubing and has one slot to receive the anti-rotation projection on the body and the point of the retaining screw of the bolster.

The lower ring has oil drain-oil slots machined in the outer surface thereof.

A roller-bearing insert formed as last described entails a considerable amount of machining and assembling.

Further, the thickness of the wall of the body in inserts as described reduces the space available for oil contained in the base of the bolster.

This invention overcomes the disadvantages of the roller-bearing inserts described and reduces machining to a minimum by providing a simplified constructionof roller-bearing inserts in which the body is formed as a deep drawn pressing flanged at its upper part, the head being a separate machined part, shouldered to form a seating for the flanged body, the body and the head being held together by clinching the roller race in the head above the flange, thus obviating welding, brazing or screwing; or the body and head may be formed throughout as a single deep drawn pressing, the roller race being clinched in the head.

The present invention has for a principal object the provision of a spindle for textile machinery including a bolster housing a roller-bearing insert having a body formed as a relatively thin walled deep drawn pressing, a head for receiving a roller race, a roller race disposed in said head, a footstep located in the lower part of said body, in which the body, head, roller race and footstep are secured together as a unit without welding, brazing or screwing.

A further object of the invention is the pro-.

vision of a spindle of the ring-brake type including a bolster housing a roller-bearing insert having a body formed as a, relatively thin walled deep drawn pressing, the upper part of the body being formed to provide an annular flange, a head to receive a roller race, said head being machined from a solid bar or tube, and having in its upper part a cylindrical housing for said roller face, an intermediate hemi-spherical part and a lower cylindrical neck, the bore of which is adapted to fit the body closely when the machined head is placed thereon, the aforesaid flange of the body fitting against an annular shoulder resulting from the difference in the internal diameters of the bore of the neck and the housing for the roller race, a tongue provided in the upper part of a locking ring slid on to the body, being engageable with an openended slot formed in the wall of the neck, a. compression spring strung on said body between said locking ring and a washer and a brake sleeve also strung on said body, a retaining washer swaged on the lower end of said body, a footstep located in the lower end of said body, a roller race located in the head and secured therein by clinching the upper end of the head over the upper edge of the roller race, and means for preventing turning movement of the rollerbearing insert relatively to the bolster.

A further object of the invention is the provision of a spindle of the type for working with rayon fibres, including a bolster housing a rollerbearing insert in which the body and the head or receiving the roller race are formed integrally as a single relatively thin walled deep drawn pressing, a roller race being secured in the head between a shoulder formed at ine junction of the said head with the body and the turned-over end of said head, an intermediate tapered part of the body being formed with an indentation to receive the end of a retaining screw for preventing turning movement of said body relatively to said bolster and with at least one longitudinal indented groove, or, alternatively, drain holes, to drain off spent oil, and a footstep secured in the lower part of said body.

Some practical embodiments of the invention will now be described by way of example, reference being made to the accompanying drawings in which the same reference characters indicate corresponding parts in the several figures of the drawings.

In the drawings, Fig. 1 is a side elevation, partly sectional, of a spindle of the ring-brake type embodying a roller-bearing insert constructed according to the invention and applied to a bolster, the spindle being shown broken to shorten the figure; Fig. 2 is a fragmentary sectional view showing a modified construction later to be described; Fig. 3 is a side elevation of the body or pillar of the roller-bearing insert illustrated in Fig. 1, shown separate; Fig. 41 is a side elevation of the head of the roller-bearing insert to receive the roller race, and a co-operating locking ring, also shown detached; Fig. is a vertical sectional view of the head and the ring shown in Fig. 4; Figs. 4 and 5 showing the formation of the head before the roller race is inserted; Fig. 6 is a fragmentary sectional view, drawn to a larger scale, of the lower part of Fig. 1, showing the mode of securing the brake ring to the body or pillar and also the footstep in the said body or pillar by a single retaining washer; Fig. 7 is a sectional elevation of a spindle for working with rayon fibres and a roller-bearing insert constructed according to the invention applied to a bolster; the spindle being shown broken to shorten the figure; Fig. 8 is a side elevation and Fig. 9 a vertical sectional view of the combined body and head of the roller-bearing insert illustrated in Fig. '7, shown separate.

Referring to Figs. 1 to 6, 10 indicates a bolster secured in a bolster rail Ii by means of a nut l2 and washer 13 in known manner. I indicates the body of the roller-bearing insert which is 4 formed as a single deep drawn pressing and flared at its upper end to form an annular dished flange l5, as shown in Figs. 2 and 3, the lower end of the body being inturned, as indicated at IE, to provide attachment means for a retaining washer l1, later to be described.

[8 indicates the head for receiving a roller race, said head being machined from a solid bar, or tube, to provide a cylindrical housing I! for the roller race 20', an intermediate hemi-spherical portion 2! and a lower cylindrical neck 22, the bore of which is adapted to fit the neck ll of the body II when the head I8 is placed thereon.

The neck i4 is formed in the pressing operation oi. a diameter veryslightly greater than the diameter of the remainder of the body H in order to accommodate the contraction of the said body when it is pressed into the head l8, and thereby to facilitate the subsequent passage of {age footstep as it is pressed into position in the A groove or notch 23 is formed in the lower part of the neck 22 of the head i8 adapted for engagement by'a tongue 24 formed on a locking ring 25 arranged to fit the body I! below the head l8. The lockin ring 25 is formed on the side opposite to the projection 24 with a notch 26 into which projects the end of a retaining screw 21 provided in the bolster l0 whereby to prevent turning movement of the locking ring 25 relatively to the bolster, the projection 24 in the notch 23 thereby preventing turning movement of the body l4 and the head 18 when the roller-bearing insert is in position in the bolster. The locking ring 25 may be formed from a piece of sheet metal as indicated by dot-and-dash lines at 25* in Fig. 4, the chamfered corners 26 forming the groove 26 when the plate 25 is rolled into cylindrical shape.

The roller race 20 is secured in the head l8 by inturning the upper end of the cylindrical part I!) as indicated at i9 Fig. 1, the flange 15 of the body l4 bein clamped between the bottom of the roller race and a conical seating 2|. formed in the head l8, whereby the head I8 is securely held to the body 14. When in position in the bolster Ill the hemi-spherical portion 2| of the head l8 rests on a seating Ill formed in the upper part of the bolster ill, see Fig. 1.

A coil spring 28 surrounding the body I4 is held in compression between a washer 29 and the brake sleeve 30 which is fitted loosely around the body I and held thereon by the retaining washer I! previously referred to.

The retaining washer I1 is secured to the lower end of the body H by a part ll being swaged over the inturned end It oi the body H, see Fig. 6.

A footstep 3! is pressed into the body II from the upper end down to the lower end of the body [4 until the lower end of the footstep rests on the lip formed by the swaged over part II of the retaining washer H, see Fig. 6.

It will be seen that the body, head, roller race and footstep are secured together as a unit without the necessity for welding, brazing or screwing or other extraneous means.

The body I4 is formed with holes l4, see Fig. 3, in order that lubricant contained in the bolster l0 may pass to the spindle 32, the footstep 3| also being formed with passages as 33 for escape of lubricant.

The body [4' being'formed as a deep drawn pressing, the walls of said body are thinner than is practicable when the body is machined from a solid bar, or from a tube, thereby affording greater space for oil to be contained in the base of the bolster l0.

The spindle 32, which is shown broken in Fig. 1, to shorten the figure, provided with the usual wharve 33, and the bolster I is provided with the usual retaining hook 34-.

Instead of the dish-shaped flange IS the body ll may be formed with a plain flange I, see Fig. 2, and the roller race 20 being placed in the housing l9 of the machined head 18 and resting on the flange the upper end 19 of the head is clinched over the upper edge of the roller .race 20, whereby the head I8 is firmly secured to the body It.

Referring to Figs. 7, 8 and 9,35 indicates the bolster and 36 the spindle wh ch is broken to shorten the figure. 31 indicates the body of the roller-bearing insert and 38 the head for receiving the roller race 39, the body and the head being formed integrally as a relatively thinwalled deep drawn pressing.

The bod 31 is formed of two diameters, the lower part of the smaller diameter being intumed at its lower end 39 to form an abutment for the footstep 40 which is pressed down from the upper end of the body.

The intermediate part 3'! of the body is slightly tapered and is adapted to be a tight press fit in the bolster 35. If desired the body may be formed with an indentation to receive the end of a retaining screw screwing through the bolster whereby to restrain the body against turning movement relatively to the bolster. The part 31 is formed with a, longitudinal groove indicated at 42, Fig. 8, to drain ofi spent oil; or, alternatively, drain holes may be provided as indicated at 43, Figs. 7 and 9.

The roller race 39 is secured in the head 38 between a shoulder 38* formed at the junction of the head 38 with the body and the turned over end 38'' of said head, a washer 44 being interposed between the roller race 39 and the shoulder 38 and a further washer 45 being interposed between theshoulder 38 and the upper end of the bolster 35.-

Roller-bearing inserts as described are simple and less expensive in construction, lighter in weight and more effectively lubricated than roller-bearing inserts constructed as hitherto from solid bar or tube stock.

What is claimed is o 1. A spindle structure comprising a bolster, a bearing insert mounted in and supported by the bolster, said insert including an annular bearing head and a body portion comprising a thin-walled deep-drawn tubular metal body having an outwardly flaring flange at its upper end, a bearing unit mounted in the bearing head, a iootstep bearing mounted in the lower portion of said tubular body, a spindle extending through the bearing unit in the bearing head and resting in the iootstep bearing in the lower portion of the tubular body, said annular bearing head having a downwardly extending portion surrounding the upper end portion 01' said tubular body and including an inwardly projecting shoulder on which said flange rests, a locking ring around the tubular body within the bolster, means on the bolster for holding the locking ring against rotation with respect to the bolster, and means for keying the locking ring to the annular bearing head to prevent rotation 01 the bearing head with respect to the bolster. I

5 bearing head.

3. A spindle structure as claimed in claim 1 characterized by including a retaining ,washer secured to the lower end of said tubular body, a sleeve surrounding the tubular body and rest- 10 ing upon said washer and a. compression spring aroundv the tubular body between the locking ring and the sleeve.

4. A spindle structure as claimed in claim 1 in which said bearing unit includes means en- 15 gaging the upper portion of the flange on the tubular body, and means on the upper portion of the annular bearing head for holding the hearing unit against said flange.

5. In a spindle structure of the type including a. bolster, a bearing insert mounted in and supported by the bolster, and a spindle mounted in the bearing insert, the improvement in which said bearing insert includes an assembly comprising an annular bearing head, a bearing unit mounted in the upper portion of the bearing head, an elongated tubular body having an outwardly flaring flange at its upper end carried by said annular bearing head, said annular bearing head having a portion extending downwardly from said bearing unit and surrounding the upper portion of said tubular body including an inwardly projecting shoulder on which the flange of the tubular body rests, a locking ring around the tubular body below said annular bearing head,

5 means for keying the locking ring to the annular 6. A spindle structure as claimed in claim 5 characterized by including a retaining washer secured to the lower outer portion of the tubular body, and a compression spring around the tubular body above the retaining washer and engaging the lower portion 01' the locking ring for holding the latter in keying relationship with respect to the annular bearing head.

'7. A spindle structure as claimed in claim 5 in which said annular locking ring is a split ring 5 having a notch at the upper portion of the split in the ring, said means on the bolster engaging in said notch.

JOHN LESLIE HILTON.

REFERENCES CITED The following references are 01' record in the file of this patent: I

UNITED STATES PATENTS Number Name Date 841,485 Chapman Jan. 15, 1907 1,072,573 Chapman Sept. 9, 1918 1,631,736 Kirner June 7, 1927 1,643,685 Stahlecker 'Sept. 27, 1927 2,025,787 Stahlecker et a1. Dec.'31, 1935 2,051,641 Magrath Aug. 18, 198B 2,093,255 Stahlecker. Sept.-17, 1937 2,097,797- .Magrath Nov. 2, 1987 FOREIGN PATENTS- Number Country': Date 428,075 Germany Apr. 22, 1928- 429,671

Germany June 1, '1926