US2141130A

US2141130A - Guide device

Info

Publication number: US2141130A
Application number: US112588A
Authority: US
Inventors: Findlater Stevenson
Original assignee: National Tube Co
Current assignee: National Tube Co
Priority date: 1936-11-24
Filing date: 1936-11-24
Publication date: 1938-12-20
Anticipated expiration: 1955-12-20

Description

S FINDLATER GUIDE DEVICE Filed Nov. 24, 1936 w w NQ n W T y H w N H m 5 N EW E Tv,

Patented Dec. 20, 1938` UNITED STATES GUIDE DEVICE Stevenson Findlater, McKecsport, Pa., assignor to National Tube Company, a corporation of New Jersey Application November 24, 1936, Serial No. 112,588

3 Claims.

This invention relates to rolling mills, and more particularly to guide devices therefor.

In my co-pending application, Serial No. 100,535 filed September 12, 1936, there is disclosed a guide device for rolling mills and particularly those which roll seamless tubes. The device of the present application is generally similar thereto but includes additional elements which make for greater efliciency.

It is among the objects of the present invention to effectively sectionalize rolling mill guide dcvices and provide for their elcient support as a -unitary structure; the sections being relatively small to eliminate the discard or interchange of l5 more than is necessary.

The foregoing and other objects will be apparent after referring to the drawing, in which: The single figure ls a sectional elevation of the device of the invention as applied to a conventional type of seamless tube mill. i-

Referring more particularly to the drawing, the numerals I and 2 respectively designate the usual upper and lower chairs for the guide devices which are customarily employed intermediate the metal-working rolls of the mill.

According to the teaching of the invention, the upper chair I carries a pair of horizontally extending pins 3 and 4l which are substantially spaced with respect to-each other. The pin 3, which is most adjacent the inlet end of'the mill, carries a movable bellcrank lever 5, one end of which extends rearwardly and horizontally, as

shown at 6. One end of a vertically extending` shaft 1 is pivotally connected, as at 8, to the end shaft 1 is extended through an ear 9 which is integrally formed on the upper chair I. This end of the shaft 1 is screw-threaded to carry an ad- 4o justing nut I0 in contact with the ear 9, whereby the bellcrank lever 5 may be partiallyrotated on the pin 3. The other end of the bellcrank lever 5 extends downwardly, as shown at-'I2, and carries a lrearwardly extending lug I3, whose rearward face I4 ismitered.

- The forward part ofthe upper guide element per se of the invention is shown at I5 as 'comprising a metallic segment which has forward and rearward mitered projections I6 and I1, respectively. This segment I 5 is provided with a recess I8 whose forward wall is mitered, as shown at I8. An insert 20 is disposed in the recess I8 and has a forward mitered projection 2I for contact with the mitered wall. I8 of the recess I8. Between the lower side of the recessed portion Il of (c1. sii-13) the segment I5 and the upper side of the ,there is disposed a. liner 2I.

The forward mitered projection I6 of the segment I 5 is engaged by the mitered face I4 on the bellcrank lever 5. The insert 20 also yhas a rearward mitered projection 22 for a purpose to be later described. y

The rearward pin 4 on the upper chair I carries a bellcrank lever 25, one end of which extends rearwardly and horizontally, as shown at 26. One end of a vertically extending shaft 21 is pivotally connected, as at 28, to the end 26 of the bellcrank lever 25. The other end of the vertical shaft 21 is extended through an ear 29 which is integrally formed on the upper chair I. This end of the shaft 21 is screw-threaded to carryan adjusting nut 30 in contact with the ear 28, whereby the bellcrank lever 25 may be partially rotated on the pin 4. 'I'he other end of the bellcrank lever 25 extends downwardly, as shown at 32, and carries a rearwardly extending lug 33 whose rearward face 34 is mitered.

The rearward part of the upper guide element per se of the invention is shown at 35 as comprising a metallic segment which has upper and lower forward mitered projections 36 and 31 respectively. The upper forward mitered projection 36 is engaged by the mitered surface 34 Aon the rearwardly extending lug 33 on the bellcrank lever 25. The lower forward mitered projection 31 engages the rearward mitered projection 22 of the insert 20 in the segment I5.

'Ihe segment 35 of the upper guide element per se also carries a rearwardly extending mitered projection 38 which makes contact with a forward mitered projection 40 on the `upper chair I. f

Liners 43 are disposed between the upper chair I and theupper surfaces of the segments I5 and 35 to adjust the latter with respect to the ho'rizontal center-line of the pass. `'I'his enables compensation for wear. i

The lower chair of the mill is arranged in sections, as shown at 2 and 2, the former being mounted ona conventional vertical adjusting device. carries a pair of horizontally extending

pins

53 and 54 which are substantially spaced with respect to each other. The pin 58, which -is most adjacent the inlet end of the mill, carries an intermediately pivoted vertically extending lever 55. The vertically extended end 56 of the lever carries a rearward horizontally extending lug .51, the rearward face of which is mitered, as

shown at 58. The downwardly extending end 58' insert 20 Thev forward section 2 of the lower chair u Cal of the vertical lever 55 carries a pin 60 to which there is connected the one end of a forwardly extending rod 6|. The other end of the forwardly extending rod 6| extends out of the forward section 2 of the lower chair and carries an enlarged washer 62 and an adjusting nut 63. The adjusting nut 63 engages the enlarged washer 62 and enables the movement of the forwardly extending rod 6 I.

The forward part of the lower guide element per se is shown at 65 as comprising a metallic segment which has forward and rearward mitered projections 66 and 61 respectively. This segment 65 is provided with a recess 68 whose forward wall is mitered, as shown at 69. An insert is disposed in the recess 68 and has a forward mitered projection 1| for contact with the mitered wall 69 of the recess 68. Between the upper side of the recessed portion 68 of the segment 65 and the lower side of the insert 10 there is disposed a liner 1|a. The forward mitered projection 66 of the segment 65 is engaged by the mitered face 58 on the vertical lever 55. The insert 10 also has a rearward mitered projection 12 for a purpose to be later described.

The rearward pin 54 on the forward section 2 of the lower chair carries a vertically extending lever whose upper end 16 has a rearwardly extending lug 11. The rearward face of this lug 11 is mitered, as shown at 18. A pin 80 is carried on the intermediate portion of the vertical lever 15 for supporting one end of a rearwardly extending rod 8|, the other of which extends through and out of the rearward section 2a of the lower chair.

The rearward part of the lower guide element is shown as comprising a metallic segment 85 which has upper and lower forward mitered projections, 86 and 81, respectively. The upper forward mitered projection 8'6 engages the rearward mitered projection 12 on the insert 10, while the lower forward mitered projection-81 makes contact with the mitered face 18 on the vertically extending lever 15. This segment 85 also carries a rearwardly extending mitered projection 88 which makes contact with a forward mitered projection 89 on the forward section 2 of the lower chair.

Immediately below the position where the extended end of the rod 8| emerges form the rearward section 2a of the lower chair there is disposed an ear 9| on which there is mounted a pin 92. A vertically extending clamp 93 is connected to this pin 92. The upper end of the clamp 93 carries a forwardly extending lug 95 whose forward face is mitered, as shown at 96. The end of the rod 8| which extends through the clamp 93 carries an adjusting nut |00.

The upper surface of the rearward section 2a of the lower chair carries a secondary guide element |02 in the form of a plug trough. This secondary guide element |02 has an intermediate downwardly extending portion |04 which carries a forwardly extending mitered projection |05. This mitered projection |05 makes contact with an rearwardly mitered projection |06 on the section 2"L of the lower chair.

The guide element |02 also carries a downwardly and rearwardly extending lug |01 whose rearward face |08 is mitered for contact with the mitered face 96 of the lug 95 on the clamp 93.

Liners H4, |I3 and ||2 are disposed between the sections 2 and 2 of the lower chair, and the `lowr surfaces of theA respective elements 65, 85

and 02, to adjust them with respect to the horizontal center line of the pass.

It is to be noted that the segments |5 and 65, inserts and 10 and

segments

35 and 85 are identical and therefore interchangeable, whereby complexity is avoided.

While I have shown and described one specific embodiment of my invention, it will be understood that I do not wish to be limited exactly thereto, since various modifications may be made without departing from the scope of my invention, as dened by the following claims.

I claim l. 'Ihe combination with an axial tube rolling mill of upper and lower oppositely disposed workpiece guide devices disposed intermediate the metal work rolls, comprising a pair of oppositely disposed supports, a stationary guide element in each of said supports, means for holding said guide elements in contact with their respective supports, a second stationary guide element in each of said supports, means for moving said second named guide elements towards the said rst named guide elements and an insert carried by each of the said second named guide elements, said inserts being constructed and arranged to be rigidly held in position within their respective guide elements and against said first named guide elements by moving said .second named guide elements toward the said first named guide elements.

2. The combination with an axial tube rolling mill of upper and lower oppositely disposed Workpiece guide devices disposed intermediate the metal-working rolls comprising a pair of oppositely disposed supports, means for holding said guide elements in contact with their respective supports, a second stationary guide element in each of said supports, means for moving said second named guide elements towards the said first named guide elements, and an insert carried by each of the said second named guide elements, said inserts being constructed and arranged to be rigidly held in position within their respective guide elements and against the said first named guide elements by moving said named guide elements toward the said first named guide elements, the contacting surfaces of said inserts and said first and second named guide elements being mitered. v

3. The combination with an axial tube rolling mill of a stationary work-piece guide device disposed intermediate the metal-working rolls comprising a support, a stationary guide element. means for holding said guide element in contact with said support, a second stationary guide element, means for moving said second-named guide element towards said rst named guide element. and an insert carried by said second-named guide element, said insert being constructed and arranged to be rigidly held in position on said second named guide element and against said :drst named guide element by moving said second named guide element toward the rst named guide element, the contacting surfaces of said insert and said first and second named guide elements being mitered.

STEVENSON FINDLATER.