WO1990014524A1 - Came de blocage reglable - Google Patents

Came de blocage reglable Download PDF

Info

Publication number
WO1990014524A1
WO1990014524A1 PCT/AU1990/000205 AU9000205W WO9014524A1 WO 1990014524 A1 WO1990014524 A1 WO 1990014524A1 AU 9000205 W AU9000205 W AU 9000205W WO 9014524 A1 WO9014524 A1 WO 9014524A1
Authority
WO
WIPO (PCT)
Prior art keywords
adjustable locking
assembly
sleeve member
locking member
cam surface
Prior art date
Application number
PCT/AU1990/000205
Other languages
English (en)
Inventor
Ronald Henry Alexander Bushell
Wilhelmus Johanus Maria Klessens
Original Assignee
The Broken Hill Proprietary Company Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by The Broken Hill Proprietary Company Limited filed Critical The Broken Hill Proprietary Company Limited
Priority claimed from AU57327/90A external-priority patent/AU636353B2/en
Publication of WO1990014524A1 publication Critical patent/WO1990014524A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/07—Adaptation of roll neck bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
    • F16C13/02—Bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/063—Fixing them on the shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2322/00—Apparatus used in shaping articles
    • F16C2322/12—Rolling apparatus, e.g. rolling stands, rolls

Definitions

  • the present invention relates to an adjustable locking cam assembly for locking a bearing or similar structure on a shaft and relates particularly, but not exclusively, to such an assembly for locking roller bearings on a roll shaft of the kind used in mill stands in the steel industry.
  • roller bearings on the rolls instead of the original fabric and wood bearings. These bearings were provided with stainless steel roller bearing adjusting lock nuts for retaining the bearings at both ends of the roll shaft.
  • the roll shaft is typically provided with an annular channel at both ends, in which the two halves of a split ring are received to form a circular ring provided with an external screw-thread on its outer circumferential surface.
  • One half of the split ring is provided with a key-way on its inner circumference, that aligns with a matching key-way provided in the channel on the shaft. A relatively small key fits into the aligned key-ways to prevent rotation of the split ring in the channel.
  • the two halves of the split ring are held together by a ring-shaped adjusting nut, provided with an internal screw-thread that engages with the external screw-thread of the split ring.
  • a ring-shaped adjusting nut provided with an internal screw-thread that engages with the external screw-thread of the split ring.
  • the adjusting nut When the adjusting nut is received onto the external screw-thread of the split ring, it can be screwed on tightly against one or more spacer rings, located between it and the roller bearing, to a locked position, where it prevents axial movement of the roller bearing on the roll shaft.
  • Both the split ring and the adjusting nut are made from like material, namely stainless steel.
  • the present invention was developed with a view of overcoming one or more of the above problems with the existing roller bearing adjusting lock nuts, and to provide an adjustable locking cam assembly that would facilitate more efficient change over of the bearings from one pair of rolls to the next pair.
  • the invention was developed specifically with this application in view, it became apparent that the adjustable locking cam assembly would have wider application in other similar situations where bearings need to be adjusted for thrust, or for locking roll sleeves and the like to mandrils.
  • an adjustable locking cam assembly for locking a bearing or similar structure on a shaft, the assembly comprising: a sleeve member adapted to be received on the shaft and to engage with the shaft so as to prevent axial movement of the assembly relative to the shaft in its locked position, said sleeve member being provided with a cam surface on an outer circumferential surface of the sleeve member; and, an adjustable locking member adapted to be rotatably received on said outer surface of the sleeve member and having a cam surface provided on an end face of the adjustable locking member whereby, in use, when said adjustable locking member is received on the sleeve member and rotated, said cam surface slidably engages with the cam surface on the sleeve member, to cause axial movement of the adjustable locking member towards a locked position, in which the adjustable locking member thrusts against the bearing or similar structure on the shaft.
  • cam surface on the sleeve member is a helical cam surface
  • cam surface on the adjustable locking member is preferably a matching helical cam surface
  • said sleeve member comprises first and second halves of semi-circular shape, wherein the two halves are held together by said adjustable locking member in the form of a hollow cylinder, when the assembly is in its assembled condition.
  • said sleeve member is provided with an annular portion projecting radially inwardly, said annular portion being adapted to engage with an annular channel provided in the shaft so as to prevent axial movement of the assembly relative to the shaft in its locked position.
  • said adjustable locking member also comprises first and second halves of semi-circular shape, wherein the two halves are held together by fastening means to form a circular ring, when the assembly is in its assembled condition.
  • said fastening means is adjustable fastening means whereby, in use, the fastening means can be loosened to allow the adjustable locking member to rotate on the outer surface of the sleeve member, and whereby the fastening means can be tightened when the ring member thrusts against the roller bearing or similar structure to lock the assembly in its locked position.
  • the helical cam surface on the sleeve member and the matching cam surface on the adjustable locking member are preferably each provided in two sections, a respective first section on the first halves of the sleeve member and the adjustable locking member respectively, and a respective second section on the second halves of the sleeve member and adjustable locking member respectively.
  • Figure 1 illustrates one end of a roll shaft showing a roller bearing and a preferred embodiment of the locking cam assembly in section view;
  • Figures 2(a), (b) and (c) illustrate a sleeve member in the preferred embodiment of Figure 1;
  • Figures 3(a) and (b) illustrate a key member in the preferred embodiment;
  • FIGS. 4(a), (b) and (c) illustrate an adjustable locking member in the preferred embodiment
  • Figures 5(a) and (b) illustrate a seal running ring in the preferred embodiment
  • Figures 6(a) and (b) illustrate a spacer ring in the preferred embodiment of Figure 1.
  • FIG 1 illustrates a preferred embodiment of the adjustable locking cam assembly 10 fitted on a roll shaft 12 of a roll 14 of the kind employed in mill stands used in steel rolling mills.
  • the roll 14 is rotatably supported at both ends in a mill stand on two roller bearings similar to roller bearing 16.
  • roller bearing 16 On one side of roller bearing 16 is a fixed roll spacer 18, and on the other side immediately adjacent is a ball-bearing 20.
  • seal running ring 22 As in the prior art arrangement, and a spacer 24 through which any thrust from assembly 10 can be transferred to the bearings 16 and 20.
  • the shape and configuration of the seal running ring 22 and spacer 24 can be seen more clearly in Figures 5 and 6 respectively.
  • the adjustable locking cam assembly 10 comprises a sleeve member 26 adapted to be received on the roll shaft 12 and to engage with the roll shaft so as to prevent axial movement of the assembly 10 relative to the shaft 12 in its locked position.
  • the sleeve member 26 is provided with a helical cam surface 28 standing out substantially perpendicularly from the outer circumferential surface 30 of the sleeve member 26.
  • Sleeve member 26 is further provided with an annular portion 32 projecting radially inwardly and being adapted to engage with an annular channel 34 provided in the shaft 12 the annular channel 34 prevents axial movement of the assembly 10, relative to the shaft 12, when the assembly is in its locked position (as illustrated in Figure 1) , since the projecting portion 32 engages with one side wall of the channel 34.
  • Rotation of the sleeve member 26 on shaft 12 is prevented by a key 36 which is received in a key-way 38 cut out of the projecting portion 32 of the sleeve member.
  • a matching key-way 40 is provided in the opposite side wall of the channel 34.
  • Key 36 is preferably provided in two pieces, and the second piece 42 protrudes outwardly from the outer circumferential surface of shaft 12 to engage in another key-way 44 provided in the seal running ring 22. Keys 36 and 42 are illustrated in Figures 3(a) and (b) respectively. The configuration of sleeve member 26 can be more clearly seen in Figures 2(a), (b) and (c) .
  • the sleeve member 26 comprising first and second halves 46 and 48 respectively, is illustrated in end view. Key-way 38 in the first half 46 of sleeve member 26 can be clearly seen in Figure 2(a) .
  • the two halves of sleeve member 26 are semi-circular in shape and are produced by splitting the ring member 26 on a band-saw through the line V-V after final machining as shown. Material removed by sewing is replaced with welding so that both halves 46 and 48 when clamped together form a perfect hollow circular cylinder.
  • the inner circumferential surface 50 of annular projecting portion 32 is machined to be received in the annular channel 34 in the roll shaft 12. Cut-out portions 52 are merely provided to simplify the assembly of the two halves of sleeve member 26 on the roll shaft 12.
  • Figure 2(b) is a section view of the two halves 46 and 48 of the sleeve member taken through the line W-W in Figure 2(a) .
  • Figure 2(b) it can be seen how the helical cam surface 28 of the sleeve member is provided in two sections, a first section on the first half 46 of the sleeve member and a second section on the second half 48 of sleeve member.
  • Each section of the helical cam surface 28 rises 10mm from its lowest to its highest point through 180°.
  • the profile of helical cam surface 28 can also be clearly seen in Figure 2(c) which is a view taken through the line V-V in Figure 2(a) .
  • the adjustable locking cam assembly 10 further comprises an adjustable locking member 60 adapted to be rotatably received on the outer circumferential surface 30 of the sleeve member 26.
  • Adjustable locking member 60 is provided with a matching helical cam surface 62 on one end face thereof whereby, in use, when the adjustable locking member 60 is received on the sleeve member 26 and rotated, the matching helical cam surface 62 slidably engages with the helical cam surface 28 of the sleeve member to cause axial movement of the adjustable locking member 60 towards a locked position. In the locked position the adjustable locking member 60 thrusts against the ball bearing 20 through spacer 24 and seal running ring 22.
  • Adjustable locking member 60 also preferably comprises first and second halves 64 and 66 respectively of semi-circular shape, as can be seen more clearly in Figure 4(a).
  • the two halves 64 and 66 of the adjustable locking member 60 are held together by fastening means (not illustrated) to form a circular ring, when the assembly 10 is in its assembled condition.
  • Two fastening means are preferably provided in the form of two socket head cap screws or bolts received in bores 68 extending tangentially through the two halves of the adjustable locking member 60.
  • the bores 68 are provided in an annular portion 70 which projects from the outer circumferential surface of the adjustable locking member 60 as can be seen most clearly in Figures 4(b) and (c) .
  • Figure 4(b) is a side view of the second half 66 of the adjustable locking member 60 viewed along the line Y-Y in Figure 4(a).
  • the profile of the matching helical cam surface 62 on the end face of the adjustable locking member half 66 is clearly visible in Figure 4(b).
  • the matching cam surface 62 provided on adjustable locking member half 66 rises 10mm through 180°.
  • Matching helical cam surface 62 is also provided in two sections on the respective halves 64 and 66 of the adjustable locking member 60 as can be seen more clearly in Figure 4(c) .
  • Figure 4(c) is a section view of the two halves of the adjustable locking member 60 taken through the line X-X in Figure 4(a).
  • the two halves 64 and 66 of the adjustable locking member 60 are provided with a 3mm gap therebetween when the two halves are placed together in the form of a circular ring.
  • the aligned bores 68 in the respective halves 64 and 66 of the adjustable locking member can be seen in broken outline.
  • the bore 68 provided in the first half 64 of the adjustable locking member is threaded to receive the socket head cap screw or bolt in screw-threaded engagement whereby, in use, the screw or bolt can be loosened or tightened to lock the adjustable locking member 60 onto the outer circumferential surface 30 of the sleeve member 26 when the adjustable locking cam assembly 10 is in its assembled condition.
  • the 3mm gap enables the two halves 64 and 66 of the adjustable locking member 60 to be locked tightly to the outer circumferential surface 30 of the sleeve member 26 when the screws in bores 68 are .tightened.
  • the screws received in bores 68 therefore perform three functions, namely holding the first and second halves of the adjustable locking member 60 together and, when the adjustable locking member 60 is received on the outer circumferential surface 30 of the sleeve member 26, they also hold the two halves 46 and 48 of the sleeve member together.
  • the screws lock the two halves 64 and 66 of the adjustable locking member 60 onto the outer circumferential surface of the sleeve member whereby the adjustable locking member 60 cannot be rotated relative to the sleeve member 26.
  • Cut-out portions 72 in the annular projecting portion 70 of the locking member 60 are provided to facilitate rotation of the locking member 60 relative to the sleeve member 26 when the fastening means are loosened. The process of removing the bearings from the roll shaft 12 will now be described with reference to Figure 1.
  • FIG. 1 the adjustable locking cam assembly 10 is illustrated in its locked position wherein the adjustable locking member 60 has been rotated to thrust against the spacer ring 24 through the lifting action provided by the sliding engagement of the respective cam surfaces.
  • the assembly has been locked in position by tightening the fastening means received in bores 68 of the locking member 60.
  • the first step in removing the bearings 16 and 20 from the roll shaft 12 is to loosen the fastening means in bores 68 of the locking member 60 when the fastening means in bores 60 are loosened the locking member 60 can be rotated in the anti-clockwise direction on the outer circumferential surface 30 of the sleeve member 26, thus releasing the thrust on the bearings through spacer 24 and seal running ring 22.
  • the two halves 64 and 66 of the locking member 60 may be separated, and immediately thereafter or simultaneously the two halves 46 and 48 of the sleeve member 26 can also be separated and removed from the roll shaft 12.
  • Spacer 24 can then be slid off the roll shaft 12, and it is then a relatively simple operation to remove the keys 42 and 36 from their respective key-ways and to slide the seal running ring 22 over the roll shaft 12 in like manner.
  • the roller bearing 16 and ball-bearing 20 may then be slid off the roll shaft 12 and changed over to another roll shaft as required.
  • the process of replacing the bearings and the adjustable locking cam assembly 10 onto a roll shaft is simply the reverse of the above described operation.
  • the adjustable locking cam assembly greatly facilitates rapid change over of bearings from one roll shaft to another.
  • the new adjustable locking cam assembly is more difficult to manufacture, and generally requires greater precision due to the limited amount of adjustment obtained from the cams compared with the old threaded system, it is much simpler to assemble and disassemble and cannot work off during use in the way the old threaded system could.
  • the assembly according to this invention does facilitate more efficient change over of the bearings of one pair of rolls to the next pair.
  • the adjustable locking cam assembly of the invention can have applications in other areas where bearings need to be adjusted for thrust, or for locking sleeves onto rolls or shafts.
  • numerous variations and modifications may be made to the described assembly, other than those already described, without departing from the basic inventive concepts.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Abstract

La came de blocage réglable (10) sert à bloquer des roulements à rouleaux (16) aux deux extrémités d'un arbre (12) d'un cylindre (14) du type utilisé dans les cages à colonnes des installations de laminage de l'acier. La came de blocage (10) comprend un manchon(26) présentant une surface de came hélicoïdale (28) s'étendant perpendiculairement à partir de la surface circonférentielle externe (30) du manchon (26). La came de blocage (10) comprend en outre un élément de blocage réglable (60) placé rotatif sur la surface circonférentielle externe (30) du manchon (26) et présentant une surface de came hélicoïdale correspondante (62), qui est en contact coulissant avec la surface de came hélicoïdale (28) du manchon (26), afin d'imprimer un mouvement axial à l'élément de blocage réglable (60) en direction d'une position bloquée. Dans la position bloquée, l'élément de blocage réglable (60) exerce une pression contre le roulement à rouleau (16) par l'intermédiaire d'un roulement à billes (20), d'une pièce d'espacement (24) et d'un anneau d'étanchéité mobile (22). L'élément de blocage réglable (60) se compose de deux moitiés maintenues ensemble par deux boulons introduits dans des trous (68). Les deux boulons permettent également le blocage de l'élément de blocage (60) dans la position bloquée, ce qui bloque le roulement à rouleaux (16) sur l'arbre (12). La came de blocage réglable (10) facilite un passage plus rapide et plus efficace des roulements (16) d'une paire de cylindres à la paire suivante.
PCT/AU1990/000205 1989-05-18 1990-05-18 Came de blocage reglable WO1990014524A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AUPJ424389 1989-05-18
AUPJ4243 1989-05-18
AU57327/90A AU636353B2 (en) 1989-05-18 1990-05-18 Adjustable locking cam assembly

Publications (1)

Publication Number Publication Date
WO1990014524A1 true WO1990014524A1 (fr) 1990-11-29

Family

ID=25631595

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1990/000205 WO1990014524A1 (fr) 1989-05-18 1990-05-18 Came de blocage reglable

Country Status (2)

Country Link
EP (1) EP0472606A4 (fr)
WO (1) WO1990014524A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2148044A1 (es) * 1996-08-16 2000-10-01 Seeger Orbis Cmbh & Co Ohg "manguito de apriete y procedimiento para su fabricacion".
CN102374132A (zh) * 2010-08-26 2012-03-14 哈尔滨建成集团有限公司 轴承座固定及中心调整装置
GB2537378A (en) * 2015-04-14 2016-10-19 Primetals Tech Ltd Bearing system and method
WO2018002218A1 (fr) 2016-06-29 2018-01-04 Macgregor Norway As Échange de douille dans un tambour

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1821877A (en) * 1930-05-28 1931-09-01 Split Ballbearing Corp Locking device for antifriction bearing rings
US3912345A (en) * 1973-08-31 1975-10-14 Republic Steel Corp Bearing chocking assembly for mill rolls

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1821877A (en) * 1930-05-28 1931-09-01 Split Ballbearing Corp Locking device for antifriction bearing rings
US3912345A (en) * 1973-08-31 1975-10-14 Republic Steel Corp Bearing chocking assembly for mill rolls

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2148044A1 (es) * 1996-08-16 2000-10-01 Seeger Orbis Cmbh & Co Ohg "manguito de apriete y procedimiento para su fabricacion".
CN102374132A (zh) * 2010-08-26 2012-03-14 哈尔滨建成集团有限公司 轴承座固定及中心调整装置
GB2537378A (en) * 2015-04-14 2016-10-19 Primetals Tech Ltd Bearing system and method
GB2537378B (en) * 2015-04-14 2017-04-26 Primetals Tech Ltd Bearing system and method
US10184516B2 (en) 2015-04-14 2019-01-22 Primetals Technologies, Limited Bearing system and method
WO2018002218A1 (fr) 2016-06-29 2018-01-04 Macgregor Norway As Échange de douille dans un tambour

Also Published As

Publication number Publication date
EP0472606A1 (fr) 1992-03-04
EP0472606A4 (en) 1993-03-10

Similar Documents

Publication Publication Date Title
CA2565903C (fr) Ensemble de palier de verrouillage conique
US4240677A (en) Bearing mounting device and bearing
AU689993B2 (en) Bearing assembly utilizing improved clamping arrangement
US3847495A (en) Symmetrical hub-to-shaft connection
US5735788A (en) Simple clamp type mill roll
US4966474A (en) Lockable nut for axial adjustment
US4267759A (en) Tool safety lock ring
EP0316417B1 (fr) Dispositif de jointure
USRE33490E (en) Apparatus to mechanically stress a bolt-type fastener
US3803691A (en) Means for mounting a work roll on a shaft
US6375383B1 (en) Attachment device
US4136989A (en) Expandable annular cam-type locking device for a shaft
US5269607A (en) Bearing assembly with locking device
US3739722A (en) Print roll and mounting means
WO1990014524A1 (fr) Came de blocage reglable
US4733458A (en) Bayonet coupling for axially mounting a ring-shaped member on a shaft stub
US4547997A (en) Adjustable tool mount
AU636353B2 (en) Adjustable locking cam assembly
AU685847B2 (en) Locking device for use with shafts or tubes
EP1262678A2 (fr) Une unité d'attachement
US5154518A (en) Ring structure for bearing chocking assembly
US3535008A (en) Rolling mill roll bearing retainer
USRE29968E (en) Means for mounting a work roll on a shaft
GB2162098A (en) Chuck assembly
US20060093251A1 (en) Bearing assembly

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AT AU BB BG BR CA CH DE DK ES FI GB HU JP KP KR LK LU MC MG MW NL NO RO SD SE SU US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE BF BJ CF CG CH CM DE DK ES FR GA GB IT LU ML MR NL SE SN TD TG

WWE Wipo information: entry into national phase

Ref document number: 1990908165

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

WWP Wipo information: published in national office

Ref document number: 1990908165

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: CA

WWR Wipo information: refused in national office

Ref document number: 1990908165

Country of ref document: EP

WWW Wipo information: withdrawn in national office

Ref document number: 1990908165

Country of ref document: EP