IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0751663
(2000-12-29)
|
발명자
/ 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
4 |
초록
▼
A roller assembly for use as a back-up roller for work rolls. The roller assembly comprises an axle, a roller rotatably mounted on the axle, a plurality of bearing elements rotatably positioned between the axle and roller, and at least one bushing which is eccentric to the axle and which is fixedly
A roller assembly for use as a back-up roller for work rolls. The roller assembly comprises an axle, a roller rotatably mounted on the axle, a plurality of bearing elements rotatably positioned between the axle and roller, and at least one bushing which is eccentric to the axle and which is fixedly mounted on the axle. The eccentric bushing is rotatable for translating the roller in a radial direction thereof. In order to rotate the bushing in one of opposite circumferential directions, preferably, force is applied to a respective one of a pair of terminal ends of a groove which extends circumferentially in a radially outer surface of the eccentric bushing. Each of the axle and roller, which serve as inner and outer races respectively, preferably has a thickness radially of at least about 1 inch to provide high bearing capacity.
대표청구항
▼
A roller assembly for use as a back-up roller for work rolls. The roller assembly comprises an axle, a roller rotatably mounted on the axle, a plurality of bearing elements rotatably positioned between the axle and roller, and at least one bushing which is eccentric to the axle and which is fixedly
A roller assembly for use as a back-up roller for work rolls. The roller assembly comprises an axle, a roller rotatably mounted on the axle, a plurality of bearing elements rotatably positioned between the axle and roller, and at least one bushing which is eccentric to the axle and which is fixedly mounted on the axle. The eccentric bushing is rotatable for translating the roller in a radial direction thereof. In order to rotate the bushing in one of opposite circumferential directions, preferably, force is applied to a respective one of a pair of terminal ends of a groove which extends circumferentially in a radially outer surface of the eccentric bushing. Each of the axle and roller, which serve as inner and outer races respectively, preferably has a thickness radially of at least about 1 inch to provide high bearing capacity. sure applied in operation (V) is at least about 340 bars. 6. A process according to claim 2, wherein said sufficient pressure applied in operation (V) is at least about 340 bars. 7. A process according to claim 1, wherein the solid coating of wax formed in operation (II) has a thickness of at least about 1.0 μm. 8. A process according to claim 7, wherein said wax has a drop melting range in which the lowest temperature is at least about 50° C. and the highest temperature is not more than about 80° C. 9. A process according to claim 8, wherein said sufficient pressure applied in operation (V) is at least about 340 bars. 10. A process according to claim 1 wherein at least about 50% of said wax is selected from the group consisting of hydrocarbons, halohydrocarbons, halocarbons, alcohols, ethers, carboxylic acids, esters of carboxylic acids, ketones, and aldehydes. 11. A process according to claim 10 wherein said wax is selected from molecules each of which contains at least one moiety that contains at least eight carbon atoms that are joined to one another, with no intervening atoms except optionally for fluorine, chlorine, and ether oxygen atoms, in a straight chain or in a chain with no more than one branch. 12. A process according to claim 11 wherein the mole percent of hydrocarbons is at least about 50% of the total wax used and the mole percent of carboxylic acids is. at least about 0.5% of the total wax used. 13. A process according to claim 12 wherein: for the hydrocarbon molecules: at least about 25 mole % of the molecules have from 26 to 33 carbon atoms each; at least about 25 mole % of the molecules have from 21 to 25 carbon atoms each; at least about 2.0 mole % have each of the numbers of carbon atoms from 21 to 29; and at least about 6.0 mole % of the molecules have each of the numbers of carbon atoms from 22 to 25; and for the carboxylic acid molecules: at least about 5 mole % of the molecules have either 19 or 20 carbon atoms each; at least about 10 mole % of the molecules have from 14 to 18 carbon atoms each; at least about 10 mole % of the molecules have from 8 to 13 carbon atoms each; at least about 10 mole % of the molecules have 21 or more carbon atoms each; and at least about 0.5 mole % of the molecules have each of the numbers of carbon atoms from 11 to 24. 14. A process for hydroforming a tube of a ductile solid material, said tube having an outer surface, an interior, and an interior surface, said process comprising operations of: (I) providing an openable die having an interior surface of a shape to which it is desired to have the hydroformed part of the outer surface of the tube of ductile solid material conform after said tube has been hydroformed; (II) forming, over at least such portion of the outer surface of the tube of ductile solid material as is intended to contact the interior surface of the openable die during hydroforming, a coating of a solid wax, so as to form a coated tube of ductile solid material; (III) emplacing the coated tube of ductile solid material within at least a part of said openable die and closing the die, so that a portion of the outer surface of the coated tube of ductile solid material that is desired to be hydroformed is within the closed openable die; (IV) providing within the interior of the coated tube of ductile solid material a hydraulic fluid that exerts equal pressure on all parts of the internal surface of the coated tube of ductile solid material with which the hydraulic fluid is in physical contact; and (V) applying the hydraulic fluid provided in operation (IV) as described immediately above, while the coated tube of ductile solid material remains emplaced within the closed openable die as recited in operation (III) above, a sufficient pressure to cause at least a portion of the outer surface of the coated tube of ductile solid material to conform to the inner surface of the closed openable die; wherein said wax has a drop melting r ange in which the lowest temperature is at least about 40° C. and the highest temperature is not more than about 95° C. 15. A process for hydroforming a tube of a ductile solid material, said tube having an outer surface, an interior, and an interior surface, said process comprising operations of: (I) providing an openable die having an interior surface of a shape to which it is desired to have the hydroformed part of the outer surface of the tube of ductile solid material conform after said tube has been hydroformed; (II) forming, over at least such portion of the outer surface of the tube of ductile solid material as is intended to contact the interior surface of the openable die during hydroforming, a coating of a solid wax, so as to form a coated tube of ductile solid material; (III) emplacing the coated tube of ductile solid material within at least a part of said openable die and closing the die, so that a portion of the outer surface of the coated tube of ductile solid material that is desired to be hydroformed is within the closed openable die; (IV) providing within the interior of the coated tube of ductile solid material a hydraulic fluid that exerts equal pressure on all parts of the internal surface of the coated tube of ductile solid material with which the hydraulic fluid is in physical contact; and (V) applying the hydraulic fluid provided in operation (IV) as described immediately above, while the coated tube of ductile solid material remains emplaced within the closed openable die as recited in operation (III) above, a sufficient pressure to cause at least a portion of the outer surface of the coated tube of ductile solid material to conform to the inner surface of the closed openable die; wherein said wax comprises at least about 50 mole percent of hydrocarbons based on the total wax used and at least about 0.5 mole percent of carboxylic acids based on the total wax used. 16. A process according to claim 15 wherein at least about 50% of said wax is selected from the group consisting of hydrocarbons, halohydrocarbons, halocarbons, alcohols, ethers, carboxylic acids, esters of carboxylic acids, ketones, and aldehydes. 17. A process according to claim 16 wherein said wax is selected from molecules each of which contains at least one moiety that contains at least eight carbon atoms that are joined to one another, with no intervening atoms except optionally for fluorine, chlorine, and ether oxygen atoms, in a straight chain or in a chain with no more than one branch. 18. A process according to claim 17 wherein: for the hydrocarbon molecules: at least about 25 mole % of the molecules have from 26 to 33 carbon atoms each; at least about 25 mole % of the molecules have from 21 to 25 carbon atoms each; at least about 2.0 mole % have each of the numbers of carbon atoms from 21 to 29; and at least about 6.0 mole % of the molecules have each of the numbers of carbon atoms from 22 to 25; and for the carboxylic acid molecules: at least about 5 mole % of the molecules have either 19 or 20 carbon atoms each; at least about 10 mole % of the molecules have from 14 to 18 carbon atoms each; at least about 10 mole % of the molecules have from 8 to 13 carbon atoms each; at least about 10 mole % of the molecules have 21 or more carbon atoms each; and at least about 0.5 mole % of the molecules have each of the numbers of carbon atoms from 11 to 24.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.