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1. WO2015023391 - PROCÉDÉ ET DISPOSITIF DE FORMATION DE RAINURES DANS DES ÉLÉMENTS DE CONDUITE

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

What is claimed is:

1. A method of processing a pipe element having a longitudinal axis using a drive roller and an idler roller, said method comprising determining a diameter of said pipe element by:

engaging said pipe element with said drive roller;

engaging said idler roller with said pipe element;

rotating said pipe element about said longitudinal axis while said pipe element is engaged with said idler roller, said idler roller rotating in response to the pipe element;

knowing a diameter or a circumference of a surface of said idler roller engaged with said pipe element;

determining a number of revolutions of said idler roller, including fractions thereof, for each revolution of said pipe element; and

using said number of revolutions of said idler roller, including said fractions thereof, per revolution of said pipe element to calculate said diameter of said pipe element.

2. The method according to claim 1, wherein determining said number of revolutions of said idler roller, including said fractions thereof, comprises counting said number of revolutions of said idler roller, including said fractions thereof, for at least one said revolution of said pipe element.

3. The method according to claim 1, further comprising:

comparing said diameter of said pipe element with a tolerance range for said diameter of said pipe element;

rejecting said pipe element if said diameter of said pipe element is not within said tolerance range for said diameter of said pipe element.

4. The method according to claim 1, further comprising determining at least one revolution of said pipe element by sensing a feature on said pipe element a first and a second time while rotating said pipe element.

5. The method according to claim 1, further comprising determining at least one revolution of said pipe element by:

marking an outer surface of said pipe element with a light reflecting surface that contrasts with said outer surface of said pipe element;

shining a light onto said outer surface of said pipe element;

sensing a first and a second reflection of said light from said light reflecting surface while rotating said pipe element.

6. The method according to claim 1, further comprising determining said at least one revolution of said pipe element by:

positioning a magnet on a surface of said pipe element;

sensing a first and a second magnetic field while rotating said pipe element.

7. The method according to claim 1, further comprising using said idler roller as a grooving roller to form a circumferential groove in said pipe element about said longitudinal axis by:

forcing said grooving roller against said pipe element so as to displace material of the pipe element while rotating said pipe element;

measuring a circumference of said groove while rotating said pipe element;

determining a diameter of said groove using said circumference of said groove;

comparing said diameter of said groove with a tolerance range for said diameter of said groove;

repeating said forcing, measuring, determining and said comparing until said diameter of said groove is within said tolerance range.

8. The method according to claim 7, wherein measuring said circumference of said groove while rotating said pipe element comprises:

knowing a diameter or a circumference of a surface of said grooving roller engaged with said groove;

determining a number of revolutions of said grooving roller, and fractions thereof, for each revolution of said pipe element, and

calculating said circumference of said groove using said diameter or circumference of said surface and said number of revolutions of said grooving roller, and fractions thereof, for each revolution of said pipe element.

9. The method according to claim 8, wherein determining said number of revolutions of said grooving roller, and said fractions thereof, comprises counting said number of revolutions of said grooving roller, and said fractions thereof, for at least one said revolution of said pipe element.

10. The method according to claim 8, further comprising determining at least one revolution of said pipe element by sensing a feature on said pipe element a first and a second time while said pipe element is rotating.

11. The method according to claim 8, further comprising determining said at least one revolution of said pipe element by:

marking an outer surface of said pipe element with a light reflecting surface that contrasts with said outer surface of said pipe element;

shining a light onto said outer surface of said pipe element;

sensing a first and a second reflection of said light from said light reflecting surface while rotating said pipe element.

12. The method according to claim 8, further comprising determining said at least one revolution of said pipe element by:

positioning a magnet on a surface of said pipe element;

sensing a first and a second magnetic field while rotating said pipe element.

13. The method according to claim 1, further comprising using a grooving roller to form a circumferential groove in said pipe element about said longitudinal axis by:

forcing said grooving roller against said pipe element so as to displace material of the pipe element while rotating said pipe element;

measuring a circumference of said groove while rotating said pipe element;

determining a diameter of said groove using said circumference of said groove;

comparing said diameter of said groove with a tolerance range for said diameter of said groove;

repeating said forcing, measuring, determining and said comparing until said diameter of said groove is within said tolerance range.

14. The method according to claim 13, wherein measuring said circumference of said groove while rotating said pipe element comprises:

engaging said idler roller with said pipe element within said groove;

knowing a diameter or a circumference of a surface of said idler roller engaged with said pipe element within said groove;

determining a number of revolutions of said idler roller, and fractions thereof, for each revolution of said pipe element, and

calculating said circumference of said groove using said diameter or circumference of said surface and said number of revolutions of said idler roller, and fractions thereof, for each revolution of said pipe element.

15. The method according to claim 14, wherein determining said number of revolutions of said idler roller, and said fractions thereof, comprises counting said number of revolutions of said idler roller, and said fractions thereof, for at least one said revolution of said pipe element.

16. The method according to claim 14, further comprising determining said at least one revolution of said pipe element by:

marking an outer surface of said pipe element with a light reflecting surface that contrasts with said outer surface of said pipe element;

shining a light onto said outer surface of said pipe element;

sensing a first and a second reflection of said light from said light reflecting surface while rotating said pipe element.

17. The method according to claim 14, further comprising determining said at least one revolution of said pipe element by:

positioning a magnet on a surface of said pipe element;

sensing a first and a second magnetic field while rotating said pipe element.

18. A method of forming a circumferential groove in a pipe element having a longitudinal axis and using a drive roller and a grooving roller, said method comprising:

engaging said pipe element with said drive roller;

engaging said grooving roller with said pipe element;

forming said groove by rotating said pipe element about said longitudinal axis while forcing said grooving roller against said pipe element so as to displace material of said pipe element;

measuring a circumference of said groove while rotating said pipe element;

determining a diameter of said groove using said circumference of said groove;

comparing said diameter of said groove with a desired tolerance range;

repeating said forming, measuring, determining, and comparing until said groove diameter is within said desired tolerance range.

19. The method according to claim 18, further comprising:

determining a diameter of said pipe element;

comparing said diameter of said pipe element with a tolerance range for said diameter of said pipe element;

rejecting said pipe element before forming said groove in said pipe element if said diameter of said pipe element is not within said tolerance range for said diameter of said pipe element.

20. The method according to claim 19, wherein determining said diameter of said pipe element comprises:

rotating said pipe element while said pipe element is engaged with said grooving roller, said grooving roller rotating in response to the pipe element;

knowing a diameter of a surface of said grooving roller engaged with said pipe element;

determining a number of revolutions of said grooving roller, including fractions thereof, for each revolution of said pipe element; and

calculating said diameter of said pipe element, said number of revolutions of said grooving roller, including said fractions thereof, per revolution of said pipe element being proportional to said diameter of said pipe element.

21. The method according to claim 20, wherein determining said number of revolutions of said grooving roller, including said fractions thereof, comprises counting said number of revolutions of said grooving roller, including said fractions thereof, for at least one said revolution of said pipe element.

22. The method according to claim 21, further comprising determining said at least one revolution of said pipe element by sensing a feature on said pipe element a first and a second time while rotating said pipe element.

23. The method according to claim 21, further comprising determining said at least one revolution of said pipe element by:

marking an outer surface of said pipe element with a light reflecting surface that contrasts with said outer surface of said pipe element;

shining a light onto said outer surface of said pipe element;

sensing a first and a second reflection of said light from said light reflecting surface while rotating said pipe element.

24. The method according to claim 21, further comprising determining at least one revolution of said pipe element by:

positioning a magnet on a surface of said pipe element;

sensing a first and a second magnetic field while rotating said pipe element.

25. The method according to claim 18, wherein said engaging said grooving roller with said pipe element comprises pinching said pipe element between said grooving roller and said drive roller with sufficient force to hold said pipe element therebetween.

26. The method according to claim 18, further comprising engaging an inner surface of said pipe element with said drive roller and engaging an outer surface of said pipe element with said grooving roller.

27. The method according to claim 18, further comprising selecting a rotational speed for rotating said pipe element based upon at least one characteristic of said pipe element.

28. The method according to claim 27, wherein said at least one characteristic of said pipe element is selected from the group consisting of a diameter, a wall thickness, a material of said pipe element and combinations thereof.

29. The method according to claim 18, further comprising selecting a force for forcing said grooving roller against said pipe element based upon at least one characteristic of said pipe element.

30. The method according to claim 29, wherein said at least one characteristic of said pipe element is selected from the group consisting of a diameter, a wall thickness, a material of said pipe element and combinations thereof.

31. The method according to claim 18, further comprising selecting a feed rate of said grooving roller for forming said groove in said pipe element based upon at least one

characteristic of said pipe element.

32. The method according to claim 31, wherein said at least one characteristic of said pipe element is selected from the group consisting of a diameter, a wall thickness, a material of said pipe element and combinations thereof.

33. The method according to claim 18, wherein determining said diameter of said groove comprises:

knowing a diameter of a surface of said grooving roller engaged with said groove within said pipe element;

determining a number of revolutions of said grooving roller, including fractions thereof, for each revolution of said pipe element;

calculating said diameter of said groove, said number of revolutions of said grooving roller, including said fractions thereof, per revolution of said pipe element being proportional to said diameter of said groove.

34. The method according to claim 33, wherein determining said number of revolutions of said grooving roller, including said fractions thereof, comprises counting said number of revolutions of said grooving roller, including said fractions thereof, for at least one said revolution of said pipe element.

35. The method according to claim 34, further comprising determining said at least one revolution of said pipe element by sensing a feature on said pipe element a first and a second time while rotating said pipe element.

36. The method according to claim 34, further comprising determining said at least one revolution of said pipe element by:

marking an outer surface of said pipe element with a light reflecting surface that contrasts with said outer surface of said pipe element;

shining a light onto said outer surface of said pipe element;

sensing a first and a second reflection of said light from said light reflecting surface while rotating said pipe element.

37. The method according to claim 34, further comprising determining said at least one revolution of said pipe element by:

positioning a magnet on a surface of said pipe element;

sensing a first and a second magnetic field while rotating said pipe element.

38. The method according to claim 18, further comprising measuring a plurality of dimensions proximate to said circumferential groove in said pipe element while rotating said pipe element.

39. The method according to claim 38, wherein said measuring said plurality of dimensions comprises measuring at least one dimension selected from the group consisting of a distance from an end of said groove to an end of said pipe, a width of said groove, a depth of said groove, a flare height of said pipe, and combinations thereof.

40. A method of forming a circumferential groove in a pipe element having a longitudinal axis and using a drive roller and a grooving roller, said method comprising:

engaging said pipe element with said drive roller;

engaging said grooving roller with said pipe element;

forming said groove by rotating said pipe element about said longitudinal axis while forcing said grooving roller against said pipe element so as to displace material of said pipe element;

measuring a plurality of circumferences of said groove while rotating said pipe element;

determining a plurality of diameters of said groove using said plurality of circumferences of said groove

calculating a change in diameter of said groove per revolution of said pipe element;

calculating a number of revolutions of said pipe element needed to form a groove of a desired diameter using said change in diameter per revolution of said groove;

counting the number of revolutions of said pipe element; and

stopping forcing said grooving roller against said pipe element upon reaching said number of revolutions needed to form said groove of said desired diameter.

41. The method according to claim 40, further comprising:

measuring said diameter of said groove;

comparing said diameter of said groove to said desired diameter;

repeating said forming, measuring, determining, calculating, counting and stopping steps.

42. A method of forming a circumferential groove in a pipe element having a longitudinal axis and using a drive roller and a grooving roller, said method comprising:

engaging said pipe element with said drive roller;

engaging said grooving roller with said pipe element;

forming said groove by rotating said pipe element about said longitudinal axis while forcing said grooving roller against said pipe element so as to displace material of said pipe element;

measuring a plurality of circumferences of said groove while rotating said pipe element;

calculating a change in circumference of said groove per revolution of said pipe element;

calculating a number of revolutions of said pipe element needed to form a groove of a desired circumference using said change in circumference per revolution of said pipe element;

counting the number of revolutions of said pipe element; and

stopping forcing said grooving roller against said pipe element upon reaching said number of revolutions needed to form said groove of said desired circumference.

43. The method according to claim 42, further comprising:

measuring said circumference of said groove;

comparing said circumference of said groove to said desired circumference;

repeating said forming, measuring, calculating, counting and stopping steps.

44. A method of forming a circumferential groove in a pipe element having a longitudinal axis and using a drive roller and a grooving roller, said method comprising:

engaging said pipe element with said drive roller;

engaging said grooving roller with said pipe element;

forming said groove by rotating said pipe element about said longitudinal axis while forcing said grooving roller a discrete distance into said pipe element so as to displace material of said pipe element for a revolution of said pipe element;

measuring a circumference of said groove while rotating said pipe element;

determining a diameter of said groove using said circumference of said groove;

comparing said diameter of said groove with a tolerance range for said diameter of said groove; and

until said groove diameter is within said tolerance range:

repeating said forming, measuring, determining, and comparing steps.

45. The method according to claim 44, further comprising decreasing said discrete distance for each said revolution as said diameter approaches said tolerance range.

46. A method of forming a circumferential groove in a pipe element having a longitudinal axis and using a drive roller and a grooving roller, said method comprising:

engaging said pipe element with said drive roller;

engaging said grooving roller with said pipe element;

forming said groove by rotating said pipe element about said longitudinal axis while forcing said grooving roller a discrete distance into said pipe element so as to displace material of said pipe element for a revolution of said pipe element;

measuring a circumference of said groove while rotating said pipe element;

comparing said circumference of said groove with a tolerance range for said circumference of said groove; and

until said circumference of said groove is within said tolerance range:

repeating said forming, measuring and comparing steps.

47. The method according to claim 46, further comprising decreasing said discrete distance for each said revolution as said diameter approaches said tolerance range.

48. A method of forming a circumferential groove in a pipe element having a longitudinal axis and using a drive roller and a grooving roller, said method comprising:

engaging said pipe element with said drive roller;

engaging said grooving roller with said pipe element;

forming said groove by rotating said pipe element about said longitudinal axis while forcing said grooving roller a discrete distance into said pipe element so as to displace material of said pipe element for a revolution of said pipe element;

calculating a number of revolutions of said pipe element needed to form a groove of a desired diameter using said discrete distance per revolution of said groove;

counting the number of revolutions of said pipe element; and

stopping forcing said grooving roller into said pipe element said discrete distance upon reaching said number of revolutions needed to form said groove of said desired diameter.

49. The method according to claim 48, further comprising:

measuring said diameter of said groove;

comparing said diameter of said groove to said desired diameter;

repeating said forming, calculating, counting and stopping steps.

50. A method of forming a circumferential groove in a pipe element having a longitudinal axis and using a drive roller and a grooving roller, said method comprising:

engaging said pipe element with said drive roller;

engaging said grooving roller with said pipe element;

measuring a diameter of said pipe element while rotating said pipe element about said longitudinal axis;

calculating a desired groove depth tolerance corresponding to a desired groove diameter tolerance;

forming said groove by rotating said pipe element about said longitudinal axis while forcing said grooving roller against said pipe element so as to displace material of said pipe element;

while rotating said pipe element, measuring said groove depth;

comparing said groove depth with said desired groove depth tolerance; and

repeating forming said groove, measuring said groove depth, and comparing said groove depth with said desired groove depth tolerance until said groove depth is within said desired groove depth tolerance.

51. A method of forming a circumferential groove in a pipe element having a longitudinal axis and using a drive roller and a grooving roller, said method comprising: engaging said pipe element with said drive roller;

engaging said grooving roller with said pipe element;

determining a diameter of said pipe element while rotating said pipe element about said longitudinal axis;

determining a desired groove diameter tolerance based upon said diameter of said pipe element;

forming said groove by rotating said pipe element about said longitudinal axis while forcing said grooving roller against said pipe element so as to displace material of said pipe element;

determining said groove diameter while rotating said pipe element;

comparing said groove diameter with said desire groove diameter tolerance;

repeating said forming said groove and determining said groove diameter until said groove diameter is within said desired groove diameter tolerance.

52. A method of forming a circumferential groove in a pipe element having a longitudinal axis and using a drive roller and a grooving roller, said method comprising:

engaging said pipe element with said drive roller;

engaging said grooving roller with said pipe element;

measuring a circumference of said pipe element while rotating said pipe element about said longitudinal axis;

determining a desired groove circumference tolerance based upon said diameter of said pipe element;

forming said groove by rotating said pipe element about said longitudinal axis while forcing said grooving roller against said pipe element so as to displace material of said pipe element;

measuring said groove circumference while rotating said pipe element;

comparing said groove circumference with said desired groove circumference tolerance;

repeating said forming, measuring, and said comparing until said groove circumference is within said desired groove circumference tolerance.

53. A device for forming a circumferential groove in a pipe element having a

longitudinal axis, said device comprising:

a drive roller rotatable about a drive roller axis, said drive roller being engageable with an inner surface of said pipe element when said drive roller axis is oriented substantially parallel to said longitudinal axis of said pipe element;

a grooving roller rotatable about a grooving roller axis oriented substantially parallel to said drive roller axis, said grooving roller having a known diameter, said grooving roller being movable toward and away from said drive roller so as to forcibly engage an outer surface of said pipe element so as to displace material of said pipe element and form said groove therein upon rotation of said pipe element;

a first sensor for determining a degree of rotation of said grooving roller and generating a first signal indicative thereof;

a second sensor for determining a degree of rotation of said pipe element and generating a second signal indicative thereof;

a control system adapted to receive said first and second signals, use said first and second signals to determine a diameter of said groove, and control motion of said grooving roller toward and away from said drive roller in response to said diameter of said groove.

54. The device according to claim 53, wherein said first sensor comprises a rotational encoder operatively associated with said grooving roller.

55. The device according to claim 53, wherein said second sensor comprises:

a light reflecting surface affixed to an outer surface of said pipe element, said light reflecting surface contrasting with said outer surface of said pipe element;

a light projector positioned to project light onto said outer surface of said pipe element and said light reflecting surface affixed thereto;

a detector adapted to detect light projected by said light projector upon reflection from said light reflecting surface, said detector generating said signal indicative thereof.

56. The device according to claim 55, wherein said light projector comprises a laser.

57. The device according to claim 55, wherein said light reflecting surface is selected from the group consisting of a specular reflecting surface, a diffuse reflecting surface, a contrasting color reflecting surface and combinations thereof.

58. The device according to claim 53, wherein said second sensor comprises:

a magnet affixed to a surface of said pipe element;

a detector adapted to detect a magnetic field, said detector generating said signal indicative thereof.

59. The device according to claim 53, further comprising a third sensor for measuring a surface profile of at least a portion of said pipe element and generating a signal indicative thereof.

60. The device according to claim 59, wherein said third sensor comprises:

a laser adapted to project a fan- shaped beam along at least said portion of said pipe element;

a detector adapted to receive a reflection of said fan-shaped beam from said portion of said pipe element;

a calculator unit for converting said reflection into measurements representing said surface profile using triangulation, generating said signal indicative of said measurements and transmitting said signal to said control system.

61. The device according to claim 53, wherein said grooving roller is mounted on an actuator controlled by said control system.

62. A device for forming a circumferential groove in a pipe element having a longitudinal axis, said device comprising:

a drive roller rotatable about a drive roller axis, said drive roller being engageable with an inner surface of said pipe element when said drive roller axis is oriented substantially parallel to said longitudinal axis of said pipe element;

a grooving roller rotatable about a grooving roller axis oriented substantially parallel to said drive roller axis, said grooving roller being movable toward and away from said drive roller so as to forcibly engage an outer surface of said pipe element so as to displace material of said pipe element and form said groove therein upon rotation of said pipe element;

an idler roller rotatable about an idler roller axis oriented substantially parallel to said drive roller axis, said idler roller having a known diameter, said idler roller being movable toward and away from said drive roller so as to engage an outer surface of said pipe element so as to rotate upon rotation of said pipe element;

a first sensor for determining a degree of rotation of said idler roller and generating a first signal indicative thereof;

a second sensor for determining a degree of rotation of said pipe element and generating a second signal indicative thereof;

a control system adapted to receive said first and second signals, use said first and second signals to determine a diameter of said groove, and control motion of said grooving roller toward and away from said drive roller in response to said diameter of said groove.

63. The device according to claim 62, wherein said first sensor comprises a rotational encoder operatively associated with said idler roller.

64. The device according to claim 62, wherein said second sensor comprises:

a light reflecting surface affixed to an outer surface of said pipe element, said light reflecting surface contrasting with said outer surface of said pipe element;

a light projector positioned to project light onto said outer surface of said pipe element and said light reflecting surface affixed thereto;

a detector adapted to detect light projected by said light projector upon reflection from said light reflecting surface, said detector generating said signal indicative thereof.

65. The device according to claim 64, wherein said light projector comprises a laser.

66. The device according to claim 64, wherein said light reflecting surface is selected from the group consisting of a specular reflecting surface, a diffuse reflecting surface, a contrasting color reflecting surface and combinations thereof.

67. The device according to claim 62, wherein said second sensor comprises:

a magnet affixed to a surface of said pipe element;

a detector adapted to detect a magnetic field, said detector generating said signal indicative thereof.

68. The device according to claim 62, further comprising a third sensor for measuring a surface profile of at least a portion of said pipe element and generating a signal indicative thereof.

69. The device according to claim 67, wherein said third sensor comprises:

a laser adapted to project a fan- shaped beam along at least said portion of said pipe element;

a detector adapted to receive a reflection of said fan-shaped beam from said portion of said pipe element;

a calculator unit for converting said reflection into measurements representing said surface profile using triangulation, generating said signal indicative of said measurements and transmitting said signal to said control system.

70. The device according to claim 62, wherein said grooving roller is mounted on an actuator controlled by said control system.

71. The device according to claim 62, wherein said idler roller is mounted on an actuator controlled by said control system.