Tubular cutting tool
View Patent ↗A method of cutting a tubular includes providing a rotatable cutting tool in the tubular, the cutting tool having a blade with a cutting structure thereon; extending the blade relative to the cutting tool; rotating the cutting tool relative to the tubular; guiding the cutting structure into contact with the tubular; cutting the tubular using the blade; and limiting extension of the blade. A rotatable blade for cutting a tubular includes a blade body extendable from a retracted position; a cutting structure disposed on a leading edge of the blade body, the cutting structure configured to cut the tubular; a stop on a first surface of the blade body; and an initial engagement point on a second surface of the blade body, the initial engagement point configured to guide the cutting structure into contact with the tubular.
1. A rotatable blade for cutting a tubular, comprising;
a blade body extendable between a retracted position and an extended position, the blade body haying a protrusion;
a cutting structure disposed on a leading edge of the protrusion the cutting structure configured to cut the tubular;
a stop, wherein the stop is configured to engage the tubular; and
an initial engagement point disposed on the protrusion, the initial engagement point configured to guide the cutting structure into contact with the tubular.
2. The blade of claim 1 , wherein the initial engagement point is disposed on an outward-facing surface of the protrusion.
3. The blade of claim 1 , wherein the stop comprises a low-friction material.
4. The blade of claim 1 , wherein the initial engagement point comprises a wearable member.
5. The blade of claim 4 , wherein the wearable member is configured to partially wear away prior to the cutting structure contacting the tubular.
6. The blade of claim 1 , wherein the stop is configured to limit at least one of:
an extension of the blade body, and
a depth of cut of the cutting structure.
7. The blade of claim 1 , wherein the blade is rotatable about a pivot point.
8. The blade of claim 1 , further comprising a pivot pin, wherein the blade is rotatable about the pivot pin.
9. The blade of claim 1 , wherein the stop is disposed at an angle relative to a top surface of the cutting structure.
10. The blade of claim 1 , wherein a length of the cutting structure at least as long as a thickness of the tubular.
11. The blade of claim 1 , wherein the protrusion is disposed on an attachment.
12. The blade of claim 11 , wherein the attachment is at least one of:
integrally formed with the blade body,
operably coupled to the blade body, and
replaceable.
13. A rotatable blade for cutting a tubular, comprising;
a blade body pivotable from a retracted position;
a cutting structure disposed on a leading edge of the blade body, the cutting structure configured to cut the tubular;
a stop on a first surface of the blade body, wherein the stop is configured to engage the tubular; and
an initial engagement point on a second surface of the blade body, the initial engagement point configured to guide the cutting structure into contact with the tubular;
a pivot pin disposed in an aperture of the blade body, wherein the blade is pivotable about the pivot pin.
14. The blade of claim 13 , wherein at least one of the first surface and the second surface is an outward-facing surface.
15. The blade of claim 13 , wherein the stop comprises a low-friction material.
16. The blade of claim 13 , wherein the initial engagement point comprises a wearable member.
17. The blade of claim 13 , wherein the stop is configured to limit at least one of:
an extension of the blade body, and
a depth of cut of the cutting structure.
18. The blade of claim 13 , wherein the stop is disposed at an angle relative to a top surface of the cutting structure.
19. The blade of claim 13 , wherein a length of the cutting structure at least as long as a thickness of the tubular.
20. The blade of claim 13 , wherein the cutting structure, the stop, and the initial engagement point are disposed on an attachment.
21. The blade of claim 20 , wherein the attachment is at least one of:
integrally formed with the blade body,
operably coupled to the blade body, and
replaceable.
22. A rotatable blade for cutting a tubular, comprising;
a blade body extendable from a retracted position;
a cutting structure disposed on a leading edge of the blade body, the cutting structure configured to cut the tubular;
a stop on a first surface of the blade body, wherein the stop is configured to engage the tubular;
an initial engagement point on a second surface of the blade body, the initial engagement point configured to guide the cutting structure into contact with the tubular; and
wherein the first surface of the blade body is the same as the second surface of the blade body.
23. The blade of claim 22 , wherein the stop comprises a low-friction material.
24. The blade of claim 22 , wherein the initial engagement point comprises a wearable member.
25. The blade of claim 22 , wherein the stop is configured to limit at least one of:
an extension of the blade body, and
a depth of cut of the cutting structure.
26. The blade of claim 22 , wherein the blade is rotatable about a pivot point.
27. The blade of claim 22 , further comprising a pivot pin, wherein the blade is rotatable about the pivot pin.
28. The blade of claim 22 , wherein the stop is disposed at an angle relative to a top surface of the cutting structure.
29. The blade of claim 22 , wherein a length of the cutting structure at least as long as a thickness of the tubular.
30. The blade of claim 22 , wherein the cutting structure, the stop, and the initial engagement point are disposed on an attachment.
31. The blade of claim 30 , wherein the attachment is at least one of:
integrally formed with the blade body,
operably coupled to the blade body, and
replaceable.