TRAVELLING PLANETARY CUTTER

• US 20190134836A1
• Filed: 06/12/2018
• Published: 05/09/2019
• Est. Priority Date: 06/12/2017
• Status: Active Grant

• Current Assignee: IPEG, INC. (Sewickley Capital, Inc.)
• Original Assignee: IPEG, INC. (Sewickley Capital, Inc.)
• Inventors: Yore, JR., Robert G., Czarnik, David H., Gingery, Derik, Bessemer, Robert Henry, Hilz, Shawan
• Granted Patent: US 10,442,100 B2
• Time in Patent Office: Days
• CPC Class Codes: B26D 1/56 involving a cutting member which travels with the work otherwise than in the direction of the cut, i.e. flying cutter flying shears for metal B23D25/00; flying saws for metal B23D45/18
• CPC Class Codes: B26D 1/60 and is mounted on a movable carriage
• CPC Class Codes: B26D 2007/0043 the cutting machine comprising a linear motor
• CPC Class Codes: B26D 3/16 Cutting rods or tubes transversely cutting tubes longitudinally B26D3/001
• CPC Class Codes: B26D 5/005 Computer numerical control means
• CPC Class Codes: B26D 5/16 Cam means

Abstract

A travelling planetary cutter (10), comprising: a cutting head assembly (11) comprising a rotating cutting assembly (30) comprising a blade guide block (32) carrying a cutting blade (34), wherein the blade guide block (32) is disposed for axial movement on a cutting block (33) so that cutting blade (34) may be moved towards and away from bearings (36) disposed on the cutting block (33); a blade cam block (42) also comprising part of the rotating cutting assembly (30) and itself comprising a blade cam (44) defining a cam surface (45), wherein axial movement of blade cam (44) of blade cam block (42) in direction (43) forces cam surface (45) to act upon a bearing (46) on blade guide block (32) to cause blade guide block (32) to move towards a workpiece to be cut (14) until cutting blade (34) engages workpiece (14) against bearings (36) while cutting blade (34) is rotated as part of rotating cutting assembly (30) to cut workpiece (14) wherein a speed of rotation of cutting blade (34) is maintained constant even while a diameter of workpiece (14) being cut decreases.

Claims

1. A travelling planetary cutter (10), comprising:

a cutting head assembly (11) comprising a rotating cutting assembly (30) comprising a blade guide block (32) carrying a cutting blade (34), wherein the blade guide block (32) is disposed for axial movement on a cutting block (33) so that cutting blade (34) may be moved towards and away from bearings (36) disposed on the cutting block (33);

a blade cam block (42) also comprising part of the rotating cutting assembly (30) and itself comprising a blade cam (44) defining a cam surface (45), wherein axial movement of blade cam (44) of blade cam block (42) in direction (43) forces cam surface (45) to act upon a bearing (46) on blade guide block (32) to cause blade guide block (32) to move towards a workpiece to be cut (14) until cutting blade (34) engages workpiece (14) against bearings (36) while cutting blade (34) is rotated as part of rotating cutting assembly (30) to cut workpiece (14) wherein a speed of rotation of cutting blade (34) is maintained constant even while a diameter of workpiece (14) being cut decreases.

2. The travelling planetary cutter (10) of claim 1 wherein the speed of rotation of cutting blade (34) is maintained constant at a speed of 500 rpms or above.

3. The travelling planetary cutter (10) of claim 1 wherein the workpiece (14) comprises tubing.

4. The travelling planetary cutter (10) of claim 1 wherein the axial movement of blade cam (44) of blade cam block (42) in direction (43) is caused by a linear actuator (52), powered by a linear servo motor, operating upon a linear movement arm (50) that acts upon the blade cam block (42).

5. The travelling planetary cutter (10) of claim 1 wherein cutting blade (34) is circular.

6. The travelling planetary cutter (10) of claim 1 wherein a constant rotational speed of cutting blade (34) is maintained by adjusting the rotational speed of rotating cutting assembly (30) as the outer diameter of workpiece (14) around the circumferential cut decreases as cutting blade (34) cuts deeper into workpiece (14).

7. The travelling planetary cutter (10) of claim 2 wherein the axial movement of blade cam (44) of blade cam block (42) in direction (43) is caused by a linear actuator (52), powered by a linear servo motor, operating upon a linear movement arm (50) that acts upon the blade cam block (42).

8. The travelling planetary cutter (10) of claim 3 wherein the axial movement of blade cam (44) of blade cam block (42) in direction (43) is caused by a linear actuator (52), powered by a linear servo motor, operating upon a linear movement arm (50) that acts upon the blade cam block (42).

9. The travelling planetary cutter (10) of claim 5 wherein the axial movement of blade cam (44) of blade cam block (42) in direction (43) is caused by a linear actuator (52), powered by a linear servo motor, operating upon a linear movement arm (50) that acts upon the blade cam block (42).

10. The travelling planetary cutter (10) of claim 6 wherein the axial movement of blade cam (44) of blade cam block (42) in direction (43) is caused by a linear actuator (52), powered by a linear servo motor, operating upon a linear movement arm (50) that acts upon the blade cam block (42).

11. The travelling planetary cutter (10) of claim 2 wherein cutting blade (34) is circular.

12. The travelling planetary cutter (10) of claim 3 wherein cutting blade (34) is circular.

13. The travelling planetary cutter (10) of claim 4 wherein cutting blade (34) is circular.

14. The travelling planetary cutter (10) of claim 6 wherein cutting blade (34) is circular.