IP Library › Granted Patent US 12,186,858
Granted Patent B2
US 12,186,858 · App. 18/082,549 · Granted Jan 7, 2025

Articulating apparatus of a waterjet system and related technology

Inventors: Peter J. Miles (Kent, WA); Axel H. Henning (Black Diamond, WA)
Assignee: OMAX Corporation
B24C1/045B24B27/0038B24B41/02B24C3/06B24C5/02B25J5/04B25J9/02B25J9/04B25J9/06B25J9/106
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Quick Facts
Patent No.
US 12,186,858
App. No.
18/082,549
Granted
Jan 7, 2025
Kind
B2
Abstract

A waterjet system in accordance with at least some embodiments includes a carriage, a motion assembly configured to move the carriage horizontally relative to a workpiece, and a cutting head carried by the carriage. The waterjet system can also include a kinematic chain through which the cutting head is operably connected to the carriage. The kinematic chain can include first, second, and third joints rotatably adjustable about different first, second, and third axes, respectively. The carriage and the first and second joints can be configured to move the cutting head along a path relative to the workpiece while the cutting head directs a jet toward the workpiece to form a product. The third joint can be configured to shift a kinematic singularity away from the path to reduce or eliminate delay and corresponding reduced cutting accuracy associated with approaching the kinematic singularity.

Claims (26)

1. A method for operating a waterjet system, the method comprising:

directing a jet toward a workpiece via a cutting head of the waterjet system;

moving a carriage of the waterjet system horizontally relative to the workpiece while directing the jet toward the workpiece, wherein the cutting head is operably connected to the carriage through a kinematic chain of the waterjet system;

operating a first joint of the kinematic chain to rotate the cutting head about a first axis relative to the workpiece while directing the jet toward the workpiece;

operating a second joint of the kinematic chain to rotate the cutting head and the first joint about a second axis relative to the workpiece while directing the jet toward the workpiece;

operating a third joint of the kinematic chain to rotate the cutting head, the first joint, and the second joint about a third axis relative to the workpiece, wherein the first second, and third axes are not parallel to each other; and

operating a fourth joint of the kinematic chain to move the cutting head, the first joint, the second joint, and the third joint vertically relative to the workpiece.

2. The method of claim 1 wherein operating the third joint includes operating the third joint before directing the jet toward the workpiece.

3. The method of claim 1 wherein operating the third joint includes operating the third joint while directing the jet toward the workpiece.

4. The method of claim 1 wherein operating the third joint includes moving the third joint from a first state in which the second axis is vertical to a second state in which the second axis is not vertical.

5. The method of claim 1 wherein operating the third joint includes operating the third joint stepwise.

6. The method of claim 1 wherein:

operating the first and second joints includes automatically operating the first and second joints; and

operating the third joint includes manually operating the third joint.

7. The method of claim 1 wherein operating the first, second, and third joints includes automatically operating the first, second, and third joints.

8. The method of claim 1 wherein:

moving the carriage, the first joint, and the second joint includes moving the carriage, the first joint, and the second joint to move the cutting head along a path configured to form a product from the workpiece; and

the jet has different angles off vertical at different respective portions of the path.

9. The method of claim 8 wherein:

operating the third joint includes moving the third joint to a state selected to shift a kinematic singularity away from the path; and

moving the carriage, the first joint, and the second joint includes moving the carriage, the first joint, and the second joint to move the cutting head along a full extent of the path while the third joint is in the selected state.

10. The method of claim 8 wherein operating the third joint includes operating the third joint to shift a kinematic singularity away from the path.

11. The method of claim 8 wherein operating the first and second joints includes operating the first and second joints to adjust an angle by which the jet is tilted relative to an adjacent wall of the product thereby reducing or eliminating taper in the wall of the product, the taper being associated with a non-cylindrical shape of the jet.

12. The method of claim 11 wherein:

moving the carriage horizontally relative to the workpiece includes moving the carriage horizontally relative to the workpiece at varying speed; and

adjusting the angle by which the jet is tilted relative to the adjacent wall of the product includes adjusting the angle by which the jet is tilted relative to the adjacent wall of the product to at least partially compensate for an effect of the varying speed on the taper.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 23, 2025
From: OMAX CORPORATION
To: HYPERTHERM, INC.
Reel/Frame 071018/0319 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 13, 2023
From: MILES, PETER J.; HENNING, AXEL H.
To: OMAX CORPORATION
Reel/Frame 063314/0752 →
Continuity (3)
Division 16275122 · Feb 13, 2019
Provisional Application 62630135 · Feb 13, 2018
Related Publication 20230120907A1 · Apr 20, 2023
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