Cross-scale structure feature surface machining method based on multi-component collaborative vibration

Patent metadata

Field	Value
Publication number	US-12360508-B2
Application number	US-202217974765-A
Country	US
Kind code	B2
Filing date	Oct 27, 2022
Priority date	Feb 9, 2022
Publication date	Jul 15, 2025
Grant date	Jul 15, 2025

Abstract

The present disclosure relates to the technical field of cutting machining, and discloses a cross-scale structure feature surface machining method based on a multi-component collaborative vibration. A vibration in a z-axis direction is applied to a servo movement mechanism to realize the cutting of a micron-scale structure and the adjustment of the cutting depth; and the vibration in the z-axis direction is applied to a three-axis movement platform to realize the cutting of a millimeter-scale structure and the adjustment of the cutting depth. A required cross-scale structure feature surface can be machined and formed at one time through a collaborative vibration among a vibrating tool, a servo movement mechanism, and/or a three-axis movement platform according to the structure type contained in the required cross-scale structure, which can simplify a process flow and improve the machining efficiency, and has high economic efficiency.

First claim

What is claimed is:

1. A cross-scale structure feature surface machining method based on a multi-component collaborative vibration, wherein a workpiece is machined by using a cutting process system; the cutting process system comprises a base, a three-axis movement platform, a servo movement mechanism, and a vibrating tool; both the three-axis movement platform and the vibrating tool are mounted on the base; the servo movement mechanism is mounted on the three-axis movement platform; the workpiece is mounted at an end-effector of the servo movement mechanism; a cross-scale structure comprises at least two of a nanometer-scale structure, a micron-scale structure, and a millimeter-scale structure; during cutting machining, the three-axis movement platform enables the workpiece to move in an x-axis, and a required cross-scale structure is formed in a surface of the workpiece through a collaborative vibration among the vibrating tool, the servo movement mechanism, and/or the three-axis movement platform according to the structure type contained in the cross-scale structure;
when the cross-scale structure comprises a nanometer-scale structure, an elliptic vibration is applied to the vibrating tool; a vibration plane of the elliptic vibration is located on an xoz plane; the frequency f 1 of the elliptic vibration is less than 2000 Hz;
when the cross-scale structure comprises a micron-scale structure, a vibration is applied to the servo movement mechanism, the vibration direction is in a z-axis direction, and the frequency f 2 of the vibration ranges from 10 Hz to 2000 Hz; and
when the cross-scale structure comprises a millimeter-scale structure, a vibration is applied to the three-axis movement platform, the vibration direction is in a z-axis direction, and the frequency f 3 of the vibration is not greater than 10 Hz.

2. The cross-scale structure feature surface machining method based on a multi-component collaborative vibration according to claim 1 , wherein during cutting machining, after a first section of structure is formed on a surface of the workpiece, the workpiece is returned to an initial position, the vibrating tool is fed for a certain distance w along a y-axis direction, and then a second section of structure is formed on the surface of the workpiece; and a cycle of forming a section of structure is repeated discontinuously until the required cross-scale structure is formed on the surface of the workpiece.

3. The cross-scale structure feature surface machining method based on a multi-component collaborative vibration according to claim 2 , wherein the feeding distance w of the vibrating tool in the y-axis direction satisfies that:

δ
≥

w
2

8
⁢
r

;

wherein δ is the required machining precision, and r is a cutting edge radius of the vibrating tool.

4. The cross-scale structure feature surface machining method based on a multi-component collaborative vibration according to claim 3 , wherein when an elliptic vibration is applied to the vibrating tool, a position parameter equation of the vibrating tool satisfies:

{

x
=

A
⁢

cos
⁢

(

2
⁢
π
⁢

f
1

⁢
t

)

z
=

B
1

⁢

cos
⁢

(

2
⁢
π
⁢

f
1

⁢
t

+

φ
1

)

;

wherein A is the amplitude of the elliptic vibration in the x-axis direction, B 1 is the amplitude of the elliptic vibration in the z-axis direction, and φ 1 is a phase difference of vibration displacement in the x-axis direction and the z-axis direction; during cutting machining, the movement trajectory of the vibrating tool relative to the workpiece satisfies:
x=A cos(2π f 1 t )+ vt;

z=B 1 cos(2π f 1 t+φ 1 );

the movement trajectory parameters (A, B 1 , φ 1 , v) satisfy:

v
=

d
1

*

f
1

;

d
1

(

γ
-
π

2
⁢
π

)

-

A
⁡
(

cos
⁢

(

φ
1

Assignees

• Harbin Inst Technology Shenzhen
• Harbin Inst Technology

Inventors

• Yang Yang
• Wen Jian

Classifications

• B23D5/00

  Planing or slotting machines cutting otherwise than by relative movement of the tool and workpiece in a straight line · CPC title

• B23D79/00 Primary

  Methods, machines, or devices not covered elsewhere, for working metal by removal of material (by combined operations B23D81/00; cutting by electron-beam B23K15/00, by laser beam B23K26/00; by electro-erosion B23H; tool holders for machine tools B23Q3/00; handles for hand implements B25G) · CPC title

• Y10S83/956

  Ultrasonic · CPC title

• B26D7/086

  by vibrating, e.g. ultrasonically · CPC title

• B81C1/00492

  Processes for surface micromachining not provided for in groups B81C1/0046 - B81C1/00484 · CPC title