Machining assistance method and the apparatus using the same

• US 9,817,385 B2
• Filed: 12/26/2014
• Issued: 11/14/2017
• Est. Priority Date: 11/12/2014
• Status: Active Grant

• Current Assignee: Industrial Technology Research Institute
• Original Assignee: Industrial Technology Research Institute
• Inventors: Shiu, Shih-Je, Lee, Chien-Yi, Lin, Yi-Ying, Wu, Po-Hsun, Bai, Tsung-Yi
• Primary Examiner(s): Brown, Michael J
• Application Number:
  US14/583,466
• Publication Number:
  US 20160132038A1
• Time in Patent Office: 1,054 Days
• Field of Search: 700170, 700175, 700176, 700159
• CPC Class Codes: E21B 44/04 in response to the torque of the drive ; Measuring drilling torque E21B44/06 takes precedence; measuring stresses in a well bore pipe E21B47/007
• CPC Class Codes: G05B 19/19 characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path
• CPC Class Codes: G05B 2219/32001 Computer assisted machining, signals guide operator to manual machine object
• CPC Class Codes: G05B 2219/36421 Assist in correction of position to form a circle or line
• CPC Class Codes: G05B 2219/36429 Power assisted positioning
• CPC Class Codes: G16Z 99/00 Subject matter not provided for in other main groups of this subclass

Abstract

A machining assistance method and an apparatus using the same are provided. The machining assistance method comprises following steps. Firstly, a circle correction path is received for driving a platform to perform a circular motion. Next, a driving torque of the server driver driving the platform is obtained. Then, whether the driving torque is changed to 0 is determined; if yes, a first position of the platform is recorded. Then, whether the driving torque is changed to a peak is determined; if yes, a second position of the platform is recorded. After that, the server driver is controlled to drive the platform according to a first position and a second position in a machining process.

Claims

1. A machining assistance method, comprising:

receiving a circle correction path for driving a platform to perform a circular motion by a machining apparatus;

obtaining a driving torque of a server driver driving the platform by the machining apparatus;

determining whether the driving torque is changed to 0 by the machining apparatus;

recording a first position of the platform if the driving torque is changed to 0 by the machining apparatus;

determining whether the driving torque is changed to a peak by the machining apparatus;

recording a second position of the platform if the driving torque is changed to a peak by the machining apparatus; and

in a machining process, controlling the server driver to drive the platform according to the first position and the second position by the machining apparatus;

wherein in the machining process, the server driver is controlled to drive the platform according to a curvature radius of a processing workpiece.

2. The machining assistance method according to claim 1, wherein in the machining process, as the distance between the first position and the second position increases, the driving torque of the server driver driving the platform decreases.

3. The machining assistance method according to claim 1, wherein in the machining process, as the distance between the first position and the second position increases, a driving speed of the server driver driving the platform decreases.

4. The machining assistance method according to claim 1, wherein in the machining process, as the curvature radius decreases, the driving torque of the server driver driving the platform increases.

5. The machining assistance method according to claim 1, wherein the in the machining process, as the curvature radius decreases, the driving speed of the server driver driving the platform decreases.

6. A machining apparatus, comprising:

a platform;

a circular measurement module for receiving a circle correction path;

a server driver for driving the platform to perform a motion;

a commutating tip measurement module for obtaining a driving torque of the server driver driving the platform, determining whether the driving torque is changed to 0, and determining whether the driving torque is changed to a peak;

a compensation module for recording a first position of the platform if the driving torque is changed to 0, and recording a second position of the platform if the driving torque is changed to the peak; and

a controller for controlling the server driver to drive the platform to perform a circular motion according to the circle correction path, and controlling the server driver to drive the platform according to the first position and the second position;

wherein the controller further;

controls the server driver to drive the platform according to a curvature radius of a processing workpiece.

7. The machining apparatus according to claim 6, wherein the server driver further:

drives the platform at a larger driving torque as the distance between the first position and the second position increases.

8. The machining apparatus according to claim 6, wherein the server driver further:

drives the platform at a lower driving speed as the distance between the first position and the second position increases.

9. The machining apparatus according to claim 6, wherein the server driver further:

drives the platform at a larger driving torque as the curvature radius decreases.

10. The machining apparatus according to claim 6, wherein the server driver further:

drives the platform at a lower driving speed as the curvature radius decreases.

11. A machining assistance method used in a platform comprising a server driver, wherein the method comprises:

receiving a circle correction path for driving the platform to perform a motion by the machining apparatus;

obtaining a driving torque of the server driver driving the platform to perform a motion by the machining apparatus;

determining whether the driving torque is changed to 0;

if yes, recording a first position of the platform by the machining apparatus;

determining whether the driving torque is changed to a peak;

if yes, recording a second position of the platform by the machining apparatus; and

creating at least a displacement compensation according to the first position and the second position by the machining apparatus.

12. A machining apparatus used in a platform comprising a server driver, wherein the machining apparatus comprises:

a circular measurement module for receiving a circle correction path;

a server driver for driving the platform to perform a motion;

a commutating tip measurement module for obtaining a driving torque of the server driver driving the platform to perform a motion, determining whether the driving torque is changed to 0, and determining whether the driving torque is changed to a peak; and

a compensation module for recording a first position of the platform if the driving torque is changed to 0, recording a second position of the platform if the driving torque is changed to the peak, and providing the first position and the second position to create at least a displacement compensation.