Interference preventing method and device

• US 8,930,014 B2
• Filed: 06/27/2011
• Issued: 01/06/2015
• Est. Priority Date: 01/12/2011
• Status: Active Grant

• Current Assignee: Industrial Technology Research Institute
• Original Assignee: Industrial Technology Research Institute
• Inventors: Su, Hsin-Chuan, Hsu, Chih-Yuan, Liang, Shuo-Peng
• Primary Examiner(s): ORTIZ RODRIGUEZ, CARLOS R
• Application Number:
  US13/169,684
• Publication Number:
  US 20120179286A1
• Time in Patent Office: 1,289 Days
• Field of Search: 700/178, 700/19
• US Class Current: 700/178
• CPC Class Codes: B23Q 17/2208 Detection or prevention of collisions
• CPC Class Codes: G05B 19/4061 Avoiding collision or forbidden zones

Abstract

An interference preventing method applied on a machining machine includes the following steps. Firstly, a control command is provided in response to an operation event. Next, protection information corresponding to a protection target component is provided. Then basic envelop of the protection target component is obtained. Then the basic envelop is segmented into a number of sub protection blocks according to a multi-hierarchical protection parameter and sub protection blocks not linked with the protection target component are removed, so as to determine a multi-hierarchical interference protection area. Next, whether an interference event of the multi-hierarchical interference protection area and other components occurs, so as to determine whether interference event of the protection target component occurs; if so, control signal is provided to control the processing operation of the machining machine.

Claims

1. An interference preventing device for a machining machine, comprising:

a parameter database module, providing protection information corresponding to a target component of the machining machine in response to a control command; and

a control module, providing the control command in response to an operation event, the control module further obtaining a basic envelope of the target component by executing envelop calculation for the target component according to the protection information, and the control module further obtaining a multi-hierarchical area by having the basic envelope segmented into a plurality of sub-areas according to a multi-hierarchical protection parameter and removing a part of the plurality of sub-areas not interlaced with the target component, wherein,

the control module determines whether an interference event has occurred between the multi-hierarchical area and a correlated object, so as to determine whether an interference event occurs on the target component and provide a control signal to control the operation of the machine when the interference event is detected;

the control module further determines a size of the basic envelope according to a dynamic protection parameter corresponds to distance information indicating a distance between the target component and the correlated object, so as to provide the multi-hierarchical area, which is dynamic adjustable, for the target component according to the dynamic protection parameter;

wherein

the greater the distance between the target component and the correlated object is, the higher a value of the dynamic protection parameter is, and a larger size of the basic envelope corresponds to, while the smaller the distance between the target component and the correlated object is, the smaller the value of the dynamic protection parameter is, and a smaller size of the basic envelop corresponds to.

2. The interference preventing device according to claim 1, further comprising:

a user input interface module, for triggering the operation event; and

a user output interface module, controlled by the controller module for displaying an operation of interference detection of the control module.

3. The interference preventing device according to claim 1, wherein the multi-hierarchical protection parameter corresponds to a feed rate information of the machining machine.

4. The interference preventing device according to claim 1, wherein the multi-hierarchical protection parameter corresponds to distance information indicating a distance between the target component and the correlated object.

5. The interference preventing device according to claim 1, wherein the dynamic protection parameter corresponds to feed rate information indicating a feed rate of the machining machine.

6. The interference preventing device according to claim 1, further comprising:

a communication interface module, connected to the machining machine, for providing the control signal provided by the control module to the machining machine, so as to control the operation of the machine.

7. The interference preventing device according to claim 1, further comprising:

a communication interface module, connected to the machining machine, for providing information indicating machine coordinate and feed rate of motion axes of the machining machine to the control module, and triggering the operation event in response to identification information provided by the machining machine.

8. The interference preventing device according to claim 1, wherein the protection information comprises exterior dimensional information of the target component.

9. An interference preventing method, for achieving interference protection operations of a machining machine, comprising:

providing a control command in response to an operation event;

providing protection information corresponding to a target component of the machining machine in response to the control command;

executing envelope calculation of the target component according to the protection information, so as to obtain a basic envelope;

determining a size of the basic envelope according to a dynamic protection parameter corresponds to distance information indicating a distance between the target component and a correlated object, so as to provide a multi-hierarchical area, which is dynamic adjustable, for the target component according to the dynamic protection parameter;

wherein

the greater the distance between the target component and the correlated object is, the higher a value of the dynamic protection parameter is, and a larger size of the basic envelope corresponds to, while the smaller the distance between the target component and the correlated object is, the smaller the value of the dynamic protection parameter is, and a smaller size of the basic envelop corresponds to;

obtaining the multi-hierarchical area by having the basic envelope segmented into a plurality of sub-areas according to a multi-hierarchical protection parameter and removing a part of the plurality of sub-areas not interlaced with the target component;

determining whether an interference event has occurred between the multi-hierarchical area and the correlated object, so as to determine whether an interference event occurs on the target component; and

when the interference event is detected, providing a control signal to control the operation of the machine.

10. The interference preventing method according to claim 9, further comprising:

displaying an operation of interference detection of the control module.

11. The interference preventing method according to claim 9, wherein the multi-hierarchical protection parameter corresponds to a feed rate of the machining machine.

12. The interference preventing method according to claim 9, wherein the multi-hierarchical protection parameter corresponds to distance information indicating a distance between the target component and the correlated object.

13. The interference preventing method according to claim 9, wherein the dynamic protection parameter corresponds to feed rate information indicating a feed rate of the machining machine.

14. The interference preventing method according to claim 9, wherein the protection information comprises exterior dimensional information of the target component.