Tool management system and method thereof

Patent metadata

Field	Value
Publication number	US-10209702-B2
Application number	US-201615383949-A
Country	US
Kind code	B2
Filing date	Dec 19, 2016
Priority date	Aug 19, 2016
Publication date	Feb 19, 2019
Grant date	Feb 19, 2019

Abstract

A tool management system of machine tools includes a reader, a receiver, a storage unit, a processor and a control unit. The reader is configured for reading at least one category parameter of the tool according to a tool index code of the tool. The receiver is configured for receiving real-time process information of the tool with a preset periodicity. The storage unit is configured for storing the tool index code, the category parameter, and the real-time process information. The processor is configured for processing a weighting algorithm to obtain a result according to the category parameter and the real-time process information. The control unit is configured for sending a control instruction according to the result.

First claim

What is claimed is:

1. A tool management system of machine tools, applied to at least one tool, and comprising:
a reader configured for reading at least one category parameter of the tool according to a tool index code of the tool;
a receiver configured for receiving real-time process information of the tool with a preset periodicity;
a storage unit configured for storing the tool index code, the category parameter, and the real-time process information;
a processor configured for processing a weighting algorithm to obtain a result according to the category parameter and the real-time process information; and
a control unit configured for sending a control instruction according to the result,
wherein the weighting algorithm is a total lifetime (T) of the tool minus an accumulated using time (Ta) and a real-time using time (Trt),
wherein the real-time using time is defined as a summation of products, each of which is a product of the preset periodicity, a shaft current ratio and a vibration magnitude ratio, wherein the shaft current ratio is a ratio of a shaft current value to a shaft current base value, and the vibration magnitude ratio is a ratio of a vibration magnitude to a vibration base magnitude.

2. The tool management system according to claim 1 , wherein the real-time process information at least comprises a shaft current value and vibration magnitude of a preset part.

3. The tool management system according to claim 1 , wherein the category parameter comprises a tool life category and a tool using base value category.

4. The tool management system according to claim 1 , wherein the result comprises remaining lifetime (Tr) of the tool.

5. The tool management system according to claim 1 , wherein the control instruction comprises to stop using.

6. The tool management system according to claim 1 , further comprising a network interface that is configured for receiving the category parameter from a remote host, and sending the real-time process information and the result to the remote host.

7. A tool management system of machine tools, applied to at least one tool, and comprising:
a network interface configured for receiving a tool index code of the tool, reading at least one category parameter according to the tool index code, and receiving real-time process information with a preset periodicity;
a storage unit configured for recording the tool index code, the category parameter and the real-time process information;
a processor configured for executing a weighting algorithm to obtain a result according to the category parameter and the real-time process information; and
a control unit configured for sending a control instruction, according to the result, via the network interface,
wherein the weighting algorithm is a total lifetime (T) of the tool minus an accumulated using time (Ta) and a real-time using time (Trt),
wherein the real-time using time is defined as a summation of products, each of which is a product of the preset periodicity, a shaft current ratio and a vibration magnitude ratio, wherein the shaft current ratio is a ratio of a shaft current value to a shaft current base value, and the vibration magnitude ratio is a ratio of a vibration magnitude to a vibration base magnitude.

8. The tool management system according to claim 7 , wherein the real-time process information comprises a shaft current value and vibration magnitude of a preset part.

9. The tool management system according to claim 7 , wherein the category parameter comprises a tool life category and a tool using base value category.

10. The tool management system according to claim 7 , wherein the result comprises remaining lifetime (Tr) of the tool.

11. The tool management system according to claim 7 , wherein the control instruction comprises to stop using.

12. A method for tool management of machine tools, applied to at least one tool, and the method comprising steps of:
according to a tool index code of the tool, reading at least one category parameter of the tool;
receiving real-time process information of the tool with a preset periodicity;
according to the category parameter and the real-time process information, executing a weighting algorithm to obtain a result;
determining whether the result is matched to a condition;
if the result is matched to the condition, sending a control instruction; and
if the result is not matched to the condition, redoing the steps from the step of receiving the real-time process information,
wherein the weighting algorithm is a total lifetime (T) of the tool minus an accumulated using time (Ta) and a real-time using time (Trt),
wherein the real-time using time is defined as a summation of products, each of which is a product of the preset periodicity, a shaft current ratio and a vibration magnitude ratio, wherein the shaft current ratio is a ratio of a shaft current value to a shaft current base value, and the vibration magnitude ratio is a ratio of a vibration magnitude to a vibration base magnitude.

13. The method according to claim 12 , wherein the real-time process information comprises a shaft current value and vibration magnitude of a preset part.

14. The method according to claim 12 , wherein the category parameter comprises a tool life category and a tool using base value category.

15. The method according to claim 12 , wherein the result comprises remaining lifetime (Tr) of the tool.

16. The method according to claim 12 , wherein the control instruction comprises to stop using.

Assignees

• Ind Tech Res Inst

Inventors

• Cheng Chih-Ping
• Mai Chao-Chuang

Classifications

• G05B2219/37252

  Life of tool, service life, decay, wear estimation · CPC title

• G05B2219/36291

  Cutting, machining conditions by empirical equation, like tool life · CPC title

• Y02P90/205

  Cross-Sectional Technologies · mapped topic

• G05B2219/33079

  Table with functional, weighting coefficients, function · CPC title

• G05B19/4065 Primary

  Monitoring tool breakage, life or condition · CPC title