Monitoring method of tool state in deep hole inner thread machining

A technology for internal thread processing and cutting tools, which is applied in the direction of manufacturing tools, metal processing equipment, metal processing machinery parts, etc., can solve the problems of poor processing accuracy and low pass rate, and achieve the effect of improving processing accuracy and ensuring processing safety

Inactive Publication Date: 2020-01-21
HUNAN INST OF TECH
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It shows that there is no way to monitor parameters such as tool wear and vibration during machining, which leads to poor machining accuracy and low pass rate of existing deep holes, variable groove width threads, etc.

Method used

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  • Monitoring method of tool state in deep hole inner thread machining
  • Monitoring method of tool state in deep hole inner thread machining
  • Monitoring method of tool state in deep hole inner thread machining

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Experimental program
Comparison scheme
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Embodiment Construction

[0025] In order to illustrate the present invention more specifically, the present invention is illustrated by the following specific embodiments:

[0026] The machining process of deep hole variable groove width thread is as figure 1 Shown.

[0027] Considering the actual working conditions of variable groove width thread processing, the two ends of the workpiece are clamped, and the tool cantilever penetrates deep into the workpiece to process the thread. The rigidity of the workpiece is usually large, and the impact on processing can be ignored. The tool cantilever extends into the workpiece to process the thread. , The rigidity is relatively low, which has a greater impact on processing. Therefore, considering the cantilever extension stiffness of the tool can meet the usual requirements. The dynamic model of the machining process is such as figure 2 Shown.

[0028] The dynamic equation is as follows

[0029]

[0030]

[0031] Where m is the modal mass of the toolholder, c is t...

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Abstract

The invention discloses a monitoring method of a tool state in deep hole inner thread machining. On the basis of a kinetic model and a stable area thereof in the cutting process, the relation betweenvibration energy in a special frequency band and tool wear is built. The method can be used for monitoring the tool wear state in the deep space inner thread, a machining method can be conveniently modified, machining precision is improved, and machining safety is ensured.

Description

Technical field: [0001] The invention relates to a monitoring method suitable for the state of a tool in deep hole internal thread processing, and belongs to the field of mechanical processing. [0002] technical background: [0003] In some thread processing with special requirements such as deep holes and variable groove width threads, because it is usually used as a pipeline equipment for oil and gas pipelines, it has the functions of sealing, high pressure resistance and easy disassembly. In order to meet its requirements, there are higher requirements for thread processing accuracy. In improving the machining accuracy, the monitoring of the machining state of the machining process, such as tool wear, vibration during machining, and other parameters is crucial to improving the machining quality. It shows that there is currently no method to monitor parameters such as tool wear and vibration during machining, which leads to poor machining accuracy and low pass rate of existing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q17/09B23G1/18B23G1/44
CPCB23G1/18B23G1/44B23Q17/0957B23Q17/0971
Inventor 张蓉陈雪林王丽娟肖志信
Owner HUNAN INST OF TECH
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