CN208374883U - A kind of more sensing and monitoring systems of cutting tool state - Google Patents
A kind of more sensing and monitoring systems of cutting tool state Download PDFInfo
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- CN208374883U CN208374883U CN201820507110.0U CN201820507110U CN208374883U CN 208374883 U CN208374883 U CN 208374883U CN 201820507110 U CN201820507110 U CN 201820507110U CN 208374883 U CN208374883 U CN 208374883U
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Abstract
The utility model provides a kind of more sensing and monitoring systems of cutting tool state, including multiple sensors for measuring cutting tool state and being converted into analog signal；The single-chip microcontroller of one cutting tool state for identification, the single-chip microcontroller include to multisensor the analog signal pretreatment of collected cutting tool state determine the dsp chip of cutting tool state at the fpga chip of digital signal and for carrying out Classification and Identification to pretreated digital signal；One end of fpga chip is respectively connected with multiple sensors, and the other end is connected with the first end of dsp chip；And the display screen for showing cutting tool state, the display screen are connected with the second end of dsp chip.Implement the utility model, based on multi-sensor monitoring and diagnosis cutting tool state, can overcome the problems, such as that single-sensor because failing to judge and judging by accident brought by different physical field signal, improves the accuracy of identification of cutting tool state.
Description
Technical field
The utility model relates to technology for mechanical fault diagnosis field and field of computer technology more particularly to a kind of cutter shapes
The more sensing and monitoring systems of state.
Background technique
Milling is to use the milling cutter of rotation as a kind of machining process of tool sharpening body surface, generally in milling machine or
It is carried out on boring machine, in addition to being capable of processing plane, groove, the gear teeth, screw thread and splined shaft, moreover it is possible to process more complicated type face, produce
Efficiency is higher, is widely used in the machinery manufacturing industry.
Component of the cutter as most easy damaged in Milling Processes carries out timely and effectively status monitoring and failure to it
It identifies most important.According to statistics, in Milling Process, cutter failure usually accounts for about the 7-20% of lathe downtime, and frequent
Shutdown tool changing seriously affect the production efficiency of enterprise.In addition, the timeliness of tool changing directly influences the quality and cost of processing,
On the one hand, if tool changing not in time, bad knife will have a direct impact on the mass propertys such as piece surface finish, dimensional accuracy, it is serious also
It will lead to workpiece to scrap, increase processing cost；On the other hand, if too early tool changing, cutter does not arrive its Acceptable life also and just loses
It abandons, causes the waste of material, increase tool changing cost.Therefore, research carries out real-time cutter failure prison in Milling Processes
Survey and identify have very important significance to reduction processing cost tool.
In recent years, sensor-based indirect type tool condition monitoring (TCM) method receives the extensive of domestic and foreign scholars
Concern.Sensor-based TCM method is the coherent signal that cutting process is obtained by sensor, by signal processing and
Statistical analysis technique estimates cutting tool state, to achieve the purpose that real-time monitoring cutter operating status.However, at present mostly
Number, which is studied, lays particular emphasis on single-sensor monitoring and diagnosis, but since different physical field signal to cutter different conditions, (break by abrasion
Damage etc.) accuracy of identification be not quite similar, therefore the monitoring method based on single-sensor be easy to cause cutting tool state fail to judge and
Erroneous judgement.
Utility model content
The technical problem to be solved by the embodiment of the utility model is, providing a kind of more sensor monitoring systems of cutting tool state
System can overcome single-sensor because brought by different physical field signal based on multi-sensor monitoring and diagnosis cutting tool state
The problem of failing to judge and judging by accident improves the accuracy of identification of cutting tool state.
In order to solve the above-mentioned technical problem, the utility model embodiment provides a kind of more sensor monitoring systems of cutting tool state
System, comprising:
Multiple sensors for measuring cutting tool state and being converted into analog signal；
The single-chip microcontroller of one cutting tool state for identification, the single-chip microcontroller include to the collected cutting tool state of multisensor institute
Analog signal pretreatment at digital signal fpga chip and for pretreated digital signal carry out Classification and Identification come
Determine the dsp chip of cutting tool state；Wherein, one end of the fpga chip is respectively connected with the multiple sensor, the other end
It is connected with the first end of the dsp chip；And
For showing that the display screen of cutting tool state, the display screen are connected with the second end of the dsp chip.
Wherein, it is integrated on the fpga chip and turns the analog-digital converter of digital signal, for buffering for analog signal
The FIFO buffer and elliptic function IIR bandpass filter of signal and data；Wherein,
One end of the analog-digital converter is respectively connected with the multiple sensor, the other end and the FIFO buffer
One end is connected；
The other end of the FIFO buffer is connected with one end of the elliptic function IIR bandpass filter；
The other end of the elliptic function IIR bandpass filter is connected with the first end of the dsp chip.
Wherein, the single-chip microcontroller further includes the flash storage being connected with the third end of the dsp chip.
Wherein, the display screen is liquid crystal display.
Wherein, the single-chip microcontroller and the display screen are integrated on same device.
Wherein, the multiple sensor includes acoustic emission sensor, dynamic cutting force snesor and vibration and abrasion number
According to acquisition sensor.
Implement the utility model embodiment, has the following beneficial effects:
The utility model is identified the degree such as abrasion, breakage under cutter different conditions by multiple sensors and is converted into
It is next quasi- to be sent into dsp chip progress Classification and Identification after FPGA analog-to-digital conversion and pretreatment in single-chip microcontroller for corresponding analog signal
True identifies cutting tool state, and is shown by display screen, so as to overcome single-sensor to believe because of different physical field
The problem of failing to judge and judge by accident brought by number improves the accuracy of identification of cutting tool state.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
It puts, obtains other drawings based on these drawings the scope for still falling within the utility model.
Fig. 1 is the system structure diagram of the more sensing and monitoring systems of cutting tool state provided by the embodiment of the utility model；
Fig. 2 is the system structure diagram of fpga chip in Fig. 1；
Fig. 3 is the logic circuit connection schematic diagram of Fig. 1.
Specific embodiment
It is practical new to this below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer
Type is described in further detail.
It as shown in Figure 1 to Figure 3, is the more sensing and monitoring systems of a kind of cutting tool state provided in the utility model embodiment,
Include:
Multiple sensors 1 for measuring cutting tool state and being converted into analog signal, multiple sensors include that sound emission passes
Sensor, dynamic cutting force snesor and vibration and wear data acquire sensor, for acquiring the data of cutter different conditions；
The single-chip microcontroller 2 of one cutting tool state for identification, the single-chip microcontroller 1 include to the 1 collected cutter shape of institute of multisensor
The analog signal of state is pre-processed at the fpga chip 21 of digital signal and for carrying out classification knowledge to pretreated digital signal
Dsp chip 22 not to determine cutting tool state；Wherein, one end of fpga chip 21 is respectively connected with multiple sensors 1, the other end
It is connected with the first end a1 of dsp chip 22；And
For showing the display screen 3 of cutting tool state, which is connected with the second end a2 of dsp chip 22, and the display
Screen is liquid crystal display.
Certainly, single-chip microcontroller 2 further includes the flash storage 23 being connected with the third end a3 of the dsp chip 22, is had in this way
It is stored conducive to the data handled dsp chip 22.
In the utility model embodiment, single-chip microcontroller 2 and display screen 3 are integrated on same device.
In the utility model embodiment, it is integrated with the modulus for turning digital signal for analog signal on fpga chip 21 and turns
Parallel operation 211, for the FIFO buffer 212 and IIR bandpass filter 213 of buffering signals and data；Wherein,
One end of analog-digital converter 211 is respectively connected with multiple sensors 1, one end of the other end and FIFO buffer 212
It is connected；
The other end of FIFO buffer 212 is connected with one end of IIR bandpass filter 213；
The other end of IIR bandpass filter 213 is connected with the first end a1 of dsp chip 22.
The working principle of the more sensing and monitoring systems of cutting tool state is in the utility model embodiment, and multiple sensors 1 acquire
Signal is delivered in the fpga chip 21 of single-chip microcontroller 2 by signal by serial ports, and sampled data first passes around analog-digital converter 211
Cached in FIFO buffer 212 after A/D conversion, after the data of acquisition are full, just read from FIFO buffer 212 data into
Row Fourier FFT transform and through IIR bandpass filter 213 carry out bandpass filtering treatment；
The data of bandpass filtering treatment are delivered to progress FFT inverse transformation in dsp chip 22, converts and reads Flash and deposit
The parameter that sample data is trained and vector stored in reservoir 23, to carry out sampled data with after optimization
Multicore EML classifies；
Data are shown after D/A is converted by display screen 3 after classification, human-computer interaction are realized, when cutting tool state is in
When being seriously worn or is damaged, display screen then prompts tool changing.
Implement the utility model embodiment, has the following beneficial effects:
The utility model is identified the degree such as abrasion, breakage under cutter different conditions by multiple sensors and is converted into
It is next quasi- to be sent into dsp chip progress Classification and Identification after FPGA analog-to-digital conversion and pretreatment in single-chip microcontroller for corresponding analog signal
True identifies cutting tool state, and is shown by display screen, so as to overcome single-sensor to believe because of different physical field
The problem of failing to judge and judge by accident brought by number improves the accuracy of identification of cutting tool state.
Above disclosed is only a kind of preferred embodiment of the utility model, certainly cannot be practical to limit with this
Novel interest field, therefore equivalent variations made according to the claim of the utility model still belong to what the utility model was covered
Range.
Claims (6)
1. a kind of more sensing and monitoring systems of cutting tool state characterized by comprising
Multiple sensors for measuring cutting tool state and being converted into analog signal；
The single-chip microcontroller of one cutting tool state for identification, the single-chip microcontroller include to multisensor collected cutting tool state mould
Quasi- Signal Pretreatment is determined at the fpga chip of digital signal and for carrying out Classification and Identification to pretreated digital signal
The dsp chip of cutting tool state；Wherein, one end of the fpga chip is respectively connected with the multiple sensor, the other end and institute
The first end for stating dsp chip is connected；And
For showing that the display screen of cutting tool state, the display screen are connected with the second end of the dsp chip.
2. the more sensing and monitoring systems of cutting tool state as described in claim 1, which is characterized in that be integrated on the fpga chip
Turn the analog-digital converter of digital signal, for the FIFO buffer and elliptic function of buffering signals and data for analog signal
IIR bandpass filter；Wherein,
One end of the analog-digital converter is respectively connected with the multiple sensor, one end of the other end and the FIFO buffer
It is connected；
The other end of the FIFO buffer is connected with one end of the elliptic function IIR bandpass filter；
The other end of the elliptic function IIR bandpass filter is connected with the first end of the dsp chip.
3. the more sensing and monitoring systems of cutting tool state as claimed in claim 2, which is characterized in that the single-chip microcontroller further includes and institute
State the connected flash storage in the third end of dsp chip.
4. the more sensing and monitoring systems of cutting tool state as claimed in claim 3, which is characterized in that the display screen is liquid crystal display.
5. the more sensing and monitoring systems of cutting tool state as claimed in claim 4, which is characterized in that the single-chip microcontroller and the display
Screen is integrated on same device.
6. the more sensing and monitoring systems of cutting tool state as claimed in claim 5, which is characterized in that the multiple sensor includes sound
Emission sensor, dynamic cutting force snesor and vibration and wear data acquire sensor.
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| CN201820507110.0U CN208374883U (en) | 2018-04-11 | 2018-04-11 | A kind of more sensing and monitoring systems of cutting tool state |
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| CN201820507110.0U CN208374883U (en) | 2018-04-11 | 2018-04-11 | A kind of more sensing and monitoring systems of cutting tool state |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111890127A (en) * | 2020-08-06 | 2020-11-06 | 南京航空航天大学 | Cutting state edge intelligent monitoring method based on online incremental wear evolution model |
-
2018
- 2018-04-11 CN CN201820507110.0U patent/CN208374883U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111890127A (en) * | 2020-08-06 | 2020-11-06 | 南京航空航天大学 | Cutting state edge intelligent monitoring method based on online incremental wear evolution model |
| CN111890127B (en) * | 2020-08-06 | 2022-09-20 | 南京航空航天大学 | Cutting state edge intelligent monitoring method based on online incremental wear evolution model |
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