CN202356982U - Real time monitoring system for working condition of boring bar - Google Patents
Real time monitoring system for working condition of boring bar Download PDFInfo
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- CN202356982U CN202356982U CN2011204171330U CN201120417133U CN202356982U CN 202356982 U CN202356982 U CN 202356982U CN 2011204171330 U CN2011204171330 U CN 2011204171330U CN 201120417133 U CN201120417133 U CN 201120417133U CN 202356982 U CN202356982 U CN 202356982U
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- boring bar
- intermediate station
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Abstract
The utility model relates to a real time monitoring system for the working condition of a boring bar, comprising a boring bar end, a signal detection device for monitoring the vibration signal for the boring bar, an upper computer for analyzing and processing the monitored vibration signal, and an intermediate station for realizing the communication between the signal detection device and the upper computer; the control command sent from the upper computer is transmitted to the intermediate station; the intermediate station sends the control command to the signal detection device through wireless communication mode and receives the vibration signal sent by the signal detection device; the signal detection device sends the vibration data to the intermediate station through wireless communication mode; and the vibration signal is sent to the upper computer through a serial port. The real time monitoring system for the working condition of a boring bar has the advantages of being convenient for mounting and having fast response speed and high anti-interference capability.
Description
Technical field
The utility model relates to a kind of boring bar duty real-time monitoring system.
Background technology
The constantly development of current machinery manufacturing industry technology, accurate and ultraprecise is processed has become the important component part that modern mechanical is made.It is precision machined a kind of that horizontal boring machine belongs to, and is mainly used in the fine finishining that machining high-precision hole or one-time positioning are accomplished a plurality of holes.Boring bar belongs to cantilever beam structures, in the boring process, is in and very easily produces self-excited vibration between free-ended boring cutter and the workpiece, destroys the stability of process, causes the workpiece machining surface quality sharply to worsen, and reduces cutter life, influences working (machining) efficiency.Therefore, the boring bar duty is monitored in real time seem very important.And, can't adopt traditional line detecting method that has to record the vibration signal at boring cutter place because boring bar is in rotation status in the course of the work.
The utility model content
Existingly there is line detecting method can't record the vibration signal at boring cutter place when the boring bar rotation status for overcoming; It is a kind of based on wireless communication technology that the utility model provides; Can directly under the boring bar rotation status, record boring cutter place vibration signal; And need not to change cutter structure, boring bar duty real-time monitoring system easy for installation.
Boring bar duty real-time monitoring system; Comprise the signal supervisory instrument that is fixed in the boring bar end, is used to monitor the boring bar vibration signal; The vibration signal that monitors is carried out the host computer of analyzing and processing, and realize the intermediate station of communicating by letter between signal supervisory instrument and the host computer;
The control instruction that described host computer sends is sent to intermediate station, and described intermediate station sends to signal supervisory instrument through communication with control instruction, and receives the vibration signal that signal supervisory instrument sends; Described signal supervisory instrument is sent to intermediate station through communication with detected vibration data, and this vibration signal sends to host computer by intermediate station through serial ports.
Further; Described signal supervisory instrument comprises the acceleration transducer that is fixed on the boring bar; The vibration detection power module of power supply is provided for signal supervisory instrument; The vibration signal processing module that the vibration signal that degree of will speed up sensor senses amplifies and samples is used for the memory module of store sample after vibration signal, and the vibration detection wireless communication module that carries out data interaction with intermediate station; The vibration signal processing module is encoded to sent vibration signal, sends to intermediate station through the vibration signal of encoding through the vibration detection wireless communication module.
Further, fixing two acceleration transducers on the described boring bar, two acceleration transducer quadratures.Be provided with the annulus matrix that is socketed on the boring bar between described acceleration transducer and the boring bar, two acceleration transducers are fixed on the circumference of annulus matrix, and the annulus matrix is fixed on the boring bar through trip bolt; Signal supervisory instrument adopts the annular circuit board; The annular circuit board is fixed on the side of annulus matrix through screw; Vibration signal processing module, wireless communication module, memory module and vibration detection power module all adopt surface mount elements, and each surface mount elements evenly distributes along the circumference of annulus matrix.
Further, built-inly in the vibration signal processing module can guarantee the uniformity of sampled result simultaneously to 16 ∑s-Δ analog-digital converter of two-way analog signal sampling in time domain; The data signal that the analog-digital converter sampling obtains deposits in the memory module, and signal deposits memory module in after changing through A/D, is provided with the reference circuit that reference voltage is provided for analog-digital converter in the vibration detection power module.
The vibration signal processing module reads the data in the memory module, is transferred to wireless communication module after data are encoded; The vibration signal processing module is come the configuration-system operational factor according to the configuration order from host computer that wireless communication module receives, sample frequency and a sampling time of configuration monitor signal, parameters such as the operating frequency of configuration wireless communication module and transmitted power; The vibration signal processing module is according to the mode of operation of instruction adjustment wireless communication module; The vibration signal processing module is in low power consumpting state when idle, when handling request, can return to normal operating conditions rapidly, and its state only needs several microseconds conversion time, can accomplish timely response process request, prolongs the working time of system.
Further, the vibration detection power module is included as the main power circuit of vibration signal processing module and powered, for sensor provides the constant-current source circuit of stabling current and the reference circuit of reference voltage is provided for analog-digital converter; Main power circuit is made up of super low-power consumption voltage stabilizing chip and battery.The voltage stabilizing chip has the input voltage range of the operating current and the broad of microampere order.In order to reduce the volume and weight of electric power system, can use button cell to supply power as system.
Further; Described intermediate station comprises the intermediate station wireless communication module that the control instruction from host computer is sent to signal supervisory instrument; To the intermediate station signal processing module of decoding from the vibration signal of signal supervisory instrument and encoding to sent control instruction be the intermediate station power module of intermediate station wireless communication module and the power supply of intermediate station signal processing module; The intermediate station signal processing module is communicated by letter with host computer through the RS232 serial ports, realizes the reliable transmission of data.Intermediate station wireless communication module and intermediate station signal processing module adopt identical hardware respectively with wireless communication module and vibration signal processing module in the signal supervisory instrument.
The utility model adopts acceleration transducer to obtain the vibration signal of boring bar, through wireless transmission method vibration signal is transferred to host computer through intermediate station, and calculating, discern boring bar current by host computer is to be in stable state or flutter state.When flutter appearred in boring bar, host computer sent warning, reminded the staff to note.
The utlity model has advantage easy for installation, that response speed is fast, antijamming capability is strong; The utility model utilizes wireless communication technology to overcome the problem of rotation type cutter difficult wiring, has realized the real-time monitoring of boring bar duty.The technical scheme of the utility model also can be used for the on-line monitoring of other rotation type cutter.
Description of drawings
Fig. 1 is the block diagram of the utility model real-time monitoring system.
Fig. 2 is the DFD of the utility model.
Fig. 3 is the utility model input transmission block diagram.；
Fig. 4 is the utility model pattern-recognition flow chart.
Fig. 5 is the utility model signal supervisory instrument structure chart.
Fig. 6 is the utility model signal supervisory instrument flow chart.
Fig. 7 is the utility model intermediate station flow chart.
The specific embodiment
With reference to accompanying drawing, further specify the utility model:
Boring bar duty real-time monitoring system; Comprise the signal supervisory instrument that is fixed in the boring bar end, is used to monitor the boring bar vibration signal; The vibration signal that monitors is carried out the host computer of analyzing and processing, and connect the intermediate station of communicating by letter between signal supervisory instrument and the host computer;
The control instruction that host computer sends is sent to intermediate station, and intermediate station sends to signal supervisory instrument through communication with control instruction, and receives the vibration signal that signal supervisory instrument sends; Signal supervisory instrument is sent to intermediate station through communication with detected vibration signal, and this vibration signal sends to host computer by intermediate station through serial ports;
Host computer may further comprise the steps (as shown in Figure 4) to the analyzing and processing of vibration signal:
1), respectively every group of historical vibration signal process characteristic parameter extraction obtained the characteristic feature parameter of vibration signal, set up characteristic vector; Obtain the status information of every group of historical vibration signal through time frequency analysis; Every eigenvectors and corresponding status information are made up the learning sample of SVMs respectively as input and output parameter; Described status information refers to boring bar and is in stable state or flutter state;
2), select kernel function, the input learning sample carries out sample learning in SVMs, obtain the accurate mapping relations of input and output parameter, these mapping relations are the disaggregated model based on SVMs;
3), calculating is from the characteristic vector of the real-time vibration signal of signal supervisory instrument; With this characteristic vector as sample to be identified; Sample to be identified is input to carries out pattern-recognition in the disaggregated model, pattern-recognition judges that current boring bar is in stable state or is in the flutter state;
4), sample to be identified as new learning sample be added in the SVMs, to improve the recognition capability of disaggregated model.
Signal supervisory instrument comprises the acceleration transducer that is fixed on the boring bar; The vibration detection power module of power supply is provided for signal supervisory instrument; The vibration signal that degree of will speed up sensor senses amplify and sample, to the vibration signal processing module of vibration data coding and control instruction decoding; The memory module that is used for store sample after vibration data reaches the vibration detection wireless communication module that carries out data interaction with intermediate station.
As shown in Figure 6, signal supervisory instrument start back gets into initialization, and initialization is mainly accomplished the configuration of wireless communication module operational factor and distributed the memory space of Various types of data; After initialization was accomplished, system was in wait state, waited for receiving the host computer configuration-direct that intermediate station sends; If receive configuration-direct, then device is carried out parameter configuration by instruction, after the completion configuration, system is in wait state; If receive the sampling instruction that host computer sends, the signal of then by sample frequency of setting and sampling time acceleration transducer being exported is sampled and is stored in the memory module; If receive the transmission instruction that host computer sends, then read the Monitoring Data in the memory module and data are encoded, send through the vibration detection wireless communication module then.
The vibration signal processing module adopts low-power scm MSP430F42X0, and memory module adopts the FRAM (ferroelectric RAM) of super low-power consumption, and the vibration detection wireless communication module adopts low-power consumption radio frequency chip nRF905.
Preserve the operational factor and the Monitoring Data of vibration detection device in the memory module; The high speed data access speed of FRAM can in time deposit Monitoring Data wherein in, avoids loss of data, guarantees the continuity of data; The signal supervisory instrument initialization or reset after can from memory module, read operational factor.
Low-power consumption radio frequency chip nRF905 has two kinds of mode of operations, realizes the reception and the emission of data, and the dynamic adjustable of operating frequency and transmitting power can satisfy the requirement of different monitoring of environmental; Be connected with the vibration signal processing module through the SPI interface, guarantee communication quality and speed; Wireless communication module 1000 meters of communication distances under spacious environment satisfy communicating requirement; Build idle pulley and shutdown mode in the transmitting chip, be easy to realize energy-conservation.
Acceleration transducer is selected the IC piezoelectric acceleration transducer for use; The acceleration transducer of quadrature can be measured the vibration situation of boring cutter on level and vertical both direction respectively; The IC piezoelectric transducer is a kind of low-impedance voltage type sensor, and the voltage output signal of low-resistance will directly changed and zoom into to the built-in charge amplifier of sensor in the charge signal that acceleration is directly proportional; Be provided with the constant-current source circuit that stabling current is provided for sensor in the vibration detection power module; Constant-current source circuit can be exported stabling current under the situation that various service conditions change, guarantee normal operation of sensor.
Built-inly in the vibration signal processing module can guarantee the uniformity of sampled result simultaneously to 16 ∑s-Δ analog-digital converter of two-way analog signal sampling in time domain; Signal deposits memory module in after changing through A/D, is provided with the reference circuit that reference voltage is provided for analog-digital converter in the vibration detection power module.
The vibration signal processing module reads the data in the memory module, is transferred to wireless communication module after data are encoded; The vibration signal processing module is come the configuration-system operational factor according to the configuration order from host computer that wireless communication module receives, sample frequency and a sampling time of configuration monitor signal, the operating frequency and the transmitted power parameter of configuration wireless communication module; The vibration signal processing module is according to the mode of operation of instruction adjustment wireless communication module; The vibration signal processing module is in low power consumpting state when idle, when handling request, can return to normal operating conditions rapidly, and its state only needs several microseconds conversion time, can accomplish timely response process request, prolongs the working time of system.
The vibration detection power module is included as the main power circuit of vibration signal processing module and powered, for sensor provides the constant-current source circuit of stabling current and the reference circuit of reference voltage is provided for analog-digital converter; Main power circuit is made up of super low-power consumption voltage stabilizing chip and battery.The voltage stabilizing chip has the input voltage range of the operating current and the broad of microampere order.In order to reduce volume and weight, can use button cell to supply power as system.
As shown in Figure 3; Described intermediate station module comprises the intermediate station wireless communication module that the control instruction from host computer is sent to signal supervisory instrument; To the intermediate station signal processing module of decoding from the vibration signal of signal supervisory instrument and encoding to sent control instruction be the intermediate station power module of intermediate station wireless communication module and the power supply of intermediate station signal processing module.Intermediate station wireless communication module and intermediate station signal processing module adopt identical hardware respectively with wireless communication module and vibration signal processing module in the signal supervisory instrument; Intermediate station adopts the RS232 serial communication with communicating by letter of host computer, realizes the reliable data transmission with host computer.
As shown in Figure 7, after initialization was accomplished in the intermediate station start, the intermediate station signal processing module was in wait state; Judge whether to receive the PC control instruction of sending,, then will instruct to send to vibration detection device by the intermediate station wireless communication module if receive the control instruction of host computer through serial ports; If do not receive serial communication, then judge whether to receive the signal that vibration monitoring device sends, if receive the signal of vibration detection device transmission and be judged as vibration data, then the data that receive are sent in the host computer through serial ports and preserve.
The utility model uses acceleration transducer to obtain the vibration signal of boring bar, through wireless transmission method vibration signal is transferred to host computer through the intermediate station module, calculates, discerns current stable state or the flutter state of being in of boring bar by host computer.When flutter appearred in boring bar, host computer sent warning, reminded the staff to note.
The utlity model has advantage easy for installation, that response speed is fast, antijamming capability is strong; The utility model utilizes wireless communication technology to overcome the problem of rotation type cutter difficult wiring, has realized the real-time monitoring of boring bar duty.The technical scheme of the utility model also can be used for the on-line monitoring of other rotation type cutter.
The described content of this specification embodiment only is enumerating the way of realization of utility model design; The protection domain of the utility model should not be regarded as and only limit to the concrete form that embodiment states, the protection domain of the utility model also reach in those skilled in the art according to the utility model design the equivalent technologies means that can expect.
Claims (7)
1. boring bar duty real-time monitoring system; Comprise the signal supervisory instrument that is fixed in the boring bar end, is used to monitor the boring bar vibration signal; The vibration signal that monitors is carried out the host computer of analyzing and processing, and connect the intermediate station of communicating by letter between signal supervisory instrument and the host computer;
Described host computer sends control instruction and is sent to intermediate station, and described intermediate station sends to signal supervisory instrument through communication with control instruction; Described signal supervisory instrument is sent to intermediate station through communication with detected vibration data, and this vibration data sends to host computer by intermediate station through serial ports.
2. boring bar duty real-time monitoring system as claimed in claim 1; It is characterized in that: described signal supervisory instrument comprises the acceleration transducer that is fixed on the boring bar; The vibration detection power module of power supply is provided for signal supervisory instrument; The vibration signal processing module that the vibration signal that degree of will speed up sensor senses amplifies and samples is used for the memory module of store sample after vibration signal, and the vibration detection wireless communication module that carries out data interaction with intermediate station; The vibration signal processing module is encoded to sent vibration signal, sends to intermediate station through the vibration signal of encoding through the vibration detection wireless communication module.
3. boring bar duty real-time monitoring system as claimed in claim 2 is characterized in that: fixing two acceleration transducers on the described boring bar, two acceleration transducer quadratures.
4. boring bar duty real-time monitoring system as claimed in claim 3; It is characterized in that: be provided with the annulus matrix that is socketed on the boring bar between described acceleration transducer and the boring bar; Two acceleration transducers are fixed on the circumference of annulus matrix, and the annulus matrix is fixed on the boring bar through trip bolt; Signal supervisory instrument adopts the annular circuit board; The annular circuit board is fixed on the side of annulus matrix through screw; Vibration signal processing module, vibration detection wireless communication module, memory module and vibration detection power module all adopt surface mount elements, and each surface mount elements evenly distributes along the circumference of annulus matrix.
5. boring bar duty real-time monitoring system as claimed in claim 2; It is characterized in that: in the vibration signal processing module built-in can be simultaneously to 16 ∑s-△ analog-digital converter of two-way analog signal sampling, the data signal that the analog-digital converter sampling obtains deposits in the memory module.
6. boring bar duty real-time monitoring system as claimed in claim 2; It is characterized in that: the vibration detection power module is included as the main power circuit of vibration signal processing module and powered; For sensor provides the constant-current source circuit of stabling current and the reference circuit of reference voltage is provided for analog-digital converter; Main power circuit is made up of super low-power consumption voltage stabilizing chip and battery.
7. boring bar duty real-time monitoring system as claimed in claim 2; It is characterized in that: described intermediate station comprises the intermediate station wireless communication module that the control instruction from host computer is sent to signal supervisory instrument; To the intermediate station signal processing module of decoding from the vibration signal of signal supervisory instrument and encoding to sent control instruction be the intermediate station power module of intermediate station wireless communication module and the power supply of intermediate station signal processing module; The intermediate station signal processing module is realized communicating by letter with host computer through serial ports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204171330U CN202356982U (en) | 2011-10-28 | 2011-10-28 | Real time monitoring system for working condition of boring bar |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204171330U CN202356982U (en) | 2011-10-28 | 2011-10-28 | Real time monitoring system for working condition of boring bar |
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| Publication Number | Publication Date |
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| CN202356982U true CN202356982U (en) | 2012-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011204171330U Expired - Fee Related CN202356982U (en) | 2011-10-28 | 2011-10-28 | Real time monitoring system for working condition of boring bar |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110103076A (en) * | 2019-05-08 | 2019-08-09 | 北京理工大学 | A kind of intelligent boring bar system of deep hole boring machining state real-time monitoring |
| CN111337214A (en) * | 2020-03-10 | 2020-06-26 | 大连理工大学 | Method for measuring stability of surface protection block based on acceleration sensor |
| CN111650417A (en) * | 2020-06-05 | 2020-09-11 | 东莞市凯格精机股份有限公司 | Scraper state detection method, device and system |
-
2011
- 2011-10-28 CN CN2011204171330U patent/CN202356982U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110103076A (en) * | 2019-05-08 | 2019-08-09 | 北京理工大学 | A kind of intelligent boring bar system of deep hole boring machining state real-time monitoring |
| CN110103076B (en) * | 2019-05-08 | 2021-02-02 | 北京理工大学 | Intelligent boring bar system for monitoring deep hole boring machining state in real time |
| CN111337214A (en) * | 2020-03-10 | 2020-06-26 | 大连理工大学 | Method for measuring stability of surface protection block based on acceleration sensor |
| CN111650417A (en) * | 2020-06-05 | 2020-09-11 | 东莞市凯格精机股份有限公司 | Scraper state detection method, device and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120801 Termination date: 20141028 |
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| EXPY | Termination of patent right or utility model |