CN105425722A - Numerical control milling machine vibration control system based on pre-embedded wireless sensor and control method thereof - Google Patents
Numerical control milling machine vibration control system based on pre-embedded wireless sensor and control method thereof Download PDFInfo
- Publication number
- CN105425722A CN105425722A CN201510769899.8A CN201510769899A CN105425722A CN 105425722 A CN105425722 A CN 105425722A CN 201510769899 A CN201510769899 A CN 201510769899A CN 105425722 A CN105425722 A CN 105425722A
- Authority
- CN
- China
- Prior art keywords
- vibration
- milling machine
- handle
- knife
- wireless
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/19—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path
Abstract
The invention provides an online vibration control system based on a pre-embedded MEMS wireless sensor and a control method using the system. The online vibration control system based on the pre-embedded MEMS wireless sensor is suitable for precise machining of various high-grade numerical control milling machines. The main components include the MEMS wireless sensor, a cutter handle and a computer. The control method concretely comprises the steps that 1 the wireless sensor is pre-embedded and fixed in the clamp head of the cutter handle; 2 a vibration allowed threshold of a spindle and the cutting process is set respectively; 3 after a cutter head is pre-installed, a milling machine is started to perform idle operation, and the vibration amplitude of a spindle system is tested; 4 and after vibration of the spindle meets the requirements, milling is performed on workpieces to be machined, and normal machining is performed when the vibration amplitude of the milling point of the cutter head is less than or equal to the set threshold; and the system automatically performs program adjustment to adjust milling speed and reduce amount of cutter feeding when the vibration amplitude of the milling point of the cutter head is greater than the set threshold, and out-of-tolerance amplitude compensation is also performed until the vibration amplitude of the milling point is less than the set threshold.
Description
Technical field
The invention belongs to vibration test technology field, be specifically related to a kind of CNC milling machine vibration control system based on pre-buried wireless senser and method.
Background technology
Numerically-controlled machine is manufacturing machine-tool, and milling machine is the first important official of numerically-controlled machine.Milling machine processing plane, groove, point tooth part, particularly helical surface and various curved surface can have its unique advantage.To manufacturing industry such as processing Aeronautics and Astronautics, boats and ships, automobile and moulds, all need high-grade, digitally controlled machine tools as its important tool of production.Efficiently, the Main Trends of The Development that accurate, reliable, intelligence is its high-grade CNC milling machine, but, high-grade CNC milling machine vibration and control to be always one of important problem of facing of countries in the world machine tool industry.Along with the requirement to high-precision part, machining precision is developed to submicron order, even nanoscale by grade, micron order, and vibration problem is outstanding all the more.In high precision process, as long as there is faint vibration will have a strong impact on part crudy, knife mark may be left on machined surface, increase Part Surface Roughness, the cold hardening of aggravation matallic surface layer, vibration also can make cutting wear sharply decline, and even causes crumbling of blade.
At present, the detection method being usually used in machine vibration measurement is traditional contact measurement method.Although contact type measurement technology has certain application in the physical dimension and three-dimensional appearance, cutter parameters, tool wear monitoring etc. of Workpiece fixing and setting coordinate, measurement part, but also there is unbalance stress, Measuring Time is long, and measurement point spatial resolution is not high enough, easily scratch surface of the work, can not measure the birth defects such as soft object.Meanwhile, the weight of touch sensor own can bring certain additional mass and stiffness effect, can destroy the original vibrational state of structure in a way, so be not suitable for the vibration testing light structures, as the frequency response function of point of a knife on machine tool chief axis.Meanwhile, due to the impact by centrifugal force, touch sensor is also very restricted in the application of the occasions such as machine tool chief axis High Rotation Speed, cut.
For high-grade, digitally controlled machine tools, realize on-line vibration test and control, its technological difficulties are:
(1) how vibration-testing sensor is installed on high-grade, digitally controlled machine tools, and sets up the vibration relation of vibration measuring point and main shaft, cutting point;
(2) how vibration signal transmits and transmission path;
(3) how on-line vibration Inspect and control.
Show with research through practical operation experience: the vibration of milling machine is mainly relevant with spindle vibration, cutting speed, the depth of cut.The present invention has fully utilized the advantage of piezoelectric ceramics, have employed built-in type method and MEMS sensor is assembled into cutter hub inside, sunykatuib analysis obtains the vibration relation of vibration measuring point and main shaft, cutting point, and to be processed milling machine by the mode of transmission of wireless signals and reception and carry out real-time vibration monitoring and control.
Summary of the invention
Goal of the invention: the invention provides a kind of high-grade CNC milling machine on-line vibration control system based on pre-buried wireless senser and control method, its object is to solve that the vibration of CNC milling machine causes the crumbling of blade, vibration survey resolution is not high enough, easily because of vibration cutting scratch surface of the work, etc. birth defect, and overcome that vibration-testing sensor is difficult to be installed on milling machine, vibration signal is difficult to the technological difficulties such as transmission.
Technical scheme:
The present invention is achieved by the following technical solutions:
Based on a CNC milling machine vibration control system for pre-buried wireless senser, it is characterized in that: this system comprises wireless MEMS acceleration transducer, handle of a knife, computing machine; Described wireless MEMS acceleration transducer is fixed on wireless senser base by sensor localization nail; Wireless senser base is fixed in the endoporus of handle of a knife by gib screw; Described wireless MEMS acceleration transducer is connected with computing machine by Bluetooth signal.
The described CNC milling machine vibration control system based on pre-buried wireless senser, is characterized in that: described wireless senser base is the T-shaped base of band shoulder; The interposition of described handle of a knife is equipped with Signal transmissions hole.
Based on a CNC milling machine vibration control method for pre-buried wireless senser, it is characterized in that: the method is realized by following steps:
(1) positioning base of MEMS sensor is processed as the T-shaped base of band shoulder, for MEMS sensor is with addition of wireless blue tooth module;
(2) central through hole of standard elastic handle of a knife is carried out the segment reaming of installing with applicable MEMS sensor; 2 Signal transmissions holes are opened in handle of a knife centre position;
(3) wireless MEMS sensor is fixed to elasticity handle of a knife endoporus place in the mode be threaded;
(4) handle of a knife assembling sensor is preloaded onto on vertical numerical control milling machine, computing machine is connected by bluetooth with MEMS sensor, and the vibration threshold of spindle system vibration threshold value and cutting point is to the end set;
(5) start milling machine idle running, the vibration amplitude of test axis system, and the vibration amplitude of main shaft vibration measuring point and setting threshold values are contrasted;
(6) carry out milling to machined part, the vibration data recorded according to MEMS sensor adjusts the cutting speed of milling machine, the depth of cut, and carries out overproof amplitude compensation simultaneously.
Advantage and effect: compared with not using the milling machine of this system, the present invention can predict main shaft and the bad flutter of cutting point fast, improves machining precision and working (machining) efficiency, has saved the cost of charp tool, extend the milling machine life-span.
accompanying drawing illustrates:
Fig. 1 is the handle of a knife schematic diagram having installed MEMS sensor in the present invention additional;
Fig. 2 is the handle of a knife cut-open view having installed MEMS sensor in the present invention additional;
Fig. 3 is handle of a knife P direction view in the present invention;
Fig. 4 is the MEMS sensor fundamental diagram in the present invention;
Fig. 5 is vibration control process flow diagram of the present invention;
Mark in figure: 1 handle of a knife, 2 Signal transmissions holes, 3 wireless MEMS acceleration transducers, 4 wireless senser bases, 5 gib screws, 6 sensor localization nails.
embodiment:
The present invention is a kind of CNC milling machine vibration control system based on pre-buried wireless senser, and based on the control method of this system.Technological thought of the present invention is: adopt built-in type method that MEMS sensor is assembled into cutter hub inside, sunykatuib analysis obtains the vibration relation of vibration measuring point and main shaft, cutting point, and to be processed milling machine by the mode of transmission of wireless signals and reception and carry out real-time vibration monitoring and control.
The CNC milling machine vibration control system based on pre-buried wireless senser in the present invention, as illustrated in the accompanying drawings from 1 to 3, mainly contain and form with lower part: wireless MEMS sensor (including MMA9559L type 3-axis acceleration sensor), elasticity handle of a knife (standard BT40-ER-2-100L elasticity handle of a knife), portable computer (including Bluetooth signal receiver).Wireless MEMS acceleration transducer 3 is fixed on wireless senser base 4 by sensor localization nail 6; Wireless senser base 4 is fixed in the endoporus of handle of a knife 1 by gib screw 5; Described wireless MEMS acceleration transducer 3 is connected with computing machine by Bluetooth signal.
The CNC milling machine vibration control method based on pre-buried wireless senser in the present invention, is specially:
Step 1: existing a kind of MEMS sensor that can be used for Omnibearing vibrating signal testing transformed, transformation part is: positioning base: change the band T-shaped back seat of shoulder (as shown in Figure 2) into; (2) with addition of wireless blue tooth module, to realize Wireless Data Transmission.Wireless MEMS sensor principle of work is as Fig. 4;
Step 2: select a standard elastic chuck (the present invention is for BT40-ER-2-100L), and its central through hole is carried out to the segment reaming of installing with applicable sensor; In order to make Bluetooth signal be transferred to outside signal receiver smoothly, according to sensor power, sample frequency and signal transmission distance, have 2 Signal transmissions holes in handle of a knife centre position; Described segment reaming refers to that this hole and wireless senser base 4 match, and is generally 10-20mm;
Step 3: confirm MMA9559L 3-axis acceleration sensor, battery, checks bluetooth module and internal circuit, assembles wireless MEMS sensor, determine detection side to, and to locate with sensor localization nail in Fig. 2; The wireless MEMS sensor of band shoulder tailstock is fixed to collet endoporus place with 4 screws, and connects spring clamp, set nut, blind rivet and cutter head;
Step 4: the handle of a knife assembling sensor is preloaded onto on vertical numerical control milling machine (VWC8508 is example), gets out the computing machine of Signal reception and data processing, and the vibration threshold of spindle system vibration threshold value and cutter head cutting point is set;
Step 5: as Fig. 5 idling conditions: start milling machine idle running, the vibration amplitude of test axis system, during spindle vibrate, MEMS acceleration transducer produces the vibration mode of direct ratio by with main shaft target measuring point, mechanical oscillation signal is converted into digital telecommunication number by MEMS acceleration transducer, and send electrical signal data to MCU, and data are sent to computing machine by bluetooth and carry out measuring point and transform and process with differentiating, when the vibration amplitude of main shaft target vibration measuring point is greater than set threshold value, then computing machine meeting early warning; When the amplitude of main shaft vibration measuring point is less than or equal to set threshold value, then system initiatively forwards step 6 to;
Step 6: as Fig. 5 duty: carry out milling to machined part, MEMS acceleration transducer produces the vibration mode of direct ratio by with point of a knife milling target measuring point, mechanical oscillation signal is converted into digital telecommunication number by MEMS acceleration transducer, and send electrical signal data to MCU, and data are sent to computing machine by bluetooth and carry out measuring point and transform and process with differentiating, when the vibration amplitude of cutter head cutting point is less than or equal to setting threshold value, then normally process; When the vibration amplitude of cutter head cutting point is greater than setting threshold value, system carries out program adjustment automatically, and adjustment cutting speed, reduces the depth of cut, and carry out overproof amplitude compensation, until the vibration amplitude of cutting point is less than predetermined threshold, until this section of program completes simultaneously.
Claims (3)
1. based on a CNC milling machine vibration control system for pre-buried wireless senser, it is characterized in that: this system comprises wireless MEMS acceleration transducer (3), handle of a knife (1), computing machine; Described wireless MEMS acceleration transducer (3) is fixed on wireless senser base (4) by sensor localization nail (6); Wireless senser base (4) is fixed in the endoporus of handle of a knife (1) by gib screw (5); Described wireless MEMS acceleration transducer (3) is connected with computing machine by Bluetooth signal.
2. the CNC milling machine vibration control system based on pre-buried wireless senser according to claim 1, is characterized in that: described wireless senser base (4) is the T-shaped base of band shoulder; The interposition of described handle of a knife (1) is equipped with Signal transmissions hole (2).
3., based on a CNC milling machine vibration control method for pre-buried wireless senser, it is characterized in that: the method is realized by following steps:
(1) positioning base of MEMS sensor is processed as the T-shaped base of band shoulder, for MEMS sensor is with addition of wireless blue tooth module;
(2) central through hole of standard elastic handle of a knife is carried out the segment reaming of installing with applicable MEMS sensor; 2 Signal transmissions holes are opened in handle of a knife centre position;
(3) wireless MEMS sensor is fixed to elasticity handle of a knife endoporus place in the mode be threaded;
(4) handle of a knife assembling sensor is preloaded onto on vertical numerical control milling machine, computing machine is connected by bluetooth with MEMS sensor, and the vibration threshold of spindle system vibration threshold value and cutter head cutting point is set;
(5) start milling machine idle running, the vibration amplitude of test axis system, and the vibration amplitude of main shaft vibration measuring point and setting threshold values are contrasted;
(6) carry out milling to machined part, the vibration data recorded according to MEMS sensor adjusts the cutting speed of milling machine, the depth of cut, and carries out overproof amplitude compensation simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510769899.8A CN105425722A (en) | 2015-11-11 | 2015-11-11 | Numerical control milling machine vibration control system based on pre-embedded wireless sensor and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510769899.8A CN105425722A (en) | 2015-11-11 | 2015-11-11 | Numerical control milling machine vibration control system based on pre-embedded wireless sensor and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105425722A true CN105425722A (en) | 2016-03-23 |
Family
ID=55503993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510769899.8A Pending CN105425722A (en) | 2015-11-11 | 2015-11-11 | Numerical control milling machine vibration control system based on pre-embedded wireless sensor and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105425722A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106625024A (en) * | 2016-12-28 | 2017-05-10 | 山东大学 | Follow-up integrated intelligent monitoring system for cutting vibration |
| CN107116374A (en) * | 2017-05-11 | 2017-09-01 | 东北大学 | A kind of main shaft of numerical control machine tool handle of a knife and vibration measuring method with vibration measurement with laser function |
| CN107710910A (en) * | 2017-11-23 | 2018-02-23 | 鹿寨县众生园中药材种植专业合作社 | Agricultural hoe |
| CN109001996A (en) * | 2018-07-05 | 2018-12-14 | 南京航空航天大学 | A kind of intelligent knife handle system for tool information management |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10351347A1 (en) * | 2002-10-31 | 2004-07-08 | Grob-Werke Burkhart Grob E.K. | A method for accurately tightening a tool or workpiece to a rotating machine spindle has a ring of contact surfaces associated with pressure sensors to indicate uniformity |
| US20090234490A1 (en) * | 2008-03-17 | 2009-09-17 | Suprock Christopher A | Smart Machining System and Smart Tool Holder Therefor |
| CN103111643A (en) * | 2013-03-12 | 2013-05-22 | 哈尔滨工业大学 | Intelligent diamond cutter capable of sensing cutting state without any wire |
| CN104139322A (en) * | 2014-07-18 | 2014-11-12 | 哈尔滨工业大学 | Capacitive intelligent knife handle system for detection of four-dimensional cutting force |
-
2015
- 2015-11-11 CN CN201510769899.8A patent/CN105425722A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10351347A1 (en) * | 2002-10-31 | 2004-07-08 | Grob-Werke Burkhart Grob E.K. | A method for accurately tightening a tool or workpiece to a rotating machine spindle has a ring of contact surfaces associated with pressure sensors to indicate uniformity |
| US20090234490A1 (en) * | 2008-03-17 | 2009-09-17 | Suprock Christopher A | Smart Machining System and Smart Tool Holder Therefor |
| CN102015203A (en) * | 2008-03-17 | 2011-04-13 | 克里斯托弗·A·苏普罗克 | Smart machining system and smart tool holder therefor |
| CN103111643A (en) * | 2013-03-12 | 2013-05-22 | 哈尔滨工业大学 | Intelligent diamond cutter capable of sensing cutting state without any wire |
| CN104139322A (en) * | 2014-07-18 | 2014-11-12 | 哈尔滨工业大学 | Capacitive intelligent knife handle system for detection of four-dimensional cutting force |
Non-Patent Citations (1)
| Title |
|---|
| 刘玉香: ""切削力测量系统传感器设计"", 《中国优秀硕士论文全文库信息科技辑》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106625024A (en) * | 2016-12-28 | 2017-05-10 | 山东大学 | Follow-up integrated intelligent monitoring system for cutting vibration |
| CN107116374A (en) * | 2017-05-11 | 2017-09-01 | 东北大学 | A kind of main shaft of numerical control machine tool handle of a knife and vibration measuring method with vibration measurement with laser function |
| CN107116374B (en) * | 2017-05-11 | 2018-12-21 | 东北大学 | A kind of main shaft of numerical control machine tool knife handle and vibration measuring method with vibration measurement with laser function |
| CN107710910A (en) * | 2017-11-23 | 2018-02-23 | 鹿寨县众生园中药材种植专业合作社 | Agricultural hoe |
| CN109001996A (en) * | 2018-07-05 | 2018-12-14 | 南京航空航天大学 | A kind of intelligent knife handle system for tool information management |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103567815B (en) | Based on the test of numerical control machine tool cutting Thermal Error and the evaluation method of milling aperture | |
| CN105425722A (en) | Numerical control milling machine vibration control system based on pre-embedded wireless sensor and control method thereof | |
| CN105619177B (en) | Machine tool chief axis folder bits warning device and method based on strain pressure transducer | |
| CN105500113B (en) | Machine tool chief axis folder bits warning device and method based on non-contact displacement sensor | |
| US20200306914A1 (en) | Spindle vibration measuring system, spindle vibration measuring method, and program | |
| Bleicher et al. | In-process control with a sensory tool holder to avoid chatter | |
| CN108647413B (en) | Comprehensive prediction method for position error and stability of fine surface | |
| CN109894925A (en) | Thin-wall part Milling Process vibration monitoring method based on embedded piezoelectric transducer | |
| Kilic et al. | Stability of peripheral milling operations with long end mills | |
| CN103644960B (en) | A kind of ultrasonic vibration aided grinding processing dynamic amplitude survey tool and measuring method | |
| Umezu et al. | Machining process for a thin-walled workpiece using on-machine measurement of the workpiece compliance | |
| Sant’Anna et al. | Experimental approach for analysis of vibration sources in a gear hobbing machining process | |
| Omelchak et al. | Dynamic Processes in a Мachine-Tool at High-Speed Machining | |
| CN102416486A (en) | Control device for boring mill | |
| CN102416580A (en) | Control device for boring machine | |
| CN202388313U (en) | Control device of boring machine | |
| Kopač et al. | Dynamic instability of the hard turning process | |
| CN105921776A (en) | Method to make standard surface roughness by boring aluminum alloy | |
| Matsumura et al. | Dynamic characteristics in the cutting operations with small diameter end mills | |
| Nakandhrakumar et al. | Tool flank wear monitoring using torsional–axial vibrations in drilling | |
| Li et al. | Chatter stability in ultra-precision fly cutting considering tool wear effect | |
| Dunwoody | Automated identification of cutting force coefficients and tool dynamics on CNC machines | |
| CN220074115U (en) | Boring cutter with adjusting function for processing new energy automobile | |
| RU2344918C1 (en) | Method for determination of metal-cutting machine accuracy | |
| CN113609620B (en) | Servo dynamic stiffness identification method for feeding system of ultra-precise machine tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160323 |