CN107314849A - A kind of sensor with the small high frequency Cutting Force Signal measurement capability of three-dimensional - Google Patents

A kind of sensor with the small high frequency Cutting Force Signal measurement capability of three-dimensional Download PDF

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Publication number
CN107314849A
CN107314849A CN201710720948.8A CN201710720948A CN107314849A CN 107314849 A CN107314849 A CN 107314849A CN 201710720948 A CN201710720948 A CN 201710720948A CN 107314849 A CN107314849 A CN 107314849A
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CN
China
Prior art keywords
cutting force
sensor
main body
high frequency
upper lid
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Pending
Application number
CN201710720948.8A
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Chinese (zh)
Inventor
王延深
张钰忻
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Harbin Institute of Technology Weihai
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Harbin Institute of Technology Weihai
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Priority to CN201710720948.8A priority Critical patent/CN107314849A/en
Publication of CN107314849A publication Critical patent/CN107314849A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/0061Force sensors associated with industrial machines or actuators
    • G01L5/0076Force sensors associated with manufacturing machines

Abstract

The invention discloses a kind of sensor with the small high frequency Cutting Force Signal measurement capability of three-dimensional, constituted including force plate/platform and sensing element, the force plate/platform includes dynamometer main body and upper lid two parts, and the dynamometer main body and upper lid are respectively equipped with the sensitizing range of three-dimensional cutting force, the lower section floor installation of the dynamometer main body has clamping hole, the clamping hole facilitates the installation of device, improved by the many-side to device body, sensing element selection PVDF piezoelectric membranes are made up of material, have the advantages that high frequency response and sensitivity are high, the problem of solving low frequency response that existing resistance-type cutting dynamometer is present and poor dynamic measurement precision, so the sensor that this kind has the small high frequency Cutting Force Signal measurement capability of three-dimensional is with a wide range of applications.

Description

A kind of sensor with the small high frequency Cutting Force Signal measurement capability of three-dimensional
Technical field
It is specially that one kind has the small high frequency Cutting Force Signal measurement capability of three-dimensional the present invention relates to sensor technical field Sensor.
Background technology
Cutting force is the important parameter for describing cutting process, generation, chip formation to cutting heat, tool surface abrasion, There is substantial connection in terms of machined surface quality.The changing rule of cutting force is held, monitoring cutting force numerical value and frequency are special in real time Property be to calculate cutting power, formulate the main basis of cutting data and technological equipment, to Optimizing Cutting Conditions, improve productivity ratio, Suppression is trembled, problem etc. is significant in processing cutting processing, thus the discussion of cutting force changing rule is contributed to point Working angles are analysed, there is important guiding effect to produce reality.Dynamometer straightway testing measurement is cutting force dynamic in reflection processing The most simple and convenient and service-strong method of change.
But the existing sensor with the small high frequency Cutting Force Signal measurement capability of three-dimensional, the sensing element used is present Dynamic measurement precision is poor, and such staff is accomplished by repeated measurement, and working level is big, and cost is higher, brings Property is born, so many people's selections are abandoned, while increasing the pressure of environmental protection, the help for giving people to provide is less.
So, a kind of sensor with the small high frequency Cutting Force Signal measurement capability of three-dimensional how is designed, as us The problem of currently solving.
The content of the invention
It is an object of the invention to provide a kind of inexpensive piezoelectricity biography available for the small high frequency Cutting Force Signal measurement of three-dimensional Sensor, to solve that the intrinsic frequency that during high-speed cutting processing cutting force measurement instrument is present is low, processing technology is poor, into The problems such as this is high.
Mechanical structure in the present invention is based on strain principle of centrality and considers that each decoupling to cutting force component is set Meter, be the key of the present invention.The present invention is using PVDF piezoelectric membranes as sensing element, and being fixed in designed has Strain on the elastic sensitizing range in the mechanical structure concentrated, constitute the Cutting Force Signal sensor of the present invention.Put with reference to electric charge Real-time monitoring during big device and data collecting system, achievable high-speed cutting processing to cutting force.
The present invention is by four groups of same strain sensing units to the corresponding strain produced under the effect of three-dimensional cutting force or position The physical quantitys such as shifting are measured, and are conciliate occasionally by carrying out demarcation to measured signal, can not only be realized three-dimensional cutting force Fx, Fy and Fz accurate solution, but also can realize three-dimensional torque Mx, My and Mz are solved.The present invention can meet ultraprecise and add Work process working angles are monitored in real time, large surface quality conformance machining control, cutting with invariableness cutting force, self-adapting intelligent are processed and super The need for the engineerings such as the analysis of precision cutting mechanism, Parameters Analysis, precision cutting tool design and scientific research field.
Compared with prior art, the beneficial effects of the invention are as follows:The measurable frequency of sensor that the present invention is designed reaches 2kHz, Scope is in 0.1~200N mechanical signal, and its Measurement Resolution in terms of the small force signal less than 1N is also very high.This kind has There is the sensor of the small high frequency Cutting Force Signal measurement capability of three-dimensional, strain localization effects are realized in structure, are solved existing The problems such as low processing technology existed with piezoelectric type dynamometer of intrinsic frequency that resistance-type cutting dynamometer is present is poor.In sensing PVDF piezoelectric membranes are selected on element, dynamic measurement precision difference and piezoelectric type that existing resistance-type cutting dynamometer is present is solved The problems such as cost that dynamometer is present is high.Device body has integrated signal to handle and harvester, and three-dimensional can be achieved by decoupling Cutting force and three-dimensional cut the real-time measurement of torque, to the real-time monitoring need of working angles when can meet high-speed cutting processing well Ask, so the sensor with the small high frequency Cutting Force Signal measurement capability of three-dimensional has wide application market.
Brief description of the drawings
Fig. 1 is the force plate/platform overall schematic of the present invention;
Fig. 2 is the dynamometer main body partial structural diagram of the present invention;
Fig. 3 is the upper lid partial structural diagram of the present invention;
Fig. 4 is the sensing element partial structural diagram of the present invention;
In figure:1- dynamometer main bodys;2- body elastic thin slices;3- clamping holes;4- bases;5- sensing elements;6- connection spiral shells Bolt;Covered on 7-;8- boss;9- grooves;10- copper conductors.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made Embodiment, belongs to the scope of protection of the invention.
Fig. 1-4 are referred to, the present invention provides a kind of technical scheme:One kind has the small high frequency Cutting Force Signal measurement of three-dimensional Knot is concentrated provided with parallel strain in the sensor of ability, including dynamometer main body 1 and upper lid 7, the inside of the dynamometer main body 1 Structure, it is strained amplifies at elastic sheet 2, and the bottom of the dynamometer main body 1 includes base 4, and the base 4 is provided with clamping Hole 3, the upper lid 7 is connected with the dynamometer main body 1 by bolt 6, and the upper middle part of lid 7 is provided with boss 8, and boss 8 can use In increase measurement sensitivity, the upper top edge of lid 7 is provided with groove 9, and sensing element 5, which is pasted, invests the dynamometer main body 1 Elastic sheet 2 and the upper lid 7 groove 9 at, the right side of the sensing element 5 is provided with copper conductor 10, and the copper conductor 10 are connected with electric charge amplification, data acquisition display device, and data acquisition display device carries decoupling effect.
The elastic sensitizing range of dynamometer main body 1 utilizes parallel strain concentrating structure scheme, realizes that x, y two believes to cutting force Number measurement;The elastic sensitizing range of upper lid utilizes abrupt change of cross-section organization plan, realizes that z is measured to Cutting Force Signal.
Piezoelectric sensor 5 is fixed on each to elastic sensitizing range of main body 1 and upper lid 7, and described is each to cutting force elasticity Sensitizing range can fix four piezoelectric transducers, it is ensured that measurement accuracy and help solve it is each to torque signals.Sensing element 5 is PVDF piezoelectric film sensors, sensing element 5 pastes the elastic sheet 9 of the elastic sheet 2 and upper lid 7 that invest dynamometer main body 1 On.
Operation principle:This kind has the sensor of the small high frequency Cutting Force Signal measurement capability of three-dimensional, first by dynamometer Main body 1 is placed on suitable place, and clamping hole 3 can help it to be arranged on lathe, be conducive to the stabilization of main body 1, then by upper lid 7 It is connected by bolt 6 with main body 1, then one end of sensing element 5 is fixed on to the elastic sheet 2 of main body 1 and the groove of upper lid 7 On 9, then copper conductor 10 connected into required equipment, cutter is placed on boss 8, is easy to cutter to move, be conducive to the accurate of measurement Property, when user is to cutter applying power, upper lid is deformed with dynamometer main body under power effect, wherein each to strain sensitive Area 2 and 9 has concentrated most of strain, produces moderate finite deformation.Piezoelectric sensor 5 produces charge signal under effects of strain, warp Cross charge amplifier conversion, amplification after be changed into can collection voltages signal, by decoupling processing obtain three-dimensional cutting force Fx, Fy and Fz Signal and three-dimensional torque Mx, My and Mz signal.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding And modification, the scope of the present invention is defined by the appended.

Claims (6)

1. a kind of sensor with the small high frequency Cutting Force Signal measurement capability of three-dimensional, including dynamometer main body (1) and upper lid (7), it is characterised in that:The dynamometer main body (1) can survey x, y two by elastic sheet (2) in parallel strain concentrating structure To cutting force, the base (4) below dynamometer main body (1) provides and has opened clamping hole (3) on support, base (4), facilitates dynamometry to pass The installation of sensor.By covering (7) in bolt (6) connection above the dynamometer main body (1);It is provided with the middle part of the upper lid (7) Boss (8), and the top edge of the upper lid (7) is provided with groove (9), the elastic sheet of groove (9) can survey z to cutting force;Institute State in dynamometer main body (1) elastic sheet (9) in elastic sheet (2) and upper lid (7) and be provided with sensing element (5), the sensing The right side of element (5) is provided with copper conductor (10), and the copper conductor (10) connection charge amplifier and data acquisition display device Port.
2. a kind of sensor with the small high frequency Cutting Force Signal measurement capability of three-dimensional according to claim 1, it is special Levy and be:The dynamometer main body (1) uses parallel strain concentrating structure scheme;Upper lid (7) is using abrupt change of cross-section structure side Case.
3. a kind of sensor with the small high frequency Cutting Force Signal measurement capability of three-dimensional according to claim 1, it is special Levy and be:The boss (8) of the upper lid (7) is used to increase measurement sensitivity.
4. a kind of sensor with the small high frequency Cutting Force Signal measurement capability of three-dimensional according to claim 1, it is special Levy and be:Sensing element (5) is PVDF piezoelectric film sensors.
5. a kind of sensor with the small high frequency Cutting Force Signal measurement capability of three-dimensional according to claim 1, it is special Levy and be:Sensing element (5) is pasted on the elastic sheet (9) of the elastic sheet (2) for investing dynamometer main body (1) and upper lid (7).
6. a kind of sensor with the small high frequency Cutting Force Signal measurement capability of three-dimensional according to claim 1, it is special Levy and be:Data acquisition display device carries decoupling effect.
CN201710720948.8A 2017-08-21 2017-08-21 A kind of sensor with the small high frequency Cutting Force Signal measurement capability of three-dimensional Pending CN107314849A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112317785A (en) * 2020-11-02 2021-02-05 中北大学 Turning force measuring tool system with insert-insert fastening type sensitive structure
CN113176024A (en) * 2021-04-16 2021-07-27 西安交通大学 Non-linear split cylinder type torque sensor
CN113664562A (en) * 2021-07-27 2021-11-19 杭州电子科技大学 Ultrasonic intelligent knife handle capable of monitoring dynamic force in real time
US11566954B2 (en) 2019-12-26 2023-01-31 Industrial Technology Research Institute Force measurement device for measuring low-frequency force and high-frequency force

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CN102847961A (en) * 2012-10-15 2013-01-02 哈尔滨工业大学 Intelligent cutter of integrated small three-way cutting force measurement system
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
US20150215027A1 (en) * 2014-01-24 2015-07-30 Darron Kirby Lacey Wiring Device with Integrated Wireless Signal Extender
CN105081881A (en) * 2014-05-05 2015-11-25 天津职业技术师范大学 Device and method measuring high rotating speed/superhigh rotating speed three dimensional cutting force
CN105973512A (en) * 2016-06-22 2016-09-28 大连理工大学 self-generating electricity wireless transmission piezoelectric torque dynamometer

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Publication number Priority date Publication date Assignee Title
CN101264798A (en) * 2008-05-08 2008-09-17 上海交通大学 Three-dimensional cavity resonance pulsating pressure and aerodynamic noise inhibition device
CN101650243A (en) * 2009-07-16 2010-02-17 大连理工大学 Piezoelectric type device for measuring drilling force of deep hole
CN102267069A (en) * 2011-05-06 2011-12-07 南京航空航天大学 Test platform of three-dimensional dynamic force during super-high-rotating-speed cutting
CN102847961A (en) * 2012-10-15 2013-01-02 哈尔滨工业大学 Intelligent cutter of integrated small three-way cutting force measurement system
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Publication number Priority date Publication date Assignee Title
US11566954B2 (en) 2019-12-26 2023-01-31 Industrial Technology Research Institute Force measurement device for measuring low-frequency force and high-frequency force
CN112317785A (en) * 2020-11-02 2021-02-05 中北大学 Turning force measuring tool system with insert-insert fastening type sensitive structure
CN113176024A (en) * 2021-04-16 2021-07-27 西安交通大学 Non-linear split cylinder type torque sensor
CN113664562A (en) * 2021-07-27 2021-11-19 杭州电子科技大学 Ultrasonic intelligent knife handle capable of monitoring dynamic force in real time
CN113664562B (en) * 2021-07-27 2023-03-10 杭州电子科技大学 Ultrasonic intelligent knife handle capable of monitoring dynamic force in real time

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