CN102267069A - Test platform of three-dimensional dynamic force during super-high-rotating-speed cutting - Google Patents
Test platform of three-dimensional dynamic force during super-high-rotating-speed cutting Download PDFInfo
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- CN102267069A CN102267069A CN2011101160860A CN201110116086A CN102267069A CN 102267069 A CN102267069 A CN 102267069A CN 2011101160860 A CN2011101160860 A CN 2011101160860A CN 201110116086 A CN201110116086 A CN 201110116086A CN 102267069 A CN102267069 A CN 102267069A
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Abstract
The invention discloses a test platform of a three-dimensional dynamic force during super-high-rotating-speed cutting. The test platform comprises a structure to be cut, four resistance strain gauge groups, an integrally-molded upper surface platform, an elastic cylinder, eight elastic thick sheets, four elastic thin sheets and a supporting base, wherein the elastic cylinder is positioned on the supporting base; the eight elastic thick sheets are grouped two by two; the four elastic thin sheets are in one-to-one correspondence with four groups of elastic thick sheets; two ends of each elastic thin sheet are respectively connected with one end of each of the two elastic thick sheets in each group to form four elastic groups which are respectively positioned around the elastic cylinder; the other end of each of the two elastic thick sheets in each elastic group is respectively connected with the supporting base and the upper surface platform; the upper surface platform is arranged above the elastic cylinder and the elastic groups and connected with the elastic cylinder; the structure to be cut is arranged on the upper surface platform; and the resistance strain gauge groups are respectively fixed at middle positions of the four elastic thin sheets. The test platform can meet requirements on signal measurement of a super-high-rotating-speed cutting force, so that the three-dimensional dynamic force can be accurately measured.
Description
Technical field
The present invention relates to a kind of cutting force testing arrangement, the particularly a kind of high frequency response ultrahigh rotating speed cutting of monoblock type Three-Dimensional Dynamic power test platform with high natural frequency.
Background technology
The cutting force signal is the important state parameter in the working angles, and the detection of cutting force signal is research both at home and abroad at present and uses one of maximum working angles monitoring method.Along with the superhigh-speed cutting technology, especially based on the fast development of the ultrahigh rotating speed milling technology of high-frequency motor spindle, the cutting scholarship and moral conduct of ultrahigh rotating speed machining is more and more paid close attention to for having obtained people.Accurately obtaining of ultrahigh rotating speed cutting force signal is the infrastest guarantee condition of problems such as research superhigh-speed cutting distortion, cutting friction, is to set up the necessary key link of superhigh-speed cutting equation.But, when ultrahigh rotating speed cut, cutting force presented high frequency discontinuity, and lathe and dynamometric system are under the excitation of the high frequency interruption of cutting force, the main lower mode of system of processing mixes mutually, and measured force signal is subjected to the strong interference of structure self mode of oscillation.
Present existing cutting dynamometer, most intrinsic frequencies are within 1～5KHz, and behind mounting cutter or part, the intrinsic frequency of dynamometric system can further descend, and frequency of impact is the accurate measurement of the Milling Force signal of 0.5～3KHz in the time of can't satisfying the ultrahigh rotating speed cutting.In addition, the non-linear interference of vibration in ultrahigh rotating speed when cutting is strong, obtains that ultrahigh rotating speed cutting force signal is extremely difficult accurately, and the material deformation mechanism when this gives the cutting of research ultrahigh rotating speed, ultrahigh rotating speed cutting tribology etc. has been brought great challenge.
Based on above-mentioned analysis, cutting force high-frequency percussion the when inventor cuts at existing ultrahigh rotating speed and the non-linear interference problem of vibration attempt to propose solution, and this case produces thus.
Summary of the invention
Technical problem to be solved by this invention, be at defective in the aforementioned background art and deficiency, a kind of ultrahigh rotating speed cutting Three-Dimensional Dynamic power test platform is provided, the requirement of cutting force signal measurement when it can satisfy ultrahigh rotating speed milling, drilling and grinding, the accurate measurement of Three-Dimensional Dynamic power when realizing the ultrahigh rotating speed cutting.
The present invention is for solving above technical problem, and the technical scheme that is adopted is:
A kind of ultrahigh rotating speed cutting Three-Dimensional Dynamic power test platform, comprise structure to be cut, 4 resistance strain gage groups and integrated upper surface platform, elastic cylinder, 8 elasticity sheets, 4 elastic sheets, supporting base, wherein, elastic cylinder is positioned on the supporting base; One group in twos of 8 elasticity sheet, 4 elastic sheets are corresponding one by one with 4 groups of elasticity sheets, the two ends of described elastic sheet connect an end of two elasticity sheets in every group respectively, constitute 4 elasticity groups, and described 4 elastic components be not positioned at elastic cylinder around, the other end of two elasticity sheets connects supporting base and upper surface platform respectively in each elasticity group; Described upper surface platform is located at the top of elastic cylinder and elasticity group, and is connected with elastic cylinder; Structure to be cut is located on the upper surface platform; 4 resistance strain gage groups are fixed in the centre position of 4 elastic sheets respectively.
Above-mentioned elastic cylinder is positioned at the center of supporting base, and is the four-prism structure.
Above-mentioned structure to be cut and upper surface platform are formed in one or mechanical connection.
The rigidity ratio of above-mentioned elastic sheet, elasticity sheet, elastic cylinder is 1:5～30:30～100.
After adopting such scheme, the present invention is by each member of optimizing distribution, and compares with existing structure to have the following advantages:
(1) the present invention has high intrinsic frequency.The most intrinsic frequencies of existing dynamometry product are within 1～5KHz, and behind mounting cutter or workpiece, the intrinsic frequency of dynamometric system can further descend.In addition, some piezoelectric type load-sensing unit intrinsic frequency is up to 90KHz, but behind configuration frock and clamping workpiece, whole dynamometric system intrinsic frequency only can reach 5～6KHz.The present invention adopts and collects workpiece, load-sensing unit in unitary whole formula structure, and intrinsic frequency can be stabilized in 6～10KHz, can satisfy the requirement of ultrahigh rotating speed cutting force-measuring fully;
(2) the present invention has lower cost.The existing commercialization dynamometry product prevailing price costliness that can satisfy the machining test, price does not wait between the hundreds of thousands unit at several ten thousand yuan.Cost of the present invention only comprises machined material expense, processing charges, resistance strain gage group expense etc., and cost is in thousand yuan.
(3) the present invention except that can satisfying the ultrahigh rotating speed milling, also can satisfy cutting force test requests such as ultrahigh rotating speed drilling, ultrahigh rotating speed grinding by changing physical dimension to be cut;
(4) the present invention is simple in structure, reliable operation, top structure to be cut can be made split type, thereby reuse.
Description of drawings
Fig. 1 is a perspective view of the present invention.
The specific embodiment
Below with reference to accompanying drawing the structure of the present invention and the course of work are elaborated.
As shown in Figure 1, the invention provides a kind of ultrahigh rotating speed cutting Three-Dimensional Dynamic power test platform, it is a kind of by the block blank of machined material monolithic construction that directly process and that post the resistance strain gage group, comprise structure 1 to be cut, upper surface platform 2, elastic cylinder 3, elasticity sheet 4, elastic sheet 5, resistance strain gage group 6 and supporting base 7, wherein, supporting base 7 is positioned at bottommost, plays a supporting role; Elastic cylinder 3 is positioned on the base for supporting 7, and in the present embodiment, elastic cylinder 3 is positioned at the center of base for supporting 7, and considers processing cost, adopts the four-prism structure; Elasticity sheet 4 is designed to 8, wherein, two elasticity sheets 4 are made as one group, lay respectively at elastic cylinder 3 around, and elastic sheet 5 is designed to 4, match with 4 groups of elasticity sheets 4 respectively, also lay respectively at elastic cylinder 3 around, wherein, in every group of elasticity sheet 4, the end of one of them is connected with supporting base 7, and the other end is connected with an end of elastic sheet 5, and the other end of this elastic sheet 5 connects an end of another elasticity sheet 4, and the other end of this another elasticity sheet 4 then connects the upper surface platform 2 of top; Upper surface platform 2 is positioned at the top of elastic cylinder 3, elasticity sheet 4, and is connected with elastic cylinder 3, thereby makes elastic cylinder 3, elasticity sheet 4 connect indirectly; Structure 1 to be cut is a strip, is located on the upper surface platform 2, and it can be one-body molded with other structure, also can be designed as split typely, is fixed on the upper surface platform 2 by mechanical connecting mode; Resistance strain gage group 6 is designed to 4 groups, and is identical with the number of elastic sheet 5, and is fixed in the centre position of each elastic sheet 5 correspondingly.
Need to prove that the rigidity ratio of aforementioned elastic sheet 5, elasticity sheet 4, elastic cylinder 3 is 1:5～30:30～100, rigidity herein mainly comprises tension and compression rigidity, shearing rigidity, torsional rigidity and bending rigidity.
During real work, utilize supporting base 7 that the present invention is fixed on the ultrahigh speed machining center workbench, when carrying out the ultrahigh rotating speed machining, cutter is cut structure 1 to be cut, the strain signal that produces by tension, pressure or the twisting action of measuring 4 groups of resistance strain gage groups 6 output, and, obtain accurate three-dimensional cutting force (Fx by measuring system with data converting function, Fy, Fz) signal.
In sum, a kind of ultrahigh rotating speed cutting of the present invention Three-Dimensional Dynamic power test platform, focus on the elastic cylinder 3, elasticity sheet 4 and the elastic sheet 5 that utilize the one-body molded rigidity of block blank different, when stressed, have different strain responses like this, by the rigidity ratio of elasticity sheet 4 and elastic sheet 5 is set, and adjust arranging of resistance strain gage group 6 on the elastic sheet 5, thereby realize the accurate measurement of ultrahigh rotating speed cutting Three-Dimensional Dynamic cutting force.
Above embodiment only for explanation technological thought of the present invention, can not limit protection scope of the present invention with this, every technological thought that proposes according to the present invention, and any change of being done on the technical scheme basis all falls within the protection domain of the present invention.
Claims (4)
1. a ultrahigh rotating speed cuts Three-Dimensional Dynamic power test platform, it is characterized in that: comprise structure to be cut, 4 resistance strain gage groups and integrated upper surface platform, elastic cylinder, 8 elasticity sheets, 4 elastic sheets, supporting base, wherein, elastic cylinder is positioned on the supporting base; One group in twos of 8 elasticity sheet, 4 elastic sheets are corresponding one by one with 4 groups of elasticity sheets, the two ends of described elastic sheet connect an end of two elasticity sheets in every group respectively, constitute 4 elasticity groups, and described 4 elastic components be not positioned at elastic cylinder around, the other end of two elasticity sheets connects supporting base and upper surface platform respectively in each elasticity group; Described upper surface platform is located at the top of elastic cylinder and elasticity group, and is connected with elastic cylinder; Structure to be cut is located on the upper surface platform; 4 resistance strain gage groups are fixed in the centre position of 4 elastic sheets respectively.
2. ultrahigh rotating speed cutting Three-Dimensional Dynamic power test platform as claimed in claim 1, it is characterized in that: described elastic cylinder is positioned at the center of supporting base, and is the four-prism structure.
3. ultrahigh rotating speed cutting Three-Dimensional Dynamic power test platform as claimed in claim 1, it is characterized in that: described structure to be cut and upper surface platform are formed in one or mechanical connection.
4. ultrahigh rotating speed cutting Three-Dimensional Dynamic power test platform as claimed in claim 1, it is characterized in that: the rigidity ratio of described elastic sheet, elasticity sheet, elastic cylinder is 1:5～30:30～100.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101160860A CN102267069A (en) | 2011-05-06 | 2011-05-06 | Test platform of three-dimensional dynamic force during super-high-rotating-speed cutting |
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| CN2011101160860A CN102267069A (en) | 2011-05-06 | 2011-05-06 | Test platform of three-dimensional dynamic force during super-high-rotating-speed cutting |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102490085A (en) * | 2011-12-09 | 2012-06-13 | 华东理工大学 | Device for simultaneously measuring turning force in three directions |
| CN103921174A (en) * | 2014-04-17 | 2014-07-16 | 西安交通大学 | Strain type high-frequency response fixing type four-component milling force sensor |
| CN104215380A (en) * | 2014-09-12 | 2014-12-17 | 广西师范大学 | Force measuring device for precisely measuring three-dimensional dynamic forces externally applied to fixed force body |
| CN105215691A (en) * | 2015-10-20 | 2016-01-06 | 江苏科技大学 | A kind of high-precision high-speed micro-cutting Three-Dimensional Dynamic Force meansurement platform |
| CN105784250A (en) * | 2016-04-20 | 2016-07-20 | 电子科技大学 | Three-dimensional dynamic grinding force detection apparatus and decoupling algorithm thereof |
| CN107314849A (en) * | 2017-08-21 | 2017-11-03 | 哈尔滨工业大学（威海） | A kind of sensor with the small high frequency Cutting Force Signal measurement capability of three-dimensional |
| CN111941103A (en) * | 2020-08-19 | 2020-11-17 | 山东理工大学 | Tandem type bidirectional constant machining force adjusting platform for cutting machining |
| CN111993097A (en) * | 2020-08-18 | 2020-11-27 | 山东理工大学 | Plane constant force machining adjusting platform for cutting machining |
| CN111993095A (en) * | 2020-08-26 | 2020-11-27 | 山东理工大学 | Bidirectional machining force adjusting platform for cutting machining |
| CN112045494A (en) * | 2020-08-19 | 2020-12-08 | 山东理工大学 | Bidirectional machining force measuring and compensating device for cutting machining |
| CN114178906A (en) * | 2021-12-30 | 2022-03-15 | 北京石墨烯技术研究院有限公司 | Cutting force measuring device |
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| CN201548356U (en) * | 2009-12-10 | 2010-08-11 | 中国直升机设计研究所 | Column type three-dimensional force transducer |
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| US5211060A (en) * | 1992-01-21 | 1993-05-18 | Eastman Kodak Company | Bidirectional force sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102490085A (en) * | 2011-12-09 | 2012-06-13 | 华东理工大学 | Device for simultaneously measuring turning force in three directions |
| CN102490085B (en) * | 2011-12-09 | 2014-02-19 | 华东理工大学 | Device for simultaneously measuring turning force in three directions |
| CN103921174A (en) * | 2014-04-17 | 2014-07-16 | 西安交通大学 | Strain type high-frequency response fixing type four-component milling force sensor |
| CN103921174B (en) * | 2014-04-17 | 2016-05-25 | 西安交通大学 | The fixed four component Milling Force sensors of a kind of strain-type high frequency sound |
| CN104215380A (en) * | 2014-09-12 | 2014-12-17 | 广西师范大学 | Force measuring device for precisely measuring three-dimensional dynamic forces externally applied to fixed force body |
| CN104215380B (en) * | 2014-09-12 | 2016-06-08 | 广西师范大学 | The fixing beaer of a kind of accurate test bears the device for measuring force of externally applied Three-Dimensional Dynamic power |
| CN105215691A (en) * | 2015-10-20 | 2016-01-06 | 江苏科技大学 | A kind of high-precision high-speed micro-cutting Three-Dimensional Dynamic Force meansurement platform |
| CN105784250A (en) * | 2016-04-20 | 2016-07-20 | 电子科技大学 | Three-dimensional dynamic grinding force detection apparatus and decoupling algorithm thereof |
| CN107314849A (en) * | 2017-08-21 | 2017-11-03 | 哈尔滨工业大学（威海） | A kind of sensor with the small high frequency Cutting Force Signal measurement capability of three-dimensional |
| CN111993097A (en) * | 2020-08-18 | 2020-11-27 | 山东理工大学 | Plane constant force machining adjusting platform for cutting machining |
| CN111993097B (en) * | 2020-08-18 | 2022-04-29 | 山东理工大学 | Plane constant force machining adjusting platform for cutting machining |
| CN111941103A (en) * | 2020-08-19 | 2020-11-17 | 山东理工大学 | Tandem type bidirectional constant machining force adjusting platform for cutting machining |
| CN112045494A (en) * | 2020-08-19 | 2020-12-08 | 山东理工大学 | Bidirectional machining force measuring and compensating device for cutting machining |
| CN111993095A (en) * | 2020-08-26 | 2020-11-27 | 山东理工大学 | Bidirectional machining force adjusting platform for cutting machining |
| CN114178906A (en) * | 2021-12-30 | 2022-03-15 | 北京石墨烯技术研究院有限公司 | Cutting force measuring device |
| CN114178906B (en) * | 2021-12-30 | 2022-11-29 | 北京石墨烯技术研究院有限公司 | Cutting force measuring device |
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Application publication date: 20111207 |