CN1011496B - Shank type of tridimensional dynameter using piezoelectric quartz for lathe turning - Google Patents
Shank type of tridimensional dynameter using piezoelectric quartz for lathe turningInfo
- Publication number
- CN1011496B CN1011496B CN 87106317 CN87106317A CN1011496B CN 1011496 B CN1011496 B CN 1011496B CN 87106317 CN87106317 CN 87106317 CN 87106317 A CN87106317 A CN 87106317A CN 1011496 B CN1011496 B CN 1011496B
- Authority
- CN
- China
- Prior art keywords
- sensing element
- dynamometer
- cutting
- force
- piezoelectric quartz
- 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.)
- Expired
Links
- 239000010453 quartz Substances 0.000 title claims abstract description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 238000005520 cutting process Methods 0.000 claims abstract description 20
- 229910052751 metal Inorganic materials 0.000 claims abstract description 3
- 239000002184 metal Substances 0.000 claims abstract description 3
- 229910052755 nonmetal Inorganic materials 0.000 claims abstract description 3
- 235000012431 wafers Nutrition 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 5
- 230000003068 static effect Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000000565 sealant Substances 0.000 description 3
- 210000004907 gland Anatomy 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Images
Landscapes
- Force Measurement Appropriate To Specific Purposes (AREA)
- Machine Tool Sensing Apparatuses (AREA)
Abstract
The present invention belongs to an instrument for measuring the cutting force in the cutting of metal and nonmetal. The present invention is characterized in that a dynamometer is in the structure of a cutter holder with the advantages of small volume, light weight and large rigidity, and an elastic ring with a sensing element is arranged on the front part of the cutter holder; a three-dimension piezoelectric quartz force sensing element is used for replacing a plurality of piezoelectric quartz force sensors with high price; the force sensing element is directly arranged in the body of the dynamometer and is pre-fastened through interference. The present invention is a portable high-performance piezoelectric quartz dynamic turning dynamometer, and is suitable for the online measurement of dynamic, instantaneous and static cutting force.
Description
The present invention is the instrument that belongs to the cutting force when measuring metal and nonmetal cutting.
Though existing piezoelectric type cutting dynamometer dynamic property improves a lot than other type dynamometer, but most structures are complicated, volume is bigger, the piezoelectric force transducer quantity that needs is more, and (for example the 9257A of Switzerland Kistler company force plate/platform will be with 4 three-way piezoelectrics quartz power sensors, the 9263A turning dynamometer needs 3 two-way 3 unidirectional totally 6 piezoelectric quartz force sensors), and this sensor process complexity, the specification requirement height, be difficult to make, cost is very high, and (as 86 years prices of 9257A dynamometric system is 21590 dollars so the dynamometer cost that makes with such sensor is also very high, amounted to 60450 yuan of RMB at that time).Because most dynamometer quality are bigger, have than big difference with actual cutting tool state, will cause dynamic measurement error.In addition, though the dynamometer that adopts knife bar formula structure, its rigidity and intrinsic frequency lower (as EP-0203490(A) are arranged); Though the dynamometer structure that also has is simple and direct, not energy measurement three-dimensional power (as JP-60-108255(A)).Owing to above reason, present dynamometer is many to be used in the laboratory, is difficult to be applied in the actual production.
The objective of the invention is to develop the piezoelectric type turning dynamometer that a kind of volume is little, in light weight, structure is simple and direct, dynamic property is good.Whole dynamometer such as same the normal cylindrical lathe tool, only form by elastic cutter bar and the quartzy force sensing element of three-way piezoelectric of a high rigidity, make that dynamometer is static all to improve a lot with dynamic property, reach the international production engineering of international CIRP-TSCC(research association-cutting committee) " dynamically type cutting dynamometer " standard of regulation.In addition, because simple in structure, save many expensive piezoelectric force transducers, so this dynamometer cost also can reduce greatly.It is suitable for the dynamic and instantaneous cutting force of online accurate measurement, also the static cutting force of energy measurement.
Concrete implementation step method of the present invention and technology
Basic comprising of the present invention is the knife bar formula structure that has two symmetrical elasticity semi-rings and elongated slot in the middle of (1) dynamometer body adopts.The quartzy force sensing element of three-way piezoelectric is clamped in the elongated slot by the elasticity semi-ring.When cutting force acts on the point of a knife, just pass through elasticity semi-ring and two plane effects of elongated slot on force sensing element, through force sensing element power is decomposed into F automatically again
x, F
y, F
zThree direction outputs.The key of dynamometer body structure design is the geometric parameter (external diameter R, internal diameter r, thickness H) of choose reasonable elasticity semi-ring, to guarantee enough rigidity, accuracy that each transmits to power and higher power-photoelectric transformation efficiency.(2) replaced general piezoelectric quartz force sensor with the quartzy force sensing element of three-way piezoelectric, and this force sensing element has directly been packed in the dynamometer body.Force sensing element is made according to quartzy direct piezoelectric effect principle, and it is made up of 6 different cut type quartz wafers, wherein measures F
x, F
zCutting force be the wafer of using a pair of YO ° cut type respectively, measure F
yCutting force is with a pair of XO ° of cut type wafer, in the dynamometer body elongated slot of packing into behind 6 stack gummeds, obtains the pretightning force of about 1500kgf for making force sensing element, and the elongated slot width is generally got 0.4～0.7mm with respect to the magnitude of interference of force sensing element thickness direction.(3) force sensing element is packed into behind the dynamometer body, be by each to laterally disturbing a minimum principle (general≤± 5%), and accurately debug the position to sensing element in elongated slot, till horizontal interference and linearity reach requirement.
Technical performance of the present invention and effect:
Behind static and dynamic calibration, this dynamometer has reached CIRP-TSCC " dynamically type " cutting dynamometer standard.The specific performance index: range is respectively to being ± 200kgf charge sensitivity F
x, F
y, F
zEach is to being respectively 30,22,37pC/kgf, non-linear each to all＜＜± 1%(FS), lag behind with repeatability all＜1%(FS) each to horizontal interference＜± 5%(FS), F
x, F
y, F
zEach is respectively 8KH to intrinsic frequency
z, 16KH
z, 10KH
z, each is to insulaion resistance＞10
13Ω.
Dynamic force when this dynamometer can be used to measure turning, transient force and static force also can be used as on-Line Monitor Device or adaptive control system feedback element.
Description of drawings:
Accompanying drawing-a is clamped in three-dimensional force sensing element (12) in the elongated slot by means of the elasticity semi-ring in dynamometer body (1), F in the three-dimensional force sensing element (12)
x, F
y, F
zThree electrodes are by outside lead (4) lead body, and (12) seal and protection with fluid sealant (3), polytetrafluoroethylplastic plastic sheet (10) and cover plate (5) and (9), and screw (2) is that fixing cord is used.The dynamometer front portion is common machine clip variable-position cutter head, and screw (6) is pressed on blade (8) on edge bearing (11) and the cutter hub (1) by pressing plate (7).
The quartz wafer (14) of the different cut types of accompanying drawing-d folds up electrode (15) and (16) therebetween, (15) concurrent ground connection, and (16) are for drawing F
x, F
y, F
zElectrode, (14) (15) (16) are bonded to one with conducting resinl.
Accompanying drawing is a shank type of tridimensional dynameter using piezoelectric quartz for lathe turning, and symbol description is as follows among the figure:
Figure-a
(1) dynamometer body, (2) screw, (3) fluid sealant, (4) lead, (5) cover plate, (6) screw, (7) pressing plate, (8) blade, (9) cover plate, (10) polytetrafluoroethylplastic plastic sheet; Figure-b(11) edge bearing, (12) three-dimensional force sensing element.
Figure-d
(14) quartz wafer, (15) electrode, (16) electrode.
Most preferred embodiment:
Shown in accompanying drawing-a, dynamometer body (1) material is 40C
r, roughing is after modifier treatment, R=18mm, and r=8mm, H=32mm, L=32mm, two semi-rings will be with the strict symmetry of knife bar axis.Elongated slot two side plane nonparallelism must not surpass 0.003 μ m, its surface roughness
10More than, the non-perpendicularity of both and knife bar installation base surface A is not more than 0.02mm.(2) the quartz wafer diameter of piezoelectric forces photosensitive elements is that φ 16mm thickness is 1mm, 4 of YO ° of cut types, 2 of XO ° cut types, form 3 pairs of wafer set altogether, every pair of polarity is staggered relatively, silver soldering plate electrode on the therebetween, its compound mode is shown in accompanying drawing-d, and each organizes the peak response direction of wafer by shown in this figure left side arrow.With 100～200kgf pressure wafer and electrode are pressed together by conducting resinl and to constitute quartz and stack force sensing element.(3) on tensile and compression testing machine with the knife bar elongated slot with 1500～2000kgf strength draw back with force sensing element put into groove and with the periphery teflon plate accurately adjust its position, draw lead, use gland (5), (9) and 704 fluid sealants that quartz is stacked positiver sealing at last, use laser weld between gland and the dynamometer body.(4) to adopt 16mm * 16mm standard cemented carbide indexable insert, the geometric angle of cutter groove be γ=-8 ° to the dynamometer cutting portion, α=6 °,
r=60 °, λ=-5 °.
Claims (2)
1, a kind of measure when belonging to metal and nonmetal cutting the cutting force instrument, by the shank type of tridimensional dynameter using piezoelectric quartz for lathe turning that dynamometer body [1], sensing element [12] and cutting tip pressing plate [7], blade [8], edge bearing [11] are formed, it is characterized in that: described dynamometer body [1] is to adopt the centre to have the knife bar formula structure of two symmetrical elasticity semi-rings and elongated slot; Piezoelectric quartz three-dimensional force sensing element [12] is directly packed in the groove of elastic ring, makes its pretension with the magnitude of interference.
2, turning dynamometer according to claim 1, its feature also be wherein three-dimensional force sensing element (12) be by 6 bauerite wafers wherein 2 be XO ° of cut type, 4 be the three-dimensional force sensing element (12) of YO ° of cut type composition, and according to F
x, F
y, F
zIn the groove of the consistent elastic ring of packing into of cutting direction, pretightning force is 1000～2000kgf.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87106317 CN1011496B (en) | 1987-09-15 | 1987-09-15 | Shank type of tridimensional dynameter using piezoelectric quartz for lathe turning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87106317 CN1011496B (en) | 1987-09-15 | 1987-09-15 | Shank type of tridimensional dynameter using piezoelectric quartz for lathe turning |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1032395A CN1032395A (en) | 1989-04-12 |
| CN1011496B true CN1011496B (en) | 1991-02-06 |
Family
ID=4815652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87106317 Expired CN1011496B (en) | 1987-09-15 | 1987-09-15 | Shank type of tridimensional dynameter using piezoelectric quartz for lathe turning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1011496B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103551922B (en) * | 2013-10-10 | 2017-01-18 | 西安交通大学 | Strain gauge integrated three-dimensional turning force sensor |
| CN103551924B (en) * | 2013-11-10 | 2016-06-22 | 吉林大学 | Three-dimensional cutting force measurement device |
| CN103743502B (en) * | 2013-12-11 | 2016-04-13 | 西安交通大学 | A kind of pressure resistance type rotates two component Milling Force sensors |
| CN103894883B (en) * | 2014-04-01 | 2016-08-17 | 西北工业大学 | Cutter distortion measured material and utilize this fixture to carry out cutter distortion On-line Measuring Method |
| CN104015098B (en) * | 2014-04-29 | 2016-08-03 | 天津大学 | The real-time monitoring device of knife bar vibration signal and monitoring method thereof in machining |
| CN104175178B (en) * | 2014-07-15 | 2016-08-24 | 株洲钻石切削刀具股份有限公司 | A kind of method of quantitative measurement drilling cutters cutting force |
| CN106736857B (en) * | 2016-11-30 | 2019-04-05 | 太原科技大学 | The gradient piezoelectric ceramics intelligence cutting tool unit that cutting force self is known |
| CN106584210B (en) * | 2017-02-06 | 2018-08-24 | 广东工业大学 | A kind of smart tooling system for precision cutting |
| CN107192488B (en) * | 2017-06-15 | 2019-04-09 | 西安交通大学 | A kind of broadband cutting force measurement device |
| CN109489886B (en) * | 2018-11-07 | 2020-07-31 | 华中农业大学 | Cutter roller three-directional force measuring device and method for rotary tillage soil box test bed |
| CN113976933B (en) * | 2021-12-28 | 2022-03-29 | 中北大学 | Turning force measuring tool system with internal inserting type sensitive structure |
-
1987
- 1987-09-15 CN CN 87106317 patent/CN1011496B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1032395A (en) | 1989-04-12 |
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