CN107999847A - The visual experimental apparatus and method of cutting stress ripple in a kind of vertical knee-type milling machine - Google Patents
The visual experimental apparatus and method of cutting stress ripple in a kind of vertical knee-type milling machine Download PDFInfo
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- CN107999847A CN107999847A CN201711342655.7A CN201711342655A CN107999847A CN 107999847 A CN107999847 A CN 107999847A CN 201711342655 A CN201711342655 A CN 201711342655A CN 107999847 A CN107999847 A CN 107999847A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C9/00—Details or accessories so far as specially adapted to milling machines or cutter
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/24—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves
- B23Q17/2409—Arrangements for indirect observation of the working space using image recording means, e.g. a camera
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Abstract
The visual experimental apparatus and method of cutting stress ripple in a kind of vertical knee-type milling machine of the present invention, including optical system, clamping body, workpieces processing and vertical knee-type milling machine；Optical system includes speculum, horizontally disposed light source, and ground glass, polarizer, analyzer and the high-speed camera being vertically coaxially disposed from the bottom up successively；Vertical knee-type milling machine main shaft is vertical with workpieces processing, and is fed along workpieces processing in-plane；Workpieces processing is fixed on clamping body upper end, and ground glass and polarizer are arranged on clamping body；Speculum is placed in below ground glass, and is arranged in the horizontal optical path of light source to be formed and is turned to light path, after steering light path irradiates ground glass, polarizer and workpieces processing successively, is gathered through analyzer by high-speed camera.The present invention uses the speculum of adjustable angle so that the arrangement of light path system is realized and material internal stress wave propagation is observed under high-speed cutting state without arranging successively along vertical knee-type milling machine major axes orientation.
Description
Technical field
The present invention relates to the High-speed machining in mechanical engineering, the visualization of cutting stress ripple specially in a kind of vertical knee-type milling machine
Experimental provision and method.
Background technology
Improving the approach of machining efficiency mainly includes the design of optimization Cutting Process and improves two sides of speed of cutting
Face.For Cutting Process optimization more achievement existing at present, but its further to lift the space of processing efficiency smaller.Therefore
Cutting speed is improved, realizes that high-speed cutting just becomes an emphasis of lifting processing efficiency research at present.In addition, using at a high speed
During cutting technology, cutting force is smaller, and chip can take away substantial amounts of cutting heat, and heat-mechanical condition of cutter and machined surface delays
With cutter life and workpiece surface quality are significantly improved.
Although High-speed Machining Technology has obtained a degree of practical application, chip formation mechanism is cut off to it at present and is recognized
Knowledge remains in the experience conclusion stage based on static mechanical, this undoubtedly can seriously hinder the further development of High-speed Machining Technology
And application.Traditional shearing slip is theoretical be based on static analytical methods, obtained in slow cutting Machining Analysis extensively with
Effective application, but its be built upon that material character is constant and static analysis on the basis of, this is allowed for when cutting speed is big
After width improves, caused phenomenon in working angles can not be effectively explained：As cutting force reduces, chip is serrating etc..
In fact, with the raising of cutting speed, the regional area strain rate of material tends to reach 106/ s, at this
Since the attribute such as strain rate effect possessed by material, the yield limit of material can produce larger change under kind state；In addition,
So that the development speed of knife-bits zone of action is greatly speeded up, the material infinitesimal inertia effect is more notable for the raising of cutting speed,
The change of material is just as there is very big difference under this state under static(al) state.Therefore need to use kinetic theory, consider high-speed cutting
Effects of stress wave to analyze and research to its mechanism.
At present, measure the method propagated material planted agent Reeb and be broadly divided into resistance-strain method and dynamic photoelasticity.Before
Person is measured and is recorded the stress variation situation of target point using dynamic strain indicator by placing foil gauge in target location,
And then the propagation of whole target area planted agent Reeb is derived, this measuring method implements complex, and can not intuitively obtain
Stress wave propagation state in whole region；It is inclined by projection-type and the latter then utilizes the synthetic birefringence effect of certain material
Polarized-light optical system, is converted into optical fringe by the stress state of material and is acquired, for stress wave Study on Problems.
In practical study and experiment, due to vertical knee-type milling machine main axle structure be arranged in workpieces processing cutting position it is same perpendicular
In straight line, allowing for incident ray can only enter below workpieces processing, and since the limitation of main shaft Z-direction stroke, light source are difficult
With in workpiece arranged just beneath, so as to seriously limit the requirement that optical system structure is coaxially arranged so that current equipment is difficult
For the observation and visualization of the stress wave propagation in vertical knee-type milling machine milling process.
The content of the invention
For problems of the prior art, the visualization that the present invention provides cutting stress ripple in a kind of vertical knee-type milling machine is real
Experiment device and method, simple in structure, design is reasonable, easy to operate, can effectively solve the problem that photoelasticity interference fringe gathers the time
The arrangement problem of system.
The present invention is to be achieved through the following technical solutions：
The visual experimental apparatus of cutting stress ripple in a kind of vertical knee-type milling machine, including optical system, mounting and clamping system and milling
System；
The optical system includes speculum, horizontally disposed light source, and vertically coaxial from the bottom up successively
Ground glass, polarizer, analyzer and the high-speed camera of setting；Analyzer is arranged on high-speed camera camera lens front end；
The milling system includes workpieces processing and vertical knee-type milling machine；Workpieces processing uses saturating with synthetic birefringence characteristic
Mingguang City's elastic material is made；Vertical knee-type milling machine main shaft is vertical with workpieces processing, and is fed along workpieces processing in-plane；
The mounting and clamping system includes clamping body；Workpieces processing is fixed on clamping body upper end, and ground glass and polarizer are set
On clamping body；
Speculum is placed in below ground glass, and is arranged to be formed in the horizontal optical path of light source and is turned to light path, turns to light path
After irradiating ground glass, polarizer and workpieces processing successively, gathered through analyzer by high-speed camera.
Preferably, workpieces processing is separately fixed at clamping body upper end by briquetting in both direction.
Preferably, ground glass is fixedly plugged on clamping body in fluting, and polarizer is by polarizer adjustment block with screw thread
The form of connection is fixed on clamping body；Polarizer adjustment block is used for polarizer along polarizer adjustment block is axial and polarizer axis
Rotational positioning to both direction.
Preferably, the clamping body includes the rectangular right angle riser of horizontal direction；Right angle riser top is to outside right angle
Horizontal direction extends to form installation top plate, and bottom horizontal direction to outside right angle extends to form fixed bottom plate, the right angle of right angle riser
Inner side sets the clamping slot for being used for clamping fixation ground glass and the threaded hole for being threadedly coupled polarizer adjustment block；Stand at right angle
Direction of feed of the inner side of plate close to vertical knee-type milling machine；Workpieces processing is fixed by installing top plate in both direction, and right angle riser leads to
Fixed bottom plate is crossed to be fixed on the workbench of vertical knee-type milling machine；Speculum is placed on the inside of right angle riser, and lower end is by moving horizontally
The spacing fixation of speculum horizontal adjustment cushion block.
Further, install and be respectively arranged with installation through-hole along both direction on top plate, fixation is provided with fixed bottom plate
Groove, installs and is fixed with the reinforcing rib being connected on the outside of right angle riser between top plate and fixed bottom plate.
Further, clamping slot is at right angles fixedly installed along right angle on the inside of right angle riser.
A kind of visualized experiment method of cutting stress ripple in vertical knee-type milling machine, based on any of the above-described visual experimental apparatus,
Include the following steps,
Step 1, light source levels are placed on the workbench of vertical knee-type milling machine, adjust the angle of speculum, make incident light complete
Cover the region of required observation in workpieces processing；
Step 2, high-speed camera adjusts its lens focus and pendulum off normal is put, adjust high-speed camera ginseng in vertical direction
Number so that its picture dimension that can be caught is fully contemplated by the scope that the inner stress of work ripple to be observed is propagated；
Step 3, rotation is installed on the analyzer before camera lens so that the polarised light after analyzer is light field；
Step 4, vertical knee-type milling machine is run, aim at tool operation is carried out, corresponding cutting parameter is set, climb cutting is carried out to workpieces processing
Cutting experiment, high-speed camera sampling button is triggered when cutter will be cut, and stress wave is in plate in record working angles
Communication process.
Preferably, light source is using no stroboscopic LED white lights.
Preferably, further included in step 1, the adjustment polarizer step parallel with analyzer.
Preferably, high-speed camera parameter includes sample frequency, resolution ratio and time for exposure.
Compared with prior art, the present invention has technique effect beneficial below：
The present invention uses the speculum of adjustable angle so that the arrangement of light path system need not be along vertical knee-type milling machine main shaft square
To arranging successively, the clamping height of workpiece is effectively reduced, gathers the color-bar on elastooptic mateiral surface during high-speed milling
Line evolution picture, realizes and material internal stress wave propagation is observed under high-speed cutting state, so as to obtain in workpieces processing
The spread state of stress wave, in favor of carrying out analysis and research to high speed machining mechanism, can further investigate high-speed cutting
Stress wave propagation, reflection and superposed process in journey.
Further, photoelastic material is fixed by using adjustable double briquette forms, is not reducing observable region area
On the premise of, the vibration of workpiece in working angles is effectively reduced, the image caused by vibration is avoided and obscures.
Brief description of the drawings
Fig. 1 arranges schematic diagram for present system.
Fig. 2 is the installation diagram of mounting and clamping system of the present invention.
Fig. 3 a are the front view of clamping body of the present invention.
Fig. 3 b are the top view of clamping body of the present invention.
Fig. 3 c are the sectional view along A-A of clamping body of the present invention.
Fig. 4 is point using the stress wave propagation under the conditions of high-speed cutting of the PMMA plates taken by this visualization device
Cloth striped.
In figure：1st, light source, 2, speculum, 3, ground glass, 4, polarizer, 5, workpieces processing, 6, vertical knee-type milling machine, 7, analyzing
Mirror, 8, high-speed camera, 9, clamping body, 10, briquetting, 11, polarizer adjustment block, 12, speculum horizontal adjustment cushion block.
Embodiment
With reference to specific embodiment, the present invention is described in further detail, it is described be explanation of the invention and
It is not to limit.
A kind of visual experimental apparatus of vertical knee-type milling machine cutting stress ripple of the present invention, it includes, optical system, mounting and clamping system
And milling system；Optical system is used for realizing the striped that workpieces processing internal stress is shown as to colour；Milling system be used for pair plus
Work workpiece carries out high-speed milling；Mounting and clamping system is used for fixing workpieces processing and opticator element progress clamping.Also match somebody with somebody
High-speed camera is equipped with, record is acquired to the stress wave propagation image in working angles workpieces processing.
Optical system includes light source 1, speculum 2, ground glass 3, polarizer 4 and analyzer 7, by these optics
The light path of composition is distributed in milling system into approximate 90 °.Mounting and clamping system includes clamping body 9, briquetting 10, polarizer adjustment block 11
And speculum horizontal adjustment cushion block 12.Milling system includes workpieces processing 5 and vertical knee-type milling machine 6.Workpieces processing 5, which uses, to be had
The transparent elastooptic mateiral of synthetic birefringence characteristic.Wherein, workpieces processing 5 and speculum 2, ground glass in optical system
3rd, polarizer 4 is installed on mounting and clamping system, and workpieces processing 5 is fixed by briquetting, by varying speculum horizontal adjustment cushion block 12
To adjust 2 position of speculum.
The present invention overcomes with 5 cutting position of workpieces processing be arranged in same vertical curve due to 6 main axle structure of vertical knee-type milling machine
It is interior, caused by incident ray can only be entered by the lower section of workpieces processing 5, and main shaft Z-direction stroke limiting, light source are difficult in workpiece just
The problem of arranged beneath, while also achieve the adjusting to light path.So that light source can be horizontally placed at vertical knee-type milling machine work
To overcome the limitation that 6 structure of vertical knee-type milling machine is arranged on platform, and realize the adjusting to light path.
Based on photoelasticity principle, as shown in Figure 1, by light source 1, speculum 2,7 structure of ground glass 3, polarizer 4 and analyzer
Into the basic light path of diffused light formula experiment by photoelastic method.Wherein, due to the restriction of machine tool chief axis directional run, workpieces processing 5
Clamping height can not possibly be excessive, and the arrangement of vertical direction light path is just restricted, but due to diffused light formula photoelastic experiment principle
Demand, light source need to propagate certain distance to dissipate the viewing area of acquisition bigger, and the effect of speculum 2 is exactly to change light path
Direction so that the diverging light that light source is sent obtains a relatively long spreading distance in the horizontal direction, is existed with solving light path
The problem of major axes orientation arrangement insufficient space.In addition, can 2 structure of speculum of tuning also make it that there are more machine tool structures
Adaptability is capable of the size in controlled observation region at the same time.The effect of ground glass 3 is to further make to diffuse in viewing area
Light distribution is uniform, avoids captured interference fringe from the non-uniform phenomenon of light and shade occur.
The assembling of optical system components is as shown in Figure 2.Consolidated in the case where the amount of feeding is little using horizontal adjustment block 12
Determine reflective mirror 2, the adjusting to reflective mirror angle is realized by mobile stop location.Ground glass 3 is inserted into clamping body and opens in advance
In good groove.Polarizer 4 is fixed on clamping body by polarizer adjustment block 11 in the form of threaded connection, can be along polarizer tune
Monoblock 11 is axial and the axial both direction of polarizer 4 is rotated, and wherein the former is to ensure that polarizer 4 is flat with analyzer 7
OK, the latter is then to adjust the correlation of both polarizer 4 and analyzer 7 polarization axle to realize the demand of shooting.Processing
Workpiece 5 is fixed respectively by two pieces of briquettings 10 in both direction, is avoided long cantilever form, can be effectively reduced the vibration of workpiece,
Thus caused image is substantially reduced to obscure.
For the concrete structure of clamping body 9 as shown in Fig. 3 a, Fig. 3 b and Fig. 3 c, the clamping body 9 includes horizontal direction in straight
The right angle riser 901 at angle；901 top of right angle riser horizontal direction to outside right angle extends to form installation top plate 902, and bottom is to right angle
Outer horizontal direction extends to form fixed bottom plate 905, is set on the inside of the right angle of right angle riser 901 and is used for clamping fixation ground glass 3
Clamping slot 903 and threaded hole 904 for being threadedly coupled polarizer adjustment block 11；Clamping slot 903 is at right angles along right angle riser
901 inner sides right angle are fixedly installed, and threaded hole 904 is arranged in any one plate face of 903 top right angle riser 901 of clamping slot；
Direction of feed of the inner side of right angle riser 901 close to vertical knee-type milling machine 6；Speculum 2 is placed on the inner side of right angle riser 901, lower end by
The 12 spacing fixation of speculum horizontal adjustment cushion block moved horizontally.
Installation through-hole 908 is respectively arranged with along both direction on installation top plate 902, it is as shown in Figure 3c, fixed based on longitudinal direction
Direction, is laterally auxiliary fixed-direction, is respectively fixedly connected workpieces processing 5 from both direction by briquetting 10；It is fixed
Fixing groove 907 is provided with bottom plate 905, for being fixed in the workbench of vertical knee-type milling machine 6；Top plate 902 is installed and is fixed
The reinforcing rib 906 for being connected to the outside of right angle riser 901 is fixed between bottom plate 905.
Embodiment：Sight of the stress wave in free boundary near zone reflection summation rule during high-speed cutting PMMA plates
Survey and probe into.
Embodiment uses light source 1 as no stroboscopic LED white lights, power 200W；2 240 × 240mm of size of speculum,
4 ruler of polarizer is φ 200, to ensure that reflection light area can cover the region of required observation in workpieces processing；Frosted glass
3 size of glass is 400 × 400mm, and surface roughness is higher is advisable for selection, the purpose is to make incident light more fully from
And the illumination condition uniformity in whole viewing area, obtain the stress wave propagation image of quality higher；Workpieces processing 5
For PMMA plates, thickness 5mm, the circular hole of φ 10 is being bored apart from the position of cutting position about 30mm, as free reflecting boundary；
The side edge length 5mm of wire rod quality blade used by tri- shaft vertical milling machines 6 of BCH850, more than sheet metal thickness to ensure this example
Working angles can approximation be considered as orthogonal cutting, in favor of to analysis stress wave propagation in reflect summation rule analysis.
Obtain comprising the following steps that for stress wave propagation image：
Step 1, according to foregoing description selection element, visualization device is built according to Fig. 1：Light source 1 is horizontally placed at milling machine work
Make on platform, adjust the angle of speculum 2, make incident light that the region of required observation in workpieces processing be completely covered；
Step 2, high-speed camera 8 is fixed on vertical direction by tripod, adjusts its lens focus and pendulum off normal is put, adjust
The parameter of section high-speed camera 8 includes sample frequency, resolution ratio and time for exposure so that the picture dimension that it can catch is complete
The full scope for covering the inner stress of work ripple to be observed and propagating；
Step 3, rotation is installed on the analyzer 7 before camera lens so that the polarised light after analyzer is light field；
Step 4, power-on operation, opens 6 power on buttons of vertical knee-type milling machine, and cutter free-runing operation, carries out aim at tool operation, sets phase
The cutting parameter answered, climb cutting cutting experiment is carried out to PMMA plates, and the sampling of high-speed camera 6 is triggered when cutter will be cut and is pressed
Button, records communication process of the stress wave in plate in working angles.
Under the conditions of high-speed cutting, stress can be produced after stress wave propagation to circular hole free interface and unloads and reflects,
After the back wave is with follow-up incidence wave superposition, its stress value is less than incidence wave, as shown in figure 4, circular hole is close to the one of incidence wave
The stripe order recognition situation of side complies fully with above-mentioned theory analysis, shows when carrying out high-speed cutting experiment using vertical knee-type milling machine, this
Visualization device is fully able to realize the observation for propagating inner stress of work ripple.
Examples detailed above is merely illustrative, be not only, it is all within the scope of the present invention or in the similar scope of the invention
Change is included in the invention.
Claims (10)
1. the visual experimental apparatus of cutting stress ripple in a kind of vertical knee-type milling machine, it is characterised in that including optical system, clamping system
System and milling system；
The optical system includes speculum (2), horizontally disposed light source (1), and vertically same from the bottom up successively
Ground glass (3), polarizer (4), analyzer (7) and the high-speed camera (8) that axis is set；Analyzer (7), which is arranged on, to be taken the photograph at a high speed
Camera (8) camera lens front end；
The milling system includes workpieces processing (5) and vertical knee-type milling machine (6)；Workpieces processing (5) is using special with synthetic birefringence
The transparent elastooptic mateiral of property is made；Vertical knee-type milling machine (6) main shaft is vertical with workpieces processing (5), and along workpieces processing (5) plane side
To feeding；
The mounting and clamping system includes clamping body (9)；Workpieces processing (5) is fixed on clamping body (9) upper end, ground glass (3) and rises
Polariscope (4) is arranged on clamping body (9)；
Speculum (2) is placed in below ground glass (3), and is arranged to be formed in the horizontal optical path of light source (1) and is turned to light path, is turned to
After light path irradiates ground glass (3), polarizer (4) and workpieces processing (5) successively, adopted through analyzer (7) by high-speed camera (8)
Collection.
2. the visual experimental apparatus of cutting stress ripple in a kind of vertical knee-type milling machine according to claim 1, it is characterised in that
Workpieces processing (5) is separately fixed at clamping body (9) upper end by briquetting (10) in both direction.
3. the visual experimental apparatus of cutting stress ripple in a kind of vertical knee-type milling machine according to claim 1, it is characterised in that
Ground glass (3) is fixedly plugged on clamping body (9) in fluting, and polarizer (4) is connected by polarizer adjustment block (11) with screw thread
The form connect is fixed on clamping body (9)；Polarizer adjustment block (11) is used for polarizer (4) along polarizer adjustment block (11) axis
To the rotational positioning with the axial both direction of polarizer (4).
4. the visual experimental apparatus of cutting stress ripple in a kind of vertical knee-type milling machine according to claim 1, it is characterised in that
The clamping body (9) includes the rectangular right angle riser (901) of horizontal direction；Riser (901) top in right angle is to right angle Wai Shui
Square to installation top plate (902) is extended to form, bottom horizontal direction to outside right angle extends to form fixed bottom plate (905), and right angle is stood
Set on the inside of the right angle of plate (901) and be used for the clamping slot (903) of clamping fixation ground glass (3) and for being threadedly coupled polarizer
The threaded hole (904) of adjustment block (11)；Direction of feed of the inner side of right angle riser (901) close to vertical knee-type milling machine (6)；Workpieces processing
(5) fixed by installing top plate (902) in both direction, right angle riser (901) is fixed on vertical milling by fixed bottom plate (905)
On the workbench of bed (6)；Speculum (2) is placed on the inside of right angle riser (901), and lower end is adjusted by the speculum moved horizontally is horizontal
The spacing fixation of whole cushion block (12).
5. the visual experimental apparatus of cutting stress ripple in a kind of vertical knee-type milling machine according to claim 4, it is characterised in that
Installation through-hole (908) is respectively arranged with along both direction on installation top plate (902), fixing groove is provided with fixed bottom plate (905)
(907), install and be fixed with the reinforcing rib being connected on the outside of right angle riser (901) between top plate (902) and fixed bottom plate (905)
(906)。
6. the visual experimental apparatus of cutting stress ripple in a kind of vertical knee-type milling machine according to claim 4, it is characterised in that
Clamping slot (903) is at right angles fixedly installed along right angle on the inside of right angle riser (901).
7. a kind of visualized experiment method of cutting stress ripple in vertical knee-type milling machine, it is characterised in that any based on claim 1-6
Visual experimental apparatus described in one, includes the following steps,
Step 1, light source (1) is horizontally placed on the workbench of vertical knee-type milling machine (6), the angle of adjustment speculum (2), makes incident light
The region of required observation in workpieces processing (5) is completely covered；
Step 2, high-speed camera (8) adjusts its lens focus and pendulum off normal is put, adjust high-speed camera (8) in vertical direction
Parameter so that its picture dimension that can be caught is fully contemplated by the scope that the inner stress of work ripple to be observed is propagated；
Step 3, rotation is installed on the analyzer (7) before camera lens so that the polarised light after analyzer (7) is bright
；
Step 4, vertical knee-type milling machine (6) is run, aim at tool operation is carried out, corresponding cutting parameter is set, workpieces processing (5) is carried out suitable
Milling cutting experiment, high-speed camera (6) sampling button is triggered when cutter will be cut, and stress wave is in plate in record working angles
Communication process in material.
8. the visualized experiment method of cutting stress ripple in a kind of vertical knee-type milling machine according to claim 7, it is characterised in that
Light source (1) is using no stroboscopic LED white lights.
9. the visualized experiment method of cutting stress ripple in a kind of vertical knee-type milling machine according to claim 7, it is characterised in that
Further included in step 1, the parallel step of adjustment polarizer (4) same to analyzer (7).
10. the visualized experiment method of cutting stress ripple, its feature exist in a kind of vertical knee-type milling machine according to claim 7
In high-speed camera (8) parameter includes sample frequency, resolution ratio and time for exposure.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111707566A (en) * | 2020-06-24 | 2020-09-25 | 太原理工大学 | Experimental system for researching dynamic response of structure under impact load and application method |
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| CN2042955U (en) * | 1988-07-09 | 1989-08-16 | 浙江大学 | Experimental facility with photoelastic method for studying cutting machanism |
| JP2013253788A (en) * | 2012-06-05 | 2013-12-19 | Oputouea Kk | Stress distribution measuring apparatus |
| CN105550485A (en) * | 2016-02-29 | 2016-05-04 | 西安交通大学 | Method for analyzing stress wave effect in high-speed milling process |
| CN105928775A (en) * | 2016-04-18 | 2016-09-07 | 天津商业大学 | Microscopic photoelastic experiment system for testing stress field of material micro-area |
| CN106247961A (en) * | 2016-10-18 | 2016-12-21 | 淮阴师范学院 | The precision measurement system of a kind of bore inner diameter and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2042955U (en) * | 1988-07-09 | 1989-08-16 | 浙江大学 | Experimental facility with photoelastic method for studying cutting machanism |
| JP2013253788A (en) * | 2012-06-05 | 2013-12-19 | Oputouea Kk | Stress distribution measuring apparatus |
| CN105550485A (en) * | 2016-02-29 | 2016-05-04 | 西安交通大学 | Method for analyzing stress wave effect in high-speed milling process |
| CN105928775A (en) * | 2016-04-18 | 2016-09-07 | 天津商业大学 | Microscopic photoelastic experiment system for testing stress field of material micro-area |
| CN106247961A (en) * | 2016-10-18 | 2016-12-21 | 淮阴师范学院 | The precision measurement system of a kind of bore inner diameter and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111707566A (en) * | 2020-06-24 | 2020-09-25 | 太原理工大学 | Experimental system for researching dynamic response of structure under impact load and application method |
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