CN107999847B - The visual experimental apparatus and method of cutting stress wave in a kind of vertical knee-type milling machine - Google Patents
The visual experimental apparatus and method of cutting stress wave in a kind of vertical knee-type milling machine Download PDFInfo
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- CN107999847B CN107999847B CN201711342655.7A CN201711342655A CN107999847B CN 107999847 B CN107999847 B CN 107999847B CN 201711342655 A CN201711342655 A CN 201711342655A CN 107999847 B CN107999847 B CN 107999847B
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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
Abstract
The visual experimental apparatus and method of cutting stress wave 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 reflecting mirror, horizontally disposed light source, and the ground glass, polarizer, analyzer and the high-speed camera that are successively coaxially disposed from the bottom up along the vertical direction；Vertical knee-type milling machine main shaft is vertical with workpieces processing, and feeds along workpieces processing in-plane；Workpieces processing is fixed on clamping body upper end, and ground glass and polarizer are arranged on clamping body；Reflecting mirror is placed in below ground glass, and is set in the horizontal optical path of light source to be formed and is turned to optical path, after steering optical path successively irradiates ground glass, polarizer and workpieces processing, is acquired through analyzer by high-speed camera.The present invention uses the reflecting mirror of adjustable angle, so that the arrangement of light path system is realized and observed under high-speed cutting state material internal stress wave propagation without successively arranging 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 wave in specially a kind of vertical knee-type milling machine
Experimental provision and method.
Background technique
The approach for improving machining efficiency mainly includes two sides of speed for optimizing Cutting Process design and improving cutting
Face.Has more achievement at present for Cutting Process optimization, but its space for further promoting processing efficiency is smaller.Therefore
Cutting speed is improved, realizes that high-speed cutting just becomes an emphasis for promoting processing efficiency research at present.In addition, using high speed
When cutting technology, cutting force is smaller, and chip can take away a large amount of cutting heat, and heat-mechanical condition of cutter and machined surface is slow
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 theory be based on static analytical methods, obtained in slow cutting Machining Analysis extensively and
Effective application, but it is built upon on the basis of material properties is constant and static analysis, and this is allowed for when cutting speed is big
After width improves, can not effectively explain generated phenomenon in cutting process: if cutting force reduces, chip is serrating etc..
In fact, the regional area strain rate of material tends to reach 10 with the raising of cutting speed6/ s, at this
The strain rate effect as possessed by material under kind state, the attributes such as yield limit of material can generate biggish variation；In addition,
So that knife-bits zone of action development rate is greatly speeded up, the material infinitesimal inertia effect is more significant for the raising of cutting speed,
The deformation of material is the same as there is very big difference under this state under static(al) state.Therefore it needs to consider high-speed cutting using kinetic theory
Effects of stress wave to analyze and research to its mechanism.
Currently, the method that measurement material internal stress wave is propagated is broadly divided into resistance-strain method and dynamic photoelasticity.Before
Person measures and records the stress variation situation of target point using dynamic strain indicator by placing foil gauge in target position,
And then the propagation of entire target area internal stress wave is derived, this measurement method implements complex, and can not intuitively obtain
Stress wave propagation state in whole region；And the latter then utilizes the synthetic birefringence effect of certain material, it is inclined by projection-type
Polarized-light optical system converts optical fringe for the stress state of material and is acquired, and is used for stress wave Study on Problems.
In practical study and experiment, since vertical knee-type milling machine main axle structure is arranged in same erect with workpieces processing cutting position
In straight line, allowing for incident ray can only enter below workpieces processing, and due to the limitation of main shaft Z-direction stroke, light source is difficult
With in workpiece arranged just beneath, so that the requirement that optical system structure is coaxially arranged seriously is limited, so that current equipment is difficult
With the observation and visualization for the stress wave propagation in vertical knee-type milling machine milling process.
Summary of the invention
Aiming at the problems existing in the prior art, the present invention provide cutting stress wave in a kind of vertical knee-type milling machine visualization it is real
Experiment device and method, structure is simple, reasonable design, easy operation, can effectively solve the problem that photoelasticity interference fringe acquires 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 wave in a kind of vertical knee-type milling machine, including optical system, mounting and clamping system and milling
System；
The optical system includes reflecting mirror, horizontally disposed light source, and successively coaxial from the bottom up along the vertical direction
Ground glass, polarizer, analyzer and the high-speed camera of setting；Analyzer is arranged in 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 feeds along workpieces processing in-plane；
The mounting and clamping system includes clamping body；Workpieces processing is fixed on clamping body upper end, ground glass and polarizer setting
On clamping body；
Reflecting mirror is placed in below ground glass, and is set to be formed in the horizontal optical path of light source and is turned to optical path, and optical path is turned to
After successively irradiating ground glass, polarizer and workpieces processing, acquired through analyzer by high-speed camera.
Preferably, workpieces processing is separately fixed at clamping body upper end in both direction by briquetting.
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 for polarizer along polarizer adjustment block axial direction and polarizer axis
Rotational positioning to both direction.
Preferably, the clamping body includes the rectangular right angle vertical plate of horizontal direction；Right angle vertical plate top is to outside right angle
Horizontal direction extends to form installation top plate, and bottom end horizontal direction to outside right angle extends to form fixed bottom plate, the right angle of right angle vertical plate
Threaded hole of the inside setting for the clamping slot of the fixed ground glass of clamping and for being threadedly coupled polarizer adjustment block；Right angle is vertical
Direction of feed of the inside of plate close to vertical knee-type milling machine；Workpieces processing is fixed by installation top plate in both direction, and right angle vertical plate is logical
Fixed bottom plate is crossed to be fixed on the workbench of vertical knee-type milling machine；Reflecting mirror is placed on the inside of right angle vertical plate, and lower end is by moving horizontally
The limit of reflecting mirror horizontal adjustment cushion block is fixed.
Further, it installs and is respectively arranged with installation through-hole on top plate in both directions, be provided with fixation on fixed bottom plate
Slot is installed and is fixed with the reinforcing rib being connected on the outside of right angle vertical plate 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 vertical plate.
A kind of visualized experiment method of cutting stress wave in vertical knee-type milling machine, is 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 reflecting mirror, keep incident light complete
Cover the region of required observation in workpieces processing；
Step 2, high-speed camera adjusts its lens focus and pendulum deviation is set, adjust high-speed camera ginseng in vertical direction
Number, so that its screen size that can be captured is fully contemplated by the range that the inner stress of work wave 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 triggers high-speed camera when cutter will be cut and samples button, and stress wave is in plate in record cutting process
Communication process.
Preferably, light source is using no stroboscopic LED white light.
It preferably, further include the adjustment polarizer step parallel with analyzer in step 1.
Preferably, high-speed camera parameter includes sample frequency, resolution ratio and time for exposure.
Compared with prior art, the invention has the following beneficial technical effects:
The present invention uses the reflecting mirror of adjustable angle, so that the arrangement of light path system is not necessarily to along vertical knee-type milling machine main shaft square
To successively arranging, the clamping height of workpiece is effectively reduced, acquires the color-bar on elastooptic mateiral surface during high-speed milling
Line develops image, realizes and observes under high-speed cutting state material internal stress wave propagation, to obtain in workpieces processing
The spread state of stress wave can further investigate high-speed cutting in favor of carrying out analysis and research to high speed machining mechanism
Stress wave propagation, reflection and superposed process in journey.
Further, by using the fixed photoelastic material of adjustable double briquette forms, do not reducing observable region area
Under the premise of, the vibration of workpiece in cutting process is effectively reduced, the image caused by avoiding because of vibration is fuzzy.
Detailed description of the invention
Fig. 1 is present system arrangement schematic diagram.
Fig. 2 is the installation diagram of mounting and clamping system of the present invention.
Fig. 3 a is the front view of clamping body of the present invention.
Fig. 3 b is the top view of clamping body of the present invention.
Fig. 3 c is the sectional view along A-A of clamping body of the present invention.
Fig. 4 is point of stress wave propagation under the conditions of high-speed cutting using PMMA plate taken by this visualization device
Cloth striped.
In figure: 1, light source, 2, reflecting mirror, 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, reflecting mirror horizontal adjustment cushion block.
Specific embodiment
Below 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 wave of the present invention comprising, optical system, mounting and clamping system
And milling system；Optical system, which is used to realize, shows as workpieces processing internal stress colored striped；Milling system is used to adding
Work workpiece carries out high-speed milling；Mounting and clamping system is used to carry out clamping to workpieces processing and opticator element to fix.Also match
It is equipped with high-speed camera, record is acquired to the stress wave propagation image in cutting process workpieces processing.
Optical system includes light source 1, reflecting mirror 2, ground glass 3, polarizer 4 and analyzer 7, by these optical devices
The optical path of composition is distributed in milling system at approximate 90 °.Mounting and clamping system includes clamping body 9, briquetting 10, polarizer adjustment block 11
And reflecting mirror 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 reflecting mirror 2, ground glass in optical system
3, polarizer 4 is installed on mounting and clamping system, and workpieces processing 5 is fixed by briquetting, by changing reflecting mirror horizontal adjustment cushion block 12
To adjust 2 position of reflecting mirror.
The present invention overcomes with 5 cutting position of workpieces processing be arranged in same vertical line due to 6 main axle structure of vertical knee-type milling machine
It is interior, caused by incident ray can only be by entering below workpieces processing 5, and main shaft Z-direction stroke limiting, light source be difficult to workpiece just
The problem of arranged beneath, while also achieving the adjusting to optical path.So that light source can be horizontally placed at vertical knee-type milling machine work
Limitation on platform to overcome 6 structure of vertical knee-type milling machine to arrange, and realize the adjusting to optical path.
Based on photoelasticity principle, as shown in Figure 1, by light source 1, reflecting mirror 2,7 structure of ground glass 3, polarizer 4 and analyzer
At 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 be excessively high, and the arrangement of vertical direction optical path is just restricted, but due to diffused light formula photoelastic experiment principle
Demand, light source need to propagate certain distance to dissipate and obtain bigger viewing area, and the effect of reflecting mirror 2 is exactly to change optical path
Direction is existed so that the diverging light that light source is issued obtains a relatively long spreading distance in the horizontal direction with solving optical path
The problem of major axes orientation arrangement insufficient space.In addition, can 2 structure of reflecting mirror of tuning there is it to more machine tool structures
Adaptability is capable of the size in controlled observation region simultaneously.The effect of ground glass 3 is to further make to diffuse in viewing area
Light distribution is uniform, and captured interference fringe is avoided the non-uniform phenomenon of light and shade occur.
The assembly 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 slot.Polarizer 4 is fixed on clamping body by way of polarizer adjustment block 11 is threadedly coupled, can be along polarizer tune
Monolith 11 is axial and the axial both direction of polarizer 4 is rotated, and wherein the former is to guarantee that polarizer 4 is flat with analyzer 7
Row, the latter are 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 by two pieces of briquettings 10 in both direction respectively, is avoided long cantilever form, can be effectively reduced the vibration of workpiece,
It is fuzzy to substantially reduce thus caused image.
For the specific 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 vertical plate 901 at angle；901 top of right angle vertical plate horizontal direction to outside right angle extends to form installation top plate 902, and bottom end is to right angle
Outer horizontal direction extends to form fixed bottom plate 905, and setting is for the fixed ground glass 3 of clamping on the inside of the right angle of right angle vertical plate 901
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 vertical plate
The fixed setting of 901 insides right angle, threaded hole 904 are arranged in any one plate face of 903 top right angle vertical plate 901 of clamping slot；
Direction of feed of the inside of right angle vertical plate 901 close to vertical knee-type milling machine 6；Reflecting mirror 2 is placed on the inside of right angle vertical plate 901, lower end by
The limit of reflecting mirror horizontal adjustment cushion block 12 moved horizontally is fixed.
It is respectively arranged with installation through-hole 908 in both directions 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 on 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 901 outside of right angle vertical plate 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 plate
It surveys and probes into.
The used light source 1 of embodiment is no stroboscopic LED white light, power 200W；2 240 × 240mm of size of reflecting mirror,
4 ruler of polarizer is φ 200, to guarantee that reflection light area can cover the region of required observation in workpieces processing；Frosted glass
Glass 3 is having a size of 400 × 400mm, and surface roughness is higher is advisable for selection, the purpose is to make incident light more sufficiently from
And the illumination condition uniformity in entire viewing area, obtain the higher stress wave propagation image of quality；Workpieces processing 5
For PMMA plate, thickness 5mm bores the circular hole of φ 10 in the position apart from cutting position about 30mm, as free reflecting boundary；
The side edge length 5mm of wire rod quality blade used by tri- shaft vertical milling machine 6 of BCH850, greater than plate thickness to ensure this example
Cutting process can approximation be considered as orthogonal cutting, in favor of to analysis stress wave propagation in reflect summation rule analysis.
Obtaining stress wave propagation image, specific step is as follows:
Step 1, according to foregoing description selection element, build visualization device according to Fig. 1: light source 1 is horizontally placed at milling machine work
Make on platform, adjusts the angle of reflecting mirror 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 deviation is set, adjust
The parameter for saving high-speed camera 8 includes sample frequency, resolution ratio and time for exposure, so that its screen size that can be captured is complete
Cover the range that the inner stress of work wave to be observed is propagated entirely；
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, and phase is arranged
The cutting parameter answered, carries out climb cutting cutting experiment to PMMA plate, 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 cutting process.
Stress can be generated under the conditions of high-speed cutting, after stress wave propagation to circular hole free interface to unload and reflect,
After the back wave is superimposed with subsequent incidence wave, 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 wave.
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 (9)
1. the visual experimental apparatus of cutting stress wave in a kind of vertical knee-type milling machine, which is characterized in that including optical system, clamping system
System and milling system；
The optical system includes reflecting mirror (2), horizontally disposed light source (1), and successively same from the bottom up along the vertical direction
Ground glass (3), polarizer (4), analyzer (7) and the high-speed camera (8) of axis setting；Analyzer (7) setting is being 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)；
Reflecting mirror (2) is placed in below ground glass (3), and is set to be formed in the horizontal optical path of light source (1) and is turned to optical path, is turned to
After optical path successively irradiates ground glass (3), polarizer (4) and workpieces processing (5), adopted through analyzer (7) by high-speed camera (8)
Collection；Reflecting mirror (2) is used for the size in controlled observation region, makes incident light that required observation on workpieces processing (5) be completely covered
Region；
The clamping body (9) includes the rectangular right angle vertical plate (901) of horizontal direction；Vertical plate (901) top in right angle is to right angle
Outer horizontal direction extends to form installation top plate (902), and bottom end horizontal direction to outside right angle extends to form fixed bottom plate (905), directly
Setting is for the clamping slot (903) of clamping fixed ground glass (3) and for being threadedly coupled on the inside of the right angle of angle vertical plate (901)
The threaded hole (904) of polariscope adjustment block (11)；Direction of feed of the inside of right angle vertical plate (901) close to vertical knee-type milling machine (6)；Processing
Workpiece (5) is fixed by installation top plate (902) in both direction, and right angle vertical plate (901) is fixed on vertical by fixed bottom plate (905)
On the workbench of formula milling machine (6)；The reflecting mirror (2) of adjustable angle is placed on the inside of right angle vertical plate (901), and lower end is moved by level
Dynamic reflecting mirror horizontal adjustment cushion block (12), which limits, to be fixed.
2. the visual experimental apparatus of cutting stress wave in a kind of vertical knee-type milling machine according to claim 1, which is characterized in that
Workpieces processing (5) is separately fixed at clamping body (9) upper end in both direction by briquetting (10).
3. the visual experimental apparatus of cutting stress wave in a kind of vertical knee-type milling machine according to claim 1, which is characterized in that
Ground glass (3) is fixedly plugged in the clamping slot (903) on clamping body (9) Nei, and polarizer (4) passes through polarizer adjustment block (11)
The form being threadedly coupled is fixed on clamping body (9)；Polarizer adjustment block (11) is adjusted for polarizer (4) along polarizer
The axial rotational positioning with polarizer (4) axial both direction of block (11).
4. the visual experimental apparatus of cutting stress wave in a kind of vertical knee-type milling machine according to claim 1, which is characterized in that
It is respectively arranged in both directions installation through-hole (908) in installation top plate (902), is provided with fixing groove on fixed bottom plate (905)
(907), it installs between top plate (902) and fixed bottom plate (905) and is fixed with the reinforcing rib being connected on the outside of right angle vertical plate (901)
(906)。
5. the visual experimental apparatus of cutting stress wave in a kind of vertical knee-type milling machine according to claim 1, which is characterized in that
Clamping slot (903) is at right angles fixedly installed along right angle on the inside of right angle vertical plate (901).
6. a kind of visualized experiment method of cutting stress wave in vertical knee-type milling machine, which is characterized in that any based on claim 1-5
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), adjusts the angle of reflecting mirror (2), makes incident light
The region of required observation on workpieces processing (5) is completely covered；And diffused light in viewing area is further made by ground glass 3
It is evenly distributed, captured interference fringe is avoided the non-uniform phenomenon of light and shade occur；
Step 2, high-speed camera (8) adjusts its lens focus and pendulum deviation is set, adjust high-speed camera (8) in vertical direction
Parameter, so that its screen size that can be captured is fully contemplated by the range that the inner stress of work wave 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) are run, carries out aim at tool operation, corresponding cutting parameter is set, workpieces processing (5) carried out suitable
Cutting experiment is milled, high-speed camera (8) are triggered when cutter will be cut and sample button, stress wave in cutting process is recorded and is adding
Communication process in work workpiece (5) plate.
7. the visualized experiment method of cutting stress wave in a kind of vertical knee-type milling machine according to claim 6, which is characterized in that
Light source (1) is using no stroboscopic LED white light.
8. the visualized experiment method of cutting stress wave in a kind of vertical knee-type milling machine according to claim 6, which is characterized in that
It further include the parallel step of adjustment polarizer (4) same to analyzer (7) in step 1.
9. the visualized experiment method of cutting stress wave in a kind of vertical knee-type milling machine according to claim 6, which is characterized in that
High-speed camera (8) parameter includes sample frequency, resolution ratio and time for exposure.
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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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2017
- 2017-12-14 CN CN201711342655.7A patent/CN107999847B/en active Active
Patent Citations (5)
| 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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