CN202421075U - Image-based normal contact stiffness measuring device for assembly joint surfaces of large machine tools - Google Patents
Image-based normal contact stiffness measuring device for assembly joint surfaces of large machine tools Download PDFInfo
- Publication number
- CN202421075U CN202421075U CN2011205376060U CN201120537606U CN202421075U CN 202421075 U CN202421075 U CN 202421075U CN 2011205376060 U CN2011205376060 U CN 2011205376060U CN 201120537606 U CN201120537606 U CN 201120537606U CN 202421075 U CN202421075 U CN 202421075U
- Authority
- CN
- China
- Prior art keywords
- header
- image
- contact stiffness
- camera
- drawn
- 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.)
- Withdrawn - After Issue
Links
Landscapes
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model provides an image-based normal contact stiffness measuring device for assembly joint surfaces of large machine tools. The image-based normal contact stiffness measuring device comprises a reference marking mechanism and a measurement acquisition device, wherein the reference marking mechanism comprises a magnetic base, a precision scale, a cursor, a marking head and a spring mechanism; the precision scale is fixed to the magnetic base; the cursor is in sliding fit with a scale; the marking head is vertically arranged on the cursor; the three-jaw spring mechanism which is connected with the marking head is arranged in the cursor; the measurement acquisition device comprises a camera, a connecting wire, a computer and a tripod; and the camera is fixed to the tripod and is connected with the computer through the connecting wire. According to the image-based normal contact stiffness measuring device, different contact layer dependent variables are acquired before and after loading by means of image processing by marking a mark interface perfect elastic contact layer and a plastic influence-containing contact layer respectively, so that the normal contact stiffness of the joint surfaces is calculated and acquired. The measuring system is convenient and fast and has portability and wide application range.
Description
Technical field
The utility model is particularly related to a kind of lathe faying face normal direction contact stiffness measuring system, belongs to heavy duty machine tools alignment measurement technical field.
Background technology
Along with the high speed development of high precision large-sized machine tool mechanical equipment, some were begun to become key by the problem that the people ignores in the past.Wherein, a large amount of surface of contact that exist have blocked the whole continuity of equipment in the device structure, and have shown very high non-linearly, directly influence the power performance of main equipment.
Surface quality and the contact stress, the contact condition that are fitted to each other contact stiffness and the faying face of face have confidential relation, if can provide the related law of these influence factors, will bring greatly benefit for the measurement of contact stiffness.The measurement of contact stiffness in the past only rests on the experimental study stage, has provided some measurement mechanisms, can't in engineering reality, use.Even be applied in the reality, because the geometrical property of contact interface and the restriction of installation site, the contact stiffness that makes these measuring methods can't be applied to the lathe fitting surface is measured.
Summary of the invention
The purpose of the utility model provides a kind of heavy duty machine tools based on image and is fitted to each other face normal direction contact stiffness measurement mechanism, to solve the problems of the technologies described above.
To achieve these goals, the utility model adopts following technical scheme: a kind of heavy duty machine tools based on image are fitted to each other face normal direction contact stiffness measurement mechanism, it is characterized in that drawing mark mechanism by benchmark forms with the measurement harvester;
Benchmark is drawn mark mechanism and is comprised magnetic force base (10), precision scale (20), vernier (40), draws header (50) and spring device (30); Precision scale (20) is fixed on the magnetic force base (10), and vernier (40) is slidingly matched with scale (20); Draw header (50) and vertically be arranged on the vernier (40), the three-jaw spring device (30) that connects stroke header (50) is installed in the vernier (40);
Measure harvester and comprise camera (2), connecting line (5), computing machine (6) and tripod (4); Industrial camera (2) is fixed on the tripod (4), and industrial camera (2) is connected with computing machine (6) through connecting line (5);
The three-jaw that benchmark is drawn in the mark mechanism is drawn header (50); The contact layer of difference indicia band plastic yield and the elastic layer of perfect elasticity distortion; Camera (2) collection of measuring in the harvester loads the view data that the front and back three-jaw is drawn header (50) gauge point; Send computing machine (6) to; Computing machine (6) combining image technology is obtained the front and back relative shift of gauge point, obtains the dependent variable of corresponding elastic layer and contact layer or claims marker pip displacement, and then demonstrate contact interface normal direction contact stiffness through computing machine (6).
The header (50) of drawing that benchmark is drawn in the mark mechanism is drawn header for three-pawl type; Draw header (50) in the middle of comprising second header (52) and be positioned at the second header upside first header (51), the 3rd header (53) of downside.
It all is predefined according to measurement range that benchmark is drawn first header (51) and the distance distance second header (52) between and second header (52) and three header (53) between of mark in the mechanism.
Measure on the harvester camera (2) microspur zoom lens (1) is installed.
The basic thought of the utility model utilizes three-jaw to draw header 50; The contact layer of difference indicia band plastic yield and the elastic layer of perfect elasticity distortion; The view data of utilizing high resolution industrial CCD camera 2 to gather gauge point under the load condition; The combining image technology is obtained the relative shift of gauge point, with the dependent variable (marker pip displacement) that obtains corresponding elastic layer and contact layer, and then obtains contact interface normal direction contact stiffness.
Compared with prior art; The utlity model has following advantage: the utility model through mark interface perfect elasticity contact layer respectively with comprise plasticity and influence contact layer; Utilize Flame Image Process to obtain different contact layer dependent variables before and after loading; And then calculate faying face normal direction contact stiffness, be used to instruct machine tool structure design and assembly technology to improve; Actual test shows, the utility model are not only applicable to experimental study, are applicable to the measurement check demand of actual condition fully yet.The utility model is convenient and swift based on the lathe faying face normal direction contact stiffness measurement mechanism of image, possesses transportability, and is applied widely, can really be widely used in the actual normal direction contact stiffness of engineering and measure.
Description of drawings
Fig. 1 draws the synoptic diagram of mark mechanism for the benchmark of the utility model measuring system.
Fig. 2 measures the synoptic diagram of acquisition system for the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is done and to be described in further detail.
Fig. 1 and shown in Figure 2, the utility model is fitted to each other face normal direction contact stiffness measurement mechanism based on the heavy duty machine tools of image, comprises that benchmark draws mark mechanism and measure harvester.
A kind of heavy duty machine tools based on image are fitted to each other face normal direction contact stiffness measurement mechanism, comprise benchmark draw the mark mechanism; Said benchmark is drawn mark mechanism and is comprised magnetic force base, precision scale, vernier, draws header and spring device; The precision scale is fixed on the magnetic force base, and vernier and scale are slidingly matched; Draw header and vertically be arranged on the vernier, the three-jaw spring device that connects stroke header is installed in the vernier; Said heavy duty machine tools based on image are fitted to each other face normal direction contact stiffness measurement mechanism and also comprise the measurement harvester; Said measurement harvester comprises camera, connecting line, computing machine and tripod; Camera fixing is on tripod, and camera connects computing machine through connecting line.
Drawing header is that three-pawl type is drawn header; Draw header and comprise the second middle header and first header, the 3rd header that are positioned at the second header both sides.
Distance between distance between first header and second header and the 3rd header and second header is all in advance given according to measurement range.
The microspur zoom lens is installed on the camera.
Benchmark is drawn mark mechanism and is comprised magnetic force base 10, precision scale 20, vernier 40, draws header 50 and three-jaw spring device 30.Precision scale 20 is fixed on the magnetic force base 10, and vernier 40 is slidingly matched with scale 20; Drawing header 50 adopts three-pawl type (to guarantee gauge point spacing strict conformance, accurately and reliably), vertically be arranged on the vernier 40, with vernier 40 motions; Be equipped with in the vernier 40 and connect the three-jaw spring device 30 of drawing header 50.
Concrete operations: it is fixing through magnet base 10 absorption that benchmark is drawn mark mechanism, guarantees that three-jaw draws 50 3 lines of header perpendicular to surface of contact to be measured; Surface of contact position, slip vernier 40 arrival interface is as the three-jaw initial position, and the up-down adjustment vernier makes the surface of contact position be positioned at three-jaw ideal mark scope, as the measuring position; Press three-jaw spring device 30, make three-jaw draw header 50 contact measured faces, on to be measured, stay the marking, accomplish the different contact layer marks in interface.
Measure industrial camera 2, zoom lens 1, connecting line 5, computing machine 6, tripod 4 and object distance fine setting supporting plate 3 that harvester comprises 1,000,000 class resolution ratios.Concrete fitting operation, assembling camera 2 and camera lens 1, fixed camera 2 connects tripod 4 and object distance fine setting supporting plate 3 on object distance fine setting supporting plate 3, and tripod 4 places the ground or the platform of steady no focus; Connect camera 2 and computing machine 6 through connecting line 5.
The utility model three-jaw draws second header 52 of header 50 in the middle of comprising, be positioned at first header 51 of the second header upside and be positioned at the 3rd header 53 of the second header downside; Distance between the distance between first header 51 and second header 52 and second header 52 and the 3rd header 53 is all in advance given according to measurement range.
Spacing in the middle of the utility model is preferred between second header 52 and first header 51 is 3-5mm, and the spacing between middle second header 52 and the 3rd header 53 is 5-8mm; During line, middle header 52 and be positioned at upper strata contact 8 zones of surface of contact 9 upsides apart from first header 51 of its close together is positioned at lower floor's contact 10 zones of surface of contact 9 downsides apart from middle header 52 the 3rd headers 53 far away; The utility model three-jaw is drawn the harmless black round dot 7 that is of header 50 marks.
Claims (4)
1. the heavy duty machine tools based on image are fitted to each other face normal direction contact stiffness measurement mechanism, it is characterized in that drawing mark mechanism by benchmark forms with the measurement harvester;
Benchmark is drawn mark mechanism and is comprised magnetic force base (10), precision scale (20), vernier (40), draws header (50) and spring device (30); Precision scale (20) is fixed on the magnetic force base (10), and vernier (40) is slidingly matched with scale (20); Draw header (50) and vertically be arranged on the vernier (40), the three-jaw spring device (30) that connects stroke header (50) is installed in the vernier (40);
Measure harvester and comprise camera (2), connecting line (5), computing machine (6) and tripod (4); Industrial camera (2) is fixed on the tripod (4), and industrial camera (2) is connected with computing machine (6) through connecting line (5);
The three-jaw that benchmark is drawn in the mark mechanism is drawn header (50); The contact layer of difference indicia band plastic yield and the elastic layer of perfect elasticity distortion; Camera (2) collection of measuring in the harvester loads the view data that the front and back three-jaw is drawn header (50) gauge point; Send computing machine (6) to; Computing machine (6) combining image technology is obtained the front and back relative shift of gauge point, obtains the dependent variable of corresponding elastic layer and contact layer or claims marker pip displacement, and then demonstrate contact interface normal direction contact stiffness through computing machine (6).
2. the heavy duty machine tools based on image according to claim 1 are fitted to each other face normal direction contact stiffness measurement mechanism, it is characterized in that benchmark draws the draw header (50) of mark in the mechanism and draw header for three-pawl type; Draw header (50) in the middle of comprising second header (52) and be positioned at the second header upside first header (51), the 3rd header (53) of downside.
3. the heavy duty machine tools based on image according to claim 2 are fitted to each other face normal direction contact stiffness measurement mechanism, it is characterized in that it all is predefined according to measurement range that benchmark is drawn first header (51) and the distance distance second header (52) between and second header (52) and three header (53) between of mark in the mechanism.
4. the heavy duty machine tools based on image according to claim 1 are fitted to each other face normal direction contact stiffness measurement mechanism, it is characterized in that measuring microspur zoom lens (1) is installed on the harvester camera (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205376060U CN202421075U (en) | 2011-12-20 | 2011-12-20 | Image-based normal contact stiffness measuring device for assembly joint surfaces of large machine tools |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205376060U CN202421075U (en) | 2011-12-20 | 2011-12-20 | Image-based normal contact stiffness measuring device for assembly joint surfaces of large machine tools |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202421075U true CN202421075U (en) | 2012-09-05 |
Family
ID=46745829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205376060U Withdrawn - After Issue CN202421075U (en) | 2011-12-20 | 2011-12-20 | Image-based normal contact stiffness measuring device for assembly joint surfaces of large machine tools |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202421075U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435607A (en) * | 2011-12-20 | 2012-05-02 | 沈机集团昆明机床股份有限公司 | Image-based measuring device for normal contact stiffness of assembled jointing surface of large-size machine tool |
| CN106768741A (en) * | 2016-12-07 | 2017-05-31 | 北京工业大学 | A kind of machine tool basic joint surface contact stiffness computational methods for considering that concrete micro-bulge is broken |
-
2011
- 2011-12-20 CN CN2011205376060U patent/CN202421075U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435607A (en) * | 2011-12-20 | 2012-05-02 | 沈机集团昆明机床股份有限公司 | Image-based measuring device for normal contact stiffness of assembled jointing surface of large-size machine tool |
| CN102435607B (en) * | 2011-12-20 | 2014-05-14 | 沈机集团昆明机床股份有限公司 | Image-based measuring device for normal contact stiffness of assembled jointing surface of large-size machine tool |
| CN106768741A (en) * | 2016-12-07 | 2017-05-31 | 北京工业大学 | A kind of machine tool basic joint surface contact stiffness computational methods for considering that concrete micro-bulge is broken |
| CN106768741B (en) * | 2016-12-07 | 2018-12-07 | 北京工业大学 | A kind of lathe-basis joint surface contact stiffness calculation method considering that concrete micro-bulge is broken |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103676976B (en) | The bearing calibration of three-dimensional working platform resetting error | |
| CN102538646A (en) | Tolerance test template for master node of ship hull and detection method thereof | |
| CN102435607B (en) | Image-based measuring device for normal contact stiffness of assembled jointing surface of large-size machine tool | |
| CN103615957A (en) | Measuring tool for measuring size of D-shaped head | |
| CN202421075U (en) | Image-based normal contact stiffness measuring device for assembly joint surfaces of large machine tools | |
| CN103673964A (en) | Positioning fixture for measuring roundness of cylinders | |
| CN103063113A (en) | Detecting jig for semiround workpiece | |
| CN105458351A (en) | Detecting tool probe for drilling depth and deviation size | |
| CN203266623U (en) | Rectangular bus lap joint rapid scribing template | |
| CN202903071U (en) | Machinery zero type height gauge | |
| CN208805146U (en) | A kind of center positioning device suitable for shaft hole series component | |
| CN208688625U (en) | A kind of precision alterable formula pressure sensor | |
| CN203908885U (en) | Toggle pin post-welding bending test inspection tester | |
| CN202788804U (en) | Laser calibration device for measuring angle difference of directional well project | |
| CN103358230A (en) | Measurement system and measurement method for honing machine | |
| CN102928336B (en) | Method for measuring slippage of steel plate concrete structure | |
| CN105203009A (en) | Planeness measuring device | |
| CN103033107B (en) | Device and measuring method thereof for the central axial position measurement of raceway | |
| CN102322839B (en) | Device and method for measuring light emergent angle of optical virtual light source | |
| CN105091710A (en) | Method and device for detecting inner width of crucible | |
| CN203869647U (en) | Measuring tool measuring dimension of D-shaped head | |
| CN103529655A (en) | Method and system for calibrating linearity of displacement platform | |
| CN204177337U (en) | A kind of right alignment device for fast detecting | |
| CN105387815A (en) | Method of accurately measuring displacement through a principle that a target object approaches to a coordinate origin of a visual sensor as much as possible | |
| CN113124734A (en) | Mechanical type subway tunnel section of jurisdiction platform-staggering dipperstick |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120905 Effective date of abandoning: 20140514 |
|
| RGAV | Abandon patent right to avoid regrant |