CN202869732U - Surface burr differential measurement device - Google Patents
Surface burr differential measurement device Download PDFInfo
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- CN202869732U CN202869732U CN 201220355647 CN201220355647U CN202869732U CN 202869732 U CN202869732 U CN 202869732U CN 201220355647 CN201220355647 CN 201220355647 CN 201220355647 U CN201220355647 U CN 201220355647U CN 202869732 U CN202869732 U CN 202869732U
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- measurement device
- differential measurement
- guide rail
- axis translation
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Abstract
A surface burr differential measurement device mainly comprises a body, an X-axis translation guide rail, a Y-axis translation guide rail, a surveying pin, a pressure bar, a pressure gage, a sealing ring, a cylinder, a piston, a flange, an air pipe, a sealing plug, an excitation power supply, a U-shaped tube, a magnetic liquid, excitation coils, induction coils and a voltmeter. According to the surface burr differential measurement device, the work principle of a solenoid type differential transformer is adopted, wherein the core is variable mutual inductance, the magnetism and fluidity characteristics of a magnetofluid are utilized to realize the surface burr differential measurement, the measurement of micrometric displacement difference is realized through the change in mutual inductance of coils, and small shape changes within a range of a few microns can be accurately measured on the basis of high sensitivity and high linearity of the magnetic liquid and also on the basis of the flexible control over the tube size ratio of the cylinder and the U-shaped tube.
Description
Technical field
The utility model relates to a kind of surperficial burr differential measurement device, the surperficial burr differential measurement device of especially using based on magnetic liquid.
Background technology
Along with the development of modern science and technology, more and more higher to equipment precision requirement, and the size of surfaceness, the usability of mechanical component is had a great impact, the size of surfaceness can sharply affect the wearing quality of part.The surface is more coarse, and the effective contact area between matching surface is less, and pressure is larger, and wearing and tearing are just faster.In addition, the surfaceness of part also can affect fiting property stability, affect the fatigue strength of part, and the corrosion resistance of part etc.Along with modern science and technology to improving constantly that measuring technique requires, to little differential pressure sensor micro-flow measurement, reveal the high-acruracy survey occasions such as test, clean room monitoring, environmental sealing detection application more and more extensive.At present, displacement, pressure difference sensing measuring equipment mainly are two kinds of damp type and condenser types, owing to there is the accurate control problem of micron order strain films thickness, manufacture difficulty is quite large, homogeneity, the present situation of poor repeatability is developed a kind of low cost, high precision, excellent performance, reusable elementary errors sensing device and is had a good application prospect.In recent years, the researchist began magnetic liquid is studied both at home and abroad, and magnetic liquid has been widely used in magnetic fluid sealing, magnetic liquid damper, magnetic liquid sensor field now.And the research and development of magnetic liquid, for the research and development of elementary errors sensing device provide new opportunity, the monopolizing characteristic that relies on this material, can produce have high linearity, high sensitivity, high precision, simple in structure, cost is low and the magnetic liquid surface differential measurement device of the advantage such as long-life.But from present searchable domestic and foreign literature data, can find out, domestic also do not have the magnetic liquid elementary errors sensing device of practicality to succeed in developing, and existing research does not have accurate displacement setter, and it is significant therefore to develop a a kind of magnetic liquid surface differential measurement device with the precise displacement setter.
The utility model content
In order to realize the precision measurement of little deformation, micrometric displacement, the utility model provides a kind of surperficial differential measurement device, what adopt is the principle of work of solenoid type differential transformer, its core is variable mutual inductance, utilize the magnetic liquid physical efficiency to produce the character of induced field, change by ambient pressure and to do the time spent, the flowing of magnetic liquid, the variation of the coil mutual inductance that causes realizes the measurement of elementary errors.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of surperficial differential measurement device is comprised of precise displacement setter and differential measurement device two parts, mainly comprises fuselage, X-axis translation guide rail, Y-axis translation guide rail, surveyingpin, depression bar, tensimeter, O-ring seal, cylinder, piston, flange, tracheae, sealing-plug, excitation power supply, the U-shaped pipe, magnetic liquid, drive coil, inductive coil, voltage table, voltage output.
Described precise displacement setter is by fuselage, X-axis translation guide rail, and Y-axis translation guide rail, surveyingpin, depression bar, tensimeter, O-ring seal, cylinder, piston, flange, tracheae connects to form.It is characterized in that, described X, Y-axis translation guide rail is arranged on the fuselage, is used for realizing the fixing of workpiece, and the translation of position, on the Y-axis translation guide rail magnetic worktable is set simultaneously, be used for the absorption workpiece for measurement.Described surveyingpin measuring workpieces character of surface, by the depression bar compression cylinder, described depression bar one end is fixed in surveyingpin, and the other end is fixed on the piston by flange, so that depression bar when motion can drive piston and move up and down in cylinder.Described piston is provided with O-ring seal, can realize sealing and the accurately feeding of air pressure.Described piston is with the cylinder interior gas compression, and pressure gas is directed into the differential measurement device by tracheae.
Described differential measurement device is comprised of U-shaped pipe and metering circuit, mainly comprises sealing-plug, excitation power supply, U-shaped pipe, magnetic liquid, drive coil, inductive coil, voltage table, voltage output.Inject certain magnetic liquid in the described U-shaped pipe, magnetic liquid has superparamagnetism, uses magnetic liquid as magnetic core, can be so that magnetic field is more stable.Described U-shaped pipe two ends are close coaxial coil around two equal in length evenly, the number of turn of two Inside coils is N1, the number of turn of two external coils is N2, and the Inside coil at two ends is connected as drive coil, and the external coil differential concatenation at two ends is as inductive coil.Described U-shaped Guan Yiduan is connecting the precise displacement setter.Described metering circuit is comprised of exciting circuit and sensor circuit.Described exciting circuit is connected to form by excitation power supply and drive coil, and drive coil produces excitation field, utilizes the superparamagnetism of magnetic liquid in the U-shaped pipe, can be so that magnetic liquid produces stable magnetic field.Described sensor circuit is connected to form by inductive coil and voltage table, is used for the magnetic field induction of magnetic liquid generation in the U-shaped pipe by electric field, and measures the magnitude of voltage in the sensor circuit, thereby calculates the force value of input.
A kind of surperficial burr differential measurement device of the utility model adopts the principle of work of solenoid type differential transformer, its core is variable mutual inductance, the characteristics of utilizing magnetic fluid to have magnetic and flowability concurrently realize the measurement that infinitesimal displacement moves, high sensitivity and high linearity based on magnetic liquid, the elementary errors sensing device is simple in structure, accurately measures the miniature deformation in the micrometer range.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1 is the one-piece construction synoptic diagram of a kind of differential measurement device of the utility model.
Fig. 2 is differential measurement device detailed schematic.
As shown in Figure 1 and Figure 2, device structure mainly comprises fuselage (1), X-axis translation guide rail (2), Y-axis translation guide rail (3), surveyingpin (4), depression bar (5), piston (6), O-ring seal (7), flange (8), cylinder (9), tensimeter (10), tracheae (11), Z axis translation guide rail (12), differential measurement device (13).Wherein differential measurement device (13) comprises excitation power supply (14), sealing-plug (15), inductive coil (16), drive coil (17), magnetic liquid (18), U-shaped pipe (19), voltage table (20), voltage output (21).
Fig. 3 is the schematic equivalent circuit of a kind of differential measurement device of the utility model.
U1 is driving voltage among this figure, and U2 is induced electricity pressure reduction, and R1, R2, R3, R4 are the effective resistance of coil.
Embodiment
As shown in Figure 1, a kind of elementary errors sensing device of the utility model mainly comprises fuselage (1), X-axis translation guide rail (2), Y-axis translation guide rail (3), surveyingpin (4), depression bar (5), piston (6), O-ring seal (7), flange (8), cylinder (9), tensimeter (10), tracheae (11), Z axis translation guide rail (12), differential measurement device (13).Wherein differential measurement device (13) comprises excitation power supply (14), sealing-plug (15), inductive coil (16), drive coil (17), magnetic liquid (18), U-shaped pipe (19), voltage table (20), voltage output (21).
During work, at first slowly rotate swing handle at the fixing workpiece for measurement of Y-axis translation guide rail (3), under the certain pressure condition, use surveyingpin (4) contact surface of the work, move on the measuring head, drive on the piston (6) and move, the compressed gas gas in the jar is under the effect of O-ring seal (7) and piston (6), cylinder (9) internal gas pressure raises, and enters U-shaped pipe (19) so that gas is compressed through tracheae (11).
After the formation of the magnetic liquid (18) in the U-shaped pipe (19) certain altitude is poor, it is constant that cylinder (9) internal gas pressure keeps, because the sealing function of sealing-plug (15), the air pressure that is filled with in the U-shaped pipe (19) keeps constant and equals the interior air pressure of cylinder (9), and namely tensimeter (10) shows the atmospheric pressure value.Then, under the effect of excitation power supply (14), so that drive coil (17) produces induced field in magnetic liquid (18), inductive coil (16) induces electric field, voltage table (20) is measured the voltage difference that inductive coil (16) produces in sensor circuit, or by the voltage data output interface, the output data drawing list.
As shown in Figure 2, the schematic equivalent circuit of a kind of surperficial burr differential measurement device of the utility model, behind driving voltage U1 input stimulus circuit, after drive coil (17) energising, produce excitation field, magnetic liquid (18) as magnetic core, is utilized the superparamagnetism of the inner magnetic liquid (18) of U-shaped pipe (19), so that magnetic field is more stable.Inductive coil this moment (16) induces electric field from the excitation field that magnetic liquid (18) produces, analyze the change in displacement value that surperficial burr extruding measuring head produces by the induced electricity pressure reduction U2 that measures in the sensor circuit.
Claims (4)
1. surperficial burr differential measurement device, it is characterized in that: described measurement mechanism forms mechanism by several and connects to form, mainly comprise fuselage (1), X-axis translation guide rail (2), Y-axis translation guide rail (3), surveyingpin (4), depression bar (5), piston (6), O-ring seal (7), flange (8), cylinder (9), tensimeter (10), tracheae (11), Z axis translation guide rail (12), differential measurement device (13), wherein differential measurement device (13) comprises excitation power supply (14), sealing-plug (15), inductive coil (16), drive coil (17), magnetic liquid (18), U-shaped pipe (19), voltage table (20), voltage output (21), described surveyingpin (4) measuring workpieces character of surface, by depression bar (5) compression cylinder (9), described depression bar (5) one ends are fixed in surveyingpin (4), and the other end is fixed on the piston (6) by flange (8), so that depression bar when motion can drive piston and move up and down in cylinder, twine described one group of drive coil (17) at described U-shaped pipe (19), and twine respectively one group of described inductive coil (16) at described U-shaped pipe (19) two ends, connected in described drive coil (17) two ends described inductive coil (16) two ends differential concatenation by wire.
2. a kind of surperficial burr differential measurement device as claimed in claim 1 is characterized in that: on the Y-axis translation guide rail (3) magnetic worktable is installed.
3. a kind of surperficial burr differential measurement device as claimed in claim 1 is characterized in that: be filled with a certain amount of described magnetic liquid (18) in the described U-shaped pipe (19).
4. a kind of surperficial burr differential measurement device as claimed in claim 1, it is characterized in that: described voltage table (20) connects two described inductive coils (16), be used for measuring the voltage difference at described inductive coil (16) two ends, thereby calculate the change in displacement value of input, connect simultaneously described voltage data delivery outlet (21) output voltage and change chart.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220355647 CN202869732U (en) | 2012-07-19 | 2012-07-19 | Surface burr differential measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220355647 CN202869732U (en) | 2012-07-19 | 2012-07-19 | Surface burr differential measurement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202869732U true CN202869732U (en) | 2013-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220355647 Expired - Fee Related CN202869732U (en) | 2012-07-19 | 2012-07-19 | Surface burr differential measurement device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202869732U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109387178A (en) * | 2017-08-10 | 2019-02-26 | 波音公司 | Burr detection system and method |
| CN111006574A (en) * | 2019-11-15 | 2020-04-14 | 山东科技大学 | Equipment and method for measuring displacement of roadway wall part |
-
2012
- 2012-07-19 CN CN 201220355647 patent/CN202869732U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109387178A (en) * | 2017-08-10 | 2019-02-26 | 波音公司 | Burr detection system and method |
| CN111006574A (en) * | 2019-11-15 | 2020-04-14 | 山东科技大学 | Equipment and method for measuring displacement of roadway wall part |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20140719 |
|
| EXPY | Termination of patent right or utility model |