CN1072778A - Static unbalance measuring device - Google Patents
Static unbalance measuring device Download PDFInfo
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- CN1072778A CN1072778A CN 91107942 CN91107942A CN1072778A CN 1072778 A CN1072778 A CN 1072778A CN 91107942 CN91107942 CN 91107942 CN 91107942 A CN91107942 A CN 91107942A CN 1072778 A CN1072778 A CN 1072778A
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Abstract
The present invention relates to the test count device, be used to measure the static unbalabce of the pancake object of symmetrical geometry.It is made up of three sensors, computer digit disposal system, step disk, register pin and frame.Measured workpiece is lain on the step disk, because the step disk bottom surface contacts with the spheroidal contact of three sensors, sensor passes through the computer digit disposal system with the signal of gathering, the just direct instantaneous degree of unbalancedness that demonstrates this workpiece.The present invention is simple in structure, and the precision height is easy to use, low cost of manufacture.
Description
The present invention relates to the measurement count device, be used to measure the static unbalabce of the pancake object of symmetrical geometry.
At present, to emery wheel, flywheel, high gear, rotor, the measurement mechanism of the static unbalance of workpiece such as aircraft or propeller peculiar to vessel, the forms such as guide tracked, rotary and pendulum-type that mainly contain that domestic production producer makes, measured workpiece will rotate or swing when measuring, thereby efficient is low, and precision is low.Chinese patent 87203748 disclosed disequilibrium survey devices belong to rotary measuring instrument.That is: workpiece is fixed on the turning axle, relies on the amplitude of turning axle to come image data, be difficult for measuring unbalanced position, efficient is low.The static unbalance measuring instrument that the efficient of domestic use is higher, it is the U.S. Miro-Poise house journal product of making by Japan, this device is to develop from the oscillating rod type equilibrator, its balance disk and cramp bar are rigidly connected, the flexural deformation of dependence cramp bar causes the angle of inclination and the direction of balance disk, by complicated differential pick-up acquired signal, show the degree of unbalancedness of measured workpiece after the Computer Processing then.Because this measurement only material property and the mismachining tolerance of used cramp bar all can influence measuring accuracy, so the manufacturing accuracy requirement is high, complex process, costing an arm and a leg reaches 150,000 dollars.
Jap.P. 810110 JPU51816 disclose a kind of disc-like articles unbalancing device.Its principle is: three cantilevers all are fixed on the frame, the cantilever other end is respectively installed a load sensor, and requires to be fixed on predetermined equidistant measuring position, promptly forms one and measures circle, it is tangent with the measurement circle that cantilever extends the back, and vertical with the sight line at measured object endoporus center.The data that load sensor is gathered draw the degree of unbalancedness of testee after device calculates as calculated.Though this device adopts the direct image data of load sensor, does not possess complete data handling system.Adopt the cantilevered labyrinth, can produce distortion after its cantilever carrying and influence the position and the verticality of sensor.Therefore, all there is strict relative position requirement at cantilever position, measurement circle and measured workpiece endoporus center, make installation accuracy and require height.Moreover cantilever is fixed on the frame, and sensor is to be fixed on the cantilever, and measured workpiece relies on centring means to locate, and determines the relative position of workpiece and sensor indirectly.Therefore, will influence workpiece and the concentricity of measuring circle, the cumulative errors of generation influence measuring accuracy.External above two kinds of patented products all are static instantaneous measurements, but intermediate link is many, easily produces cumulative errors.The measurement mechanism complex structure, the requirement on machining accuracy height.
The object of the present invention is to provide a kind of simple in structure, make easy to use, the precision height, directly moment shows the static unbalance measuring device of measured data, its measured workpiece is quiet to be placed on the step disk, and measurement mechanism is not done relative motion, or relies on distortion to come image data.Tested parts directly rely on register pin to determine relative position between workpiece and the sensor, reduce the cumulative errors that produce because of intermediate link.
For achieving the above object, the present invention adopts solution to be: this static unbalance measuring device comprises three tension and compression load and weighing cells, frame, Horizontal Branch tray, register pin, measured object jacking gear and the computer digit disposal system that is connected with sensor.Fix three sensors on the predetermined measurement circumference of frame, establish a location pin-and-hole on the frame, the dowel hole center is concentric with the measurement center of circle, and the Horizontal Branch tray is sleeved on the register pin, and its bottom surface contacts with the spheroidal contact of three sensors.
Rack-mounted register pin is spheroid form for one section, and sphere contacts with dowel hole, and three spheroidal contacts of its ball centre line and sensor are on same surface level, and the register pin other end passes step disk, as the locating device of measured workpiece.For the ease of placing heavier measured workpiece, jacking gear has been installed in frame lower.
The invention will be further described below in conjunction with accompanying drawing.
The structural representation of Fig. 1 static unbalance measuring device
Fig. 2 locating pin structure synoptic diagram
Fig. 3 computer digit disposal system block diagram
Among the figure: 1 frame, 2 jacking gears, 3 measured workpieces, 4 register pins, 5 Horizontal Branch trays, 6 sensors, 7 hoist cylinders
At frame three sensor localization circular holes of processing and a dowel hole, be used for fixing respectively three sensors and alignment pin are installed. Require the axial line vertical level of three sensors, three locating holes are on predetermined measurement circumference, dowel hole is positioned at the center of measuring circle, alignment pin and pin-and-hole sphere-contact, and pass the horizontal supporting dish, as the positioner of measured workpiece, guaranteed that measured workpiece, measurement are justified, the supporting disk three is concentric. When measured workpiece is placed on the supporting disk, sensor just can directly be gathered measuring-signal, through amplifying circuit and compensating circuit, and A/D conversion block, the automatic display measurement result of interface circuit, computer and display.
Advantage of the present invention:
(1) this apparatus structure is simple, and processing and manufacturing is easy, and cost is low, is applicable to the static unbalabce of measuring the symmetrical pancake object of different size shape.
(2) precision height adopts an alignment pin, guarantees that measured workpiece, measurement are justified, horizontal supporting dish three is concentric. The direct collection signal of sensor, the certainty of measurement error that mismachining tolerance and indirect image data because of cramp bar or cantilever cause has been eliminated in the U.S. and the Japan Patent in rigidity contact.
(3) the direct instantaneous video data of energy, the efficient height, versatility is good, and is easy for operation.
Embodiment:
Measure the straight-type wheel of 0.5～25Kg, precision 0.8rgcm adopts three general tension and compression load and weighing cells, and model is a MHR-2 type resistance strain weighing transducer, specification 10Kg,
Step disk material: carbon constructional quality steel.
Register pin material: T
O
Frame material: angle steel or No. 45 steel
Measuring circular diameter is φ 60mm
The testee emery wheel is located with endoporus
Measuring process:
(1) measures preceding computing machine and return to zero, eliminate temperature and power supply, the caused signal drift of voltage, eliminate the degree of unbalancedness that machine itself causes from normal moveout correction.Promptly the signal before measuring is deposited in computing machine, wait to be measured.
(2) after being placed on emery wheel on the jacking gear, oil cylinder drives jacking gear and descends slowly, and emery wheel is put down gently on supporting disk, is sleeved on the register pin.
(3) with locating device emery wheel is felt relieved.
(4) sensor acquisition signal, by amplifying circuit, A/D converter.Interface circuit input Computer Processing.The out-of-balance force distance and the angle that show tested emery wheel.
(5) after the measurement, jacking gear is mentioned emery wheel, changes emery wheel and waits for measurement next time.
Claims (2)
1, a kind of static unbalance measuring device, comprise frame 1, three tension and compression load and weighing cells 6, Horizontal Branch tray 5, register pin 4, jacking gear and the computer digit disposal system that is connected with sensor is characterized in that fixing three sensors on the predetermined measurement circumference of frame, and the dowel hole that is provided with on the frame is concentric with the measurement center of circle, step disk is sleeved on the frame register pin, and its bottom surface contacts with the spheroidal contact of three sensors.
2, static unbalance measuring device according to claim 1, it is characterized in that register pin is spheroid form for one section, its sphere contacts with the frame dowel hole, and three contacts of ball centre line and sensor are on same surface level, and the register pin other end passes step disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91107942 CN1072778A (en) | 1991-11-30 | 1991-11-30 | Static unbalance measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91107942 CN1072778A (en) | 1991-11-30 | 1991-11-30 | Static unbalance measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1072778A true CN1072778A (en) | 1993-06-02 |
Family
ID=4908941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91107942 Pending CN1072778A (en) | 1991-11-30 | 1991-11-30 | Static unbalance measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1072778A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6942916B2 (en) | 2001-01-11 | 2005-09-13 | Hewlett-Packard Development Company, L.P. | Inkjet printable electroluminescent media |
-
1991
- 1991-11-30 CN CN 91107942 patent/CN1072778A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6942916B2 (en) | 2001-01-11 | 2005-09-13 | Hewlett-Packard Development Company, L.P. | Inkjet printable electroluminescent media |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |