CN87202304U - Optical fiber, laser detector for surface-roughness - Google Patents
Optical fiber, laser detector for surface-roughness Download PDFInfo
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- CN87202304U CN87202304U CN 87202304 CN87202304U CN87202304U CN 87202304 U CN87202304 U CN 87202304U CN 87202304 CN87202304 CN 87202304 CN 87202304 U CN87202304 U CN 87202304U CN 87202304 U CN87202304 U CN 87202304U
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- optical fiber
- roughness
- laser
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- utility
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Abstract
The utility model discloses an optical fiber, laser detector for surface-roughness which measures the roughness of the workpiece surface. The energy in the center of flare is changed into electrical signal displayed by figures through a photoelectric conversion, light from the laser source is reflected on the workpiece surface through fiber optic transmission. The detection range is that the inner workpieces and outer surface is above 2. tif, hole diameter is above phi 3 mm and depth can reach 10m. The utility model can be used on various fittings and cylinder blocks.
Description
The utility model is that optical fiber, laser surface roughness instrument are the instruments that is used for measuring roughness integrated value and smooth finish grade.Be particularly useful for the detection of deep hole inside surface roughness.
The roughness ocular estimate of past measurement work piece inner surface can only be judged qualitatively, varies with each individual, and efficient is extremely low, again less than the numerical value of roughness.Electronic profile detector afterwards is the oral area of energy measurement deep hole only also.Depth capacity can not be above 1 meter.For the explicit value of the roughness that obtains deep hole, workpiece must be dissected the back and measure, cause waste.
Existing " laser smooth finish detector " succeeded in developing by the dynamo-electric designing institute in Shenyang City.People such as Yang Xianglun are published in " application of electronic technology " magazine in 1983 the tenth phases.It can only measurement plane and the above outer garden of the grinding cylinder of φ 10mm.
Be to measure inside surface smooth finish by " QG-1 laser bore smooth finish instrument " its advantage of building the common development of machine tool plant and Yunnan Optical Instruments Factory.But the smooth finish of the outside surface that it can not measuring workpieces, and only be applicable to the aperture at φ 7.62mm, length is on the bore of 380～460mm.
Above-mentioned two kinds of instruments have all adopted hot spot, with the ratioing technigue of scattering light belt energy.Be subjected to the influence of its principle, not energy measurement
7Following smooth finish.
The purpose of this utility model is to overcome above-mentioned instrument and uses upward monistic shortcoming, accomplishes the equal energy measurement of surfaces externally and internally.And changed " QG-1 bore laser smooth finish instrument " only situation of a kind of gun barrel of energy measurement.
The utility model mainly is made up of stabilized current supply (1), laser tube (2), incident optical (3), measuring head (4), reception optical fiber (6), photoelectric commutator (7), data processor (8), digital indicator (9).
Usually " laser smooth finish detector " is the ratioing technigue that utilizes the energy of the energy of hot spot and light belt.Only can survey
7Arrive
14Smooth finish.Right
7Following smooth finish instrument is in the blind area.
The utility model principle is to measure the energy of spot center.VOl27 according to article " scattering-a kind of simplification statistical model of laser beam on the diffusing surface " Acta Physica Sinica of the Cheng Lu of department of physics of Nankai University, NO6,1978, P659 is shown in Figure 9: the intensity of reflected light of spot center is to the maximum more than the 0.2um promptly at smooth finish mean value
13When following, the light reflection strength is normal value, and it is infeasible therefore adopting the spot center reflection strength to measure smooth finish.
The utility model has adopted optical fiber to do to make the loss of luminous energy very little, and make incident light almost parallel with reflected light in detection place, thereby receive maximum light intensity after the transmission, has realized
6Extremely
14Detection.
The utility model adopts the power supply of 220V power supply, it behind voltage stabilization and current stabilization the 6328mn laser beam, be incident in the detection surface through Optical Fiber Transmission by mechanical type measuring head fixed vertical, after the measured surface reflection, imported in the roughness display by opto-electronic conversion, data processing by vertical the reception again.
The utility model also is equipped with the digital indicator of smooth finish except that the display that roughness is housed shows the roughness integrated value, show simultaneously.So be the new standard of applicable national roughness, applicable again country is about the old standard of smooth finish.
The utility model mechanical probes is carried out on being contained in sounding rod the static measurement, also can be contained in the enterprising action attitude of the thorax bar that bores the thorax bed and measure.
The utility model resolution is that 0.01um can make
6～
14Clear and legible.Measurement range: the aperture is more than φ 3mm, and hole depth is below 10m.Instability is 6% relatively.
The utility model accompanying drawing 1 is a theory diagram.
(1). stabilized current supply, (2). he-ne laser tube, (3). incident optical, (4). measuring head, (5). measured workpiece, (6). mirror based fiber optica, (7). photoelectric commutator, (8). data processor, (9). display.
Embodiment:
It is that he-ne laser tube, phase step type optical fiber, mechanical type measuring head, the silicon photocell of the mVA pointer display of making opto-electronic conversion, 4 1/2 bit digital displays and 5V200mA etc. assembles that the utility model adopts stabilized current supply, output power.With smooth finish sample piece instrument is demarcated.The actual measurement inwall is that the hydraulic cylinder of φ 100 compares measurement with the model of demarcating with Other Instruments, comes to the same thing.
Claims (3)
1, a kind of optical fiber, laser surface roughness instrument are made up of stabilized current supply [1], laser tube [2], measuring head [4], photoelectric commutator [7], data processor [8], display [9], it is characterized in that:
Laser tube is furnished with stabilized current supply in addition, with light transmitting fiber [2] transmission luminous energy, only receives the reflected energy of spot center again with light transmitting fiber [6].
2, it is characterized in that also being equipped with on the instrument panel display of smooth finish grade according to the described optical fiber of claim 1, laser surface roughness instrument.
3, it is characterized in that being contained on the thorax bar that bores the thorax bed according to right 2 described optical fiber, laser surface roughness instrument at the measuring head that has optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87202304 CN87202304U (en) | 1987-02-25 | 1987-02-25 | Optical fiber, laser detector for surface-roughness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87202304 CN87202304U (en) | 1987-02-25 | 1987-02-25 | Optical fiber, laser detector for surface-roughness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87202304U true CN87202304U (en) | 1988-03-02 |
Family
ID=4818471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87202304 Withdrawn CN87202304U (en) | 1987-02-25 | 1987-02-25 | Optical fiber, laser detector for surface-roughness |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87202304U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100344959C (en) * | 2004-08-28 | 2007-10-24 | 中国海洋大学 | Device and method for checking quality of fibre-optical |
| CN103292747A (en) * | 2013-05-20 | 2013-09-11 | 北京大学 | Method and device for measuring surface roughness of side walls of FinFET (fin field-effect transistor) devices |
| CN110549233A (en) * | 2019-09-30 | 2019-12-10 | 重庆九方铸造有限责任公司 | Laser sensing stop device for camshaft grinding |
-
1987
- 1987-02-25 CN CN 87202304 patent/CN87202304U/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100344959C (en) * | 2004-08-28 | 2007-10-24 | 中国海洋大学 | Device and method for checking quality of fibre-optical |
| CN103292747A (en) * | 2013-05-20 | 2013-09-11 | 北京大学 | Method and device for measuring surface roughness of side walls of FinFET (fin field-effect transistor) devices |
| CN103292747B (en) * | 2013-05-20 | 2016-03-02 | 北京大学 | A kind of method and device measuring FinFET side wall surfaceness |
| CN110549233A (en) * | 2019-09-30 | 2019-12-10 | 重庆九方铸造有限责任公司 | Laser sensing stop device for camshaft grinding |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |