Some standard content:
People's Republic of China
National Metrology Verification Program
Spherometer Sample
JJG 465—86
Trial Verification Procedure for Spherometer Sample
Yeri featian Reg af
SpherometrSpeeial-Gaugo
Verification Procedure was approved by the State Bureau of Statistics on December 15, 1977, and has been in effect since October 1, 1987. The responsible unit, the drafting unit, is Xiebei Metrology
Chaobei Metrology Testing Institute
The regulations and provisions are explained by Huang Fang, the drafting unit. The main editors of this procedure are Youping (Chaobei Metrology Testing Institute) and You Institute (North-South Metrology Testing Institute).
Technical requirements
|Qualification conditions of cold items
Testing methods
Testing station results and signing period
JJC463-86
Testing procedures for the trial selection of ball diameter gauge samples
This procedure is suitable for the test of the newly manufactured, used and in-service ball diameter gauges
ball curve and plate (hereinafter referred to as sample plate) old precision spherical curvature single curve meter standard instrument: used for the comprehensive error of the speed setting and the measurement of the semi-lightest ring, the sample plate is divided into concave spherical sample and convex spherical sample, 1 is a spherical convex sample plate, Figure 2 is a class convex support plate, Figure 3 is a two-type four-type sample plate, and the four convex support plates should be selected in pairs. RahC
The shape of the sample is shown in the table! 。
Detailed green surface
4 Optical certificate
Blue According to technical requirements
JJG 465—86
23+ 0-6
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128+0.8 -
1 The material of the sample should be colorless optical technology K, or E, and the requirements for materials are: bubble degree is 6 grade, the instrument is 2 sharp B grade, and the double refraction is 2 class. The optical number must meet the requirements of 03-6 "full", 2 appearance
2, 1 The polished surface of the new and after-work samples shall not have defects such as collision, wear, etc. The samples in use are allowed to have defects that are not affected by the above-mentioned inspection and screening of optical difficulties and the standard of the plate, 22 The double-type sample core should have a protective chamfer
2.3 The sample should have the required nominal semi-light and group number. 3
For the newly manufactured Lixiu Tongjian sample return batch test disease does not exceed the current number of samples in Table 2 for the world to use the sample core is allowed to have no color La observation case light diagram number and paired with appearance containing when the light damage and the design disease,
465-88
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Total #
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() does not change, the length of the plate should not exceed 0,
4 The original length of the coated plate should not exceed 0,3,
5 The spherical shape of the plate
Four I learned, the actual measurement results should not be expressed in the evil requirements.
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6 balls out of the prison half of the inspection limit error should not exceed 4 before the request #8 page 4
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JJC465—88
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Inspection items and inspection cases
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8 the overflow double in the inspection room should be 201℃ , the humidity in the room shall not exceed 0.3 per hour, the sample shall be measured in the calibration room for not less than 51 hours, and the time for the temperature in the calibration room shall not be less than 24 hours. The time for the temperature in the calibration room shall not be less than 45-8%. 9. External splashing. Visual observation. 10. Surface. 4. Verification method. During the verification, a color curtain shall be used as the background or a light source. A suitable white lamp of 1W or above shall be used for illumination for a period of 4-6 hours. The light of the sample shall be observed again for 4-6 hours. The roundness shall be verified by a spherical sample with a meter. The verification shall be carried out on two perpendicular sides of the sample (as shown in Figure 4). Both sides shall comply with the requirements of this regulation. 12. The spherical shape error shall be determined by a fluorescent lamp as the light source. Place the concave rod on the relatively convex sample. On the board, when the edge color is gray after the dynamic training, the light pattern name can be determined according to the middle mouse color according to the installation 6
The same part of the light pattern is used to measure the effect of the irregular service share on the smoothness (e) and the ratio of the spacing between two adjacent stripes (FF). As shown in Figure 5, W6/-0.2
The gap between the light pattern and the gap is blue
Read the original
I day page 6
JIG455-86
When testing △V, the required conditions are 35, and the position of the test object is vertical to the test object, and the Vano light output number and the optical image are used to distinguish the difference between the two methods 283.-81 "Optical Zero Surface Shape Test Method" in the Bumei product phase determination method.
13 The radius of the ball
|For samples with a radius of 5~25cm, the radius of curvature of the convex sample is calibrated + the radius of curvature of the spherical sample with a nominal semi-light weight of 100Umm, and the radius of the four samples is calibrated. 13.1 Use 3-grade display, and use a real optical meter to calibrate the spherical fence with a radius of 5~30m. Use a dry point to measure the grams of the sample being tested and make the combined value less than 6. The block is placed between the workbench and the test period, and there is no need to think about the whole work! The work rate should not exceed 3. After the work is done, the scale must be aligned with the workbench in the positive direction with a light tube and a micro-lubricated standard nail to align the scale as much as possible with the zero position. Then select the middle of the sensitive plate and read the position from the reading. It is done on the same side of the sample plate, and the diameter of the line is obtained. It can be calculated by the following formula:
1-(I, -a +i++t, +t, (mm)
Wu Xiao:
The measured value of the diameter between the middle and the railing (m)
The sum of the actual diameter of the plate (mm)
G465-86
,,,,,The number of nuclei at five positions (m), the curvature radius of the sample is calculated as follows:
Calculate the R of the mountain. The difference between the lowest and the measured radius should not exceed the provisions in Table 1, 132 and then the spherical surface is only tested for half The sample with a diameter of 5B~1000mm is first mounted on the bracket of the instrument, and roughly positioned, the instrument is adjusted to the working state until 3~4 straight lines appear in the field of view. At this time, the first position of the measured part, which is the position where the sphere center of the measured part and the sphere of the standard surface coincide with each other, is recorded from the reading device for the first reading, and the second position is the position of the measured device pre-point. There are two examples as follows:
a, the curvature radius of the standard surface of the lens is shorter, and the upper sphere center is located within the measuring range of the scale. In this case, the vertical vertex of the measured surface coincides with the sphere center of the standard surface (the judgment is still based on the appearance of 3~4 straight lines in the field of view), and the second reading is recorded from the reading device. The difference between the two readings is the curvature value of the measured surface (taking the convex sample as an example as shown in Figure 6,
h, the radius of the lens standard is larger or the standard surface is convex, The center of the ball is outside the scale. In this case, move the longitudinal scale plate to make the measured surface close to the standard surface. Tightly turn the longitudinal micro-hand wheel to make the measured surface close to the standard surface, and observe the movement of the projected scale line. When the scale line moves, it means that the measured surface and the standard point are just right (the sample is called the extreme point 7), record the second reading from the reading device, and calculate the half value of the sample plate according to the following formula Rg.Ral [aa, (nmm)
R,-—Radius value of the sample (mm);
in the figure:
actual value of the nominal curvature diameter (mm)
, - is divided into the readings on the first and second digits (mm), in formula (3), the plus sign between the two absolute values, the minus sign is taken for convex measurement, and the plus sign is taken for concave measurement, and the difference between the converted R value and the nominal diameter should not exceed the provisions in Table 1,
a total of 8
first
investment index
JG 46586
5. Handling of verification results and verification period
14. The verification certificate of qualified samples shall be issued. The verification results shall be notified for each sample. For unqualified samples, a verification result notice shall be issued. And the unqualified samples shall be noted:
15. The verification period of samples shall be determined according to the usage and shall not exceed one year. Special note:
This verification regulation is determined by the National Length Verification Process Approval Committee.
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