Some standard content:
National Verification Regulations of the People's Republic of China JJG31-1999
Height Caliper
Issued on October 18, 1999
Implemented on March 15, 2000
Issued by the State Administration of Quality and Technical Supervision
Main drafters of this regulation:
Wang Caijue
Additional drafters:
Liu Zhengnan
JJG31-1999
(Lingyou Provincial Metrology and Testing Institute)
(Lingxi Provincial Metrology and Testing Institute)
(Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences) 1 Overview
2 Verification items and verification conditions
JJG 31—1999
2.1 Verification items of height caliper 2.2 Verification conditions 3 Technical requirements and verification methods 3.2 Interaction of various parts Relative position of various parts Width and width difference of scale marks: Surface roughness of the measuring surface and the base surface Thickness of the measuring surface and the base surface Surface roughness of the measuring surface and the base surface Surface roughness of the measuring surface and the base surface |Dimensional variability of both measuring surfaces for height measurement
Parallelism when the measuring surfaces are on the same plane as the base
Zero position correctness
Variability of indication
Indication stability of mathematical display
Indication error
4 Processing of verification results and verification cycle
Processing of verification results
Verification cycle
Verification Regulation of Height Caliper
G 31—159
JIG 31—1999
Replaces JIG 31—1987
JJG286—1982
This regulation was approved by the State Administration of Quality and Technical Supervision on October 18, 2001 and came into force on January 15, 2000.
Responsible unit: National Technical Committee for Metrology of Geometric Engineering Parameters; Drafting unit: Shaanxi Institute of Metrology and Testing; Drafting unit: You'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences. This standard is entrusted to the National Technical Committee for Metrology of Geometric Engineering Parameters for interpretation. IIG31—1999
Verification procedure for height calipers
This standard is applicable to the verification of calipers with graduation values (components) of 0.01 mm, 0.02 m, 0.05 mm and 0.10 rm, and a measuring range of 1: limited to 2 000) mm, which are newly manufactured, in use and after static treatment. 1 Overview
Height calipers are measuring tools used to measure the relative position and precision of the surface of workpieces. Their main structural types are vernier height gauges (as shown in Figure 1), electronic digital height gauges (as shown in Figure 2), standard height gauges (as shown in Figure 3) and counter-type national standard commercial calipers (as shown in Figure 4). Figure 1 Vernier height caliper
1 Original: 2 Marking: 5-Vernier scale: 4-Measurement: 5-Micro-motion setting: G-Fastening screw: 7-Height: 8-Natural scale 2 Verification items and calibration conditions
2, 1 Vernier height caliper The main verification items and calibration conditions of height calipers are height calipers. The main calibration tools of the calibration items are listed in Table 1: 2
J heart 31-10y
Figure 2 self-number high spot,
1 one: 2 one light you measure suction 53-ruler 14 one number of dynamic file set 5 certain bone: 6 clear training class: 7 one effective amount of small string: 8-fixed shock order figure 3 read standard business width ruler
≥ one bed weight: 2-stroke potential ruler: 3 ruler constant; 4 perturbation device quantity: 5 garden ruler: -suffering meter careful number of parts: -main ruler hall number
calibration flow
interaction of each part
relative position calculation of each part
J. heart 31—1999
Figure 1 Calculation data type circular standard commercial caliper
1 Delivery seat: 2. Scratch the original pressure; 3 into the ruler: 4 feet cabinet one handle - square meters activity
Main age determination month
Newly made
Mark the placement and width of the mark
Blood is constantly plated and sick and sits down and
The surface of the surface is the most precise
Line is the thickness
Measure the blood and the bottom of the bottom and
1 Flatness
County Niwei
Surface twist comparison sample
Ruler or work is Level
0,1 grade" - hundred feet
Calibration category
In use
Repair station
Calibration items
Measurement of height and distance between two measuring planes
It does not measure the parallelism when facing the working surface of the base
Zero position correctness
Small approximate variability
Indication value determination of digital display
Indication error
JJG31-1
Main wheat peach fixed interest
Two-point ruler, the allowable error is
0.001 nm without micrometer
1 lack of flat camera, the scale is
center 0.002 mm bar on the scale
1 level flat plate
3 level or 6 level block, 1 level flat light
3 level or 6 level single block, 1 fluffy particle
Note: "small" here means symptom test,
"one" means optional,
2.2 Calibration conditions
2.2.1 The temperature in the calibration room shall be (20±3)°C
2.2.2 The relative humidity in the calibration room shall not exceed 8%. Newly made
calibration equipment
fast month·tt||after repair
2.2.3 Before calibration: the height caliper and other calibration tools shall be placed on the plate 1 at the same time. The time for equilibration to temperature is shown in the table? Provisions
Measurement range [m]
>300 - 500
>500--2 000
Technical requirements and specification methods
3.1 Visual
3.1.1 Requirements
Flat surface temperature response time (h)wwW.bzxz.Net
For flat plate:
Jr.31—1999
3.1.1.! The height caliper shall be made of a layer of material, with a glossy surface, scale marks and counters, and shall be clear and transparent. There shall be no damage, silver peeling and crystal scratches, no obvious breakage or uneven thickness, etc., and no external quality defects: 3.11.2 The height caliper must have the manufacturer's name or the starting and graduation value marks! 3.1.3 After use and repair, the high-sensitivity scale is allowed to have a reading drop that does not affect the accuracy of use. 3.1.2 Verification method: Six,
3.2 All parts are used in accordance with the requirements
3.2.1 Requirements
3.2.1.1 The rod moves along the scale body to the sense, and there should be no white and heavy sliding. The digital display should be clear, black, light spots and flashing. The working efficiency and working speed of each sensor should be guaranteed. 3.2.1, 2 The work of the needle should be complete, and the time of installation should not exceed 4 revolutions. The work after repair should not be reversed.
3.2.2 Verification method: oral observation and test. 3.3 Extension call
3.3.1 Requirements
3.3.1.1 The distance from the vernier scale mark to the main scale mark should not exceed 0.30 nm. 3.3.1.2 The pointer tip of the same scale should cover 3%: -80% of the length of the short mark. The difference between the lower end of the needle and the surface of the scale mark should not exceed 0.7 in Table 3.3.2 Verification method: Observe or compare with a ruler: 3.4 Width and width of small mark 3.4.1 The width and width of the scale mark of the vernier height caliper and the indicator height caliper should not exceed 4.3.4.11 The width of the scale mark and the round scale mark of the vernier height caliper should be [.1[13.4.1.2] 0.20) mm: The width of the bottom is 62 mm and the bottom is 0.04 mm. 4
Standard research
0.08.0.18
Standard scale width change
3.4.2 Film method
M;31-19
Month, for microscopic verification, the main scale, the vernier scale, and the medical scale shall each have at least one mark. The width difference of the mark shall be determined by the difference between the maximum and minimum widths of the test mark: 3.5 The surface roughness of the base and the working surface of the base shall not exceed the requirements of Table 5. Table 5
Grade quality value (points) n)
c.0i,0.02
Positive measurement certificate
Table national recruitment degree R (am)
Base two surfaces
Verification method: The roughness of the two surfaces is compared with the sample block. 3.5.2
Special line thickness required
Requirement: The 1 degree of roughness under load is (0.150.05) mm3.6.2: Inspection method: The driver's tool microscope is used to compare and verify in half a grid. 3.7 feet measure the front and bottom planes of the work 3.7.1
Requirement: It should not be greater than the provisions of Table 6
German standard field
>1 000 --2 000
Length of the base
: Low 1mm range, West,
3.7.2 Verification method
The plane of the base working surface
Use a ruler to measure the surface with a level ruler, and the base working surface is verified by a level ruler using the light following method. The long side, short side and diagonal position of the measuring surface and the base working surface are respectively measured: The horizontal direction is determined according to the gap situation of the equipment position: When all the sentences appearing on the verification methods are in the middle or at the two ends, take the middle position. The measurement is done by the person in the middle, and there is a gap between the two parts. The sum of the images in the middle and at both ends is used to determine the size variability of the height measurement. 3.8.1 Requirements
For newly manufactured height calipers, the height measurement size should be an integer, so that the height caliper and the repaired height caliper have full validity. LIG31-1999
The integer of the height caliper graduation value, the size variability between the two measurement surfaces should not be greater than the provisions of Table 7! Tai 7
Graduation value (resolution)
0.01.0.02
3.8.2 Verification method
Height measurement is not! Dimensional deviation
Height measurement is used to determine the dimensional variation or stability of the two measuring surfaces. 003
Height measurement is used to determine the dimensional deviation of the scale. The dimensional variability between the two measuring surfaces is determined by the micrometer with an allowable error of 0.001mm. The variability is determined by the difference in the minimum and maximum dimensions. 3.9 The parallelism of the jaws when the working surfaces of the base are in the same plane 3.9.1 Requirements: It should not be greater than the specified table 8
scale force (fin force)
0.01, 0.02
0.05. 0.10
3.9.2 Verification method
On the parallel plate
height caliper on the same level as the base working surface, move the caliper machine to make the measuring surface of the measuring claw contact with the parallel stop band, and use the rod down scale with a difference of 0.002mm to calibrate, as shown in Figure 5: Hongshe Valley Record
3.10 Zero position accuracy
3.10.1 Requirements
JI:31—1299
3.101,1 When the measuring surface is half-contacted, the "zero" mark and "tail" mark on the center of the scale should correspond to the main scale And more in line with: its weight and limit accuracy are as specified in Table 9, Table 9
graduation value
" " mark weight
" N" mark year synthesis
3.10, 1.2 single low measurement and the pointer of the mark should be located directly above, at this time, the millimeter reading part of the main scale "evil" mark is still high and not wide, the limit is not more than 2 marks of the poor sequence. 3.10.2 Calibration point method
This is the upper scale on the 1st level plate: move the fire sample, measure the edge of the guard surface and the flat plate with the core (if there is a micro-movement avoidance device installed), and observe it carefully under the flow condition of the scale being tightened and loosened separately. When necessary, the microscope is used for calibration.
3.11 Vertical variability
3.11.1 The height of the vernier scale and the scale should not exceed 12 of the scale value. The scale should not pass through the high pressure before the digital display.
3.11.2 Calibration method
Under the same conditions, move the person in any position and make the measurement with the block or tablet hand 10 and read the value: the maximum and minimum values of the display are correct.
3.1.1 Requirements: 1 h is not more than 0.1 rm: 3.12.2 Determination method
The Japanese side observes that the ruler is tightened at any position within the measurement range. The change in h flash is not greater than the specified value.
3.12 Indication error
3.13,1 Double requirement, should not exceed 1 toughness
3.13,2 Determination method
Use 3 or 6 equal blocks to calibrate on a 1-level plate, the distribution of the inspection points, for the size range, use a height caliper within 300mm, not less than the hook points, such as a 3m height caliper, the inspection points are 101,30mm1, 201.60m, 291.90mm or 101.2(lmm, 201.5mm, 291.80n: For a size range of 100mm, use a height caliper of 300ru, less than 6 points evenly distributed, such as (-0):nm height caliper: the inspection points are 80 trlm,161.30 mm,240 nm.321.6ij mm,400 mm:491.90 mm 8n m,161.20rm,2401:m,321.50nm,400mm,1y1.mYl zero check point segmentation is based on actual standard 82 Verification point method
This is the upper scale on the 1st level board: move the fire sample, measure the side surface and the flat plate (if there is a micro device installed, it must be used to avoid movement), and observe it under the flow condition of the scale. When necessary, the microscope is used for verification.
3.11 Vertical variability
3.11.1 The height of the vernier scale and the group scale should not exceed 12 of the graduation value. The scale should not pass through the high pressure in front of the digital display
3.11.2 Verification method
Under the same conditions, move the sample, and make the measurement and the block or flat plate hand touch 10 and read the value: the maximum and minimum values of the display are used to determine the stability of the display
3.1.1 Requirements: 1 h is not more than 0.1 rm: 3.12.2 Determination method
The Japanese side observes that the ruler is tightened at any position within the measurement range. The change in h flash is not greater than the specified value.
3.12 Indication error
3.13,1 Double requirement, should not exceed 1 toughness
3.13,2 Determination method
Use 3 or 6 equal blocks to calibrate on a 1-level plate, the distribution of the inspection points, for the size range, use a height caliper within 300mm, not less than the hook points, such as a 3m height caliper, the inspection points are 101,30mm1, 201.60m, 291.90mm or 101.2(lmm, 201.5mm, 291.80n: For a size range of 100mm, use a height caliper of 300ru, less than 6 points evenly distributed, such as (-0):nm height caliper: the inspection points are 80 trlm,161.30 mm,240 nm.321.6ij mm,400 mm:491.90 mm 8n m,161.20rm,2401:m,321.50nm,400mm,1y1.mYl zero check point segmentation is based on actual standard 82 Verification point method
This is the upper scale on the 1st level board: move the fire sample, measure the side surface and the flat plate (if there is a micro device installed, it must be used to avoid movement), and observe it under the flow condition of the scale. When necessary, the microscope is used for verification.
3.11 Vertical variability
3.11.1 The height of the vernier scale and the group scale should not exceed 12 of the graduation value. The scale should not pass through the high pressure in front of the digital display
3.11.2 Verification method
Under the same conditions, move the sample, and make the measurement and the block or flat plate hand touch 10 and read the value: the maximum and minimum values of the display are used to determine the stability of the display
3.1.1 Requirements: 1 h is not more than 0.1 rm: 3.12.2 Determination method
The Japanese side observes that the ruler is tightened at any position within the measurement range. The change in h flash is not greater than the specified value.
3.12 Indication error
3.13,1 Double requirement, should not exceed 1 toughness
3.13,2 Determination method
Use 3 or 6 equal blocks to calibrate on a 1-level plate, the distribution of the inspection points, for the size range, use a height caliper within 300mm, not less than the hook points, such as a 3m height caliper, the inspection points are 101,30mm1, 201.60m, 291.90mm or 101.2(lmm, 201.5mm, 291.80n: For a size range of 100mm, use a height caliper of 300ru, less than 6 points evenly distributed, such as (-0):nm height caliper: the inspection points are 80 trlm,161.30 mm,240 nm.321.6ij mm,400 mm:491.90 mm 8n m,161.20rm,2401:m,321.50nm,400mm,1y1.mYl zero check point segmentation is based on actual standard 8
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