This standard specifies the terminology, type, basic parameters and dimensions, technical requirements, inspection methods, marking and packaging of dial caliper indicators. This standard applies to dial caliper indicators with graduation values ​​of 0.01, 0.02 and 0.05 mm. JB/T 8346-1996 Dial caliper indicator JB/T8346-1996 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T8346-96
Indicator table of dial caliper
Published on April 11, 1996
Ministry of Machinery Industry of the People's Republic of China
Implemented on October 1, 1996
Mechanical Industry Standard of the People's Republic of China
Indicator table of dial caliper
1 Main content and applicable products
JB/T8346.96
This standard stipulates The terminology, type, basic format and size, technical requirements, inspection methods, marking and packaging of dial gauges are introduced. This standard is applicable to dial gauges with a graduation value of 0.01, 0.02, and 0.0Gmm. 2 Reference standards
GB1219
Vertical indicator
GB/T6317 with dial gauge
3 Terms
3.1 Caliper indicator
Special caliper indicator that converts linear displacement into angular displacement through a mechanical transmission system. 3.2 Working stroke
The linear displacement required for the dial gauge core assembly to complete the engagement. 4 Type, for this number
4. 1 Type
The type of the indicator is [Type I and Type II, see Figure 1, Figure 2. The figures are only for explanation and do not represent the detailed structure], machine components and movement resistance parts, approved by the Ministry of Machinery Industry on April 11, 1996, No. 1-0 implementation
JB/T8346-96
4.2 The scale value and one-turn indication value of the indicator are shown in Table 1. Table 1
Recommended indicator installation dimensions are shown in Table 2 and Figure
Installation scale
Scale excess volume
~·3im
4.4 The indicator should have a locking mechanism.
19±5. 042wwW.bzxz.Net
B=t, 030
18±0.012
19±0.042
YB/T8346—96
.5±..3c
4.5 The graduation value is 0.0t, 0.mm. The indicating table shall be in accordance with its complete carrying device, 5 Technical requirements
17.6±0.042
27±6.G42
2:.3±0.042
6.416.c:3
5.1 The indicating table shall not have defects such as scratches, spots, rust, flying ideas, etc. that affect the appearance and pressure performance. 5.2 The rotating parts of the indicating table shall rotate smoothly, flexibly and normally without any looseness or looseness. 5.3 The indicator should be able to rotate in the air and cannot fall off. 5.4 The radial pressure of the pointer shaft of the 1st type indicator should be within the range of 0.7~1 mm: Note that the length of the short scale line on the indicator should be within the range of 0.7~1 mm. 5. The distance between the tip of the pointer and the dial should not be greater than that specified in Table 3: Table
Cui Shi Di
5.? The width of the scale line of the dial and the width of the pointer end of the dial should be (1.1~0.2rm: 5. The difference in the density of the dial should not be greater than 0.C5mm. 5.9 The scale line on the zero dial should be less than 0.m?
7.55±0.030
9. 320. 030
1O.37±G.G35
11.a±0.cs
13. 35 ±0. c,
14. 0 : 0. n35
The relative indication error of the scale, the total reading of the indication, the accuracy of the indication, and the return error should not exceed the provisions of the tenth meter, 5. )
Comfortable control
Indicator time
Indicator value overall design
Indicator value variability
Return error
Maintenance inspection method
6.1 Inspection conditions
6.1.1 During inspection, the ambient temperature is 20±5℃. 6.1.2 The indicator and the inspection instrument shall be kept at the same temperature for at least 1h. 6.2 Inspection items and inspection methods
JB/T 8346-96
Inspection items, inspection methods and inspection tools are shown in Table 5 and Figure 45
External filter, mutual action
"Indicator's distance to space
Torsion force
Axis
Radial force
Short-term load length of the needle tip
Distance between the tip and the dial
Width of the dial and pointer
Anzhou width|| tt||Interval between scale lines on the dial of the indicator
Total reading of position
Error of adjacent indications
Variability of indication
Testing method
Eye contact is conducive to inspection
Good main wheel, turn the gear lightly, check the good quality with felt hanging observation case
eye contact or use a ruler to check (if there is a problem, check on the instrument) visual inspection (if there is a problem, check on the instrument) standard indicator is installed on The special tool will be used for the full working stroke in forward and reverse directions. The measuring points are determined according to the original indication error estimates of each measuring point, and the forward and reverse indication error curves are made. The maximum position of the highest point and the lowest point on the measuring line of the forward stroke indication is used as the total indication error curve, and the difference between the highest point and the lowest point on the ordinate of the corresponding measuring points on the two lines is calculated, or its maximum value is the same indication value as the indication type.
Install the indicator on the starting point, midpoint and end point of the special testing machine, and repeat the measurement 3 to 5 times to find the difference between the maximum indication and the minimum indication at each location. Take the maximum value as the indication variability of the indicator.
Based on the drawn upward and reverse indication error curves, find the stored value of the difference between the upward and reverse indication errors at each measuring point, and take the maximum value as the indication error. If the errors are relatively small, it will be a problem! Measure the point again 3 times, and make sure that the interval between the measuring points is at least 2 times. Take the level of the low level shown this time as the step indicator. The tool is a feeler gauge, and the tool display is a microscope. Special microscope burning microscope. Special safety test device. (The total safety is not guaranteed to be a special test range. (The uncertainty is that the card will be used to test the device. (It is not guaranteed to become a special test vibration device. (It is not guaranteed to become a special test vibration device. The degree of certainty is
7 Marking and packaging
Direction of movement of the small indicator
Positive and negative indication of the blood clot
. Reverse travel indication of the blood clot
7.1 The small indicator should be marked
2Manufacturer's name or registered trademark:
b. Graduation value:
Product serial number.
T.3The indicator packaging box should have the following:
Manufacturer's name or registered trademark:
b.Product name:
e Graduation value.
JB/T 8346--96
Heart-to-heart total visit ticket
Force-to-adjacent error
One-way error
7.3 The old indicator should be processed and packed before packaging to ensure that the product will not be damaged during transportation. 7. The goods should have product enterprise certification, which should be marked with standard number, product number, shaft gear adjustment and date of manufacture, and should be accompanied by the actual error value.
Additional instructions,
This standard was proposed by the National Quality and Safety Standardization Technical Committee and was drafted by the Ministry of Industry and Information Technology of China. The main author of this standard is Chen
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.