JB/T 10014-1999 This standard is a revision of ZB J42 012-87 "Digital Inductive Micrometer". During the revision, only editorial changes were made according to relevant regulations, and the technical content was not changed. This standard specifies the type, name, technical requirements, marking and packaging of digital inductive micrometers. This standard is applicable to digital inductive micrometers with a resolution of 0.01μm, 0.1μm, and 1μm. This standard was first issued on July 8, 1987. JB/T 10014-1999 Digital Inductive Micrometer JB/T10014-1999 Standard download decompression password: www.bzxz.net

1C.525.060.20
Machinery Industry Standard of the People's Republic of China
JB/T10014-1999
Inductance micrometer with digital display1H9-05-21Promulgated
National Bureau of Machinery Industry
2000-01-01Implementation
JB/T10014—1999
This standard is based on 7B[42012—87 Digital Inductance Micrometer>. The technical content of this standard is consistent with 7B[42012—87, and it has been re-edited according to relevant regulations. This standard shall replace ZBJ42U12—87 from the date of implementation. The Appendix A of this standard is the authority appendix
This standard was proposed and approved by the National Measuring Instrument Standardization Committee. The responsible drafting unit of this standard is: Zhongyuan Measuring Instrument Factory. The main drafter of the standard is: He Zhaowei:
The standard was first issued in 1987.
Mechanical Industry Standard of the People's Republic of China
Digital Display Inductive Micrometer
Ludutameemicrumelerwithdlgital displayThis standard specifies the type, name, technical requirements, marking and packaging of digital inductive micrometers: JB/T1014-1999
This standard is used for digital display inductive micrometers with a resolution of 0.01μm, 0.1μm, and 1μm (hereinafter referred to as micrometers). Definition
The following definitions are adopted in the standard.
2. Digital display meter
It is a comparative measuring device which converts the change of the measured dimension into an electrical signal by an electrical sensor and displays the measured dimension digitally.
3 Type and name
The micrometer consists of a digital display and a sensor. Its type, main part name, installation and dimensions are shown in Figure 1 and Figure 2! The schematic diagram is for reference only.
Product
Digital display type comparative sensor
Electric switch
4 Technical requirements
4.1 Appearance
Figure Display
Source
2 Axial sensor
Measurement trend
Pressure flow
Magnification and adjustment control button
Move the position of the two parts
The surface should not be damaged, magnetic, sharp, pressure, etc. All kinds of signs, numbers and lines should be correct and clear. Approved by the State Administration of Industry and Commerce on May 20, 1999 and January 1, 2000 Implementation
4.2 Interaction
JB/T10014--1999
Each fastening part is firm and reliable: each rotating part is flexible, and there should be no jamming and thermal phenomenon. 4.3 Insulation and voltage
When the voltage is 500V, the insulation voltage between one terminal of the power supply socket and the charger should be greater than ten times: the voltage is tested for 900V for 1min, and the digital display part should not have any breakdown phenomenon. 4.4 Zero adjustment range
The zero adjustment range should be 20um
4.5 Quarterly balance
The balance should be within the range of ±2 digits,
4.6 Display value dynamics
The value variability is not greater than 0.08
4.7 Direction error
The time error is not large. B Return error
Return error should not be greater than 0.06μm:
4.9 Indication error
The indication error of each measuring instrument should not exceed the provisions of formula (1): 1=±(4×0.5% +1)
Where: 4-indication error, unit is word number: A-theoretical display number.
4.10 Shift stability
Within the specified working conditions, the stability of the micrometer indication over time should not be less than 0.5% of the specified time
Stability
The change in indication caused by voltage change should be within 0.02±m when the power frequency is 50Hz and the voltage changes within the range of 90%-110% of the rated value.
4.12 Shift stability
At the 0.0μm position, the sensitivity should be 0.01μm. 4,13 Each force|| tt||The measuring force should be within the range of 80%~120% of the design value. 4.14 Material, hardness and surface wax
The probe should be made of high-quality and durable material, and its surface hardness should not be less than 766HV, and the surface roughness should be R0.04m-2.
5 Marking and packaging
5.1 The digital label should be marked with:) Manufacturer’s name or registered trade name:) Instrument name and model number;
) Power supply voltage:) Year of manufacture;
Product number.
5.2 The sensor should be marked with
a) Manufacturer’s name or registered trade name:
b) Sensor model:
c) Year and month:
d) Product serial number.
JB/T10014-1999
S.3 The packaging of the micrometer should have good protection, vibration and moisture-proof measures, and the outer packaging should have the product name, manufacturer's name or trademark and moisture-proof, vibration-proof and other labels.
5.4 The micrometer should have a product certificate, which should have the standard code and product serial number of this standard. 5.5 The micrometer should be accompanied by a product instruction manual, which should indicate the measurement force regulations of various sensors used with the same set. Inspection conditions
JI/E10014—1999
(Supplementary requirements of the standard)
Inspection method
1 The ambient temperature is 201, and the temperature change is less than 3%. Www.bzxZ.net
AI.2 The site is not allowed to be disturbed by external vibration and magnetic field. A1.3 The micrometer and the stand to be used should be kept at isothermal temperature for 12h. The micrometer should be powered on and preheated for 0.5h. The pre-test should be carried out after the multiple adjustment. For inspection items, methods and tools, please refer to A1A. Add SV voltage to the micrometer and measure the insulation resistance between the terminals. After warming up, check with a 50Hz or InO0V positive wave bar (digital meter has special requirements and can be inspected in sequence). Put the micrometer in the same position as the test item. When the whole twist is rotated from one end to the other, read the maximum difference of the indicated value and set the range conversion switch to 0.01, open the zero position, and then change the range conversion switch to 0.1μm, 1um position accordingly. When each indicating position is reached, the range conversion switch is about 0.1 to 1.01. Make the head and the workbench on the platform touch each other. Consider that it is not an arbitrary value, use the opening mechanism to gently lift the head and let it fall by itself. The lifting value must be greater than the indicated range of the situation, and each time it is lifted, it should be consistent. Repeat this time, take the difference between the maximum and minimum values ​​in each indicating position and set the range conversion switch to 0.01μm. Apply a force equivalent to one of the specified measuring directions to the probe head in the four directions of front, back, left, and right of the probe head, take the largest value of each indication, and the smallest positive difference. When the conversion switch is in the center position, press the probe head first, and then slowly force the sensor to stop. After the value is set to a certain value, use the lifting mechanism to gently lift the double-headed wheel: the lifting force should be greater than the shock absorber, and then gently lower it again to find the difference before reaching the target. Repeat times, take the average value and the zero control, then use the corresponding middle and long positions of the probe stand and the machine to determine the smallest value error of these tested indicators in turn, and take the largest one (0. 1m gear.1 Special light tool inspection is required! Test 1
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JB/T10014—1999
install AI (complete)
modified sensor is clamped on the stand 1. The conversion switches are respectively U.1n, 1m, full range is connected to the full range, turn off the power and calculate 12h to start the machine for preheating for 5h. The maximum change of the display group within the warm-up time is set to 0.To stop at m position, adjust the indication value to make it close to full range, continue to apply 50H2, 220V AC, make the voltage change within the range of %-11% of the preset value: read the expansion change of the indication value. The sensor is clamped on the special test fixture, and the 0um code is changed to make the indication value UUS, which is the actual value. To observe the change of the indication value, make the sensing head mounted on the frame in a free hanging state, and then slowly move the force along the direction of the head movement with the dynamometer to 1, read the dynamometer reading when the indication of the instrument passes through the zero position, and then slowly move the probe downward again. When the indication of the micrometer passes the zero position, read it again on the dynamometer. Take the average of the two readings as the special test fixture for voltage measurement.
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