This standard specifies the type and size, technical requirements, inspection methods, marking and packaging of lever dial indicators with a pointer that rotates within a range of 360° and a measuring rod that moves in both directions. This standard applies to lever dial indicators with a graduation value of 0.01mm and a range not exceeding 1mm and a graduation value of 0.002mm and a range not exceeding 0.3mm. GB/T 8123-1998 Lever dial indicators GB/T8123-1998 Standard download decompression password: www.bzxz.net

KS 17. ±45. 30
National Standard of the People's Republic of China
GB/T 8123- 1998
Dial test indicaters
7998 -11 -38 Released
1999-09-01 Implementation
Released by the State Administration of Quality and Technical Supervision
GB/18123-198
Standard length reduction and speed reduction equipment: Lever type measuring instrument - Technical requirements for B631C-86 percentage indicator and GB8123-8 percentage indicator, which is equivalent to 150/DIS9493 in technical content. The above regulations are arranged according to the provisions of GB/T1.1 and the highlights of this industry. This standard has retained some of the internationally accepted requirements that have been proven to be suitable for my country's national conditions, namely, Article 4, Article 1.2, Article 4.4.1, Article 4.5.2~4.5.3, and Article 4.6. Compared with GB6310 and GB8123, this standard has some changes, mainly in the following aspects: 1. 3631\ and GB3123 are combined into a "red bar indicator table". 2. The national requirements of a single measurement specification are adopted, and the range is determined to enable enterprises to develop different specifications for the red bar indicator tables. 3. The terminology and definitions used in the standard are all quoted from the relevant standards. The industry customary terms are cancelled to facilitate the standardization. 1. Clearly stipulate the return, repeatability, maximum allowable withdrawal, avoidance force, and measurement method. The technical indicators such as treatment are given the value of the standard 20 degrees. 5. The floating zero capital is included. The indication error of the indicator is determined according to the investment standard. 6. The technical indicator values ​​shown in Table 1 are the maximum allowable values. The error should be the actual fixed value. The technical indicators and the actual fixed values ​​are both called "errors". All technical requirements are stipulated under the same title of technical production, which is convenient for reference and product design. This standard is implemented from the time of 3:5-6G812347. All the contents of this standard are submitted to the standardization technical committee and are under the jurisdiction of the standardization technical committee. This standard was drafted by the Institute of Industry and Commerce. The main drafter of this standard is Jiang Zhibie.
GR/T123-1998|| tt||ISO formerly
ISU (International Organization for Standardization) is a federation of national standards bodies ([ISO member bodies]) collected by the world. Since 2001, work on international standards has been carried out by 1) technical committees: interested member bodies have expressed their views on the committees that have already decided on the item. Official or non-official international standardization organizations that have liaised with ISC may also participate in the work. IS) maintains close cooperation with the International Electrotechnical Commission (EC) in matters concerning electronic technical standardization. 150/DIS93 issued 1S/TC3 limits and matching technical committee list, and based on the studies carried out by the joint working group, it resumed work with ESO/T3 reports and coordination, ISOTC10/SC5 dimensional tolerances and 15 057 meter and surface work group city Appendix A, for reference to the list and appendix investment
International Standard IS) MS3 required Sichuan. What is the record technical specification (GPS) International Runlou designated as the universal GPS standard silicon (see 13C/IR1436 several words disk calibration technical specification GIS) -... total heat). Technical standards involve standard chain rope drum 5 ring scale + standard departure from the straight line shape of the reference element surface shape, diameter return circle class movement that is, full runout, the relevant two standards and G investment type relationship see Appendix C this standard:
Promote the relationship between the manufacturer and the purchaser, the quality assurance system is divided into strong measurement base equipment temporary service 1 standard garden
National Standard of the People's Republic of China
Lever indicator
Dlai Vest Indicalors
/8123—1998
This specification specifies the types and dimensions, technical requirements, test methods, and installation of lever indicating sleeves with full rotation and double movement of the measuring rod.
The standard applies to lever indicating sleeves with a minimum stroke of 0.01ax, a maximum stroke of not more than 1mm, and a maximum stop of 32mm, 3mm or more.
2 The following standards are used to define the standard.
2.1 Extended Indicator
The measuring stop of the indicator is a measuring stop that uses a mechanical transmission system to convert the position of the support into the forward displacement of the indicator finger and the reverse tooth effect of the indicator. 2.2 Maximum Permissible Error
The standard for installation is the maximum permissible error specified by the manufacturer. 2.3 The risk of error in measuring instruments is as follows:
2.4 The absolute difference between the measured values ​​under the same conditions and the measured values ​​under the same conditions is not an absolute difference between the measured values ​​and the measured values. 2.5 The calibration curve
indicates the functional relationship between the actual measured value and the measured value of the instrument. 2.6 The calibration curve
can be used as the set position within the range of the measuring plate. 2.7 The scale mark
corresponds to a scale mark or other mark on the measuring device that corresponds to a certain measured value. 2.8
is a part of the measuring device that is composed of a set of scale marks and a valid scale mark. 2.9 The distance between any two scale marks can be measured along the scale length. 2.10 Scale digital
A group of sensitive products marked on the scale, which corresponds to the value determined by the scale mark, or only indicates the digital output of the scale. 2.11 A position
indicates the state of the measurement. 3 Type and size
3 The type of lever indicator is shown in Figure 1. The figure is only for illustration and does not represent the detailed structure! Approved by the Bureau of Quality and Technical Supervision on November 18, 1998, and implemented on September 1, 1959
GB/T8'23-1998
Figure 1 Type of lever indicator seat
3.2 The matching dimensions of the lever and the indicator seat should comply with the provisions of the State 1, 4 Technical requirements
The indicator seat should not have any external traps that affect the use of the instrument. 4.24.
This Institute's "For use with coal eyebrow selection"
In the normal use state, the rotation of the dial and pointer should be stable and flexible, without looseness or jamming. 4.3 Installation
4.3.1 The scale seat is arranged in 0.01mm and 2.0mm widths, and the scale mark is smooth and the bone difference is appropriate. The scale is not arranged in a row.
GB/TB123—1998
Figure 2 Schematic diagram of scale arrangement
4.3.2 The scale value should be clearly marked on the scale plate, see Figure 2. 4.3.3 The scale interval should be less than 0.7mm
4.3.4 The scale mark width should be 105%~20% of the scale length, and the width should be consistent. 4.3.5 The scale mark length should be smaller than the scale mark. 1.3.6 Every 5 scale marks on the scale plate should start with the long scale mark, and every 1C scale mark should be marked with a number. The positive number should mark the scale position on the scale plate. Please forget the diagram. 4.4 Pointer
1, 4.1 When the pointer moves from the original position, it should rotate in a clockwise direction. 2.4.2 The width of the pointer tip should not exceed 23 of the scale. The width of the pointer should be as consistent as possible with the width of the scale. 4.4.3 The pointer length should ensure that the pointer is within 3%~60% of the scale length. 4.4.4 The friction between the pointer tip and the dial should not exceed 0.7%m. 4.5
4.5.1 The measuring support should be a spherical or involute head with a diameter of about 1 mm. 4.5.2 The measuring support should be made of hard and abrasive materials. Its surface should have only moderate torsion. 2.5.3 The measuring support should be able to rotate in the direction indicated by the marking under an external force of 3--8N. 4.6 The measuring range of the measuring rod indicator should be at least 220 tons. 4. Special adjustment
The measuring support should have a swivel function: the depth of the measuring position can be adjusted. 4.8 Three key technical indicators: the maximum allowable error, return error, reproducibility, maximum force, measured force change and other quality indicators are not greater than the table "setting, 3
creative support error
number of reverse technical standards
in the child's 1 small scale center
characteristic Sichuan small standard center
let the west 1/2 turn
full registration
GB/T8123—1998wwW.bzxz.Net
± 0. t52
± 0. t13
According to the measurement method, the measuring force required by the indicator table should be as small as possible when working. 5. According to the test method, the measuring force required by the indicator table should be as small as possible when working.on2
will be reliable in the purple of the port indication table is still under its measurement to allow the small shadow to be checked on its installation pen, in the diffuse material starting position or, make the measuring mark line vertically convex to the certification side. "The following method does not represent the only test method. 5.1 Indicator elimination error
free evaluation on the positive and reverse travel directions (two directions of rotation of equal length), with appropriate time before the measurement and certification to the full range. According to a series of measured values ​​(values ​​to be drawn to confirm the line, the maximum indication error is determined based on the floating zero principle. If a dispute occurs. The following method is used to determine
on the positive and reverse travel directions of the measuring rod (called the two moving pieces in the reverse direction), the graduation value is 0.01mm. , with the same attachment and graduation value of (2m) for each scale mark, the whole plate is extended with 1C scale marks, and the series of measured values ​​(indication) will be calibrated as shown in Figure 3. Find the highest point and the lowest point on the calibration curve. Then note that every two scale marks within the interval of 5 scale marks, the new high point and the lowest point are recorded; the maximum and minimum value errors are determined according to the floating zero principle: see Figure 4 and Figure 3, :2
By hitting the correct mark
GB/T81231998
Figure 3: Determine the zero position of the false indication! Schematic diagram of the industry J. 2
Figure 4 The error of the standard for the evaluation position (the control center line) is shown in Figure 0.
First, the product is in the north
5.2 The error
GR/TB:231998
Figure 5 The maximum error of the whole process is shown in the figure
In the calibration line, the maximum difference between the points on the line is calculated by .3. Read the figure. 5.3 Again
Under certain conditions, a point within the source or range Use the same controlled variable to gradually or naturally produce a small displacement to calculate the complex number, the difference in the displayed value is the annual value of the point; collect the maximum value of the blue or the intensity of the indicator at 5-10 points as the complex number of the indicator light.
5.4 Force measurement
Use code, strength and change the gear of the force device to be inspected 6 signs and packages
6.1 The rod indicator system should at least be marked with:
) manufacturer name or registered trademark
b) filter value:
product number.
6.2 The packaging of the lever indicator should at least be marked with: a. manufacturer’s name or registered trademark, product name, distribution and origin:
6.3 The lever indicator should be treated with anti-rust treatment before packaging. The product should not be returned during transportation before packaging. 6.1 The lever indicator that has been calibrated to meet the requirements of this standard should be accompanied by a product certificate, which should have the standard number, product serial number and date of manufacture.
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