JB/T 10026-1999 This standard is a revision of ZB J42 026-88 "Universal Angle Ruler with Dial". During the revision, only editorial changes were made according to relevant regulations, and the technical content has not changed. This standard specifies the type, basic parameters and dimensions, technical requirements, marking and packaging of universal angle rulers with dials. This standard is applicable to universal angle rulers with a graduation value of 5' and a measuring range of 0° to 360°. This standard was first issued on April 22, 1988. JB/T 10026-1999 Universal Angle Ruler with Dial JB/T10026-1999 Standard download decompression password: www.bzxz.net

1C525.060.20
Standard of the Machinery Industry of the People's Republic of China
JB/T10026-—1999
Dial universal bevel protractor1999-05-20 Issued
National Bureau of Machinery Industry
2000-01-01 Implementation
JE/T10026-1999
This standard is revised on the basis of BJ42026-88 (Dial Universal Bevel Protractor). The technical content of this standard is consistent with that of Z.B142026-88, and it has only been re-edited according to relevant regulations. This standard replaces ZBJ42026-B from the date of implementation. Appendix A of this standard is the appendix of the standard.
This standard is proposed and managed by the National Technical Committee for Standardization of Gauges and Instruments. This standard was drafted by: Zigupanjuyixiao. This standard was first issued in 1988.
Mechanical Industry Standard of the People's Republic of China
Universal Angle Ruler with Table
Dlalaniversa) bevel protractor JE/T10026—1999
Generation Police ZBJ42.02688
This standard specifies the type, basic plate number and size, technical requirements, marking and packaging of universal angle ruler with table. This standard is applicable to universal angle rulers with a graduation value of 5° and a measuring range of 0~360°: 2 Specifications
2.1 Universal angle ruler
A single-degree measuring instrument that uses a movable ruler to measure the surface relative to the base ruler surface, and uses a machine-embedded indicator to read the angle between the two measuring surfaces.
2.2 Indication error
The difference between the indication value of the indicator and the actual angle of separation between the two measuring surfaces. 3 Types, basic parameters and dimensions
3.1 Specifications The type of universal angle ruler is shown in the figure (the type shown in the figure is for illustration only, not for indicating detailed structure). The ruler is directly connected with a wrench. The enclosed table is shown in 3.2. The basic number and size of the universal angle ruler are shown in Table 1-1-20) or 301G. Approved by the National Machinery Industry Bureau on May 20, 2000-0-01-01 Implementation
4 Technical requirements
JB/T10026—199#
4.1 The universal angle ruler with dial should not have external hard defects that affect the performance. 4.2 The moving (rotating) parts of the universal angle ruler with dial should be able to move (rotate) flexibly and smoothly without sticking or loosening, and can be fixed in the required position. 4.3 The width of the scale line on the dial of the dial and the width of the pointer tip are 0.15-0.25nm. 14.4 The distance from the pointer tip to the dial should not be greater than 0.7m. 4.5 The tip of the needle should cover 3%-% of the length of the short scale on the dial. 4.6 The flatness tolerance of the universal angle ruler with dial is 0.003mm on any 100mm length; 0.004mm on 200mm length; 0.005mm on 300mm length. The flatness tolerance of other measuring parts is 0.003mm. The length of the side of the ruler measuring surface at both ends shall not be less than 5mm, and the length of the side of other measuring disk surfaces at both ends shall not be less than 1mm. 4.7 The parallelism tolerance of the two measuring surfaces of the universal angle ruler with dial is 0.02mm, and the parallelism tolerance of the two measuring parts of the base ruler is 0.007m.
4.8 When the pointer is aligned with the zero position, the ruler measuring surface is horizontal with the base scale measuring surface, the lower measuring surface of the ruler should be higher than the lower measuring surface of the base scale, and the height difference should not exceed 0.15mr (see Figure 2μ2
4.9 When the pointer is aligned with the zero line of the "minute" dial, the overlap between the indication on the "minute" dial and the green scale lines on the "degree" dial in the four quadrants should not exceed 0.15mr (see Figure 2μ2
4.9 When the pointer is aligned with the zero line of the "minute" dial, the overlap between the indication on the "minute" dial and the green scale lines on the "degree" dial in the four quadrants should not exceed 0.15mr (see Figure 2μ2
4.9 4.10 The surface roughness R of the universal angle gauge is shown in Table 2. Table 2 Carbon-based stainless steel 4.11 The surface roughness R of the universal angle gauge is shown in Table 3.3. The surface roughness R of the universal angle gauge is shown in Table 3.3. 32.3HRC)
The most ground surface
JB/T10026-1999
4.12 When the ruler is parallel or perpendicular to the measuring surface of the base scale, the zero position error shall not be greater than 1 scale value. 4.13 When the pointer is at zero position, the parallelism tolerance of the ruler measuring plate and the perpendicularity tolerance of the dial ruler measuring plate are shown in Table 4.
The parallelism of the ruler marking on the base scale is preferably within 100 lengths per hour.
4.14 The indication variability of the angle gauge with a table should not be greater than 1/3 graduation value: 4.15 The return error of the universal angle ruler with a meter should not be greater than 13 graduation value, and the point of the product surface
4.16 Regardless of whether the locking device is added or not, the indication error of the universal angle ruler with a meter is ±5°, and the indication error when using a meter with a meter is ±6.3°5 Marking and packaging
5.1 The universal angle ruler with a meter should be marked with: a) manufacturer name or registered trademark;
b) Graduation value:
e) Product serial number:
d) When the universal angle ruler is made of stainless steel, an identification mark should be left. 5.2 The packaging of the universal angle ruler should be marked with: 1. The manufacturer name or registered trademark of this manufacturer:
b) Product name;
c) Measuring range.
5.3 Universal angle rulers with dials should be treated with protective coating before packaging. The packaging should be safe and the product should not be damaged during transportation due to packaging problems. 5.4 Universal angle rulers with dials should have product certificates and instructions for use. The product certificates should have the standard number and ex-factory date of this standard. JB/T10026—1999bzxz.net
Current View A
【Appendix to the Standard】
Testing Method of Universal Angle Ruler with Dial
This appendix is ​​the verification method of universal angle rulers with dials used by manufacturers before delivery. The engraving room should use a tool microscope for verification.
A1 The plane of the measuring surface
is checked with a grade 0 blade ruler by the light gap method.
The verticality of the additional measuring surface to the measuring surface of the base ruler is checked with a 1-degree 90-degree ruler.
4 The parallelism of the ruler and the measuring surface of the base ruler
is checked with a white scale and a grade 1 flat plate or a special tester. A5 Zero position error
Use a special tester to adjust the measuring surface of the ruler to be parallel to the measuring surface of the base ruler (or at the 90° position: use a grade 1 90-degree short angle ruler to adjust the measuring surface of the ruler to be perpendicular to the measuring surface of the base ruler), and determine the displacement value between the pointer and the zero scale. A6 The degree of fit between the indicator and the zero scale of the "degree" dial is checked by visual observation or a 5x magnifying glass.
A7 Indication variability
Measure the zero position and any other two positions, and measure the disk for no less than 5 times in a row. The maximum value of the result. AB Program error
Measure the absolute value of the difference between the positive and negative stroke values ​​at the same position at the zero position and any other two positions. A9 Indication error
Connect the 2nd level angle to the two measuring surfaces, and record the difference between the indicated value and the actual value of the angle block. The indication error is tested and calibrated in the I and V quadrants and at the 90-degree position. The calibration points are 15°10°, 30°20°, 45\30°50°, 60°40° 75°50' 90°
After installing the additional scale, calibrate 15°10°.
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