Some standard content:
(Beijing) Xindengzi No. 024
People's Republic of China
National Design Verification Regulations
Combination Angle Gauge
JJG132---94
Office of Technical Supervision of the People's Republic of China
Published by China Planning and Trade Press
Beijing Collection of Xueyi Kewu A1bzxZ.net
China Planning and Medical Publishing House Du Yinguang Printing
Published by Xinhua Bookstore Beijing Distribution Office
Kaijie. 850×1168/32
1st edition in October 1994
Printing sheet 0.375 characters 6 dry characters
1994 10 1st edition
Printing efficiency 1-1500
Edition No. 155026-763
Price 2.00 yuan
National Metrology Verification Regulation of the People's Republic of China JJG 132-94
Combined Angle Gauge
Implemented on December 1, 1994
Approved on May 6, 1994
National Technical Supervision
Verification Regulation of
Composite Angle Gauge Gauge
: JJG.132-94
This procedure was approved by the State Technical Commission on May 6, 1994, and took effect on December 1, 1994.
Responsible unit: Shanghai Technical Supervision Bureau
Drafting unit
Changzhou Jiken Testing Technology Research Institute
The technical department of this regulation is responsible for explaining the main drafters of this regulation,
Yang Xiaonong
Li Dexing
Participating drafters:
Jiang Xiaoxi
Chen Cunqiu
Shan Huoqing
(Changzhou Jiken Testing Technology Research Institute)
(Daizhou Jiying Testing Technology Research Institute) (Changzhou Jijing Testing Technology Research Institute) (Changzhou Jijing Testing Technology Research Institute)
(Daizhou Jisheng Testing Technology Research Institute)
(Wujin Cutting Tool and Measuring Tool Factory)
Verification items and conditions
Technical Requirements and verification methods
Processing of verification results and verification cycle·
Appendix Appearance and technical requirements of special inspection circle features (1)
...(7)
JIG132-94
Verification procedure for combined angle gauges
Total 7 pages No. 1
This verification procedure is applicable to the verification of combined angle gauges with a measuring range of 180% and a measuring range of 300mm for newly manufactured, used or repaired divided dials. Overview
Combined angle gauges are mainly used for angle measurement, length measurement, height measurement and centering in machine processing and unmolded parts.
Combined angle gauges are composed of a pin scale, a true scale, a centering gauge, a scale seat, a divided dial, etc., and their appearance is shown in Figure 1.
1—center gauge t2—rule base, 3—dividing plate 4—straight ruler, 5—angle ruler, 6—level The ruler can be used alone to measure the maximum length, height, etc. The dividing plate and the ruler base form an angle measuring screen, which can be combined with a ruler to measure any angle within ~180° (or ±90\).
The degree ruler can be combined with the "ruler" to be used as a vertical ruler, and can measure the maximum 45°00°. A total of 7 pages, page 2
The combination of the center gauge and the ruler can be used to determine the center of a circle. Verification items and verification conditions
JJG132-94
1 The verification items and verification tools of the combined angle gauge are listed in Table 1. 2 Verification system
2.1 The temperature within the verification period should be 20±8℃. 2.2 Before verification, the verification tool under verification should be kept at room temperature for at least 2h.
Verification items
Name part is limited to
each training and surface Baked film
to my heart solid degree device
each measuring surface is not set with my membrane
level instrument piano position no difference
commercial ruler error case
real instrument installation
derivative ruler error
clear view of the most
card and calibration tool
mounted surface marrow ratio wheel sample
reading microscopic obstacle
1 grade knife edge ruler, 2 grade table ruler
1 grade level, water
three-effect line casting center
1 grade micrometer
【Type 2 wide
2 grade table ruler
1 pregnancy 2° observation
special inspection Circular method (by the manufacturer)
2-level millimeter
Note: "+" in the table means it should be calibrated, "-" means it is not necessary to calibrate. Technical requirements and calibration methods
3 Appearance
Newly manufactured, it is the market
3.1 Requirements, the measuring surfaces of the corrective gauge should not have any dents, marks or obvious scratches, and other surfaces should not have paint peeling, burrs, and other defects that affect the appearance quality. The scale and indexing dial should be clear and straight, and there should be no visible broken lines at the edge. The glass of the water bottle should be transparent, and the engraving on the tube cover should be The lines should be clear and even, and there should be no discoloration. The manufacturer's name (or trademark) must be on the angle gauge. The combination angle gauge is allowed to have appearance defects that do not affect the measurement accuracy during use and after repair.
3.2 Verification method diagram.
4 Interaction of various parts
4.1 Requirements: The movement of each assembly should be smooth and stable, without sticking and obvious movement, and can be securely fixed in the required position. 4.2 Verification method; test and observation
5 Surface roughness of each measuring surface
5.1 Requirements: The surface roughness R of each measuring surface shall not be greater than 0.8 um, 5.2 Verification method, use surface roughness comparison sample block to verify by comparison method, and use surface roughness instrument to verify when necessary.
6 Scale width and width adjustment
6,1 Requirements: The scale width of ruler and scale mark is 0.15±0.05mm, and the scale width difference is 0.05 mm.
,2 Verification method, use 0;01mm reading microscope to verify, at least 3 scale lines should be tested on the ruler and scale plate, and the scale width difference is determined by the difference between the maximum and minimum widths of the scale lines tested on the ruler and scale plate.
7 Flatness or straightness of each measuring surface
7.1 Requirements: Each measuring surface is not allowed to be convex, and the flatness is not greater than 0.02 mm. The straightness of the measuring surface is not greater than 0.02 mm
7.2 Verification method: Use a grade 1 ruler and a grade 2 ruler for verification. The verification position is shown in Figure 2.
When the width of the edge is not greater than 5 mm, see Figure 2a, and the edge is within 3 mm from the measured edge.
When the width of the edge is greater than 5 mm, see Figure 2b, and the larger value among the three positions is taken as the verification result. Edge collapse is allowed within 1 mm from the edge. 8 Zero position error of water meter
JJG132--94
8.1 Requirements: The zero position error of water push on the angle ruler and the graduation book should not exceed 1mm.8.2 Verification method: First use a spirit level to adjust the level 1 plate to a roughly horizontal position, place the graduation plate (after aligning it with the ruler base) and the angle ruler on the plate, and after the air leakage is stable, read the value of the - end of the air bubble to obtain α (the distance from one end of the air pool to the engraved line), then turn 180° in situ, and record the reading of the other end of the bubble according to the first reading?. Half of the difference between the two readings should not exceed 1mm.
"Straightedge error
9.1 Requirements
9.1.1 Parallelism of the two measuring surfaces of the ruler: The total length shall not exceed 0.03mm, 9.1.2 Indication error of the ruler: The indication error of the additional length shall not exceed ±0.1mm, the indication error of any millimeter shall not exceed ±0.05mm, and the indication error from the end to a line shall not exceed ±0.1 mn.
9.2 Verification method
9.2.1 The parallelism of the two measuring surfaces of the ruler shall be verified with a 0~25mm1-grade micrometer. The width shall be measured at the two ends and the middle of the ruler, and the maximum and minimum values shall be taken as the parallelism value.
9.2.2 The indication error of the ruler shall be compared with a three-equal-line-grained meter ruler. 10 Angle error
10.1 Requirements
10,1.1 The height difference between the edge of the scale line surface and the surface of the scale seat shall not exceed 0.1 mm, 10.1.2 or the indication error of the negative device shall not exceed 120°JJG132-94
10.2 Verification method
Total 7 pages Page 5
10.2,1 The height difference between the edge of the scale line surface and the scale seat surface shall be compared and verified with a 2-grade feeler gauge at the scale rate mark line. During the verification process, the scale plate shall be rotated and verified in no less than 3 positions, and the height difference shall meet the requirements. 10.2.2 When verifying the indication error of the goniometer, install a ruler and set the protractor at 45°, 90° and 135°. Use an angle gauge with a graduation value of 2' to measure the angle between the parent surface and the ruler base. The error should not exceed ±20°. 11 Angle ruler error
11.1 Requirements: The error of the 90° angle formed by the angle ruler and the ruler should not exceed 8°. The error of the 45° angle formed by the angle ruler and the ruler should not exceed ±10°. 11.2 Verification method: After the angle ruler is installed on the ruler, tighten it. Use an angle gauge with a graduation value of 2″ to verify the 90°45° angle formed by the angle ruler and the ruler. The verification should be carried out at the beginning, middle and end of the ruler. 12 Ruler measurement face The offset crown of the center ruler angle bisector 12,1 It is required that the offset should not exceed ±0.15mm in the working section of the center gauge. 12.2 Verification method: After the center gauge is installed with a ruler, it should be verified with a special inspection cylinder. During the verification, the two measuring surfaces of the center gauge should be close to the special inspection cylinder, and the center gauge should be rotated along the circumference so that the measuring surface of the ruler contacts one edge of the reference surface of the inspection cylinder. The gap A between the measuring surface of the ruler and the other edge of the reference surface of the inspection cylinder is measured with a 2-level ruler (see Figure 3). Figure 3
1 Inspection cylinder, 2-center gauge, 3-ruler total 7 Gong Page 6
Offset E is calculated as follows:
- Distance from the reference surface of the test cylinder to the center of the circle (mm) JJO132-94
A--- Gap between the measuring surface of the ruler and the base surface of the test routine (mun). Use two test cylinders with radii of and respectively to measure according to the above method. The corresponding E value is calculated from the above formula. The absolute value of E should be less than 0.15mm. IV. Processing of test results and test cycle. 13 After being selected to meet the requirements of this regulation , a calibration certificate will be issued. 15. If it does not meet the requirements of this regulation, a calibration result notice will be issued, and the unqualified items will be indicated. 14 The calibration period can be determined according to the specific situation, generally 1 year. G132--94
Appearance and technical requirements of special inspection cylinders.st
Total 7 grams Chapter 7
Yubiansuidun
Technical requirements:
1 A set of two special inspection cylinders, their diameters are calculated according to formula (1) and formula (2) Ⅱ, D, =2R=2(L-5)mm
D,=2=25mm
Where L is the length of the center gauge side (mm).
2 The cylinder diameter size tolerance is IT10,
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