JB/T 10033-1999 This standard is a revision of ZB J42 039-90 "Micrometer". 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, dimensions, technical requirements, inspection rules, marking and packaging of micrometers. This standard is applicable to micrometers with graduation values ​​of 0.01mm, 0.001mm, micrometer screw thread pitch of 0.5mm or 1mm, and measurement range of 0~15, 0~25 and 050mm. This standard was first issued on September 26, 1990. JB/T 10033-1999 Micrometer JB/T10033-1999 standard download decompression password: www.bzxz.net

1CS 25.068.20
Machinery Industry Standard of the People's Republic of China
JB/T10033—1999
Micrometer head
1999-05-20 Issued
National Bureau of Machinery Industry
2000-01-01 Implementation
JB/T10033-1999
This standard is revised on the basis of ZB/T10033-1999. The technical content of this standard is consistent with ZB/T10033-1999. It is only reorganized according to relevant regulations. This standard will be implemented from the date of ZB/T10033-1999. The attached pump A of this standard is the appendix of the standard.
This standard is proposed and approved by the Technical Committee of Standardization of Gauges and Gauges of the Ministry of Industry and Information Technology. The responsible drafting unit of this standard: Jiangxi Tools
The participating drafting unit of this standard: Changshu Measuring Tools and Lighting Factory. The main drafters of this standard: Chen Zhiquan, Li Weiguo, Huang Juhan. This standard was first issued in 1990.
1 Scope
Machinery Industry Standard of the People's Republic of China
Micrometer head
Mkrometer head
JB/T10033—1999
Replaced by ZBJ42039—90
This standard specifies the type, basic parameters, dimensions, technical requirements, inspection rules, marking and packaging of micrometer heads. This standard is applicable to micrometer heads with a graduation value of 0.01mm, 0.001mm, a secondary micrometer rod with a diameter of 0.5mm or 1mm, and a measurement range of 0~15, 0~25 and 0-50mm. 1 Definitions
This standard adopts the following definitions:
2.1 Micrometer head
Using the principle of screw assembly, the axial movement of the micrometer screw is read and a replacement for the mounting position is provided. 2.2 Micrometer head movement deviation
The reading deviation curve obtained along the full range of the measuring screw. The difference between the highest point and the lowest point of the curve on the ordinate. 3 Type, cost and size 3.1 The recommended types of micrometer heads are shown in Figures 1 to 5 (the figures are for illustration only and are not intended to show detailed structures). The following items are divided into two categories: Figure 1: Type micrometer head. Figure 2: Micrometer head. Approved by the Machinery Industry Bureau on May 20, 1999. Implementation on January 1, 2000. 10033-1999
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Type Micrometer Head
Figure 4TV Type Micrometer Head
Weidian Set Selection
Installation Departmentwww.bzxz.net
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Figure 5 Laser Test Head
Dental Business
Original Business
Already Divided
3R /T10033-1999
3.2 The standard of the measuring head is 015mm, 025mm, 0-50mm3.3 The scale effect of the complete inspection tube shall be in accordance with the provisions of the table unless otherwise specified. Table
Plate
3.4 ​​The micrometer head shall be designed according to the requirements of the measurement force without measuring the amount of connection technology
4.1 There shall be no external defects on the micrometer head that affect the use1.2 Relevant effects
4.2.1 The movement of the micrometer head and the micrometer handle should be smooth without any jamming. When the number
0:510:15
0;5;10;15;20;25
#5#10:15#20:25:30:3540;43:50mm
4.2.2 For the micrometer head with counter, when the micrometer screw is turned, the counter decreases and advances in sequence. The transmission parts The rotation of the parts should be without positive ball bearing. The center of each code should not exceed 0.3mm: 4.2.3 The axial and radial clearances of the micrometer should not exceed 0.01mm: 4.3 Correctness of positioning
4.3.1 The zero position of the micrometer head can be correct, and the light and the potential can be adjusted. 4.3.2 For seasonal adjustment, the lead scale and tail scale of the vernier scale of type 1 and V micrometer heads should not coincide with the corresponding scales on the flame divider.
4.4: If necessary, the micrometer head can be made into a code with a recognition error of less than 1 mm, scale line
4.5 For type III measuring instruments, the difference between the counted value and the indicated value of the sight glass micrometer head should not be greater than 0.003 mm, mm
4. The width of the scale line, vernier scale line and differential line of the fixed sleeve of the micrometer head is 0.15-0.20 mm, and the width difference of the scale line should not be less than 1.03 mm,
4.7 For type I, II, V micrometer head, the distance between the differential surface of the fixed sleeve and the longitudinal scale line surface of the fixed sleeve is not greater than 0.4 mm, and the distance between the micrometer vernier scale line and the differential line surface is not greater than 0.1 mm. The height difference between the two scale lines is not greater than nm
4.8 The distance between the end face of the micrometer head differential cylinder and the micrometer slide and the fixed sleeve is not more than n.05mm, and the distance is less than 0.10mm. 4.9 The measuring surface of the micrometer head should be made of cast metal, and the micrometer rod should not be less than 664HV (= 58HKC). According to the needs, the measuring surface can be made of high quality, and the clearance should not be less than 766HV (62HKC). 4.10 The surface roughness R value of the micrometer head measuring surface is U.m. JB/T10033-1999. For micrometers with small parts, when the measuring surface and the spherical surface are in contact, the measuring force change is not greater than the measuring head measuring flatness tolerance and the measuring relative micrometer rod verticality tolerance are shown in Table 3. 4. 12
The flatness will be different
4.13 The movement deviation of the micrometer during the production process shall not exceed the requirements of the following Table 4, Table 4, Measurement range
D-[5, 0~25
4.14 The micrometer shall be equipped with a tool for adjusting the zero position 5 Inspection rules
5.1 The inspection method is shown in Appendix A (Standard Appendix). 6 Marking and packaging
6. The micrometer shall be marked with:
a) Manufacturer's name or registered trademark;
h) Product serial number:
Central value.
6.2 The packaging box of the micrometer shall be marked with:
a) Manufacturer's name or registered trademark;
b) Product service name;
c) Measurement range.
Bending value
Vertical tolerance
6.3 The micrometer head shall be treated with protective measures before packaging and shall be properly packaged to prevent damage during transportation due to improper packaging. 6.4 The micrometer head that has been inspected and found to meet the requirements of this standard shall be accompanied by a product certificate. The product certificate shall be marked with the standard, product number and product number of this standard. "Date,
810033-1999
Appendix A
【Standard】
Testing method of micrometer head
This appendix is ​​about the testing piece of micrometer head in cattle production plant. When the moving deviation of micrometer head reaches A1, fix the micrometer head to the special inspection fixture, and install a fixed measuring block with a spherical rigidity at the center of the micrometer screw. Then press the precision blocks of Table A1 respectively for inspection, as shown in Figure AI. The error curve of the indicated value of each inspected point is drawn, and the difference between the farthest point and the lowest point of the curve on the ordinate is calculated. Table A1
2.5: 5.1: .7: 10 3; 12.9: 112.5:5.1:77;10.3:12.9:15:17.6:20.2:22.8:255.1: 10.3: 15: 20.2; 25: 27.5: 32.7: 37.9: 42.6: 47.8: 505
A2 Consistency of the counter reading and the micrometer indication
When checking the grid deviation according to Chapter A1, the difference between the counter reading and the micrometer indication shall be greater than 0.003mm. To check the return error of the A3 micrometer, place the measuring head on the self-testing instrument and install a torque ratio meter near the surface of the micrometer screw. Then use a set of grade blocks in accordance with the table A2 to check. First, perform the forward stroke test and read the indicated value of each point. When performing the reverse stroke test, read the indicated value of each point. Within the range, the maximum value of the difference between the forward and reverse stroke values ​​at each point is the micrometer head's stroke error. stimulatory F
A4 interaction
TB/T10033—1999
7:8;9;10:5.1:10.3:15
1: 1.2:1.4: 1.6;1.8:2: 3; 4:5:6:1;1.2: 1.4: 1.6: 1.8; 2: 3, 4: 5: 6:m
7:8;9:10;5.110.3:J5:20.2:25
1.21.4:1.6;1.8:2:3:4;5:67::9:[0,5.1:10.3:15:20.2:25:27.5: 32.7: 37.9; 42.6: 47.8; 504.! Check the axial distance by hand. If there is any objection, measure the distance on the special inspection tool. 42. Check the radial distance by hand. If there is any objection, put the micrometer head on the special tester and measure the diameter at 10mm from the secondary end face. The 44.3 micrometer head has a small diameter at the junction of the micrometer cursor and the differential scale line surface. If there is any objection, use a ruler to measure the width of the A5 scale line and The width difference of scale lines
A5.1 The scale line width difference can be detected on a microscope. A5.2 The scale line width difference can be observed by itself. If there is a measurement error, it can be effectively tested on a tool microscope. A6 The correctness of zero position
When testing, fasten the micrometer head to a special inspection station, install a temporary station with a ball mark near the desired measurement, and rotate the force measuring device to make the micrometer and the fixed measurement station. Use a ruler to observe the overlap between the zero scale and the tail scale on the micrometer vernier and the corresponding scale on the differential. If there is a guide, use a direct measurement on the microscope to detect. A7 The hardness of the micrometer head measuring surface and the micrometer screw A7.1 For the measuring surface without carbide, its wear can be tested on the smooth round part of the measuring surface or the end face of the observation surface 1mm. A7.2 The screw should be inspected at least 20 points across the measuring surface. A8 Force measurement and force variation
Measure the force and force variation on the micrometer head and the dynamometer. The perpendicularity tolerance of the measuring surface relative to the axis of the micrometer screw is as shown in A2. The micrometer head is rotated. The maximum and minimum values ​​read by the self-alignment are converted according to formula (1):
The diameter of the micrometer screw is measured, mm\-the difference between the limit value and the minimum value of the self-alignment... The maximum variation tolerance of the measuring sample to the axis of the micrometer screw is from AI
JB/T10033-1999
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