JB/T 9151.4-1999 JB/T 9151.4-1999 Fastener test methods Dimensions and geometric accuracy Washers JB/T9151.4-1999 Standard download decompression password: www.bzxz.net

[CS 21.060.0
Machinery Industry Standard of the People's Republic of China
JB/T9151.1~9151.7—1999
Method of verification for fastenes-Size and geometry
Published on 1999-06-28
State Machinery Industry Bureau
Implemented on 2000-01-01
Machinery Industry Standard of the People's Republic of China
Method of verification for fastenes-Size and geometry
Mcthad of verification for fastenesSize ad geometry—Washers
JB/T9151.4—1999
代书2B113002.4-90
This standard specifies the test potential of the dimension measurement and geometric accuracy of the products, and should be used in conjunction with the corresponding product standards and their derivative standards. For items where two or more test methods are given in the standard, the method is not specified. If necessary, the supplier and the buyer shall reach an agreement. This standard applies to the areas specified by national standards and industry standards, and non-standard parts can also be used for reference. Note: The size codes used in this standard, except for the notes, are consistent with the product standards and basic standards. 2 Reference standards
The provisions contained in the following standards constitute the text of this standard through reference in this standard. When the standard is issued, the versions shown are valid. All standards are subject to revision, and the parties using this standard shall discuss the possibility of using the derivative versions of the following standards. GB/T1214.2—1996
GB/1 1219—1985
GB/T 1957.... 1981
JB/T87881998
Vernier caliper Vernier scale
Digital indicator
Optical limit gaugewwW.bzxz.Net
3 Dimension test items, methods and inspection tools
Minimum test items, methods and inspection tools are in accordance with the provisions of the table. Approved by the State Administration of Machinery Industry on June 28, 1999
Implementation on November 1, 2000
JB/T:9151.4—1999
Test items and test methods
Inner diameter or.
Side 1:
A-level breasts use a 0.02mm caliper, and the remaining 0.05mm calipers are used to measure the most common method on any two mutually negotiated diameters. 2;
The smooth plug at the end of the wine should be able to pass smoothly: the smooth honey gauge entering the inner hole should not be greater than:
The thickness or thickness of the forbidden map.
The depth of the external road center
The depth of the thief gauge entering the inner hole at each end
0.5 0.5s
0.3#口.35
Use a 0.05mm caliper to measure the thickness of the two points in a perpendicular direction
Use a 0.05mm caliper to measure the full width
Wide pressure or high seat H joint
Use 0.05 1. Use a caliper with a width of 0.05 mm to measure. Use a flat edge to flatten the incremental pad, and then use a ruler or a caliper with a width of 0.05 mm or a special incremental gauge to measure. 4. Test items, methods and inspections of geometric accuracy are specified in Table 2. Note: The test method for coaxiality ignores the effect of shape error. Inspection method: GB/T1214.2. Caliper with a width of 0.05 mm to measure. Method 2: The deviation gauge should comply with GB/T 1957
Standards
GB1214.2 gauge
Caliper specified in GB/T1214.2
Caliper specified in GB/T1214.2
Caliper specified in GBT1214.2
Room gauge specified in JB/T8788:
Card specified in GB/T12142:
Secrecy gauge should conform to B/T1957
The made
[B/T9151.4-1999
Test items and test methods
Pingwang chart is applicable||t Place any side of the gasket on the inspection platform, measure with the dial indicator in reverse order, the difference between the values ​​shown on the indicators is the axial deviation of the outer wall of the gasket to the inner wall. Use a 0.02mm caliper to first measure the thickness between the inner and outer walls, then measure the value of the opposite wall. The difference between the two is the flatness of the gasket. Use the dial indicator specified in GH/T1219 and the caliper specified in GB/T1214.2. Use the European standard gauge. Place the gasket face on the inspection platform, and use a feeler gauge to measure the thickness of the gasket.
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