JB/T 3325-1999 This standard is a revision of JB 3325-83 "Angle Gauge Blocks and Accessories". During the revision, only editorial changes were made according to relevant regulations, and the technical content remained unchanged. This standard specifies the types and dimensions, technical requirements, marking and packaging of angle gauge blocks with accuracy levels of "0", "1" and "2". This standard is applicable to block-shaped angle gauge blocks with a certain angle between measuring surfaces. This standard was first published in 1962 as GL 4-62 and was first revised to JB 3325-83 on July 13, 1983. JB/T 3325-1999 Angle Gauge Blocks and Accessories JB/T3325-1999 Standard Download Decompression Password: www.bzxz.net

ICS25.060.20
Standard of the Machinery Industry of the People's Republic of China
JB/T3325—1999
Angle gauge Hock and accessories
1999-05-20 Issued
National Bureau of Machinery Industry
2000-01-01 Implementation
JB/T3325—1999
This standard is revised on the basis of JB3325-83 "Angle gauge Hock and accessories". The technical content of this standard is consistent with that of JB3325-83, and it has only been re-edited according to relevant regulations. The appendix A and appendix B of this standard are both appendices of the standard. This standard replaces JB3325-83 from the date of implementation. This standard is proposed and managed by the National Technical Committee for Standardization of Measuring Tools and Instruments. The responsible drafting unit of this standard: Harbin Measuring Tools and Cutting Tools Factory. This standard was first published as GL462 in 1962 and revised for the first time in July 1983. 1
Standard of the Machinery Industry of the People's Republic of China
Angle gauge blocks and accessories
Angle gauge blocks and accessories JB/T3325-1999
Replaces JB332583
This standard specifies the type and size, technical requirements, marking and packaging of angle gauge blocks with accuracy levels of 0, 1 and 2. This standard applies to block-shaped angle gauge blocks with a certain angle between measuring surfaces. Definition
This standard adopts the following definitions.
2.1 Angle gauge block
It is a triangular or quadrilateral shape, an angle measuring instrument with an angle between adjacent planes as the measuring angle and an accurate angle value. 3 Type and size
The type of angle gauge block is shown in Figure 1 (the figure is only for illustration and does not show the detailed structure). 3.1
Full hole 22
a) Type I
Figure 1 Angle gauge block
Approved by the State Bureau of Machinery Industry on May 20, 1999 and implemented on January 1, 2000
1 Angle gauge blocks that are not used in combination may not have 2 through holes 2IⅡI type angle gauge blocks are allowed to have weight-reducing holes. 3.2
JB/T3325-1999
b) Type II
Figure 1 Wan)
The top of the angle of the angle gauge block should be blunted, and the chamfer width should not be greater than 0.5mm or the fillet radius should not be greater than 0.25mm. 3.3 The nominal values ​​of the working angles of angle gauge blocks are specified in Tables 1 and 2. Table 1
Working angle graduation value
Nominal working angle value (α)
11%, 12%
15°10″
15°20
15°1，15°2\
100°30
15°0'15\
Nominal working angle value
80P—81°—100°—99°,
82°8309897
84—8596°-95°
8889—92°91°,
89°10
89°50
—8920| |tt||150″30\
86°87°94°93°
90°90°9090°
90°50
90°30
89°59'30
89.593089°5945
90°40
90°20
90°10
90°0°30\
90°0°30
900°15\
15°50
150'45°
Technical requirements
The measuring surface of the angle gauge block should be grindable. The internal stress of the angle gauge block should be eliminated.
JB/T3325-1999
Angle gauge blocks should be made of alloy tool steel GCr15, CrMn or Cr. The hardness of the angle gauge block measuring surface should not be less than 63HRC, and the maximum allowable value of surface roughness R is 0.02um. 4.4
4.5 The working angle deviation of the angle gauge block, the flatness tolerance of the measuring surface (αa) and the perpendicularity tolerance (b) of the measuring surface relative to the reference plane (A) are specified in Table 3.
Accuracy level
Working angle deviation
Flatness tolerance of measuring surface α Perpendicularity tolerance of measuring surface relative to reference plane A bμm
Note: Within 3mm from the short side of the measuring surface, the flatness tolerance is allowed to be 0.6um. 5 Marking and packaging
5.1 Angle gauge blocks shall be marked with:
a) manufacturer’s name or registered trademark;
b) nominal value of working angle.
The packaging box of angle gauge blocks shall be marked with:
a) manufacturer’s name or registered trademark;
b) product name.
5.3 Angle gauge blocks shall be treated with rust prevention and properly packaged before packaging. Products shall not be damaged during transportation due to poor packaging. 5.4 Angle gauge blocks that have been verified to meet the requirements of this standard shall be accompanied by a product certificate, which shall have the standard number and factory date of this standard. 3
JB/T3325-1999
Appendix AWww.bzxZ.net
(Appendix of the standard)
Grouping and matching of angle gauge blocks
1 Angle gauge blocks are combined and matched into four groups according to different working angle nominal values, types, numbers of blocks and accuracy grades. For specific combinations, see the provisions of Tables A1~Al
Table A4.
First group (7 pieces)
1510°
Nominal value of working angle
15°10
30°20
60°40
90°90°90°90P
2Second group (36 pieces)
Nominal value of working angle
10°,118,,20
30%,40,50%,60,70
15°20°
15115°2
15°40°
15°50
10°0°30
80°8 1°—100—99
89°10°
—8920
—8940
90~50—9040
—90°30—9P 20
90°90P90P90
Accuracy grade
Grade 1 and 2
Accuracy grade
Grade 0 and 1
JB/T3325-1999
Nominal value of working angle
15°10°, 15°20
89°10
89°30
10°0°30%| |tt||The third group (94 pieces)
15°4015°50
80°—81°—100P—99
82839897
84° 85°9695°
86°8794°93
88°89°9291°
90°90°90°90
8995930\,| |tt||90°10
90°20
Nominal value of working angle
Group 4 (7 pieces)
15, 15015\, 150”30\, 150'45\, 15189°59″30
895945\,
, 90°0'30″
90P90°90°90P
90P01 5
Accuracy level
0 level and 1 level
Accuracy level
JB/T3325—1999
Appendix B
(Standard Appendix)
Accessories of angle gauge blocks
B1 The accessories of angle gauge blocks shall include clamps, rulers, latches and screwdrivers. The types and dimensions are shown in Figures B1 to B3. A
a) Type I||t t||Spherical and round cap screw
Half-head screw
e) Type III
Lower selling
One pin
Zhongchuang head line
Spherical wind well head hall
Down board
b) Type II
A head screw
Knurled screw
Clamp
JB/T3325-1999
Figure B3 plug Pin
The accessories of B2 angle gauge blocks should be matched according to the provisions of Table B1. Table B1
Accessory name
Clamp
Screwdriver
1 piece each for Type 1 and Type III, 2 pieces for Type II
Mechanical industry standard
Angle gauge blocks and their accessories
JB/T3325-1999
Published by the Mechanical Standardization Research Institute of the Ministry of Machinery Industry Printed by the Machinery Standardization Research Institute of the Ministry of Machinery Industry (No. 2, Shouti South Road, Beijing: Postal Code 100044)*
Format 880×1230
Printing Sheet 3/4
4 Words 16,000
First Edition in August 1999
First Printing in August 1999
Print Quantity 1-500
Price 1000 Yuan
99-428
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