JB/T 3323-2001 This standard is equivalent to JIS B 7506:1989 "Gauge Block Accessories". This standard is a revision of JB/T 3323-1983 "Gauge Block Accessories". The revised standard clearly specifies the nominal size range, grinding surface and other technical indicators. This standard specifies the type and basic size, technical requirements, marking and packaging of gauge block accessories. This standard is applicable to gauge block accessories for combined gauge blocks with nominal lengths ranging from 0.5mm to 330mm. This standard was first issued in July 1983, and this is the first revision. JB/T 3323-2001 Gauge Block Accessories JB/T3323-2001 Standard download decompression password: www.bzxz.net

ICS25.060.20
Machinery Industry Standard of the People's Republic of China
JB/T3323—2001
Accessories for gauge blocks
Promulgated on 2001-06-04
China Machinery Industry Federation
Implementation on 2001-10-01
JB/T3323—2001
This standard is a revision of JB/T33231983 "Accessories for Gauge Blocks" based on Japanese Industrial Standard JIS B750689 "Accessories for Gauge Blocks". Its main technical contents are equivalent to JIS B7506—1989. Compared with JB/T3323-1983, this standard has the following major changes: 1. The nominal size range of the gauge block accessory combination is clearly specified. 2. In the type drawing, the grinding surfaces of the clamp block, clamping slide and base are clearly marked. 3. The flatness is equivalent to the Japanese standard except for the base and the arc-shaped clamp block ≤10. 4. The Φ12 hole required by the clamp block is changed to Φ10 according to the latest gauge block standard. 5. All technical requirements are uniformly specified in Chapter 3. 6. The thread line in the figure is changed to a thin solid line according to the standard, and some dimension markings are modified. 7. The base support surface in the original standard is changed to the bottom surface of the base. In order to make the stability better, the height dimension is set to 25mm±0.005mm. 8. The surface finish in the original standard is changed to the surface roughness Ra value. 9. The gauge block accessories are changed from Rockwell hardness HRC to Vickers HV hardness value. This standard will replace JB/T33231983 from the date of implementation. This standard is proposed and managed by the National Technical Committee for Standardization of Gauges and Instruments. The responsible drafting unit of this standard: Chengdu Tool Research Institute. The main drafter of this standard: Chen Ling.
This standard was first issued in July 1983, and this is the first revision. Scope
Mechanical Industry Standard of the People's Republic of China
Gauge Block Accessoriesbzxz.net
Acessoriesforgaugeblocks
This standard specifies the type and basic dimensions, technical requirements, marking and packaging of gauge block accessories. This standard applies to gauge block accessories for combination gauge blocks with nominal lengths ranging from 0.5mm to 330mm. 2 Type and basic dimensions
JB/T3323—2001
Replaces JB/T33231983
2.1 Gauge block accessories include holder (A type, B type): clamping block (arc-shaped clamping block, top-shaped clamping block, marking clamping block, rectangular clamping block): base: clamping slide: triangular ruler and clamp. Its type is shown in Figure 1 (the figure is only for illustration and does not show the detailed structure). Approved by China Machinery Industry Federation on June 4, 2001. Implementation on October 1, 2001. Rectangular clamp. Clamping slide. JB/T3323—2001. Arc clamp. Center clamp. Measuring surface. Grinding surface. Grinding surface. Grinding surface. Marking clamp. Triangular ruler. Type of gauge block accessories. Specifications, measuring range and dimensions of the clamp are shown in Table 1. The specifications and dimensions of arc-shaped clamps, top-shaped clamps, marking clamps, and rectangular clamps are shown in Table 2. The dimensions of the base, clamping slide, triangular ruler, and clamp are shown in Table 3. Clamp type
Clamp name
Arc-shaped clamp
Top-shaped clamp
Marking clamp
Rectangular clamp
Accessory name
Clamping slide
Triangular ruler
JB/T3323-2001
1The base is only for A and B type clamps.
Measuring range
100~210
200-330
100-200
25±0.005
2The clamp is suitable for clamping gauge blocks with a nominal size greater than 100mm. 3Technical requirements
0.20-0.30
The working surfaces of gauge block accessories shall not have defects such as cracks, scratches, bumps, rust, burrs, etc. that affect the appearance and performance. The structure of the clamp and the clamp should ensure reliable clamping of the gauge block and the clamping block, and should not be loose. 3.2
JB/T3323-2001
The structure of the clamp should ensure that the gauge block with a nominal length less than 25mm can be clamped between the two gauge blocks and the clamping slide. 3.3 When all the clamps, triangular rulers and bases are assembled, the upper pads should be made of wear-resistant materials such as alloy tool steel, and the base should be made of steel or cast iron.
3.4 ​​The hardness of the grinding surface of all clamps and the upper pads of the base should not be less than 800HV (~63HRC); the hardness of the working edge surface of the triangular ruler should not be less than 713HV (~60HRC); the hardness of the grinding surface of the clamping slide should not be less than 561HV (~53HRC). 3.5 Surface roughness of the working surface of the gauge block accessories 3.5.1 The surface roughness of the grinding surface of the base, clamping slide and clamp is 0.025μm. 3.5.2 The surface roughness of the working edge of the triangular ruler is 0.05um. 3.5.3 The surface roughness of the bottom surface of the base is Ra 0.4um, and only concave 3.6 The flatness of the clamp, slider, base grinding surface and the bottom surface of the base, the parallelism of the clamp measuring surface relative to the grinding surface, the two grinding surfaces of the slider, and the base grinding surface relative to the bottom surface shall comply with the provisions of Table 4. Table 4
Circular arc clamp
Rectangular clamp
Top clamp
Scribing clamp
Bottom surface of base
Base grinding surface
Flatness tolerance
Note: Flatness tolerance is not calculated within 05mm from the edge of the plane: 3.7
The straightness tolerance of the working edge of the three-edged ruler shall not exceed 0.003mm. 3.8The displacement of the vertex of the A-type top clamp to its grinding surface shall not exceed 0.01mm. The blunting of the vertex of the top-type clamping block should not exceed 0.05mm. 3.9
The dimensional deviation between the measuring surfaces of the paired arc-shaped clamping blocks should not exceed 0.001mm. All clamping blocks should eliminate internal stress.
4 Marking and packaging
The specifications and dimensions, manufacturer's name or registered trademark should be marked on the clamp and arc-shaped clamping block. Parallelism tolerance
4.2 The base, clamp, rectangular clamping block, top-type clamping block, marking clamping block and triangular ruler should be marked with the manufacturer's name or registered trademark. 4.3 The packaging box of the gauge block accessories should be marked with the product name, manufacturer's name or registered trademark. 4.4
The gauge block accessories should be treated with rust prevention before packaging and should be well packaged. The products should not be damaged during transportation due to poor packaging. The gauge block accessories should be accompanied by a product certificate, which should be marked with the standard number and factory date of the adopted product standard. 4.5
Mechanical Industry Standard
Gauge Block Accessories
JB/T3323—2001
Published and issued by the China Academy of Mechanical Science
Printed by the China Academy of Mechanical Science
(No. 2 Shouti South Road, Beijing: Postal Code 100044)*
Format 880X12301/16Printing Sheet 1/2
2Word Count 1Q000
First Edition in September 2001First Printing in September 2001Price 1000 Yuan
Print Quantity 1-500
2001-092
Mechanical Industry Standard Service Network: http:/kvwwJB.ac.cn100
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