JB/T 8009.4-1999 This standard is a revision of JB/T 8009.4-95 "Smooth Surface Clamps for Machine Tool Fixture Parts and Components". During the revision, only editorial changes were made according to relevant regulations, and the technical content remained unchanged. This standard specifies arc-shaped clamps with a length of 32 to 125 mm and a width of 10 to 20 mm. This standard was first issued in 1981 as GB 2174-80, and was first revised to GB/T 2174-91 on April 30, 1991, and adjusted to JB/T 8009.4-95 in April 1996. JB/T 8009.4-1999 Arc-shaped Clamps for Machine Tool Fixture Parts and Components JB/T8009.4-1999 Standard download decompression password: www.bzxz.net
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ICS 25. 080. 01 Mechanical Industry Standard of the People's Republic of China The parts and units of jigs and fixtures The parts and units of jigs and fixtures1999-08-06Published State Machinery Industry Bureau Implementation on 2000-01-01 Mechanical Industry Standard of the People's Republic of Chinawww.bzxz.net Parts and units of jigs and fixturesCurve holddown This standard specifies the curved holddown with a length of 32~125mm and a width of 10~20mm. Cited Standards JB/T8009.4—1999 Replaces JB/T8009.4—1995 The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T 699—1988 JB/T8044—1999 3 Dimensions Technical conditions for high-quality carbon structural steel Technical requirements for machine tool fixture parts and components The dimensions are shown in the following figure and table. Approved by the State Machinery Industry Bureau on August 6, 199964 Implemented on January 1, 2000 JB/T 8009.4—1999 Dimensions of accessories 4 Technical conditions Limit deviations all 4.1 Material: 45 in accordance with the provisions of GB/T699. 4.2 Heat treatment: 35~40HRC, JB/T8009.4—1999 4.3 Other technical conditions in accordance with the provisions of JB/T8044. 5 Marking 5.1 Marking example: A-type arc-shaped pressure block with B=14mm: L=60mm, Pressing block A60x14JB/T8009.4-1999 Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.