JB/T 8017-1999 Machine tool fixture parts and components directional keys

JB/T 8017-1999 This standard is a revision of JB/T 8017-95 "Directional Keys 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 directional keys with specifications of 18~60mm. This standard was first issued in 1981 as GB 2207-80, first revised to GB/T 2207-91 on April 30, 1991, and adjusted to JB/T 8017-95 in April 1996. JB/T 8017-1999 Directional Keys for Machine Tool Fixture Parts and Components JB/T8017-1999 Standard download decompression password: www.bzxz.net

IC5 28.060.41
Machinery Industry Standard of the People's Republic of China
Parts and components of jigs and fixtures
The parts and units of jigs and fixtures1999-08-06Promulgated
State Machinery Industry Bureau
Implementation on 2000-01-01
Machinery Industry Standard of the People's Republic of China
Parts and components of jigs and fixturesDirectional keys
The parts aud units nf jigsand fixiuresDirectional keys
This standard specifies the directional chains with a specification of 1R~mm. 2 Reference standards
JBTH017—1999
The provisions contained in the following standards, through the use of words in this standard, constitute the provisions of this standard. When this standard was published, the versions shown were all valid. All standards will be revised: the parties using the standard should discuss the possibility of using the latest version of the following standards. GDT699-1988 High-quality carbon case drill JB/T8044-1999: Machine tool clamps and components technical requirements 3 dimensions
The dimensions are as follows and shown.
Approved by the State Machinery Industry Bureau in 1999-0%-06 and implemented in 20H-01-01
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JE/T B017—1999
T-shaped sugar should be
size, the maximum width of the seat is 0.5mm, and the tolerance zone is h6 or h8. The dimensions in brackets are as small as possible, 1.
4 Technical conditions
4.1 Material: 45 according to GB/T699,
4.2 Heat treatment: 40-45HRC.
4.3 Its technical conditions and prices are in accordance with the provisions of [B/8M4, S mark
5.1 Marking example:
B-241mm1, B,=18imm1, directional chain with tolerance zone h: directional key 24×1Bh6JR/T8n:7---1999 pieces
English national
limited to H:
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