GB/T 2855.9-1990 Die sliding guide die seat intermediate guide column upper die seat

GB/T 2855.9-1990 Die sliding guide die seat intermediate guide pillar upper die seat GB/T2855.9-1990 standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Sliding guide die sets for punches
Middle guide pillar upper die sets
Holder for sliding guide die sets for press dless toolsPunch holder for center pillar setsSubject content and scope of application
GB/T 2855.9 --90
GB2855.9 --81
This standard specifies the materials, technical conditions, structural types and specifications of the middle guide rod upper die sets for punch sliding guide die sets. This standard applies to punch sliding guide die sets. 2 Reference standards
GB/T12446 Technical conditions for die set parts GB9439 Grey cast iron parts
3 Materials, technical conditions, structural types and specifications of die sets3.1 Material: HT200GB9439.
3.2 Technical conditions shall be in accordance with the provisions of GB/T12446. 3.3 Structural types and specifications are shown in the figure and table.
Approved by the State Bureau of Technical Supervision on July 23, 1990, implemented on May 1, 1991bZxz.net
GB/T 2855.990
L×B200×16)
The rest 9
3.4 ​​Marking example:
GB/T 2855 .9 --90
LXB>200×160
Die perimeter L=200mm, B=160mm, thickness H=45mm, middle guide column upper die seat: 200×160×45GB/T2855.9
Upper die seat
The rest 9
[called die perimeter
GB/T 2855.9--90
Basic size
1703860
D, (H7)
Limit deviation) Basic size limit deviation
Die perimeter
500500
GB/T2855.9--90
360230
260210370|270310
325260445330
410325550400
510|510|655590
Note: The shape and plane size of the press plate are determined by the manufacturer. D (H7)
Basic size limit deviation
D, (H7)
Basic size limit deviation
M16-28
GB/T2855.9—90
Additional remarks:
This standard is proposed by the Ministry of Machinery and Electronics Industry of the People's Republic of China. This standard is under the jurisdiction of the National Technical Committee for Mold Standardization. This standard was drafted by the Mold Branch of Guilin Electric Science Research Institute of the Ministry of Machinery and Electronics Industry. The main drafters of this standard are Wang Huachang and Qin Guangwei. This standard is entrusted to the Mold Branch of Guilin Electric Science Research Institute of the Ministry of Machinery and Electronics Industry for interpretation. 34
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