GB/T 2855.8-1990 Narrow lower die seat with rear guide pin for die slide guide seat

GB/T 2855.8-1990 Punch die sliding guide die seat rear guide column narrow lower die seat GB/T2855.8-1990 standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Sliding guide die sets for punching dies
Narrow die sets with back guide pillars
Holder for slidlng guide die sets for press toolsDie holder for back pillar sets (narrow)Subject content and scope of applicationwwW.bzxz.Net
GB/T 2855 .8 90
Replaces GB2855.8-81
This standard specifies the materials, technical conditions, structural types and specifications of narrow die sets with back guide pillars for punching die sliding guide die sets. This standard applies to sliding guide die sets for punching dies. Reference standards
GB/T12446 Technical conditions for die frame parts GB9439 Grey cast iron parts
Material, technical conditions, structural type and specifications of die base 3
3.1 Material: HT200 GB9439
3.2 Technical conditions shall be in accordance with the provisions of GB/T12446. 3.3 Structural type and specifications are shown in the figure and table.
Approved by the State Administration of Technical Supervision on July 23, 199026
Implemented on May 1, 1991
R10 ~ 20
3.4 ​​Marking example:
GB/T 2855.8—90
Die perimeter L=315mm, B=100mm, thickness H=55mm, rear guide column narrow lower die seat: lower die seat 315×100×55GB/T2855.827
[]Die perimeter
GB/T2855.8—-
Note: (①The shape and plane dimensions of the platen are determined by the manufacturer. ②When installing B-type guide columns, d (R7) is changed to d (H7). Additional instructions ：
This standard was proposed by the Ministry of Machinery and Electronics Industry of the People's Republic of China. d(RT)
Basic scale
Limit deviation
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. d.
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. 28
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