GB/T 2855.6-1990 Die sliding guide die seat rear guide column lower die seat

GB/T 2855.6-1990 Die sliding guide die seat rear guide column lower die seat GB/T2855.6-1990 standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Die slide guide die set
Back guide pillar lower die set
Holder for ball slide die sets for press toolsDie holder for back pillar setsSubject content and scope of application
GB/T 2855.6-90
Replaces GB 2855.6-81
This standard specifies the materials, technical conditions, structural types and specifications of the back guide pillar lower die set of the die slide guide die set. This standard applies to the die slide guide die set. 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: HT200 GB9439.
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 Administration of Technical Supervision on July 23, 1990 and implemented on May 1, 1991
3, 4 Marking examples:
GB/T2855.6—90
Die perimeter L=250mm,
B=200mm, thickness H=50mm, rear guide post lower die seat: lower die seat 250×200×50GB/T2855.620wwW.bzxz.Net
Die perimeter
GB/T 2855 .6—90
Basic dimensions
Limit deviation
Die perimeter
GB/T2855.6--90
1101195
130235
160290
Note: ①The shape and plane dimensions of the platen are determined by the manufacturer. ②When installing the B-type guide column, d (R7) is changed to d (H7) Additional instructions:
This standard is proposed by the Ministry of Machinery and Electronics Industry of the People's Republic of China. 80
Basic dimensions
Limit deviation
This standard is under the jurisdiction of the National Mold Standardization Technical Committee. 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 Cao 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. 22
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