GB/T 2855.7-1990 Narrow upper die seat with rear guide pin for die slide guide seat

This standard specifies the materials, technical conditions, structural types and specifications of the narrow upper die seat with rear guide pins for the die sliding guide die seat. This standard applies to the die sliding guide die frame. GB/T 2855.7-1990 Narrow upper die seat with rear guide pins for the die sliding guide die seat GB/T2855.7-1990 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Sliding guide die sets for press tools
Narrow upper die set with rear guide pin
Holder for sliding guide die sets for press toolsPunch holder for back plllar sets (narrow)Subject content and scope of application
GB/T 2855.7-90
Replaces GB2855.7-81www.bzxz.net
This standard specifies the materials, technical conditions, structural types and specifications of narrow upper die sets with rear guide pins for press tools sliding guide die sets. This standard applies to sliding guide die sets for press tools. 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: HT 200 GB 9439.
8.2 Technical conditions shall be in accordance with the provisions of GB/T12446. 8.3 The structural type and specifications are shown in the table.
Approved by the State Administration of Technical Supervision on July 23, 1990 and implemented on May 1, 1991
3.4 ​​Marking example:
GB/T2855.7-90
Die perimeter L=315mm, B=100mm, thickness H=45mm, rear guide column narrow upper die seat: upper die seat 315×100×45GB/T2855.72-1
Die perimeter
GB/T2855.7—90
The shape and plane dimensions of the platen are determined by the manufacturer. Note:
Additional remarks:
This standard is proposed by the Ministry of Machinery and Electronics Industry of the People's Republic of China. D(H7)
Basic dimensions
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 Tu Huachang and Yu 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. Limit Deviation
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