GB/T 2855.14-1990 Die sliding guide die base four guide column lower die base

GB/T 2855.14-1990 Punch die sliding guide die base four guide column lower die base GB/T2855.14-1990 standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Sliding guide die holder
Four guide pillar lower die holder
Holder for sliding gulde die sets for press toolsDie holder for four pillar setsSubject content and scope of application
GB/T 2855.14 90
Replaces GB2855.14--81
This standard specifies the materials, technical conditions, structural types and specifications of the four guide pillar lower die holder of the sliding guide die holder for press tools. This standard applies to the sliding guide die holder for press tools. 2 Reference standards
GB/T 12446
Technical conditions for die holder parts
GB9439 Grey cast iron parts
3 Materials, technical conditions, structural types and specifications of die holder3.1 _Material: HT 200 GB 9439.
3.2 Technical conditions
According to 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 from May to January, 1991
3.4 ​​Marking example
GB/T 2855.14--90
Die perimeter L=200mm, B=160mm, thickness H=55mm, four-guide column lower die seat: lower die seat 200×160×55GB/T2855.1454
Others
Concave horizontal perimeter
500315
GB/T 2855.14—90
510375
Basic size
Limit deviation
M14—6H
M16--6H
M20--6H
M24—6H
Die perimeter
8101580
1010580
GB/T 2855.14—90
940710
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) SR
81059076100
Additional instructions:
This standard is proposed by the Ministry of Machinery and Electronics Industry of the People's Republic of China. d (R7)
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 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. 56www.bzxz.net
Limit deviation
[M24-6 H 46
-0.030M24--6H46650
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