JB/T 1769-1999 JB/T 1769-1999 Closed single and double point trimming press types and basic parameters JB/T1769-1999 Standard download decompression password: www.bzxz.net

ICS25.120.10
Machinery Industry Standard of the People's Republic of China
JB/T1769-1999
Closed Single-point and Double-point Trimming Presses
Types and Basic Parameters
Published on 1999-05-14
National Bureau of Machinery Industry
Implemented on 2000-01-01
JB/T1769—1999
This standard is a revision of JB176976 "Closed Single-point and Double-point Trimming Presses Types and Basic Parameters". The technical content of this standard is basically consistent with that of JB1769—76, and it has only been re-edited according to relevant regulations. This standard will be implemented from January 1, 2000
This standard replaces JB176976 from the date of implementation. Appendix A of this standard is the appendix of the standard.
This standard is proposed and managed by the National Technical Committee for Standardization of Forging Machinery. The drafting unit of this standard: Xianfeng Machine Tool Factory. This standard was first issued in June 1976.
1 Scope
Machinery Industry Standard of the People's Republic of China
Closed Single-point and Double-point Trimming Presses
Types and Basic Parameters
This standard specifies the types and basic parameters of closed single-point and double-point trimming presses. This standard is applicable to newly designed closed single-point and double-point trimming presses. 2 Types
JB/T1769—1999
Replaces JB176976
The types of trimming presses are divided into closed single-point trimming presses (Figure 1) and closed double-point trimming presses (Figure 2). Figure 1
3 Basic parameters
3.1 The main parameter of closed single-point and double-point trimming presses is nominal force. Approved by the State Bureau of Machinery Industry on May 14, 1999 and implemented on January 1, 2000
JB/T1769-1999
The basic parameters of closed single-point and double-point trimming presses shall comply with the provisions of Table 1. Table 1
Basic parameters of closed single-point and double-point trimming presses Nominal force P
Nominal pressure stroke S
Slider stroke S
Number of slider strokes n
Maximum die height H
Die height adjustment amount AHmm
Front and rear dimensions of slider bottom Bmm
Front and rear dimensions of worktable B
Left and right dimensions of worktable
The groove type and size of the fastening die of the worktable and slider bottom on the closed single-point and
double-point trimming presses shall comply with the provisions of Appendix A (Appendix 3.3
of the standard).
JB/T1769-1999
Appendix A
(Appendix of the standard)
Groove type and size of the fastening die for the worktable and the bottom of the slide on the closed single-point and double-point trimming pressesA1The groove type of the fastening die for the worktable on the closed single-point trimming press is specified as four T-slots (Figure A1), and the groove type size and fastening screws shall comply with the provisions of Table A1.
Nominal force
Fastening screw diameter
Fastening size of the die on the worktable of the closed single-point trimming press2000
The groove type of the fastening die for the bottom of the slide on the closed single-point trimming press is specified as a dovetail groove and two T-slots (Figure A2), and the groove type size shall comply with the provisions of Table A2. The diameter of the fastening screws shall comply with the requirements of Table AI A
Nominal force
Closed single-point trimming press slide bottom mold fastening dimensions 2000
105±0.25
125±0.25
The working table and slide bottom mold fastening groove types of the closed double-point trimming press are both T-slots. 10000
130±0.25
Mechanical industry standard
Closed single and double point trimming press
Type and basic parameters
JB/T1769—1999
Published by the Machinery Standardization Research Institute of the Ministry of Machinery Industry Printed by the Machinery Standardization Research Institute of the Ministry of Machinery Industry (No. 2 Shouti South Road, Beijing, zip code 100044)*
1/16 Printing sheet 1/2 Number of words 8000
Format 880×1230
First edition in September 1999
First printing in September 1999
Print run 1—500
Price 500 yuan
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