JB/T 7846.2-1995 Cross-axis universal coupling for straightening machines

This standard specifies the type, basic parameters and main dimensions, technical requirements, inspection rules and marking, packaging, storage, etc. of cross-shaft universal couplings for straightening machines. JB/T 7846.2-1995 Cross-shaft universal couplings for straightening machines JB/T7846.2-1995 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T7846.1～7846.2-95
Universal Coupling for Straightening Machine
Published on December 1, 1995
Ministry of Machinery Industry of the People's Republic of China
Implemented on July 1, 1996
Mechanical Industry Standard of the People's Republic of China
Cross-Shaft Universal Coupling for Straightening Machine
Subject Content and Scope of Application
JB/T 7846.295
This standard specifies the type, basic parameters and main dimensions, technical requirements, inspection rules and marking, packaging, storage, etc. of cross-axis universal couplings for straightening machines (hereinafter referred to as couplings). The couplings specified in this standard are mainly suitable for serial plate straightening machines and other machines and equipment. The rotary diameter is 46~150mm. The nominal torque is 90~6300N·m, and the axis angle a≤10°. 2 Reference standards
GB114 4
GB3852
GB4879
GB12458
JB1465
Packaging, storage and transportation pictorial symbols
Dimensions, tolerances and inspections of rectangular splines
Types and dimensions of coupling shaft holes and key groovesRust-proof packaging
Classification of mechanical couplings
Basic parameters of serial plate straightening machines
3Types, basic parameters and main dimensions
Coupling The type, basic parameters and main dimensions shall conform to the provisions of Figure 1 and Table 1. 3.2 Marking
3.2.1 Marking method
Gear machine base end shaft hole diameter
Gear machine base end shaft hole type code
Cross shaft type universal coupling
Coupling
Corrector end shaft hole type code
3.2.2 Marking example
Gear machine base end shaft hole matching length
Standard code
Corrector Machine end shaft hole matching length
Correction machine end shaft hole diameter
Example: WSL2 cross shaft universal coupling, gear machine base end: Y-type shaft hole, d, = 40mm; L, = 112mm; correction machine end: J: type shaft hole. d, = 30mm. L60mm
40×112
WSL2 coupling
J, 30×60
Approved by the Ministry of Machinery Industry on December 1, 1995
JB/T 7846.295
1996-07-01implemented
JB/T7846.2-95
86S6206
886208Www.bzxZ.net
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JB/T 7846.295
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4 Technical requirements
JB/T7846.295
4.1 The coupling shall conform to the provisions of this standard and be manufactured according to the drawings and technical documents approved through the prescribed procedures. 4.2 The material of the cross shaft is alloy structural steel, and its mechanical properties are: a.%>1080N/mm
ba≥835N/mm*
c.Ak≥55 J.
4.3 The material of the fork head is alloy structural steel, and its mechanical properties are: 8.0≥700N/mm;
b.,≥500N/mm*
Ak≥47J.
4.4 The dimensional tolerance zone of the inner and outer splines of the coupling shall comply with the provisions of *Generally used sliding assembly type\ in GB1144. 4.5 The coupling shaft hole type shall comply with the provisions of GB3852 long four-cylindrical shaft hole-Y type and short cylindrical shaft hole without countersunk hole-J type. The key shall comply with the provisions of flat key single keyway-A type. 4.6 After the coupling is assembled, it shall rotate flexibly without any jamming. 5 Inspection rules
5.1 The coupling manufacturer shall inspect each item according to the technical requirements and design drawings specified in Chapter 4 of this standard. 5.2 All couplings shall be inspected and qualified by the manufacturer's product quality inspection department, and shall be shipped only with a product quality certificate. 5.3 If the subscriber has other requirements, it can be negotiated with the manufacturer. 6 Marking, packaging, storage
The coupling shall be printed with the model mark in a conspicuous position. 6.1
6.2 The coupling certificate shall include:
Coupling model. Standard number:
Manufacturer name;
Inspection pass mark:
d. Factory date.
6.3 After cleaning, the coupling shall be packed for rust prevention in accordance with the provisions of GB4879. 6.4 The marking on the outer packaging box of the coupling shall comply with the provisions of GB191. 6.5 The coupling shall be placed in a dry environment indoors to avoid contact with acids, alkalis, organic solvents and other substances. Additional remarks:
This standard was proposed and managed by the Xi'an Heavy Machinery Research Institute of the Ministry of Machinery Industry. This standard was drafted by Taiyuan Heavy Machinery Plant. The main drafters of this standard are Liu Runlin, Wang Qiuying, Yang Cuiling and Wang Xiaoling.
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