This standard specifies the type, basic parameters and main dimensions, technical requirements, inspection rules and marking, packaging, storage, etc. of slider type universal couplings for straightening machines. JB/T 7846.1-1995 Slider type universal couplings for straightening machines JB/T7846.1-1995 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, 1996bzxZ.net
Mechanical Industry Standard of the People's Republic of China
Slider-Type Universal Coupling for Straightening Machine
1 Subject Content and Scope of Application
JB/T 7846. 1· 95
This standard specifies the type, basic parameters and main dimensions, technical requirements, inspection rules and marking, packaging, storage, etc. of slider-type universal coupling for straightening machine (hereinafter referred to as coupling). The coupling specified in this standard is mainly applicable to serial plate straightening machine, and also to other mechanical equipment. The rotary diameter is 22~140.mm. The nominal torque is 31.5~10000N·m. The axis angle a≤7°2 Reference standards
GB1144
GB3852
GB4879
GB12458
JB1465
Packaging, storage and transportation graphic symbols
Dimensions, tolerances and inspections of rectangular splines
Types and dimensions of coupling shaft holes and keyways Rust-proof packaging
Classification of mechanical couplings
Basic parameters of serial plate straightening machines
3 Types, basic parameters and main dimensions
3.1 The types, basic parameters and main dimensions of the couplings shall comply with the requirements of Figure 1 and Table 1. 3.2 Marking
3.2.1 Marking method
Gear base wall shaft hole diameter
Gear base end shaft hole type code
Slider type universal coupling
Coupling
Correcting machine end shaft hole type code
3.2.2 Marking example
Gear base end shaft hole matching length
Standard code
Correcting machine end shaft hole matching Combined length
Diameter of shaft hole at the correction machine end
Example: WHL5 slider type universal coupling, gear base end: Y-type shaft hole d,=40mm+L,=112mm; correction machine end: J-type shaft fd30mm;L,=60mm
40×112
WHL5 coupling
Approved by the Ministry of Machinery Industry on December 1, 1995
JB/T 7846.195
Implemented on 1996-07-01
JB/T 7846. 1~95
26000*0
618191
JB/T 7846.195
S6*06*58*08
2*16*02|| tt | 7846.195
4.1 The coupling shall comply with the provisions of this standard and be manufactured according to the drawings and technical documents approved by the prescribed procedures. 4.2 The material of the pin is alloy structural steel, and its mechanical properties are: a. ≥ 1170 N/mm
bs ≥ 830 N/mm;
c. Ak> 55 J.
4.3 The material of the slider and fork is alloy structural steel, and its mechanical properties are: a. ≥ 900 N/mm;
b.. ≥ 785 N/mm*;
c. Ax ≥ 54 J
4.4 The dimensional tolerance band of the inner and outer splines of the coupling shall comply with the provisions of *General Sliding Assembly Type\ in GB1144. 4.5 The shaft hole type of the coupling shall comply with the provisions of the cylindrical shaft hole (Y type) and the short cylindrical shaft hole without countersunk hole (JI type) in GB3852. The keyway shall comply with the provisions of the flat chain single key (A type). 4.6 After the coupling is assembled, it should rotate flexibly without any jamming. 4.7 The coupling should be centrally lubricated.
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 accompanied by a product quality certificate before they can be shipped. 5.3 If the subscriber has other requirements, they can negotiate with the manufacturer. 6 Marking, packaging, storage
6.1 The coupling should be printed with the model mark in a conspicuous position. 6.2 The coupling certificate should include:
Coupling model, standard number:
Manufacturer name:
Inspection pass mark:
Factory date.
6.3 After cleaning, the coupling should be rust-proofed in accordance with the provisions of GB4879. 6.4 The markings on the outer packaging box of the coupling should comply with the provisions of GB191. 6.5 The coupling should be placed in a dry environment indoors to avoid contact with acids, sulphides, organic solvents and other substances. Additional notes:
This standard was proposed and coordinated by the Xi'an Heavy Machinery Research Institute of the Ministry of Machinery Industry, and was drafted by the Taiyuan Heavy Machinery Factory. The main drafters of this standard are Liu Runlin, Wang Qiuying and Yang Cuiling.
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