This standard specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of slitting machines. This standard applies to shearing machines that cut wide steel plates with a thickness of 0.2~2mm into narrow strips. JB/T 6458-1992 Technical conditions for thin plate slitting machines JB/T6458-1992 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
Technical Conditions for Thin Plate Slitting Machines
1 Subject Content and Scope of Application
JB/T6458—1992
This standard specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of slitting machines. This standard applies to shearing machines (hereinafter referred to as slitting machines) that cut wide steel plates with a thickness of 0.2 to 2 mm into narrow strips. 2 Reference standards
Electrical equipment
Electrical equipment
Electrical equipment
Electrical equipment
Electrical equipment
Electrical equipment
Electrical equipment
ZBK90001
Electrical equipment
ZBJ50004
General technical conditions for cast iron parts
General technical conditions for forgings
General technical conditions for welded parts
General for machining Technical conditions
General technical conditions for heat treatment
General technical conditions for assembly
General technical conditions for painting
General technical conditions for control equipment
Determination of noise sound pressure level of metal cutting machine tools GB/T13384 General technical conditions for packaging of electromechanical products GB191
3 Technical requirements
3.1 Basic requirements
Packaging storage and transportation signs
3.1.1 The slitting machine shall comply with this standard and be manufactured according to the design drawings and documents approved by the prescribed procedures. 3.1.2 The basic parameters and structure of the slitting machine shall be designed according to user requirements and accepted according to the technical agreement, but the following requirements shall be met. 3.1.2.1 The operation and adjustment of the slitting machine shall be safe and convenient. 3.1.2.2 The installation, replacement and adjustment of the slitting shears shall be convenient, safe and reliable. 3.1.3 The slitting machine shall be divided into three accuracy levels of A, B and C as needed. 3.2 Accuracy
The geometric accuracy and working accuracy of the slitting machine shall comply with the requirements of Appendix A. 3.3 Parts Processing
When there are no requirements in the drawings and this standard, the processing of parts shall be carried out in accordance with the following standards. 3.3.1 Cast iron parts shall comply with JB4328.1.
3.3.2 Forgings shall comply with JB4328.4.
3.3.3 Welded parts shall comply with JB4328.5.
3.3.4 Machining shall comply with JB4328.6. 3.3.5 Heat treatment shall comply with JB4328.7.
3.4 ​​Assembly
The assembly of the slitting machine shall comply with JB4328.8. Approved by the Ministry of Machinery and Electronics Industry on August 6, 1992, 186
Implemented on January 1, 1993
3.5 Noise
JB/T64581992
The transmission system of the slitting machine should run smoothly, and the noise of idling operation shall not exceed 85dB(A), and shall not change periodically. 3.6 Electrical system
The electrical system of the slitting machine shall comply with ZBK90001. 3.7 Appearance
The exposed machined surface of the slitting machine shall not have obvious hammer marks or bumps, the welds of the cover and other parts shall be flat, and there shall be no obvious misalignment on the joint surfaces.
3.8 Painting
The painting of the slitting machine shall be carried out in accordance with JB4328.9, and the surface quality of the paint film shall be level 1. 4 Test methods and inspection rules
4.1 Test methods
4.1.1 Idle running test
The idle running test shall not be less than 2h. The test shall be carried out continuously from low speed to high speed, and the running stability and action sensitivity shall be observed during operation. 4.1.2 Bearing temperature rise inspection
Immediately after idling, use a point thermometer to measure the highest measurable part of the bearing where the heat is the highest. The maximum bearing temperature shall not exceed 80C, and the temperature rise shall be calculated and shall not exceed 35℃.
4.1.3 Noise measurement
Noise measurement shall be carried out at the highest speed in accordance with ZBJ50004. 4.1.4 Structural performance and dimensional parameter inspection
Inspect with conventional measuring tools according to the designed performance and dimensional parameters. 4.1.5 Geometric accuracy inspection
Geometric accuracy inspection shall be carried out in accordance with Appendix A2.1. 4.1.6 Working accuracy inspection
Working accuracy inspection shall be carried out in accordance with Appendix A2.2. 4.1.7 Electrical system test
Electrical system test shall be carried out in accordance with ZBK90001. 4.1.8 Appearance and paint inspection
Appearance and paint shall be inspected by visual inspection.
4.2 Inspection rules
4.2.1 The slitting machine shall be inspected and qualified by the inspection department of the manufacturer in accordance with this standard before it can be shipped out of the factory. 4.2.2 When the product or structure or process of the new product transferred to the factory has a major change, a type test shall be carried out. 4.2.3 The factory test items shall be carried out in accordance with 4.1.1, 4.1.2, 4.1.3, 4.1.5, 4.1.7 and 4.1.8. 4.2.4 The type test shall be carried out in accordance with all items of technical requirements in Chapter 3 and all test items in Chapter 4. 5 Marking, packaging, transportation, storage
5.1 Marking
The slitting machine should be marked with the following:
Model and accuracy grade;
Name,
Factory number:
Date of manufacture;
Manufacturer name:
5.2 Packaging
JB/T6458-1992
Before packaging, the unpainted exposed processing surface should be coated with anti-rust grease and wrapped with oil paper. Packaging should be carried out in accordance with GB/T13384 and packaging drawings. The packaging and transportation markings should comply with the provisions of GB191. The following documents should be carried with you:
Instruction manual;
Certificate of conformity;
Packing list.
5.3 Transportation, storage
The shipment of the slitting machine should comply with the relevant regulations on transportation. The slitting machine should be stored in a well-ventilated warehouse. AI
Precision of slitting machine
JB/T6458—1992
Appendix A
Precision and inspection method of slitting machine
(Supplement)
The geometric accuracy of slitting machine shall comply with the provisions of Table A1. Table A1
Radial motion of upper and lower scissor shafts
Parallelism of upper and lower scissor shafts
Axial motion of upper and lower scissor shafts
Maximum shear width
>1000~1500
≤1000
>1000~1500bzxZ.net
A1.2 The working accuracy of slitting machine shall comply with the provisions of Table A2. Precision Items
Strip Shearing Edge Straightness
Strip Shearing Edge Burr Height
Slitting Shearing Machine Precision Inspection Method
A2.1 Inspection Method for Geometric Accuracy
A2.1.1 Inspection of Radial Runout of Upper and Lower Scissor Shafts0. 02
Touch and make the indicator probe perpendicular to the shaft surface, slowly idle the shaft for one circle, and measure the indicator reading difference (Figure A1). Measure at the left, middle, and right positions of the upper and lower shafts, and measure the maximum indicator reading difference. ?
A2.1.2 Inspection of Parallelism of Upper and Lower Scissor Shafts The parallelism of the upper and lower scissor shafts needs to be inspected in the plane passing through the two axis lines and in the direction perpendicular to the plane. Inspect in the plane passing through the two axes
JB/T6458-1992
Install the indicator on a V-groove bracket that is adapted to the diameter of the lower shaft, and the probe touches the upper shaft surface vertically. The bracket slides along the lower shaft surface and swings in the direction perpendicular to the axis (Figure A2). Measure the minimum distance between the two axes, and the maximum difference in the minimum distance is used as the measurement. When the upper and lower wheelbases are small and cannot be inspected with an indicator, a block gauge can be used for inspection (Figure A3). Figure A2
A2.1.2.2 Inspect in the direction perpendicular to the plane passing through the two axes Figure A3
Place the level on the short side of the special angle ruler and fix it. The working surface of the short side of the angle ruler contacts the upper generatrix of the upper shaft, and the other working surface contacts the side generatrix of the upper and lower shafts (Figure A4). Measure the level readings at the left, middle, and right parts of the shaft, and calculate the parallelism △ according to formula (A1). n·c
Where: A- measured parallelism error, mm; maximum difference in level readings;
C——scale value of the level,
L—distance between the two axis lines, mm.
A2.1.3 Inspection of axial movement
Place an appropriate steel ball in the top hole of the protruding end of the shaft, and use the indicator probe equipped with a flat cap to contact the steel ball. When the shaft rotates one turn, measure the difference in indicator readings. For shafts without axial pressure structures, appropriate axial force should be applied during inspection. A2.2 Inspection of the working accuracy of the longitudinal shearing machine
The working accuracy of the longitudinal shearing machine requires the longitudinal shearing machine to be installed on a reliable foundation, manually feed and shear or connect it with other equipment to form a production line, and perform actual longitudinal shearing tests to inspect the cut strips. A2.2.1 Installation requirements of scissors
The installation of scissors on the shaft shall comply with Table A3.190
End face circular runout
Radial circular runout
A2.2.2 Inspection of the straightness of the sheared edge of strip
JB/T6458—1992
The straightness of the sheared edge is to take 1m long sections of material on the left, middle and right when the number of strips is the largest at the same time. The inspected sections shall not be less than 6. Place the sections on the inspection platform, stick a 1m flat ruler on the sheared edge, and inspect with a feeler gauge. A2.2.3 Inspection of the height of the sheared edge burr
The height of the sheared edge burr shall be measured routinely with a dry ruler. The inspection shall be conducted every 500mm and shall not be less than 5 times. The maximum value shall be the burr height. Additional remarks:
This standard is proposed and managed by the Shenyang Electrical Special Equipment Research Institute of the Ministry of Machinery and Electronics Industry. This standard was drafted by the Shenyang Electrical Machinery Factory. 191
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