JB/T 3581-1999 Technical requirements for automatic spring coiling machines

JB/T 3851-1999 JB/T 3581-1999 Technical conditions for automatic spring coiling machines JB/T3581-1999 Standard download decompression password: www.bzxz.net

ICS25.120.10
Machinery Industry Standard of the People's Republic of China
JB/T3581-1999
Technical Conditions for Automatic Spring Coiling Machines
Published on 1999-05-14
National Bureau of Machinery Industry
Implementation on 2000-01-01
JB/T3581—1999
This standard is a revision of JB3581.284 "Technical Conditions for Automatic Spring Coiling Machines". Compared with JB3581.284, the main differences between this standard and JB3581.284 are:
- The requirements for noise have been modified according to relevant standards;- The requirements for free repair period have been deleted:- Appendix A has been deleted;
- The legal measurement units have been unified.
This standard shall be implemented from January 1, 2000
This standard shall replace JB3581.2-84 from the date of implementation. This standard is proposed and managed by the National Technical Committee for Standardization of Forging Machinery. The drafting unit of this standard is Luoyang Machine Tool Factory. This standard was first issued in February 1984.
1 Scope
Machinery Industry Standard of the People's Republic of China
Technical Conditions for Automatic Spring Coiling Machines
This standard specifies the technical requirements, test methods and inspection rules for automatic spring coiling machines. This standard applies to cold-rolled automatic spring coiling machines (hereinafter referred to as spring coiling machines). 2 Referenced Standards
JB/T3581-1999
Replaces JB3581.282www.bzxz.net
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are all valid. All standards are subject to revision. Parties using this standard should explore the possibility of using the latest version of the following standards: GB 191—1990
GB/T 5226.1—1996
GB/T14331—1993
JB/T1829—1997
JB/T8356.1—1996
JB99721999
3 Technical requirements
3.1 General requirements
Packaging, storage and transportation pictorial symbols
Industrial machinery and electrical equipment Part 1: General technical conditions Automatic spring winding machine accuracy
General technical conditions for forging machinery
Technical conditions for machine tool packaging
Noise limit of spring winding machine, thread rolling machine and nail making machine 3.1.1 Spring winding machines shall comply with this standard and be manufactured according to drawings and technical documents approved through prescribed procedures. 3.1.2 The spring coiling machine should be equipped with necessary accessories and spare wearing parts. Special accessories shall be agreed upon by the user and the manufacturer and shall be supplied randomly or separately. Accessories and tools shall generally be marked with corresponding marks or specifications. 3.1.3 The spring coiling machine shall meet the safety technical requirements. For example, rotating gears and pulleys that are exposed and may affect personal safety shall be equipped with protective devices, parts that may automatically loosen shall be equipped with reliable anti-loosening devices, and arrows indicating the direction of rotation shall be marked at appropriate locations when the motor is required to rotate in one direction.
3.1.4 The manufacturer shall ensure that the purchased parts for the spring coiling machine meet the current standards or obtain their certificates of conformity, and shall be tested for operation at the same time as the spring coiling machine.
3.1.5 The spring coiling machine shall be equipped with various signs and labels such as lubrication, operation (mechanical, electrical) and safety. All signs and labels shall remain clear for a long time and meet the requirements of current standards. 3.2 Quality of castings, forgings and welded parts
3.2.1 Iron castings, steel castings, forgings, welded parts and non-ferrous metal castings shall comply with the current standards. If there are no standards, they shall comply with the technical requirements of the drawings and process documents. Important castings, forgings and welded parts shall obtain a certificate of conformity. The surface of the casting shall be flat, and the straightness deviation of the non-machined surface shall not exceed 2mm in any 600mm length in the same casting plane. 3.2.2 The molding sand and adhesive on the casting shall be carefully cleaned, and the flash, burrs, gates and risers shall be scraped flat. Castings used as oil storage tanks shall be carefully cleaned and there shall be no oil leakage. The surface of unprocessed castings shall be painted with anti-rust paint. Approved by the State Bureau of Machinery Industry on May 14, 1999 and implemented on January 1, 2000
JB/T3581-1999
3.2.3 There shall be no cracks in the castings. The joint surface of the casting and the exposed processing surface of the machine tool should not have sand holes, pores, shrinkage. The surfaces of bearings, thrust rings, guide rails, etc. should not have cold shuts, slag inclusions and segregation. For casting defects that do not affect the quality of use, it is allowed to be repaired according to relevant regulations, but the sliding (rolling) guide surface, etc. shall not be welded. 3.2.4 Preliminary heat treatment should be carried out for important castings and forgings such as the bed, machine base, slide block, cutter seat, mandrel seat, reducer lever, feed roller, large gear, etc.
3.3 Processing and assembly quality
3.3.1 The scraping points on the working surface of the guide rail and the bearing should be uniform, and the matching parts (or inspection plates, inspection rods) should be used for color inspection. The average calculation within an area of ​​300cm (if less than 300cm is calculated according to the actual area), it should be ensured that the number of contact points within each 25mm×25mm area meets the requirements of Table 1.
Guide rail width B
B≥100
Bearing diameter D
D≥100
1 The joint surface of the two mating parts is a set of guide rails of different widths, and the inspection is carried out according to the specified number of points of the wide guide rail. 2 The minimum number of points in the individual 25mmx25mm area shall not be less than half of the specified number of points. Contact points
3.3.2 If the two mating parts (such as sliding guide rails and sleeves) are processed by precision planing, grinding or other mechanical processing methods, they shall be inspected by coloring method, and the contact shall be uniform. The cumulative value of the contact area shall not be less than 70% in the axial direction of the sleeve and in the entire length of the guide rail, and not less than 50% in the width of the guide rail (only when the contact in the width reaches the specified length can it be used as the calculated value in length). 3.3.3 All parts on the spring coiling machine shall meet the quality requirements. It is not allowed to put in gaskets, sleeves, etc. that are not specified in the drawings. 3.3.4 Important fixed joint surfaces shall fit tightly. After tightening, check with a 0.05mm feeler gauge. The allowable insertion depth of the feeler gauge should not be greater than 1/4 of the contact surface width, and the cumulative length of the feeler gauge between the contact surfaces should not be greater than 1/10 of the circumference. 3.3.5 The dimensions, parameters and accuracy of the sprockets, gears and worm gear pairs assembled on the spring coiling machine shall comply with the current standards. The axial misalignment between the two meshing gears shall be as specified in Table 2. Table 2
Wider gear rim width B
B≤100
Center misalignment
≤5%B
3.3.6 The operation of the handle, handwheel or pedal device must be flexible and reliable. The required operating force for the handle, handwheel, etc. should not be greater than 50N; for the pedal device, it should not be greater than 80N (measured under no load). Note: The above provisions do not apply to the adjustment handle (or handwheel). 3.3.7 The outer surface of the spring coiling machine should not have protrusions, depressions, roughness and other damage not specified in the drawing. The edges of the joint surfaces of the parts should be neat and symmetrical, and there should be no obvious misalignment. The misalignment and unhook weighing should comply with the provisions of 3.9.4 of JB/T1829-1997. 2
3.3.8 The exposed welds should be trimmed straight and evenly hooked. JB/T3581-1999
3.3.9 The countersunk screws should not protrude from the surface of the hand parts, and there should be no obvious eccentricity between the head and the countersunk hole. The fixing pins should protrude slightly from the surface of the parts, and the tail end of the bolts should protrude from the nut, and the protruding part should be slightly larger than the chamfer value. The exposed shaft end should protrude from the end face of the containing part, and the protruding value is approximately the chamfer value. The wall thickness between the inner hole surface and the housing flange should be evenly hooked and symmetrical, and the difference in the flange wall thickness should not be greater than 25% of the actual maximum wall thickness. 3.4 The paint quality of the spring coiling machine should comply with the provisions of JB/T1829. 3.5 The quality of the electrical system of the spring coiling machine shall comply with the relevant provisions of GB/T5226.1. 4 Test methods and inspection rules
4.1 Each spring coiling machine shall be inspected and qualified by the inspection department of the manufacturer before it can leave the factory. A certificate of conformity shall be provided when leaving the factory. 4.2 The spring coiling machine shall be inspected and tested for the following items at the manufacturer: a) Inspection of type, basic parameters and dimensions: b) Idle operation test:
) Working test:
d) Accuracy inspection.
4.3 Inspection of type, basic parameters and dimensions The basic parameter inspection of the spring coiling machine shall be carried out under no-load conditions and shall comply with the provisions of the current standards. Random inspection is allowed for the finalized spring coiling machine, and the number of random inspections for each batch shall not be less than 10%, but not less than one. 4.4 Idle operation test
4.4.1 Provisions for idle operation time:
The continuous idle operation time that drives the working mechanism of the spring coiling machine to move shall generally be no less than 4h. The spring coiling machine should be tested in different stages. The medium speed operation time is 2.5 hours, and the maximum speed operation time is 0.5 hours (when using stepless speed change, it can be adjusted to any speed). 4.4.2 The temperature rise during the idling time shall be measured with a spot thermometer at the measurable part closest to the moving surface, and the temperature rise and maximum temperature shall comply with the following provisions:
a) The temperature rise of the slider bearing shall not be greater than 30°C, and the maximum temperature shall not be higher than 60°C; b) The temperature rise of the rolling bearing shall not be greater than 40°C, and the maximum temperature shall not be higher than 70°C. 4.4.3 The electromagnetic clutch, brake, and friction clutch shall move smoothly and in a coordinated manner during the single stroke operation test. During the test, the friction plate (block) must not be burned.
4.4.4 The working mechanism of the spring coiling machine should be coordinated with each other, and all working standard movements should be smooth and reliable. 4.4.5 The working conditions of the electrical, lubrication and cooling systems and their accessories should be normal and reliable. 4.4.6 There should be no leakage of oil and water in the lubrication and cooling systems. 4.4.7 The transmission mechanism, electrical devices, etc. of the spring coiling machine should have uniform acoustic response during operation, and there should be no irregular impact sounds and periodic screams. 4.4.8 The noise of the spring coiling machine should comply with the provisions of JB9972, and its measurement method should be carried out in accordance with relevant standards. 4.5 Working test
4.5.1 The spring coiling machine must be subjected to a working test before leaving the factory. The processing range, productivity and quality of the processed products should comply with the current standards or technical documents approved according to the prescribed procedures. 4.5.2 Spring coiling All mechanisms and working systems of the machine should act in a coordinated, stable and reliable manner during the working test, and the safety protection devices and insurance devices must be reliable.
4.6 Accuracy inspection
JB/3581-1999
4.6.1 The accuracy inspection of the spring coiling machine shall comply with the provisions of GB/T143312 After the spring coiling machine passes the working test, the detected geometric accuracy data shall be recorded in the factory certificate of conformity, 4.6.2
5 Marking, packaging and transportation
The packaging quality of the spring coiling machine shall comply with the provisions of JB/T8356.1. The storage and transportation indication symbols on the outer wall of the packaging box shall comply with the provisions of GB1915.2
Each spring coiling machine shall be accompanied by the following documents:
a) Certificate of conformity:
b) Instruction manual;
c) Packing list.
Mechanical Industry Standard
Technical Conditions for Automatic Spring Coiling Machine
JB/T3581-1999
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: Postal Code 100044)*
Format 880×1230
Sheet 1/2
Word Count 10000
First Edition in September 1999
First Printing in September 1999
Print Quantity 1-500
Price 500 Yuan
99-528
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