This standard specifies the test methods for JG series and stranding equipment. JB/T 6756.4-1993 Test methods for special equipment for wires and cables Part 4: JG series tube stranding equipment JB/T6756.4-1993 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
Testing methods for special equipment for wires and cables
Part 4: JG series tubular stranding equipment
1 Subject content and scope of application
This standard specifies the testing methods for JG series tubular stranding equipment. This standard is applicable to JG series tubular stranding equipment. JB/T6756.4—93
This standard is used together with JB/T6756.1 & Testing methods for special equipment for wires and cables Part 1: General Principles. 2 Reference standards
GB10095 Accuracy of involute cylindrical gears
JB/T5818.3 Technical requirements for wire and cable twisting equipment Tube twisting equipment JB/DQ8124.1 Basic technical requirements for cable equipment JB/DQ8675 Product quality classification of wire and cable special equipment 3 Idle running performance test
3.1 Preparation before test
Before the test, it should be carried out according to the provisions of Chapter 3 of JB/T6756.1. 3.2 Rotation steps and time of the operating mechanism
The operating mechanism of the main machine should start from the lowest speed and increase step by step. Generally, it should be operated at three speeds of low, medium and high. The operation time of each speed is not less than 30 minutes, and the continuous idle running time at the highest speed is not less than 4 hours. 3.3 Speed ​​detection
When the equipment is started to the rated speed state, the speed of the simplified body is measured with a tachometer. When the tachometer indicates a stable state, its reading is the speed of the equipment. 3.4 Temperature rise detection
At rated speed, use a point thermometer to measure the temperature of the main engine transmission gearbox and the supporting wheel bearing cover and the suspicious points and calculate the temperature rise. The temperature rise should comply with the provisions of JB/DQ8124.
3.5 Noise detection
Noise detection should comply with the provisions of Article 5.1 of JB/T6756.1. It should be carried out at the highest speed. 3.6 Braking time detection
At the highest speed of the equipment, press the stopwatch and stop button at the same time. When the machine stops rotating, press the stopwatch immediately. The stopwatch reading is the braking time.
3.7 Electromechanical safety protection device detection
Electromechanical safety protection device detection should comply with the provisions of Article 5.3 of JB/T6756.1. 4 Load operation performance detection
After the equipment passes the idling test, it is adjusted and the load operation performance test is carried out under the positive belt process conditions. Approved by the Ministry of Machinery Industry on August 21, 1993
Implemented on October 1, 1993
4.1 Product specification testing
JB/T6756.4-93
From the production specifications specified by the equipment, select large, medium and small specifications as the processing objects, respectively operate at the maximum speed allowed by the processing object, and each specification shall not be less than 1 full reel, and use conventional measuring tools to measure the pitch and twist outer diameter. 4.2 Reliability testing
Within the operating speed range specified by the equipment, under normal production conditions, it can run continuously for 24 hours without failure. 5 Precision testing of major components
5.1 Cylinder
The precision of the simplified body is randomly tested on the processing lathe (in accordance with the machine tool precision regulations). 5.2 Reel rack
The coaxiality of the reel support hole and the coaxiality of the reel rack support hole shall comply with the provisions of Figure 1 and Table 1. 5.3 Gear
Gear accuracy detection shall comply with the relevant provisions of GB10095 and GB11365. 6 Whole machine accuracy detection
6.1 Cylinder assembly accuracy
The detection of the radial round runout accuracy of the working surface of the supporting wheel ring after the simplified installation shall comply with the provisions of Figure 2 and Table 2. 6.2 Supporting wheel assembly accuracy
The detection of the radial round runout accuracy of the working surface of the supporting wheel after the supporting wheel is assembled shall comply with the provisions of Figure 3 and Table 3. 6.3 Wire drum rack assembly accuracy
The inclination (static) detection after the wire drum is assembled shall comply with the provisions of Figure 4 and Table 4. 6.4 The contact accuracy between the supporting wheel ring and the supporting wheel of the cylinder simplified body The contact accuracy detection between the supporting wheel ring and the supporting wheel of the cylinder simplified body shall comply with the provisions of Figure 5 and Table 5. 6.5 Slider dynamic balancing accuracy
After the simplified body is assembled, the overall dynamic balancing accuracy detection shall comply with the provisions of Figure 6 and Table 6. 7 Appearance quality inspection
The appearance quality inspection of equipment shall comply with the provisions of Article 5.2 of JB/T6756.1. Reference spindle
Testing items
Drum support
Hole coaxiality
Drum rack support
Bearing hole coaxiality
Testing items
Simplified support wheel
Figure Radial circle
JB/T5818.3
JB/T5818.3
JB/T5818.3
Testing tools
Spindle 1
JB/T6756.4-93
Testing methodsbzxz.net
1. The outer diameter of the spindle is made according to the effective size of the drum support hole, and the length is greater than the width of the drum rack;
2. According to Figure 1A, use spindle 1 to pass through the two drum support holes. The spindle "should be able to pass smoothly and rotate.
1. With indicator
measuring frame of the instrument
3. Mandrel 1,
4. Fixed and adjustable
supports 3
detection tools
measurement with indicator
1. Make mandrel 1,【, the length is greater than 2 times the length of the hole; 2. According to Figure 1A, insert mandrel 1,【 into the support hole of the wire drum rack without any gap, place the side of the wire drum rack on the three supports of the flat plate, and use the indicator to calibrate the reference mandrel 1 to be parallel to the flat plate. Then use the indicator to measure at points a and b on the mandrel ■ close to the end face of the hole to be measured, and calculate the difference between the two points and the height (L+
》, and f.
3. Rotate the wire drum rack 90°, according to Figure 1B. Use the same method to measure f and, and calculate a according to.=2V(f.)+(f) and f=2）+（） b. The coaxiality error of the two points, the larger value is taken as the coaxiality error of the reel rack support hole. Figure 2
Detection method
1. After the idling is completed, it is allowed to adjust the support wheel in a static state. Fix the indicator on the machine base so that the indicator probe touches the surface of the cylinder support wheel ring. Adjust the support wheel so that it gently supports the tested support wheel diagram, rotate the cylinder, and the difference between the maximum and minimum values ​​indicated by the indicator is the radial circular runout of the support wheel ring.
2. The working surface of each gear support wheel ring is tested. 177
Testing items
Outer limit of support wheel
Radial circular runout
Testing items
Reel rack inclination
JB/T5818.3
JB/T5818.3
Detection tools||tt ||JB/T6756.4—93
Measurement with indicator
Testing tools
Steel ruler
Testing method
1.After the idling is finished, adjust the support wheel to gently support the cylinder in a static state, fix the measuring frame on the machine base, make the indicator probe touch the outer ring surface of the support wheel, rotate the cylinder, and the difference between the maximum and minimum values ​​indicated by the indicator is the radial circular motion error of the outer circle of the support wheel. 2. Each support wheel needs to be tested.
Testing method
1.When the cylinder is in a static state, move the wire drum rack installed in the cylinder by hand. When the wire drum rack stops swinging naturally, measure the center height of the wire drum support holes (axles) on both sides of the wire drum rack with the installation base as the reference, and convert the difference between the center heights of the two holes into the inclination of the wire drum rack.
2. The inclination can also be visually inspected.
Test items
Contact area ratio between the supporting wheel rim and the supporting wheel
Test items
Simplified dynamic balance
Balance accuracy
JB/T5818.3
Section 5.1.3.C
Comply with,
JB/T5818.3
Appendix Add explanation:
JB/T6756.4-93
Testing tools
Red lead coating
Testing tools
Mobile dynamic balancing tester
Testing method
Evenly apply red lead coating on the outer surface of the supporting wheel, and make the supporting wheel ring of the cylinder contact with the supporting wheel, rotate the cylinder, and calculate the contact area ratio according to the color receiving area of ​​the contact surface of the supporting wheel ring of the cylinder.
Start the main engine, adjust the supporting wheels of each gear to the best working state, and test the dynamic balancing accuracy of the cylinder according to the operating regulations of the dynamic balancing tester. This standard was proposed and managed by the Shanghai Cable Research Institute of the Ministry of Machinery Industry. This standard was drafted by the Dongfang Electric Machinery Factory. The main drafters of this standard are Yang Zhenguo and Yang Binhua. 179
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