This standard specifies the test methods for JLY series cage stranding equipment. This standard is applicable to JLY series cage stranding equipment. This standard is used together with JB/T 6756.1. JB/T 6756.7-1993 Test methods for special equipment for wires and cables Part 7: JLY type cage stranding equipment JB/T6756.7-1993 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 7 JLY type cage stranding equipment
1 Main contents and scope of application
This standard specifies the testing methods for JLY type cage stranding equipment. This standard is applicable to JLY type cage stranding machines. JB/T6756.7-93
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
JB/T5818.4
Precision of involute cylindrical gears
Technical requirements for wire and cable stranding equipment Part 4 Cage stranding equipment JB/DQ8657.5 Product quality classification of wire and cable special equipment Part 5 JL series stranding equipment
JB/DQ8124
3 Idle running performance test
Basic technical requirements for cable equipment
3.1 Preparation before testing
Before testing, the equipment should be tested in accordance with the 3 provisions of JB/T6756.1. 3.2 Rotation steps and time of the operating mechanism
Each operating mechanism of the equipment should start from the lowest speed and increase step by step. Generally, it should operate at three speeds: low, medium and high. The operating time of each speed should not be less than 30 minutes, and the continuous idle running time at the highest speed should not be less than 4 hours. 3.3 Speed ​​detection
Use a tachometer to measure the rated speed of each output shaft, and its speed should meet the design requirements. 3.4 Temperature rise detection
Use a point thermometer to measure the temperature of each transmission gearbox bearing cover and suspicious points at the rated speed and calculate the temperature rise. 3.5 Noise detection
According to 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 cage, press the stopwatch and stop button at the same time. When the rotating main shaft stops rotating, press the stopwatch immediately. The reading is the braking time.
3.7 Electromechanical safety protection device detection
The 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, the load operation performance test is carried out under normal process conditions after adjustment. 4.1 Product specification test
From the production range specified by the equipment, select large, medium and small specifications as the processing objects and run them at the highest speed allowed, with each specification not less than 1 full plate. Use conventional measuring tools to measure the pitch and twist outer diameter. Approved by the Ministry of Machinery Industry on August 21, 1993
Implemented on October 1, 1993
4.2 Reliability test
JB/T6756.7-93
Within the specified speed range of the equipment and under normal production conditions, it can run continuously for 24 hours without failure. 5 Precision inspection of main parts
5.1 Capstan
The radial circular runout inspection of the outer circle of the capstan to the central axis of the capstan shall comply with the provisions of Figure 1 and Table 1. The end face circular runout inspection of the end face of the capstan to the central axis of the capstan shall comply with the provisions of Figure 1 and Table 1; the coaxiality inspection of any reel frame support axis hole on two adjacent capstans shall comply with the provisions of Figure 2 and Table 2: The parallelism inspection of the reel frame support axis to the main shaft axis shall comply with the provisions of Figure 2 and Table 2: 5.2 Reel frame
The coaxiality inspection of the reel frame support hole shall comply with the provisions of Figure 3 and Table 3; the coaxiality inspection of the reel support hole shall comply with the provisions of Figure 3 and Table 3; the static balance inspection of the reel frame components shall comply with the provisions of Figure 4 and Table 4. 5.3 Twist-back ring
The inspection of the position of each equally divided hole of the twist-back ring (the angle error of each equally divided hole and the coaxiality of the surrounding with the reference inner hole or outer circle) is to be determined. 5.4 Gearbox
The detection of the axis parallelism of each bearing hole of the gearbox shall comply with the provisions of Figure 5 and Table 5; the gear accuracy detection shall comply with the relevant provisions of GB10095. Machine accuracy detection
The radial circular runout detection of the outer circle of the capstan to the center line of the rotating shaft of the cage shall comply with the provisions of Table 6, a.
b. The end face circular runout detection of the end face of the capstan to the center line of the rotating shaft of the cage shall comply with the provisions of Figure 6 and Table 6. 6.2 The inclination of the wire drum rack shall be visually inspected after the wire drum rack is installed in the cage and the assembly of various torsion mechanisms is completed. 6.3 Supporting wheel
The radial circular runout detection of the outer circle of the supporting wheel to the rotating center line shall comply with the provisions of Figure 7 and Table 7. 8.
b. The contact area detection method between the capstan and the supporting wheel shall comply with the provisions of Figure 7 and Table 7. 7 Appearance quality inspection
The appearance quality inspection shall comply with the provisions of Article 5.2 of JB/T6756.1. 1
Rotary worktable
Test items
1. Radial direction of outer circle of capstan
to capstan center
axis
2. End face of capstan
to capstan center
axis
Circular runout
Test items
1. Any line on two adjacent capstans
the support shaft of the pan frame
hole 2. Parallelism of the bearing axis to the cage main axis JB/T5818.4 JB/T5818.4 Detection tool JB/T6756.7-93 Detection method 1. Equal height support 1. Place the capstan on the rotating table Only three equal-height supports are placed
2. Measuring stand with indicator
Testing tools
1. Inspection spindle
2. Homemade measurement
3. Indicator
2. According to ① in Figure 1, fix the measuring stand to calibrate the center of the pattern plate hole to coincide with the center of the workbench. 3. According to ② in Figure 1, make the indicator contact touch the outer circle of the pattern plate and rotate the workbench. The difference between the maximum and minimum values ​​of the indicator is the capstan. The radial runout of the outer circle to the center axis is as shown in Figure 1. Make the indicator contact touch the two end faces of the capstan. The difference between the maximum and minimum values ​​of the indicator is the end face runout of the capstan end face to the center axis. B
Testing method
1. Make the test mandrel with the effective size of the support shaft hole of the wire drum rack, and the length should be greater than the distance between the capstans. 2. According to ① in Figure 2, use the test mandrel plug to measure the support shaft holes of the wire drum rack on the two adjacent capstans. The mandrel should be able to pass smoothly. , and can rotate
3. Install the indicator on the self-made measuring frame, the measuring frame is placed on the main shaft of the cage, the indicator probe touches the inspection spindle a, b, and records the indicator reading difference fy4. Place the self-made measuring frame at position B in Figure 2, and measure the indicator reading difference f at a and b. 5. The parallelism of the support axis of the bobbin rack to the main shaft axis of the cage is, /(fx)\+(fy)
Reference spindle I
Test items|| tt||Wire drum support
Hole coaxiality
Wire drum support hole
Coaxiality
JB/T5818.4
JB/T5818.4
JB/T6756.-7-93
Spindle 1
Detection tool
1.Spindle 1, 1
2.Fixed and
Adjustable supports 3 pcs||tt ||3. Measuring stand with indicator
||Testing mandrel
Testing method
1. Make mandrel 1, whose length is greater than 2 times of hole length. 2. According to Fig. 3A, insert mandrel 1 and 2 seamlessly into the supporting hole of the wire drum rack, 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 I to be parallel to the flat plate: then use the indicator to measure at points & and b near the end face of the hole to be measured, and calculate the value of the mandrel. The difference between the two points and the height (L+sign) is t, and fn
3. Rotate the wire drum rack 90°, and measure f. and fb in the same way as shown in Figure 3B4. Calculate the coaxiality error of points a and b according to f.=2Vf)\+(f）
f=2Vf)*+(f)
, and take the larger value as the coaxiality error of the wire drum rack support hole,
1. Make the inspection mandrel according to the effective size of the wire drum support hole. Length is greater than the width of the reel rack 2. The inspection mandrel should be able to pass through the two bearing holes of the reel smoothly and can rotate 35
Testing items
Components of the reel rack
Static balancewwW.bzxz.Net
JB/+5818.4
Testing tools
1. Two equal-height blades
2. Rubber mix
3. Measuring plate
Testing items
Axis of the bearing holes of each axis of the gear box
Parallelism
JB/DQ8657
Testing tools
1. Measuring stand with indicator
2. Three fixed and adjustable
JB/T6756.7-93
Blade support
Testing method
Put the two ends of the wire drum frame on the blade support, swing the wire drum frame to make it stop naturally. If the wire drum frame is not in a horizontal position, use the weighting method to stick the plasticine to the lighter side until it can automatically stop in a horizontal position after swinging. The product of the mass of the plasticine and the distance from the plasticine to the axis of the support shaft is the static unbalance moment of the wire drum frame.
Testing method
1. Place the gearbox on three equal-height supports on the boring machine workbench. 2. Fix the measuring frame on the boring machine spindle, rotate the spindle, calibrate any bearing hole on the gearbox, and make the center of the front and rear holes coincide with the center of the boring machine spindle. 3. Move the workbench to align the second bearing hole with the boring machine spindle, and measure in three axial sections that are 120° apart. The maximum value of half the difference in the indicator reading is taken as the parallelism error of the bearing hole, that is,
(M,M,)max
4. Check the parallelism errors of the remaining bearing holes in turn. 5. Random testing is also possible.
Testing items Purpose
1. Radial runout of the outer circle of the groove disc
on the center line of the cage rotation
2. End face of the capstan
End face runout of the center line of the cage rotation
JB/T5818.4
Detection tool
Measuring stand with indicator
JB/T6756.793
Detection method
1. After assembly and adjustment according to the schematic diagram, release the support wheel at the groove disc to be measured, rotate the cage, and use the indicator to measure the outer diameter of the capstan 2. Rotate the cage as mentioned above and use the indicator to measure the circular runout of the end face of the capstan, as shown in ② in Figure 6. The maximum reading difference of the indicator is the radial circular runout of the end face of the capstan. 37
Test items
1. The radial circular runout of the outer circle of the supporting wheel
to the rotation center
line
2. The contact surface between the supporting wheel and the supporting wheel
JB/T5818.4
JB/T5818.4
Additional instructions:
Test Tools
With indicator
Measuring stand
Red lead coating
JB/T6756.7-93
Testing method
1. After the whole machine is idle and adjusted, when the cage is stationary, turn the capstan indirectly and use the indicator to measure the radial runout of the outer circle of the support wheel, see Figure 7. The maximum reading difference of the indicator is the radial runout of the outer circle of the support wheel
2. Apply the red lead coating evenly on the outer circle surface of the support wheel, turn the capstan, and calculate the contact area based on the traces left when the capstan and the support wheel contact. This standard was proposed and managed by the Shanghai Cable Research Institute of the Ministry of Machinery Industry. This standard was drafted by Shanghai Electric Machinery Factory. The main drafters of this standard are Qin Zhendi and Zhang Yusheng. 38
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