This standard specifies the test methods for CLY type cabling equipment. JB/T 6756.8-1993 Test methods for special equipment for wires and cables Part 8: CLY type cabling equipment JB/T6756.8-1993 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 8
: CLY type cabling equipment
1 Subject content and scope of application
This standard specifies the testing methods for CLY type cabling equipment. This standard is applicable to CLY type cage cabling machines. JB/T6756.893
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/DQ8657.6 Product quality classification of wire and cable special equipment Part 6 Cabling equipment CL series JB/DQ8124
No-load 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
The operating mechanism of the equipment should start from the lowest speed and then increase step by step. Generally, it should operate at low, medium and high speeds. The operating time of each speed should not be less than 30 minutes, and the continuous no-load 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 the 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 operation, it is adjusted and the load operation performance is tested under normal process conditions. 4.1 Product specification test
From the production range specified by the equipment, select large, medium and small specifications as the processing objects, run at the highest speed allowed, and each specification is not less than 1 full coil. Use conventional measuring tools to measure the pitch and twist outer diameter. 4.2 Reliability test
Approved by the Ministry of Machinery Industry on August 21, 1993
Implementation on October 1, 1993
JB/T 6756.8~93
Within the specified speed range of the equipment, under normal production conditions, run continuously for 24 hours without failure. 5 Precision test of main parts
5.1 Capstan
The test of the radial circular runout of the outer circle of the capstan to the center axis of the capstan shall comply with the provisions of Figure 1 and Table 1. The test of the end face circular runout of the capstan end face to the center axis of the capstan shall comply with the provisions of Figure 1 and Table 1. The detection of the coaxiality of any reel rack support shaft hole on two adjacent capstans shall comply with the provisions of Figure 2 and Table 2. The detection of the parallelism of the reel rack support axis to the main shaft axis shall comply with the provisions of Figure 2 and Table 2. 5.2 The detection of the coaxiality of the reel rack support hole shall comply with the provisions of Figure 3 and Table 3. The detection of the coaxiality of the reel support hole shall comply with the provisions of Figure 3 and Table 3. The detection of the static balance of the reel rack components shall comply with the provisions of Figure 4 and Table 4. 5.3 The detection method of the position of each equally divided hole of the torsion ring (the angle error of each equally divided hole and the coaxiality of the circumference with the reference inner hole or outer circle) of the torsion ring is to be determined. 5.4 The detection of the axis parallelism of each bearing hole of the gear box body shall comply with the provisions of Figure 5 and Table 5. The gear accuracy detection shall comply with the relevant provisions of GB10095. Machine precision inspection
6.1 Cage
The radial runout of the outer circle of the capstan to the center line of the capstan rotating shaft shall comply with the provisions of Figure 6 and Table 6. a.
The end face runout of the capstan to the center line of the capstan rotating shaft shall comply with the provisions of Figure 6 and Table 6. b.
6.2 The method for testing the inclination of the wire drum rack shall be to visually inspect the inclination according to the requirements of Figure 2 of JB/T5818.4 after the wire drum rack is installed into the cage and the assembly of various torsion mechanisms is completed.
6.3 Supporting wheel
a. The radial runout of the outer circle of the supporting wheel to the rotation center line shall comply with the provisions of Figure 7 and Table 7. b. The contact area 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 of the equipment shall comply with the provisions of Article 5.2 of JB/T6756.1. Yi?
Rotary worktable
Test itemsWww.bzxZ.net
1. Outer circle of the pattern pad
Compared to the center of the disk
Radial direction of the axis
Both sides
2. The tower surface of the pattern disk
Compared to the center of the disk
End surface of the axis
Have moved
Test items
JB/T 5818.4
1. Coaxiality of holes on any line of the reel between two adjacent lines
1JB/T5818.4
2. Parallelism of the axis of the reel support axis
Testing tools
1. Equal height support
2. Measuring stand with indicator
Testing tools
JB/T675 6.8-93
Testing method
1. Place the capstan on three equal-height supports of the rotating table. 2. According to ① in Figure 1, adjust the measuring frame to make the inner hole center of the capstan coincide with the center of the table. 3. According to ② in Figure 1, make the indicator contact touch the outside of the capstan and rotate the table. The difference between the maximum and minimum values ​​of the indicator is the lateral runout of the four pairs of center axes outside the capstan. 4. According to ③ in Figure 1, make the indicator candlestick touch the two end faces of the capstan and rotate the table. The difference between the maximum and minimum values ​​of the indicator is the lateral runout of the capstan end faces relative to the center axis. B
Stabilization method
2. Homemade measurement
1. Make the inspection mandrel with the effective size of the support shaft hole of the wire drum rack, and the length is greater than the distance between the capstans. 2. According to ① in Figure 2, use the inspection mandrel plug to measure the support shaft holes of the wire drum rack on the two adjacent capstans. The mandrel rack
3. The indicator
should be able to pass smoothly and rotate
3. Install the indicator on the homemade measuring frame, and the measuring frame is placed on the main shaft of the capstan cage. The indicator probe is located at the inspection mandrel = and b, and the indicator reading difference fy is recorded. 4. Place the homemade measuring frame at position B in Figure 2, and measure the indicator reading difference fx at a and b. fy)
5. The parallelism of the axis of the wire drum support to the axis of the main axis of the cage is f=L
Reference spindle 1
Test items
Wire drum support
Aperture axiality
Wire drum support hole
Coaxiality
JB/T5818.4
JB/T5818.4
Testing tools
1. Spindle 1,
2. Three fixed and
adjustable supports
3. Measuring frame with indicator
Inspection spindle
JB/T 6756.893
Detection method
1. Make mandrel 1, 2, with a length greater than the hole length. 2. According to Figure 3A, insert mandrel 1, 1 into the support hole of the wire drum rack without 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 close to the end face of the hole to be measured, and calculate the differences f and f between the two points and the height (L-
).
3. Rotate the wire drum rack 90°, and measure f, and fs in the same way as shown in Figure 3B. 4. Calculate the coaxiality error of points a and b according to =2f)+(f,)
f=2f)t+(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 be able to rotate. Inspection items
Reel rack parts
Static balance
JB/T5818.4
Inspection tools
1. Equal-height blades
Two bearings
2. Plasticine
3. Measuring plate
Inspection items
Axis of each gearbox
Axis of the bearing hole
Parallelism
JB/DQ8657
Inspection tools
1. Measuring stand with indicator
2.Three fixed and adjustable supports
JB/T6756.8-93
Blade support
Testing method
Place the second bundle of the wire drum rack on the blade support, swing the wire drum rack to make it stop naturally. If the wire drum rack is not in the horizontal position, use the weighting method to stick the plasticine to the lighter side until it can automatically stop in the 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 rack.
Testing method
1. 1. Place the gearbox on three equal-height supports on the boring machine table. 2. Fix the measuring frame on the boring machine spindle, rotate the spindle to calibrate any bearing hole on the gearbox and make the centers of the front and rear holes coincide. 3. Move the table to align the second bearing hole with the 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, i.e., f at
(M,-M,)max
4. Check the parallelism error of the remaining bearing holes in turn. 5. Random inspection is also possible. t||Testing items
1. Radial runout of the outer circle of the disc to the center line of the capstan rotation
shaft||2. End face of the capstan
End face runout to the center line of the capstan rotation
shaft||Testing items
1. Radial runout of the outer circle of the supporting wheel to the center line of the capstan
2. Contact surface between the disc and the supporting wheel
JB/T5818.4|| tt||JB/T5818.4
JB/T5818.4
Testing tools
|
Measuring stand with indicator
Testing tools
||
Measuring stand with indicator
Red lead coating
JB/T6756.893
Testing method
1.After assembly and adjustment according to the schematic diagram, release the supporting wheel at the capstan to be tested, rotate the capstan cage, and use the indicator to measure the radial circular runout of the outer casing of the pattern plate, see ① in Figure 6. The maximum reading difference of the indicator is the radial runout of the outer circle of the capstan
2. Continue with the above method
Rotate the capstan and use the indicator to measure the end face runout of the disc, as shown in Figure 6②. The maximum reading difference of the indicator is the end face runout of the disc Figure 7
Detection method
1. After the whole machine is idle and adjusted, when the capstan is stationary, indirectly rotate the capstan and use the indicator to measure the radial runout of the outer circle of the supporting wheel, as shown in Figure? , The maximum reading difference of the indicator is the radial runout of the outer circle of the supporting wheel
2. Apply red lead paint evenly on the outer ring surface of the supporting wheel, rotate the capstan, and calculate the contact area based on the traces left when the capstan and the supporting wheel are in contactJB/T6756.8-93
Additional instructions:
This standard is proposed and managed by the Shanghai Electric Rope Research Institute of the Ministry of Machinery Industry. This standard is drafted by Shanghai Electric Machinery Factory. The main drafters of this standard are Qin Zhendi and Zhang Yusheng.
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