This standard specifies the test method for JLK series frame-stranding equipment. This standard is applicable to JLK series frame-stranding equipment. This standard is used together with JB/T 6756.1. JB/T 6756.6-1993 Test method for special equipment for wires and cables Part 6: JLK frame-stranding equipment JB/T6756.6-1993 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
Special Equipment for Wires and Cables
Test Methods
Part 6: JLK Type Frame Stranding Equipment
1 Subject Content and Scope of Application
This standard specifies the test methods for JLK type frame stranding equipment. This standard is applicable to JLK type frame stranding equipment.
JB/T6756.6-93
This standard is used together with JB/T6756.1 & Test Methods for Special Equipment for Wires and Cables Part 1: General Principles. 2 Reference standards
GB10095 Accuracy of involute cylindrical gears
JB/T5818 Technical requirements for wire and cable stranding equipment Frame stranding equipment JB/DQ8124 Basic technical requirements for cable equipment JB/DQ8657
Product quality classification of wire and cable special equipment 3 Idle running performance test
3.1 Preparation before test
The preparation before test shall comply with the provisions of Chapter 3 of JB/T6756.1. 3.2 Rotation steps and time of rotating mechanism
The rotating mechanism of the equipment shall start from the lowest speed and increase step by step. Generally, it shall operate at three speeds: low, medium and high. The operation time of each speed shall not be less than 30 minutes, and the continuous idle running time at the highest speed shall not be less than 4 hours. 3.3 Speed ​​detection
Use a tachometer to measure the speed of each output shaft, and its speed shall meet the design requirements. 3.4 Temperature rise detection
Use a point thermometer to measure the bearing cover and suspicious point temperature of the box at rated speed and calculate the temperature rise. The temperature rise should comply with the provisions of JB/DQ8124.
3.5 Noise detection
Perform at the highest speed in accordance with Article 5.1 of JB/T6756.1. 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, immediately press the stopwatch. The reading is its 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 tested under normal process conditions. Approved by the Ministry of Machinery Industry on August 21, 1993
Implemented on October 1, 1993
4.1 Product Specification Testing
JB/T6756.6-93
From the production range specified by the equipment, select large, medium and small specifications as the processing objects, and run them at the maximum speed allowed by the processing objects. Each specification shall not be less than 1 full disk. Use conventional measuring tools to measure the pitch and twist outer diameter. 4.2 Reliability Testing
Within the speed range specified by the equipment, under normal production conditions, it can run continuously for 24 hours without failure. 5 Precision Testing of Main Components
5.1 Frame Disc
The radial circular runout test of the outer circle of the frame disc to the axis of the disc center hole shall comply with the provisions of Figure 1 and Table 1. The end face circular runout test of the end face of the frame disc to the axis of the disc center hole shall comply with the provisions of Figure 1 and Table 1. O
Figure 1 Vertical lathe rotary workbench
Test items
1. Radial circle of the outer circle of the frame disc to the axis of the center hole
2. The two end faces of the cabinet disc to the axis of the center hole
Circular tracking
5.2 Cross support
JB/T5818
Shuttle measuring tool
1. Vertical lathe workbench
2. Measurement with indicator Frame
3. Fixed and adjustablebzxZ.net
Three supports
Testing method
1. Place the frame disc on three equal-height supports on the vertical lathe workbench. 2. Suction the measuring frame on the vertical lathe tool rest. Correct the inner hole center to coincide with the workbench center, as shown in Figure 1 at ①.
3. Move the measuring frame to the outer circle of the frame disc. The difference between the maximum and minimum readings of the indicator on the rotating workbench is the radial circular runout of the outer circle of the frame disc to the axis of the center hole. As shown in Figure 1 at ②.
4. Move the table frame to the two end faces of the disc, rotate the workbench, and the difference between the maximum and minimum readings of the indicator is the end face circular runout of the end face of the frame disc to the axis of the center hole, as shown in Figure 1 at ③.
The deviation of the L dimension shall comply with the provisions of Table 2. The parallelism test of the A surface and the B surface to the axis of the cross support hole shall comply with the provisions of Figure 2 and Table 2. The verticality test of surface A to surface B shall comply with the provisions of Figure 2 and Table 2. The symmetry test of surface A and surface B to the axis of the cross bearing hole shall comply with the provisions of Figure 2 and Table 2. The static balance accuracy test of the cross bearing shall comply with the provisions of Figure 3 and Table 3. 185
Test items
1. Dimensions 1. Deviation
2. Parallelism of surface A and surface B to the axis of the bearing hole
3. Verticality of surface A to surface B
4 Symmetry of surface A and surface B to the axis of the cross bearing hole
JB/DQ8657
According to factory design technology
According to factory design technology
JB/T6756.6 -93
Testing tools
Vernier caliper
1. With indicator
3. Two V-blocks
5. 90° angle ruler
90° right angle ruler
Height vernier caliper
Testing method
Use vernier caliper to measure the dimensions 1. Sequentially
1. Insert the mandrel into the cross support hole without gap, and place the mandrel on the V-block; use the indicator to correct the mandrel so that the two ends of the mandrel are at the same height as the plate. 2. Adjust the cross support so that plane A is at the same height as the plate, touch the indicator contact of the measuring frame to the A surface, move the measuring frame, and use the maximum reading difference of the indicator as the parallelism error of the surface.
3. Rotate the cross support 90° and measure the parallelism error of surface B in the same way.
Use a square to check the verticality of the A and B surfaces. 1. Correct the mandrel so that both ends of the mandrel are at the same height as the plate. 2. Use a height vernier caliper to measure the distance H from the mandrel to the plate. Then the height of the axis relative to the plate is h; = H-
3. Adjust the cross support so that the plane A is at the same height as the plate, and measure the distances Li and Ls from the upper and lower A surfaces to the plate respectively. Then the height of the symmetric center planes of the two A surfaces relative to the plate is h2
4. Measure on both sides of the cross support and take the calculated result = 21h; the larger h value is the symmetry error of the A surface to the axis of the cross support hole. 5. Rotate the cross support 90* and use the same method to measure the symmetry of the B surface. Inspection items
Cross support static Balance
JB/DQ8657.5
JB/T6756.693
Testing tools
Equal height V-shaped support
2. Hollow balancing center
3. Horizontal steel shaft
4. Plasticine
Testing method
Put the cross support in the middle of the hollow balancing mandrel, and place the balancing mandrel on the horizontal steel shaft. Place the cross support symmetrically in the middle of the horizontal steel shaft, rotate the cross support, and when it stops automatically, use plasticine to counterweight its top, and test it several times to make the cross support stop at any position. The product of the mass of the plasticine and the distance from the plasticine to the center of the balancing mandrel is the cross support. Static unbalance moment.
5.3 The coaxiality test of the axis of the cable drum support shaft hole during the frame assembly process shall comply with the provisions of Figure 4 and Table 4. 222
Test items
Cable drum support shaft hole axis
Line coaxiality
5.4 Gear box
JB/DQ8657.5
Testing tools
1. Equal height V-shaped support
2. Hollow balance center
3. Hollow mandrel
Testing method
1. The diameter of the hollow mandrel is the effective size of the hole. 2. The hollow mandrel should be able to pass through the two measured holes smoothly and be able to rotate. The detection of the parallelism of the axes of each bearing hole of the box body shall comply with the provisions of Figure 5 and Table 5. 187
JB/T6756.6-93
Gear accuracy detection shall comply with the relevant provisions of GB10095. Figure 5
Testing items
Parallelism of the axes of the bearing holes of the gear box
JB/DQ8657
Assembly accuracy detection of the whole machine
Frame
Testing tools
1.
Measuring frame with indicator
2. Three fixed and adjustable
supports
Testing methods
1.Place the gear box on the three isotropic supports on the working table of the boring machine. 2.Fix the measuring frame on the main shaft of the boring machine.Turn the main shaft, calibrate any bearing hole on the gearbox and make the front and rear holes coincide.
3. Move the workbench to align the second bearing hole with the boring machine spindle, and measure in three axial sections that are 120* to each other. 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)ma.
4. Check the parallelism error of the remaining bearing holes in turn. 5. Random inspection is also possible.
After the frame body is assembled, the radial circular runout of the outer circle of the frame disc to the center line of the frame shaft shall comply with the provisions of Figure 6 Table 6. After the frame body is assembled, the end face circular runout of the end face of the frame disc to the center line of the frame shaft shall comply with the provisions of Figure 6 Table 6. ④
Testing items
Radial runout of the outer circle of the disk to the
center line of the frame axis
The end runout of the disk face to the
center line of the frame axis
JB/DQ8657
Testing tools
1. Level
Testing methods
1. After the frame body is assembled, use a level to calibrate the frame axis and make it horizontal. 2.
Measuring stand with indicator
2. Rotate the frame body and use the indicator to measure the radial runout of the outer circle of the disk. The maximum reading difference of the indicator is the radial runout of the disk, see Figure 6.
3. Rotate the frame body and use the indicator to measure the end face runout of the disk. The maximum reading difference of the indicator is the end face runout of the end face, see Figure 6. Appearance quality inspection
JB/T6756.6--93
Appearance quality inspection shall comply with the provisions of Article 5.2 of JB/T6756.1. Additional remarks:
This standard is proposed and managed by Shanghai Cable Research Institute of the Ministry of Machinery Industry. This standard is drafted by Shanghai Cable Research Institute of the Ministry of Machinery Industry. The main drafters of this standard are Ren Zhihui and Zhang Haihong189
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