A simulation elevation measurement method for reducing the diameter of the roller box roller shaft

Abstract

The application discloses a kind of simulation elevation measurement methods of reducing sizing roll box roller shaft, 1) positive and negative tooth screw rod one, positive and negative tooth screw rod two and inner tooth hexagonal sleeve rod are connected to form rotating support frame, and the size of moment at different positions is measured using torque wrench and well recorded on rotating support frame;2) the threaded head of two fixed connecting rods is respectively inserted into the center hole of two reducing sizing roll box roller shafts and tightened;3) the round hole of the two ends of rotating support frame is respectively placed into the smooth head of fixed connecting rod and adjusted to horizontal;4) compare the rolling force table and rotate the inner tooth hexagonal sleeve rod until the two fixed connecting rods are opened to the appropriate moment, so as to simulate the situation that the roller shaft is opened by steel during real rolling, and elevation measurement is carried out.The application simulates the actual elevation of roll box roller shaft during real rolling, improves the accuracy of rolling line elevation measurement, effectively reduces the frequency of accident occurrence and the number of roll box replacement, and realizes cost reduction and efficiency increase.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of measurement, in particular to a simulation height measurement method of a reducing sizing mill roll box roll shaft. BACKGROUND

[0002] As the last rolling mill unit of high-speed wire rod mill, the biggest feature of reducing sizing mill unit is high precision and high speed. Because of the particularity of reducing sizing mill unit, the installation requirements of reducing sizing mill roll box are more stringent. The most important parameter of reducing sizing mill roll box is the rolling line height of roll shaft. When rolling small size wire rod, the height error of more than 0.02mm will not only greatly affect the size of the rolled wire rod, but also cause the occurrence of steel pile accident. At the same time, when rolling large size, the roll shaft is stretched to different degrees under different rolling forces, and the height also changes to different degrees. Taking Nanjing Steel Plant as an example, the reducing sizing mill unit undertakes the task of rolling φ5.5-φ20 various specifications of finished products. For different specifications of spring steel, the rolling force is also different when rolling.

[0003] The usual measurement method is to measure the height of the rolling line in the natural vertical state. Although this method has some error compared with the actual rolling height, it can only meet the needs of a part of small size and small rolling force. At the same time, in order to improve the output, according to the requirements of the leaders, the rolling speed of small size, especially φ5.5, is increased from 105m / s to 108m / s. The increase of speed puts forward higher requirements for the accuracy of the height. In complex conditions, the actual height also changes to different degrees. If the change of the height of the reducing sizing mill roll box under different specifications of rolling cannot be known, it will usually cause wrong roll, large size change during rolling, and even cause steel pile.

[0004] Although the rolling force of small size is small, the speed is constantly increasing, and the rolling force of large size is often several times that of small size. Therefore, in order to eliminate the error between the vertical state and the actual state under the condition of complex situation, it is urgent to develop a measurement method which can simulate the actual height of the roll shaft of the roll box under the condition of real rolling. SUMMARY

[0005] The present application provides a simulation height measurement method of a reducing sizing mill roll box roll shaft, which simulates the actual height of the roll shaft of the roll box under the condition of real rolling, improves the accuracy of the rolling line height measurement, effectively reduces the frequency of accidents and the number of roll box replacement, and realizes cost reduction and efficiency increase.

[0006] Technical scheme: the simulation height measurement method of the reducing sizing mill roll box roll shaft, characterized in that it comprises the following steps:

[0007] 1) Connect the first and second threaded screws and the internal threaded hexagonal sleeve to form a rotating support frame. Use a torque wrench to measure the torque at different positions and record it on the rotating support frame.

[0008] 2) Insert the threaded ends of the two fixed connecting rods into the center holes of the two reducing and sizing roller shafts respectively and tighten them;

[0009] 3) Insert the round holes at both ends of the rotating support frame into the smooth round heads of the fixed connecting rods and adjust them to be horizontal;

[0010] 4) Rotate the internal hexagonal sleeve according to the rolling force table until the two fixed connecting rods are spread apart to a suitable torque to simulate the situation where the roller is spread apart by steel during actual rolling, and then measure the elevation.

[0011] In step 2), when using it for the first time, the two fixed connecting rods on both sides need to be screwed into the bottom of the reducing and sizing roller box at the same time to ensure symmetry on both sides.

[0012] In step 4), the internal thread hexagonal sleeve is rotated according to the rolling force table until the two fixed connecting rods are spread to the appropriate torque, and a scale is left on the internal thread hexagonal sleeve.

[0013] In step 2), the two fixed connecting rods are respectively inserted into the roller shaft of the reducing and sizing roller box, and the two fixed connecting rods are connected by a rotating support frame; the rotating support frame includes positive and negative threaded screws on both sides and an internal threaded hexagonal sleeve rod in the middle.

[0014] The two sides of the screw include a screw with two different threads.

[0015] The first and second threaded screws are connected to the internal hexagonal sleeve via corresponding threads.

[0016] The two screws, one with positive and negative threads, have holes at their ends.

[0017] The fixed connecting rod has a threaded structure at one end and a smooth round structure at the other end, with a raised hexagonal structure in the middle.

[0018] The fixed connecting rod is connected to the hole structure at the end of the positive and negative thread screw through a smooth circular structure.

[0019] The hexagonal structure is located below the rotating support frame and limits the rotation of the support frame.

[0020] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: The present invention simulates the actual elevation of the roll box and roller shaft when measuring the actual rolling conditions, which improves the accuracy of the rolling line elevation measurement, effectively reduces the frequency of accidents and the number of roll box replacements, and achieves cost reduction and efficiency improvement. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the measurement structure of the present invention;

[0022] Figure 2 Design a detailed table of rolling forces for various specifications of spring steel for Morgan.

[0023] In the figure, 1 is a fixed connecting rod; 2 is a first threaded screw; 3 is an internal threaded hexagonal sleeve; 4 is a second threaded screw; and 5 is the roller shaft of the sizing and reducing roller box. Detailed Implementation

[0024] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0025] The present invention discloses a method for simulating the elevation measurement of the roller shafts in a reducing sizing roll box, comprising the following steps: 1) Connecting the first and second threaded screws 2, the second threaded screw 4, and the internal threaded hexagonal sleeve 3 to form a rotating support frame, measuring the torque at different positions using a torque wrench and recording it on the rotating support frame. 2) Inserting the threaded ends of the two fixed connecting rods 1 into the center holes of the two reducing sizing roll boxes 5 respectively and tightening them. 3) Inserting the round holes at both ends of the rotating support frame into the smooth round ends of the fixed connecting rods 1 respectively and adjusting them to be horizontal. 4) Rotating the internal threaded hexagonal sleeve 3 according to the rolling force table until the two fixed connecting rods 1 are spread open to a suitable torque, thereby simulating the situation where the roller shaft is spread open by steel during actual rolling, and measuring the elevation. In step 2), during the first use, both fixed connecting rods 1 on both sides must be simultaneously screwed into the bottom of the reducing sizing roll box 5 to ensure symmetry on both sides. In step 4), rotate the internal thread hexagonal sleeve 3 according to the rolling force table until the two fixed connecting rods 1 are spread to the appropriate torque, and leave a scale on the internal thread hexagonal sleeve 3.

[0026] In this invention, two fixed connecting rods 1 are respectively inserted into the roller shaft 5 of the reducing and sizing roller box, and the two fixed connecting rods 1 are connected by a rotating support frame. The rotating support frame includes two threaded rods on both sides and a hexagonal sleeve 3 with internal threads in the middle. The two threaded rods on both sides include a first threaded rod 2 and a second threaded rod 4. The first threaded rod 2, the second threaded rod 4, and the hexagonal sleeve 3 are connected by corresponding threads. The ends of the first threaded rod 2 and the second threaded rod 4 have hole structures. One end of the fixed connecting rod 1 has a threaded structure, and the other end has a smooth round structure with a raised hexagonal structure in the middle. The fixed connecting rod 1 is connected to the hole structure at the end of the threaded rod through the smooth round structure. The hexagonal structure is located below the rotating support frame and limits the rotation of the support frame.

[0027] Example: First, insert the two fixed connecting rods into the threaded holes at the heads of the two rollers of the reducing and sizing roll box and tighten them. Then, screw the perforated positive and negative threaded rods into the internal thread hexagonal sleeves. For the first use, both sides should be screwed in simultaneously to the bottom to ensure symmetry. Next, place the standard gauge block to the bottom of the roller and rotate it several times to ensure that all surfaces of the gauge block are fully in contact with the roller's reference surface. Then, insert the holes on both sides into the fixed connecting rods tightened on the two rollers. Next, slowly rotate the internal thread hexagonal sleeve until it is slightly clamped. Finally, use a torque wrench to slowly rotate the hexagonal sleeve according to the different rolling force requirements in the rolling force table to achieve the actual requirement, and leave a mark on the hexagonal sleeve for future use. For the next use, place the depth gauge on the standard gauge block and reset it to zero. Then, place the measuring base surface firmly against the gauge block, and slowly push the depth gauge until the probe touches the roll box surface at the rolling center. When using the depth gauge, try to ensure that the measuring base surface and the roll box contact surface are in the same position for each measurement. Finally, according to the measurement on the hexagonal sleeve rod and the rolling force table, the roller box roller shaft elevation is measured in sequence to ensure that the roller shaft elevation error under each rolling force does not exceed 0.02mm.

Claims

1. A method for simulating the elevation measurement of the roller shaft of a reducing sizing roll box, characterized in that: Includes the following steps: 1) Connect the first and second threaded screws (2), the second threaded screw (4), and the internal threaded hexagonal sleeve (3) to form a rotating support frame. Use a torque wrench to measure the torque at different positions and record it on the rotating support frame. 2) Insert the threaded ends of the two fixed connecting rods (1) into the center holes of the two reducing and sizing roller shafts (5) respectively and tighten them; 3) Insert the round holes at both ends of the rotating support frame into the smooth round heads of the fixed connecting rod (1) and adjust them to be horizontal; 4) Rotate the internal hexagonal sleeve (3) according to the rolling force table until the two fixed connecting rods (1) are spread open to a suitable torque to simulate the situation where the roller is spread open by steel during actual rolling, and measure the elevation.

2. The method for simulating the elevation measurement of the roller shaft of the reducing sizing roll box according to claim 1, characterized in that: When using it for the first time in step 2), the two fixed connecting rods (1) on both sides need to be screwed into the bottom of the reducing and sizing roller box shaft (5) at the same time to ensure symmetry on both sides.

3. The method for simulating the elevation measurement of the roller shaft of the reducing sizing roll box according to claim 1, characterized in that: In step 4), rotate the internal thread hexagonal sleeve (3) according to the rolling force table until the two fixed connecting rods (1) are spread open to a suitable torque, and leave a scale on the internal thread hexagonal sleeve (3).

4. The method for simulating the elevation measurement of the roller shaft of the reducing sizing roll box according to claim 1, characterized in that: In step 2), the two fixed connecting rods (1) are respectively inserted into the roller shaft (5) of the sizing and reducing roller box, and the two fixed connecting rods (1) are connected by a rotating support frame; the rotating support frame includes positive and negative threaded screws on both sides and an internal threaded hexagonal sleeve rod (3) in the middle.

5. The method for simulating the elevation measurement of the roller shaft of the reducing sizing roll box according to claim 4, characterized in that: The two sides of the screw include screw one (2) and screw two (4).

6. The method for simulating the elevation measurement of the roller shaft of the reducing sizing roll box according to claim 5, characterized in that: The first and second threaded screws (2) and the third threaded screw (4) are connected to the internal threaded hexagonal sleeve (3) by corresponding threads.

7. The method for simulating the elevation measurement of the roller shaft of the reducing sizing roll box according to claim 6, characterized in that: The ends of the first (2) and the second (4) threaded screws are provided with holes.

8. The method for simulating the elevation measurement of the roller shaft of the reducing sizing roll box according to claim 7, characterized in that: The fixed connecting rod (1) has a threaded structure at one end and a smooth round structure at the other end, with a raised hexagonal structure in the middle.

9. The method for simulating the elevation measurement of the roller shaft of the reducing sizing roll box according to claim 8, characterized in that: The fixed connecting rod (1) is connected to the hole structure at the end of the positive and negative thread screw through a smooth circular structure.

10. The method for simulating the elevation measurement of the roller shaft of the reducing sizing roll box according to claim 8, characterized in that: The hexagonal structure is located below the rotating support frame and limits the rotation of the support frame.

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