A tool for measuring the effect of the Assel tube mill's housing angle or feed angle on the rolling angle

Abstract

The present invention provides a tool for measuring the influence of the arch rotation angle or feed angle of an Assel tube rolling mill on the rolling angle, the tool comprises a horizontal rod and a connecting rod, wherein one end of the connecting rod is inserted into one end of the horizontal rod, and the other end of the connecting rod is provided with a thread for connecting with the screw hole of the oil cover of the roller inlet section bearing; the tool also comprises a measuring ruler and a scale for indicating the change of the scale line on the measuring ruler, wherein the measuring ruler is connected to the other end of the horizontal rod through a first joint bearing, the measuring ruler is provided with a plurality of scale lines arranged in an arithmetic progression, the scale is connected to the horizontal rod through a second joint bearing, and the second joint bearing is located between the first joint bearing and the connecting rod; the present invention can quickly and accurately calibrate the rolling angle of the Assel tube rolling mill under different states and the influence of the arch rotation angle on the rolling angle.

Description

Technical Field

[0001] The invention belongs to the field of Assel tube rolling mills, and in particular relates to a tool for measuring the influence of a housing angle or a feeding angle of an Assel tube rolling mill on a rolling angle. Background Art

[0002] Both new and old mills need to be calibrated continuously to meet the equipment dimensional accuracy and ensure product quality. However, for the new Assel tube mill, we need to communicate with the manufacturer to determine the corresponding calibration points to ensure the accuracy of the calibration. For the old tube mill, the calibration accuracy of the tube mill will be affected by the wear of the equipment or the degree of damage to the calibration points. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a tool for measuring the influence of the arch angle or feed angle of the Assel tube rolling mill on the rolling angle, which can quickly and accurately calibrate the rolling angle of the Assel tube rolling mill under different conditions and the influence of the arch angle on the rolling angle.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a tool for measuring the influence of the rotation angle or feed angle of the Assel tube rolling mill on the rolling angle, the tool comprising a horizontal rod and a connecting rod, wherein one end of the connecting rod is inserted into one end of the horizontal rod, and the other end of the connecting rod is provided with a thread for connecting with the screw hole of the oil cover of the roller inlet section bearing; the tool also comprises a measuring ruler and a scale for indicating the change of the scale line on the measuring ruler, wherein the measuring ruler is connected to the other end of the horizontal rod through a first joint bearing, and the measuring ruler is provided with a plurality of scale lines arranged in an arithmetic progression, and the scale is connected to the horizontal rod through a second joint bearing, and the second joint bearing is located between the first joint bearing and the connecting rod.

[0005] Furthermore, the scale comprises a vertical rod and a horizontal rod which are arranged perpendicular to each other.

[0006] Furthermore, one end of the vertical rod is fixedly mounted on the cross rod and divides the cross rod into a first part and a second part, and the other end of the vertical rod is connected to the horizontal rod through the second joint bearing.

[0007] Further, the length of the first part is greater than that of the second part, and a tip portion for indicating the scale line is formed at the left end of the first part.

[0008] Furthermore, the second part is equipped with a counterweight for balancing the scale.

[0009] Furthermore, the length of the measuring ruler is not less than the vertical distance from the center line of the cross bar to the center line of the horizontal bar.

[0010] Furthermore, the distance from the center point of the first spherical bearing to the center point of the second spherical bearing is 1000 mm; and the vertical distance from the center line of the horizontal rod to the center line of the cross rod is 450 mm.

[0011] Furthermore, the vertical rod and the horizontal rod are integrally arranged.

[0012] The technical solution provided by the embodiment of the present invention has the following beneficial effects:

[0013] The invention can quickly and accurately calibrate the rolling angle of the Assel tube rolling mill under different conditions and the influence of the arch angle on the rolling angle, and also improves the assembly accuracy of the Assel tube rolling mill, thereby improving the thread depth of the inner surface of the steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view of the present invention;

[0015] Figure 2 It is a partial cross-section of the present invention;

[0016] Figure 3 This is a usage state diagram of the present invention.

[0017] The symbols in the figure are explained as follows:

[0018] Measuring ruler 1, horizontal rod 2, scale 3, connecting rod 4, vertical rod 5, cross rod 6, first part 63, second part 66, first joint bearing 7, second joint bearing 8, counterweight 9. DETAILED DESCRIPTION

[0019] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. Each example is provided by way of explanation of the present invention and does not limit the present invention. In fact, it will be clear to those skilled in the art that modifications and variations may be made in the present invention without departing from the scope or spirit of the present invention. For example, a feature shown or described as a part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desired that the present invention encompasses such modifications and variations within the scope of the appended claims and their equivalents.

[0020] In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention. The terms "connected", "connected" and "set" used in the present invention should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a direct connection or an indirect connection through an intermediate component; it can be a wired electrical connection, a radio connection, or a wireless communication signal connection. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0021] See also Figure 1 to Figure 2 According to an embodiment of the present invention, a tool for measuring the influence of the rotation angle or feed angle of an Assel tube mill on the rolling angle is provided, comprising a horizontal rod 2 and a connecting rod 4, wherein one end of the connecting rod 4 is inserted into one end of the horizontal rod 2. In other embodiments, the connecting rod 4 can be integrally arranged with the horizontal rod 2 so that the horizontal rod 2 and the connecting rod 4 become one rod, and the other end of the connecting rod 4 is provided with a thread for connecting with the screw hole of the oil cover of the roller inlet section bearing; the tool also includes a measuring ruler 1 and a scale 3, wherein the measuring ruler 1 is connected to the horizontal rod 2 through a first joint bearing 7, and a plurality of scale lines arranged in an arithmetic progression are provided on the measuring ruler 1, wherein the scale 3 is connected to the horizontal rod 2 through a second joint bearing 8, and the second joint bearing 8 is located between the first joint bearing 7 and the connecting rod 4.

[0022] One end of the connecting rod 4 of the present invention is inserted into one end of the horizontal rod 2, so that the center line of the connecting rod 4 is parallel to or coincides with the center line of the horizontal rod 2; the other end of the connecting rod 4 is provided with a thread for connecting with the screw hole of the oil cover of the inlet section bearing of the roll, so that the present invention can be quickly installed on the Assel pipe rolling mill; and because the depth direction of the screw hole is parallel to the axis of the roll, when the present invention is in use, the horizontal rod 2 is parallel to the axis of the roll.

[0023] The measuring ruler 1 of the present invention is connected to the horizontal rod 2 through the first joint bearing 7, so that the measuring ruler 1 can rotate 360° around the center of the first joint bearing 7, and because of the gravity of the measuring ruler 1, the measuring ruler 1 can always be perpendicular to the ground; at the same time, the scale 3 of the present invention is connected to the horizontal rod 2 through the second joint bearing 8, so that the scale 3 can rotate 360° around the center of the second joint bearing 8, and because of the gravity of the scale 3, the vertical rod 5 of the scale 3 can always be perpendicular to the ground. When the Assel tube mill has a rolling angle or a feeding angle, the scale 3 of the present invention will indicate a displacement difference on the measuring ruler 1, and the rolling angle or the feeding angle can be obtained by calculating the displacement difference.

[0024] When the present invention is used for measurement, the other end of the connecting rod 4 of the present invention is connected to the screw hole of the bearing oil cover of the inlet section of the roll through a thread. Since the depth direction of the screw hole is parallel to the axis of the roll, the horizontal rod 2 is parallel to the axis of the roll. Also, due to the gravity of the measuring ruler 1 and the scale 3, the vertical rods of the measuring ruler 1 and the scale 3 are always perpendicular to the ground. Therefore, the measuring ruler 1 and the scale 3 of the present invention can measure the value corresponding to the rolling angle, and the rolling angle can be calculated based on similar triangles and inverse tangents.

[0025] In this embodiment, in order to better measure the rolling angle, the scale 3 of the present invention includes a vertical rod 5 and a horizontal rod 6, and the vertical rod 5 and the horizontal rod 6 are integrally arranged. One end of the vertical rod 5 is fixedly mounted on the horizontal rod 6, and the horizontal rod 6 is divided into a first part 63 and a second part 66. The other end of the vertical rod 5 is connected to the horizontal rod 2 through a second joint bearing 8. The length of the first part 63 is greater than the length of the second part 66. A tip is formed at the left end of the first part 63, and the tip is used to indicate the scale line and the scale on the measuring ruler 1. The second part 66 is equipped with a counterweight 9 for balancing the scale 3, so that the vertical rod 5 always maintains a plumb state and the horizontal rod 6 always maintains a horizontal state. As for the way in which the counterweight 9 is assembled on the second part 66, any existing technology can be used.

[0026] In this embodiment, in order to better display the displacement difference indicated by the scale 3 on the measuring ruler 1, the length of the measuring ruler 1 is set to be greater than the vertical distance from the center line of the crossbar 6 to the center line of the horizontal rod 2. In other embodiments, the length of the measuring ruler 1 can also be set to be equal to the vertical distance from the center line of the crossbar 6 to the center line of the horizontal rod 2. In this embodiment, the distance from the center point of the first joint bearing 7 to the center point of the second joint bearing 8 is set to 1000mm; the vertical distance from the center line of the horizontal rod 2 to the center line of the crossbar 6 is set to 450mm.

[0027] See also Figure 3 As shown, an embodiment of the tool for measuring the influence of the housing angle of the Assel tube mill on the rolling angle provided by the present invention, wherein the working principle and operation method are as follows:

[0028] Installation position: The other end of the connecting rod 4 of the present invention can be directly installed on the oil cover screw hole at the small end of the roller (upper roller) through a thread. The oil cover screw hole at the small end of the roller (upper roller) refers to the oil cover screw hole of the roller inlet section bearing.

[0029] Measuring tool parameters: Both points A and D use joint bearings (make sure that the measuring ruler 1 and the scale 3 are always vertically downward), and the length of the measuring ruler 1 is equal to the vertical length of the scale 3. The distance between points A and D is 1000mm. If you want to improve the measurement accuracy, you can increase the distance between points A and D. The above-mentioned point A is the center point of the first joint bearing 7, and point D is the center point of the second joint bearing 8.

[0030] How the measurement works:

[0031] Since the depth direction of the screw hole is parallel to the axis of the roller, when the present invention is installed to the screw hole of the roller (upper roller), the horizontal rod 2 of the present invention is parallel to the axis of the roller.

[0032] The corresponding rolling angle can be obtained through similar triangles (the calculation method is as follows).

[0033] The present invention measures the influence of the arch rotation angle of the Assel tube rolling mill on the rolling angle: through the above steps, the state of the roller when the rolling angle is 0° can be found. When the rolling angle of the Assel roller is equal to 0° (that is, the rolling angle of the Assel tube rolling mill is not changed), by adjusting the arch rotation angle of the Assel tube rolling mill, the corresponding changed rolling angle can be determined by the change value measured by the present invention (the calculation method is the same as above).

[0034] When the arch angle is increased, the rolling angle will increase with the arch angle. Because the outlet section of the Assel tube mill is fixed and the inlet section rotates around the rolling center line, when the arch angle is adjusted, the rolling angle will also be adjusted with the arch angle.

[0035] Calculation steps (see Figure 3 shown):

[0036] Because the other end of the connecting rod 4 is installed on the upper roller of the Assel tube mill through threads, the horizontal rod 2 of the present invention is parallel to the axis of the roller, that is, AD||axis of the roller, AD=1000mm.

[0037] Because the points A and D of the present invention are connected by a joint bearing, AB and CD are always perpendicular to the ground through their own gravity.

[0038] Since the length of AB is equal to the length of CD, when the rolling angle of the Assel tube mill roll changes, the tip of the crossbar 6 can indicate the change of the scale line on the measuring ruler 1, that is, Figure 3 BB'=x. The AB length refers to the vertical distance from the tip of the cross bar 6 to the center point of the first joint bearing 7 when the horizontal bar 2 of the present invention is placed horizontally, and the CD length refers to the vertical distance from the center line of the cross bar 6 to the center line of the horizontal bar 2.

[0039] From similar triangles, we know that the tangent value of the rolling angle of the Assel tube mill roll is equal to Tan∠BCB'=x / 1000, where Figure 3 ∠BCB' in the equation is the rolling angle, and the rolling angle can be calculated using the inverse tangent arctan.

[0040] Similarly, the influence of the Assel tube mill arch angle on the rolling angle can also be calculated through the numerical difference of the measuring device.

[0041] Through the above description of the present invention, the present invention can quickly and accurately calibrate the rolling angle of the Assel tube rolling mill under different conditions and the influence of the arch angle on the rolling angle, and also improve the assembly accuracy of the Assel tube rolling mill, thereby improving the thread depth of the inner surface of the steel pipe.

[0042] The comparison table of thread depth of steel pipe produced by using the rolling angle measurement of the Assel tube mill according to the present invention and the steel pipe produced by not using the rolling angle measurement of the Assel tube mill according to the present invention is as follows:

[0043]

[0044] 1. The data in the above table are for steel pipes produced under the same temperature, same steel grade, same specification and same process parameters.

[0045] 2. The thread depth before improvement in the above table refers to the thread depth of the steel pipe produced without using the present invention to measure the rolling angle of the Assel pipe mill.

[0046] 3. The improved thread depth in the above table refers to the thread depth of the steel pipe produced by measuring the rolling angle of the Assel pipe mill using the present invention.

[0047] For this measuring tool, no matter whether the feed angle is adjusted or the arch is rotated, the screw hole of the oil cover of the roller inlet section bearing will move, thereby driving the right end of the connecting rod 4 connected to the screw hole of the oil cover of the roller inlet section bearing to move, thereby causing the horizontal rod 2 to rotate. The rotation of the horizontal rod 2 causes the measuring ruler 1 to move up and down, thereby causing the position pointed by the tip of the ruler 3 to change. Assume that before adjusting the feed angle or rotating the arch, the position pointed by the tip of the ruler 3 is B, and the intersection of the vertical rod 5 and the horizontal rod 6 is C, and after adjusting the feed angle or rotating the arch, the position pointed by the tip of the ruler 3 is B', then the angle BCB' is the change in the rolling angle caused by adjusting the feed angle or rotating the arch.

[0048] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the above disclosed embodiments are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. A tool for measuring the effect of the housing angle or feed angle on the rolling angle of an Assel tube mill, characterized in that: The tool comprises a horizontal rod, a connecting rod, One end of the connecting rod is inserted into one end of the horizontal rod, and the other end of the connecting rod is provided with a thread for connecting with the screw hole of the oil cover of the roller inlet section bearing; The tool also includes a measuring ruler and a scale for indicating changes in scale lines on the measuring ruler. The measuring ruler is connected to the other end of the horizontal rod through a first joint bearing, and the measuring ruler is provided with a plurality of scale lines arranged in an arithmetic progression. The scale is connected to the horizontal rod via a second joint bearing, and the second joint bearing is located between the first joint bearing and the connecting rod; The scale comprises a vertical rod and a horizontal rod which are arranged perpendicular to each other; The horizontal rod and the connecting rod are integrally arranged.

2. The tool according to claim 1, characterized in that One end of the vertical rod is fixedly mounted on the cross rod, and the cross rod is divided into a first part and a second part. The other end of the vertical rod is connected to the horizontal rod through the second joint bearing.

3. The tool according to claim 2, characterized in that The length of the first portion is greater than that of the second portion, and a tip portion for indicating the scale line is formed at a left end of the first portion.

4. The tool according to claim 2, characterized in that The second part is equipped with a counterweight for balancing the scale.

5. The tool according to claim 1, characterized in that The length of the measuring ruler is not less than the vertical distance from the center line of the cross bar to the center line of the horizontal bar.

6. The tool according to claim 1, characterized in that The distance between the center point of the first spherical plain bearing and the center point of the second spherical plain bearing is 1000 mm; The vertical distance from the center line of the horizontal rod to the center line of the cross rod is 450 mm.

7. The tool according to claim 1, characterized in that The vertical rod and the horizontal rod are arranged integrally.

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