Arc block positioning aid and ybc measuring scale

Abstract

The application discloses an arc block positioning auxiliary tool and a YBC measuring scale, and belongs to the technical field of numerical control bending forming of pipelines, and solves the problem of poor support stability in the pipeline measuring process in the prior art. The arc block positioning auxiliary tool is used for supporting the bent pipeline, and the arc block positioning auxiliary tool comprises a guide block and a sliding block. The surface of the guide block facing the bent pipeline and the surface of the sliding block facing the bent pipeline are both provided with an arc-shaped support groove. The bent pipeline is matched with the inner wall of the arc-shaped support groove, and the bent pipeline is arranged in the arc-shaped support groove. The guide block and the sliding block are provided with an arc-shaped guide groove and an arc-shaped protrusion which are matched with each other. The arc-shaped protrusion is inserted into the arc-shaped guide groove to realize the sliding connection between the guide block and the sliding block around the axial direction of the bent pipeline. The application can be used for YBC parameter measurement of the bent pipeline.

Description

Technical Field

[0001] The invention belongs to the technical field of pipeline numerical control bending and forming, and in particular relates to an arc block positioning auxiliary tool and a YBC measuring ruler. Background Art

[0002] At present, in the field of pipe bending and forming, a measuring ruler is used to measure the YBC data of the bent pipe.

[0003] However, during the measurement process, the measuring ruler usually only contacts the side or edge of the curved pipeline and cannot stably support the curved pipeline, which easily leads to inaccurate measurement data. Summary of the Invention

[0004] In view of the above analysis, the present invention aims to provide a YBC measuring ruler, which solves the problem in the prior art that the measuring ruler cannot stably support the curved pipeline, resulting in inaccurate measurement data.

[0005] The purpose of the present invention is mainly achieved through the following technical solutions:

[0006] The present invention provides an arc block positioning aid for supporting curved pipelines. The arc block positioning aid includes a guide block and a slider. The surface of the guide block facing the curved pipeline and the surface of the slider facing the curved pipeline are both provided with arc-shaped support grooves. The curved pipeline matches the inner wall of the arc-shaped support groove, and the curved pipeline is placed in the arc-shaped support groove; an arc-shaped guide groove and an arc-shaped protrusion that cooperate with each other are provided between the guide block and the slider, and the arc-shaped protrusion is inserted into the arc-shaped guide groove to realize a sliding connection between the guide block and the slider around the axial direction of the curved pipeline.

[0007] Furthermore, the guide block and the sliding block are arranged along the axial direction of the second straight pipe section.

[0008] Furthermore, the outer diameter of the curved pipeline is equal to the radius of the arc-shaped supporting groove.

[0009] Furthermore, the cross-sectional shape of the guide block and the sliding block along the curved pipe path is semicircular.

[0010] Furthermore, there are multiple arc block positioning aids; the planes of two adjacent guide blocks are oriented in opposite directions, and the planes of two adjacent sliders are oriented in opposite directions.

[0011] Furthermore, the guide block includes a guide block body, a connecting arc plate and a guide arc plate. The guide arc plate is fixedly connected to the guide block body through the connecting arc plate, and the guide arc plate protrudes toward one side of the center of the guide block body, forming an arc guide groove between the guide block body, the connecting arc plate and the guide arc plate.

[0012] Furthermore, the slider includes a slider body, and the slider body is in the shape of a semi-cylinder.

[0013] Furthermore, the arc-shaped protrusion is provided on the arc surface edge of the slider body.

[0014] The present invention also provides a YBC measuring ruler including the arc block positioning aid.

[0015] Furthermore, for measuring YBC parameters of a curved pipeline, the curved pipeline includes a first straight pipe section, a second straight pipe section and a third straight pipe section connected in sequence, and the YBC measuring ruler also includes a first ruler, a second ruler, a third ruler and a fourth ruler; the first ruler is arranged along the axial direction of the first straight pipe section, the second ruler is arranged along the axial direction of the second straight pipe section, the third ruler is arranged along the axial direction of the second straight pipe section, and the fourth ruler is arranged along the axial direction of the third straight pipe section; the surface of the slider facing the second straight pipe section is parallel to the plane formed by the first ruler and the second ruler, and the surface of the guide block facing the second straight pipe section is parallel to the plane formed by the third ruler and the fourth ruler; by measuring the angle between the guide block and the slider, the angle between the plane formed by the first ruler and the second ruler and the plane formed by the third ruler and the fourth ruler is obtained.

[0016] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0017] A) The arc block positioning aid provided by the present invention has dual functions. On the one hand, the surface of the guide block facing the second straight pipe segment is parallel to the plane formed by the first and second straight pipe segments, and the sliding block faces parallel to the plane formed by the second and third straight pipe segments. By measuring the angle between the guide block and the sliding block, the angle between the plane formed by the first and second straight pipe segments and the plane formed by the second and third straight pipe segments can be obtained. On the other hand, the surface of the guide block facing the second straight pipe segment and the surface of the sliding block facing the second straight pipe segment are both provided with an arc-shaped support groove. The second straight pipe segment matches the inner wall of the arc-shaped support groove. The second straight pipe segment is placed in the arc-shaped support groove, thereby achieving stable support for the second straight pipe segment.

[0018] B) The YBC measuring ruler of the present invention can replace the current bending manufacturing inspection fixture. It can accurately measure YBC parameters under conditions with limited space and conditions, for example, without the availability of three-dimensional measurement and scanning technology. It can reduce the difficulty and workload of bending manufacturing, measurement and feedback, and revision procedures, and reduce the repetitive sampling work caused by subjective judgment. It greatly speeds up the optimization of pipeline direction and production speed, helps to ensure production progress, and has the characteristics of simple operation, easy implementation, low cost, convenient and fast use, and accurate measurement.

[0019] Other features and advantages of the present invention will be described in the following description, and part of them will become obvious from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are only for the purpose of illustrating particular embodiments and are not to be considered limiting of the present invention. Like reference symbols denote like parts throughout the drawings.

[0021] Figure 1a A schematic structural diagram of a guide block in an arc block positioning aid provided in Example 1 of the present invention;

[0022] Figure 1b A schematic diagram of the structure of the guide block in the arc block positioning aid provided in the first embodiment of the present invention in another direction;

[0023] Figure 2 A schematic structural diagram of a slider in an arc block positioning aid provided in the first embodiment of the present invention;

[0024] Figure 3 A schematic structural diagram of a YBC measuring ruler provided in the second embodiment of the present invention;

[0025] Figure 4a A schematic structural diagram of the second ruler in the YBC measuring ruler provided in the second embodiment of the present invention;

[0026] Figure 4b Schematic diagram of the assembly of the first and second rulers of the YBC measuring ruler provided in the second embodiment of the present invention;

[0027] Figure 5 A partial schematic diagram of a YBC measuring ruler provided in the second embodiment of the present invention;

[0028] Figure 6 A schematic diagram of the actual length position measured in the YBC measuring ruler provided in the second embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of the length position of the actual parameter Y in the YBC measuring ruler provided in the second embodiment of the present invention.

[0030] Reference numerals:

[0031] 1-first straight ruler; 2-second straight ruler; 3-third straight ruler; 4-fourth straight ruler; 5-bent pipe; 6-guide block; 61-guide block body; 62-connecting arc plate; 63-guide arc plate; 7-slider; 8-guide block fixing block; 9-guide block screw; 10-slider fixing block; 11-blind hole; 12-through hole; 13-first fixing piece; 14-first fixing screw; 15-slider screw. DETAILED DESCRIPTION

[0032] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used to explain the principles of the present invention together with the embodiments of the present invention.

[0033] Example 1

[0034] This embodiment provides an arc block positioning aid, see Figure 1a 、 Figure 1b and Figure 2 , including a guide block 6 and a slider 7, wherein the guide block 6 is the master transfer block in the master-slave transfer block, and the slider 7 is the slave transfer block in the master-slave transfer block. The guide block 6 and the slider 7 are arranged along the axial direction of the second straight pipe section, and the surface of the guide block 6 facing the second straight pipe section and the surface of the slider 7 facing the second straight pipe section are both provided with an arc-shaped support groove. The second straight pipe section matches the inner wall of the arc-shaped support groove, that is, the outer diameter of the second straight pipe section is equal to the radius of the arc-shaped support groove. The second straight pipe section is placed in the arc-shaped support groove, thereby achieving stable support for the second straight pipe section; an arc-shaped guide groove and an arc-shaped protrusion that cooperate with each other are provided between the guide block 6 and the slider 7, and the arc-shaped protrusion is inserted into the arc-shaped guide groove to realize a sliding connection between the guide block 6 and the slider 7 around the axial direction of the second straight pipe section.

[0035] It should be noted that, when the length of the second straight pipe section is longer, the number of arc block positioning aids can be multiple, and the directions of two adjacent arc block positioning aids are opposite, that is, the directions of two adjacent guide blocks 6 are opposite, and the directions of two adjacent sliders 7 are opposite.

[0036] Compared with the prior art, the arc block positioning aid of this embodiment has a dual function. On the one hand, the surface of the guide block 6 facing the second straight pipe segment (i.e., the plane of the guide block 6) is parallel to the plane formed by the first straight pipe segment and the second straight pipe segment, and the sliding block 7 is parallel to the plane formed by the second straight pipe segment and the third straight pipe segment. By measuring the angle between the guide block 6 and the sliding block 7, the angle between the plane formed by the first straight pipe segment and the second straight pipe segment and the plane formed by the second straight pipe segment and the third straight pipe segment can be obtained (i.e., parameter B); on the other hand, the surface of the guide block 6 facing the second straight pipe segment and the surface of the sliding block 7 facing the second straight pipe segment are both provided with an arc-shaped support groove. The second straight pipe segment matches the inner wall of the arc-shaped support groove. The second straight pipe segment is placed in the arc-shaped support groove, thereby achieving stable support for the second straight pipe segment.

[0037] It should be noted that, in order to directly measure the angle between the guide block 6 and the slider 7 , the surface of the guide block 6 facing the slider 7 is provided with scale lines or angle cursor dimension lines.

[0038] Exemplarily, the cross-sectional shape of the guide block 6 and the sliding block 7 along the radial direction of the second straight pipe section is semicircular, and accordingly, the guide block 6 and the sliding block 7 both have a flat surface and an arc surface.

[0039] For the structure of the guide block 6, see Figure 1a to Figure 1bIt includes a guide block body 61, a connecting arc plate 62 and a guide arc plate 63. The guide block body 61 is in the shape of a semi-cylinder. The arc support surface is opened on the plane of the guide block body 61 along the axial direction of the second straight pipe section. The connecting arc plate 62 and the guide arc plate 63 are arranged on the arc surface edge of the guide block body 61, and the connecting arc plate 62, the guide arc plate 63 and the guide block body 61 are arranged concentrically. The guide arc plate 63 is fixedly connected to the guide block body 61 through the connecting arc plate 62 and the guide arc plate 63 protrudes from the connecting arc plate 62 toward the side of the center of the guide block body 61, thereby forming an arc guide groove between the guide block body 61, the connecting arc plate 62 and the guide arc plate 63.

[0040] As for the structure of the slider 7, specifically, see Figure 4, it includes a slider body, the shape of the slider body is semi-cylindrical, the arc-shaped support surface is opened on the plane of the slider body along the axial direction of the second straight pipe section, and the arc-shaped protrusion is provided on the arc surface edge of the slider body.

[0041] Example 2

[0042] This embodiment provides a YBC measuring ruler, see Figure 3 and Figure 5 The curved pipeline 5 includes a first straight pipe section, a second straight pipe section and a third straight pipe section connected in sequence. The YBC measuring ruler includes a first straight ruler 1, a second straight ruler 2, a third straight ruler 3, a fourth straight ruler 4 and the arc block positioning aid provided in Example 1.

[0043] The surface of the slider 7 facing the second straight pipe section is parallel to the plane formed by the first ruler 1 and the second ruler 2, and the surface of the guide block 6 facing the second straight pipe section is parallel to the plane formed by the third ruler 3 and the fourth ruler 4. By measuring the angle between the guide block 6 and the slider 7, the angle between the plane formed by the first ruler 1 and the second ruler 2 and the plane formed by the third ruler 3 and the fourth ruler 4 can be obtained (i.e., parameter B).

[0044] The first ruler 1 and the second ruler 2 are rotatably connected and their relative positions can be fixed. The first ruler 1 is arranged along the axial direction of the first straight pipe section, and the side surface of the first ruler 1 is in contact with the first straight pipe section; the second ruler 2 is arranged along the axial direction of the second straight pipe section, and the side surface of the second ruler 2 is in contact with the second straight pipe section. By measuring the angle between the first ruler 1 and the second ruler 2, the bending angle (i.e., parameter C1) of the first straight pipe section and the second straight pipe section can be obtained.

[0045] The third ruler 3 and the fourth ruler 4 are rotatably connected and their relative positions can be fixed. The third ruler 3 is arranged along the axial direction of the second straight pipe section and the side surface of the third ruler 3 is in contact with the side surface of the second straight pipe section. The fourth ruler 4 is arranged along the axial direction of the third straight pipe section and the side surface of the fourth ruler 4 is in contact with the side surface of the third straight pipe section. By measuring the angle between the third ruler 3 and the fourth ruler 4, the bending angle (i.e., parameter C2) between the second straight pipe section and the third straight pipe section can be obtained.

[0046] The measurement process includes the following steps:

[0047] Preliminary positioning of the first straight ruler 1 and the first straight pipe section, preliminary positioning of the second straight ruler 2 and the second straight pipe section, preliminary positioning of the third straight ruler 3 and the second straight pipe section, and preliminary positioning of the fourth straight ruler 4 and the third straight pipe section;

[0048] Adjust the fitting clearances between the first ruler 1 and the first straight pipe section, the second ruler 2 and the second straight pipe section, the third ruler 3 and the second straight pipe section, and the fourth ruler 4 and the third straight pipe section so that the first ruler 1 is arranged along the axial direction of the first straight pipe section and lies in the same plane, the second ruler 2 is arranged along the axial direction of the second straight pipe section and lies in the same plane, the third ruler 3 is arranged along the axial direction of the second straight pipe section and lies in the same plane, and the fourth ruler 4 is arranged along the axial direction of the third straight pipe section and lies in the same plane;

[0049] By measuring the angle between the first ruler 1 and the second ruler 2, the bending angle between the first straight pipe section and the second straight pipe section (i.e., parameter C1) can be obtained;

[0050] By measuring the angle between the third ruler 3 and the fourth ruler 4, the bending angle between the second straight pipe section and the third straight pipe section (i.e., parameter C2) can be obtained;

[0051] By measuring the angle between the guide block 6 and the slider 7, we can obtain the angle (i.e., parameter B) between the plane formed by the first and second rulers 1 and 2 and the plane formed by the third and fourth rulers 3 and 4.

[0052] Measure the vertical distance L1 between the first straight pipe section away from the end of the first curved pipe section and the intersection of the first ruler 1 and the second ruler 2 to calculate the length Y1 of the first straight pipe section. Measure the vertical distance L2 between the intersection of the first ruler 1 and the second ruler 2 and the intersection of the third ruler 3 and the fourth ruler 4 to calculate the length Y2 of the second straight pipe section. Measure the vertical distance L3 between the intersection of the third ruler 3 and the fourth ruler 4 and the third straight pipe section away from the end of the second curved pipe section to calculate the length Y3 of the third straight pipe section. Figures 6 and 7 .

[0053] Compared with the prior art, the beneficial effects of the YBC measuring ruler provided in this embodiment are substantially the same as the beneficial effects of the arc block positioning aid provided in the first embodiment, and are not described in detail here.

[0054] At the same time, the above-mentioned YBC measuring ruler can replace the current bending manufacturing inspection fixture. When the site and conditions are limited, for example, when there is no three-dimensional measurement and scanning technology, it can accurately measure the YBC parameters, reduce the difficulty and workload of bending manufacturing, measurement and feedback, and revision procedures, reduce the repeated sampling work caused by subjective judgment, greatly speed up the optimization of pipeline direction and production speed, help to ensure production progress, and has the characteristics of simple operation, easy implementation, low cost, convenient and fast use, and accurate measurement.

[0055] Specifically, the structures of the first ruler 1, the second ruler 2, the third ruler 3 and the fourth ruler 4 are basically the same, see Figures 3 to 4b , including a ruler body, a blind hole is opened on the ruler body, and a through hole 12 is opened at the bottom of the blind hole, so that a stepped inner wall can be formed on the ruler body.

[0056] For example, the shapes of the two ends of the ruler body can be semicircular, and the radius of the semicircle is half of the width of the ruler body. The shapes of the two ends of the blind hole and the two ends of the through hole 12 can be semicircular or square.

[0057] In order to achieve the connection between the first ruler 1 and the second ruler 2, the above-mentioned YBC measuring ruler also includes a first fixing member 13 and a first fixing screw 14 and a first fixing nut that cooperate with each other. The first fixing screw passes through the first fixing member 13, the first ruler 1 and the second ruler 2 and is detachably fixed to the first fixing nut.

[0058] In order to reduce the shaking between the first ruler 1 and the second ruler 2, the first fixing member 13 is located in the blind hole of the first ruler 1 and / or the first fixing member 13 is located in the blind hole 11 of the second ruler 2. The first fixing member 13 cooperates with the blind hole of the first ruler 1 and / or the blind hole 11 of the second ruler 2 to ensure that the angle between the first ruler 1 and the second ruler 2 is stable after the first fixing screw is tightened and will not be easily deformed.

[0059] In order to achieve alignment between the third ruler 3 and the fourth ruler 4, the above-mentioned YBC measuring ruler also includes a second fixing piece and a second fixing screw and a second fixing nut that cooperate with each other. The second fixing screw passes through the second fixing piece, the third ruler 3 and the fourth ruler 4 and is detachably fixedly connected to the second fixing nut. In order to reduce the shaking between the third ruler 3 and the fourth ruler 4, the second fixing piece is located in the blind hole of the third ruler 3 and / or the second fixing piece is located in the blind hole of the fourth ruler 4, and the second fixing piece cooperates with the blind hole of the third ruler 3 and / or the blind hole of the fourth ruler 4.

[0060] It should be noted that there is only one first fixing member 13 , which can be located in one of the blind holes 11 of the first ruler 1 and the second ruler 2 .

[0061] Alternatively, there are two first fixing members 13 , one of which is located in the blind hole of the first ruler 1 , and the other is located in the blind hole 11 of the second ruler 2 .

[0062] Similarly, there is only one second fixing member, which can be located in one of the blind holes of the third ruler 3 and the fourth ruler 4 .

[0063] Alternatively, there are two second fixing members, one of which is located in the blind hole of the third ruler 3 , and the other is located in the blind hole of the fourth ruler 4 .

[0064] In order to achieve a fixed connection between the guide block body 61 and the third ruler 3, the above-mentioned YBC measuring ruler also includes a guide block fixing block 8. The guide block screw 9 passes through the guide block fixing block 8 and the third ruler 3 and is detachably fixedly connected to the guide block 6 mounting hole on the guide block body 61.

[0065] For example, the edge of the guide block fixing block 8 is 0.2 to 0.9 mm smaller than the distance between the arc guide groove and the axis of the second straight pipe section. In addition, the width of the guide block fixing block 8 is equal to the width of the blind hole on the third ruler 3.

[0066] Similarly, in order to achieve a fixed connection between the slider body and the second ruler 2, the above-mentioned YBC measuring ruler also includes a slider fixing block 10. The slider screw 15 passes through the slider fixing block 10 and the second ruler 2 and is detachably fixedly connected to the slider 7 mounting hole on the slider body. The width of the slider fixing block 10 is equal to the width of the blind hole 11 on the second ruler 2.

[0067] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed by the present invention should be covered by the scope of protection of the present invention.

Claims

1. An arc block positioning aid, characterized in that: Used for supporting curved pipelines, the arc block positioning aid includes a guide block and a slider. The surface of the guide block facing the curved pipeline and the surface of the slider facing the curved pipeline are both provided with an arc-shaped support groove. The curved pipeline matches the inner wall of the arc-shaped support groove, and the curved pipeline is placed in the arc-shaped support groove; The guide block and the slider are provided with an arc-shaped guide groove and an arc-shaped protrusion that cooperate with each other, and the arc-shaped protrusion is inserted into the arc-shaped guide groove to realize a sliding connection between the guide block and the slider around the axial direction of the curved pipeline; the cross-sectional shape of the guide block and the slider along the curved pipeline is semicircular; the number of the arc block positioning aids is multiple; the planes of two adjacent guide blocks are oriented in opposite directions, and the planes of two adjacent sliders are oriented in opposite directions; the guide block includes a guide block body, a connecting arc plate and a guide arc plate, and the guide arc plate is fixedly connected to the guide block body through the connecting arc plate and the guide arc plate protrudes toward the side of the center of the guide block body to form an arc guide groove between the guide block body, the connecting arc plate and the guide arc plate; the slider includes a slider body, and the shape of the slider body is semi-cylindrical; the arc-shaped protrusion is provided on the arc surface edge of the slider body.

2. The arc block positioning aid according to claim 1, characterized in that: The guide block and the sliding block are arranged along the axial direction of the second straight pipe section.

3. The arc block positioning aid according to claim 1, characterized in that: The outer diameter of the curved pipeline is equal to the radius of the arc-shaped supporting groove.

4. A YBC measuring ruler, characterized in that: Comprising the arc block positioning aid according to any one of claims 1 to 3; The YBC measuring ruler is used for measuring YBC parameters of a curved pipeline, wherein the curved pipeline includes a first straight pipe section, a second straight pipe section, and a third straight pipe section connected in sequence, and the YBC measuring ruler also includes a first straight ruler, a second straight ruler, a third straight ruler, and a fourth straight ruler; The first ruler is arranged along the axial direction of the first straight pipe section, the second ruler is arranged along the axial direction of the second straight pipe section, the third ruler is arranged along the axial direction of the second straight pipe section, and the fourth ruler is arranged along the axial direction of the third straight pipe section; The surface of the slider facing the second straight pipe section is parallel to the plane formed by the first ruler and the second ruler, and the surface of the guide block facing the second straight pipe section is parallel to the plane formed by the third ruler and the fourth ruler. By measuring the angle between the guide block and the slider, the angle between the plane formed by the first ruler and the second ruler and the plane formed by the third ruler and the fourth ruler is obtained.

Images