Arc block positioning type precision measuring scale

Abstract

The application discloses an arc block positioning type precise measuring scale, belongs to the technical field of numerical control bending forming of a catheter, and solves the problems of long trial and error period and complex process of the catheter measurement in the prior art. In the measuring scale, the arc block positioning piece comprises a guide block and a sliding block, the guide block and the sliding block are arranged along the axial direction of the second straight pipe section, the surface of the sliding block facing the second straight pipe section is parallel to the plane formed by the first straight ruler and the second straight ruler, and the surface of the guide block facing the second straight pipe section is parallel to the plane formed by the third straight ruler and the fourth straight ruler; the guide block and the sliding block are provided with an arc-shaped guide groove and an arc-shaped protrusion 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 second straight pipe section. The application can be used for YBC parameter measurement of a bent catheter.

Description

Technical Field

[0001] This invention belongs to the field of CNC bending and forming technology of conduit, and particularly relates to an arc block positioning precision measuring ruler. Background Technology

[0002] Currently, in the field of conduit bending forming, trial assembly fixtures are generally used for quality control of the two end positions. However, in the manufacturing process of conduit bending, the measurement and feedback of deviation values ​​determine the number of bending adjustments and the final product accuracy. The measurement method and the accuracy of the measuring tools have a significant impact on the deviation values. Moreover, after the product is fully assembled and the conduit installation conditions are met, conduit sampling can be carried out to finally determine the conduit's qualification.

[0003] Therefore, the typical catheter manufacturing process, including bending manufacturing, final assembly, catheter sampling and adjustment, re-bending and re-adjustment, etc., requires a large amount of trial and error time, waiting, coordination, and repeated iterations.

[0004] The use of trial assembly fixtures is a common method for controlling the processing quality of parts. Trial assembly fixtures include dimensional inspection and data feedback functions for duct products, and their production cycle is relatively long and the cost is high. In aerospace products, the precision requirements for ducts are extremely strict. The bending angle, the length of the straight section, and the angle of the rotation surface of the pipeline affect the position of the two ends of the pipe, the fixed position in the middle, and the clearance requirements with the cabin wall. Summary of the Invention

[0005] Based on the above analysis, the present invention aims to provide an arc-block positioning precision measuring ruler, which solves the problems of long trial-and-error cycles and complex processes in the existing conduit measurement technology.

[0006] The objective of this invention is mainly achieved through the following technical solutions:

[0007] This invention provides an arc-block positioning precision measuring ruler for measuring the YBC parameters of a curved conduit. The arc-block positioning precision measuring ruler includes a first ruler, a second ruler, a third ruler, a fourth ruler, and an arc-block positioning component. The first and second rulers are rotatably connected and their relative positions can be fixed. The first ruler is positioned along the axial direction of a first straight pipe segment, and the second ruler is positioned along the axial direction of a second straight pipe segment. The third and fourth rulers are rotatably connected and their relative positions can be fixed. The third ruler is positioned along the axial direction of the second straight pipe segment, and the fourth ruler is positioned along the axial direction of the third straight pipe segment. The arc-block positioning component includes a guide block and a slider. The guide block and slider are positioned along the axial direction of the second straight pipe segment. The surface of the slider facing the second straight pipe segment is parallel to the plane formed by the first and second rulers, and the surface of the guide block facing the second straight pipe segment is parallel to the plane formed by the third and fourth rulers. An interlocking arc-shaped guide groove and an arc-shaped protrusion are provided between the guide block and the slider. The arc-shaped protrusion is inserted into the arc-shaped guide groove to achieve a sliding connection between the guide block and the slider around the axial direction of the second straight pipe segment.

[0008] Furthermore, the number of arc block positioning components can be multiple.

[0009] Furthermore, the surface of the guide block facing the slider is provided with scale lines or angle vernier dimension lines.

[0010] Furthermore, the first, second, third, and fourth rulers all include a ruler body, on which blind holes are opened, and through holes are opened at the bottom of the blind holes.

[0011] Furthermore, the guide block is shaped like a semi-cylinder.

[0012] Furthermore, the guide block includes a guide block body, a connecting arc plate, and a guiding arc plate; the connecting arc plate and the guiding arc plate are located on the arc edge of the guide block body, and the guiding arc plate is fixedly connected to the guide block body through the connecting arc plate. The guiding arc plate protrudes from the connecting arc plate toward the center of the guide block body, forming an arc-shaped guide groove between the guide block body, the connecting arc plate, and the guiding arc plate.

[0013] Furthermore, the connecting arc plate, guide arc plate, and guide block are concentrically arranged.

[0014] Furthermore, it also includes a guide block fixing block, and the guide block screw passes through the guide block fixing block and the third ruler and is detachably and fixedly connected to the guide block mounting hole on the guide block body.

[0015] Furthermore, the edge of the guide block fixing block is 0.2 to 0.9 mm smaller than the distance between the arc-shaped guide groove and the axis of the second straight pipe section.

[0016] Furthermore, the width of the guide block fixing block is equal to the width of the blind hole on the third ruler.

[0017] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0018] A) In the arc-block positioning precision measuring ruler provided by the present invention, the arc-block positioning component has a dual function. On the one hand, the surface of the guide block facing the second straight pipe section is parallel to the plane formed by the first and second rulers, and the surface of the slider facing the second straight pipe section is parallel to the plane formed by the third and fourth rulers. By measuring the angle between the guide block and the slider, the included angle between the plane formed by the first and second rulers and the plane formed by the third and fourth rulers can be obtained. On the other hand, arc-shaped support grooves are opened on both the surface of the guide block facing the second straight pipe section and the surface of the slider facing the second straight pipe section. The second straight pipe section matches the inner wall of the arc-shaped support groove, and the second straight pipe section is placed in the arc-shaped support groove, thereby achieving stable support for the second straight pipe section.

[0019] B) The arc-block positioning precision measuring ruler provided by this invention can replace the existing bending manufacturing inspection fixture. Under limited site and conditions, such as when three-dimensional measurement and scanning technology is not available, it can accurately measure YBC parameters. It can reduce the difficulty and workload of bending manufacturing, measurement and feedback, and revision procedures, reduce repeated sampling work caused by subjective judgment, greatly accelerate the optimization of the guide tube and the speed of production, and help ensure production progress. It has the characteristics of simple operation, easy implementation, low cost, convenient and fast use, and accurate measurement.

[0020] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings. Attached Figure Description

[0021] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0022] Figure 1 This is a schematic diagram of the arc block positioning precision measuring ruler provided in Embodiment 1 of the present invention;

[0023] Figure 2a This is a schematic diagram of the structure of the second ruler in the arc-block positioning precision measuring ruler provided in Embodiment 1 of the present invention;

[0024] Figure 2b This is a schematic diagram of the assembly of the first ruler and the second ruler in the arc block positioning precision measuring ruler provided in Embodiment 1 of the present invention;

[0025] Figure 3a This is a schematic diagram of the guide block in the arc-block positioning precision measuring ruler provided in Embodiment 1 of the present invention;

[0026] Figure 3b This is a schematic diagram of the guide block structure in another direction of the arc block positioning precision measuring ruler provided in Embodiment 1 of the present invention;

[0027] Figure 4 This is a schematic diagram of the slider in the arc-block positioning precision measuring ruler provided in Embodiment 1 of the present invention;

[0028] Figure 5 This is a partial schematic diagram of the arc block positioning precision measuring ruler provided in Embodiment 1 of the present invention;

[0029] Figure 6 This is a schematic diagram of the actual measured length position in the arc block positioning precision measuring ruler provided in Embodiment 1 of the present invention;

[0030] Figure 7 This is a schematic diagram of the actual parameter Y length position in the arc block positioning precision measuring ruler provided in Embodiment 1 of the present invention.

[0031] Figure label:

[0032] 1-First ruler; 2-Second ruler; 3-Third ruler; 4-Fourth ruler; 5-Bent guide tube; 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 component; 14-First fixing screw; 15-Slider screw. Detailed Implementation

[0033] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of the present invention and, together with the embodiments of the present invention, serve to illustrate the principles of the present invention.

[0034] Example 1

[0035] This embodiment provides an arc-block positioning type precision measuring ruler, see [link / reference] Figure 1 and Figure 5 The YBC parameter of the curved conduit 5 is used to measure the curved conduit 5. The curved conduit 5 includes a first straight pipe section, a first curved pipe section, a second straight pipe section, a second curved pipe section and a third straight pipe section connected in sequence. The arc block positioning precision measuring ruler includes a first ruler 1, a second ruler 2, a third ruler 3, a fourth ruler 4 and an arc block positioning component.

[0036] The first ruler 1 and the second ruler 2 are rotatably connected and their relative positions can be fixed. The first ruler 1 is set along the axial direction of the first straight pipe section and its side is in contact with the first straight pipe section. The second ruler 2 is set along the axial direction of the second straight pipe section and its side 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.

[0037] The third ruler 3 and the fourth ruler 4 are rotatably connected and their relative positions can be fixed. The third ruler 3 is set along the axial direction of the second straight pipe section and its side is in contact with the side of the second straight pipe section. The fourth ruler 4 is set along the axial direction of the third straight pipe section and its side is in contact with the side 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) of the second and third straight pipe sections can be obtained.

[0038] The arc-shaped positioning component includes a guide block 6 and a slider 7. The guide block 6 is the main adapter block in the master-slave adapter block, and the slider 7 is the slave adapter block. The guide block 6 and slider 7 are arranged along the axial direction of the second straight pipe section. 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. 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. Arc-shaped support grooves are formed on both 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. The second straight pipe section is aligned with the inner wall of the arc-shaped support groove. Matching, 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. There are interlocking arc-shaped guide grooves and arc-shaped protrusions between the guide block 6 and the slider 7. The arc-shaped protrusion is inserted into the arc-shaped guide groove to achieve a sliding connection between the guide block 6 and the slider 7 around the axis of the second straight pipe section. By measuring the angle between the guide block 6 and the slider 7, the included angle (i.e., parameter B) 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.

[0039] It should be noted that, for cases where the second straight pipe section is relatively long, there can be multiple arc block positioning components, and the orientations of two adjacent arc block positioning components are opposite. That is, the orientations of two adjacent guide blocks 6 are opposite, and the orientations of two adjacent sliders 7 are opposite.

[0040] The measurement method includes the following steps:

[0041] Provide a curved conduit 5;

[0042] Preliminary positioning is performed on 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.

[0043] Adjust the fitting gaps 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 is located in the same plane, the second ruler 2 is arranged along the axial direction of the second straight pipe section and is located in the same plane, the third ruler 3 is arranged along the axial direction of the second straight pipe section and is located in the same plane, and the fourth ruler 4 is arranged along the axial direction of the third straight pipe section and is located in the same plane.

[0044] Measuring the angle between the first ruler 1 and the second ruler 2 yields the bending angle between the first and second straight pipe segments (parameter C1); measuring the angle between the third ruler 3 and the fourth ruler 4 yields the bending angle between the second and third straight pipe segments (parameter C2); measuring the angle between the guide block 6 and the slider 7 yields 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 (parameter B); measuring the perpendicular distance L1 between the end of the first straight pipe segment furthest from the first bend and the intersection point of the first ruler 1 and the second ruler 2, calculates the length Y1 of the first straight pipe segment; measuring the perpendicular distance L2 between the intersection point of the first ruler 1 and the second ruler 2 and the intersection point of the third ruler 3 and the fourth ruler 4, calculates the length Y2 of the second straight pipe segment; measuring the perpendicular distance L3 between the intersection point of the third ruler 3 and the fourth ruler 4 and the end of the third straight pipe segment furthest from the second bend, calculates the length Y3 of the third straight pipe segment. (See also...) Figures 6 to 7 .

[0045] 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 vernier dimension lines.

[0046] Compared with the prior art, the arc block positioning precision measuring ruler of this embodiment has a dual function. On the one hand, the surface of the guide block 6 facing the second straight pipe section (i.e., the plane of the guide block 6) is parallel to the plane formed by the first ruler 1 and the second ruler 2, and the surface of the slider 7 facing the second straight pipe section (i.e., the plane of the slider 7) 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 included angle (i.e., parameter B) 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. On the other hand, arc-shaped support grooves are opened on 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. The second straight pipe section matches the inner wall of the arc-shaped support groove, and the second straight pipe section is placed in the arc-shaped support groove, thereby achieving stable support for the second straight pipe section.

[0047] Meanwhile, the aforementioned arc-block positioning precision measuring ruler can replace the existing bending manufacturing inspection fixture. In situations where space and conditions are limited, such as when three-dimensional measurement and scanning technology is not available, it can accurately measure YBC parameters. This reduces the difficulty and workload of bending manufacturing, measurement, feedback, and revision procedures, reduces repeated sampling work caused by subjective judgment, and greatly accelerates the optimization of conduit routing and production speed. It helps ensure production progress and has the characteristics of simple operation, easy implementation, low cost, convenient and fast use, and accurate measurement.

[0048] Specifically, the structures of the first ruler 1, the second ruler 2, the third ruler 3, and the fourth ruler 4 mentioned above are basically the same, see [link to relevant documentation]. Figures 2a to 2b The system includes a ruler body with blind holes and through holes 12 at the bottom of the blind holes, thus forming a stepped inner wall on the ruler body. The two ends of the ruler body are semicircular with a radius of half the width of the ruler body. The shapes of the two ends of the blind holes and the two ends of the through holes 12 can be either semicircular or square.

[0049] In order to achieve the connection between the first ruler 1 and the second ruler 2, the above-mentioned arc block positioning precision 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. 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 of the first ruler 1 and the second ruler 2 is stable after the first fixing screw is tightened and will not be easily deformed.

[0050] In order to achieve the positioning between the third ruler 3 and the fourth ruler 4, the aforementioned arc block positioning precision measuring ruler also includes a second fixing member and a second fixing screw and a second fixing nut that cooperate with each other. The second fixing screw passes through the second fixing member, the third ruler 3 and the fourth ruler 4 and is detachably fixed to the second fixing nut. In order to reduce the shaking between the third ruler 3 and the fourth ruler 4, the second fixing member is located in the blind hole of the third ruler 3 and / or the second fixing member is located in the blind hole of the fourth ruler 4. The second fixing member cooperates with the blind hole of the third ruler 3 and / or the blind hole of the fourth ruler 4.

[0051] It should be noted that there is one first fastener 13, which can be located in one of the blind holes of the first ruler 1 and the blind holes 11 of the second ruler 2, or there can be two first fasteners 13, one of which is located in the blind hole of the first ruler 1 and the other in the blind hole 11 of the second ruler 2.

[0052] Similarly, the second fastener is one, which can be located in one of the blind holes of the third ruler 3 and the fourth ruler 4, or the number of the second fastener is two, one in the blind hole of the third ruler 3 and the other in the blind hole of the fourth ruler 4.

[0053] For example, the cross-sectional shape of the guide block 6 and the slider 7 along the radial direction of the second straight pipe section is semi-circular, and correspondingly, both the guide block 6 and the slider 7 have a flat surface and an arc surface.

[0054] For the structure of guide block 6, see [link to documentation]. Figures 3a to 3bIt includes a guide block 61, a connecting arc plate 62, and a guide arc plate 63. The guide block 61 is semi-cylindrical in shape, and the arc-shaped support surface is opened on the plane of the guide block 61 along the axial direction of the second straight pipe section. The connecting arc plate 62 and the guide arc plate 63 are located on the arc edge of the guide block 61, and the connecting arc plate 62, the guide arc plate 63, and the guide block 61 are concentrically arranged. The guide arc plate 63 is fixedly connected to the guide block 61 through the connecting arc plate 62, and the guide arc plate 63 protrudes from the connecting arc plate 62 towards the center of the guide block 61, thereby forming an arc-shaped guide groove between the guide block 61, the connecting arc plate 62, and the guide arc plate 63.

[0055] For details regarding the structure of slider 7, please refer to [link / reference]. Figure 4 It includes a slider body, which is semi-cylindrical in shape. An arc-shaped support surface is opened on the plane of the slider body along the axial direction of the second straight pipe section, and an arc-shaped protrusion is provided on the arc edge of the slider body.

[0056] To achieve a fixed connection between the guide block 61 and the third ruler 3, the aforementioned arc-block positioning precision measuring ruler further includes a guide block fixing block 8. A guide block screw 9 passes through the guide block fixing block 8 and the third ruler 3, and is detachably fixed to the guide block 6 mounting hole on the guide block 61. For example, the edge of the guide block fixing block 8 is 0.2–0.9 mm smaller than the distance between the arc-shaped guide groove and the axis of the second straight pipe section. Furthermore, the width of the guide block fixing block 8 is equal to the width of the blind hole on the third ruler 3.

[0057] Similarly, in order to achieve a fixed connection between the slider body and the second ruler 2, the above-mentioned arc block positioning precision 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.

[0058] The above description is only a preferred 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 conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A precision measuring ruler with arc block positioning, characterized in that, The arc-block positioning precision measuring ruler, used for measuring the YBC parameters of curved conduits, includes a first ruler, a second ruler, a third ruler, a fourth ruler, and an arc-block positioning component. The first ruler and the second ruler are rotatably connected and their relative positions can be fixed. The first ruler is set along the axial direction of the first straight pipe segment, and the second ruler is set along the axial direction of the second straight pipe segment. The bending angle between the first straight pipe segment and the second straight pipe segment, i.e., parameter C1, is obtained by measuring the angle between the first ruler and the second ruler. The third ruler and the fourth ruler are rotatably connected and their relative positions can be fixed. The third ruler is set along the axial direction of the second straight pipe section, and the fourth ruler is set along the axial direction of the third straight pipe section. The bending angle between the second straight pipe section and the third straight pipe section, i.e., parameter C2, is obtained by measuring the angle between the third ruler and the fourth ruler. Measure the vertical distance L1 between the end of the first straight pipe segment furthest from the first bend and the intersection of the first straight ruler and the second straight ruler, and calculate the length Y1 of the first straight pipe segment. Measure the vertical distance L2 between the intersection of the first straight ruler and the second straight ruler and the intersection of the third straight ruler and the fourth straight ruler, and calculate the length Y2 of the second straight pipe segment. Measure the vertical distance L3 between the intersection of the third straight ruler and the fourth straight ruler and the end of the third straight pipe segment furthest from the second bend, and calculate the length Y3 of the third straight pipe segment. The arc block positioning component includes a guide block and a slider, which are arranged along the axial direction of the second straight pipe section. The surface of the slider facing the second straight pipe section is parallel to the plane formed by the first and second rulers, and the surface of the guide block facing the second straight pipe section is parallel to the plane formed by the third and fourth rulers. There are multiple arc block positioning components, and the orientations of adjacent arc block positioning components are opposite, i.e., the orientations of adjacent guide blocks and adjacent sliders are opposite. Arcs are formed on the surfaces of the guide blocks and sliders facing the second straight pipe section. The second straight pipe section is fitted into the inner wall of the arc-shaped support groove. The second straight pipe section is placed in the arc-shaped support groove. There are interlocking arc-shaped guide grooves and arc-shaped protrusions between the guide block and the slider. The arc-shaped protrusions are inserted into the arc-shaped guide grooves to achieve a sliding connection between the guide block and the slider around the axis of the second straight pipe section. The surface of the guide block facing the slider is provided with scale lines or angle vernier dimension lines. By measuring the angle between the guide block and the slider, the included angle between the plane formed by the first and second rulers and the plane formed by the third and fourth rulers is obtained, i.e., parameter B.

2. The arc-block positioning precision measuring ruler according to claim 1, characterized in that, The first ruler, the second ruler, the third ruler, and the fourth ruler all include a ruler body, on which a blind hole is formed, and a through hole is formed at the bottom of the blind hole.

3. The arc-block positioning precision measuring ruler according to claim 2, characterized in that, The guide block is semi-cylindrical in shape.

4. The arc-block positioning precision measuring ruler according to claim 3, characterized in that, The guide block includes a guide block body, a connecting arc plate, and a guide arc plate; the connecting arc plate and the guide arc plate are located on the arc edge of the guide block body, and the guide arc plate is fixedly connected to the guide block body through the connecting arc plate. The guide arc plate protrudes from the connecting arc plate toward the center of the guide block body, forming an arc-shaped guide groove between the guide block body, the connecting arc plate, and the guide arc plate.

5. The arc-block positioning precision measuring ruler according to claim 4, characterized in that, The connecting arc plate, guide arc plate, and guide block are arranged concentrically.

6. The arc-block positioning precision measuring ruler according to claim 4, characterized in that, It also includes a guide block fixing block, and the guide block screw passes through the guide block fixing block and the third ruler and is detachably and fixedly connected to the guide block mounting hole on the guide block body.

7. The arc-block positioning precision measuring ruler according to claim 6, characterized in that, The edge of the guide block fixing block is 0.2~0.9mm smaller than the distance between the arc-shaped guide groove and the axis of the second straight pipe section.

8. The arc-block positioning precision measuring ruler according to claim 6, characterized in that, The width of the guide block fixing block is equal to the width of the blind hole on the third ruler.

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