CN112833733B - Round hole circle center positioning device and positioning method - Google Patents
Round hole circle center positioning device and positioning method Download PDFInfo
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- CN112833733B CN112833733B CN202110089766.1A CN202110089766A CN112833733B CN 112833733 B CN112833733 B CN 112833733B CN 202110089766 A CN202110089766 A CN 202110089766A CN 112833733 B CN112833733 B CN 112833733B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
Abstract
The circular hole circle center positioning device comprises a substrate, wherein a driving disc is arranged on the substrate, a center column is arranged on the driving disc in a penetrating manner, one end of the center column is provided with a laser emitting device, and the other end of the center column is provided with a center; the base plate and the driving disc are disc-shaped structures, and the circle centers of the base plate and the driving disc are on the central column; at least three positioning claws are arranged on one surface of the base plate, a first tooth is arranged at one end of each positioning claw, a second tooth is arranged on the outer wall of the driving disc, and the first tooth is meshed with the second tooth. The invention adopts the structure, can realize the quick alignment of the circle center of the round hole or the cylinder, and is suitable for round holes or cylinders with different sizes.
Description
Technical Field
The invention relates to the field of measuring instruments, in particular to a round hole circle center positioning device and a positioning method.
Background
In the daily part measuring process, the workpiece with the round hole or the cylinder has larger error in determining the whole size or the related size.
The prior art means mainly comprises the following two methods: firstly, rubbing the outline of a workpiece on white paper in a rubbing mode, and determining the size relationship of the outline of the workpiece according to the principles of ruler-gauge drawing and triangle circumscribing; and secondly, when the hole distance is determined, measuring the distance from the hole edge to the known position through a caliper or a ruler, and adding the radius of the hole on the basis of the distance to obtain the hole distance.
When a workpiece with a plurality of round holes or a plurality of cylinders is measured, when the end surfaces of the workpiece are not on the same plane, the measurement accuracy of the workpiece can be greatly reduced by the two methods. If the end surfaces are on the same plane, the size of the pen point and other factors can reduce the precision when rubbing is adopted; when using a method of measuring and calculating the distance from the hole edge to the known edge + the radius of the circular hole, the abrasion of the circular hole and other factors will also reduce the accuracy.
When the measured workpiece is too large, the rubbing and the distance from the hole edge to the known edge and the radius of the round hole cannot be accurately measured and calculated.
Disclosure of Invention
The invention aims to solve the technical problem of providing the round hole circle center positioning device which can realize quick circle center alignment of round holes or cylinders and is suitable for round holes or cylinders with different sizes.
In order to solve the technical problems, the invention adopts the following technical scheme: the circular hole circle center positioning device comprises a substrate, wherein a driving disc is arranged on the substrate, a center column is arranged on the driving disc in a penetrating manner, one end of the center column is provided with a laser emitting device, and the other end of the center column is provided with a center;
the base plate and the driving disc are disc-shaped structures, and the circle centers of the base plate and the driving disc are arranged on the central column;
at least three positioning claws are arranged on one surface of the base plate, a first tooth is arranged at one end of each positioning claw, a second tooth is arranged on the outer wall of the driving disc, and the first tooth is meshed with the second tooth.
In the preferred scheme, one surface of the substrate is provided with at least three mounting columns, the plurality of mounting columns are uniformly arranged at equal included angles, and the distances between the plurality of mounting columns and the center of the substrate are equal;
the positioning claw is arranged on the mounting column.
In the preferred scheme, a through hole is formed in the center of the substrate, and a center column penetrates through the circle center of the driving disc and the circle center of the through hole.
In the preferred scheme, a telescopic joint is arranged on a center column positioned at one side of the base plate, and a center is arranged on the telescopic joint.
In a preferred scheme, the positioning claw is of a special structure consisting of a circular part and a triangular part, and the first teeth are arranged on the side wall of the circular part.
The round hole center positioning method based on the round hole center positioning device comprises the following steps:
1) Placing the device in a workpiece round hole to be detected;
2) Manually toggle and rotate one of the positioning claws to enable the positioning claw to rotate around the mounting column;
3) The driving disc rotates along with one manually-shifted positioning claw and drives the rest positioning claws to rotate at the same angular speed with the manually-shifted positioning claws;
4) The positioning of the device is completed when the end parts of the positioning claws contact the inner wall of the round hole of the workpiece;
5) And determining the circle center position of the round hole of the workpiece through the center or the laser emission device.
In the preferred scheme, in the step 4), when the end part of the positioning claw contacts the inner wall of the round hole of the workpiece, the positioning claw is further manually shifted, so that interference fit is formed between the device and the round hole of the workpiece.
In the preferred scheme, in the step 5), the telescopic joint is adjusted to enable the center to extend, and the contact point between the center and other workpieces is a projection point of the circle center of the circular hole of the workpiece on the other workpieces.
In the preferred scheme, in the step 5), the laser emitting device is turned on, and the irradiation point of the laser emitting device on other workpieces is a projection point of the circle center of the circular hole of the workpiece on the other workpieces.
The round hole circle center positioning device and the round hole circle center positioning method provided by the invention have the following beneficial effects by adopting the structure and the method:
(1) The problem of low measurement and calculation precision in the prior art is solved, and the effects of improving the detection operation efficiency and reducing the detection operation error are achieved;
(2) The device can be fixed in the round hole or the cylinder by using at least three positioning claws capable of synchronously rotating for adaptive adjustment, and is suitable for locating the circle centers of workpieces with different round holes or cylinder sizes;
(3) The determined center position can be displayed through a center or laser mode.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
fig. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a schematic diagram of an explosive structure according to the present invention.
In the figure: the device comprises a base plate 1, a mounting column 101, a through hole 102, a positioning claw 2, a first tooth 201, a driving disc 3, a second tooth 301, a central column 4, a laser emitting device 5, an expansion joint 6 and a center 7.
Detailed Description
Example 1:
1-2, a round hole center positioning device comprises a base plate 1, wherein a driving disc 3 is arranged on the base plate 1, a center column 4 is arranged on the driving disc 3 in a penetrating manner, a laser emitting device 5 is arranged at one end of the center column 4, and a center 7 is arranged at the other end of the center column;
the base plate 1 and the driving disc 3 are disc-shaped structures, and the circle centers of the base plate 1 and the driving disc 3 are arranged on the central column 4;
at least three positioning claws 2 are arranged on one surface of the base plate 1, a first tooth 201 is arranged at one end of each positioning claw 2, a second tooth 301 is arranged on the outer wall of the driving disc 3, and the first tooth 201 is meshed with the second tooth 301.
In a preferred scheme, one surface of the substrate 1 is provided with at least three mounting columns 101, the plurality of mounting columns 101 are uniformly arranged at equal included angles, and the distances between the plurality of mounting columns 101 and the circle center of the substrate 1 are equal;
the positioning claw 2 is mounted on the mounting column 101.
In a preferred scheme, a through hole 102 is arranged at the center of the base plate 1, and the center column 4 passes through the center of the driving disc 3 and the center of the through hole 102.
In a preferred scheme, the central column 4 positioned at one side of the base plate 1 is provided with an expansion joint 6, and the center 7 is arranged on the expansion joint 6.
In a preferred embodiment, the positioning pawl 2 is a special-shaped structure comprising a circular portion and a triangular portion, and the first tooth 201 is disposed on a side wall of the circular portion.
In the embodiment, the synchronous rotation of the rest positioning claws 2 is realized through the single positioning claw 2, and the rotation angles of all the positioning claws 2 are the same, so that the circle center of the device and the circle center of a round hole on a workpiece are always in the same vertical position, and the circle center positioning accuracy is ensured.
Example 2:
in the case of adopting the structure described in embodiment 1, the positioning method of the circle center of the round hole includes the following steps:
1) Placing the device in a workpiece round hole to be detected;
2) Manually toggle and rotate one of the positioning claws 2 to rotate about the mounting post 101;
3) The driving disc 3 rotates along with one positioning claw 2 which is manually shifted and drives the rest positioning claws 2 to rotate at the same angular speed as the positioning claw 2 which is manually shifted;
4) The positioning of the device is completed when the end part of the positioning claw 2 contacts the inner wall of the round hole of the workpiece;
5) The center position of the round hole of the workpiece is determined by the center 7 or the laser emitting device 5.
In the preferred scheme, in the step 4), when the end part of the positioning claw 2 contacts the inner wall of the workpiece round hole, the positioning claw 2 is further manually shifted, so that interference fit is formed between the device and the workpiece round hole.
In the preferred scheme, in the step 5), the telescopic joint 6 is adjusted to enable the center 7 to extend, and the contact point between the center 7 and other workpieces is a projection point of the circle center of the circular hole of the workpiece on the other workpieces.
In a preferred embodiment, in the step 5), the laser emitting device 5 is turned on, and the irradiation point of the laser emitting device 5 on other workpieces is a projection point of the circle center of the circular hole of the workpiece on the other workpieces.
In this example, the laser emission device 5 or the expansion joint 6 can be designed into a detachable structure and arranged on the same side of the device, so that the circle center of the cylindrical groove is positioned, and the device is directly installed at the bottom of the groove.
Claims (7)
1. A positioning method based on a circular hole circle center positioning device is characterized by comprising the following steps of: the device comprises a substrate (1), wherein a driving disc (3) is arranged on the substrate (1), a center column (4) is arranged on the driving disc (3) in a penetrating manner, a laser emitting device (5) is arranged at one end of the center column (4), and a center (7) is arranged at the other end of the center column;
the base plate (1) and the driving disc (3) are disc-shaped structures, and the circle centers of the base plate (1) and the driving disc (3) are arranged on the central column (4);
at least three positioning claws (2) are arranged on one surface of the base plate (1), a first tooth (201) is arranged at one end of each positioning claw (2), a second tooth (301) is arranged on the outer wall of the driving disc (3), and the first tooth (201) is meshed with the second tooth (301);
the positioning method based on the circular hole circle center positioning device comprises the following steps:
1) Placing the device in a workpiece round hole to be detected;
2) Manually toggle and rotate one of the positioning claws (2) to enable the positioning claw to rotate around the mounting column (101);
3) The driving disc (3) rotates along with one positioning claw (2) which is manually stirred and drives the rest positioning claws (2) to rotate at the same angular speed with the positioning claw (2) which is manually stirred;
4) The positioning of the device is completed when the end part of the positioning claw (2) contacts the inner wall of the round hole of the workpiece;
5) Determining the center position of a round hole of the workpiece through a center (7) or a laser emission device (5);
in the step 4), when the end part of the positioning claw (2) contacts the inner wall of the workpiece round hole, the positioning claw (2) is continuously manually shifted, so that interference fit is formed between the device and the workpiece round hole.
2. The positioning method based on the circular hole center positioning device according to claim 1, wherein the positioning method comprises the following steps: at least three mounting columns (101) are arranged on one surface of the substrate (1), the plurality of mounting columns (101) are uniformly arranged at equal included angles, and the distances between the plurality of mounting columns (101) and the circle center of the substrate (1) are equal;
the positioning claw (2) is arranged on the mounting column (101).
3. The positioning method based on the circular hole center positioning device according to claim 1, wherein the positioning method comprises the following steps: the center of the base plate (1) is provided with a through hole (102), and the center column (4) passes through the center of the driving disc (3) and the center of the through hole (102).
4. The positioning method based on the circular hole center positioning device according to claim 1, wherein the positioning method comprises the following steps: the center column (4) positioned at one side of the base plate (1) is provided with an expansion joint (6), and the center (7) is arranged on the expansion joint (6).
5. The positioning method based on the circular hole center positioning device according to claim 1, wherein the positioning method comprises the following steps: the positioning claw (2) is of a special structure consisting of a circular part and a triangular part, and the first teeth (201) are arranged on the side wall of the circular part.
6. The positioning method based on the circular hole center positioning device according to claim 1, wherein the positioning method comprises the following steps: in the step 5), the center (7) is extended by adjusting the telescopic joint (6), and the contact point between the center (7) and other workpieces is a projection point of the circle center of the circular hole of the workpiece on the other workpieces.
7. The positioning method based on the circular hole center positioning device according to claim 1, wherein the positioning method comprises the following steps: in the step 5), the laser emitting device (5) is turned on, and the irradiation point of the laser emitting device (5) on other workpieces is a projection point of the circle center of the circular hole of the workpiece on the other workpieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110089766.1A CN112833733B (en) | 2021-01-22 | 2021-01-22 | Round hole circle center positioning device and positioning method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110089766.1A CN112833733B (en) | 2021-01-22 | 2021-01-22 | Round hole circle center positioning device and positioning method |
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| Publication Number | Publication Date |
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| CN112833733A CN112833733A (en) | 2021-05-25 |
| CN112833733B true CN112833733B (en) | 2023-07-11 |
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| CN202110089766.1A Active CN112833733B (en) | 2021-01-22 | 2021-01-22 | Round hole circle center positioning device and positioning method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113483620B (en) * | 2021-09-08 | 2024-04-12 | 武汉锐科光纤激光技术股份有限公司 | Circle center positioning device and positioning method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4391217B2 (en) * | 2003-12-16 | 2009-12-24 | 株式会社トプコン | Surface inspection device |
| CN201573201U (en) * | 2009-12-30 | 2010-09-08 | 广州文冲船厂有限责任公司 | Shaft hole scribing device |
| CN203197642U (en) * | 2013-04-26 | 2013-09-18 | 中国船舶重工集团公司第七一七研究所 | Rapid centering device for ring-shaped parts |
| JP2016083729A (en) * | 2014-10-27 | 2016-05-19 | オークマ株式会社 | Geometric error identification system, and geometric error identification method |
| CN204799958U (en) * | 2015-07-09 | 2015-11-25 | 南方风机股份有限公司 | Multipurpose drive is top |
| CN205630371U (en) * | 2015-12-07 | 2016-10-12 | 南京斯创泰克机电科技有限公司 | Gear measurement frock clamp for appearance |
| CN107984249B (en) * | 2017-10-30 | 2021-04-13 | 江阴市恒润环锻有限公司 | Double-sided finish turning clamp of large thin-wall flange and flange machining process |
| CN214149047U (en) * | 2021-01-22 | 2021-09-07 | 湖北兴发化工集团股份有限公司 | Round hole centre of a circle positioner |
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