CN112833733A - Circular hole circle center positioning device and positioning method - Google Patents
Circular hole circle center positioning device and positioning method Download PDFInfo
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- CN112833733A CN112833733A CN202110089766.1A CN202110089766A CN112833733A CN 112833733 A CN112833733 A CN 112833733A CN 202110089766 A CN202110089766 A CN 202110089766A CN 112833733 A CN112833733 A CN 112833733A
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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
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Abstract
A circular hole circle center positioning device comprises a substrate, wherein a driving disc is arranged on the substrate, a central column penetrates through the driving disc, a laser emitting device is arranged at one end of the central column, and a tip is arranged at the other end of the central column; the base plate and the driving disk are both disc-shaped structures, and the centers of circles of the base plate and the driving disk are both arranged on the central column; at least three positioning claws are arranged on one surface of the substrate, first teeth are arranged at one end of each positioning claw, second teeth are arranged on the outer wall of the driving disc, and the first teeth are meshed with the second teeth. By adopting the structure, the center of the circular hole or the cylinder can be quickly aligned, and the circular hole or the cylinder is suitable for circular holes or cylinders with different sizes.
Description
Technical Field
The invention relates to the field of measuring instruments, in particular to a circular hole circle center positioning device and a circular hole circle center positioning method.
Background
During the measurement work of daily parts, a workpiece with a round hole or a cylinder has a large error in determining the overall size or the related size of the workpiece.
The prior art mainly comprises the following two methods: firstly, rubbing the outline of a workpiece onto white paper in a rubbing mode, drawing by a ruler and determining the size relation of the workpiece according to the principle of a triangle circumscribed circle; secondly, when the pitch-row is determined, the distance from the hole edge to the known position is measured through a caliper or a ruler, and the radius of the hole is added on the basis, so that the pitch-row is obtained.
When a workpiece distributed 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 precision can be greatly reduced by the former two methods. If the end faces of the pen point are on the same plane, when rubbing is adopted, the accuracy is reduced due to the size of the pen point and other factors; when the method of measuring and calculating the distance from the edge of the hole to the known edge + the radius of the circular hole is adopted, the abrasion of the circular hole and other factors will also cause the precision to be reduced.
When the measured workpiece is too large, the rubbing and the measuring and calculating method of the distance from the hole edge to the known edge and the radius of the round hole cannot be accurately developed.
Disclosure of Invention
The invention aims to solve the technical problem of providing a circular hole circle center positioning device which can realize quick alignment of the circle center of a circular hole or a cylinder and is suitable for circular holes or cylinders with different sizes.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a circular hole circle center positioning device comprises a substrate, wherein a driving disc is arranged on the substrate, a central column penetrates through the driving disc, a laser emitting device is arranged at one end of the central column, and a tip is arranged at the other end of the central column;
the base plate and the driving disc are both disc-shaped structures, and the centers of circles of the base plate and the driving disc are both arranged on the central column;
one side of the substrate is provided with at least three positioning claws, one end of each positioning claw is provided with a first tooth, the outer wall of the driving disc is provided with a second tooth, and the first tooth is meshed with the second tooth.
In the preferred scheme, at least three mounting columns are arranged on one surface of the substrate, a plurality of mounting columns are uniformly distributed 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 a preferred scheme, a through hole is formed in the center of the substrate, and the center column penetrates through the circle center of the driving disc and the circle center of the through hole.
In a preferred scheme, a telescopic joint is arranged on a central column positioned on one side of the base plate, and the tip is arranged on the telescopic joint.
In a preferred scheme, the positioning claw is of a special-shaped 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 circle center positioning method based on the round hole circle center positioning device comprises the following steps:
1) placing the device in a round hole of a workpiece to be detected;
2) manually poking and rotating one of the positioning claws to enable the positioning claw to rotate around the mounting column;
3) the driving disc rotates along with one positioning claw which is manually shifted and drives the rest positioning claws to rotate at the same angular speed as the manually shifted positioning claws;
4) the positioning of the device is completed when the end part of the positioning claw contacts the inner wall of the circular hole of the workpiece;
5) the center position of the circular hole of the workpiece is determined through the center or the laser emitting device.
In a preferable scheme, in the step 4), when the end part of the positioning claw contacts the inner wall of the workpiece round hole, the positioning claw is further manually shifted, so that the device and the workpiece round hole form interference fit.
In a preferable scheme, in the step 5), the centre is extended out by adjusting the telescopic joint, and a contact point between the centre and other workpieces is a projection point of the circle center of the circular hole of the workpiece on the other workpieces.
In a preferable scheme, in the step 5), the laser emitting device is turned on, and an irradiation point of the laser emitting device on the other workpiece is a projection point of the circle center of the circular hole of the workpiece on the other workpiece.
The round hole circle center positioning device and the 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 a round hole or a cylinder by carrying out adaptive adjustment by at least three positioning claws which can synchronously rotate, and is suitable for the center alignment positioning operation of workpieces with different round hole or cylinder sizes;
(3) the determined circle center position can be displayed in a tip mode or a laser mode.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic diagram of the explosive structure of the present invention.
In the figure: the laser emitting device comprises a substrate 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 an apex 7.
Detailed Description
Example 1:
as shown in fig. 1-2, a circular hole center positioning device comprises a substrate 1, wherein a driving disk 3 is arranged on the substrate 1, a central column 4 is arranged on the driving disk 3 in a penetrating manner, one end of the central column 4 is provided with a laser emitting device 5, and the other end of the central column is provided with a tip 7;
the base plate 1 and the driving disk 3 are both disc-shaped structures, and the centers of circles of the base plate 1 and the driving disk 3 are both on the central column 4;
wherein one side of the substrate 1 is provided with at least three positioning claws 2, one end of each positioning claw 2 is provided with a first tooth 201, the outer wall of the driving disk 3 is provided with a second tooth 301, and the first tooth 201 is meshed with the second tooth 301.
In a preferred scheme, at least three mounting columns 101 are arranged on one surface of the substrate 1, a 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.
In a preferred embodiment, a through hole 102 is formed in the center of the substrate 1, and the center post 4 passes through the center of the driving disc 3 and the center of the through hole 102.
In a preferable scheme, a telescopic joint 6 is arranged on the central column 4 positioned on one side of the base plate 1, and the tip 7 is arranged on the telescopic joint 6.
In a preferred embodiment, the positioning pawl 2 is a special-shaped structure composed of 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 a single positioning claw 2, the rotation angles of all the positioning claws 2 are the same, and the circle center of the device and the circle center of the circular hole on the workpiece can be effectively ensured to be always positioned at the same vertical position, so that the circle center positioning accuracy is ensured.
Example 2:
under the condition of adopting the structure of embodiment 1, the method for positioning the circle center of the circular hole comprises the following steps:
1) placing the device in a round hole of a workpiece to be detected;
2) manually rotating one of the positioning claws 2 to rotate around the mounting column 101;
3) the driving disc 3 rotates along with one positioning claw 2 which is manually dialed and drives the rest positioning claws 2 to rotate at the same angular speed as the positioning claw 2 which is manually dialed;
4) the positioning of the device is completed when the end part of the positioning claw 2 contacts the inner wall of the circular hole of the workpiece;
5) the center position of the circular hole of the workpiece is determined through the center 7 or the laser emitting device 5.
In a preferable 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 the device and the workpiece round hole form interference fit.
In a preferable scheme, in the step 5), the center 7 is extended by adjusting the telescopic joint 6, and a contact point of 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 an irradiation point of the laser emitting device 5 on another workpiece is a projection point of a circle center of a circular hole of the workpiece on the other workpiece.
In this embodiment, the laser emitting device 5 or the telescopic joint 6 can be designed to be detachable and arranged on the same side of the device, so that the circle center of the cylindrical groove can be positioned, and the device can be directly arranged at the bottom of the groove.
Claims (9)
1. The utility model provides a round hole centre of a circle positioner, includes base plate (1), its characterized in that: a driving disc (3) is arranged on the substrate (1), a central column (4) penetrates through the driving disc (3), a laser emitting device (5) is arranged at one end of the central column (4), and a tip (7) is arranged at the other end of the central column;
the base plate (1) and the driving disc (3) are disc-shaped structures, and the centers of circles of the base plate (1) and the driving disc (3) are both arranged on the central column (4);
base plate (1) wherein one side on be equipped with at least three positioning pawl (2), positioning pawl (2) serve and are equipped with first tooth (201), be equipped with second tooth (301) on driving-disc (3) outer wall, first tooth (201) and second tooth (301) meshing.
2. The device for positioning the center of a circular hole according to claim 1, wherein: at least three mounting columns (101) are arranged on one surface of the substrate (1), a plurality of mounting columns (101) are uniformly distributed at equal included angles, and the distances between the 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 device for positioning the center of a circular hole according to claim 1, wherein: the center of the base plate (1) is provided with a through hole (102), and the center column (4) penetrates through the circle center of the driving disc (3) and the circle center of the through hole (102).
4. The device for positioning the center of a circular hole according to claim 1, wherein: the center post (4) positioned on one side of the base plate (1) is provided with an expansion joint (6), and the tip (7) is arranged on the expansion joint (6).
5. The device for positioning the center of a circular hole according to claim 1, wherein: the positioning claw (2) is of a special-shaped structure consisting of a circular part and a triangular part, and the first tooth (201) is arranged on the side wall of the circular part.
6. The positioning method of the circular hole center positioning device according to any one of claims 1 to 5, characterized by comprising the following steps:
1) placing the device in a round hole of a workpiece to be detected;
2) manually poking and rotating one of the positioning claws (2) to rotate around the mounting column (101);
3) the driving disc (3) rotates along with one positioning claw (2) which is manually shifted and drives the rest positioning claws (2) and the positioning claws (2) which are manually shifted to rotate at the same angular speed;
4) the positioning of the device is completed when the end part of the positioning claw (2) contacts the inner wall of the circular hole of the workpiece;
5) the center position of the circular hole of the workpiece is determined through the center (7) or the laser emitting device (5).
7. The positioning method of the circular hole circle center positioning device according to claim 6, characterized in that: and in the step 4), when the end part of the positioning claw (2) contacts the inner wall of the circular hole of the workpiece, the positioning claw (2) is further manually shifted, so that the device and the circular hole of the workpiece form interference fit.
8. The positioning method of the circular hole circle center positioning device according to claim 6, characterized in that: in the step 5), the centre (7) extends out by adjusting the telescopic joint (6), and the contact point of the centre (7) and other workpieces is the projection point of the circle center of the circular hole of the workpiece on other workpieces.
9. The positioning method of the circular hole circle center positioning device according to claim 6, characterized in that: and in the step 5), the laser emitting device (5) is opened, and the irradiation points of the laser emitting device (5) on other workpieces are projection points of the circle centers of the circular holes of the workpieces on 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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| CN112833733A true CN112833733A (en) | 2021-05-25 |
| CN112833733B 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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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113483620A (en) * | 2021-09-08 | 2021-10-08 | 武汉锐科光纤激光技术股份有限公司 | Circle center positioning device and positioning method |
| CN115343067A (en) * | 2022-04-29 | 2022-11-15 | 东风汽车集团股份有限公司 | Wheel center auxiliary positioning measuring device and measuring method |
| CN116600854A (en) * | 2020-12-31 | 2023-08-15 | 西安大医集团股份有限公司 | Focus verification method, plan verification method, system, device and storage medium |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116600854A (en) * | 2020-12-31 | 2023-08-15 | 西安大医集团股份有限公司 | Focus verification method, plan verification method, system, device and storage medium |
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| CN115343067A (en) * | 2022-04-29 | 2022-11-15 | 东风汽车集团股份有限公司 | Wheel center auxiliary positioning measuring device and measuring method |
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| CN112833733B (en) | 2023-07-11 |
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