CN220472475U - Simple circle center determiner - Google Patents
Simple circle center determiner Download PDFInfo
- Publication number
- CN220472475U CN220472475U CN202321813016.5U CN202321813016U CN220472475U CN 220472475 U CN220472475 U CN 220472475U CN 202321813016 U CN202321813016 U CN 202321813016U CN 220472475 U CN220472475 U CN 220472475U
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- transverse plate
- long transverse
- circle center
- measuring
- round holes
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- 229920003023 plastic Polymers 0.000 claims description 5
- 238000005259 measurement Methods 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Abstract
The utility model discloses a simple circle center determiner, which consists of two measuring scales; the measuring ruler consists of an L-shaped plate (1) and two small cylinders (2) with the same diameter; the long transverse plate of the L-shaped plate (1) is a transparent rectangular flat plate, two round holes for installing the small cylinders (2) are formed in one end of the long transverse plate, and the central connecting line of the two round holes is perpendicular to the transverse central line of the long transverse plate; the upper surface of the long transverse plate is carved with a straight line (3) which is perpendicular to the central connecting line of the two round holes and passes through the midpoint of the central connecting line of the two round holes; the small cylinder (2) is vertically arranged on the lower surface of the long transverse plate. The utility model has simple structure and convenient use, has low requirements on the academic of operators, and can quickly measure and determine the circle center position of the round hole by common operators; when in measurement, the two measuring scales can determine the circle center of the round hole by only staggering a small angle, and the measuring scales can be used in occasions with smaller operation space.
Description
Technical Field
The utility model belongs to the technical field of auxiliary tools for measuring round holes, and particularly relates to a simple circle center determiner.
Background
Most of the existing mechanical parts are round holes in installation and positioning, so that the distance between the round holes is a critical dimension, the accuracy of the installation and positioning of the parts is related, the circle center of the holes needs to be found out firstly when the distance between the holes is measured, the 3 coordinate measuring points are adopted for measuring the distance between the holes, and then the circle center of the holes is fitted through calculation. For this reason, related researchers have also proposed some circle center measuring tools, for example, chinese patent No. 201120100275.4 discloses a circle center measuring device, which includes a first measuring rule, a second measuring rule, a reading rule and a pin; the first measuring ruler can be a ruler or a rod piece made of plastic, metal or other materials; the first measuring ruler is provided with a first string and a first vertical dividing groove which are mutually perpendicular, the first vertical dividing groove is divided into a first string, one end of the first string is marked with a letter A, the other end of the first string is provided with a pin hole, and the pin hole is marked with a letter B, so that the position of the first string AB can be quickly and accurately determined on an arc line when the circle center is measured; the second measuring ruler is the same as the first measuring ruler, two second string wires and a second vertical dividing groove which are perpendicular to each other are also arranged on the second measuring ruler, the second string wires are divided into the second vertical dividing groove, one end of each second string wire is marked with a letter C, the other end of each second string wire is provided with a pin hole, and the other end of each second string wire is marked with a letter B at the pin hole, so that the position of each second string wire BC can be rapidly and accurately determined on an arc line when the circle center is measured; the reading ruler can be a ruler made of plastic, metal or other materials, and is marked with length measurement units, such as centimeters, decimeters or other lengths of English; the scale positioned at 0 on the reading ruler, namely the initial reading position, is provided with a pin hole; the pin shaft penetrates through the pin hole, the pin hole and the pin hole, and the first measuring ruler, the second measuring ruler and the reading ruler can rotate around the pin shaft. As another example, chinese patent No. 201720105394.6 discloses a circle center measuring device, which comprises a tank body, a steel ruler and two positioning blocks with the same specification, wherein the tank body comprises two side panels and a top panel, the two side panels are vertically arranged at two sides of the top panel, the opening of the tank body is downward, the two positioning blocks are symmetrically arranged at two ends of one side panel, the steel ruler is vertically and fixedly arranged on the side panel provided with the positioning blocks, one side edge of the steel ruler for drawing is opposite to the center of the side panel, and the steel ruler is flush with the upper surface of the top panel; the top panel is provided with a quasi-rectangular hole penetrating through the top panel, and two ends of the quasi-rectangular hole are semicircular arcs, so that the screw rod is convenient to install; a rectangular hole is formed in one side face of the groove body, alignment scales with graduation values of 1mm are engraved on the upper side of the position of the rectangular hole, zero points of the alignment scales are arranged in the center, and readings are symmetrically arranged on two sides of the zero points of the alignment scales; the steel ruler is vertically and fixedly arranged on the side panel provided with the positioning block, one side edge of the steel ruler used for drawing lines is opposite to the center of the side panel, and the steel ruler is flush with the upper surface of the top panel. The steel ruler is provided with a measuring scale with an graduation value of 1mm, and a zero point of the measuring scale is arranged at one end close to the groove body.
Disclosure of Invention
The utility model aims to provide a simple circle center determiner which is used for solving the problem that a mechanical part cannot quickly and simply determine the circle center.
The technical scheme of the utility model is as follows:
a simple circle center determiner consists of two measuring scales; the measuring ruler consists of an L-shaped plate and two small cylinders with the same diameter; the long transverse plate of the L-shaped plate is a transparent rectangular flat plate, two round holes for installing small cylinders are formed in one end of the long transverse plate, and the central connecting line of the two round holes is perpendicular to the transverse central line of the long transverse plate; the upper surface of the long transverse plate is carved with a straight line which is perpendicular to the central connecting line of the two round holes and passes through the midpoint of the central connecting line of the two round holes; the small cylinder is vertically arranged on the lower surface of the long transverse plate.
The utility model further describes that the round hole is a threaded hole; and one end of the small cylinder is provided with external threads matched with the threaded holes.
The utility model further describes that the long transverse plate is made of transparent plastic plates.
The utility model further provides that the straight lines on the long transverse plates are colored, preferably black or red.
The application method of the utility model comprises the following steps:
the utility model can be composed of paired measuring scales with different lengths, and the measuring scales with different lengths can be selected according to the sizes of round holes with different diameters. When in use, two small cylinders of one measuring ruler are tightly attached to the edge of the measured round hole, and the other measuring ruler forms a certain angle (except 0 DEG and 180 DEG) with the first measuring ruler, and the two small cylinders are tightly attached to the edge of the measured round hole, so that the intersection point of straight lines passing through the two transparent measuring rulers is the circle center of the measured round hole.
Measurement principle: each measuring ruler can determine the perpendicular bisector of a circular hole chord, two measuring rulers are used for determining the perpendicular bisector of two different chords when measuring holes, and according to the geometric principle, the perpendicular bisector of the circular chord necessarily passes through the circle center, so that the intersection point of the perpendicular bisectors of the two different chords is the circle center, and the circle center of the circular hole can be determined simply, conveniently and quickly through the two measuring rulers, and the distance between the circular hole and the circular hole can be detected. When in measurement, the two measuring scales can determine the circle center of the round hole by only staggering a small angle, and the measuring scales can be used in the occasion with smaller operation space.
The utility model has the beneficial effects that:
the utility model has simple structure and convenient use, has low requirements on the academic of operators, and can quickly measure and determine the circle center position of the round hole by common operators; when in measurement, the two measuring scales can determine the circle center of the round hole by only staggering a small angle, and the measuring scales can be used in occasions with smaller operation space.
Drawings
Fig. 1 is a schematic structural view of a measuring scale according to an embodiment of the present utility model.
FIG. 2 is a schematic diagram illustrating the usage status of an embodiment of the present utility model.
Reference numerals: 1-L-shaped plate, 2-small cylinder and 3-straight line.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
Example 1:
a simple circle center determiner consists of two measuring scales. As shown in fig. 1, the measuring ruler consists of an L-shaped plate 1 and two small cylinders 2 with the same diameter; the long transverse plate of the L-shaped plate 1 is a transparent rectangular flat plate, two round holes for installing the small cylinders 2 are formed in one end of the long transverse plate, and the central connecting line of the two round holes is perpendicular to the transverse central line of the long transverse plate; the upper surface of the long transverse plate is carved with a straight line 3 which is perpendicular to the central connecting line of the two round holes and passes through the midpoint of the central connecting line of the two round holes; the small cylinder 2 is vertically arranged on the lower surface of the long transverse plate.
When the measuring ruler is used, as shown in fig. 2, two small cylinders of one measuring ruler are tightly attached to the edge of a measured round hole, the other measuring ruler is tightly attached to the edge of the measured round hole at a certain angle with the first measuring ruler, and the intersection point of straight lines passing through the two transparent measuring rulers is the circle center of the measured round hole.
Example 2:
a simple circle center determiner consists of two measuring scales. As shown in fig. 1, the measuring ruler consists of an L-shaped plate 1 and two small cylinders 2 with the same diameter; the long transverse plate of the L-shaped plate 1 is a transparent rectangular flat plate, two round holes for installing the small cylinders 2 are formed in one end of the long transverse plate, and the central connecting line of the two round holes is perpendicular to the transverse central line of the long transverse plate; the upper surface of the long transverse plate is carved with a straight line 3 which is perpendicular to the central connecting line of the two round holes and passes through the midpoint of the central connecting line of the two round holes; the small cylinder 2 is vertically arranged on the lower surface of the long transverse plate. The round hole is a threaded hole; and one end of the small cylinder 2 is provided with external threads matched with the threaded holes.
Example 3:
a simple circle center determiner consists of two measuring scales. As shown in fig. 1, the measuring ruler consists of an L-shaped plate 1 and two small cylinders 2 with the same diameter; the long transverse plate of the L-shaped plate 1 is a transparent rectangular plastic plate, two round holes for installing the small cylinders 2 are formed in one end of the long transverse plate, and the central connecting line of the two round holes is perpendicular to the transverse central line of the long transverse plate; the upper surface of the long transverse plate is carved with a straight line 3 which is perpendicular to the central connecting line of the two round holes and passes through the midpoint of the central connecting line of the two round holes; the small cylinder 2 is vertically arranged on the lower surface of the long transverse plate.
It is to be understood that the above-described embodiments are merely illustrative of the utility model and are not intended to limit the practice of the utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art; it is not necessary here nor is it exhaustive of all embodiments; and obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.
Claims (3)
1. A simple circle center determiner is characterized in that: consists of two measuring scales; the measuring ruler consists of an L-shaped plate (1) and two small cylinders (2) with the same diameter;
the long transverse plate of the L-shaped plate (1) is a transparent rectangular flat plate, two round holes for installing the small cylinders (2) are formed in one end of the long transverse plate, and the central connecting line of the two round holes is perpendicular to the transverse central line of the long transverse plate; the upper surface of the long transverse plate is carved with a straight line (3) which is perpendicular to the central connecting line of the two round holes and passes through the midpoint of the central connecting line of the two round holes;
the small cylinder (2) is vertically arranged on the lower surface of the long transverse plate.
2. The simple circle center determiner of claim 1, wherein: the round hole is a threaded hole; one end of the small cylinder (2) is provided with external threads matched with the threaded holes.
3. The simple circle center determiner of claim 1, wherein: the long transverse plate is made of a transparent plastic plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321813016.5U CN220472475U (en) | 2023-07-11 | 2023-07-11 | Simple circle center determiner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321813016.5U CN220472475U (en) | 2023-07-11 | 2023-07-11 | Simple circle center determiner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220472475U true CN220472475U (en) | 2024-02-09 |
Family
ID=89779262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321813016.5U Active CN220472475U (en) | 2023-07-11 | 2023-07-11 | Simple circle center determiner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220472475U (en) |
-
2023
- 2023-07-11 CN CN202321813016.5U patent/CN220472475U/en active Active
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