CN220982215U - Rotating shaft angle measuring mechanism - Google Patents
Rotating shaft angle measuring mechanism Download PDFInfo
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- CN220982215U CN220982215U CN202323173962.0U CN202323173962U CN220982215U CN 220982215 U CN220982215 U CN 220982215U CN 202323173962 U CN202323173962 U CN 202323173962U CN 220982215 U CN220982215 U CN 220982215U
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- 230000007246 mechanism Effects 0.000 title claims abstract description 25
- 238000005259 measurement Methods 0.000 claims abstract description 25
- 238000009434 installation Methods 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 3
- 230000004044 response Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 description 4
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a rotating shaft angle measuring mechanism, which relates to the technical field of measuring mechanisms for machine manufacturing and comprises a rotating shaft, a turntable, a locating pin, a fixing bolt, a fixing bracket and a laser range finder; the utility model has simple structure and stable measuring effect, is suitable for measuring the angles of almost all rotating shafts, and almost has no axial space limitation; except that blind spots are generated at the zero point and the end point of the turntable, the angle value in the current minimum range cannot be accurately measured, and other arbitrary angles can be obtained through the obtained laser range finder measured value, the change rule of the measured value, the characteristic curve of the spiral line and the reverse calculation; the device can replace manual measurement, has sensitive measurement response and can master the current rotation shaft angle in real time. If the current angle measurement value is fed back, the rotation control of the appointed angle of the rotating shaft can be realized, and meanwhile, the angle of the rotating shaft can be accurately controlled under the condition of remote or no view.
Description
Technical Field
The utility model relates to the technical field of measuring mechanisms for machine manufacturing, in particular to a rotating shaft angle measuring mechanism.
Background
In some traditional rotating shaft mechanical structures, the change of the rotating shaft angle needs to be accurately mastered in real time, and the rotating shaft is controlled to rotate by a designated angle or to rotate to a designated angle. However, in practical application, the rotation of many mechanical structures is driven by a motor, and the manual close-range measurement is easy to be dangerous, and some large-scale rotating shaft mechanisms are inconvenient to manually measure on site or directly control and drive to realize the operation, and some small-scale mechanisms are inconvenient to manually realize the operation due to narrow space. A simple and practical mechanism is needed to replace the manual measurement of the rotation shaft angle.
The utility model provides a pivot angle measuring device of application number CN201621145303.3, what provide is a device of measuring pivot rotation angle, but it needs artifical auxiliary measurement when detecting, and need fix measuring device through the mode of cartridge in detecting the pivot when measuring, can not guarantee that every is surveyed the pivot and all can connect, in addition when artifical auxiliary detection is at short-range the detection easily produce danger, and some large-scale pivot class mechanisms are inconvenient manual on-the-spot measurement, and some small-size mechanisms are because of the space is narrow and small, inconvenient manual implementation this operation.
Disclosure of utility model
The utility model aims to provide a rotating shaft angle measuring mechanism, which solves the problems that the manual short-distance detection in the prior art proposed in the background technology is easy to generate danger, some large rotating shaft mechanisms are inconvenient for manual field measurement, and some small mechanisms are inconvenient for manual implementation due to narrow space.
In order to achieve the above purpose, the present utility model provides the following technical solutions: a rotating shaft angle measuring mechanism comprises a rotating shaft, a rotating disc, a plurality of positioning pins, a plurality of fixing bolts, a fixing support and a laser range finder; the rotary table is sleeved outside the rotary shaft, and a plurality of positioning pins and a plurality of fixing bolts are uniformly arranged on the circumference coaxial with the rotary shaft on the rotary table; the laser range finder is arranged on the outer side of the rotary table through a fixed support which is static relative to the rotary shaft.
Further, the rotating shaft is provided with a rotating shaft fixing disc extending radially outwards below the rotating disc, the radius of the rotating shaft fixing disc is larger than the radius of the fixed circumferences of the positioning pins and the fixing bolts on the rotating disc, and meanwhile, the rotating shaft fixing disc is coaxially provided with positioning grooves and positioning bolt holes at positions corresponding to the positioning pins and the fixing bolts respectively.
Preferably, the turntable is provided with a positioning pin hole at the installation position of the positioning pin, a fixing bolt hole is arranged at the installation position of the fixing bolt, and a spiral line with gradually increased radius is arranged at the outer edge of the turntable by taking the axis of the rotating shaft as the center of a circle.
Preferably, the distance between the fixed support and the maximum radius point of the spiral line of the turntable is larger than the measurement blind area of the laser range finder.
Preferably, the laser emission point and the photosurface of the laser range finder correspond to the outer cutting surface of the spiral line of the turntable.
Preferably, the maximum radius point of the spiral line is connected with the axis of the rotating shaft, the connecting line is demarcated with the intersection of the rotating disc, the connecting line between the demarcation point and the maximum radius point of the spiral line is an effective measuring range, and the connecting line between the demarcation point and the axis of the rotating shaft is a zero point calibration distance.
Preferably, the rotating shaft and the turntable are connected into a whole by welding or a key groove.
Further, a magnet block is arranged at the bottom end of the rotating shaft.
Compared with the prior art, the utility model has the beneficial effects that:
The utility model has simple structure and stable measuring effect, is suitable for measuring the angles of almost all rotating shafts, has almost no axial space limitation, and theoretically, the thickness of the turntable only needs to meet the requirement that the turntable rotates for one circle after being fixed on the rotating shafts, and the light rays emitted by the laser range finder can irradiate the cutting surface of the spiral line and reflect back to the light sensing surface of the laser range finder; except that blind spots are generated at the zero point and the end point of the turntable, the angle value in the current minimum range cannot be accurately measured, and other arbitrary angles can be obtained through the obtained laser range finder measured value, the change rule of the measured value, the characteristic curve of the spiral line and the reverse calculation; the device can replace manual measurement, has sensitive measurement response and can master the current rotation shaft angle in real time. If the current angle measurement value is fed back, the rotation control of the appointed angle of the rotating shaft can be realized, and meanwhile, the angle of the rotating shaft can be accurately controlled under the condition of remote or no view.
Drawings
FIG. 1 is a top view of the present utility model;
FIG. 2 is an enlarged view of A in FIG. 1;
FIG. 3 is a top view of the spindle;
FIG. 4 is a top view of the turntable;
FIG. 5 is a front view of FIG. 1;
FIG. 6 is a schematic view of the present utility model mounted on a rotating shaft;
FIG. 7 is a cross-sectional view of B-B in FIG. 6;
in the figure: the device comprises a rotating shaft-1, a rotating shaft fixing disc-11, a positioning groove-12, a positioning bolt hole-13, a magnet block-14, a turntable-2, a positioning pin hole-21, a fixing bolt hole-22, a spiral line-23, a positioning pin-3, a fixing bolt-4, a fixing support-5, a laser range finder-6, an effective range-7 and a zero calibration distance-8.
Detailed Description
In order to make the technical solution of the present utility model better understood by those skilled in the art, the technical solution of the present utility model in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1-5, fig. 1 is a top view of the present utility model; FIG. 2 is an enlarged view of A in FIG. 1; FIG. 3 is a top view of the spindle; FIG. 4 is a top view of the turntable; FIG. 5 is a front view of FIG. 1; FIG. 6 is a schematic view of the present utility model mounted on a rotating shaft; fig. 7 is a cross-sectional view of B-B of fig. 6.
The utility model provides a rotating shaft angle measuring mechanism which can measure the rotating angle of a rotating shaft in real time; the rotary table comprises a rotary shaft 1, wherein a rotary table 2 is sleeved on the outer side of the rotary shaft 1, a plurality of positioning pins 3 and a plurality of fixing bolts 4 are uniformly arranged on the rotary table 2 on the circumference coaxial with the rotary shaft 1, and the rotary shaft 1 and the rotary table 2 are locked and fixed through the positioning pins 3 and the fixing bolts 4, so that the rotary shaft 1 and the rotary table 2 realize synchronous rotation; a laser distance measuring instrument 6 is arranged on the outer side of the rotary table 2 through a fixed support 5 which is relatively static to the rotary shaft 1.
The rotating shaft 1 is provided with a rotating shaft fixing disc 11 extending radially outwards below the rotating disc 2, the radius of the rotating shaft fixing disc 11 is larger than the radius of the fixing circumferences of the positioning pins 3 and the fixing bolts 4 on the rotating disc 2, and meanwhile, the rotating shaft fixing disc 11 is coaxially provided with a positioning groove 12 and a positioning bolt hole 13 at the corresponding positions of each positioning pin 3 and each fixing bolt 4, so that the rotating shaft 1 and the rotating disc 2 can be connected into a whole through the positioning pins 3 and the fixing bolts 4; the bottom of the rotating shaft 1 is also provided with a magnet block 14, and the rotating shaft 1 and the rotating shaft to be tested are coaxially fixed through the magnet block 14, so that the rotating angle of the rotating shaft to be tested can be accurately detected.
The rotary table 2 is provided with a positioning pin hole 21 at the mounting position of the positioning pin 3, a fixing bolt hole 22 at the mounting position of the fixing bolt 4, and a spiral line 23 with gradually increased radius is arranged on the outer edge of the rotary table 2 by taking the axis of the rotary shaft 1 as the center of a circle; during detection, the maximum radius point of the spiral line 23 is connected with the axis of the rotating shaft 1, the connecting line is demarcated with the intersection of the rotating disc 2, the connecting line between the demarcation point and the maximum radius point of the spiral line 23 is an effective measuring range 7, and the connecting line between the demarcation point and the axis of the rotating shaft 1 is a zero calibration distance 8.
The distance between the fixed support 5 and the maximum radius point of the spiral line 23 of the turntable 2 is larger than the measurement blind area of the laser range finder 6, and the laser emission point and the photosurface of the laser range finder 6 correspond to the outer cutting surface of the spiral line 23 of the turntable 2; when the rotating shaft 1 rotates to drive the rotating disc 2 to rotate, the distance between the rotating disc 2 and the corresponding point of the light emitted by the laser range finder 6 can be changed in a specific proportion, the laser range finder 6 can observe the distance and the change of the distance in real time, and the feedback angle and the change of the angle can be realized by reversely calculating the corresponding proportion.
The rotating shaft 1 and the rotating disc 2 can be connected into a whole by welding or a key slot mode, so that the rotating disc 2 and the rotating shaft 1 realize synchronous rotation.
When the laser range finder 6 is used, diffuse reflection is generated after the laser range finder 6 emits light and the spiral line 23 of the turntable 2 cuts the surface, partial diffuse reflection returns to the photosensitive surface of the laser range finder 6, and the distance between the current laser range finder 6 and the corresponding point of the current emitted light of the spiral line 23 of the turntable 2 is measured. When the rotating shaft 1 drives the rotating disc 2 to rotate, the distance between the laser distance meter 6 and the corresponding point of the light emitted by the spiral line 23 of the rotating disc 2 also changes correspondingly, and the change rule depends on the curve characteristic of the angular speed of the rotating shaft 1 and the spiral line 23. The current rotation angle of the rotating shaft can be obtained through the inverse calculation of the obtained distance value and the characteristic curve of the spiral line 23.
The curve characteristics of the spiral 23 in the present utility model are:
X(t)＝(a*((360-(t))/360)+b)*cos(t)
Y(t)＝(a*((360-(t))/360)+b)*sin(t)
t is a parameter (i.e., an angle value);
a is a constant and corresponds to an effective range value of the turntable 1;
b is a constant and mainly depends on the diameter of the rotating shaft 1;
the curve is transformed based on an archimedes spiral.
The precision of the rotating shaft angle measuring mechanism provided by the utility model depends on the measuring precision of the laser range finder 6, the magnitude of a constant a in a characteristic curve of the spiral line 23 and the precision and roughness of a cutting surface of the spiral line 23; the utility model has simple structure and stable measuring effect, is suitable for measuring the angles of almost all rotating shafts, has almost no axial space limitation, and theoretically, the thickness of the turntable 1 only needs to meet the requirement that the turntable 2 rotates for one circle after being fixed on the rotating shaft 1, and the light emitted by the laser range finder 6 can irradiate the cutting surface of the spiral line 23 and reflect back to the light sensing surface of the laser range finder; except that blind spots are generated at the zero point and the end point of the turntable 2, the angle value in the current minimum range cannot be accurately measured, and other arbitrary angles can be obtained through the obtained laser range finder measured value and the change rule of the measured value, the characteristic curve of the spiral line 23 and the reverse calculation; the device can replace manual measurement, has sensitive measurement response and can master the current rotation shaft angle in real time. If the current angle measurement value is fed back, the rotation control of the designated angle of the rotating shaft 1 can be realized, and meanwhile, the angle of the rotating shaft can be accurately controlled under the condition of remote or no view.
While embodiments of the utility model have been illustrated and described, it will be apparent that the embodiments described are merely some, but not all embodiments of the utility model. Based on the embodiments of the present utility model, it will be understood by those skilled in the art that all other embodiments which may be obtained from numerous changes, modifications, substitutions and alterations of these embodiments without departing from the spirit and principles of the present utility model are within the scope of the present utility model.
Claims (8)
1. The utility model provides a pivot angle measurement mechanism which characterized in that: the device comprises a rotating shaft (1), a rotating disc (2), a plurality of positioning pins (3), a plurality of fixing bolts (4), a fixing bracket (5) and a laser range finder (6); the rotary table (2) is sleeved outside the rotary shaft (1), and a plurality of positioning pins (3) and a plurality of fixing bolts (4) are uniformly arranged on the circumference coaxial with the rotary shaft (1) on the rotary table (2); a laser range finder (6) is arranged on the outer side of the rotary table (2) through a fixed support (5) which is static relative to the rotary shaft (1).
2. The spindle angle measurement mechanism of claim 1, wherein: the rotary shaft (1) is provided with a rotary shaft fixing disc (11) which radially extends outwards below the rotary disc (2), the radius of the rotary shaft fixing disc (11) is larger than the radius of the fixed circumferences of a plurality of locating pins (3) and a plurality of fixing bolts (4) on the rotary disc (2), and meanwhile, the rotary shaft fixing disc (11) is coaxially provided with locating grooves (12) and locating bolt holes (13) at corresponding positions of the locating pins (3) and the fixing bolts (4) respectively.
3. The spindle angle measurement mechanism of claim 2, wherein: the rotary table (2) is provided with a positioning pin hole (21) at the installation position of the positioning pin (3), a fixing bolt hole (22) is formed at the installation position of the fixing bolt (4), and the rotary table (2) takes the axis of the rotary shaft (1) as the center of a circle and is provided with a spiral line (23) with gradually increased radius at the outer edge of the rotary table (2).
4. A spindle angle measurement mechanism according to claim 3, wherein: the distance between the fixed support (5) and the radius maximum point of the spiral line (23) of the turntable (2) is larger than the measurement blind area of the laser range finder (6).
5. The spindle angle measurement mechanism of claim 4, wherein: the laser emission point and the photosurface of the laser range finder (6) are corresponding to the outer cutting surface of the spiral line (23) of the turntable (2).
6. The spindle angle measurement mechanism of claim 5, wherein: the maximum radius point of the spiral line (23) is connected with the axis of the rotating shaft (1), the connecting line is demarcated with the intersection point of the rotating disc (2), the connecting line between the demarcation point and the maximum radius point of the spiral line (23) is an effective measuring range (7), and the connecting line between the demarcation point and the axis of the rotating shaft (1) is a zero calibration distance (8).
7. The spindle angle measurement mechanism of claim 6, wherein: the rotating shaft (1) and the rotating disc (2) can be connected into a whole by welding or a key groove.
8. The spindle angle measurement mechanism according to any one of claims 1 to 7, wherein: the bottom of the rotating shaft (1) is provided with a magnet block (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323173962.0U CN220982215U (en) | 2023-11-24 | 2023-11-24 | Rotating shaft angle measuring mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323173962.0U CN220982215U (en) | 2023-11-24 | 2023-11-24 | Rotating shaft angle measuring mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220982215U true CN220982215U (en) | 2024-05-17 |
Family
ID=91054655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323173962.0U Active CN220982215U (en) | 2023-11-24 | 2023-11-24 | Rotating shaft angle measuring mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220982215U (en) |
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2023
- 2023-11-24 CN CN202323173962.0U patent/CN220982215U/en active Active
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