CN112683432A - Method for testing torsion of rotating shaft of notebook computer - Google Patents
Method for testing torsion of rotating shaft of notebook computer Download PDFInfo
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Abstract
The application provides a method for testing torsion of a rotating shaft of a notebook computer, which comprises the steps of adopting clamping mechanisms to drive a first rotating shaft and a second rotating shaft to rotate respectively, obtaining rotating angles, obtaining the distance from the clamping position of each clamping mechanism on the corresponding rotating shaft to the axis of the rotating shaft, obtaining the torsion of the rotating shaft according to the angles and the distances, and further obtaining an angle-torsion first curve. The automatic rotating driving device can realize the automatic rotating driving, does not need manual operation, avoids errors caused by the manual operation, and improves the precision of the detection of the torque force of the rotating shaft. Meanwhile, according to the first angle-torsion curve, the relation between the rotating angle of the rotating shaft and the torsion can be intuitively obtained, the torsion and the angle at the moment of the failure of the rotating shaft can be accurately obtained according to the inflection point existing on the curve, the total value of the rotating angle of the rotating shaft can be obtained, the rotating number or the rotating frequency of the rotating shaft can be calculated according to the total value of the angle, and the service life of the rotating shaft can be obtained.
Description
Technical Field
The application relates to the technical field of torsion testing, in particular to a torsion testing method for a rotating shaft of a notebook computer.
Background
The upper cover of the notebook computer is generally turned over by the rotating shaft. At the upper cover upset in-process, the pivot can receive the torsion of certain degree, and at the long-term back that opens and shuts of upper cover, the pivot can take place fatigue and damage, simultaneously, if too big to the rotation dynamics of upper cover, also can lead to the torsion that the pivot received too big, cause the pivot to damage. Therefore, when the notebook computer is assembled, the torsion of the rotating shaft of the notebook computer needs to be detected to ensure that the torsion of the rotating shaft of the notebook computer meets the requirement. However, the error of the data tested by manual operation is too large to analyze the fault data accurately.
Disclosure of Invention
The application aims to provide a method for testing torsion of a rotating shaft of a notebook computer, so that automatic testing is realized, and testing precision is improved.
The application provides a torsion testing method for a rotating shaft of a notebook computer, which comprises the following steps:
clamping a first rotating shaft on one side of a notebook by using a first clamping mechanism;
acquiring a first distance between a clamping position of the first clamping mechanism on the first rotating shaft and the axis of the first rotating shaft;
clamping a second rotating shaft on the other side of the notebook by using a second clamping mechanism;
acquiring a second distance between a clamping position of the second clamping mechanism on the second rotating shaft and the axis of the second rotating shaft;
controlling the first clamping mechanism and the second clamping mechanism to respectively drive the first rotating shaft and the second rotating shaft to rotate within a set angle range;
collecting a first angle rotated by the first rotating shaft and a second angle rotated by the second rotating shaft;
calculating and obtaining a first torsion of the first rotating shaft according to the first distance and the first angle, and obtaining a second torsion of the second rotating shaft according to the second distance and the second angle;
obtaining an angle-torque first curve according to the first and second torque forces and the first and second angles.
In one possible implementation, after obtaining an angle-torque first curve from the first and second torque forces and the first and second angles, the method further includes:
controlling the first clamping mechanism to drive the first rotating shaft to rotate;
collecting a third angle rotated by the first rotating shaft;
calculating according to the third angle and the first distance to obtain a first unilateral torque force;
and obtaining an angle-torque second curve according to the first single-side torque and the third angle.
In one possible implementation, after obtaining an angle-torque first curve from the first and second torque forces and the first and second angles, the method further includes:
controlling the second clamping mechanism to drive the second rotating shaft to rotate;
collecting a fourth angle rotated by the second rotating shaft;
calculating according to the fourth angle and the second distance to obtain a second unilateral torque force;
and obtaining a third angle-torque curve according to the second unilateral torque force and the fourth angle.
In one possible implementation, after obtaining an angle-torque first curve from the first and second torque forces and the first and second angles, the method further includes:
and calculating to obtain an angle-torsion slope change curve according to the angle-torsion first curve.
In one possible implementation, before clamping the first pivot on one side of the notebook with the first clamping mechanism, the method further comprises:
and establishing a curve slope reference database.
In one possible implementation, after obtaining an angle-torsion slope change curve according to the angle-torsion first curve calculation, the method further includes:
judging whether the slope of the angle-torsion slope change curve is in the range limited by the curve slope reference database;
if yes, controlling the first clamping mechanism and the second clamping mechanism to respectively drive the first rotating shaft and the second rotating shaft to rotate within a set angle range;
if not, identifying the inflection point of the angle-torsion slope change curve, acquiring a part of angle-torsion slope change curve behind the inflection point, and adding the part of angle-torsion slope change curve into the curve slope reference database.
In a possible implementation manner, the controlling the first clamping mechanism and the second clamping mechanism to respectively drive the first rotating shaft and the second rotating shaft to rotate within a set angle range specifically includes:
controlling the first clamping mechanism and the second clamping mechanism to respectively drive the first rotating shaft and the second rotating shaft to rotate in a reciprocating manner within a set angle range;
and recording the times of reciprocating rotation of the first rotating shaft and the second rotating shaft.
In a possible implementation manner, a first sensor is arranged on the first clamping mechanism, a second sensor is arranged on the second clamping mechanism, the first sensor collects the angle of the first rotating shaft, and the second sensor collects the angle of the second rotating shaft.
In a possible implementation manner, the acquiring a first angle rotated by the first rotating shaft and a second angle rotated by the second rotating shaft specifically includes:
and when the first rotating shaft or the second rotating shaft rotates by 0.01 degree, the first sensor or the second sensor collects the first angle or the second angle once.
In a possible implementation manner, the set angle range value is 0-180 degrees.
The technical scheme provided by the application can achieve the following beneficial effects:
the method for testing the torsion of the rotating shaft of the notebook computer can realize automatic driving rotation of the rotating shaft, does not need manual operation, avoids errors caused by the manual operation, and improves the precision of the torsion detection of the rotating shaft. Meanwhile, according to the first angle-torsion curve, the relation between the rotating angle of the rotating shaft and the torsion can be intuitively obtained, the torsion and the angle at the moment of the failure of the rotating shaft can be accurately obtained according to the inflection point existing on the curve, the total value of the rotating angle of the rotating shaft can be obtained, the rotating number or the rotating frequency of the rotating shaft can be calculated according to the total value of the angle, and the service life of the rotating shaft can be obtained.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
Fig. 1 is a flowchart of a method for testing torsion of a rotating shaft of a notebook computer according to an embodiment of the present disclosure.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In the description of the present application, unless explicitly stated or limited otherwise, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless specified or indicated otherwise; the terms "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, integrally connected, or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In the description of the present application, it should be understood that the terms "upper" and "lower" used in the description of the embodiments of the present application are used in a descriptive sense only and not for purposes of limitation. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.
As shown in fig. 1, an embodiment of the present application provides a method for testing torsion of a rotating shaft of a notebook computer, which includes the following steps:
and step S1, clamping the first rotating shaft at one side of the notebook by using the first clamping mechanism.
This first fixture includes first servo motor and first clamping jaw, and first pivot can be held to first clamping jaw to drive first pivot synchronous rotation through first servo motor.
Step S2, a first distance between a clamping position of the first clamping mechanism on the first rotating shaft and an axis of the first rotating shaft is obtained.
And step S3, clamping a second rotating shaft on the other side of the notebook by using a second clamping mechanism.
The second clamping mechanism comprises a second servo motor and a second clamping jaw, the second clamping jaw can clamp the second rotating shaft, and the second servo motor drives the second clamping jaw to drive the second rotating shaft to rotate synchronously.
It should be noted that, the two rotating shafts of the notebook computer are generally located at two sides of the notebook computer, and the upper cover of the notebook computer can be turned over through the synergistic effect of the two rotating shafts. In this embodiment, the first rotating shaft and the second rotating shaft may have the same structure.
And step S4, acquiring a second distance between the clamping position of the second clamping mechanism on the second rotating shaft and the axis of the second rotating shaft.
And step S5, controlling the first clamping mechanism and the second clamping mechanism to respectively drive the first rotating shaft and the second rotating shaft to rotate within a set angle range.
The set angle can be 0-180 degrees, preferably the angle is 0-130 degrees, because the opening angle of the upper cover is generally obtuse and is rarely 180 degrees in order to align the screen of the upper cover with the eyes when a user uses the notebook computer, the upper cover can rotate between 0-130 degrees, and the condition that the user normally uses the computer can be reflected.
And step S6, collecting a first angle rotated by the first rotating shaft and a second angle rotated by the second rotating shaft.
Step S7, calculating a first torque of the first rotating shaft according to the first distance and the first angle, and obtaining a second torque of the second rotating shaft according to the second distance and the second angle.
Step S8, obtaining an angle-torque first curve according to the first and second torque forces and the first and second angles.
Therefore, the method for testing the torsion of the rotating shaft of the notebook computer can realize automatic driving rotation of the rotating shaft without manual operation, avoid errors caused by the manual operation and improve the precision of the torsion detection of the rotating shaft. Meanwhile, according to the first angle-torsion curve, the relation between the rotating angle of the rotating shaft and the torsion can be intuitively obtained, the torsion and the angle at the moment of the failure of the rotating shaft can be accurately obtained according to the inflection point existing on the curve, the total value of the rotating angle of the rotating shaft can be obtained, the rotating number or the rotating frequency of the rotating shaft can be calculated according to the total value of the angle, and the service life of the rotating shaft can be obtained.
In addition, through the synchronous operation of the first clamping mechanism and the second clamping mechanism, the synchronous test of the first rotating shaft and the second rotating shaft on two sides of the notebook computer can be simultaneously controlled, so that the torsion and failure modes of the first rotating shaft and the second rotating shaft can be simultaneously tested under the condition that the first rotating shaft and the second rotating shaft are stressed.
In a specific embodiment, after step S8, the method further includes:
step S9a1, controlling the first clamping mechanism to drive the first rotating shaft to rotate.
And S9a2, acquiring a third angle rotated by the first rotating shaft.
And step S9a3, calculating to obtain a first unilateral torque force according to the third angle and the first distance.
And step S9a4, obtaining an angle-torque second curve according to the first single-sided torque and the third angle.
In this embodiment, the first clamping mechanism drives the first rotating shaft to rotate only, and the second clamping mechanism is not started, so that the upper cover of the notebook computer rotates along with the driving of the first rotating shaft, and the second rotating shaft can rotate along with the first rotating shaft. At the moment, the single-side driving turnover of the upper cover of the notebook computer on one side of the first rotating shaft can be realized, so that the torsion change and failure mode when the upper cover is independently driven to turn over by the first rotating shaft can be tested, and the torsion and the angle of the first rotating shaft can be directly obtained through the angle-torsion second curve.
Of course, in another specific embodiment, after step S8, the method further includes:
and step S9b1, controlling the second clamping mechanism to drive the second rotating shaft to rotate.
And S9b2, acquiring a fourth angle rotated by the second rotating shaft.
And step S9b3, calculating according to the fourth angle and the second distance to obtain a second unilateral torsion.
And step S9b4, obtaining a third angle-torque curve according to the second single-side torque and the fourth angle.
In this embodiment, the second rotating shaft is driven to rotate only by the second clamping mechanism, and the first clamping mechanism is not started, so that the upper cover of the notebook computer rotates along with the driving of the second rotating shaft, and the first rotating shaft can rotate along with the second rotating shaft. At the moment, the single-side driving turnover of the upper cover of the notebook computer on one side of the second rotating shaft can be realized, so that the torsion change and failure mode when the upper cover is independently driven by the second rotating shaft to turn can be tested, and the torsion and the angle of the second rotating shaft can be directly obtained through an angle-torsion third curve.
As a specific implementation manner, after step S8, the method further includes:
and step S9c, calculating and obtaining an angle-torsion slope change curve according to the angle-torsion first curve.
The change condition of the torsion can be known by calculating the slope of the curve corresponding to each torsion value position on the angle-torsion first curve, and each slope is drawn into a slope change curve, so that the change of the torsion of the rotating shaft in the rotating process can be obtained, and whether the change of the torsion meets the requirement or not can be obtained according to the angle-torsion slope change curve.
It should be noted that, before step S1, the method may further include:
and step S0, establishing a curve slope reference database.
After obtaining the angle-torque slope change curve, the angle-torque slope change curve may be compared with the curve slope reference database to determine whether the slope of the angle-torque slope change curve is within the range defined by the curve slope reference database.
Specifically, after step S9c, the method further includes:
step S9c1, judging whether the slope of the angle-torsion slope change curve is in the range limited by the curve slope reference database; if yes, go to step S5; if not, proceed to step S9c 2.
And S9c2, identifying the inflection point of the angle-torsion slope change curve, acquiring a part of angle-torsion slope change curve behind the inflection point, and adding the part of angle-torsion slope change curve into a curve slope reference database.
If the slope of the angle-torque slope change curve is within the range defined by the curve slope reference database, the rotating shaft is in a normal working state, and the first clamping mechanism and the second clamping mechanism can be continuously controlled to respectively drive the first rotating shaft and the second rotating shaft to rotate within the set angle range. If the slope of the angle-torsion slope change curve exceeds the range limited by the curve slope reference database, the condition that the curve slope reference database is recorded occurs in the rotating process of the rotating shaft, at the moment, a turning point with torsion abrupt change occurs on the angle-torsion slope change curve, and after a curve behind the turning point is formed, the part of the curve behind the turning point can be added into the curve slope reference database so as to facilitate the subsequent data processing and analysis.
As a specific implementation manner, step S5 specifically includes:
and step S51, controlling the first clamping mechanism and the second clamping mechanism to respectively drive the first rotating shaft and the second rotating shaft to rotate in a reciprocating manner within a set angle range. Specifically, the cover plate can be driven to turn over between 0 and 130 degrees in a reciprocating mode through rotation of the first rotating shaft and the second rotating shaft.
And step S52, recording the times of the reciprocating rotation of the first rotating shaft and the second rotating shaft. In this embodiment, the cover may be rotated once from opening to reclosing.
As a specific implementation mode, a first sensor can be arranged on the first clamping mechanism, a second sensor can be arranged on the second clamping mechanism, the angle of the first rotating shaft is collected through the first sensor, and the angle of the second rotating shaft is collected through the second sensor.
The first sensor is coaxial with the first rotating shaft, and the second sensor is coaxial with the second rotating shaft, so that the first sensor can detect the rotating angle value of the first rotating shaft in the rotating process along with the first rotating shaft; likewise, the second sensor is coaxial with the second shaft, thereby enabling the second sensor to detect the value of the angle through which the second shaft rotates during rotation with the second shaft.
As a specific implementation manner, step S6 specifically includes:
the first sensor or the second sensor collects the first angle or the second angle once when the first rotating shaft or the second rotating shaft rotates by 0.01 degrees. Therefore, multiple groups of angle and torque data can be obtained in one rotation of the first rotating shaft or the second rotating shaft, so that the accuracy of the angle-torque first curve is ensured.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A torsion testing method for a rotating shaft of a notebook computer is characterized by comprising the following steps:
clamping a first rotating shaft on one side of a notebook by using a first clamping mechanism;
acquiring a first distance between a clamping position of the first clamping mechanism on the first rotating shaft and the axis of the first rotating shaft;
clamping a second rotating shaft on the other side of the notebook by using a second clamping mechanism;
acquiring a second distance between a clamping position of the second clamping mechanism on the second rotating shaft and the axis of the second rotating shaft;
controlling the first clamping mechanism and the second clamping mechanism to respectively drive the first rotating shaft and the second rotating shaft to rotate within a set angle range;
collecting a first angle rotated by the first rotating shaft and a second angle rotated by the second rotating shaft;
calculating and obtaining a first torsion of the first rotating shaft according to the first distance and the first angle, and obtaining a second torsion of the second rotating shaft according to the second distance and the second angle;
obtaining an angle-torque first curve according to the first and second torque forces and the first and second angles.
2. The torsion testing method for a rotating shaft of a notebook computer according to claim 1, wherein after obtaining an angle-torsion first curve according to the first torsion and the second torsion and the first angle and the second angle, the method further comprises:
controlling the first clamping mechanism to drive the first rotating shaft to rotate;
collecting a third angle rotated by the first rotating shaft;
calculating according to the third angle and the first distance to obtain a first unilateral torque force;
and obtaining an angle-torque second curve according to the first single-side torque and the third angle.
3. The torsion testing method for a rotating shaft of a notebook computer according to claim 1, wherein after obtaining an angle-torsion first curve according to the first torsion and the second torsion and the first angle and the second angle, the method further comprises:
controlling the second clamping mechanism to drive the second rotating shaft to rotate;
collecting a fourth angle rotated by the second rotating shaft;
calculating according to the fourth angle and the second distance to obtain a second unilateral torque force;
and obtaining a third angle-torque curve according to the second unilateral torque force and the fourth angle.
4. The torsion testing method for a rotating shaft of a notebook computer according to claim 1, wherein after obtaining an angle-torsion first curve according to the first torsion and the second torsion and the first angle and the second angle, the method further comprises:
and calculating to obtain an angle-torsion slope change curve according to the angle-torsion first curve.
5. The torsion testing method for the rotating shaft of the notebook computer according to claim 4, wherein before the first clamping mechanism is used for clamping the first rotating shaft on one side of the notebook computer, the method further comprises the following steps:
and establishing a curve slope reference database.
6. The torsion testing method for the rotating shaft of the notebook computer as claimed in claim 5, wherein after obtaining the angle-torsion slope variation curve according to the first angle-torsion curve, the method further comprises:
judging whether the slope of the angle-torsion slope change curve is in the range limited by the curve slope reference database;
if yes, controlling the first clamping mechanism and the second clamping mechanism to respectively drive the first rotating shaft and the second rotating shaft to rotate within a set angle range;
if not, identifying the inflection point of the angle-torsion slope change curve, acquiring a part of angle-torsion slope change curve behind the inflection point, and adding the part of angle-torsion slope change curve into the curve slope reference database.
7. The method for testing torsion of a rotating shaft of a notebook computer according to claim 1, wherein the controlling the first clamping mechanism and the second clamping mechanism to respectively drive the first rotating shaft and the second rotating shaft to rotate within a set angle range specifically comprises:
controlling the first clamping mechanism and the second clamping mechanism to respectively drive the first rotating shaft and the second rotating shaft to rotate in a reciprocating manner within a set angle range;
and recording the times of reciprocating rotation of the first rotating shaft and the second rotating shaft.
8. The torsion testing method for the rotating shaft of the notebook computer as claimed in claim 1, wherein a first sensor is arranged on the first clamping mechanism, a second sensor is arranged on the second clamping mechanism, the angle of the first rotating shaft is collected through the first sensor, and the angle of the second rotating shaft is collected through the second sensor.
9. The method for testing torsion of a rotating shaft of a notebook computer according to claim 8, wherein the collecting a first angle of rotation of the first rotating shaft and a second angle of rotation of the second rotating shaft specifically comprises:
and when the first rotating shaft or the second rotating shaft rotates by 0.01 degree, the first sensor or the second sensor collects the first angle or the second angle once.
10. The torsion testing method for notebook computer rotating shaft according to claim 1, wherein the set angle range is 0-180 °.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110005415.8A CN112683432B (en) | 2021-01-05 | 2021-01-05 | Method for testing torsion of rotating shaft of notebook computer |
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| CN202110005415.8A CN112683432B (en) | 2021-01-05 | 2021-01-05 | Method for testing torsion of rotating shaft of notebook computer |
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| CN112683432B (en) | 2022-07-19 |
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