Disclosure of Invention
In view of the current situation in the prior art, embodiments of the present invention provide a lead screw sorting system and method to realize rapid sorting of lead screws.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
in a first aspect, an embodiment of the present invention provides a screw sorting system, where the screw sorting system includes: the rotation driving device is connected with one end of the screw rod and is used for driving the screw rod to rotate; the image data acquisition device is used for acquiring and amplifying the image of the screw rod when the screw rod rotates, and uploading the amplified image data of the screw rod; and the display is connected with the image data acquisition device and used for displaying the amplified lead screw image and displaying an error boundary so as to sort the lead screw according to the lead screw image and the error boundary.
Compared with the prior art, the screw rod sorting system provided by the invention has the following beneficial effects:
in the screw sorting system, the screw is driven to rotate by the rotation driving device, the image data acquisition device acquires and amplifies the image of the screw, the amplified image data of the screw is uploaded to the display connected with the image data acquisition device, whether the boundary of the screw of the image of the screw exceeds the error boundary or not is judged in real time in the process of rotating the screw for a circle by observing the screw in the display, and the qualified screw, namely the screw which does not exceed the error boundary, is sorted, so that the screw can be conveniently and quickly sorted. The image data acquisition device in the lead screw sorting system can amplify the lead screw, and displays images through the display, the deflection of the lead screw can be visually and accurately observed, the technical problems that errors caused by the fact that the lead screw is a miniature part are difficult to judge and misjudgment is easy are solved, and because an error boundary is arranged on the display, whether the lead screw boundary in the lead screw image exceeds the error boundary or not and then judges whether the lead screw is qualified or not is judged through the judgment of the lead screw boundary, the operation is simple, the process is quick, and the rapid sorting of the lead screw in batches can be realized.
Optionally, the image data acquiring device is arranged outside the outer peripheral surface of the screw rod, and the observing direction of the image data acquiring device is perpendicular to the axial direction of the screw rod; or the image acquisition device is arranged on the outer side of one end of the screw rod, which is far away from the rotary driving device, and the observation direction of the image acquisition device is along the axial direction of the screw rod.
Optionally, the screw sorting system further comprises: the controller is connected with the display and is used for determining the error boundary and controlling the display to display the error boundary; the controller is also connected with the image data acquisition device and used for acquiring a screw rod image of the screw rod in the rotation process in real time and judging whether the screw rod boundary in the acquired screw rod image exceeds the error boundary so as to sort the screw rod.
Optionally, the screw sorting system further comprises: and the input device is connected with the controller and is used for inputting the maximum allowable deflection amount of the screw rod to the controller so that the controller can determine the error boundary.
In a second aspect, an embodiment of the present invention provides a screw sorting method, which is applied to the screw sorting system described above, and the screw sorting method includes: the rotation driving device drives the screw rod to rotate; in the rotation process of the screw rod, the image data acquisition device acquires and amplifies an image of the screw rod and uploads the amplified image data of the screw rod; the display displays the enlarged lead screw image and displays an error boundary so as to sort the lead screws according to the lead screw image and the error boundary.
By adopting the lead screw sorting method, the image amplified by the lead screw can be observed visually, whether the display image exceeds an error boundary in the rotation process of the lead screw can be judged by the lead screw, the lead screw can be sorted according to the judgment result, the operation is simple, the practicability is high, the complex data acquisition and calculation process is not needed, the lead screw can be sorted in large batch, the efficiency is improved, and the lead screw sorting method is convenient to use in the production line.
Optionally, the lead screw sorting method further includes: and the controller sorts the screw rods according to the screw rod images and the error boundaries.
Optionally, the controller sorts the lead screw according to the lead screw image and the error boundary, including: the controller acquires a screw rod image of the screw rod in the rotation process in real time, judges whether the screw rod boundary in the acquired screw rod image exceeds the error boundary, and if so, judges that the screw rod is unqualified; and if not, judging that the screw rod is qualified.
Optionally, the error bound comprises at least: a first level error boundary and a second level error boundary, and the first level error boundary is within the second level error boundary; the controller judges whether the lead screw boundary in the lead screw image exceeds the error boundary, and the method comprises the following steps: when the controller determines that the screw rod boundary in the screw rod image is located within the first grade error boundary, the screw rod is judged to be qualified and to be in a first grade; when the controller determines that the screw rod boundary in the screw rod image is located outside the first grade error boundary and within the second grade error boundary, the screw rod is judged to be qualified and to be in a second grade; and when the controller determines that the screw rod boundary in the screw rod image is positioned outside the second grade error boundary, judging that the screw rod is unqualified.
Optionally, before the display displays the error boundary, the method further includes: the controller determines an error bound; the controller sends the error boundary to the display.
Optionally, the controller determining an error bound comprises: the controller acquires the maximum allowable deflection amount of the screw rod; the controller determines the error margin based on the maximum allowable runout amount.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
For a lead screw in a multi-leaf grating for conformal emphasis technology, the deflection of the lead screw needs to be tested to sort out a lead screw with qualified deflection, and an embodiment of the invention provides a lead screw sorting system, as shown in fig. 1, which comprises: the rotation driving device 1 is connected with one end of the screw rod 4 and is used for driving the screw rod 4 to rotate; the image data acquisition device 2 is used for acquiring and amplifying the image of the screw rod 4 when the screw rod 4 rotates, and uploading the amplified screw rod image data; and the display 3 is connected with the image data acquisition device 2 and is used for displaying the enlarged screw rod image 5 and displaying the error boundary 7 so as to sort the screw rods 4 according to the screw rod image 5 and the error boundary 7.
Wherein, the boundary of the screw rod image 5 in the ideal state that the screw rod 4 is not bent when being installed on the rotary driving device 1 is referred to as a reference boundary 6, an error boundary 7 is arranged at the periphery of the reference boundary 6, and the distance between the reference boundary 6 and the error boundary is less than or equal to m times (i.e. H) of the maximum allowable deflection amount of the screw rod 4 (i.e. the maximum deflection amount set by the allowable screw rod)max) And m is the magnification of the magnified screw rod image 5 relative to the real screw rod 4.
It should be noted that the distance between the error boundary 7 and the reference boundary 6 may be set to be equal to m times of the maximum allowable deflection amount of the lead screw 4, so as to accurately sort out the lead screws 4 with qualified deflection amount; it may be set to be less than m times the maximum allowable deflection amount of the lead screw 4 to improve the quality of the sorted lead screw 4.
In some embodiments, when the image data obtaining device 2 is disposed outside the outer peripheral surface of the screw mandrel 4, and the observing direction of the image data obtaining device is perpendicular to the axial direction of the screw mandrel 4, the displayed screw mandrel boundary in the screw mandrel image 5 is a long-strip-shaped screw mandrel side view image, and the error boundary 7 is two straight lines or a rectangular frame or other figures at the periphery of or on the screw mandrel boundary in the screw mandrel image 5. When the image data obtaining device 2 is disposed outside one end of the screw 4 away from the rotation driving device 1, and the observing direction is along the axial direction of the screw 4, the screw boundary in the displayed screw image 5 is a circular screw section image, and the error boundary 7 is a circular ring at the periphery or on the screw boundary in the screw image 5.
In the screw sorting system, the screw 4 is driven to rotate by the rotation driving device 1, the image data acquisition device 2 acquires and amplifies the image of the screw 4, the amplified screw image data is uploaded to the display 3 connected with the image data acquisition device 2, whether the screw boundary in the screw image 5 exceeds the error boundary 7 or not is judged in real time by observing the screw 4 in the display 3 in the process of rotating for a circle, and the qualified screw 4, namely the screw 4 which does not exceed the error boundary 7, is sorted conveniently and quickly.
The image data acquisition device 2 in the screw sorting system can amplify the screw 4, displays images through the display 3, can visually and accurately observe the deflection of the screw 4, and solves the technical problems that errors are difficult to judge and misjudge due to the fact that the screw 4 is a micro part. And because the error boundary 7 is arranged on the display 3, whether the lead screw 4 is qualified or not can be judged by judging whether the lead screw boundary in the lead screw image 5 exceeds the error boundary 7, the operation is simple, the process is quick, a complex data acquisition process and complex calculation are not needed, and the lead screw 4 can be sorted quickly in batches.
As a possible design, the image data acquisition device 2 comprises a high power electron microscope. The lead screw 4 can be amplified by a plurality of times by adopting a high-power electron microscope, and the amplified lead screw image data is uploaded to the display 3, so that the rotary motion and deflection conditions of the lead screw 4 can be clearly and accurately observed, and the problem that the data is difficult to observe and obtain because the lead screw 4 is a miniature part is solved.
In some embodiments, the manner of sorting the lead screw 4 according to the lead screw image 5 and the error boundary 7 may be that the lead screw image 5 is observed by human eyes, whether the lead screw boundary in the lead screw image 5 exceeds the error boundary 7 is judged, and then the lead screw 4 is sorted.
In other embodiments, the lead screw 4 is sorted according to the lead screw image 5 and the error boundary 7, and can be automatically sorted by a hardware device and/or a software program. Referring to fig. 2, the lead screw sorting system further comprises: a controller 8 connected to the display 3 for determining the error boundary 7 and for controlling the display 3 to display the error boundary 7; the controller 3 is also connected with the image data acquisition device 2, and is used for acquiring a screw rod image 5 of the screw rod 4 in the rotation process in real time, and judging whether the screw rod boundary in the acquired screw rod image 5 exceeds an error boundary 7 or not so as to sort the screw rod 4.
In the above embodiment, the controller 8 determines the error boundary 7 and controls the display 3 to display the error boundary 7, so that the error boundary 7 is not required to be manually adjusted and set, the operation is simplified, and the accuracy is improved by machine operation. And the controller 8 can acquire the screw rod image 5 of the screw rod 4 in the rotation process in real time, further automatically judge whether the screw rod boundary in the acquired screw rod image 5 exceeds the error boundary 7, sort the screw rod 4 according to the judgment result, and do not need to judge through human eyes, so that the operation process is quicker, more efficient and more accurate.
In some embodiments, the controller 8 may be a CPU (Central Processing Unit), an MCU (Microcontroller Unit), a combinational logic controller, a microprogrammed controller, or the like.
As a possible design, referring to fig. 2, the screw sorting system further includes: an input device 9 is connected to the controller 8 for inputting the maximum allowed deflection of the screw 4 to the controller 8 for the controller 8 to determine the error margin 7.
In some embodiments, the input device 9 may be a mouse, a keyboard, a voice input device (e.g., a microphone), a touch screen, or the like.
As a possible design, referring to fig. 2, the screw sorting system further includes: when the controller 8 judges that the lead screw 4 is qualified, the voice prompt device 10 connected with the controller 8 broadcasts information such as the qualification of the lead screw or the grade of the lead screw through the voice prompt device 10, so that the lead screw 4 is sorted, and the feasibility of the lead screw sorting system is improved.
As a possible design, see fig. 2, the slewing drive 1 comprises: a clamping member 11 for clamping one end of the screw rod 4; and the motor 12 is connected with the clamping component 11 and is used for driving the screw rod 4 to rotate. Thus, one end of the screw rod 4 can be clamped and fixed by the clamping component 11, the screw rod 4 rotates under the driving of the motor 12, the rotating speed is relatively stable, and qualified screw rods 4 can be sorted out more accurately.
The embodiment of the invention also provides a screw rod sorting method, which is applied to the screw rod sorting system provided by the embodiment, and as shown in fig. 3, the screw rod sorting method comprises the following steps:
s10, the rotation driving device 1 drives the screw 4 to rotate.
In the above step S10, referring to fig. 2 again, the screw 4 is mounted on the rotation driving device 1, and the motor 12 is used to drive the screw 4 to rotate.
S20, in the process of rotating the lead screw 4, the image data acquiring device 2 acquires and enlarges the image of the lead screw 4, and uploads the enlarged lead screw image data.
In the above step S20, during the rotation of the lead screw 4, the image of the lead screw 4 is acquired and enlarged by the image data acquiring device 2 (which may be a high power microscope, for example), and the enlarged lead screw image data is uploaded to the display 3.
S30, the display 3 displays the enlarged lead screw image 5 and displays the error boundary 7, so as to sort the lead screw 4 according to the lead screw image 5 and the error boundary 7.
In the above step S30, the enlarged lead screw image 5 and the error boundary 7 are displayed by the display 3, the error boundary 7 is located at the periphery of the reference boundary 6, and the distance from the reference boundary 6 is less than or equal to m times (i.e., H) the maximum allowable runout amount of the lead screw 4 (i.e., the maximum runout amount set by the allowable lead screw)max) And m is the magnification of the magnified screw rod image 5 relative to the real screw rod 4.
By adopting the lead screw sorting method, the amplified lead screw image 5 can be visually observed, and the lead screw 4 can be sorted according to the judgment result by judging whether the lead screw boundary in the lead screw image 5 displayed by the lead screw 4 in the rotation process exceeds the error boundary 7. The automatic sorting machine is simple to operate and high in practicability, complex data acquisition and calculation processes are not needed, the lead screw 4 can be sorted in a large batch, the efficiency is improved, and the automatic sorting machine is convenient to use in a production line.
In some embodiments, the step of sorting the lead screw 4 according to the lead screw image 5 and the error boundary 7 may be to determine whether the lead screw boundary in the lead screw image 5 exceeds the error boundary 7 by human eyes, and then manually sort out the qualified lead screw 4.
In other embodiments, as shown in fig. 4, the step of sorting the lead screw 4 according to the lead screw image 5 and the error boundary 7 may be performed automatically using hardware devices and/or software programs. The lead screw sorting method further comprises the following steps: s40, the controller 8 sorts the lead screw 4 according to the lead screw image 5 and the error boundary 7. Whether the screw rod 4 is qualified or not is automatically judged through the controller 8, so that the labor cost is saved, and the judgment is more accurate than the judgment of human eye observation.
In some embodiments, as shown in fig. 5, the step S40 of the controller 8 sorting the lead screw 4 according to the lead screw image 5 and the error boundary 7 includes: s401, the controller 8 acquires a screw rod image 5 of the screw rod 4 in the rotation process in real time, S402, judges whether the screw rod boundary in the acquired screw rod image 5 exceeds an error boundary 7, and if so, judges that the screw rod 4 is unqualified; if not, the screw rod 4 is judged to be qualified.
In the above embodiment, in the rotation process of the screw 4, as long as the screw boundary in the displayed screw image 5 exceeds the error boundary 7, the screw 4 is determined to be a non-conforming product, and if the screw boundary in the displayed screw image 5 does not exceed the error boundary 7, the screw 4 is a conforming product, so that the operation is simple and standard, the accuracy and efficiency of sorting the screw 4 are further improved, and the time for sorting the screw 4 is shortened.
In order to further subdivide the mass of the screw 4 to meet different design requirements, as a possible design, as shown in fig. 6 and 9, the error margin 7 comprises at least: a first level error boundary 71 and a second level error boundary 72, and the first level error boundary 71 is located within the second level error boundary 72.
The step S402 of the controller 8 determining whether the lead screw boundary in the lead screw image 5 exceeds the error boundary 7 further includes:
when the controller 8 determines that the screw rod boundary in the screw rod image 5 is within the first grade error boundary 71, the screw rod 4 is judged to be qualified and is in the first grade;
when the controller 8 determines that the lead screw boundary in the lead screw image 5 is located outside the first grade error boundary 71 and within the second grade error boundary 72, the lead screw 4 is judged to be qualified and in the second grade;
and when the controller 8 determines that the screw rod boundary in the screw rod image 5 is positioned outside the second grade error boundary 72, determining that the screw rod 4 is unqualified.
By adopting the above method, the grade of the screw rod 4 can be conveniently and quickly judged, on the basis of judging that the screw rod 4 is qualified, whether the screw rod 4 is a superior product or a inferior product is further judged, the yield of the screw rod 4 is improved, the superior screw rod 4, for example, the screw rod 4 judged as the first grade is applied to the multi-leaf grating, the deflection amount is small, the quality is high, the service life and the flexibility of a plurality of groups of blades of the multi-leaf grating can be improved, and the obvious effect is further exerted in the conformal intensity modulation technology.
Referring to the above method, it is known to those skilled in the art that the number of sets of error boundaries 7 should not be limited to two sets, and may also include one set, three sets, or more than three sets of error boundaries to determine the quality grade of the screw 4 to meet different sorting requirements for the screw deflection.
As a possible design, as shown in fig. 7 and 8, before the display 3 displays the error boundary 7, the method further includes:
s201, the controller 8 determines an error boundary 7.
In some embodiments, the step S201 of the controller 8 determining the error boundary 7 includes: s2011, the controller 8 obtains the maximum allowable deflection amount of the lead screw 4; s2012, the controller 8 determines the error margin 7 according to the maximum allowable runout amount.
Illustratively, the above steps include the following processes: acquiring a displayed magnified screw image 5 versus realThe magnification m of the inter-lead screw 4 can be directly read from the image data acquisition device 2, or can be obtained by calculating the ratio of the diameter of the displayed lead screw image 5 to the diameter of the real lead screw 4. The maximum allowable deflection h of the screw 4 is input to the controller 8 through the input device 9max. The controller 8 controls the maximum allowable deflection h of the screw rod 4 according to the amplification factor mmaxThe distance H between the error boundary 7 and its corresponding reference boundary 6 is calculatedmax,Hmax=m×hmax。
S202, the controller 8 sends the error boundary 7 to the display 3. The display 3 thus displays the error border 7 at the periphery of the lead screw image 5.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.