CN108237424B - Workpiece positioning device and positioning method - Google Patents
Workpiece positioning device and positioning method Download PDFInfo
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- CN108237424B CN108237424B CN201611215997.8A CN201611215997A CN108237424B CN 108237424 B CN108237424 B CN 108237424B CN 201611215997 A CN201611215997 A CN 201611215997A CN 108237424 B CN108237424 B CN 108237424B
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- workpiece
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/18—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for positioning only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
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Abstract
The present invention relates to a workpiece positioning apparatus and method, wherein a positioning device includes: the workpiece fixing support is used for supporting and fixing the workpiece and adjusting the position of the workpiece; the alignment device is used for acquiring an image of a workpiece and adjusting the position of the workpiece according to a preset image to align the preset image with the image of the workpiece; the positioning device is arranged between the workpiece fixing support and the alignment device; and adjusting the position of the positioning device to position the workpiece. The invention utilizes the image acquisition device to acquire images, takes the images acquired in real time as a software background page, selects a preset alignment pattern, aligns the workpiece and further selects a positioning point, realizes the function of adjusting the position and the size of the alignment pattern, and meets the requirement of software positioning. The invention has the advantages of low cost, simple technology, simple measurement and positioning, high efficiency and capability of positioning materials with various sizes, and effectively reduces the processing cost of workpieces.
Description
Technical Field
The invention relates to the technical field of machining, in particular to a workpiece positioning device and a positioning method.
Background
This section is intended to introduce the reader to various aspects of art that may be related to various aspects of the present invention, and is believed to provide the reader with useful background information to facilitate a better understanding of the various aspects of the present invention. Accordingly, it should be understood that the description in this section is for purposes of illustration and is not an admission of prior art.
Usually, a corresponding position on a workpiece is positioned according to the machining requirement for machining, and the workpiece rejection rate is extremely high because the workpiece cannot be accurately measured and positioned through manual naked eye observation. In the method of measuring by using the tool, due to the difference of the shape and size of the workpiece, or uneven surface, it is difficult to find a proper tool for measurement and positioning, so that the workpiece is difficult to process.
In the existing processing mode (taking the positioning and measurement of the central position of a cylindrical surface as an example), when a cylinder with a central hole on the cylindrical surface is processed, a method that a numerical control machine tool firstly punches and then lathes the cylinder by a lathe tool is adopted. For the device processing of punching a central hole behind the original cylinder, the central point is usually taken to face two conditions: as shown in fig. 1, in a case where the surface of the cylindrical surface of the cylinder 1 horizontally and vertically intersects the cylinder, a center point 11 can be located (the requirement for a non-center point cannot be met) by using a tool such as a circle center ruler; as shown in fig. 2, another situation is that the cylindrical surface 10 of the cylinder 1 is non-planar and not perpendicular to the cylinder (irregular shape), and the positioning of the central point 11 can only be accomplished by an advanced laser measuring instrument in combination with a numerical control machine tool, which has extremely high requirements on technical requirements and processing cost.
In the prior art, the position is positioned according to the machining requirement on a common workpiece to be machined, the workpiece rejection rate is extremely high because the accurate measurement and positioning cannot be carried out through naked eye observation, and the requirement that the workpiece is difficult to machine is caused because a proper tool is difficult to find for measurement and positioning because the shape and the size of the workpiece are different or the surface is not horizontal or uneven by adopting a tool measurement method.
Disclosure of Invention
The technical problem to be solved is how to provide a workpiece positioning device and a positioning method.
Aiming at the defects in the prior art, the invention provides a workpiece positioning device and a workpiece positioning method, which can simply and effectively realize the positioning of a workpiece.
In a first aspect, the present invention provides a workpiece positioning apparatus comprising:
the workpiece fixing support is used for supporting and fixing the workpiece and adjusting the position of the workpiece;
the alignment device is used for acquiring an image of a workpiece and adjusting the position of the workpiece according to a preset image to align the preset image with the image of the workpiece;
the positioning device is arranged between the workpiece fixing support and the alignment device;
and adjusting the position of the positioning device to position the workpiece.
Optionally, the alignment device includes a bracket, and an image acquisition device fixed on the bracket;
the display device is in communication connection with the image acquisition device and is used for displaying the image of the workpiece and a pre-designed figure.
Optionally, the alignment device is a smart phone or a PAD.
Optionally, a groove is formed in the support and used for placing and fixing a smart phone or a PAD.
Optionally, a level is provided on the support.
Optionally, the positioning device comprises:
the axial direction of the positioning tube is parallel to the image acquisition direction of the image acquisition device;
a positioning center is arranged in the positioning pipe.
Optionally, the positioning tube is a semi-open positioning tube.
Optionally, a processing tool is further disposed on the positioning device.
In another aspect, the present invention further provides a workpiece positioning method applied to the workpiece positioning apparatus, where the method includes:
fixing the workpiece on the workpiece fixing support;
acquiring an image of a workpiece, and adjusting the position of the workpiece according to a preset pattern to align the preset pattern with the image of the workpiece;
and adjusting the position of the positioning device to position the workpiece.
According to the technical scheme, the workpiece positioning device and the positioning method provided by the invention utilize the image acquisition device to acquire images, use the images acquired in real time as software background pages, select preset alignment patterns, align the workpiece and further select positioning points, realize the function of adjusting the position and size of the alignment patterns, and meet the requirement of software positioning. The invention has the advantages of low cost, simple technology, simple measurement and positioning, high efficiency and capability of positioning materials with various sizes, and effectively reduces the processing cost of workpieces.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description will be given below of the drawings required for the description of the embodiments or the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic view of a prior art standard cylindrical workpiece positioning;
FIG. 2 is a schematic view of a prior art positioning of a cylindrical workpiece with an uneven machined surface;
FIG. 3 is a schematic view of a workpiece positioning device according to an embodiment of the invention;
FIG. 4 is a schematic view of a workpiece positioning device according to another embodiment of the present invention;
FIG. 5 is a schematic view of a bracket of the positioning device in accordance with an embodiment of the present invention;
FIG. 6 is a schematic view of a positioning tube structure of a positioning device in accordance with an embodiment of the present invention;
FIG. 7 is a schematic view of an interface of a positioning device in an embodiment of the present invention'
Fig. 8 is a flow chart of a positioning method according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present 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.
As shown in fig. 3, the present invention provides a workpiece positioning apparatus comprising: a workpiece fixing support 2 (optional cross bench clamp) for supporting and fixing the workpiece 1 and adjusting the position of the workpiece; the alignment device 3 is used for acquiring an image of the workpiece and adjusting the position of the workpiece according to a preset image to align the preset image with the image of the workpiece; the positioning device 4 is arranged between the workpiece fixing support 2 and the alignment device 3; the positioning device is used for adjusting the position of the positioning device to position the workpiece. The following provides a detailed description of the present invention and the workpiece positioning apparatus provided.
As shown in fig. 4, the workpiece positioning apparatus further includes a support 21, and an image pickup device 23 fixed to the support 21. The support 21 employs a four-footed stabilization device. The workpiece positioning apparatus further comprises a display device 22, the display device 22 is in communication with the image acquisition device 23, and the display device 22 is used for displaying the image of the workpiece 1 and the pre-designed pattern. The aligning device 3 is a smart phone or a PAD. It can be understood that the other image acquisition devices, the display device and the processor can still realize the corresponding functions of the alignment device, and the display device is not necessarily arranged at other positions on the bracket.
As shown in fig. 5, a groove 29 is provided on the pair of brackets 21, and the groove 29 is used for placing and fixing a smartphone or a PAD. The mobile phone or the PAD is fixed through the groove 29, and a camera of the mobile phone or the PAD is aligned with the processing surface of the workpiece. The groove 29 is provided with a through hole for light to enter the camera. As shown in figure 5, the large groove 29 can be used for accommodating various common mobile phones. The support is provided with the level gauge, the balance of the support can be effectively adjusted through the level gauge so as to keep the projection of the camera of the mobile phone or the PAD to be vertical to the processing surface of the workpiece, the image acquisition surface of the camera is positioned on a horizontal plane, and the positioning accuracy is finally guaranteed. In order to ensure that the workbench is placed horizontally, the number of the gradienters is two.
As shown in fig. 6, the positioning device further includes: a positioning tube 26, the axial direction of the positioning tube 26 being perpendicular to the image acquisition plane of the camera of the image acquisition device 23; a positioning centering 27 is arranged in the positioning tube. In order to avoid the lighting problem of the mobile phone camera, the positioning tube is a semi-open positioning tube. An annular shape is integrated in the positioning tube 26, and an alignment center 27 is arranged in the annular shape of the positioning tube and used for shooting corresponding to a mobile phone. When the center of the mobile phone image coincides with the center of alignment 27 of the positioning tube 26, the corresponding points of the workpiece satisfy the positioning position of three points and one line. In order to ensure that the machining position coincides with the measured point, three drill holders are provided on the positioning tube 26, and the fixed drill can directly perforate the measured point. Since the center point of the default positioning tube is aligned with the center point of the camera, if the positioning point is not at the center point of the workpiece, the position of the positioning tube needs to be further adjusted to align the positioning center 27 of the positioning tube with the positioning point of the workpiece to be processed, so as to complete the positioning.
The following specifically describes the working process of the workpiece positioning device provided by the present invention by taking the workpiece as a cylinder with an uneven surface as an example:
the workpiece 1 is fixed on the workpiece-holding support 2, the handset or PAD is fixed in the recess 29 of the support 21, and the balance of the support 21 is available via the level to keep the camera of the handset or PAD perpendicular to the projection of the workpiece processing surface. As shown in fig. 7, the positioning software installed in the mobile phone or the pad is started, the graph closest to the workpiece is selected at the lower left corner of the software interface, the outer edge of the workpiece in the image is overlapped with the selected graph by adjusting the workpiece fixing support piece 2 and the size of the selected graph, the size can be finely adjusted through the slider at the lower right corner of the software interface in the adjusting process, and the position of the adjusted graph is finely adjusted through the fine adjustment button at the lower middle part of the graphical interface. And further adjusting the position of the positioning tube to complete the positioning of the workpiece. With three drill holders on the positioning tube 26, the fixed drill can directly mark the position on the desired measured positioning point or the desired machining positioning point of the workpiece 1.
In order to further embody the advantages of the workpiece positioning equipment provided by the invention, the invention also provides the advantages of the device, and the invention also provides a workpiece positioning method applied to the positioning equipment, wherein the method comprises the following steps: fixing the workpiece on the workpiece fixing support; acquiring an image of a workpiece, and adjusting the position of the workpiece according to a preset pattern to align the preset pattern with the image of the workpiece; the position of the positioning device positions the workpiece. The workpiece positioning method provided by the invention is basically the same as the positioning process of the workpiece positioning device, and is not repeated herein.
It should be further noted that the positioning software in the present invention can be applied to an Android system and can also be applied to an Ios system, and therefore, the present invention can be implemented in both intelligent devices that install the positioning software. Aiming at some workpieces with irregular shapes, the positioning software is also loaded with a drawing tool and a coordinatometer system, and can realize the drawing function of points, lines and basic image frames.
After the positioning is finished, the workpiece can be further processed or measured according to the corresponding positioning points. The workpiece positioning device and the positioning method provided by the invention are not only suitable for drilling the workpiece by the drill bit, but also can cut and polish the workpiece through a plurality of positioning point marks.
In summary, the workpiece positioning device and the positioning method provided by the invention utilize the image acquisition device to acquire images, use the images acquired in real time as software background pages, select preset alignment patterns, align the workpiece and further select positioning points, realize the function of adjusting the position and size of the alignment patterns, and meet the requirements of software positioning. The invention has the advantages of low cost, simple technology, simple measurement and positioning, high efficiency and capability of positioning materials with various sizes, and effectively reduces the processing cost of workpieces.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. The terms "upper", "lower", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description. Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention is not limited to any single aspect, nor is it limited to any single embodiment, nor is it limited to any combination and/or permutation of these aspects and/or embodiments. Moreover, each aspect and/or embodiment of the present invention may be utilized alone or in combination with one or more other aspects and/or embodiments thereof.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (8)
1. A workpiece positioning apparatus, comprising:
the workpiece fixing support is used for supporting and fixing the workpiece and adjusting the position of the workpiece;
the alignment device is used for acquiring an image of a workpiece and adjusting the position of the workpiece according to a preset image to align the preset image with the image of the workpiece;
the positioning device is arranged between the workpiece fixing support and the alignment device;
adjusting the position of the positioning device to position the workpiece;
wherein the alignment device comprises an image acquisition device;
the positioning device includes:
the axial direction of the positioning tube is parallel to the image acquisition direction of the image acquisition device;
a positioning center is arranged in the positioning pipe;
the center point of the positioning tube is aligned with the camera of the image acquisition device.
2. The workpiece positioning apparatus of claim 1, wherein the alignment device comprises a support on which the image capture device is secured;
the display device is in communication connection with the image acquisition device and is used for displaying the image of the workpiece and a pre-designed figure.
3. The workpiece positioning apparatus of claim 2, wherein the alignment device is a smartphone or a PAD.
4. The workpiece positioning apparatus of claim 2, wherein the support is provided with a groove for placing and securing a smartphone or PAD.
5. A workpiece positioning apparatus as claimed in claim 2 characterised in that a level is provided on the carriage.
6. The workpiece positioning apparatus of claim 5, wherein the positioning tube is a semi-open positioning tube.
7. The workpiece positioning apparatus of claim 1, wherein a machining tool is further provided on the positioning device.
8. A workpiece positioning method applied to the workpiece positioning apparatus of any one of claims 1 to 7, the method comprising:
fixing the workpiece on the workpiece fixing support;
acquiring an image of a workpiece, and adjusting the position of the workpiece according to a preset pattern to align the preset pattern with the image of the workpiece;
adjusting the position of the positioning device to position the workpiece;
wherein the alignment device comprises an image acquisition device;
the positioning device includes:
the axial direction of the positioning tube is parallel to the image acquisition direction of the image acquisition device;
a positioning center is arranged in the positioning pipe;
the center point of the positioning tube is aligned with the camera of the image acquisition device.
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| CN201611215997.8A CN108237424B (en) | 2016-12-26 | 2016-12-26 | Workpiece positioning device and positioning method |
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| CN201611215997.8A CN108237424B (en) | 2016-12-26 | 2016-12-26 | Workpiece positioning device and positioning method |
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| CN108237424B true CN108237424B (en) | 2020-05-15 |
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| CN109146865B (en) * | 2018-08-22 | 2020-05-05 | 成都新西旺自动化科技有限公司 | Visual alignment detection graph source generation system |
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| CN108237424A (en) | 2018-07-03 |
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