JP2012199320A - Component library data preparation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a component library data preparation device capable of installing even an odd-shaped component and a non-self-supporting component easily and quickly on a work while shortening the preparation time of component library data.SOLUTION: Holes of a predetermined size are opened, at predetermined intervals, in a table on which an electronic component is installed so that the protrusions of an electronic component having downward or upward protrusions can be inserted. A drive system controller is also provided, and an optical system having a focus drive mechanism capable of changing the focus of the electronic component is provided. The drive system controller changes the focus of the electronic component by controlling the focus drive mechanism by a stroke dependent on the thickness of the electronic component. A camera captures the subject image with the focus thus changed and recognizes the thickness of the electronic component by preparing a three-dimensional image.

Description

  The present invention relates to a part library data creation device, and more particularly to creation of part library data for odd-shaped parts.

A component library data creation device is disclosed in, for example, Patent Document 1. In such a component library data creation device, component library data is generally created as two-dimensional data representing the characteristics of the mounting plane or projection plane of an electronic component.
With reference to FIG. 9, the configuration of the apparatus main body of the conventional parts library data creation apparatus will be described. FIG. 9 is a front view showing a schematic configuration of a conventional offline library teaching apparatus for teaching parts library data and creating parts library data. 99 is an apparatus main body of the parts library data creation apparatus, 90 is an installation stand, 91 is a table, 92 is a suction nozzle, 93 is a suction direction, 94 is a camera, 95 is an optical system, 98 is a workpiece to be measured, and S0 is It is a mounting plane.

In the front view of the apparatus main body 99 of the conventional parts library data creation apparatus in FIG. 9, the camera 94 and the table 91 are fixed and held on the installation stand 91. An optical system 95 is attached below the camera 91. The camera 91 captures the work 98 fixed on the lower table 92 with the assistance of the optical system 95, and the captured image is a creation application section (for example, a component library data creation apparatus outside the apparatus main body 99, not shown). Output to a computer.
The table 91 is provided with a suction mechanism for fixing the work 98. A suction nozzle 92 is attached in the vertical direction at the tip of the suction mechanism, and sucks air from the suction nozzle 92 side in the suction direction 93 via an intake pipe provided in the table 91. As a result, the bottom surface of the work 98 is attracted by the mounting surface S0, and the work 98 is fixed to the table 91.

JP 2007-294622 A

However, in the conventional parts library data creation apparatus such as Patent Document 1, it is possible to create two-dimensional part library data. However, three-dimensional part library data to which a height (thickness) direction is further added is used. I couldn't create it. Accordingly, it has not been possible to create part library data for odd-shaped parts that require three-dimensional data. Furthermore, as shown in FIG. 9, a component such as a connector that cannot stand on its own is fixed by sucking a workpiece. However, the work of sucking the work requires skill and requires a lot of work time. For example, a connector is a component that has a complex shape and is not self-supporting. Further, since one image is taken for one part, it takes time to create part library data for a large number of parts.
In view of the above problems, an object of the present invention is to provide a part library data creation device that can easily and quickly install irregularly shaped parts and parts that cannot be self-supported on a workpiece, and that shortens the part library data creation time. There is to do.

  In order to achieve the above object, the component library data creation apparatus of the present invention is characterized in that a plurality of holes are formed in a table for a component that cannot stand by itself and a protrusion below the mounting surface is allowed to escape.

  That is, the component library data creation device of the present invention includes a table for installing the electronic component for creating component library data of an electronic component, and an optical system that passes a subject image of the electronic component installed on the table. A camera that captures a subject image of an electronic component placed on the stage via the optical system, an optical system that can change a focal position of the camera, and an image captured by the camera for recognition processing and recognition A component library data generation device that generates a component library data based on the recognition processing result, and that has holes of a predetermined size at predetermined intervals in the table; Alternatively, the protrusion of an electronic component having a protrusion on the upper side can be inserted.

  Preferably, in the component library data creation device of the above invention, the optical system further includes a drive system controller, the optical system includes a focus drive mechanism capable of changing a focus of the electronic component, and the drive system controller includes the electronic system. The focus driving mechanism is controlled to change the focus of the electronic component by a stroke that depends on the thickness of the component, and the camera captures the subject image with the changed focus and uses the SFF (Shape From Focus) method. A three-dimensional image is created, and the recognition processing unit creates part library data based on the three-dimensional image.

In the component library data creation device of the above invention, the hole is circular.
Furthermore, in the parts library data creation apparatus of the above invention, a sample stage to which the stage is attached is provided, and a plurality of stages can be exchanged.

  According to the present invention, it is possible to reduce the time for creating part library data for irregularly shaped parts or parts that cannot be self-supporting.

It is a block diagram for demonstrating the structure of one Example of the parts library apparatus of this invention. It is a flowchart for demonstrating one Example of the part library preparation procedure of the irregularly shaped part of the parts library apparatus of this invention, or a component which cannot be self-supporting (henceforth atypically shaped part). It is a figure for demonstrating an example of the unusual shape part which the parts library apparatus of this invention handles. It is a figure for demonstrating one Example of the relationship between the table of the components library apparatus of this invention, and the workpiece | work installed. It is a figure for demonstrating in detail one Example of the relationship between the table of the components library apparatus of this invention, and the workpiece | work installed. It is a figure which shows the correspondence example of the hole space | interval n provided in the table of the components library apparatus of this invention, and the space | interval of the downward projection of the workpiece | work which can be installed in the said table. It is a figure which shows one Example when a some workpiece | work is arrange | positioned on the table of the parts library apparatus of this invention. It is a block diagram which shows the outline of the control structure of one Example of the components library data preparation apparatus of this invention. It is a front view which shows the schematic structure of the offline library teaching apparatus which teaches the conventional parts library data and produces parts library data.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In addition, the following description is for describing one embodiment of the present invention, and does not limit the scope of the present invention. Accordingly, those skilled in the art can employ embodiments in which these elements or all of the elements are replaced with equivalent ones, and these embodiments are also included in the scope of the present invention.
Further, in the present description, in the description of each of the following drawings, components having a common function are denoted by the same reference numerals and description thereof is omitted.

  An embodiment of the parts library device of the present invention will be described with reference to FIGS. FIG. 1 is a block diagram for explaining the configuration of an embodiment of a parts library apparatus according to the present invention. FIG. 2 is a flowchart for explaining an embodiment of a procedure for creating a part library for a deformed part or a self-supporting part (hereinafter referred to as a deformed part) in the part library apparatus of the present invention. FIG. 3 is a diagram for explaining an example of a deformed part handled by the parts library apparatus of the present invention. FIG. 4 is a diagram for explaining an embodiment of the relationship between the table of the parts library device of the present invention and the work (parts such as electronic parts) to be installed. FIG. 5 is a diagram for explaining in detail one embodiment of the relationship between the table of the parts library device of the present invention and the workpiece to be installed. FIG. 6 is a diagram showing a correspondence example between the hole interval n (n is a natural number of 1 or more) provided in the table of the component library apparatus of the present invention and the interval between the lower projections of the work that can be set on the table. FIG. 7 is a diagram showing an embodiment when a plurality of works are arranged on the table of the component library apparatus of the present invention. FIG. 8 is a block diagram showing an outline of the control configuration of an embodiment of the parts library data creation apparatus of the present invention.

  Reference numeral 100 denotes a parts library device, 28 denotes a work indicating each part for which the parts library device 100 is to create part library data, 1 denotes a camera for imaging the work 28, 2a to 2f denote optical systems, 3, 4 and 5 Is an illumination system, 6 is a table on which the work 28 is placed, 7 is a sample table, 8a is a stepping motor for moving the work 28 up and down, 8b is a solenoid for turning on / off the projection pattern, 21 is an interlock, 9 is a stepping motor 8a and Drive system controller for controlling the drive of the solenoid 8b and interlock 21; 10 a controller for controlling the brightness of the illuminations 3-5; 11-20 for various cables; 22 for an AC power connector; 23 for a PC (personal computer); 27 is an electrode of the work 28, 25 is a protrusion of the work 28, and 26 is a chip mount. For example, S0 is a mounting plane of the workpiece 28, S1 is a suction plane of the workpiece 28, S2 is a lowermost surface of the workpiece 28, S3 is an uppermost surface of the workpiece 28, and 25 and 29 are workpieces 28. This is a protrusion. Further, the optical system 2 is an optical system barrel, the optical system 2a is an eyepiece, the optical system 2b is a polarizing plate, the optical system 2c is an objective lens and a wave plate, the optical system 2d is a half mirror, the optical system 2e is a projection pattern, and optical The system 2f is a condenser lens. The illumination system 3 is ring illumination, the illumination system 4 is 2D coaxial illumination and diffuser, and the illumination system 5 is 3D coaxial illumination. Further, 11 is a camera-PC communication cable, 12 is a controller-PC communication cable, 13 is a drive-illumination communication cable, 14 is a 2D coaxial illumination cable, 15 is a ring illumination cable, 16 is an interlock cable, and 17 is a solenoid. 18 is a vertical movement axis cable, 19 is a power cable, and 20 is a 3D coaxial illumination cable. Furthermore, 41 to 46 are holes provided in the table 6.

  Hereinafter, an embodiment in which component library data in the thickness direction is acquired by the component library apparatus of the present invention will be described with reference to FIGS.

  First, the work 28 shown in FIG. 3 is a cross-sectional view schematically showing the XZ plane as a cross section. In the example of the workpiece (component) 28 shown in FIG. 3, the electrode 27 has the same height as the mounting plane S <b> 0 that is the same as the mounting surface of the printed board on which the workpiece 28 is mounted. Further, the workpiece 25 has a protrusion 25 below the mounting plane S0. Further, a protrusion 29 exists on the suction surface 26 above the workpiece above the suction plane S1. At this time, the difference between the suction plane S1 and the mounting plane S0 is the mounting thickness t of the workpiece 28, the difference between the mounting plane S0 and the workpiece lower surface S2 is the length Ut of the lower projection, the workpiece uppermost surface S3 and the workpiece lowermost surface S1. Is the total thickness T of the workpiece 28.

Next, in the component library apparatus 100 of the present invention shown in FIG. 1, the three-dimensional image is changed in focus by driving the stepping motor 8b of the optical system 2 by a stroke depending on the mounting thickness of the work 28, and using the SSF method. Generated.
The PC 23 displays the three-dimensional image obtained from the camera 1 on its display unit, supports it with a graphical interface so that the user can acquire necessary thickness data, and reflects it in the part library data.
At this time, in the case where it is impossible to stand by itself such that the projection 25 exists on the mounting plane S0 of the work 28, the three-dimensional image cannot be acquired correctly unless the installed table 6 is stabilized. Therefore, as shown in FIG. 4 (6), appropriate holes 41 to 46 are formed in the table 6 so that the protrusions 25 of the parts that cannot stand independently (work 28) are inserted. For example, holes 41 to 43 are provided in the table 6 as shown in the front sectional view of FIG. The horizontal direction and the lower side of the table 6 are not shown and are omitted.

The holes 41 to 46 provided in the table 6 as described above allow the mounting plane S0 and the table upper surface to be in horizontal contact (installation) even when the protrusions 25 below the work 28 are present. Stable on the table 6.
As a result, even if the protrusion 25 exists below the workpiece 28, the mounting thickness t from the mounting plane S0 to the suction plane S1 of the workpiece 28 can be measured. In addition, even when the protrusion 29 is above the workpiece 28, the three-dimensional image can be acquired correctly, and therefore the total thickness T can be measured.

  Next, the work 28 is turned upside down (upside down), and the suction surface 26 is set on the table 6. In this case, the protrusion 29 is inserted into any of the holes 41 to 46 provided in the table 6, and the suction plane S <b> 1 of the work 28 and the table upper surface can be brought into horizontal contact (installation). Stable on 6. As a result, the protrusion 25 exists above, and the thickness Ut from the mounting plane S0 to the protrusion end S2 of the protrusion 25 can be measured.

FIG. 4B is a schematic plan view of a part of the table 6 as viewed from above. For convenience, FIG. 4B shows a smaller scale than FIG. The holes 41 to 46 provided in the table 6 have the same hole diameter D, and the hole intervals BH are equally provided in the X direction and the Y direction. Further, the depth of the hole is set to be larger than the maximum expected thickness Ut of the workpiece 28. The hole interval BH may be different in the X (horizontal) direction and the Y (longitudinal) direction, and the shape of the hole is arbitrary such as a perfect circle, an ellipse, or a square, or a combination thereof.
In the case of the table 6 in FIG. 4B, the protrusion 25 of the work 28 is inserted into the holes 41, 43, 44 and 46. In this case, since the protrusions 25 are inserted every other hole arranged in the horizontal direction, the number of holes n in the table is 2.
Hereinafter, the same can be said for either the horizontal direction or the vertical direction of the table. However, since the description is complicated, only the horizontal (X) direction will be described. However, it is obvious that the projection 25 can be inserted by providing the hole of the present invention in either or both of the X direction and the Y direction, and the deformed part can be stably placed on the table.

Next, a relational expression indicating the correspondence strength of the table 6 will be described with reference to FIG.
5 (a) and 5 (b) are workpiece projection intervals that can be handled with a hole interval n of 1. FIG. In FIG. 5A, the distance (projection interval) BP between the left and right projections of the work 28 is a1, and in FIG. 5B, the distance between the projections on the left and right ends of the work 28 (projection). Interval) BP is b1. That is, the protrusion interval BP = a1 to b1.
5 (c) and 5 (d) are workpiece projection intervals that can be accommodated with a hole interval n of 2. FIG. In FIG. 5C, the distance (projection interval) BP between the left and right projections of the work 28 is a2, and in FIG. 5D, the distance between the projections on the left and right ends of the work 28 (projection). Interval) BP is b2. That is, the protrusion interval BP = a2 to b2.

Here, n is the number of hole intervals in the table 6 (where n is 1 or more), A is the diameter of the hole provided in the table 6, B is the hole interval, and C is the diameter of the largest portion of the projection 25 of the workpiece 28. Then, the upper limit value BPo and the lower limit value BPu of the protrusion interval BP of the workpiece 28 can be obtained using the following expressions (1) and (2).
BPo = n × B−A + C (1)
BPu = n × B + A−C (2)
The above formulas (1) and (2) will be described with reference to FIG.

6, for the sake of explanation, it is assumed that the hole diameter A of the table 6 is 6 [mm], the hole interval B of the table 6 is 7 [mm], and the protrusion diameter C of the workpiece 28 is 2.5 [mm].
When the number n of hole intervals in the table 6 is taken as a parameter, the protrusion interval BP of the workpiece 28 that can be handled by n = 1 is 3.5 [mm] to 10.5 [mm]. Further, the protrusion interval BP of the workpiece 28 that can be handled by n = 2 is 10.5 [mm] to 17.5 [mm]. Hereinafter, the protrusion interval BP is 17.5 [mm] to 24.5 [mm] when n = 3,..., And 80.5 [mm] to 87.5 [mm] when n = 12.
Thus, when the number of holes n in the table 6 increases, the protrusion interval BP of the work 28 that can be handled also increases.
Moreover, the protrusion interval BP of the work 28 that can be handled overlaps. For example, the protrusion interval BP of the workpiece 28 has the same upper limit of the protrusion interval when the hole interval number n = 3 of the table 6 and the lower limit of the protrusion interval when the hole interval number n = 2 of the table 6 are the same. . The hole diameter A of the table 6 satisfying this condition, the table 6 hole interval B, and the protrusion diameter C of the work 28 have the relationship of the following equation (3).
C <A-0.5 × B (3)
A plurality of types of tables 6 satisfying this relational expression are produced to enhance the ability of the table 6 for various workpieces 28.
As shown in FIG. 1, the table 6 is provided so as to be mounted on the sample stage 7. For this reason, it is possible to install various types of parts simply by replacing the table 6 on the sample stage 7.

Another embodiment of the table 6 is shown in FIG.
As shown in FIG. 7, it is possible to create a part library data by installing a plurality of irregularly shaped parts in one table. As a result, it is possible to provide a component library data creation device capable of installing irregularly shaped components having a plurality of types of protrusion intervals at a time.
In the above embodiment, the lower limit value of the protrusion interval when the hole interval number n = k is equal to the upper limit value of the protrusion interval when the hole interval number n = k + 1. However, for example, the hole interval of the table 6 is provided so that the lower limit value of the protrusion interval when the hole interval number n = k is larger than the upper limit value of the protrusion interval when the hole interval number n = k + 1. Thus, it becomes possible to install a number of irregular parts having a plurality of types of protrusions on a single table, and the degree of freedom to install the irregular parts on the table is determined.

Next, referring to FIG. 2, an embodiment of the operation procedure of the parts library data creation apparatus of the present invention will be described.
In FIG. 2, steps S23 to S28 are procedures for placing the work 28 on the table. Step S30 to step S35 are procedures for capturing images. Further, step S36 is a teaching procedure, step S37 is a recognition test procedure, step S38 is a data input procedure, and step S39 is a workpiece collection procedure.

  First, in step S21, the user automatically or manually turns on the parts library data creation apparatus of the present invention. In step S22, application software (for odd-shaped parts) is activated.

After the parts library data creation device is activated, an initialization operation such as a return to origin operation is executed in step S23.
In step S24, the table is moved to the work installation position.
In step S25, the safety door is opened. The safety door is provided on a cover (not shown) that prevents the user from accidentally entering the body or part of the drive unit of the apparatus main body as illustrated in FIG. It is provided for installation on the table.
In step S26, a work is installed. In the present apparatus, since part library data for deformed parts is currently created, it is assumed that a table for deformed parts is installed.
When the installation of the odd-shaped part (work) is finished, in step S27, the safety door is closed.
In step S28, autofocus is executed to focus the camera 1.

In step S29, it is determined whether new data is created or modified.
If the data of the 2D image is corrected, the process proceeds to step S30. In the case of new acquisition of 2D image, new acquisition of 3D image (deformed part), and data correction of 3D image (deformed part), the process proceeds to step S31.
In step S30, a 2D image is captured and the process proceeds to step S35.

In step S31, new acquisition of 2D image, new acquisition of 3D image (deformed part), or data correction of 3D image (deformed part) are executed, and the process proceeds to step S32.
In step S32, the mounting thickness t and the total thickness T are compared. If the mounting thickness t is equal to the total thickness T, the process proceeds to step S36, and if the mounting thickness t is not equal to the total thickness T, the process proceeds to step S33.
In step S33, the work is reversed (upside down) and placed on the table.
In step S34, the data of the 3D image (deformed part) is captured.
In step S35, the work is evacuated and the process proceeds to step S36. The retreating place is, for example, a position where the work can be taken out when the safety door is opened.

In the teaching procedure of step S36, shape data and thickness data (T, t, Ut) are acquired.
In the recognition test in step S37, only 2D parts are recognized and executed. If it is a 3D part, the process proceeds to step S38 without executing it.
In the data input in step S38, unset data (control / supply data) is input.
In the work collection in step S39, the safety door is opened, the work set on the retracted table is taken out and collected, and the flow of FIG. 2 is ended.

Further, referring to FIG. 8, the control block of the parts library data creation apparatus of the present invention will be described. In FIG. 8, the interface 83 is used instead of the various cables 11 to 20 described in FIG.
A CPU (Central Processing Unit) as the controller 10 controls the operation of the component library data creation device 100. The CPU 10 stores data in a ROM (Read Only Memory) 82 based on data stored in a RAM (Random Access Memory) 81. In accordance with the program, the X-axis motor 84X, the Y-axis motor 84Y, and the stepping motor 8a are controlled via the interface 83 and the drive system controller 9 in relation to various operations of the part library data creation device 100. Further, the CPU 10 controls other control systems 88 (for example, solenoids, lighting, etc.) via the interface 83.

The recognition processing device 85 is connected to the CPU 10 via the interface 83, performs recognition processing of an image captured and acquired by the camera 1, and outputs a processing result to the CPU 10. For example, the CPU 10 outputs an image captured by the camera 1 to the PC 23.
In the PC 23, the recognition processing device 85 performs recognition processing of the image input from the camera 1 and outputs the processing result to the CPU 10.
The image picked up by the camera 1 is displayed on a monitor 86 as a display device. The monitor 86 is provided with various touch panel switches 87, and the user can give various instructions by operating the touch panel switch 87.

According to the above-described embodiment, it is possible to shorten the time for creating the part library data of the irregularly shaped part or the part that cannot stand independently.
In addition, it has a table on which a large number of parts can be installed at a time, and a large number of odd-shaped parts for creating part library data can be installed at a time. As a result, it is possible to save the trouble of searching for the surface to be adsorbed so that the adsorption is stable. In addition, a plurality of similar parts can be arranged, and a three-dimensional image can be acquired collectively.

  The component library data creation device of the present invention is applicable not only to the component library data used in the electronic component mounting device but also to a three-dimensional processing device that recreates a component that cannot stand independently.

  DESCRIPTION OF SYMBOLS 1: Camera 2, 2a-2f: Optical system 3, 4, 5: Illumination system 6: Table 7: Sample stand 8a: Stepping motor 8b: Solenoid 9: Drive system controller 10: Controller 11-20: Various cables, 21: Interlock, 22: Connector for AC power supply, 23: PC, 25, 29: Projection, 26: Suction surface, 27: Electrode, 28: Workpiece, 41-46: Hole, 81 : RAM, 82: ROM, 83: Interface, 84X: X-axis motor, 84Y: Y-axis motor, 84Z: Z-axis motor, 85: Recognition processing unit, 86: Monitor, 87: Touch panel switch, 88: Other drive system , 90: Installation stand, 91: Table, 92: Suction nozzle, 93: Intake direction, 94: Camera, 95: Optical system, 9 : Work, 99: device main body, 100: component library device, S0: mounting plane, S1: adsorption plane, S2: lowest surface, S3: top surface.

Claims (4)

A table for installing the electronic component for creating the component library data of the electronic component, an optical system for passing a subject image of the electronic component installed on the table, and installed on the stage via the optical system A camera that captures a subject image of the electronic component, an optical system that can change a focal point position of the camera, and a recognition processing unit that recognizes an image captured by the camera and outputs a recognition processing result, In the component library data creation device that creates the component library data based on the recognition processing result,
A component library data creation device, wherein a hole having a predetermined size is formed in the table at a predetermined interval, and the protrusion of an electronic component having a protrusion below or above can be inserted.   2. The component library data creating apparatus according to claim 1, further comprising a drive system controller, wherein the optical system has a focus drive mechanism capable of changing a focus of the electronic component, and the drive system controller is configured to transmit the electronic component. The focus drive mechanism is controlled to change the focus of the electronic component by a stroke that depends on the thickness of the electronic component, and the camera captures the subject image with the changed focus and creates a three-dimensional image by the SSF method. The recognition processing unit creates component library data based on the three-dimensional image.   3. The part library data creation device according to claim 1, wherein the hole has a circular shape.   4. The component library data creation device according to claim 1, wherein a sample stage to which the stage is attached is provided, and a plurality of stages can be exchanged.

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