This application is a national phase application of PCT/IB2019/053078, filed Apr. 15, 2019, which claims the benefit of Swiss Patent Application No. 00485/18, filed on Apr. 17, 2018 and Swiss Patent Application No. 01158/19, filed on Sep. 24, 2018. The entire contents of those applications are hereby incorporated by reference.
The present invention relates to a modular device for positioning solutions, for controlling the dimensions and appearance of small parts, by means of manual or automated control apparatuses.
Quality control of products, in a laboratory or during their manufacture, often involves an inspection by means of an optical control apparatus. For example, optical control apparatuses of the following types are known:
Depending on the shape of the parts, the geometries to be controlled and also the type of machine used, various methods for positioning the part on the machine are frequently implemented:
Positioning supports are frequently used for positioning the parts to be inspected during their inspection by means of an optical inspection apparatus. The known supports are not very flexible and are generally dedicated to one type of machine. They are also generally dedicated to one type of part and offer little flexibility for the positioning of parts of varying shapes. They allow either free positioning or aligned positioning, but generally not both. Finally, the adjustment possibilities for precise positioning of the parts to be inspected, or of each individual part, are limited.
It is an object of the present invention to make available a positioning support for positioning parts during their inspection, which support does not have the limitations of the known supports.
Another object of the invention is to make available a support that is versatile, both in terms of machine compatibility and in terms of the variety of parts to be measured and the possible positions.
Another object of the invention is to make available a support having interchangeable and combinable elements, in order to permit placement configurations that are adapted to varied and complex parts and to optical inspection needs.
Another object of the invention is to make available a support having interchangeable elements in order to permit complex adjustments.
Another object of the invention is to make available a support with which it is possible to increase the quantity of parts that can be positioned per placement.
Another object of the invention is to make available a support that ensures a high degree of precision and repeatability of the positionings.
According to the invention, these objects are achieved in particular by means of a positioning support for the positioning of components to be inspected during their inspection by means of an optical control apparatus, having:
a casing base serving as interface between the optical control apparatus;
a sliding base able to slide along an axis “Y” in a plane of the casing base perpendicular to the optical axis;
a plate able to slide along an axis “X” perpendicular to the axis “Y” in a plane parallel to said plane of the sliding base;
templates or bars for positioning a plurality of components to be measured on said plate.
The components to be measured can be maintained in place by means of holding elements, which are themselves positioned on the plate.
Examples of implementation of the invention are set forth in the description and illustrated by the accompanying figures, in which:
An example of a support 1 is illustrated in
Casing Base 3:
(
Casing bases 3 can be replaced in order to adapt to different control apparatuses. Different casing bases can be made for different types of apparatuses.
Sliding Base 5 (
serves as an interface between the casing base 3 and the sliding plate 7. It has the function of sliding along a direction “Y” in the plane of the casing base, that is to say a plane passing through the sliding base perpendicular to the optical axis 12 (
The sliding base 5 has a frame 50 provided with flaps 51, 52 which serve as slide rails. The lower flaps 51, which deploy on the axis “Y”, serve to slide along the casing base 3. The upper rails 52, which deploy along the axis “X”, serve for the sliding of the sliding plates 7. Magnets 53, 54, 55 for indexing sliding counter-elements 3, 7 are housed at the center of each of the folded zones or rails, in seats provided for this purpose and visible in
It is also possible to replace the flaps 51 with slides on the casing base, in which the frame 50 slides. Similarly, it is possible to replace the flaps 52 with slides on the plate 7, in which the frame 50 slides.
Sliding Plate 7 (
permits sliding along the axis “X” perpendicular to X in the plane of the sliding base 5. It serves for placing there the parts 9 that are to be measured. Different types of interchangeable plates can be mounted on the sliding base 5, depending on the type of positioning, i.e. free or aligned. The size of the plate is advantageously between 13×13 cm and 24×24 cm, for example 15×18 cm. The sliding plates are composed of several levels, preferably four levels. Each level can accommodate different types of components to be selected depending on the desired type of positioning and depending on the complexity of the parts that are to be controlled.
The first level corresponds to the plate base 71 (
The second level corresponds to the plate frame (
The third level corresponds to the covers of the plate frame (
The fourth level corresponds to the lateral assembly blocks “Z”. The upper part 741 serves to guide, index, fix or serve as support for the various elements of the Z adjustment system (such as: Z adjustment screws, the stress springs of the longitudinal base bars, the end pieces and caps for engaging and screwing of the Z adjustment screws) and the elements of the lateral belt system. The lower part 742 serves to complete and close the upper part of the lateral plate block, especially when the latter is configured with the synchronous Z adjustment system with lateral belts. The metric plate lateral cover 743 serves to indicate the Z displacement distance of the base longitudinal bars.
In the case of free positioning (
The recovery of the parts placed on the glass panel can be done in bulk, by removing the segmentation template 713 and leaving the parts to slide through a space 718 (
In the case of an aligned positioning (
The plate base 71 (
The plate frame 72 (
Longitudinal bars 15 are mounted on the plate 7, for example by being screwed into the lateral covers 733 (
The alignment elements, in particular the slats 17, make it possible to keep in place the components 9 that are to be inspected visually. They are adjustable in Z (height), in particular by means of rotary pushers with knurled end-pieces 43, which are controlled by the mounting screws, allowing manual adjustment of the height Z. For this reason, the adjustment of the longitudinal bars to different heights makes it possible to correct the positioning of the unbalanced parts.
The slatted tensioning transverse bars 19 (
The magnetic transverse bars 21 (
The transverse bars with points 23 (
The alignment elements are also adjustable in X (length). For this reason, the adjustment of the bars to different distances permits precise positioning of the support zone of the parts.
The alignment elements are also adjustable in Y (depth). For this reason, the alignment of the axis of the positioning zones of the various bars can be finely adjusted and ensured.
The alignment elements are also adjustable in inclination with respect to the axis Z (perpendicularity to the axis). For this reason, the perpendicular alignment of the various holding elements, slats, magnets, gauges, abutment can be finely adjusted and secured.
Alignment elements 47 permit a rotation (
Each alignment element can accommodate or align one or more components, for example up to 10 components.
For balancing a part (or a row of parts) on slats, a minimum of 2 slats adjusted to two different heights can be provided. This is then designated as a set of slats, supported by two pairs of bars.
The alignment plates can accommodate multiple sets of longitudinal bars, slats or transverse bars.
The alignment plates make it possible to use up to twelve different bars per positioning set for a row of parts. This allows one part to be held and aligned at six different locations per part, ensuring not only the repeatability of the positioning in Z but also X and Y.
Each type of slat can be adjusted to different XYZ positions.
Each of these sets of slats or transverse bars can be multiplied over the available length of longitudinal bars of the alignment plate.
By using more than 2 pairs of longitudinal bars, it is possible to align the parts with abutments 18 (
The bar system is advantageously equipped with accessories (indexes) to identify the numbering of the parts that are in the course of being measured and their acceptance status (or measurement result) while the parts are still on plate.
The alignment plates are supplemented by receptacle covers adapted to each plate for recovery of the parts in one operation (and not part by part), still ensuring the traceability of numbering or segmentation of parts as on the plates.
Cap (CAP):
serves to recover the measured parts with or without compartmentalization. In the case of a free positioning, the recovery of the parts after control is effected by means of a recovery cap engaged on the plate which can be reversed so that the parts fall into the cap. Depending on the requirements, the caps can also contain a replica of the template in order to respect the same distribution of the parts as on the plate. The caps can be lined with damping material such as a thin foam or flexible plastic material.
Alignment Base (SDA) (
table base having a plate-holding frame 341, an inclined lower plate 342 and a receptacle for the fallen parts 343. It serves to maintain the sliding plates when aligning the parts and as a support for the operator(s) when placing the parts in position. Any fallen pieces are automatically recovered in longitudinal trays 26 (
According to an independent aspect of the invention, software is advantageously provided for indicating where to place the bars and how to adjust them. The software allows the user to determine how to equip the plate, and in particular which elements (bars, alignment elements, pads, etc.) are needed to inspect parts of a given shape, and how these elements should be placed. It also advantageously makes it possible to manage the stock of these components held by a user, for example by determining which element is available and which other element is already mounted on a support among the different supports equipped by the user. By inputting certain basic data concerning the part to be inspected, for example its total length, its diameter 1, its diameter 2, the bearing distance of the first bar and the bearing distance of the second bar, an automatic calculation is performed to indicate the total number of sets that can be placed on the plaque and the exact location “X” of each bar (and also of the successive bars of the plaque) and also the exact height “Z” of each bar. The software advantageously takes account of the user's machine, and in particular its viewing zone, in order to optimize the placement of the elements on a plate.
The system composed of plate, sliding base and casing base can reproduce the operation of a compound sliding table and thus work in palletization, hence with a larger quantity of parts than the base of the machine can initially accommodate.
The system composed of plate and sliding base is provided with a step-by-step movement function which makes it possible to move from one part to another or from one row of parts to another at regular and repeatable steps.
The fact that the alignment plates are interchangeable allows them to be dedicated to a product for its lifetime (production), without having to change the setting each time a part to be controlled is changed.
For all the parts having a flat bearing surface ensuring a perpendicularity to the axis of the optics without support means, the measurement can be performed by pouring them directly onto a control surface. This is referred to as bulk measurement. This system is essentially adapted to the full-field detection mode, in particular in the case of camera-based measuring machines with computer processing of the image.
In this case of bulk measurement, the support advantageously has the following main components:
In addition to its low cost, this bulk measurement system makes it possible to take full advantage of the full-field measurement methods and to increase the number of parts that are controlled.
Number | Date | Country | Kind |
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00485/18 | Apr 2018 | CH | national |
01158/18 | Sep 2018 | CH | national |
Filing Document | Filing Date | Country | Kind |
---|---|---|---|
PCT/IB2019/053078 | 4/15/2019 | WO |
Publishing Document | Publishing Date | Country | Kind |
---|---|---|---|
WO2019/202466 | 10/24/2019 | WO | A |
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Entry |
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International Search Report for PCT/IB2019/053078, dated Jul. 30, 2019, 12 pages. |
Number | Date | Country | |
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20210140873 A1 | May 2021 | US |