Rotation body workpiece positioning tool based on full-automatic imager

Abstract

The invention relates to the field of measuring devices for measuring contours or curvatures, in particular to a rotary workpiece positioning tool based on a full-automatic imager. The rotary body workpiece positioning tool based on the full-automatic imager comprises a connecting structure and a positioning structure, wherein the connecting structure is used for being connected to a workbench of the full-automatic imager so as to keep the position of the tool, and the positioning structure is used for positioning a to-be-detected workpiece and is at least provided with two positioning flanges which are arranged at an included angle. All the positioning flanges of the same positioning structure are used for abutting against the outer circle contour of a corresponding workpiece to be detected on the workbench so as to form positioning. The positioning tool provided by the invention provides a determined placement position for the to-be-detected workpiece, and the detection precision is not easy to reduce due to manual operation factors when a full-automatic imager is used for detecting the rotary workpiece.

Description

Technical Field

[0001] The invention relates to the field of measuring devices for measuring contours or curvatures, and in particular to a rotary workpiece positioning tool based on a full-automatic imager. Background Art

[0002] There are many flexible annular, circular and other rotating workpieces in the prior art, such as bearing seals made of rubber materials. When measuring the outer diameter size parameters of such flexible annular workpieces, contact measuring tools such as calipers and micrometers cannot be used. Contact measuring tools will cause deformation of the workpiece, resulting in inaccurate measurement results. Therefore, flexible annular workpieces are often inspected using non-contact detection instruments.

[0003] The prior art generally uses the following method to detect flexible annular workpieces: Figure 1 A fully automatic imager shown in the figure includes a detection table 704 and a glass workbench 701 and a detection frame 705 which are adjustably mounted on the detection table 704. The glass workbench 701 can be displaced in the front-to-back direction, and the detection frame 705 can be displaced in the left-to-right direction. The detection frame 705 is provided with two mounting arms arranged up and down and extending in the direction of the glass workbench 701. The glass workbench 701 is between the two mounting arms. The lower mounting arm is provided with a light source 703 facing upward, and the upper mounting arm is provided with a detection lens 702 facing downward and corresponding to the position of the light source 703.

[0004] During detection, the detection lens 702 will output the light of the light source 703 and the shadow outline of the annular workpiece to be tested to the computer screen, and manually select at least three light and dark junction points on the edge of the outer circle contour of the annular workpiece to be tested, and then fit the selected points into a circle, and output the size data of the fitted circle to complete the workpiece diameter detection; the fully automatic imager also has an automatic detection program. After manually detecting the first annular workpiece, the second annular workpiece is placed at the position of the first annular workpiece. The fully automatic imager will select light and dark junction points on the contour of the second annular workpiece within a certain range of the selected points of the first annular workpiece and fit them into a circle, and detect the diameter of the workpiece one by one.

[0005] However, the problem with the existing technology is that when the existing detection method performs individual detections, after the first workpiece is detected, the next workpiece is placed at the position of the previous workpiece by manual visual inspection. This is likely to result in a large position deviation, affecting the detection accuracy. Moreover, for a large number of workpieces, usually several workpieces are placed at one time. The inspection personnel need to manually inspect multiple workpieces to be tested placed on the glass workbench for the first batch, and then use an automatic detection program to automatically detect the next batch of ring-shaped workpieces. In this process, the inspection personnel need to place the workpieces to be tested in the second batch and subsequent batches at a position as consistent as possible with the workpieces to be tested in the first batch. Since the number of workpieces is large, manual visual inspection for workpiece positioning may cause the fully automatic imaging instrument to be unable to detect the light-dark boundary point within the set range, or may cause the fully automatic imaging instrument to select the wrong light-dark boundary point. For example, when detecting the outer diameter of the ring-shaped workpiece to be tested, due to the error in manual placement and positioning, the fully automatic imaging instrument wrongly selects the light-dark boundary point on the inner circle contour of the ring-shaped workpiece to be tested, ultimately resulting in data errors and poor detection accuracy. Summary of the Invention

[0006] The object of the present invention is to provide a positioning tooling for rotary workpieces based on a fully automatic imaging instrument, so as to solve the problem that the detection accuracy is poor due to manual operation factors when using a fully automatic imaging instrument to detect rotary workpieces in the existing technology.

[0007] To solve the above technical problems, the present invention provides a positioning tooling for rotary workpieces based on a fully automatic imaging instrument. The tooling includes a connection structure for connecting to the workbench of the fully automatic imaging instrument to maintain the position of the tooling, and a positioning structure for positioning the workpiece to be tested. The positioning structure has at least two positioning edges arranged at an angle. Each positioning edge of the same positioning structure is used to abut against the outer circle contour of the corresponding workpiece to be tested placed on the workbench to form a positioning.

[0008] Furthermore, the tooling includes at least two cross baffles and at least two longitudinal baffles. The cross baffles and the longitudinal baffles intersect and enclose a positioning grid. The positioning grid constitutes the positioning structure, and the parts of the cross baffles and the longitudinal baffles that enclose the positioning grid are used to form the positioning edges of the positioning structure.

[0009] Furthermore, each cross baffle and longitudinal baffle are arranged crosswise to form a mesh structure. The mesh structure has at least two rows of cells, and each cell forms a positioning grid.

[0010] Furthermore, the cross baffle and the longitudinal baffle are separately provided. At least one of the cross baffle and the longitudinal baffle is provided with more than two engaging grooves at intervals along its extending direction. The cross baffle and the longitudinal baffle are clamped through the engaging grooves to adjust the size of the positioning grid by changing the clamping position using the engaging grooves at different positions.

[0011] Further, the height of the horizontal baffle is the same as that of the vertical baffle, and there are more than two engaging grooves as described above on both the horizontal baffle and the vertical baffle. The intersection position of the horizontal baffle and the vertical baffle is the position where the corresponding engaging groove part of the horizontal baffle is clamped at the corresponding engaging groove of the vertical baffle.

[0012] Further, the tooling includes a support frame, and the end parts of the horizontal baffle and the vertical baffle are adjustably installed on the support frame, and the connecting structure is arranged on the support frame.

[0013] Further, there are more than two slots arranged at intervals on the frame edges of the support frame for installing the horizontal baffle and the vertical baffle. Plug blocks are provided at the ends of the horizontal baffle and the vertical baffle, and the plug blocks are used to be inserted into the corresponding slots and change the installation positions of the horizontal baffle and the vertical baffle on the support frame by cooperating with different slots.

[0014] Further, the tooling includes a support frame, and the end parts of the horizontal baffle and the vertical baffle are installed on the support frame, and the connecting structure is arranged on the support frame.

[0015] Further, the connecting structure includes a positioning post for cooperating with the positioning holes on the workbench.

[0016] Further, each positioning edge of the same positioning structure is formed by a transparent material with the same thickness.

[0017] Beneficial effects: The present invention pioneeringly provides a positioning tooling for a rotary workpiece based on a full-automatic imaging instrument. By setting a positioning tooling fixed relative to the workbench on the workbench of the full-automatic imaging instrument to position the workpiece to be measured, after the rotary workpiece to be measured is placed at the corresponding position on the workbench, through the abutting cooperation of each positioning edge forming an angle with the outer circle of the workpiece, each positioning edge forms a positioning reference to center the workpiece, so that the workpiece can have a definite placement position, which is convenient for the inspection personnel to accurately place all the second and subsequent workpieces in the same position as the first workpiece when using the automatic detection program to detect the rotary workpiece, improving the accuracy of the automatic detection program when detecting the rotary workpiece, and solving the problem that the detection accuracy is poor due to manual operation factors when using a full-automatic imaging instrument to detect a rotary workpiece in the prior art. Description of the drawings

[0018] Figure 1 is a schematic structural diagram of a full-automatic imaging instrument; Figure 2 is a schematic structural diagram of a positioning tooling for a rotary workpiece based on a full-automatic imaging instrument installed on the full-automatic imaging instrument; Figure 3 is Figure 2 the top view of Figure 4Schematic structural diagram of a positioning tooling for rotary workpieces based on a full-automatic imaging instrument; Figure 5 Schematic structural diagram of the cross baffle of a positioning tooling for rotary workpieces based on a full-automatic imaging instrument; Figure 6 Schematic structural diagram of the longitudinal baffle of a positioning tooling for rotary workpieces based on a full-automatic imaging instrument.

[0019] In the figure: 1. Longitudinal baffle; 2. Cross baffle; 3. Positioning grid; 4. Engaging groove; 5. Support frame; 6. Positioning column; 7. Full-automatic imaging instrument; 701. Glass workbench; 702. Detection lens; 703. Light source; 704. Detection table; 705. Detection frame; 8. Rotary workpiece to be measured; 9. Slot; 10. Insert block; 11. Avoidance groove. Specific embodiments

[0020] The technical solutions of the present invention will be further described in detail below in conjunction with embodiments.

[0021] The principle and concept of the present invention are that, based on the full-automatic imaging instrument in the prior art, a tooling for positioning rotary workpieces is designed. The positioning tooling forms a positioning structure in the form of a baffle above the workbench of the full-automatic imaging instrument, and positions the rotary workpiece to be measured through the positioning structure, so that the workpiece can have a definite placement position, which is convenient for the operator to place it in place and reduces the influence on the detection result.

[0022] Moreover, using a grid as the positioning structure, the rotary workpieces to be measured in the same batch are placed in the grid, and the baffle of the grid is used to position the rotary workpieces to be measured; the detection personnel manually detect each point of the first batch of rotary workpieces to be measured one by one, and then use the automatic detection program of the full-automatic imaging instrument to perform dimensional detection on the second batch and subsequent rotary workpieces to be measured, control the full-automatic imaging instrument to automatically perform a separate contour scan on each rotary workpiece to be measured in the grid, and obtain the diameter parameter of the rotary workpiece to be measured; at the same time, the roundness of the rotary workpiece to be measured can also be detected by using the positioning tooling of the present invention in cooperation with the full-automatic imaging instrument, realizing batch detection.

[0023] Based on the above principle and concept, the present invention provides a positioning tooling for rotary workpieces based on a full-automatic imaging instrument and various embodiments thereof for further explanation.

[0024] On the basis of the above principle, in a basic embodiment, as Figures 1-6 the provided embodiment, taking Figure 3The setting direction of the middle longitudinal baffle 1 is longitudinal, and the setting direction of the transverse baffle 2 is transverse; hereinafter, the "baffle" refers to the transverse baffle 2 and the longitudinal baffle 1; the positioning tooling for the rotary workpiece based on the full-automatic imaging instrument includes a connection structure for keeping the overall position of the tooling unchanged relative to the workbench of the full-automatic imaging instrument 7 (the full-automatic imaging instrument used in this embodiment adopts a glass workbench 701); it also includes a positioning structure for positioning the rotary workpiece to be measured, and this positioning structure has at least two positioning edges that abut against the outer circular contour of the rotary workpiece 8 to be measured, and the rotary workpiece 8 to be measured is positioned by the positioning edges of the same positioning structure.

[0025] The positioning tooling is set on the workbench of the full-automatic imaging instrument with a fixed position relative to the workbench to position the workpiece to be measured. After the rotary workpiece to be measured is placed at the corresponding position on the workbench, through the cooperation of the positioning edges at an angle with the outer circle of the workpiece, each positioning edge forms a positioning reference to center the workpiece, so that the workpiece can have a definite placement position, which is convenient for the inspection personnel to accurately place all the second and subsequent workpieces in the same position as the first workpiece when using the automatic detection program to detect the rotary workpiece, improving the accuracy of the automatic detection program when detecting the rotary workpiece, and solving the problem that the detection accuracy is poor due to manual operation factors when using the full-automatic imaging instrument to detect the rotary workpiece in the prior art.

[0026] The positioning tooling for the rotary workpiece based on the full-automatic imaging instrument provided by the present invention is integrally supported on the workbench, and the bottom surface of the tooling abuts against the upper surface of the workbench to ensure reliable abutment between the positioning edge and the workpiece; each positioning edge of the same positioning structure is made of a transparent material with the same thickness, and the baffle made of the transparent material will not produce a shadow during the detection process, avoiding the problem of incorrect measurement data caused by the automatic detection program wrongly selecting the light and dark intersection points on the baffle.

[0027] In addition, it should be noted that in this embodiment, the rotary workpiece 8 to be measured is a bearing seal ring. In other embodiments, the tooling provided by the present invention can also be used to cooperate with the full-automatic imaging instrument to detect rotary workpieces with a circular outer contour such as round shims, bearing inner rings, and bearing outer rings; in this embodiment, the positioning edges are two mutually perpendicular edges, and both edges abut against the outer peripheral surface of the bearing seal ring to position the bearing seal ring without deformation; in other embodiments, the positioning edges can be two edges whose extension lines intersect and are not perpendicular; it can also be a positioning edge composed of three or more edges that respectively abut against the outer circular contour of the bearing seal ring to be measured.

[0028] On the basis of the above embodiments, in one embodiment, as Figures 1-6In the provided embodiment, the tooling includes at least two cross baffles 2 and at least two longitudinal baffles 1. Both the cross baffles 2 and the longitudinal baffles 1 are transparent plates, which can be made of transparent plastic. The cross baffles 2 and the longitudinal baffles 1 intersect and enclose a positioning grid 3. The positioning grid 3 constitutes the above-mentioned positioning structure. The parts of the cross baffles 2 and the longitudinal baffles 1 that enclose the positioning grid 3 constitute the positioning edges for positioning the to-be-tested rotary workpiece 8. The structure is simple and convenient to manufacture. In another embodiment, an L-shaped block can also be fixedly installed on the workbench of the full-automatic imaging instrument to position the to-be-tested rotary workpiece. The two mutually perpendicular sides of the L-shaped block constitute two positioning edges at a right angle.

[0029] Based on the above embodiment, in one embodiment, as Figures 2-6 In the provided embodiment, there are multiple cross baffles 2 and multiple longitudinal baffles 1 respectively. Each cross baffle 2 and each longitudinal baffle 1 are arranged crosswise and form a mesh structure. The mesh structure has at least two rows of cells, and each row has multiple cells. Each cell constitutes one of the above-mentioned positioning grids 3. The cross baffles 2 and the longitudinal baffles 1 intersect perpendicularly. The positioning grid 3 is a square grid. The two adjacent perpendicular sides of the positioning grid 3 constitute the positioning edges for positioning the workpiece within the positioning grid.

[0030] Multiple positioning structures are arranged on the workbench of the full-automatic imaging instrument 7 to position the rotary workpiece, determining the detection positions of the second batch and subsequent rotary workpieces, providing a positioning basis for the large-scale detection of rotary workpieces using the automatic detection program of the full-automatic imaging instrument 7. It only requires the inspection personnel to manually detect the to-be-tested rotary workpieces 8 of the first batch and place the to-be-tested rotary workpieces 8 of subsequent batches in the same position as the to-be-tested rotary workpieces 8 of the first batch to achieve rapid detection and improve the batch detection efficiency. In other embodiments, only two cross baffles and two longitudinal baffles can also be set, thereby forming one positioning grid for single-piece sequential detection; or two longitudinal baffles and multiple cross baffles can be set to form only one row of positioning grids.

[0031] The planar size of the positioning grid 3 is not less than the area of the outer circular contour of the to-be-tested rotary workpiece 8. When placing the to-be-tested rotary workpiece 8, the to-be-tested rotary workpiece 8 is biased towards a corner of the positioning grid 3, and the two positioning edges at the corner of the positioning grid 3 are used to position the to-be-tested rotary workpiece 8.

[0032] Based on the above embodiment, in one embodiment, as Figures 1-6In the provided embodiments, the cross baffle 2 and the longitudinal baffle 1 in the above embodiments are of a split structure. At least two engaging grooves 4 are provided on the cross baffle 2 and the longitudinal baffle 1 at intervals along their extending directions. The engaging grooves 4 on the cross baffle 2 are for the longitudinal baffle 1 to be adaptively snapped into, and the engaging grooves 4 on the longitudinal baffle are for the cross baffle 2 to be adaptively snapped into, so that the cross baffle 2 and the longitudinal baffle 1 intersect and enclose a positioning grid 3. By using the engaging grooves 4 at different positions, the snapping positions of the cross baffle 2 and the longitudinal baffle 1 can be changed, and by adjusting the snapping positions of the cross baffle 2 and the longitudinal baffle 1, the size of the positioning grid 3 can be changed. The positioning grid 3 arranged in this way can be flexibly adjusted according to the size of the workpiece 8 of the rotary body to be measured; in another embodiment, the cross baffle and the longitudinal baffle of the mesh structure can also be integrally formed. The integrally formed structure has higher structural strength, is not easily damaged, and is also convenient for manufacturing.

[0033] Based on the above embodiments, in one embodiment, as Figures 1-6 In the provided embodiments, the cross baffle 2 and the longitudinal baffle 1 have the same height. The depth of the engaging groove 4 is half of the height of the baffle, the width of the engaging groove 4 is the same as the thickness of the baffle, and the thickness of the cross baffle 2 is the same as the thickness of the longitudinal baffle 1. The engaging grooves on the cross baffle 2 and the longitudinal baffle 1 are one facing up and the other facing down. The intersection position of the cross baffle 2 and the longitudinal baffle 1 is the position where the corresponding engaging groove part of the cross baffle 2 is snapped onto the corresponding engaging groove of the longitudinal baffle 1, that is, the engaging groove of the cross baffle 2 is snapped onto the part directly corresponding to it in the height direction of the corresponding engaging groove of the longitudinal baffle 1, and the engaging groove of the longitudinal baffle 1 is snapped onto the part directly corresponding to it in the height direction of the corresponding engaging groove of the cross baffle 2. After the cross baffle 2 and the longitudinal baffle 1 are snapped together, the bottom of the engaging groove of the longitudinal baffle 1 abuts against the bottom of the engaging groove of the cross baffle 2. After the cross baffle 2 and the longitudinal baffle 1 are correspondingly inserted into each other in this way, the finally formed mesh structure has the same height as the cross baffle 2 and the longitudinal baffle 1, the upper and lower surfaces are flush, and the overall shape is neater, which is convenient for being abutted against the upper surface of the workbench; of course, in another embodiment, the engaging groove can also be provided only on one of the cross baffle and the longitudinal baffle. The engaging groove arranged in this way has a larger depth, and correspondingly, the baffle provided with the engaging groove has a higher height.

[0034] Based on the above embodiments, in one embodiment, as Figures 1-6 In the provided embodiments, the positioning tooling provided by the present invention further includes a support frame 5. The support frame 5 is a rectangular frame with four side frame edges. Two ends of the cross baffle 2 are respectively installed on the two laterally opposite side frame edges, and the longitudinal baffle 1 is installed on the two longitudinally opposite side frame edges. The cross baffle 2 and the longitudinal baffle 1 are both adjustably installed on the support frame 5. A connecting structure for connecting to the workbench is provided on the support frame 5. By using the support frame 5, the strength of the mesh structure can be improved, and at the same time, it can adapt to the position adjustment of the baffle. In other embodiments, the support frame can also be not provided, but a connecting plate can be provided. The connecting plate is adjustably connected to the same end of each longitudinal baffle, and the connecting structure is provided on the connecting plate.

[0035] Based on the above embodiments, in one embodiment, as Figures 1-6 in the provided embodiment, on the frame edges of the support frame 5 for installing the horizontal baffle 2 and the vertical baffle 1, slots corresponding to the horizontal baffle 2 and the vertical baffle 1 are provided. A plurality of slots 9 are arranged at intervals along the frame edge on each side frame edge. The slots 9 penetrate up and down. On the horizontal baffle 2 and the vertical baffle 1, insertion blocks 10 adapted to the shape of the slots 9 are provided. Insertion blocks 10 are provided at both ends of the baffle. By inserting the horizontal baffle 2 and the vertical baffle 1 into different slots 9, the position adjustment of the horizontal baffle 2 and the vertical baffle 1 can be adapted. An avoidance groove 11 adjacent to the insertion block 10 is provided at the end of the baffle. The horizontal baffle 2 and the vertical baffle 1 are inserted into the corresponding slots 9 from top to bottom so that the insertion blocks 10 do not protrude to the lower side of the slots 9. The avoidance groove 11 avoids the part of the frame edge of the support frame 5 located inside the slots 9, so that the lower surface of the support frame 5 can be flush with the lower surface of the baffle, which is beneficial for the tooling to be placed flat on the workbench.

[0036] Based on the above embodiments, in one embodiment, as Figures 1-6 in the provided embodiment, the above connection structure includes positioning columns 6 provided at the bottom of the support frame 5 and positioning holes provided on the workbench of the full-automatic imaging instrument 7 and adapted to the shape of the positioning columns 6; the positioning columns 6 can be at least two cylinders; or at least one non-circular column body, such as a square column. When placing the tooling, the positioning columns 6 are inserted into the positioning holes on the workbench from top to bottom, and the two positioning columns 6 are used to prevent the tooling from yawing relative to the workbench and maintain its position relative to the workbench.

[0037] The above is only the preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention is subject to the claims. All equivalent structural changes made by using the description and drawings of the present invention should be included in the protection scope of the present invention by the same token.

Claims

1. A positioning tooling for rotary workpieces based on a full-automatic imaging instrument, characterized in that The tooling includes a connection structure for connecting to the workbench of a full-automatic imaging instrument to maintain the position of the tooling and a positioning structure for positioning the workpiece to be measured. The positioning structure has at least two positioning edges arranged at an angle. Each positioning edge of the same positioning structure is used to abut against the outer circle contour of the corresponding workpiece to be measured placed on the workbench to form a positioning.

2. The positioning tooling for the rotary workpiece based on the full-automatic imaging instrument according to claim 1, characterized in that, The tooling includes at least two cross baffles and at least two longitudinal baffles. The cross baffles and the longitudinal baffles intersect and enclose a positioning grid, and the positioning grid constitutes the positioning structure. The parts of the cross baffles and the longitudinal baffles that enclose the positioning grid are used to form the positioning edges of the positioning structure.

3. The positioning tooling for a rotary workpiece based on a full-automatic imaging instrument according to claim 2, characterized in that, Each cross baffle and longitudinal baffle are arranged crosswise to form a mesh structure. The mesh structure has at least two rows of cells, and each cell forms a positioning grid as described above.

4. A positioning tooling for rotary workpieces based on a full-automatic imaging instrument according to claim 2 or 3, characterized in that, The cross baffles and the longitudinal baffles are separately arranged. At least one of the cross baffles and the longitudinal baffles is provided with more than two engaging grooves at intervals along its extending direction. The cross baffles and the longitudinal baffles are clamped through the engaging grooves to adjust the size of the positioning grid by changing the clamping position with different engaging grooves.

5. The positioning tooling for a rotary workpiece based on a full-automatic imaging instrument according to claim 4, characterized in that, The cross baffles and the longitudinal baffles have the same height. More than two of the above-mentioned engaging grooves are provided on both the cross baffles and the longitudinal baffles. The intersection position of the cross baffles and the longitudinal baffles is the position where the corresponding engaging groove parts of the cross baffles are clamped at the corresponding engaging grooves of the longitudinal baffles.

6. A positioning tooling for a rotating workpiece based on a full-automatic imaging instrument according to claim 5, characterized in that, The tooling includes a support frame. The ends of the cross baffles and the longitudinal baffles are adjustably installed on the support frame, and the connection structure is arranged on the support frame.

7. A positioning tooling for rotary parts based on a full-automatic imaging instrument according to claim 6, characterized in that, More than two slots are spacedly arranged on the frame edges of the support frame for installing the cross baffles and the longitudinal baffles. Plug blocks are provided at the ends of the cross baffles and the longitudinal baffles. The plug blocks are used to insert into the corresponding slots and change the installation positions of the cross baffles and the longitudinal baffles on the support frame by cooperating with different slots.

8. A positioning tooling for rotary workpieces based on a full-automatic imaging instrument according to claim 2 or 3, characterized in that, The tooling includes a support frame. The ends of the cross baffles and the longitudinal baffles are installed on the support frame, and the connection structure is arranged on the support frame.

9. A positioning tooling for rotary workpieces based on a full-automatic imaging instrument according to claim 1 or 2 or 3, characterized in that, The connection structure includes a positioning post for cooperating with the positioning hole on the workbench.

10. A positioning tooling for rotary workpieces based on a full-automatic imaging instrument according to claim 1 or 2 or 3, characterized in that, Each positioning edge of the same positioning structure is formed of a transparent material with the same thickness.

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