Positioning detection device for heterogeneous workpieces and detection method thereof

Abstract

The present application relates to a kind of positioning detection device for heterogeneous workpiece, comprising: structure panel, X direction movable scale and Y direction movable scale;Structure panel is based on the appearance and structure of the heterogeneous workpiece to be detected and is made into the flexible structure panel body that can be fitted with the outer wall profile of the heterogeneous workpiece to be detected after bending, flexible structure panel body is provided with scale graduation on the generatrix and axial direction, and flexible structure panel body is provided with side limiting strip and end limiting strip along the two sides of generatrix and the two ends of axial direction respectively;X direction movable scale is slidably fitted on the outer surface of structure panel by side limiting strip;Y direction movable scale is slidably fitted on the outer surface of structure panel by end limiting strip.The present application also discloses a kind of positioning detection method for heterogeneous workpiece.

Description

Technical Field

[0001] This invention relates to the field of measurement technology, specifically to a positioning device for detecting heterogeneous workpieces, particularly for large and medium-sized structural workpieces with a diameter greater than φ500mm, a length greater than 600mm, and a certain thickness. Background Technology

[0002] Currently, in recent years, machining technology has developed rapidly, machining capabilities have continuously improved, and large and medium-sized structural workpieces are emerging in large numbers. These workpieces have a diameter greater than φ500mm and a length greater than 600mm, with complex internal structures. Due to structural interference, measurements cannot be taken from within the workpiece during inspection. Therefore, external inspection is considered. However, because workpieces vary in shape and structure, have a certain thickness, and are made of opaque metal or non-metal materials, the location and size of internal ribs, windows, bosses, partitions, and supports must be considered during inspection. Currently, the method of visual inspection combined with a steel ruler is used to roughly determine the inspection location. This measurement method cannot accurately measure the inspection location, inevitably affecting product quality. No suitable inspection tools have been found in the existing technology to locate and measure the inspection location.

[0003] Therefore, in order to solve the problems existing in the above-mentioned prior art, it is urgent to propose a positioning device for the detection of large and medium-sized workpieces, so as to solve the problem of positioning and measuring workpieces with different structures and a certain thickness from the outside of the workpiece. Summary of the Invention

[0004] This invention specifically proposes a positioning device for detecting large and medium-sized workpieces, in order to solve the problem of positioning and measuring workpieces with different structures and a certain thickness from the outside of the workpiece.

[0005] To achieve the above objectives, embodiments of the present invention provide a positioning and detection device for heterogeneous workpieces, comprising:

[0006] The structural panel is a flexible structural panel body made based on the shape and structure of the heterogeneous workpiece to be tested. It can be bent to fit the outer wall contour of the heterogeneous workpiece to be tested. The flexible structural panel body is provided with scale lines along the generatrix and axis, and side limiting strips and end limiting strips are respectively provided on both sides of the generatrix and both ends of the axis.

[0007] The X-axis movable ruler is slidably attached to the outer surface of the structural panel via a side limiting strip;

[0008] The Y-axis movable ruler is slidably attached to the outer surface of the structural panel via an end limit strip.

[0009] Preferably, the above-mentioned structural panel further includes:

[0010] The shapes of the multiple irregularly shaped through holes are designed to match the external irregular structure of the workpiece under test; or / and

[0011] Multiple rib-like structures are designed to match the external protruding ribs of the heterogeneous workpiece to be tested.

[0012] Preferably, the two sides of the above-mentioned structural panel in the direction of the busbar are connected by an elastic locking assembly. The elastic locking assembly includes an elastic connecting plate and a locking buckle, which passes through a round hole provided on the structural panel and is fastened to the elastic connecting plate.

[0013] Preferably, when the above-mentioned heterogeneous workpiece to be tested is cylindrical in shape, the structural panel is cylindrical in shape after bending, and the X-axis movable scale is circular and attached to the structural panel.

[0014] Preferably, when the above-mentioned heterogeneous workpiece to be tested is conical in shape, the structural panel is bent into a frustum shape, and the X-axis movable scale is set in a conical ring shape and attached to the structural panel.

[0015] Preferably, the X-axis movable scale includes a main scale and a secondary scale with two pull-out structures. During detection, as the diameter of the heterogeneous workpiece changes, the main scale and the secondary scale move relative to the outer surface of the heterogeneous workpiece.

[0016] Preferably, the inner side of the main ruler is provided with multiple slots with beveled protrusions for locking when pulled out; the secondary ruler is correspondingly provided on the inner side of the main ruler, and the outer side of the secondary ruler is provided with multiple reverse beveled protrusions corresponding to the slots of the main ruler, and the main ruler and the secondary ruler are fixed by a clip.

[0017] Preferably, the width of the main scale is greater than the width of the secondary scale, with the main scale measured in 1mm units and the secondary scale measured in 0.1mm units.

[0018] This invention also provides a positioning and detection method for heterogeneous workpieces, employing the positioning and detection device for heterogeneous workpieces as described above, the method comprising:

[0019] Step 1: Wrap the structural panel around the outer surface of the heterogeneous workpiece to be inspected;

[0020] Step 2: Select any point on the heterogeneous workpiece to be inspected. On the structural panel, move the movable scale in the X direction along the side limit bar and the movable scale in the Y direction along the end limit bar to the inspection position.

[0021] Step 3: During the inspection, the X-axis movable scale moves relative to the outer surface of the heterogeneous workpiece. The X-axis scale value of the X-axis movable scale is read, and the offset angle of the inspected position is calculated based on the X-axis scale value.

[0022] Step 4: Read the distance from the movable Y-axis ruler to the zero coordinate position as the height of the detected position, thus completing the positioning detection of the detected position.

[0023] Preferably, step three above includes:

[0024] During inspection, when the workpiece to be inspected is a cone, the main scale and the auxiliary scale of the movable scale in the X direction move relative to the outer surface of the workpiece. The scale value L1 of the main scale and the scale value L2 of the auxiliary scale are read. The sum of L1 and L2 is the arc length of the circle formed by the main scale and the auxiliary scale. The offset angle of the inspected position is calculated based on the arc length of the circle.

[0025] The calculated offset angle of the detected position is: 180*L / (πr), where L is the arc length of the circle and r is the radius of the circle.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] 1) The device of the present invention has a simple structure and is easy to operate;

[0028] 2) The positioning device for detection disclosed in this invention can be designed as a flexible structural panel according to different shapes and internal structures of the workpiece, which can completely fit the outer contour of the workpiece to show different internal structures. At the same time, it can be used in conjunction with a movable and adjustable scale to locate any position of the workpiece, thereby performing detection and measurement. Attached Figure Description

[0029] Figure 1 This is a structural diagram of the column body according to a specific embodiment of the present invention;

[0030] Figure 2 This is a structural diagram of the column structure panel of a specific embodiment of the present invention;

[0031] Figure 3 This is a structural diagram of a movable scale in the X direction of a column according to a specific embodiment of the present invention;

[0032] Figure 4 This is a structural diagram of a movable scale in the Y direction of a column according to a specific embodiment of the present invention;

[0033] Figure 5 This is a structural diagram of the column connecting plate according to a specific embodiment of the present invention;

[0034] Figure 6 This is a structural diagram of the cone-shaped body according to a specific embodiment of the present invention;

[0035] Figure 7 This is a structural diagram of the cone-shaped panel according to a specific embodiment of the present invention;

[0036] Figure 8 This is a structural diagram of a movable scale in the X direction of a cone, according to a specific embodiment of the present invention.

[0037] Figure 9 This is a structural diagram of a cone-shaped movable scale in the Y direction, according to a specific embodiment of the present invention.

[0038] Figure 10 This is a structural diagram of the cone-shaped connecting plate according to a specific embodiment of the present invention;

[0039] Figure 11 This is a diagram of the locking structure according to a specific embodiment of the present invention.

[0040] The following diagram illustrates:

[0041] 1. Structural panel, 2. X-movable scale, 3. Y-movable scale, 4. Zero position, 5. Scale line, 6. Connecting plate, 7. Lock, 8. Circular window, 9. Ring rib, 10. Square boss. Detailed Implementation

[0042] The technical solutions in specific embodiments of the present invention will now be described in detail and completely with reference to the accompanying drawings. Obviously, the described embodiments are only some specific implementations of the overall technical solution of the present invention, and not all implementations. Based on the overall concept of the present invention, all other embodiments obtained by those skilled in the art fall within the protection scope of the present invention.

[0043] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0044] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0045] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0046] The positioning and detection device proposed in this invention disassembles the workpiece into individual structural components to accommodate different workpiece shapes. It analyzes the different internal structures of the workpiece, selects and determines reasonable locations for cutting and unfolding the workpiece, and designs and creates an internal unfolded diagram using 3D software. This diagram shows bosses, windows, ribs, holes, etc., in their correct theoretical positions, revealing all internal structures. A reference axis is set for the designed unfolded diagram, and a ruler is designed based on this axis. Positioning is achieved by moving the ruler. By analyzing the different shapes of the workpiece and disassembling it into individual structures according to its components, a reference axis and outer generatrix are determined for each individual structure. Considering the different internal structures, the positions of ribs, partitions, bosses, windows, etc., are drawn using 3D modeling software Solidworks, and an internal structural diagram is designed. The workpiece is then cut and unfolded along the generatrix at reasonable locations to form an unfolded planar diagram, clearly marking the corresponding areas and positions of windows, ring ribs, bosses, etc., thus creating a structural panel.

[0047] This invention provides a positioning and detection device for heterogeneous workpieces, such as... Figure 1 and Figure 2 As shown, it includes: structural panel 1, X-axis movable scale 2 and Y-axis movable scale 3;

[0048] The structural panel 1 is a flexible structural panel 1 made based on the shape and structure of the heterogeneous workpiece to be tested. After bending, it can fit the outer wall contour of the heterogeneous workpiece to be tested. The flexible structural panel 1 has scale lines 5 along the generatrix and axis direction, and side limiting strips 11 and end limiting strips 12 are respectively provided on both sides of the generatrix and both ends of the axis direction.

[0049] like Figure 3 and Figure 4 As shown, the X-axis movable ruler 2 is slidably attached to the outer surface of the structural panel 1 via the side limiting strip 11; the Y-axis movable ruler 3 is slidably attached to the outer surface of the structural panel 1 via the end limiting strip 12.

[0050] The structural panel 1 further includes: multiple irregular through holes 8 and / or multiple rib structures 9; the shape of the multiple irregular through holes 8 or 10 is set to match the external irregular structure of the workpiece to be tested; the multiple rib structures 9 are set to match the external protruding ribs of the workpiece to be tested.

[0051] like Figure 5 As shown, the two sides of the structural panel 1 in the direction of the busbar are connected by an elastic locking assembly. The elastic locking assembly includes an elastic connecting plate 6 and a locking buckle 7. The locking buckle 7 passes through a round hole provided on the structural panel 1 and is fastened to the elastic connecting plate 6.

[0052] 1) such as Figure 1As shown, when the heterogeneous workpiece to be inspected is cylindrical in shape, the structural panel 1 is bent into a cylindrical shape, and the movable scale 2 in the X direction is in a ring shape and is attached to the structural panel 1.

[0053] The structural panel 1 features a circular design, with limiting strips 11 and 12 on both sides and ends to limit the extreme sliding positions of scales 2 and 3. A sliding groove is designed on one side of each limiting strip 11 and 12 to facilitate scale sliding. Evenly distributed circular holes are made along the arc direction of the structural panel 1, near the limiting strips, and connect to the connecting plate 6 via latches 7. The connecting plate 6 is designed with an arc shape to follow the workpiece's contour, ensuring a tight fit between the panel outline and the workpiece's outer skin. Figure 10 and 11 As shown, the latch 7 has a semi-circular design to fasten the structural panel 1 to the connecting plate 6. This design ensures the smooth sliding of the scale.

[0054] On the structural panel 1, scale lines 5 are made in mm along the generatrix and axis directions. The intersection of the scale lines 5 and one side of the structural panel 1 is taken as the coordinate zero point 4. The Y-axis movable scale 3 serves as the Y-axis, and the X-axis movable scale 2 serves as the X-axis, forming a coordinate system. The X-axis movable scale 2 has a ring-shaped design and is connected to the two ends of the limiting strip of the structural panel 1 through slots. The Y-axis movable scale 3 has a semi-circular arc design and is connected to the two ends of the structural panel 1 through slots, allowing it to slide along the outline of the panel. The positioning device of this invention can determine any different detection position on the structural panel 1 by the relative movement of the movable scales 2 and 3.

[0055] 2) such as Figure 6 As shown, when the heterogeneous workpiece to be inspected is generally conical, the structural panel 101, after bending, is generally frustum-shaped, and the X-axis movable scale 102 is generally conical-ring-shaped and fitted to the structural panel 101; when the heterogeneous workpiece to be inspected is generally conical, as... Figure 7 As shown, the X-axis movable scale 102 includes a main scale 120 and a secondary scale 130 with two pull-out structures. During detection, as the diameter of the heterogeneous workpiece changes, the main scale 120 and the secondary scale 130 move relative to the outer surface of the heterogeneous workpiece.

[0056] Among them, such as Figure 8 As shown, the inner side of the main ruler 120 is provided with multiple slots with beveled protrusions for locking when pulled out; the secondary ruler 130 is correspondingly provided on the inner side of the main ruler 120, and the outer side of the secondary ruler 130 is provided with multiple reverse beveled protrusions corresponding to the slots of the main ruler 120. The main ruler 120 and the secondary ruler 130 are fixed by a retaining band 140.

[0057] The main scale 120 is wider than the secondary scale 130. The main scale 120 is measured in 1mm units, while the secondary scale 130 is measured in 0.1mm units.

[0058] The cone scale differs from the cylinder scale in that, during inspection, the movable X-axis scale 102 changes with the diameter of the workpiece. Therefore, the cone scale is designed as follows:

[0059] The X-axis movable scale 102 of the cone consists of a main scale 120 and a secondary scale 130 in the shape of a conical arc ring, as well as graduations set on the main scale 120 and the secondary scale 130. The conical arc ring is made according to the taper of the cone, so it can fit snugly against the conical outer wall of the workpiece. The arc ring has a two-section pull-out structure design, both sections are semi-circular rings. One section is an outer ring with a 20mm wide multi-section 45° angled protrusion in the middle of the groove, and the other section is an inner ring with a 20mm wide multi-section 45° supplementary corner protrusion in the middle of the groove. During inspection, as the diameter of the workpiece changes, it can be adjusted by the relative sliding of the multi-section 45° angled keyway of the inner and outer rings, which can quickly magnify and shrink, and is easy to tighten and loosen. At the same time, the clamping band is made of rubber, and the hand is used to fix it after the arc ring is slid in position.

[0060] Starting from the side limiting strip 11, scale lines are drawn on one side of the outer surface of the two semi-circular rings, each in mm. One section has a main scale 120 with 1mm units, and the other has a secondary scale 130 with 0.1mm units. The main scale 120 is 3mm narrower than the secondary scale 130, ensuring the scale lines align during inspection and guaranteeing accuracy. The scale value L1 of the main scale 120 and the scale value L2 of the secondary scale 130 are read. L1 + L2 represents the arc length of the circle, from which the offset angle of the detected position can be calculated. The offset angle of the detected position can be calculated as: 180 * L / (πr).

[0061] Operation and testing steps of this invention:

[0062] 1. The structural panel 1 is attached to the outline of the workpiece, and the windows, ring ribs, and bosses of the workpiece correspond to the round windows 8, ring ribs 9, and square bosses 10 of the structural panel 1.

[0063] 2. Secured by connecting plate 6 and latch 7, forming an effect of wrapping the workpiece.

[0064] 3. Select any detection position and move the X-movable ruler 2 and Y-movable ruler 3 to the detection position;

[0065] 4. The distance from the movable X scale 2 to the zero position is the arc length L of the circle. The offset angle of the detected position can be calculated as: 180*L / (πr).

[0066] 5. For example Figure 9 As shown, the distance from the Y movable scale 3 to the zero position is the height of the detected position.

[0067] This invention also provides a positioning and detection method for heterogeneous workpieces, employing the positioning and detection device for heterogeneous workpieces as described above, the method comprising:

[0068] Step 1: Wrap the structural panel 1 around the outer surface of the heterogeneous workpiece to be inspected;

[0069] Step 2: Select any point on the heterogeneous workpiece to be inspected. On the structural panel 1, move the movable scale 2 in the X direction along the side limit bar 11 and the movable scale 3 in the Y direction along the end limit bar 12 to the inspection position.

[0070] Step 3: During the inspection, the X-axis movable scale 2 moves relative to the outer surface of the heterogeneous workpiece. The X-axis scale value of the X-axis movable scale 2 is read, and the offset angle of the inspected position is calculated based on the X-axis scale value.

[0071] Step 4: Read the distance from the movable Y-axis ruler 3 to the zero coordinate position as the height of the detected position, and complete the positioning detection of the position to be detected.

[0072] Preferably, step three above includes:

[0073] During inspection, when the workpiece to be inspected is a cone, the main scale 120 and the auxiliary scale 130 of the X-axis movable scale 102 move relative to the outer surface of the workpiece. The scale value L1 of the main scale 120 and the scale value L2 of the auxiliary scale 130 are read. The sum of L1 and L2 is the arc length of the circle formed by the main scale 120 and the auxiliary scale 130. The offset angle of the inspected position is calculated based on the arc length of the circle.

[0074] The calculated offset angle of the detected position is: 180*L / (πr), where L is the arc length of the circle and r is the radius of the circle.

[0075] In summary, compared with existing technologies, this invention discloses a positioning device for inspection. Its innovation and contribution lie in its ability to design a flexible structural panel that perfectly conforms to the outer contour of the workpiece, revealing different internal structures, based on the workpiece's different shapes and internal structures. Furthermore, when used in conjunction with a movable, adjustable, graduated scale, it can position the workpiece at any location for inspection and measurement. This positioning tool for inspection solves the bottlenecks and limitations of existing inspection methods, meets the inspection needs of workpieces with different shapes and internal structures, accurately and promptly determines the inspection position, improves inspection efficiency, and ensures workpiece quality.

[0076] The above description describes specific embodiments of the present invention, intended to enable those skilled in the art to understand and implement the invention. It should not be construed as limiting the scope of protection of the present invention. Any equivalent substitutions or modifications made to the technical solutions and inventive concepts based on the present invention should be covered within the scope of protection of the present invention. It should be noted that implementation methods not shown or described in the accompanying drawings or the main text of the specification are forms known to those skilled in the art and are not described in detail. Furthermore, the definitions of the components and processes described above are not limited to the various specific structures, shapes, or methods mentioned in the embodiments.

Claims

1. A positioning and detection device for heterogeneous workpieces, characterized in that, include: The structural panel is a flexible structural panel body that can be bent to fit the outer wall contour of the heterogeneous workpiece to be tested based on the shape and structure of the workpiece to be tested. The flexible structural panel body is provided with scale lines along the generatrix and axis, and side limiting strips and end limiting strips are respectively provided on both sides of the generatrix and both ends of the axis. An X-axis movable ruler is slidably attached to the outer surface of the structural panel via the side limiting strip; A movable Y-axis ruler is slidably attached to the outer surface of the structural panel via the end limiting strip. The structural panel further includes: Multiple irregularly shaped through holes, the shape of which is configured to match the external irregular structure of the workpiece to be inspected; or / and Multiple rib-like structures are provided to match the external protruding ribs of the heterogeneous workpiece to be tested.

2. The positioning and detection device for heterogeneous workpieces according to claim 1, characterized in that, The two sides of the structural panel in the direction of the busbar are connected by an elastic locking assembly. The elastic locking assembly includes an elastic connecting plate and a locking buckle. The locking buckle passes through a circular hole provided on the structural panel and is fastened to the elastic connecting plate.

3. The positioning and detection device for heterogeneous workpieces according to claim 1, characterized in that, When the heterogeneous workpiece to be tested is cylindrical in shape, the structural panel is also cylindrical after bending, and the X-axis movable scale is annular and fitted to the structural panel.

4. The positioning and detection device for heterogeneous workpieces according to claim 1, characterized in that, When the heterogeneous workpiece to be tested is generally conical, the structural panel is bent to form a frustum shape, and the X-axis movable scale is generally conical and fits the structural panel.

5. The positioning and detection device for heterogeneous workpieces according to claim 4, characterized in that, The X-axis movable scale includes a main scale and a secondary scale with two pull-out structures. During detection, as the diameter of the heterogeneous workpiece changes, the main scale and the secondary scale move relative to the outer surface of the heterogeneous workpiece.

6. The positioning and detection device for heterogeneous workpieces according to claim 5, characterized in that, The inner side of the main ruler is provided with multiple slots with beveled protrusions for locking when pulled out; the secondary ruler is correspondingly provided on the inner side of the main ruler, and the outer side of the secondary ruler is provided with multiple reverse beveled protrusions corresponding to the slots of the main ruler. The main ruler and the secondary ruler are fixed by a clip.

7. The positioning and detection device for heterogeneous workpieces according to claim 6, characterized in that, The main scale is wider than the secondary scale. The main scale is measured in 1mm units, and the secondary scale is measured in 0.1mm units.

8. A positioning and detection method for heterogeneous workpieces, employing the method described in claim 1. The positioning and detection device for heterogeneous workpieces according to any one of the 7 is characterized in that, The method includes: Step 1: Wrap the structural panel around the outer surface of the heterogeneous workpiece to be tested; Step 2: Select any point of the heterogeneous workpiece to be tested. On the structural panel, move the movable X-axis scale along the side limiting strip and the movable Y-axis scale along the end limiting strip to the test position. Step 3: During the inspection, the X-axis movable scale moves relative to the outer surface of the heterogeneous workpiece, and the X-axis scale value of the X-axis movable scale is read. The offset angle of the inspected position is calculated based on the X-axis scale value. Step 4: Read the distance from the Y-axis movable scale to the coordinate zero position as the height of the detected position, and complete the positioning detection of the detected position.

9. The positioning and detection method for heterogeneous workpieces according to claim 8, characterized in that, Step three includes: During testing, when the workpiece to be tested is a cone, the main scale and the auxiliary scale of the X-axis movable scale move relative to each other following the outer surface of the workpiece. The scale value L1 of the main scale and the scale value L2 of the auxiliary scale are read. The sum of L1 and L2 is the arc length of the circle formed by the main scale and the auxiliary scale. The offset angle of the detected position is calculated based on the arc length of the circle. The calculated offset angle of the detected position is 180°. L / (πr), where L is the arc length of the circle and r is the radius of the circle.

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