A drawing die concentricity detector

Abstract

The utility model provides a kind of wire drawing die concentricity detector, including workpiece support seat, wire drawing die workpiece fixed on workpiece support seat, wire drawing die workpiece support seat is set on mobile adjustment platform, the both sides of mobile adjustment platform are respectively provided with light source emitting assembly and light source control assembly, light source emitting assembly and the light source control assembly are all connected on industrial computer, and visual software is set in industrial computer.Light source emitting assembly includes ring light source, lens, camera connected in turn up and down, ring light source, lens and camera coaxial center are set, ring light source is coaxially positioned on sheet metal piece, and sheet metal piece is fixed on sheet metal shell.The wire drawing die concentricity detector provided by the utility model can improve the precision of wire drawing die concentricity detection, and by the cooperation of double light sources, the photos taken by the camera are input into the industrial computer, and the concentricity of the wire drawing die can be obtained accurately and quickly by using the visual software in the industrial computer.

Description

Technical Field

[0001] This utility model belongs to the field of wire drawing die calibration technology, specifically relating to a wire drawing die concentricity tester. Background Technology

[0002] With the development of industries such as electronic equipment and wire and cable, the size of wire drawing die orifices is becoming smaller and smaller, reaching as low as 20 micrometers. The concentricity of the wire drawing die directly affects the stability and consistency of the wire drawing process, making the detection of the concentricity of the wire drawing die particularly important. A wire drawing die concentricity detection system generally includes two main functions: first, detecting the steel sleeve of the wire drawing die, specifically the dimensions and concentricity of the outer circle of the steel sleeve and the outer circle of the groove; second, detecting the dimensions and concentricity of the outer circle of the steel sleeve and the center hole of the die.

[0003] Currently, ordinary concentricity testing instruments generally consist of a movable support, a dial indicator, and a dial indicator support. However, their overall accuracy is not high, and they sometimes require human assistance and experience-based judgment, making it difficult to accurately detect concentricity errors and resulting in low efficiency in the testing process. Therefore, this solution proposes a wire drawing die concentricity testing instrument to address the aforementioned technical problems. Utility Model Content

[0004] The purpose of this invention is to provide a wire drawing die concentricity detector, which solves the technical problem of how to improve the accuracy of wire drawing die concentricity detection. By cooperating with dual light sources, the photos taken by the camera are input into the industrial control computer. Using the vision software in the industrial control computer, the concentricity of the wire drawing die can be obtained accurately and quickly.

[0005] A wire drawing die concentricity testing instrument includes a workpiece support base and a wire drawing die workpiece fixed on the workpiece support base. The wire drawing die workpiece support base is set on a movable adjustment platform. A light source emitting component and a light source control component are respectively arranged above and below the movable adjustment platform. The light source emitting component and the light source control component are both connected to an industrial control computer. The industrial control computer is equipped with vision software.

[0006] The light source emitting assembly includes a ring light source, a lens, and a camera connected sequentially from top to bottom. The ring light source, the lens, and the camera are coaxially arranged. The ring light source is coaxially positioned on a sheet metal sheet, and the sheet metal sheet is fixed to a sheet metal shell.

[0007] The light source control assembly includes a light source controller and a lower light source fixedly connected to the light source controller via a limiting plate. The light source controller is positioned and connected to a fixed frame, and the fixed frame is fixedly connected to a second protective shell.

[0008] The mobile adjustment platform includes a vertically arranged slide rail, a movable plate slidably arranged on the slide rail, and drive adjustment components separately arranged at both ends of the movable plate.

[0009] The drive adjustment assembly includes a limiting block 1 and a limiting block 2 fixed near the two ends of the moving plate, an adjusting bolt 1 passing through the limiting block 1, and an adjusting bolt 2 passing through the limiting block 2. The small ends of the adjusting bolt 1 and the adjusting bolt 2 respectively movably abut against the upper and lower ends of the moving plate.

[0010] The movable plate is also connected to the second drive adjustment component;

[0011] The second drive adjustment component includes an adjustment screw with one end connected to the side of the movable plate. The small end of the adjustment screw passes through the first protective shell. The first protective shell has an elongated hole. The adjustment screw moves through the elongated hole. The first protective shell is fixed below the sheet metal shell.

[0012] The workpiece support is provided with a limiting hole, and a wire drawing die workpiece is positioned on the limiting hole. The wire drawing die workpiece is coaxially arranged with the ring light source.

[0013] The vision software is either the SGVision system or the MVS machine vision system.

[0014] It should be noted that the details of the technical features not described in detail in this solution are all implemented according to the conventional operation of those skilled in the art, and will not be described in detail here.

[0015] This utility model achieves the following significant effects:

[0016] (1) To ensure the accuracy and effectiveness of the detection, this solution adopts different light sources and detection methods, and designs a dual-light source detection platform according to functional requirements.

[0017] (2) The wire drawing die concentricity detection system in this solution adopts the latest machine vision detection technology, which can accurately detect the concentricity of the outer circle, groove and central hole of the wire drawing die, and generate various measurement and comparison data related to the wire drawing die.

[0018] (3) Place the wire drawing die workpiece on the support, adjust and take two photos at the same time, one is a photo of the outer circle of the wire drawing die steel sleeve and the other is a photo of the groove. Both are made into grayscale images, and the edge is blurred by an algorithm to calculate the center of the circle. Place them in the same coordinate system, compare the center deviation of the two photos, and obtain the concentricity. It is convenient, quick and easy to operate, and has high accuracy. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the external structure of the concentricity detector in this utility model. Figure 1 .

[0020] Figure 2 This is a schematic diagram of the external structure of the concentricity detector in this utility model. Figure 2 .

[0021] Figure 3 This is a schematic diagram of the internal structure of the concentricity detector in this utility model. Figure 1 .

[0022] Figure 4 This is a schematic diagram of the internal structure of the concentricity detector in this utility model. Figure 2 .

[0023] Figure 5 This is a schematic diagram of the structure of the mobile adjustment platform in this utility model.

[0024] Figure 6 This is a schematic diagram of the structure of the stretching die workpiece in this utility model.

[0025] The attached figures are labeled as follows: 1. Wire drawing die workpiece; 1-1. Outer circle of steel sleeve; 1-2. Outer circle of groove; 1-3. Center hole of mold; 2. Workpiece support base; 3. Sheet metal shell; 31. Protective shell one; 32. Protective shell two; 4. Adjusting screw; 5. Light source controller; 6. Limiting plate; 7. Lower light source; 8. Moving plate; 81. Slide rail; 9. Limiting block one; 91. Adjusting bolt one; 10. Sheet metal sheet; 11. Ring light source; 12. Lens; 13. Camera; 14. Limiting block two; 141. Adjusting bolt two. Detailed Implementation

[0026] To more clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0027] See Figures 1-5 A wire drawing die concentricity detector includes a workpiece support 2 and a wire drawing die workpiece 1 fixed on the workpiece support 2. The support 2 is set on a movable adjustment platform. A light source emitting component and a light source control component are respectively set on the upper and lower parts of the movable adjustment platform. The light source emitting component and the light source control component are both connected to an industrial control computer. The industrial control computer is equipped with vision software.

[0028] The light source emitting assembly includes a ring light source 11, a lens 12, and a camera 13 connected sequentially from top to bottom. The ring light source 11, the lens 12, and the camera 13 are coaxially arranged. The ring light source 11 is coaxially positioned on a sheet metal sheet 10, and the sheet metal sheet 10 is fixed on a sheet metal shell 3.

[0029] The light source control assembly includes a light source controller 5 and a lower light source 7 that is fixedly connected to the light source controller 5 via a limiting plate 6. The light source controller 5 is positioned and connected to the fixed frame, and the fixed frame is fixedly connected to the protective shell 32.

[0030] The movable adjustment platform includes a vertically arranged slide rail 81, a movable plate 8 slidably arranged on the slide rail 81, and a drive adjustment component 1 separately arranged at both ends of the movable plate 8.

[0031] The drive adjustment assembly includes a first limiting block 9 and a second limiting block 14 fixed near the two ends of the moving plate 8, an adjustment bolt 91 passing through the first limiting block 9, and an adjustment bolt 141 passing through the second limiting block 14. The small ends of the first adjusting bolt 91 and the second adjusting bolt 141 are respectively movably abutting against the upper and lower ends of the moving plate 8.

[0032] Among them, the first limiting block 9 and the second limiting block 14 are not directly fixed to the moving plate 8, but are in separate contact and are fixed to the corresponding positioning structure inside the device. Under the up-and-down adjustment of the first adjusting bolt 91 and the second adjusting bolt 141, the moving plate moves up and down.

[0033] The movable plate 8 is also connected to the drive adjustment component 2;

[0034] The second drive adjustment assembly includes an adjustment screw 4 with one end connected to the side of the movable plate 8. The small end of the adjustment screw 4 passes through the protective shell 31. The protective shell 31 has an elongated hole. The adjustment screw 4 moves through the elongated hole. The protective shell 31 is fixed below the sheet metal shell 3.

[0035] Under the rotation of the adjusting screw 4, the movable plate 8 and the slide rail 81 move left and right simultaneously. The bottom end of the slide rail is connected to the horizontally set guide rail, so that the slide rail can move left and right along the guide rail, while the movable plate 8 can move up and down along the slide rail 81 for adjustment. For the sake of simplifying the design, the guide rail is not shown in the attached drawing.

[0036] The workpiece support 2 is provided with a limiting hole, and the wire drawing die workpiece 1 is positioned on the limiting hole. The wire drawing die workpiece 1 is coaxially arranged with the ring light source 11.

[0037] The vision software is either the SGVision system or the MVS machine vision system.

[0038] The specific working process of this utility model is as follows:

[0039] This solution mainly targets the steel sleeve of the wire drawing die. The outer circle of the steel sleeve of the wire drawing die must be concentric with the groove to set the diamond in the exact center position. Otherwise, the drilled hole may be off-center. The steel sleeve is part of the wire drawing die and is a finished product. After purchasing it, the concentricity is checked using the concentricity tester in this solution. Then the diamond is set in, sintered, and then drilled to form the die, completing the manufacturing process of the wire drawing die.

[0040] During the inspection, specifically, the lower light source 7 is installed directly below the wire drawing die workpiece 1, shining vertically upwards (for inspecting the wire drawing die).

[0041] A low-angle ring light source 11 is installed directly above the wire drawing die workpiece 1, shining horizontally downwards (to inspect the wire drawing die steel sleeve).

[0042] Light source controller 5 controls the light source switch;

[0043] The wire drawing die workpiece 1 is placed on the workpiece support 2. It is adjusted and two photos are taken at the same time. One photo is of the outer circle of the wire drawing die steel sleeve, and the other photo is of the groove. The photos are transmitted to the industrial control computer. Using vision software, both photos are made into grayscale images. The edges are blurred using an algorithm, and the center of the circle is automatically calculated. The two photos are placed in the same coordinate system, and the center deviation of the two photos is compared to obtain the concentricity. The operation is convenient and fast, and has high accuracy.

[0044] The height of the moving adjustment platform is adjusted according to the thickness of the wire drawing die workpiece 1. The detection distance between the camera 13 and the wire drawing die workpiece 1 has certain requirements and must be consistent each time. Two light sources are set to make the camera 13 capture clearer images.

[0045] See Figure 6 This solution can detect the concentricity of the outer circle 1-1 of the steel sleeve and the outer circle 1-2 of the groove, and can detect the concentricity of the outer circle 1-1 of the steel sleeve and the center hole 1-3 of the mold. This is hereby stated.

[0046] The technical features of this utility model not described can be implemented by or by using existing technology, and will not be repeated here. Of course, the above description is not a limitation of this utility model, and this utility model is not limited to the examples above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model should also be within the protection scope of this utility model.

Claims

1. A wire drawing die concentricity testing instrument, comprising a workpiece support base (2) and a wire drawing die workpiece (1) fixed on the workpiece support base (2), characterized in that, The wire drawing die workpiece (1) support base is set on the mobile adjustment platform. The upper and lower parts of the mobile adjustment platform are respectively provided with a light source emitting component and a light source control component. The light source emitting component and the light source control component are both connected to the industrial control computer, which is equipped with vision software.

2. The wire drawing die concentricity tester according to claim 1, characterized in that, The light source emitting assembly includes a ring light source (11), a lens (12), and a camera (13) connected sequentially from top to bottom. The ring light source (11), the lens (12), and the camera (13) are coaxially arranged. The ring light source (11) is coaxially positioned on a sheet metal sheet (10), and the sheet metal sheet (10) is fixed on a sheet metal shell (3).

3. The wire drawing die concentricity tester according to claim 1, characterized in that, The light source control assembly includes a light source controller (5) and a lower light source (7) fixedly connected to the light source controller (5) via a limiting plate (6). The light source controller (5) is positioned and connected to a fixed frame, and the fixed frame is fixedly connected to a protective shell (32).

4. The wire drawing die concentricity tester according to claim 2, characterized in that, The mobile adjustment platform includes a vertically arranged slide rail (81), a sliding plate (8) slidably arranged on the slide rail (81), and drive adjustment components respectively separated at both ends of the sliding plate (8).

5. The wire drawing die concentricity tester according to claim 4, characterized in that, The drive adjustment assembly includes a first limiting block (9) and a second limiting block (14) fixed near the two ends of the moving plate (8), an adjustment bolt (91) passing through the first limiting block (9), and an adjustment bolt (141) passing through the second limiting block (14). The small ends of the first adjusting bolt (91) and the second adjusting bolt (141) respectively move against the upper and lower ends of the moving plate (8).

6. The wire drawing die concentricity tester according to claim 4, characterized in that, The movable plate (8) is also connected to the second drive adjustment component; The second drive adjustment component includes an adjustment screw (4) with one end connected to the side of the moving plate (8). The small end of the adjustment screw (4) passes through the first protective shell (31). The first protective shell (31) has an elongated hole. The adjustment screw (4) moves through the elongated hole. The first protective shell (31) is fixed below the sheet metal shell (3).

7. The wire drawing die concentricity tester according to claim 2, characterized in that, The workpiece support base (2) is provided with a limiting hole, and a wire drawing die workpiece (1) is positioned on the limiting hole. The wire drawing die workpiece (1) is coaxially arranged with the ring light source (11).

8. The wire drawing die concentricity tester according to claim 1, characterized in that, The vision software is either the SGVision system or the MVS machine vision system.

Images