A device for detecting the form and concentricity of thin-walled turned parts

Abstract

The utility model relates to mechanical parts detection equipment technical field, concretely is a kind of anti-variant form concentricity detection device for thin wall turning piece, including placing plate, placing table, support frame, detector and supporting device, the support frame fixedly connected in the lower surface of placing plate, the placing table fixedly connected in the upper surface of placing plate, the detector is installed in the upper surface of placing plate, the supporting device is installed in the upper surface of placing table, the supporting device includes connecting plate and sliding block, the connecting plate fixedly connected in the upper surface of placing table, the sliding block is slidably connected in the upper surface of connecting plate, the both ends of connecting plate are fixedly connected with mounting plate, the inside fixedly connected of mounting plate has slide rod, the slide rod is slidably connected in the inside of sliding block, the upper end fixedly connected of sliding block has support plate, the inside rotatably connected of support plate has gyro wheel. The utility model supporting device, the stable support of material is realized, and the accuracy of equipment is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of mechanical parts testing equipment, and in particular to a concentricity testing device for thin-walled turned parts to prevent deformation. Background Technology

[0002] Thin-walled machined parts are a class of precision mechanical parts with a small ratio of wall thickness to diameter (usually wall thickness ≤ 5 mm and wall thickness / diameter ≤ 1 / 20). They are cylindrical, ring-shaped, or disc-shaped, and have the core characteristics of compact structure and light weight. Their materials include lightweight and high-strength materials such as aluminum alloy, titanium alloy, and carbon fiber composite materials. They are widely used in aerospace, high-end equipment and other fields. When inspecting thin-walled machined parts, a concentricity detection device with anti-deformation function is generally used to support and stabilize the thin-walled machined parts.

[0003] However, existing equipment has the following shortcomings: In the material fixing stage, existing concentricity detection devices for thin-walled turned parts generally use traditional rigid three-jaw chucks as positioning mechanisms. These chucks achieve clamping and fixing by contracting three rigid jaws toward the center. However, the clamping force is concentrated on three local contact points of the thin-walled part, which cannot achieve uniform force distribution. Since the thin-walled turned parts have thin walls and poor rigidity, the locally concentrated clamping force can easily cause elastic deformation or even plastic deformation, resulting in changes to the original geometry of the part. This clamping deformation will directly cause the reference axis of the part to shift during the detection process, resulting in deviations in the detection equipment and failing to accurately reflect the true machining accuracy of the thin-walled turned parts, which seriously affects the reliability of quality inspection judgment.

[0004] Therefore, we propose a concentricity detection device for thin-walled turned parts to prevent deformation, in order to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies where traditional equipment can easily damage the surface of materials during clamping, thus affecting the accuracy of equipment detection. In this invention, a concentricity detection device for thin-walled machined parts is proposed to prevent deformation.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a concentricity detection device for anti-deformation of thin-walled turned parts, comprising a placement plate, a placement platform, a support frame, a detector, and a support device. The support frame is fixedly connected to the lower surface of the placement plate, the placement platform is fixedly connected to the upper surface of the placement plate, the detector is installed on the upper surface of the placement plate, and the support device is installed on the upper surface of the placement platform. The support device includes a connecting plate and a slider. The connecting plate is fixedly connected to the upper surface of the placement platform, and the slider is slidably connected to the upper surface of the connecting plate. Mounting plates are fixedly connected to both ends of the connecting plate. A sliding rod is fixedly connected inside the mounting plate and slidably connected inside the slider. A support plate is fixedly connected to the upper end of the slider. A roller is rotatably connected inside the support plate, and a positive and negative threaded rod is rotatably connected inside the mounting plate.

[0007] Furthermore, the positive and negative threaded rods are threadedly connected inside the slider, and a protrusion is fixedly connected in the middle of the positive and negative threaded rods. By setting the positive and negative threaded rods, the slider can be moved, reducing the situation where the slider is difficult to move smoothly during use.

[0008] Furthermore, a servo motor is fixedly connected to one end of the positive and negative threaded rod.

[0009] Furthermore, a mounting base is fixedly connected to the surface of the servo motor, and the mounting base is fixedly connected to the surface of the mounting plate. The mounting base facilitates the fixing of the servo motor.

[0010] Furthermore, an auxiliary component is fixedly installed on the upper surface of the placement platform. The auxiliary component includes a mounting arm and a cylinder. The cylinder is fixedly connected to the upper surface of the placement platform, and the mounting arm is fixedly connected to the upper end of the cylinder. A pressure roller is rotatably connected to the end of the mounting arm away from the cylinder. A power motor is fixedly connected to the side of the pressure roller. By setting the pressure roller, the material can be limited, reducing the difficulty of stabilizing the material during equipment use.

[0011] Furthermore, a mounting bracket is fixedly connected to the surface of the power motor, and the mounting bracket is fixedly connected to the surface of the mounting arm.

[0012] Furthermore, a mounting head is fixedly connected to the lower side of the cylinder.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, by setting up a support device, the material is effectively and quickly supported, which plays a role in stabilizing the material. This reduces the situation where existing equipment generally uses a traditional rigid three-jaw chuck for positioning when fixing materials, and the clamping force is concentrated in a local area, causing clamping deformation of thin-walled parts and affecting the test data. This support device achieves stable support of the material and improves the accuracy of the equipment.

[0014] 2. In this utility model, by setting an auxiliary component, the rotation of the material is effectively controlled, which plays a role in limiting the material. This reduces the situation where the material is difficult to rotate on the roller surface when the existing equipment is in use, making it difficult for the equipment detector to detect. This auxiliary component realizes the limiting of the material and improves the stability of the equipment. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0016] Figure 1 A three-dimensional structural schematic diagram of a concentricity detection device for anti-deformation of thin-walled turned parts is provided for this utility model. Figure 2 A side view of the concentricity detection device for anti-deformation of thin-walled turned parts is presented in this utility model. Figure 3 This utility model presents a partial structural schematic diagram of a concentricity detection device for anti-deformation of thin-walled turned parts. Figure 4 This invention proposes a concentricity detection device for thin-walled turned parts to prevent deformation. Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 This invention proposes a concentricity detection device for thin-walled turned parts to prevent deformation. Figure 3 Enlarged structural diagram at point B.

[0017] Legend: 1. Placement plate; 2. Placement platform; 3. Support frame; 4. Detector; 5. Support device; 51. Connecting plate; 52. Slider; 53. Slide rod; 54. Roller; 55. Support plate; 56. Threaded rod (positive and negative); 57. Protrusion; 58. Mounting plate; 59. Servo motor; 510. Mounting base; 6. Auxiliary components; 61. Mounting arm; 62. Pressure roller; 63. Power motor; 64. Mounting bracket; 65. Cylinder; 66. Mounting head. Detailed Implementation

[0018] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0019] Please see Figures 1-5 This utility model provides a technical solution: a concentricity detection device for anti-deformation of thin-walled machined parts, including a placement plate 1, a placement stage 2, a support frame 3, a detector 4 and a support device 5. The support frame 3 is fixedly connected to the lower surface of the placement plate 1, the placement stage 2 is fixedly connected to the upper surface of the placement plate 1, and the detector 4 is installed on the upper surface of the placement plate 1.

[0020] The placement plate 1 is made of cast iron, and its internal stress is eliminated by aging treatment. The surface is finely ground to a flatness of ≤0.02mm / m, providing a stable installation benchmark for each component and avoiding detection errors caused by vibration. The placement plate 1 is the foundation for the equipment. The support frame 3 is a rectangular steel pipe welded structure with leveling pads at the bottom, which can finely adjust the level of the placement plate 1 to ensure that the workpiece axis is parallel to the probe of the detector 4 during detection, thereby improving detection accuracy. The placement table 2 is fixed to the placement plate 1 with bolts. The table surface has weight-reducing holes to reduce the weight of the equipment while maintaining rigidity. The upper surface has positioning pins to ensure accurate installation with the support device 5. The detector 4 is a laser displacement sensor with a detection accuracy of 0.001mm. It can collect workpiece surface data in real time and transmit it to the terminal, automatically calculating the concentricity deviation. Compared with traditional dial indicators, the detection efficiency is improved by 5 times.

[0021] The specific setup and function of its support device 5 and auxiliary components 6 will be described in detail below.

[0022] In this implementation scheme: the support device 5 is installed on the upper surface of the placement platform 2 and is the core mechanism for achieving anti-deformation support for thin-walled parts. It breaks through the limitations of the traditional three-jaw chuck's "point contact" clamping and adopts "line contact" multi-roller 54 support, distributing the clamping force into a surface load, ensuring that the workpiece surface stress is ≤5MPa, far below the yield strength of the thin-walled part, thus avoiding clamping deformation. The support device 5 includes a connecting plate 51 and a slider 52. The connecting plate 51 is fixedly connected to the upper surface of the placement platform 2, and the slider 52 is slidably connected to the upper surface of the connecting plate 51. Mounting plates 58 are fixedly connected to both ends of the connecting plate 51. An internally fixed sliding rod 53 is slidably connected inside the slider 52. A support plate 55 is fixedly connected to the upper end of the slider 52. A roller 54 is rotatably connected inside the support plate 55. The surface of the roller 54 is covered with a polyurethane elastic layer with a Shore hardness of 30-40HA. It can provide sufficient friction to drive the workpiece to rotate, and can also buffer pressure through elastic deformation to avoid indentation on the workpiece surface. A positive and negative threaded rod 56 is rotatably connected inside the mounting plate 58. The positive and negative threaded rod 56 adopts a fine thread design with a pitch of 2mm and a transmission accuracy of 0.01mm, which can realize the micro-precision movement of the slider 52.

[0023] Specifically, the positive and negative threaded rod 56 is internally threaded to the slider 52. A protrusion 57 is fixedly connected in the middle of the positive and negative threaded rod 56. The protrusion 57 has a hexagonal structure, which facilitates the positioning of the threaded rod during installation and serves as a transition area for the threads on both sides to ensure the accuracy of thread processing.

[0024] In this embodiment, by setting the positive and negative threaded rods 56, the slider 52 can be moved, reducing the difficulty of the slider 52 moving smoothly during use.

[0025] Specifically, a servo motor 59 is fixedly connected to one end of the positive and negative threaded rod 56. The servo motor 59 is a high-precision stepper servo type with a positioning accuracy of 0.001 turns. It can precisely control the rotation angle of the threaded rod through the control system, thereby realizing the digital adjustment of the distance between the sliders 52, and is suitable for thin-walled parts with different diameters from φ10 to φ200mm.

[0026] Specifically, a mounting base 510 is fixedly connected to the surface of the servo motor 59. The mounting base 510 is fixedly connected to the surface of the mounting plate 58. The mounting base 510 is provided to facilitate the fixing of the servo motor 59.

[0027] In this implementation scheme: An auxiliary component 6 is fixedly installed on the upper surface of the placement platform 2. It is a key structure for achieving stable rotation of thin-walled parts. Through the coordinated drive of "pressure roller 62-roller 54", the impact on the workpiece caused by traditional dial drive is avoided. At the same time, the elastic pressure design of the pressure roller 62 prevents the workpiece from being deformed by pressure. The auxiliary component 6 includes a mounting arm 61 and a cylinder 65. The cylinder 65 is fixedly connected to the upper surface of the placement platform 2. The mounting arm 61 is fixedly connected to the upper end of the cylinder 65. The pressure roller 62 is rotatably connected to the end of the mounting arm 61 away from the cylinder 65. A power motor 63 is fixedly connected to the side of the pressure roller 62. The power motor 63 is a variable frequency motor, and the speed can be adjusted within the range of 5-30 r / min to avoid centrifugal deformation of the workpiece caused by high-speed rotation.

[0028] In this embodiment, by setting the pressure roller 62, the material can be limited, reducing the difficulty of stabilizing the material during equipment use.

[0029] Specifically, a mounting bracket 64 is fixedly connected to the surface of the power motor 63. The mounting bracket 64 has a U-shaped structure and is rigidly connected to the mounting arm 61 to ensure that the motor output shaft is parallel to the axis of the pressure roller 62 and to avoid the synchronous belt from running off-center. The mounting bracket 64 is fixedly connected to the surface of the mounting arm 61.

[0030] Specifically, a mounting head 66 is fixedly connected to the lower side of the cylinder 65. The mounting head 66 is equipped with a pressure sensor, which can monitor the output pressure of the cylinder 65 in real time and feed it back to the control system to achieve precise closed-loop control of the pressure and prevent excessive pressure from causing deformation of thin-walled parts.

[0031] Working Principle: When using the equipment, the user places the material to be tested on the surface of the rollers 54 above the placement platform 2. The material is then tested by the detector 4. When placing the material, the user starts the servo motor 59, which drives the positive and negative threaded rods 56 to rotate inside the mounting plate 58. Subsequently, the positive and negative threaded rods 56 drive the slider 52 to move on the surface of the slide bar 53. The movement of the slider 52 drives the support plate 55 and the rollers 54 to move in a centered or separated manner, adjusting the distance between the rollers 54. By setting up the support device 5, the material is effectively and quickly supported, which plays a role in stabilizing the material. This reduces the problem that existing equipment generally uses traditional rigid three-jaw chucks for positioning when fixing materials, where the clamping force is concentrated in a local area, causing clamping deformation of thin-walled parts and affecting the test data. This support device 5 achieves stable support of the material and improves the accuracy of the equipment.

[0032] By setting auxiliary component 6, when the equipment places the material on the upper surface of the roller 54, the cylinder 65 is activated to drive the mounting arm 61 and the pressure roller 62 to move and press the upper surface of the material. After pressing the material, the power motor 63 is activated to drive the pressure roller 62 to rotate, and the material is simultaneously driven to rotate between the pressure roller 62 and the roller 54. By setting auxiliary component 6, the rotation of the material is effectively controlled, which plays a role in limiting the material and reduces the situation where the material is difficult to rotate on the surface of the roller 54 when the existing equipment is in use, making it difficult for the equipment detector 4 to detect. This auxiliary component 6 realizes the limiting of the material and improves the stability of the equipment.

[0033] The above description discloses only one or more preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above embodiments and making equivalent changes in accordance with the claims of the present utility model still fall within the scope of the present utility model.

Claims

1. A device for preventing deformation of the concentricity detection device for thin-walled turning parts, comprising a placement plate (1), a placement table (2), a support frame (3), a detector (4) and a support device (5), characterized in that: the support frame (3) is fixedly connected to the lower surface of the placement plate (1), the placement table (2) is fixedly connected to the upper surface of the placement plate (1), and the detector (4) is installed on the upper surface of the placement plate (1); the support device (5) is installed on the upper surface of the placement table (2), the support device (5) comprises a connecting plate (51) and a sliding block (52), the connecting plate (51) is fixedly connected to the upper surface of the placement table (2), the sliding block (52) is slidingly connected to the upper surface of the connecting plate (51), both ends of the connecting plate (51) are fixedly connected with a mounting plate (58), the inside of the mounting plate (58) is fixedly connected with a sliding rod (53), the sliding rod (53) is slidingly connected to the inside of the sliding block (52), the upper end of the sliding block (52) is fixedly connected with a support plate (55), the inside of the support plate (55) is rotatably connected with a roller (54), and the inside of the mounting plate (58) is rotatably connected with a positive and negative threaded rod (56). The positive and negative threaded rod (56) is threadedly connected to the inside of the sliding block (52), and the middle of the positive and negative threaded rod (56) is fixedly connected with a protrusion (57).

2. A device for detecting the form and concentricity of thin-walled turned parts according to claim 1, characterized in that: One end of the positive and negative threaded rod (56) is fixedly connected with a servo motor (59).

3. A device for detecting the form and concentricity of thin-walled turned parts according to claim 2, characterized in that: The surface of the servo motor (59) is fixedly connected with a mounting seat (510), and the mounting seat (510) is fixedly connected to the surface of the mounting plate (58).

4. A device for detecting the form and concentricity of thin-walled turned parts according to claim 3, characterized in that: The upper surface of the placement table (2) is fixedly provided with an auxiliary assembly (6), the auxiliary assembly (6) comprises a mounting arm (61) and a cylinder (65), the cylinder (65) is fixedly connected to the upper surface of the placement table (2), the mounting arm (61) is fixedly connected to the upper end of the cylinder (65), the inside of the end of the mounting arm (61) away from the cylinder (65) is rotatably connected with a pressure roller (62), and the side of the pressure roller (62) is fixedly connected with a power motor (63).

5. A device for detecting the form and concentricity of thin-walled turned parts according to claim 1, characterized in that: The surface of the power motor (63) is fixedly connected with a mounting bracket (64), and the mounting bracket (64) is fixedly connected to the surface of the mounting arm (61).

6. A device for detecting the form and concentricity of thin-walled turned parts according to claim 5, characterized in that: The lower end of the cylinder (65) is fixedly connected with a mounting head (66).

7. A device for detecting the form and concentricity of thin-walled turned parts according to claim 6, characterized in that: ​

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