Automatic detection equipment for crack eddy current of threaded part

Abstract

The utility model relates to automatic thread part crack eddy current detection equipment which comprises an eddy current probe, an eddy current probe scanning servo mechanism, a clamping rotation driving mechanism, a V-shaped block and a supporting air cylinder, the clamping rotation driving mechanism is arranged on the side face of the supporting air cylinder, and the upper portion of the supporting air cylinder is in transmission connection with the V-shaped block. And the eddy current probe scanning servo mechanism is positioned above the V-shaped block and is in transmission connection with the eddy current probe. According to the automatic detection equipment for the crack eddy current of the threaded part, the threaded part is automatically detected by adopting an eddy current nondestructive detection method, so that the working intensity of detection personnel is reduced, human uncertain factors are eliminated, 100% detection of products is realized, and the automatic detection equipment can be expanded into full-automatic equipment for feeding, carrying and discharging according to requirements.

Description

Technical Field

[0001] The utility model relates to the field of automated detection, in particular to an eddy current automatic detection device for cracks in threaded parts. Background Art

[0002] The threaded area of threaded parts is currently mainly inspected by manual visual inspection, magnetic powder inspection, or penetrant inspection. However, whether it relies on magnetic powder inspection or penetrant inspection, it ultimately depends on the visual inspection and judgment of experienced operators. Therefore, human uncertainty (such as fatigue and carelessness) still exists. Utility Model Content

[0003] In order to solve the technical problems existing in the prior art, the utility model provides an automatic eddy current detection device for cracks in threaded parts.

[0004] In order to achieve the above object, the technical solutions of the present invention are as follows:

[0005] An eddy current automatic detection device for cracks in threaded parts includes an eddy current probe, an eddy current probe scanning servo mechanism, a clamping and rotating drive mechanism, a V-block, and a supporting cylinder. The clamping and rotating drive mechanism is arranged on the side of the supporting cylinder, and the upper part of the supporting cylinder is transmission-connected to the V-block. The eddy current probe scanning servo mechanism is located above the V-block, and the eddy current probe scanning servo mechanism is transmission-connected to the eddy current probe.

[0006] As an optimal technical solution, during inspection, the part is placed on a V-block and clamped by a clamping and rotating drive mechanism. After the supporting cylinder falls, the clamping and rotating drive mechanism drives the part to rotate. At the same time, the eddy current probe scanning servo mechanism drives the eddy current probe to translate and scan along the axis of the part.

[0007] As an optimal technical solution, the clamping rotation drive mechanism includes two clamping rotation components arranged opposite to each other, the V-block is located between the two clamping rotation components, the clamping rotation component includes a driver and a three-jaw clamp, the three-jaw clamp is fixed on the driver, and the driver drives the three-jaw clamp to perform rotational motion.

[0008] As an optimal technical solution, the eddy current probe scanning servo mechanism includes a servo motor, a transmission unit, a sliding unit and a connecting plate. The servo motor drives the connecting plate to translate along the sliding unit through the transmission unit, and the eddy current probe is installed on the connecting plate.

[0009] As a preferred technical solution, the connecting plate is L-shaped and has a through hole at the bottom. The eddy current probe passes through the through hole and is fixedly connected to the connecting plate.

[0010] As an optimal technical solution, the sliding unit includes a slider and a slide rail. The slide rail is horizontally arranged and located directly above the clamping rotation drive mechanism. The slider is slidably connected to the slide rail. The upper part of the connecting plate is fixedly connected to the slider, and the transmission unit is connected to the slider.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] This new automatic eddy current crack detection device for threaded parts utilizes eddy current nondestructive testing methods to automatically inspect threaded parts. This reduces the workload of inspectors, eliminates human uncertainty, and achieves 100% product inspection. It can also be expanded to fully automated equipment for incoming, handling, and unloading materials as needed. Compared to commonly used magnetic powder and penetrant methods, this device reduces potential harm to inspectors and environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural diagram of the eddy current automatic detection device for cracks in threaded parts of the present invention;

[0014] Figure 2 This is a front view of the eddy current automatic detection device for cracks in threaded parts of the present invention;

[0015] Figure 3 It is a side view of the eddy current automatic detection device for cracks in threaded parts of the present invention;

[0016] Figure 4 It is a top view of the threaded part crack eddy current automatic detection device of the present invention.

[0017] In the figure: 1. Eddy current probe; 2. Eddy current probe scanning servo mechanism; 3. Clamping and rotating drive mechanism; 4. V-block; 5. Support cylinder. DETAILED DESCRIPTION

[0018] The technical solution of the present invention is further described below in conjunction with specific embodiments:

[0019] like Figure 1 As shown, an eddy current automatic detection device for cracks in threaded parts includes an eddy current probe 1, an eddy current probe scanning servo mechanism 2, a clamping and rotating drive mechanism 3, a V-block 4, and a supporting cylinder 5. The clamping and rotating drive mechanism 3 is arranged on the side of the supporting cylinder 5, and the upper part of the supporting cylinder 5 is transmission connected to the V-block 4. The eddy current probe scanning servo mechanism 2 is located above the V-block 4, and the eddy current probe scanning servo mechanism 2 is transmission connected to the eddy current probe 1.

[0020] This device uses eddy current nondestructive testing technology to automatically inspect threaded parts. Eddy current testing is a nondestructive testing method based on electromagnetic induction. According to the principle of electromagnetic induction, conductive materials generated by an alternating magnetic field generate eddy currents. Defects in the surface and near-surface layers of the conductive material affect the size and distribution of these eddy currents. Changes in the size and distribution of these eddy currents can be used to detect defects in the material being tested.

[0021] During inspection, the part is placed on the V-block 4 and clamped by the clamping and rotating drive mechanism 3. After the supporting cylinder 5 falls, the clamping and rotating drive mechanism 3 drives the part to rotate. At the same time, the eddy current probe scanning servo mechanism 2 drives the eddy current probe 1 to translate and scan along the axis of the part.

[0022] The clamping rotation drive mechanism 3 includes two clamping rotation components arranged opposite to each other, and the V-block 4 is located between the two clamping rotation components. The clamping rotation component includes a driver and a three-claw clamp. The three-claw clamp is fixed on the driver, and the driver drives the three-claw clamp to rotate.

[0023] The eddy current probe scanning servo mechanism 2 includes a servo motor, a transmission unit, a sliding unit and a connecting plate. The servo motor drives the connecting plate to translate along the sliding unit through the transmission unit, and the eddy current probe 1 is installed on the connecting plate.

[0024] The connecting plate is L-shaped and has a through hole at the bottom. The eddy current probe 1 passes through the through hole and is fixedly connected to the connecting plate.

[0025] The sliding unit includes a slider and a slide rail. The slide rail is horizontally arranged and located directly above the clamping rotation drive mechanism 3. The slider is slidably connected to the slide rail. The upper part of the connecting plate is fixedly connected to the slider. The transmission unit is connected to the slider.

[0026] The transmission unit can be a screw, with the slider mounted on the screw. A servo motor drives the screw to rotate, and the slider moves along the screw and the slide rail, subject to the limits of the slide rail. The transmission unit can also be a gear and rack, with the slider connected to the rack. The servo motor drives the gear to rotate, transmitting the power to the rack, which drives the slider to translate on the slide rail. The transmission unit can also use other methods to drive the slider, connecting plate, and eddy current probe 1 to translate.

[0027] The device is used as follows: a part is placed into the central groove of the V-block 4 on the support cylinder 5. A three-jaw clamp grips the part, and the support cylinder 5 lowers. A driver controls the clamp to rotate the part. Simultaneously, the eddy current probe scanning servo mechanism 2, via a transmission unit, drives the slider to translate on the rail, moving the connecting plate and allowing the eddy current probe 1 to scan along the part axis at the set pitch and speed. After the part is inspected, the support cylinder 5 extends, and the three-jaw clamp releases the inspected part, allowing it to drop into the central groove of the V-block 4 on the support cylinder 5.

[0028] This embodiment is only a further explanation of the invention and is not a limitation of the invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed, but as long as they are within the scope of the claims of the invention, they are protected by patent law.

Claims

1. An automatic eddy current detection device for cracks in threaded parts, characterized in that: It includes an eddy current probe, an eddy current probe scanning servo mechanism, a clamping and rotating drive mechanism, a V-block and a supporting cylinder. The clamping and rotating drive mechanism is arranged on the side of the supporting cylinder, the upper part of the supporting cylinder is transmission connected to the V-block, the eddy current probe scanning servo mechanism is located above the V-block, and the eddy current probe scanning servo mechanism is transmission connected to the eddy current probe.

2. The automatic eddy current detection device for threaded part cracks according to claim 1, characterized in that: During inspection, the part is placed on the V-block and clamped by the clamping and rotating drive mechanism. After the supporting cylinder falls, the clamping and rotating drive mechanism drives the part to rotate. At the same time, the eddy current probe scanning servo mechanism drives the eddy current probe to translate and scan along the axis of the part.

3. The automatic eddy current detection device for threaded part cracks according to claim 1, characterized in that: The clamping rotation drive mechanism includes two clamping rotation components arranged opposite to each other, the V-block is located between the two clamping rotation components, the clamping rotation component includes a driver and a three-claw clamp, the three-claw clamp is fixed on the driver, and the driver drives the three-claw clamp to rotate.

4. The automatic eddy current detection device for threaded part cracks according to claim 1, characterized in that: The eddy current probe scanning servo mechanism includes a servo motor, a transmission unit, a sliding unit and a connecting plate. The servo motor drives the connecting plate to translate along the sliding unit through the transmission unit, and the eddy current probe is installed on the connecting plate.

5. The automatic eddy current detection device for threaded part cracks according to claim 4, characterized in that: The connecting plate is L-shaped and has a through hole at the bottom. The eddy current probe passes through the through hole and is fixedly connected to the connecting plate.

6. The automatic eddy current detection device for threaded part cracks according to claim 4, characterized in that: The sliding unit includes a slider and a slide rail. The slide rail is horizontally arranged and located directly above the clamping rotation drive mechanism. The slider is slidably connected to the slide rail. The upper part of the connecting plate is fixedly connected to the slider. The transmission unit is connected to the slider.

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