Cylindrical metal part thickness measuring device

Abstract

The utility model provides a cylindrical metal part thickness measuring device, which comprises a base and is characterized in that a lifting translation mechanism and a rotating mechanism are arranged on the base, an electromagnetic ultrasonic probe assembly is connected onto the lifting translation mechanism, a cylindrical metal part to be measured is arranged on the rotating mechanism, and an alignment mechanism is arranged on the base beside the rotating mechanism. The lifting translation mechanism drives the electromagnetic ultrasonic probe to measure the thickness of the cylindrical metal part on the rotating mechanism, the lifting translation mechanism can accurately adjust the position of the electromagnetic ultrasonic probe, and the rotating mechanism drives the cylindrical metal part to rotate, so that the thickness of any position of the cylindrical metal part is detected. The device does not need to be in direct contact with the surface of the cylindrical metal part to be detected, improves the detection efficiency, is simple in structure, is convenient to use, is reliable in positioning, can achieve the automatic alignment, guarantees the consistency and accuracy of batch detection, meets the wall thickness detection of various cylindrical metal parts, and is high in adaptability.

Description

Technical Field

[0001] The utility model relates to a device, in particular to a thickness measuring device for cylindrical metal parts, belonging to the technical field of mechanical design and manufacturing. Background Art

[0002] The wall thickness of cylindrical metal parts is a crucial indicator for determining whether they meet production standards. Wall thickness testing is essential at every critical step in the production process to avoid rework or scrapping due to excessive or abnormal wall thickness, which can lead to economic losses. Wall thickness measurement is a crucial step in the production of cylindrical metal parts, and intelligent wall thickness measurement, in particular, is crucial for automated production. Currently, portable ultrasonic thickness gauges are commonly used for measuring the thickness of cylindrical parts. These gauges utilize the principle of ultrasonic pulse reflection to measure the thickness of materials. They are widely used for precise thickness measurement of materials such as metal, glass, ceramics, and rubber. These gauges consist of a main unit and a probe. The main unit generates and receives ultrasonic pulses, while the probe transmits these pulses to the object being measured and receives the reflected ultrasonic waves. Testing cylindrical parts requires the operator to hold the ultrasonic thickness gauge and measure the thickness at multiple points around the entire circumference. Large diameter and heavy cylindrical parts require the use of coupling agents, making testing inconvenient, difficult, and inefficient. Electromagnetic ultrasonic thickness gauging is a relatively new nondestructive testing technology that utilizes electromagnetic coupling to excite and receive ultrasonic waves. Compared to conventional ultrasonic thickness gauging, electromagnetic ultrasonics offers significant advantages: it eliminates the need for coupling agents such as oil or water, eliminates contact with the workpiece surface, and reduces the impact on the workpiece surface quality, facilitating high-speed automated measurement. However, electromagnetic ultrasonic measurement also has shortcomings: it can only measure metal parts. While measurement does not require contact with the surface of the object being measured, a 5mm gap must be maintained. Furthermore, the transducer efficiency of electromagnetic ultrasonic measurement decays exponentially with the distance between the cylindrical metal part and the electromagnetic ultrasonic probe. Therefore, it is necessary to develop a device for clamping the electromagnetic ultrasonic probe to ensure a 5mm gap between it and the surface of the object being measured. Summary of the Invention

[0003] The utility model is designed to solve the deficiencies of existing thickness measuring devices for cylindrical metal parts and to provide a thickness measuring device for cylindrical metal parts.

[0004] The utility model is completed through the following technical solutions: a thickness measuring device for cylindrical metal parts, comprising a base, characterized in that a lifting and translation mechanism and a rotating mechanism are provided on the base, an electromagnetic ultrasonic probe assembly is connected to the lifting and translation mechanism, the cylindrical metal part to be measured is placed on the rotating mechanism, and an alignment mechanism is provided on the base beside the rotating mechanism, so that the electromagnetic ultrasonic probe is driven by the lifting and translation mechanism to measure the thickness of the cylindrical metal part on the rotating mechanism, the lifting and translation mechanism can accurately adjust the position of the electromagnetic ultrasonic probe, and the rotating mechanism drives the cylindrical metal part to rotate, thereby detecting the thickness of any position of the cylindrical metal part.

[0005] The base is configured as a rectangular flat plate with fixing ears or supporting legs provided on all four sides, so that the base can be fixed by the fixing ears, or the base can be directly placed on a desired work station by the supporting legs.

[0006] The lifting and translation mechanism includes a lifting slide, a first driving slider slidably connected to the lifting slide, a second driving slider slidably connected to the first driving slider, and a translation slide slidably connected to the second driving slider, wherein: the lifting slide is a first linear slide with the lower end connected to the base and the upper end extending vertically upward; the translation slide is a horizontally arranged second linear slide; so that the translation slide is driven by the first driving slider to move up and down along the lifting slide, and the translation slide is driven by the second driving slider to extend or retract horizontally along the first driving slider, thereby completing the precise adjustment of the position of the electromagnetic ultrasonic probe assembly, so that the electromagnetic ultrasonic probe assembly maintains the proper measurement distance with the cylindrical metal part to be measured.

[0007] The electromagnetic ultrasonic probe assembly includes a mounting frame arranged at the front end of the translation slide, a pitch adjustment assembly connected to the mounting frame, the pitch adjustment assembly includes a shell, a turntable vertically arranged on both sides of the shell, and a driving mechanism connected to the turntable is provided in the shell, the shell is fixed on the mounting frame, the turntable is connected to the pitch frame, the top of the pitch frame is provided with a laser rangefinder for forward distance measurement, the front end of the pitch frame is connected to the probe mounting frame through a plurality of horizontally arranged buffer springs, a probe is provided at the front center of the probe mounting frame, and a plurality of universal rollers extending forward and passing over the probe are provided around the probe mounting frame, so that the pitch frame, the laser rangefinder, the buffer spring, the probe mounting frame and the probe thereon can be driven by the turntable of the pitch adjustment assembly to adjust the pitch and elevation angles, which is used to measure the thickness of cylindrical metal parts with a certain axial curvature, and the probe is protected from collision damage by a plurality of universal rollers and buffer springs.

[0008] The rotating mechanism includes a fixed ring arranged on the base, a rotating ring sleeved in the fixed ring, and a rotating drive mechanism arranged on the fixed ring and matched with the rotating ring. A part positioning disk connected to the rotating ring is provided on the top of the rotating ring. The part positioning disk is provided with a plurality of positioning hole groups consisting of a plurality of radial through holes. Each positioning hole group is provided with a single or multiple positioning blocks. The positioning blocks are connected to the positioning holes by bolts and nuts so that the parts can be placed on the part positioning disk. The cylindrical metal parts are fixed by adjusting the position of the positioning blocks, thereby driving the cylindrical metal parts to rotate coaxially through the rotating mechanism.

[0009] The alignment mechanism includes a power cylinder vertically arranged on a base beside the rotating mechanism. A photoelectric switch is provided at the end of the piston rod of the power cylinder so that the position of the cylindrical metal part can be aligned through the photoelectric switch, thereby ensuring that the starting measurement point of the cylindrical metal part can be aligned with the probe, and ensuring that the measurement position of parts of the same specification is consistent.

[0010] The utility model also includes an industrial control host, a display screen, and a printer placed on an operating cabinet, which are electrically connected to the lifting and translation mechanism, the rotation mechanism, the electromagnetic ultrasonic probe assembly, and the alignment mechanism of the thickness measuring device. The industrial control host is connected to the display screen, and the printer is connected to the industrial control host. After the cylindrical metal part to be measured is clamped and positioned, the lifting and translation mechanism, the rotation mechanism, the electromagnetic ultrasonic probe assembly, and the alignment mechanism of the thickness measuring device are controlled by a detection program installed on the industrial control host to complete the automatic thickness measurement task of the cylindrical metal part, and the detection results are fed back to the display screen in real time. After the detection is completed, the detection personnel can edit the detection results, automatically generate a thickness measurement report of the cylindrical metal part, and print out the thickness measurement report through the printer.

[0011] The industrial control host is composed of an industrial control machine and a computer, which is configured as an integrated or split type.

[0012] The display screen is set as a liquid crystal display screen, and the operation cabinet is set as a single-station operation cabinet or a double-station operation cabinet.

[0013] The utility model has the following advantages and effects:

[0014] 1. The electromagnetic ultrasonic probe is driven by the lifting and translation mechanism to measure the thickness of the cylindrical metal parts on the rotating mechanism. The lifting and translation mechanism can accurately adjust the position of the electromagnetic ultrasonic probe, and the rotating mechanism drives the cylindrical metal parts to rotate, thereby detecting the thickness of any position of the cylindrical metal parts;

[0015] 2. There is no need to directly contact the surface of the cylindrical metal part to be tested, but to maintain a distance of 1 to 5 mm. At the same time, there is no need to apply coupling agent, which greatly improves the inspection efficiency and avoids the contamination of the workpiece by the coupling agent;

[0016] 3. Simple structure, easy to use, reliable positioning, can be adjusted according to the specifications of the parts to be tested, no need to use calipers to confirm the clamping range;

[0017] 4. Automatic alignment is possible to ensure the consistency and accuracy of batch testing and improve testing efficiency;

[0018] 5. The lifting and translation mechanism can be selected according to the size of the parts, so as to meet the wall thickness detection of most cylindrical metal parts and has strong adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the thickness measuring device structure of the present utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the electromagnetic ultrasonic probe assembly;

[0021] Figure 3 It is a schematic diagram of the rotating mechanism structure;

[0022] Figure 4 This is a schematic diagram of the parts positioning plate structure;

[0023] Figure 5 To find the schematic diagram of the structure of the mechanism;

[0024] Figure 6 This is the hardware composition diagram of the thickness measurement system. DETAILED DESCRIPTION

[0025] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example

[0026] The present invention provides a thickness measuring device for a cylindrical metal part, comprising a base 1, on which are provided a lifting and translation mechanism and a rotating mechanism 2, the lifting and translation mechanism being provided with an electromagnetic ultrasonic probe assembly 4, a cylindrical metal part 3 to be measured being placed on the rotating mechanism 2, and an alignment mechanism 9 being provided on the base 1 beside the rotating mechanism 2, so that the electromagnetic ultrasonic probe assembly 4 is driven by the lifting and translation mechanism to measure the thickness of the cylindrical metal part 3 on the rotating mechanism 2, the lifting and translation mechanism being able to precisely adjust the position of the electromagnetic ultrasonic probe assembly 4, and the rotating mechanism 2 driving the cylindrical metal part 3 to rotate, thereby detecting the thickness of any position of the cylindrical metal part 3;

[0027] The base 1 is configured as a rectangular flat plate with fixing ears 8 provided around the periphery so that the base 1 can be fixed by the fixing ears 8;

[0028] The lifting and translation mechanism includes a lifting slide 5, a first driving slider slidably connected to the lifting slide 5, a second driving slider slidably connected to the first driving slider, and a translation slide 6 slidably connected to the second driving slider, wherein: the lifting slide 5 is a first linear slide with its lower end connected to the base 1 and its upper end extending vertically upward; the translation slide 6 is a horizontally arranged second linear slide; so that the translation slide 6 is driven by the first driving slider to move up and down along the lifting slide 5, and the translation slide 6 is driven by the second driving slider to extend or retract horizontally along the first driving slider, thereby completing the precise adjustment of the position of the electromagnetic ultrasonic probe assembly 4, so that the electromagnetic ultrasonic probe assembly 4 maintains the required measurement distance from the cylindrical metal part 3 to be measured;

[0029] The first driving slider and the second driving slider are conventional sliders with built-in driving motors;

[0030] The electromagnetic ultrasonic probe assembly 4 includes: a mounting frame 18 provided at the front end of the translation slide 6, a pitch adjustment assembly connected to the mounting frame 18, the pitch adjustment assembly including a housing 16, a turntable 17 vertically provided on both sides of the housing 16, and a drive mechanism (i.e., a motor and a reducer) connected to the axis of the turntable 17 provided in the housing 16, the housing 16 is fixed on the mounting frame 18, the turntable 17 is connected to the pitch frame 14, the top of the pitch frame 14 is provided with a laser rangefinder 15 for forward ranging, and the front end of the pitch frame 14 is provided with a plurality of horizontally arranged buffers. The spring 13 is connected to the probe mounting frame 12. The probe mounting frame 12 has a probe 10 at the front center and four universal rollers 11 extending forward and passing over the probe 10. The pitch adjustment assembly's turntable 17 drives the pitch frame 14, laser rangefinder 15, buffer spring 13, probe mounting frame 12, and the probe 10 thereon to achieve pitch and elevation angle adjustment. This is used to measure the thickness of cylindrical metal parts with a certain axial curvature. The multiple universal rollers 10 and buffer springs 13 protect the probe 10 from collision damage.

[0031] The rotating mechanism 2 includes a fixed ring 19 provided on the base 1, a rotating ring 20 sleeved inside the fixed ring 9, and a rotating drive mechanism provided on the fixed ring 19 and matched with the rotating ring 20. A part positioning disk 21 connected to the rotating ring 20 is provided on the top of the rotating ring 20. The part positioning disk 21 is provided with a plurality of radial positioning hole groups 22 consisting of a plurality of through holes. Each positioning hole group 22 is provided with a positioning block 23. The positioning block 23 is connected to the through hole by a bolt and nut so that the cylindrical metal part 3 is placed on the part positioning disk 21. The cylindrical metal part 3 is fixed by adjusting the position of the positioning block 23, thereby driving the cylindrical metal part 3 to rotate coaxially through the rotating mechanism 2.

[0032] The alignment mechanism 9 includes a power cylinder 24 vertically mounted on the base 1 beside the rotating mechanism 2. A photoelectric switch 26 is provided at the end of the piston rod 25 of the power cylinder 24. The photoelectric switch 26 is used to detect the alignment of the position of the cylindrical metal part 3, thereby ensuring that the starting measurement point of the cylindrical metal part 3 is aligned with the probe 10, and ensuring that the measurement positions of parts of the same specification are consistent.

[0033] The present invention further includes an industrial control host 28, a display screen 29, and a printer 30 placed on an operating cabinet 27, which are electrically connected to the lifting and translation mechanism, the rotating mechanism 2, the electromagnetic ultrasonic probe assembly 4, and the alignment mechanism 9 of the thickness measuring device. The industrial control host 28 is connected to the display screen 29, and the printer 30 is connected to the industrial control host 28, so that after the cylindrical metal part 3 to be measured is clamped and positioned, the lifting and translation mechanism, the rotating mechanism 2, the electromagnetic ultrasonic probe assembly 4, and the alignment mechanism 9 of the thickness measuring device are controlled by a detection program installed on the industrial control host 28 to complete the automatic thickness measurement task of the cylindrical metal part 3, and the detection results are fed back to the display screen 29 in real time. After the detection is completed, the detection personnel can edit the detection results, automatically generate a thickness measurement report of the cylindrical metal part 3, and print the thickness measurement report through the printer 30;

[0034] The industrial control host 28 is composed of an industrial control machine and a computer, which is configured as an integrated unit;

[0035] The display screen 29 is set as a liquid crystal display screen, and the operation cabinet 27 is set as a double-station operation cabinet.

[0036] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0037] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A device for measuring thickness of cylindrical metal parts, comprising a base, characterized in that The base is provided with a lifting and translation mechanism and a rotating mechanism. The lifting and translation mechanism is connected to an electromagnetic ultrasonic probe assembly. The cylindrical metal part to be measured is placed on the rotating mechanism, and an alignment mechanism is provided on the base next to the rotating mechanism.

2. The thickness measuring device for cylindrical metal parts according to claim 1, characterized in that The base is configured as a rectangular flat plate with fixing ears or supporting feet arranged around the periphery.

3. The thickness measuring device for cylindrical metal parts according to claim 1, characterized in that The lifting and translation mechanism includes a lifting slide, a first driving slider slidably connected to the lifting slide, a second driving slider slidably connected to the first driving slider, and a translation slide slidably connected to the second driving slider, wherein: the lifting slide is a first linear slide with the lower end connected to the base and the upper end extending vertically upward; the translation slide is a second linear slide set horizontally.

4. The thickness measuring device for cylindrical metal parts according to claim 1, characterized in that The electromagnetic ultrasonic probe assembly includes a mounting bracket provided at the front end of the translation slide, a pitch adjustment assembly connected to the mounting bracket, the pitch adjustment assembly including a shell, a turntable vertically provided on both sides of the shell, and a driving mechanism connected to the turntable provided inside the shell, the shell is fixed on the mounting bracket, the turntable is connected to the pitch bracket, a laser rangefinder for forward distance measurement is provided on the top of the pitch bracket, the front end of the pitch bracket is connected to the probe mounting bracket through a plurality of horizontally arranged buffer springs, a probe is provided at the front center of the probe mounting bracket, and a plurality of universal rollers extending forward and passing over the probe are provided around the probe mounting bracket.

5. The thickness measuring device for cylindrical metal parts according to claim 1, characterized in that The rotating mechanism includes a fixed ring arranged on the base, a rotating ring sleeved in the fixed ring, and a rotating drive mechanism arranged on the fixed ring and matched with the rotating ring. A part positioning plate connected to the top of the rotating ring is provided, and the part positioning plate is provided with a plurality of positioning hole groups consisting of a plurality of radial through holes. Each positioning hole group is provided with a single or multiple positioning blocks, and the positioning blocks are connected to the positioning holes by bolts and nuts.

6. The thickness measuring device for cylindrical metal parts according to claim 1, characterized in that The alignment mechanism comprises a power cylinder vertically arranged on a base beside the rotating mechanism, and a photoelectric switch is arranged at the end of the piston rod of the power cylinder.

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