Device and system for detecting thickness of large-curvature thin-walled part

Abstract

A kind of detection device and system for thickness of large curvature thin-walled part thickness, it is related to metrology thickness field.The detection device for thickness of large curvature thin-walled part thickness includes base, main shaft connected to the base of bottom, at least one telescopic lower support arm, at least one telescopic lower support rod, rotating seat rotatably connected to the top of main shaft around vertical axis, at least one telescopic upper support arm and at least one micrometer;Lower support arm one end is vertically connected to main shaft and rotatably connected to main shaft;Lower support rod bottom is connected to a lower support arm away from main shaft one end, and lower support rod top is connected with lower contact;Upper support arm is horizontally arranged and connected to rotating seat side;Each micrometer is configured to be vertically connected to an upper support arm away from rotating seat one end in detachable manner.The detection device for thickness of large curvature thin-walled part thickness and system can adapt to the stable support of large curvature thin-walled part and large range surface thickness detection, with the advantages of high test efficiency, convenient and fast use.

Description

Technical Field

[0001] This application relates to the field of thickness measurement, and more specifically, to a device and system for detecting the thickness of thin-walled parts with large curvature. Background Technology

[0002] The inspection of thin-walled parts involves many indicators such as appearance quality, form error, and step difference. These indicators share some similarities and differences in their testing logic and methods. For thin-walled parts with curvature, to perform multi-indicator testing, the testing equipment must first have sufficient internal space to ensure that the part maintains its proper shape during the testing process, avoiding deformation that could cause local dimensional distortion and thus measurement errors.

[0003] Traditional thickness inspection devices typically consist of a stage and a detection probe. These devices are mostly used for thickness inspection of regularly shaped or unbent sheets. However, when dealing with thin-walled parts with curvature, it is necessary to cut the sheet material for measurement, or measurement may be impossible altogether. For smaller parts with large curvatures, there are problems with the detection probe not fitting properly and the operation being difficult. For detecting part shape differences, if a coordinate measuring machine (CMM) is used, reciprocating calibration and positioning are required. For smaller parts, this reciprocating clamping operation is cumbersome and time-consuming.

[0004] Therefore, there is a need for an accurate and efficient detection device that can adapt to the thickness of thin-walled parts with large curvature. Utility Model Content

[0005] The purpose of this application is to provide a device and system for detecting the thickness of thin-walled parts with large curvature, which can adapt to the stable support of thin-walled parts with large curvature and detect the surface thickness over a wide range, and has the advantages of high testing efficiency and convenient and quick use.

[0006] This application is implemented as follows: This application provides a device for detecting the thickness of thin-walled parts with large curvature, comprising: Base; The main shaft is vertically arranged and its bottom is connected to the base; At least one retractable lower support arm, arranged horizontally and connected to the main shaft at one end in a way that allows it to be raised, lowered, and rotated about the main shaft; At least one telescopic lower support rod is arranged vertically and its bottom is connected to the end of a lower support arm away from the main shaft, and a lower contact is connected to the top of the lower support rod; A swivel base is rotatably connected to the top of the spindle about a vertical axis; At least one retractable upper arm is arranged horizontally and connected to the side of the swivel seat; At least one dial indicator, each dial indicator being configured to be detachably vertically connected to an upper arm at the end away from the swivel base.

[0007] In some alternative embodiments, at least one support base is also included, the bottom of which has a ball groove, a lower contact is configured to be rotatably engaged with the ball groove, and the top of which has a support ball head.

[0008] In some alternative embodiments, the top surface of the rotary seat is provided with a connecting hole that extends through its bottom surface, and the inner wall of the connecting hole protrudes to form a support portion supported on the top surface of the spindle.

[0009] In some alternative implementations, the top surface of the spindle is provided with an angle scale extending circumferentially, and an angle pointer is connected to the support.

[0010] In some alternative implementations, the angle pointer and the two upper arms are arranged collinearly.

[0011] In some alternative implementations, the lower support arm is connected to two symmetrically arranged arc-shaped clamps and fastening bolts on both sides of the main shaft. The fastening bolts are threaded through and connected to the two clamps at the end away from the lower support arm.

[0012] In some alternative implementations, the swivel base is connected to two upper arms symmetrically arranged at its two ends.

[0013] In some alternative implementations, the rotary seat is connected to at least two upper arms, each upper arm being rotatably connected to the rotary seat about a main shaft via a rotating ring fitted on the rotary seat.

[0014] In some alternative implementations, the outer wall of the spindle is provided with a height scale extending in the height direction.

[0015] This application also provides a system for detecting the thickness of thin-walled parts with large curvature, which includes the above-described device for detecting the thickness of thin-walled parts with large curvature.

[0016] The beneficial effects of this application are as follows: The device for detecting the thickness of thin-walled parts with large curvature provided by this application includes a base, a vertically arranged main shaft connected to the base at its bottom, at least one retractable lower support arm, at least one retractable lower support rod, a rotary seat rotatably connected to the top of the main shaft about a vertical axis, at least one retractable upper support arm, and at least one dial indicator; the lower support arm is horizontally arranged and one end is vertically and rotatably connected to the main shaft about a vertical axis; the lower support rod is vertically arranged and its bottom is connected to the end of the lower support arm away from the main shaft, and a lower contact is connected to the top of the lower support rod; the upper support arm is horizontally arranged and connected to the side of the rotary seat; each dial indicator is configured to be detachably vertically connected to the end of an upper support arm away from the rotary seat. The device for detecting the thickness of thin-walled parts with large curvature provided in this application allows operators to easily rotate the lower support arm and extend the lower support rod to support the bottom of the parts to be tested with different curvatures. The position of the dial indicator can be adjusted by rotating the base and extending the upper support arm so that the probe at the bottom of the dial indicator can be used to detect the top surface of the supported parts. It can adapt to the stable support of thin-walled parts with large curvature and the detection of surface thickness over a wide range. It has the advantages of high testing efficiency and convenient and quick use. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a partial perspective view of the device for detecting the thickness of thin-walled parts with large curvature provided in Embodiment 1 of this application; Figure 2 This is a first-view structural schematic diagram of the first usage state of the device for detecting the thickness of thin-walled parts with large curvature provided in Embodiment 1 of this application, which detects the parts. Figure 3 This is a second-view structural schematic diagram of the first usage state of the device for detecting the thickness of thin-walled parts with large curvature provided in Embodiment 1 of this application, which detects the parts. Figure 4 This is a schematic diagram of the second usage state of the device for detecting the thickness of thin-walled parts with large curvature provided in Embodiment 1 of this application, which detects the parts. Figure 5 This is a partial perspective view of the device for detecting the thickness of thin-walled parts with large curvature provided in Embodiment 2 of this application; Figure 6This is a partial top view of the rotating seat of the device for detecting the thickness of thin-walled parts with large curvature provided in Embodiment 2 of this application, when it is mounted on the main shaft. Figure 7 This is a schematic diagram of the structure of the device for detecting the thickness of thin-walled parts with large curvature provided in Embodiment 3 of this application.

[0019] In the diagram: 100, base; 110, spindle; 111, angle scale; 112, height scale; 120, lower support arm; 121, clamp plate; 122, fastening bolt; 130, lower support rod; 140, lower contact; 150, rotating seat; 151, connecting hole; 152, support part; 153, angle pointer; 160, dial indicator; 161, probe; 170, support seat; 180, ball groove; 190, ball head; 200, upper support arm; 210, rotating ring; 220, connecting hole; 230, clamping plate; 240, limit bolt. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application 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, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0025] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0026] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] The features and performance of the device and system for detecting the thickness of thin-walled parts with large curvature of this application are further described in detail below with reference to embodiments.

[0028] Example 1 like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this application provides a device for detecting the thickness of thin-walled parts with large curvature, which includes a base 100, a vertically arranged main shaft 110 with its bottom connected to the top surface of the base 100, a telescopic lower support arm 120, a telescopic lower support rod 130, a rotating seat 150, two telescopic upper support arms 200, and a dial indicator 160; the dial indicator 160 is a contact dial indicator.

[0029] The lower support arm 120 is horizontally arranged and connected to the main shaft 110 at one end, which can be raised, lowered, and rotated around the axis of the main shaft 110. The lower support arm 120 is connected to two arc-shaped clamps 121 symmetrically arranged on both sides of the main shaft 110 and fastening bolts 122. The fastening bolts 122 pass through the two clamps 121 by threads and are connected to nuts at the ends of the clamps 121 away from the lower support arm 120. The lower support rod 130 is vertically arranged and its bottom is connected to the end of the lower support arm 120 away from the main shaft 110. The top of the lower support rod 130 is connected to a spherical lower contact 140.

[0030] A rotating base 150 is rotatably connected to the top of the main shaft 110 about a vertical axis. The top surface of the rotating base 150 has a connecting hole 151 penetrating its bottom surface. A protruding section on the inner wall of the connecting hole 151 forms a support portion 152 supporting the top surface of the main shaft 110. Two upper support arms 200 are horizontally arranged and symmetrically connected to both sides of the rotating base 150. The end of each upper support arm 200 away from the rotating base 150 has a connecting hole 220 for the probe 161 at the bottom of a dial indicator 160 to pass through. Each dial indicator 160 is vertically arranged and supported by the upper support arm 200, allowing its bottom probe 161 to pass through the connecting hole 220. In this embodiment, the connecting hole 220 is formed by two clamping plates 230 connected to the end of the upper support arm 200 away from the rotating base 150 and the end face of the upper support arm 200. A limiting bolt 240 is also connected to the two clamping plates to limit the position of the probe 161 passing through the connecting hole 220. In this embodiment, the dial indicator 160 has an accuracy of 0.001 mm and a measurement range of 0~5 mm.

[0031] When using the thickness detection device for thin-walled parts with large curvature provided in this application embodiment, firstly, the length and height of the lower support arm 120 are adjusted according to factors such as the size, thickness, and shape of the part to be detected so that the measured space is sufficient to accommodate the part. Firstly, the nuts connected by the fastening bolts 122 are rotated to loosen the two clamps 121. The lower support arm 120 is then raised and lowered along the main shaft 110 to a preset height. The lower support arm 120 is then pushed to rotate around the main shaft 110 until it is positioned below an upper support arm 200. Then, the nuts are rotated in the opposite direction to tighten the two clamps 121 again, fixing the lower support arm 120 onto the main shaft 110. Next, the dial indicator 160 is vertically positioned on the upper support arm 200 above the lower support arm 120, so that the probe 161 at the bottom of the dial indicator 160 passes through the connecting hole 220 and is positioned above the lower contact 140 at the top of the lower support rod 130 connected to the lower support arm 120. The lower support rod 130 is then extended or retracted to adjust the relative position of the probe 161 of the dial indicator 160 and the lower contact 140. Align the two components, adjust the dial indicator 160 to zero, retract the lower support rod 130, leaving a clamping position for the part between the probe 161 and the lower contact 140 of the dial indicator 160, pass the part through the reserved position between the probe 161 and the lower contact 140, extend the lower support rod 130 so that the upper and lower surfaces of the part contact the probe 161 and the lower contact 140 of the dial indicator 160 respectively, gently swing or move the part appropriately, and read zero from the dial indicator 160. The thickness, step difference, and roughness information of the part are obtained. Then, the part is leveled, and the rotating seat 150 is rotated to drive the upper support arm 200 and the dial indicator 160 supported by it to rotate. The dial indicator 160 rotates in the horizontal plane. The change in the reading on the dial indicator 160 during the rotation is compared with the relevant technical requirements to obtain the shape difference. Alternatively, the upper support arm 200 can be extended and retracted to drive the supported dial indicator 160 to move in a straight line. The change in the reading on the dial indicator 160 during the rotation can be used to obtain the thickness change of the part.

[0032] The device for detecting the thickness of thin-walled parts with large curvature provided in this application embodiment can measure any non-closed thin-walled structural part with a curvature between 45° and 315°.

[0033] The device for detecting the thickness of thin-walled parts with large curvature provided in this application embodiment can measure thin-walled parts with a thickness in the millimeter range.

[0034] Example 2 like Figure 5 and Figure 6As shown, this application provides a device for detecting the thickness of thin-walled parts with large curvature. Its structure is roughly the same as that of the device for detecting the thickness of thin-walled parts with large curvature provided in Embodiment 1. The difference is that in this embodiment, a support base 170 is also provided. The bottom of the support base 170 is provided with a ball groove 180. The lower contact 140 is rotatably engaged with the ball groove 180. The top of the support base 170 is provided with a support ball head 190. The top surface of the main shaft 110 is provided with an angle scale 111 extending in the circumferential direction. The support part 152 is connected to an angle pointer 153. The angle pointer 153 and the two upper support arms 200 are arranged collinearly. The outer wall of the main shaft 110 is provided with a height scale 112 extending in the height direction.

[0035] The device for detecting the thickness of thin-walled parts with large curvature provided in this application embodiment has a support base 170 with a ball groove 180 at the bottom. The support base 170 can be rotatably engaged with the top of the lower contact 140 by means of the ball groove 180. The support ball head 190 connected to the top of the support base 170 supports the concave inner wall of the part. Since the support base 170 is rotatably engaged with the lower contact 140 by means of the ball groove 180, the operator can rotate the support base 170 relative to the lower contact 140 to adjust the angle of the support base 170 in space, so that the support ball head 190 connected to the top of the support base 170 can adapt to the concave surface of thin-walled parts with different curvatures for support.

[0036] The top surface of the spindle 110 is provided with an angle scale 111 extending circumferentially. An angle pointer 153 is connected to the support part 152. The angle pointer 153 and the two upper support arms 200 are arranged collinearly. When the operator rotates the rotary seat 150 to rotate the upper support arms 200 in the horizontal plane, the angle pointer 153 connected to the inner wall of the support part 152 can be compared with the angle scale 111 on the top surface of the spindle 110 to confirm the rotation angle, thus facilitating accurate rotation of the preset angle and measurement. The outer wall of the spindle 110 is provided with a height scale 112 extending in the height direction. The height scale 112 allows the operator to easily measure the height of the lower support arm 120, facilitating quick adjustment of the lower support arm 120's height for support and measurement according to parts of different sizes.

[0037] Example 3 like Figure 7As shown, this application provides a device for detecting the thickness of thin-walled parts with large curvature. Its structure is roughly the same as that of the device for detecting the thickness of thin-walled parts with large curvature provided in Embodiment 1. The difference is that in this embodiment, two dial indicators 160 are included, and a rotating base 150 is connected to two upper support arms 200 located at the same height. Each upper support arm 200 is connected to a rotating ring 210. Each rotating ring 210 is rotatably sleeved on the outer wall of the rotating base 150 around a vertical axis. The rotating rings 210 connected to each upper support arm 200 are arranged vertically at intervals.

[0038] The thickness detection device for thin-walled parts with large curvature provided in this application embodiment has two upper support arms 200 that are rotatably connected to the rotating base 150 along the horizontal plane. The two upper support arms 200 can respectively support dial indicators 160 to detect the thickness of the outer wall of the top surface of the part supported by the lower support rod 130 of the lower support arm 120. The probes 161 of the two dial indicators 160 can cooperate to quickly and efficiently detect the thickness of thin-walled parts with large curvature.

[0039] In other alternative embodiments, the number of upper support arms 200 connected to the rotating base 150 at the same height can be three or more. Each upper support arm 200 is connected to a rotating ring 210 that is rotatably fitted around the vertical axis on the outer wall of the rotating base 150. The rotating rings 210 connected to each upper support arm 200 are arranged sequentially or spaced apart along the height direction.

[0040] This application also provides a system for detecting the thickness of thin-walled parts with large curvature, which includes the above-described device for detecting the thickness of thin-walled parts with large curvature.

[0041] The embodiments described above are some, but not all, of the embodiments of this application. The detailed description of the embodiments of this application is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

Claims

1. A device for detecting the thickness of thin-walled parts with large curvature, characterized in that, It includes: Base; The main shaft is arranged vertically and its bottom is connected to the base. At least one retractable lower support arm is arranged horizontally and connected to the main shaft at one end in a way that allows it to be raised, lowered, and rotated about the main shaft; At least one retractable lower support rod is arranged vertically and its bottom is connected to the end of the lower support arm away from the main shaft, and a lower contact is connected to the top of the lower support rod; A rotatable base is rotatably connected to the top of the main shaft about a vertical axis; At least one retractable upper support arm is arranged horizontally and connected to the side of the rotating seat; At least one dial indicator, each of which is configured to be detachably vertically connected to one end of the upper support arm away from the swivel base.

2. The device for detecting the thickness of thin-walled parts with large curvature according to claim 1, characterized in that, It also includes at least one support base, the bottom of which is provided with a ball groove, the lower contact being configured to be rotatably engaged with the ball groove, and the top of which is provided with a support ball head.

3. The device for detecting the thickness of thin-walled parts with large curvature according to claim 1, characterized in that, The top surface of the rotary seat is provided with a connecting hole that penetrates its bottom surface, and the inner wall of the connecting hole protrudes to form a support portion that supports the top surface of the spindle.

4. The device for detecting the thickness of thin-walled parts with large curvature according to claim 3, characterized in that, The top surface of the spindle is provided with an angle scale extending circumferentially, and the support part is connected to an angle pointer.

5. The device for detecting the thickness of thin-walled parts with large curvature according to claim 4, characterized in that, The angle pointer and the two upper arms are arranged collinearly.

6. The device for detecting the thickness of thin-walled parts with large curvature according to claim 1, characterized in that, The lower support arm is connected to two symmetrically arranged arc-shaped clamps and fastening bolts on both sides of the main shaft. The fastening bolts are threaded through and connected to the two clamps at the end away from the lower support arm.

7. The device for detecting the thickness of thin-walled parts with large curvature according to claim 1, characterized in that, The rotating base is connected to two upper support arms symmetrically arranged at its two ends.

8. The device for detecting the thickness of thin-walled parts with large curvature according to claim 6, characterized in that, The rotating base is connected to at least two upper support arms, and each upper support arm is rotatably connected to the rotating base about the main shaft via a rotating ring sleeved on the rotating base.

9. The device for detecting the thickness of thin-walled parts with large curvature according to claim 1, characterized in that, The outer wall of the spindle is provided with a height scale extending along the height direction.

10. A system for detecting the thickness of thin-walled parts with large curvature, characterized in that, It includes a device for detecting the thickness of thin-walled parts with large curvature as described in any one of claims 1 to 9.

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