A pre-punched camber detection device

Abstract

The application discloses a pre-punching camber surface detection device, which is configured to be connected with a workpiece to be detected, the workpiece to be detected is provided with a pre-punching hole, and a concave camber surface is formed in the circumferential direction of the pre-punching hole. The pre-punching camber surface detection device comprises a support and at least one measuring assembly. The measuring assembly comprises a first sliding body and a dial gauge. The first sliding body is arranged in a spaced manner relative to the concave camber surface and can slide relative to the support to approach or move away from the concave camber surface. The first sliding body is formed with a detection surface which is in close contact with the concave camber surface relative to the concave camber surface. The dial gauge is slidably connected to the first sliding body along the detection surface, and the abutting end of the dial gauge is always in abutment with the surface of the concave camber surface to detect the camber of the concave camber surface. The application can effectively solve the problem that the quality control risk of the press riveting process is increased due to the lack of a detection tool suitable for a complex hole type with a vortex shape, a depth and a camber.

Description

Technical Field

[0001] This invention relates to the field of automotive parts technology, and more specifically to a pre-punched arc surface detection device. Background Technology

[0002] In automotive parts manufacturing, the press-fitting of flanged inlaid round head nuts to the base material is a key connection process. This process requires first machining a vortex-shaped pre-punched hole with a specific depth and complex arc surface on the base material. The contour accuracy directly determines the connection strength and reliability after press-fitting.

[0003] Currently, due to factors such as stamping fluctuations and material springback, pre-punched holes are prone to inconsistent shapes. The industry generally relies on manual visual inspection or offline measurement, lacking rapid and accurate detection methods for swirling, deep, and curved holes. This makes it difficult to achieve real-time quality monitoring in mass production. The lack of this detection capability increases the risk of quality control failure in the riveting process, which can easily lead to adverse consequences such as insufficient connection force and loosening.

[0004] Therefore, there is an urgent need for a rapid and accurate detection method and tooling suitable for complex hole shapes with vortex, depth, and curvature, which would increase the risk of quality control failure in the riveting process. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a pre-punched arc surface detection device to solve the technical problem that the lack of detection tooling suitable for complex hole shapes with vortex, depth and curvature in the prior art leads to an increased risk of quality loss in the riveting process.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: This invention provides a pre-punched arc surface inspection device, configured to connect to a workpiece to be inspected. The workpiece has a pre-punched hole, and the pre-punched hole has a concave arc surface formed circumferentially. The device includes: stents; and At least one measuring component includes a first slider and a dial indicator. The first slider is spaced apart from the concave arc surface and is capable of sliding relative to the bracket towards or away from the concave arc surface. The first slider has a detection surface that fits against the concave arc surface. The dial indicator is slidably connected to the first slider along the detection surface, and the contact end of the dial indicator is always in contact with the surface of the concave arc surface to detect the curvature of the concave arc surface.

[0007] In some embodiments, the bracket includes a first rod, which is placed horizontally and positioned above the concave arc surface. The first sliding body is an arc-shaped strip and is slidably sleeved on the first rod. The first sliding body is disposed in contact with the concave arc surface and extends along the trajectory of the concave arc surface, such that the side of the first sliding body close to the concave arc surface forms the detection surface.

[0008] In some embodiments, the first slider has a first through groove along its length, the dial indicator has an abutment end and a head end, the abutment end passes through the first through groove and always abuts against the concave arc surface, and the head end is located on the other side of the first slider.

[0009] In some embodiments, the measuring assembly further includes a first connector, the first connector including a second slider and a first limiting part, the second slider being slidably sleeved on the first slider and having a second through groove open relative to the first through groove, the abutting end passing through the second through groove and the first through groove in sequence and abutting against the concave arc surface, the side wall of the second slider also having a first threaded hole communicating with the second through groove, the first limiting part being threadedly connected to the first threaded hole and abutting against the first slider to restrict the sliding of the second slider and the dial indicator relative to the first slider.

[0010] In some embodiments, the measuring component further includes a support block connected to the first sliding body and abutting against the workpiece to be tested, such that the concave arc surface is spaced apart from the first sliding body.

[0011] In some embodiments, the support further includes a second rod, which is disposed perpendicular to the first rod and connected to the first rod. The measuring component further includes a driving member, which is connected to the second rod and the first sliding body, for driving the first sliding body to slide relative to the first rod.

[0012] In some embodiments, the driving member includes a third sliding body and a connecting body. The third sliding body is slidably connected to the second rod body. One end of the connecting body is hinged to the third sliding body and the other end is hinged to the first sliding body. The third sliding body slides along the second rod body to drive the first sliding body to move closer to or away from the concave arc surface relative to the first rod body.

[0013] In some embodiments, the third sliding body has a third through groove, and the third sliding body is slidably sleeved on the second rod body through the third through groove. The third sliding body has a second threaded hole communicating with the third through groove. The driving member further includes a second limiting part, which is threadedly connected to the second threaded hole and abuts against the second rod body to restrict the sliding of the third sliding body relative to the second rod body.

[0014] In some embodiments, the second rod is detachably connected to the first rod.

[0015] In some embodiments, the number of measuring components is two, the second rod is disposed at the center of the first rod, and the two first sliding bodies are symmetrically distributed along the second rod.

[0016] Compared with the prior art, the beneficial effects of the pre-punched arc surface detection device provided by the present invention include: at least one first sliding body is spaced apart from the concave arc surface and slidably connected to the bracket; the first sliding body forms a detection surface that fits against the concave arc surface; a dial indicator is slidably connected to the first sliding body along the guide of the detection surface; and the contact end of the dial indicator is always in contact with the surface of the concave arc surface to detect the curvature of the concave arc surface. Compared to existing technologies, this new technology uses a first sliding body spaced at intervals on the concave arc surface of the workpiece to be inspected. A dial indicator slides along the guide surface of the inspection surface, with the contact end of the dial indicator always in contact with the surface of the concave arc surface, to detect the curvature of the concave arc surface. This allows for rapid inspection of complex hole types with vortex-like shapes, depth, and curvature. At the same time, the first sliding body can slide closer to or further away from the concave arc surface relative to the support, enabling the inspection device to adapt to workpieces of different sizes and curvatures. This solves the technical problem in existing technologies where the lack of inspection fixtures suitable for complex hole types with vortex-like shapes, depth, and curvature leads to an increased risk of quality control failure in the riveting process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a pre-punched arc surface detection device provided in an embodiment of the present invention; Figure 2 This is a cross-sectional view of the first slider, the second slider, the dial indicator, and the first limiting part connected according to an embodiment of the present invention; Figure 3 This is a cross-sectional view of the second rod, the third sliding body, the connecting body, and the second limiting part connected according to an embodiment of the present invention; Figure 4 This is a schematic diagram of a pre-punched arc surface detection device connected to a workpiece to be detected, according to an embodiment of the present invention.

[0018] Explanation of reference numerals in the attached figures: Workpiece to be inspected 100; pre-punched hole 110; concave arc surface 120; bracket 200; first rod 210; second rod 220; measuring component 300; first sliding body 310; dial indicator 320; first connecting piece 330; second sliding body 331; first limiting part 332; support block 340; driving component 350; third sliding body 351; connecting body 352; second limiting part 353. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0020] To address the technical problem of increased risk of quality control issues in the riveting process due to the lack of suitable inspection fixtures for complex hole types with vortex-like, deep, and curved shapes, this invention provides a pre-punched hole 110 arc surface inspection device. A first sliding body 310 is spaced apart from the concave arc surface 120 of the workpiece 100 to be inspected. A dial indicator 320 slides along the guide surface of the inspection device, with the contact end of the dial indicator 320 always in contact with the surface of the concave arc surface 120, to detect the curvature of the concave arc surface 120. This allows for rapid inspection of complex hole types with vortex-like, deep, and curved shapes. Simultaneously, the first sliding body 310 can slide relative to the support 200, moving closer to or further away from the concave arc surface 120, enabling the inspection device to adapt to workpieces 100 of different sizes and curvatures.

[0021] Please see Figure 1 , Figure 1 , Figure 4 This is a schematic diagram of a pre-punched hole 110 arc surface detection device according to an embodiment of the present invention. The pre-punched hole 110 arc surface detection device is configured to connect to a workpiece 100 to be tested. The workpiece 100 to be tested has a pre-punched hole 110. A concave arc surface 120 is formed circumferentially in the pre-punched hole 110. The device includes a support 200 and at least one measuring component 300. The measuring component 300 includes a first sliding body 310 and a dial indicator 320. The first sliding body 310 is spaced apart from the concave arc surface 120 and can slide relative to the support 200 closer to or further away from the concave arc surface 120. The first sliding body 310 forms a detection surface that fits against the concave arc surface 120. The dial indicator 320 is slidably connected to the first sliding body 310 along the guide of the detection surface, and the contact end of the dial indicator 320 is always in contact with the surface of the concave arc surface 120 to detect the curvature of the concave arc surface 120.

[0022] In this device, compared with the prior art, by setting first sliding bodies 310 at intervals relative to the concave arc surface 120 of the workpiece 100 to be inspected, and using a dial indicator 320 to slide along the guide surface of the inspection surface, with the contact end of the dial indicator 320 always in contact with the surface of the concave arc surface 120, the curvature of the concave arc surface 120 can be detected. This enables rapid detection of complex hole types with vortex-like, deep, and curved shapes. At the same time, the first sliding body 310 can slide closer to or further away from the concave arc surface 120 relative to the support 200, so that the inspection device can be adapted to workpieces 100 with different sizes and curvatures. This solves the technical problem in the prior art where the lack of inspection tooling suitable for complex hole types with vortex-like, deep, and curved shapes leads to an increased risk of quality control failure in the riveting process.

[0023] Furthermore, in the production of automotive parts, there is a common connection process where flanged insert-type round head nuts need to be pre-punched 110 before being press-fitted to the base material. The pre-punched hole 110 of the base material is usually a spiral-shaped, deep, and curved round hole. When the consistency of the punched holes in each batch is poor or the elasticity of the base material is disordered, it will cause poor performance of subsequent press-fitting. Here, the workpiece 100 to be tested has a pre-punched hole 110, and the circumferential direction of the pre-punched hole 110 forms a concave arc surface 120. The bracket 200 is spaced apart from the workpiece 100 to be tested, and the first sliding body 310 is spaced apart from the concave arc surface 120 to test the curvature of the concave arc surface 120.

[0024] Furthermore, the dial indicator 320 here is a common and readily available length measuring tool on the market, which typically consists of a probe, measuring rod, shock-absorbing spring, rack, gear, hairspring, dial and pointer, etc. This is a conventional setup known to those skilled in the art, and will not be described in detail here.

[0025] In this embodiment, as Figure 1 , Figure 4 As shown, the bracket 200 includes a first rod 210, which is placed horizontally and positioned above the concave arc surface 120. The first sliding body 310 is an arc-shaped strip and is slidably sleeved on the first rod 210. The first sliding body 310 is set in contact with the concave arc surface 120 and extends along the trajectory of the concave arc surface 120, so that the side of the first sliding body 310 close to the concave arc surface 120 forms a detection surface.

[0026] The first rod 210 is used to connect and support the first sliding body 310, so that the first sliding body 310 can slide relative to the workpiece 100 to be inspected.

[0027] Furthermore, the first sliding body 310 is in the shape of an arc strip, which is used to match the concave arc surface 120 of the workpiece 100 to be inspected, so that the shape of the first sliding body 310 can perfectly fit the concave arc surface 120 to achieve the purpose of inspection.

[0028] In addition, in some embodiments, the specific dimensions of the first sliding body 310 are reasonably adjusted according to the specific object to be measured, which will not be elaborated here.

[0029] Furthermore, the surface of the first sliding body 310 is provided with scale markings, so that the left and right dial gauges 320 can be accurately positioned to the same latitude (angle) for measurement, thereby detecting the consistency of the arc of the hole on the symmetrical plane, which will not be elaborated here.

[0030] In this embodiment, as Figure 1 , Figure 2 As shown, the first sliding body 310 has a first through groove along its length direction, the dial indicator 320 has an abutment end and a head end, the abutment end passes through the first through groove and is always in contact with the concave arc surface 120, and the head end is located on the other side of the first sliding body 310.

[0031] The first through groove is provided to achieve a sliding connection between the dial indicator 320 and the first sliding body 310.

[0032] Furthermore, the abutting end passes through the first through groove and is always in contact with the concave arc surface 120, and the head end is located on the other side of the first sliding body 310, which can prevent the dial indicator 320 from separating from the first sliding body 310 during the sliding process.

[0033] In one embodiment, such as Figure 2 As shown, the measuring assembly 300 also includes a first connector 330, which includes a second slider 331 and a first limiting part 332. The second slider 331 is slidably sleeved on the first slider 310 and has a second through groove opened relative to the first through groove. The abutting end passes through the second through groove and the first through groove in sequence and abuts against the concave arc surface 120. The side wall of the second slider 331 also has a first threaded hole that communicates with the second through groove. The first limiting part 332 is threadedly connected to the first threaded hole and abuts against the first slider 310 to restrict the sliding of the second slider 331 and the dial indicator 320 relative to the first slider 310.

[0034] By setting the second sliding body 331, the connection stability between the dial indicator 320 and the first sliding body 310 can be enhanced. The first limiting part 332 is threadedly connected to the second sliding body 331 and abuts against the side wall of the first sliding body 310, which can restrict the sliding between the second sliding body 331 and the first sliding body 310.

[0035] Furthermore, the cross-section of the first through groove is wedge-shaped and is configured to match the cross-section of the first sliding body 310.

[0036] In some embodiments, the first limiting part 332 is a bolt or wing nut that is common in the market and easy to purchase, which will not be described in detail here.

[0037] In one embodiment, such as Figure 1 , Figure 4 As shown, the measuring component 300 also includes a support block 340, which is connected to the first sliding body 310 and abuts against the workpiece 100 to be tested, so that the concave arc surface 120 is spaced apart from the first sliding body 310.

[0038] The support block 340 is used to support the first sliding body 310, so that the detection surface of the first sliding body 310 and the concave arc surface 120 form a certain distance and can remain parallel to each other.

[0039] Furthermore, the support block 340 and the first sliding body 310 are an integral structure.

[0040] In one embodiment, such as Figure 1 , Figure 4 As shown, the bracket 200 also includes a second rod 220, which is perpendicular to the first rod 210 and connected to the first rod 210. The measuring component 300 also includes a driving member 350, which is connected to the second rod 220 and the first sliding body 310 and is used to drive the first sliding body 310 to slide relative to the first rod 210.

[0041] The second rod 220 is used to connect and support the drive member 350 and the first sliding body 310.

[0042] In one embodiment, such as Figure 1 , Figure 3 As shown, the driving component 350 includes a third sliding body 351 and a connecting body 352. The third sliding body 351 is slidably connected to the second rod 220. One end of the connecting body 352 is hinged to the third sliding body 351 and the other end is hinged to the first sliding body 310. The third sliding body 351 slides along the second rod 220 to drive the first sliding body 310 to move closer to or away from the concave arc surface 120 relative to the first rod 210.

[0043] The first sliding body 310, the first rod 210, the third sliding body 351, the second rod 220 and the connecting body 352 form a crank-connecting rod structure, so that the sliding of the third sliding body 351 along the second rod 220 can be converted into the sliding of the first sliding body 310 along the first rod 210, so as to adapt to the workpiece 100 to be tested of different sizes.

[0044] Furthermore, the connecting body 352 and its two ends are rotatably connected to the first sliding body 310 and the third sliding body 351 respectively via rotating shafts.

[0045] In addition, in some embodiments, in order to reduce the friction when the third sliding body 351 slides along the second rod 220 or the first sliding body 310 slides along the first rod 210, a ball bearing is provided between the first sliding body 310 and the first rod 210, and a ball bearing is provided between the third sliding body 351 and the second rod 220, which will not be described in detail here.

[0046] In some embodiments, the connector 352 includes a first segment and a second segment, wherein the angle between the extension line of the second segment and the first rod 210 is smaller than the angle between the extension line of the first segment and the first rod 210.

[0047] In one embodiment, such as Figure 3 As shown, the third sliding body 351 has a third through groove, and the third sliding body 351 is slidably sleeved on the second rod 220 through the third through groove. The third sliding body 351 has a second threaded hole that communicates with the third through groove. The driving member 350 also includes a second limiting part 353, which is threadedly connected to the second threaded hole and abuts against the second rod 220 to restrict the sliding of the third sliding body 351 relative to the second rod 220.

[0048] To prevent the third sliding body 351 from sliding relative to the second rod 220 during the detection process, the third sliding body 351 and the second rod 220 are connected by a second limiting part 353.

[0049] Furthermore, the second limiting part 353 here is a bolt or wing nut that is common in the market and easy to purchase, which will not be described in detail here.

[0050] In one embodiment, such as Figure 1 , Figure 4 As shown, the second rod 220 is detachably connected to the first rod 210.

[0051] To facilitate device maintenance or assembly, the second rod 220 and the first rod 210 are detachably connected.

[0052] Furthermore, at least one third threaded hole is provided at one end of the second rod 220, and a through hole is provided on the first rod 210 opposite to the third threaded hole. The threaded section of the screw or bolt passes through the through hole and is threadedly connected to the third threaded hole.

[0053] In addition, in some embodiments, in order to enhance the connection strength, there are multiple third threaded holes, which are distributed in a triangular or square array.

[0054] In one embodiment, such as Figure 1 , Figure 4 As shown, there are two measuring components 300. The second rod 220 is located at the center of the first rod 210, and the two first sliding bodies 310 are symmetrically distributed along the second rod 220.

[0055] Two first sliding bodies 310 are symmetrically distributed on both sides of the workpiece 100 to be inspected. In order to ensure that the distance from the center of the two first sliding bodies 310 to the second rod 220 is always equal, the accuracy of the inspection is improved.

[0056] To better understand this invention, the following is combined with... Figures 1 to 4 The technical solution of the present invention will be described in detail below: At least one first sliding body 310 is spaced apart from the concave arc surface 120 and slidably connected to the bracket 200. The first sliding body 310 forms a detection surface that fits against the concave arc surface 120. The dial indicator 320 is slidably connected to the first sliding body 310 along the guide of the detection surface, and the contact end of the dial indicator 320 is always in contact with the surface of the concave arc surface 120 to detect the curvature of the concave arc surface 120. Compared to existing technologies, by setting first sliding bodies 310 at intervals relative to the concave arc surface 120 of the workpiece 100 to be tested, and using a dial indicator 320 to slide along the guide surface of the test surface, with the contact end of the dial indicator 320 always in contact with the surface of the concave arc surface 120, the curvature of the concave arc surface 120 can be detected. This allows for rapid detection of complex hole types with vortex shape, depth, and curvature. At the same time, the first sliding body 310 can slide relative to the support 200 closer to or further away from the concave arc surface 120, making the testing device adaptable to workpieces 100 of different sizes and curvatures.

[0057] In the specific workflow of this invention, during use, the worker first selects a first sliding body 310 that fits against the concave arc surface 120 of the workpiece 100 to be inspected. Then, the user slides a third sliding body 351 along the guide of the second rod 220, causing the sliding third sliding body 351 to bring the detection surface of the first sliding body 310 into contact with the concave arc surface 120, and causing the contact end of the dial indicator 320 to contact the concave arc surface 120. Then, the position of the third sliding body 351 is locked by the second limiting part 353, and the second sliding body 331 is slid along the guide of the detection surface, so that the dial indicator 320 continuously adjusts its position relative to the concave arc surface 120. Finally, the positions of the second sliding body 331 and the dial indicator 320 are locked by the first limiting part 332, completing the rapid inspection of the concave arc surface 120.

[0058] This application, through the aforementioned structure, can solve the technical problem in the prior art where the lack of inspection fixtures suitable for complex hole types with vortex shape, depth, and curvature leads to an increased risk of quality control failure in the riveting process.

[0059] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A pre-punched arc surface detection device, configured to connect to a workpiece to be inspected, the workpiece having a pre-punched hole, the pre-punched hole having a concave arc surface formed circumferentially, characterized in that, include: support; as well as At least one measuring component includes a first slider and a dial indicator. The first slider is spaced apart from the concave arc surface and is capable of sliding relative to the bracket towards or away from the concave arc surface. The first slider has a detection surface that fits against the concave arc surface. The dial indicator is slidably connected to the first slider along the detection surface, and the contact end of the dial indicator is always in contact with the surface of the concave arc surface to detect the curvature of the concave arc surface.

2. The pre-punched arc surface detection device according to claim 1, characterized in that, The bracket includes a first rod, which is placed horizontally and positioned above the concave arc surface. The first sliding body is an arc-shaped strip and is slidably sleeved on the first rod. The first sliding body is fitted to the concave arc surface and extends along the trajectory of the concave arc surface, so that the side of the first sliding body close to the concave arc surface forms the detection surface.

3. The pre-punched arc surface detection device according to claim 2, characterized in that, The first sliding body has a first through groove along its length. The dial indicator has an abutment end and a head end. The abutment end passes through the first through groove and is always in contact with the concave arc surface, while the head end is located on the other side of the first sliding body.

4. The pre-punched arc surface detection device according to claim 3, characterized in that, The measuring assembly further includes a first connector, which includes a second slider and a first limiting part. The second slider is slidably sleeved on the first slider and has a second through groove open relative to the first through groove. The abutting end passes through the second through groove and the first through groove in sequence and abuts against the concave arc surface. The side wall of the second slider also has a first threaded hole communicating with the second through groove. The first limiting part is threadedly connected to the first threaded hole and abuts against the first slider to restrict the sliding of the second slider and the dial indicator relative to the first slider.

5. The pre-punched arc surface detection device according to claim 2, characterized in that, The measuring component further includes a support block connected to the first sliding body and abutting against the workpiece to be tested, such that the concave arc surface is spaced apart from the first sliding body.

6. The pre-punched arc surface detection device according to claim 4, characterized in that, The bracket further includes a second rod, which is perpendicular to the first rod and connected to the first rod. The measuring component further includes a driving member, which is connected to the second rod and the first sliding body, and is used to drive the first sliding body to slide relative to the first rod.

7. The pre-punched arc surface detection device according to claim 6, characterized in that, The driving component includes a third sliding body and a connecting body. The third sliding body is slidably connected to the second rod. One end of the connecting body is hinged to the third sliding body and the other end is hinged to the first sliding body. The third sliding body slides along the second rod to drive the first sliding body to move closer to or away from the concave arc surface relative to the first rod.

8. The pre-punched arc surface detection device according to claim 7, characterized in that, The third sliding body has a third through groove, and the third sliding body is slidably sleeved on the second rod body through the third through groove. The third sliding body has a second threaded hole that communicates with the third through groove. The driving member also includes a second limiting part, which is threadedly connected to the second threaded hole and abuts against the second rod body to restrict the sliding of the third sliding body relative to the second rod body.

9. The pre-punched arc surface detection device according to claim 6, characterized in that, The second rod is detachably connected to the first rod.

10. The pre-punched arc surface detection device according to claim 8, characterized in that, The measuring components are in the form of two parts, with the second rod positioned at the center of the first rod, and the two first sliding bodies symmetrically distributed along the second rod.

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