Perpendicularity measuring device for hole expansion rate sample

Abstract

The utility model relates to the technical field of machining workpiece measurement, in particular to a perpendicularity measuring device for a hole expansion rate sample. A perpendicularity measuring device for a hole expansion rate sample comprises a mounting base, a measuring supporting rod and a measuring part, the mounting base is provided with a sample mounting position, the sample mounting position is provided with a positioning piece, the positioning piece is used for fixing the position of the sample on the sample mounting position, and the measuring supporting rod is arranged in the range of the sample mounting position. The measuring part comprises a measuring piece, a first adjusting piece and a second adjusting piece, the first adjusting piece is used for adjusting the position of the measuring piece in the extending direction of the sample pore channel, and the second adjusting piece is used for adjusting the distance between the measuring end of the measuring piece and the inner wall of the sample pore channel. The size change is small for single-specification and batch manufacturing, timely detection can be achieved after each batch of samples is machined, and the measuring device is simple, easy to manufacture, low in cost and high in measuring precision.

Description

Technical Field

[0001] This disclosure relates to the field of measurement technology for machined workpieces, and in particular to a device for measuring the perpendicularity of a hole expansion ratio sample. Background Technology

[0002] Hole expansion rate is an important parameter for evaluating the formability of thin sheets used in automobiles. Hole expansion tests can directly assess the forming ability of the hole edge when expanding holes in automotive sheet materials. Before punching, after punching, and after hole expansion, the hole expansion rate test of automotive sheet materials requires punching the sample before testing. The main factors affecting hole expansion performance include microstructure, surface quality of punched hole edge, hardness change of the microstructure near the hole edge, and perpendicularity of the sample.

[0003] For determining the perpendicularity of a sample, common optical measurement methods include: laser scanning, which involves illuminating the hole and end face with a laser beam, receiving the reflected laser signal using a sensor, and processing the data with a computer to obtain the geometric shape and perpendicularity information of the hole and end face; visual measurement, which uses a camera and image processing system to acquire and analyze images of the hole and end face to obtain their geometric shape and perpendicularity information; and interferometry, which splits the light beam into a reference beam and an object beam, causing them to interfere again after passing through the reference surface and the object surface respectively, thereby obtaining the morphological information of the object surface.

[0004] However, the aforementioned tests all require specialized and expensive equipment. Not only do they need to be stored in a constant temperature and humidity environment, but the testing speed is also slow, and the operational requirements are very high. This limits their application to workpiece testing during factory production and cannot meet the needs of the production schedule. For single-specification, batch manufacturing, where dimensional variations are small, timely testing after each batch of samples is crucial. Therefore, there is an urgent need for a device that allows for on-demand testing and is easy to use. Utility Model Content

[0005] This disclosure aims to address at least one of the technical problems existing in the prior art or related technologies.

[0006] To this end, this disclosure provides a perpendicularity measuring device for a porosity sample, comprising a mounting base, a measuring rod, and a measuring part. The mounting base has a sample mounting position, and the sample mounting position is provided with a positioning element. The positioning element is used to fix the position of the sample on the sample mounting position. The measuring rod is disposed within the range of the sample mounting position, and the measuring rod is spaced apart from the positioning element. The measuring part includes a measuring element, a first adjusting element, and a second adjusting element. The measuring element is connected to the measuring rod through the first adjusting element and / or the second adjusting element. The first adjusting element is used to adjust the position of the measuring element in the extension direction of the sample channel, and the second adjusting element is used to adjust the distance between the measuring end of the measuring element and the inner wall of the sample channel.

[0007] In one feasible implementation, the measuring support rod is rotatably connected to the sample mounting position.

[0008] In one feasible embodiment, the sample mounting position is provided with a base turntable, the positioning element is disposed on the base turntable, and the base turntable is used to make the sample rotate horizontally relative to the mounting base.

[0009] In one feasible implementation, the base turntable has multiple rotating connecting discs, the diameter of which gradually increases outward from the center point of the sample mounting position, and each of the multiple rotating connecting discs is provided with a positioning element.

[0010] In one feasible implementation, the measuring support rod is vertically positioned at the sample mounting location.

[0011] In one feasible implementation, the measuring support rod is centrally positioned at the sample mounting location.

[0012] In one feasible implementation, the measuring element is set as a dial indicator.

[0013] In one feasible implementation, an extension measuring plate is further included, which is connected to the measuring end of the dial indicator, and the extension direction of the extension measuring plate is toward the sample mounting position.

[0014] In one feasible implementation, the fastener is configured as a fastener plate, the fastener plate including a first plate, a second plate and a clamping adjustment member, the first plate and the second plate being connected by the clamping adjustment member, the clamping adjustment member being used to adjust the clamping force of the first plate and the second plate.

[0015] In one feasible implementation, the fixing member is configured as a plurality of positioning blocks, and the plurality of positioning members are connected to the sample mounting position by a positioning adjustment member, the positioning adjustment member being used to adjust the relative distance of the positioning block with respect to the center point of the sample mounting position.

[0016] Compared to existing technologies, this disclosure offers at least the following advantages: The measuring support rod is positioned within the sample mounting area, and a positioning element fixes the sample at the mounting position to establish a reference position for measurement. The measuring element measures the circumferential direction of the inner wall of the sample hole using this reference, thereby determining the perpendicularity of the sample hole. Furthermore, a first adjusting element adjusts the position of the measuring element along the extension direction of the sample channel, allowing the measuring end of the measuring element to obtain multiple measurement points along the height direction of the inner wall of the sample hole, effectively improving the accuracy of the measurement data. A second adjusting element adjusts the distance between the measuring end of the measuring element and the inner wall of the sample channel, enabling the measurement of sample holes of different diameters and allowing for adaptive adjustments when using different types of measuring instruments. This disclosure offers advantages such as minimal dimensional variation for single-specification and batch manufacturing, enabling timely testing after each batch of samples is completed. The measuring device is simple to manufacture, low in cost, and offers high measurement accuracy. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0018] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of exemplary embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0020] Figure 1 This is one of the structural schematic diagrams of the side view section of this disclosure;

[0021] Figure 2 This is a schematic diagram of the side cross-section of the sample of this disclosure fixed at the position to be tested;

[0022] Figure 3 This is one of the structural schematic diagrams of the base turntable disclosed herein;

[0023] Figure 4 This is the second schematic diagram of the base turntable of this disclosure.

[0024] in, Figures 1 to 4 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0025] 100-sample;

[0026] 1-Mounting base; 11-Sample mounting position; 2-Measuring support rod; 31-Measuring component; 32-First adjusting component; 33-Second adjusting component; 4-Positioning component; 5-Base turntable; 51-Rotating connecting plate; 6-Extend measuring plate. Detailed Implementation

[0027] To better understand the above-mentioned objectives, features, and advantages of this disclosure, the solutions disclosed herein will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0028] Numerous specific details are set forth in the following description in order to provide a full understanding of this disclosure, but this disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some, and not all, of the embodiments of this disclosure.

[0029] Currently, optical methods are commonly used to measure the perpendicularity of samples. These primarily include: laser scanning, which involves illuminating a laser beam onto the hole and end face, using a sensor to receive the reflected laser signal, and then processing the data with a computer to obtain the geometric shape and perpendicularity information of the hole and end face; visual measurement, which uses a camera and image processing system to acquire and analyze images of the hole and end face to obtain their geometric shape and perpendicularity information; and interferometry, which splits a light beam into a reference beam and an object beam, causing them to interfere again after passing through the reference surface and the object surface respectively, thereby obtaining the morphological information of the object surface.

[0030] However, the aforementioned tests all require specialized and expensive equipment. Not only do they need to be stored in a constant temperature and humidity environment, but the testing speed is also slow, and the operational requirements are very high. This limits their application to workpiece testing during factory production and cannot meet the needs of the production schedule. For single-specification, batch manufacturing, where dimensional variations are small, timely testing after each batch of samples is crucial. Therefore, there is an urgent need for a device that allows for on-demand testing and is easy to use.

[0031] Based on this, this disclosure provides a perpendicularity measuring device for a porosity sample. The measuring support rod is positioned within the sample mounting area, and a positioning element fixes the sample at the mounting position to establish a reference position for measurement. The measuring element measures the circumferential direction of the inner wall of the sample hole using this reference, thereby determining the perpendicularity of the sample hole. Furthermore, a first adjusting element adjusts the position of the measuring element along the extension direction of the sample hole, allowing the measuring end of the measuring element to obtain multiple measurement points along the height direction of the inner wall of the sample hole, effectively improving the accuracy of the measurement data. A second adjusting element adjusts the distance between the measuring end of the measuring element and the inner wall of the sample hole, enabling the measurement of sample holes of different diameters and allowing for adaptive adjustments using different types of measuring instruments.

[0032] The perpendicularity measuring device for the porosity sample is described in detail below through specific embodiments:

[0033] Reference Figures 1 to 4 As shown, this disclosure provides a perpendicularity measuring device for a porosity sample, including a mounting base 1, a measuring rod 2, and a measuring part. The mounting base 1 has a sample mounting position 11, and the sample mounting position 11 is provided with a positioning element 4. The positioning element 4 is used to fix the position of the sample 100 on the sample mounting position 11. The measuring rod 2 is located within the range of the sample mounting position 11, and the measuring rod 2 is spaced apart from the positioning element 4. The measuring part includes a measuring element 31, a first adjusting element 32, and a second adjusting element 33. The measuring element 31 is connected to the measuring rod 2 through the first adjusting element 32 and / or the second adjusting element 33. The first adjusting element 32 is used to adjust the position of the measuring element 31 in the extension direction of the sample 100 channel, and the second adjusting element 33 is used to adjust the distance between the measuring end of the measuring element 31 and the inner wall of the sample 100 channel.

[0034] The mounting base 1 of this disclosure can be configured as a plate-like structure, such as a rectangular, circular, or polygonal plate. Specifically, a rectangular plate is selected as the mounting base. The top surface of the mounting base 1 is provided with a sample mounting position 11 for placing and measuring the sample. The bottom plate of the mounting base 1 can be provided with a connecting rod or a base for easy fixation in the usage environment. For example, the bottom of the mounting base 1 is provided with a bolt post, which can be screwed into bolt holes on an existing machine tool. Specifically, the sample mounting position 11 of this disclosure can be configured as a concave surface or a flat surface. A concave surface can be better adapted to the sample 100 to be measured, serving to fix and guide the sample 100 during installation; while a flat surface can better select and adjust the placement position of the sample 100. The specific implementation method is selected based on the specific shape of the sample. In the embodiments of this disclosure, the measurement movement amplitude of the measuring element is small, and the requirement for fixing the sample position is low. Therefore, this disclosure specifically sets the sample mounting position 11 as the top surface of the mounting base 1 and makes it a flat surface.

[0035] The measuring support rod 2 of this disclosure is positioned within the sample mounting position 11 to ensure that the detection unit connected to it can measure the hole of the sample 100. However, placing the detection support rod 2 outside the sample mounting position requires the addition of an extension or lifting component, which would adversely affect the measurement accuracy. The positioning component 4 fixes the sample 100 at the measurement position on the sample mounting position 11 to locate the reference position for measurement. Using the reference of the measuring component 31, the circumferential measurement of the inner wall of the hole of the sample 100 is performed to determine the perpendicularity of the sample hole. Specifically, the measuring component 31 can use a laser rangefinder, dial indicator, or other detection components to measure the perpendicularity of the hole of the sample 100. For example, a laser rangefinder can be used to measure multiple points around the hole of the sample 100 for comparison. This can be achieved by using a single laser rangefinder connected to the detection support rod 2 via a turntable for rotational measurement, or by using multiple measuring probes to measure multiple points around the hole of the sample 100. The first adjusting component of this disclosure is used to adjust the position of the measuring component in the extension direction of the sample channel, so that the measuring end of the measuring component can obtain multiple measurement points to collect measurement samples in the height direction of the inner wall of the sample hole, effectively improving the accuracy of the measurement data. The second adjusting component is used to adjust the distance between the measuring end of the measuring component and the inner wall of the sample channel, so that sample holes of different diameters can be measured, and different types of measuring instruments can be used for adaptive adjustments. This disclosure allows for minimal dimensional variation in single-specification and batch manufacturing, timely testing after each batch of samples is completed, and the measuring device is simple, easy to manufacture, low in cost, and highly accurate.

[0036] In some embodiments, the measuring rod 2 is rotatably connected to the sample mounting position 11. In this embodiment, the measuring rod 2 of this disclosure is rotatably connected to the sample mounting position 11. Specifically, the measuring rod 2 can be connected to the sample mounting position 11 via a turntable or a rotating shaft, so that a single fixed testing element 31, such as a dial indicator, can perform circumferential testing of the sidewalls of the holes in the sample 100.

[0037] In some embodiments, the sample mounting position 11 is provided with a base turntable 5, and the positioning member 4 is provided on the base turntable 5. The base turntable 5 is used to make the sample 100 rotate horizontally relative to the mounting base 1.

[0038] In this embodiment, such as Figure 3 As shown, the sample mounting position 11 of this disclosure is provided with a base turntable 5, and the positioning element 4 is disposed on the base turntable 5. In this embodiment, the measuring support rod 2 does not rotate during measurement, the measuring element is fixed, and the sample 100 disposed on the base turntable 5 is measured by rotation. Specifically, the base turntable 5 can be set as a horizontal turntable, which can be driven electrically or manually; this disclosure specifically uses electric drive. In another embodiment of this embodiment, the base turntable 5 can be implemented by a combination of a rotating shaft and a receiving plate. For example, the mounting plate is connected to the mounting base 1 through a rotating shaft, and the sample 100 is placed on the mounting plate and fixed by the fixing element 4.

[0039] In some embodiments, the base turntable 5 has a plurality of rotating connecting discs 51, the diameter of which gradually increases outward from the center point of the sample mounting position 11, and each of the plurality of rotating connecting discs 51 is provided with a positioning element 4.

[0040] In this embodiment, such as Figure 3 As shown, the base turntable 5 has multiple rotating connecting discs 51, the diameter of which gradually increases outward from the center point of the sample mounting position 11, and each rotating connecting disc 51 is provided with a positioning element 4. Specifically, the multiple rotating connecting discs 51 have a ring structure, and the multiple rotating connecting discs 51 are combined to form the base turntable 5. Each rotating connecting disc 51 can rotate independently, and each rotating connecting disc 51 is provided with a positioning element 4, thereby accommodating the measurement of sample 100 holes of different diameters, further improving the adaptability of this disclosure for the measurement of sample 100.

[0041] In some embodiments, the measuring rod 2 is vertically disposed at the sample mounting position 11, thereby enabling better positioning of the test piece 31. Furthermore, the measuring rod 2 is centrally disposed at the sample mounting position 11 to serve as the central reference point for placing the sample 100 at the sample mounting position 11, thereby ensuring that the test piece 31 is equidistant from the inner wall of the hole in the sample 100 in all orientations.

[0042] In some embodiments, the measuring element 31 is configured as a dial indicator. A dial indicator is a length measuring instrument that converts general linear displacement (linear motion) into the rotational motion of a pointer through gears or levers, and then reads the value on a scale. It can effectively check the shape and positional errors of a workpiece.

[0043] In some embodiments, an extension measuring plate 6 is also included, which is connected to the measuring end of a dial indicator, and the extension direction of the extension measuring plate 6 is toward the sample mounting position 11.

[0044] In this embodiment, the extended measuring plate 6 is connected to the measuring end of the dial indicator, and the extension direction of the extended measuring plate 6 is towards the sample mounting position 11. When measuring a small hole in the sample 100, the detection element 31, such as the dial indicator, cannot enter the interior of the hole for measurement. Using the extended measuring plate 6 as an extension of the dial indicator's detection end solves this problem. Specifically, the surface of the extended measuring plate 6 is set perpendicular to the horizontal plane to ensure measurement accuracy.

[0045] In some embodiments, the fixing member is configured as a fixing plate, which includes a first plate, a second plate, and a clamping adjustment member. The first plate and the second plate are connected by the clamping adjustment member, which is used to adjust the clamping force between the first plate and the second plate. Specifically, the clamping adjustment member can be a bolt post, which is fixed by a nut to achieve clamping between the first plate and the second plate.

[0046] In some embodiments, the fixing member is configured as a plurality of positioning blocks, and the plurality of positioning members 4 are connected to the sample mounting position 11 by a positioning adjustment member, which is used to adjust the relative distance between the positioning blocks and the center point of the sample mounting position 11.

[0047] In this embodiment, such as Figure 3 As shown, multiple positioning elements 4 are connected to the sample mounting position 11 via positioning adjustment elements. The positioning adjustment elements are used to adjust the relative distance between the positioning block and the center point of the sample mounting position 11. The positioning elements in this embodiment can be applied to the sample mounting position 11 of the first embodiment of this disclosure. For example, multiple positioning element slots are provided on the sample mounting position, and the position of the positioning element 4 is adjusted by engaging with the slots at different positions. Alternatively, the position can be adjusted by sliding the positioning element 4 with a slide rail, and then the positioning element 4 is fixed in position on the slide rail by screws or set screws. Alternatively, in embodiments of the larger device of this disclosure, slide rails can be provided in all directions of the sample mounting position 11, and the positioning elements 4 are connected to the slide rails via lead screws and stepper motors for automated adjustment. The positioning element 4 of this embodiment is also applicable to various embodiments of the base turntable 5; the above adjustment scheme can be implemented by setting it on the base turntable 5.

[0048] The calculation scheme for obtaining measurement data using the technical solution of this disclosure can be adapted to the specific requirements of the sample 100. For example, rotate the measuring instrument one revolution along the inner hole and record the maximum reading Lmax and the minimum reading Lmin (record the two values ​​in the 180° direction). If the two readings are on the same side of the zero position, the perpendicularity error f between the hole and the end face is half of the difference between the maximum reading and the minimum reading, i.e., f = (Lmax - Lmin) / 2. If the readings are on opposite sides of the zero position, the perpendicularity error between the hole and the end face is half of the sum of the absolute values ​​of the two readings, i.e., f = (Lmax + Lmin) / 2.

[0049] In this disclosure, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise expressly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0050] In the description of this disclosure, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0051] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above 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 one or more embodiments or examples.

[0052] The above are merely preferred embodiments of this disclosure and are not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A device for measuring the perpendicularity of a porosity sample, characterized in that, The installation base has a sample installation site, and the sample installation site is provided with a positioning member for fixing the position of the sample on the sample installation site, and the measurement support is arranged in the range of the sample installation site and is arranged in a spaced manner with the positioning member, wherein, The measurement part includes a measuring member, a first adjusting member and a second adjusting member, the measuring member is connected to the measurement support through the first adjusting member and / or the second adjusting member, the first adjusting member is used to adjust the position of the measuring member in the extension direction of the sample hole, and the second adjusting member is used to adjust the distance between the measuring end of the measuring member and the inner wall of the sample hole.

2. The device for measuring the perpendicularity of a hole expansion ratio test piece according to claim 1, wherein The measurement support is rotationally connected to the sample installation site.

3. The device for measuring the perpendicularity of a hole expansion ratio test piece according to claim 1, wherein The sample installation site is provided with a base turntable, the positioning member is arranged on the base turntable, and the base turntable is used to rotate the sample horizontally relative to the installation base.

4. The device for measuring the perpendicularity of a hole expansion ratio test piece according to claim 3, wherein The base turntable has a plurality of rotationally connected discs, the diameters of the plurality of rotationally connected discs gradually increase outward from the center point of the sample installation site, and the positioning member is arranged on each of the plurality of rotationally connected discs.

5. The device for measuring the perpendicularity of a hole expansion ratio test piece according to claim 1, wherein The measurement support is arranged vertically on the sample installation site.

6. The device for measuring the perpendicularity of a hole expansion ratio test piece according to claim 5, wherein The measurement support is arranged centrally on the sample installation site.

7. The device for measuring the perpendicularity of a hole expansion ratio specimen according to Claim 1, wherein The measuring member is arranged as a dial gauge.

8. The device for measuring the perpendicularity of a hole expansion ratio test piece according to claim 7, wherein It also includes an extension measurement plate connected to the measuring end of the dial gauge, and the extension direction of the extension measurement plate is towards the sample installation site.

9. The device for measuring the perpendicularity of a hole expansion ratio specimen according to Claim 1, wherein The fixing member is arranged as a fixing member clamping plate, the fixing member clamping plate includes a first plate body, a second plate body and a clamping adjusting member, the first plate body and the second plate body are connected through the clamping adjusting member, and the clamping adjusting member is used to adjust the clamping force of the first plate body and the second plate.

10. The device for measuring the perpendicularity of a hole expansion ratio test piece according to claim 9, wherein The fixing member is arranged as a plurality of positioning blocks, and the plurality of positioning members are connected to the sample installation site through a positioning adjusting member, and the positioning adjusting member is used to adjust the relative distance of the positioning blocks relative to the center point of the sample installation site.

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