Forming Precision Measuring Device and Method for Rotating Surface Parts

Abstract

The present invention provides a forming accuracy measuring device and method for rotary surface parts, including a main body structure, a positioning structure and a measuring structure; the main body structure includes a platform, a support disk, a support, a cantilever beam and a rotating shaft, and the rotating shaft is fixed at the center position of the cantilever beam and is coaxial with the support disk; the positioning structure includes a guide rail, a column, a fixing plate, a rotating handle and a pressing block, and the pressing block is used to press and fix the surface part on the column; the measuring structure includes a contour plate and a plurality of measuring blocks, the contour plate is fixed on the rotating shaft through a positioning pin and a bolt, and the measuring blocks are fixed on the contour plate and are used to collect the surface contour data of the surface part. The forming accuracy measuring device and method for rotary surface parts provided by the present invention realize the rapid, accurate and quantitative measurement of the forming accuracy of different rotary surface parts through fine structural design, significantly improve the measurement accuracy, greatly improve the measurement efficiency and shorten the detection cycle.

Description

Technical Field

[0001] The present invention relates to the technical field of part forming precision measurement, and specifically, to a device and method for measuring the forming precision of rotary surface parts. Background Art

[0002] Rotary surface parts are formed by rotating a generatrix in the shape of a straight line or a curve around a rotation axis in its plane. Such parts are generally formed by processes such as roll bending, stamping, and spinning. After forming, in order to ensure that the parts meet the design and use precision requirements, internal or external inspection templates are generally used to compare and measure their forming precision. This traditional method has the characteristics of simple structure and convenient operation, so it has been widely used in the field of part forming precision measurement.

[0003] However, for rotary surface parts, due to the limitations of the structure of its inspection template, it can only roughly measure the forming contour precision of the parts. This leads to two problems: one is that it cannot provide accurate correction positions and correction amounts for subsequent manual correction of parts; the other is that due to the unclear correction positions and correction amounts, the part correction cycle is long and the surface correction marks are heavy. These problems seriously affect the production efficiency and surface quality of parts.

[0004] Therefore, a new technical solution is needed to improve the above technical problems. Summary of the Invention

[0005] Aiming at the defects in the prior art, the purpose of the present invention is to provide a device and method for measuring the forming precision of rotary surface parts.

[0006] According to a device for measuring the forming precision of rotary surface parts provided by the present invention, it includes a main body structure, a positioning structure, and a measuring structure;

[0007] The main body structure includes a platform, a support disk, a support, a cantilever beam, and a rotating shaft. The support and the support disk are positioned and installed on the platform through bolts and positioning pins. The support disk is installed at the center of the device to support the surface parts. The cantilever beam is installed on the platform through the support. The rotating shaft is fixed at the center position of the cantilever beam and is coaxial with the support disk;

[0008] The positioning structure includes a guide rail, a column, a fixing plate, a rotating handle, and a pressing block. The column moves along the guide rail and is fixed through the fixing plate to determine the radial position of the surface part. The rotating handle is used to adjust the height of the column. The pressing block is used to press and fix the surface part on the column;

[0009] The measuring structure includes a contour plate and a plurality of measuring blocks. The contour plate is fixed on the rotating shaft through positioning pins and bolts. The plurality of measuring blocks are fixed on the contour plate to collect the surface contour data of the surface part.

[0010] Preferably, the platform is of a planar structure, providing a support connection plane. There are two supports on the platform, and positioning pin holes with different heights are provided on the two supports for positioning the installation height of the cantilever beam.

[0011] Preferably, the measuring block includes a dial indicator and a dial indicator fixing plate. The dial indicator in the measuring block includes a high-precision digital display dial indicator or a displacement sensor.

[0012] Preferably, the number of the columns is six. The six columns all move along the guide rail to a predetermined scale position and are fixed through a fixing plate for determining the radial position of the curved surface part.

[0013] Preferably, the main structure further includes an upper fixing block on the rotating shaft and a lower fixing block on the rotating shaft. The rotating shaft is rotatably arranged at the central position of the cantilever beam through the upper fixing block and the lower fixing block on the rotating shaft. The contour plate drives the measuring block to rotate around the rotating shaft and is coaxial with the support disk in terms of dimensions.

[0014] The present invention also provides a measuring method for a forming precision measuring device of a rotating curved surface part. The method applies the above-mentioned forming precision measuring device of a rotating curved surface part, and the method includes the following steps:

[0015] Step S1: Place the part on the support disk, adjust the positions and heights of the six columns on the guide rail according to the scale lines on the guide rail and the columns, and fix the part on the columns through a pressing block until the center of the part is concentric with the support disk.

[0016] Step S2: Install the measuring block on the contour plate adapted to the forming surface of the part, and fix it on the cantilever beam together with the rotating shaft.

[0017] Step S3: Adjust the positioning pin on the support to install the cantilever beam at a preset height, and then finely adjust the height of the column until the measuring block contacts the forming surface of the part.

[0018] Step S4: Rotate the contour plate to observe the change of the dial indicator reading on the measuring block, record the out-of-tolerance value and mark the out-of-tolerance position.

[0019] Preferably, in step S1, when adjusting the position and height of the column, it is precisely adjusted through the scale lines on the column and the guide rail.

[0020] Preferably, in step S1, when fixing the part on the column, use a pressing block to press the flange of the part against the end face of the column.

[0021] Preferably, in step S4, when rotating the contour plate to observe the change of the dial indicator reading on the measuring block, the dial indicator includes a high-precision digital display dial indicator or a displacement sensor.

[0022] Preferably, in the step S4, after recording the out-of-tolerance value and marking the out-of-tolerance position, shape correction is performed.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The forming accuracy measurement device and method for rotary surface parts provided by the present invention realize the rapid, accurate, and quantitative measurement of the forming accuracy of different rotary surface parts through fine structural designs such as adjustable columns, guide rails, profile plates, and high-precision measuring blocks, significantly improving the measurement accuracy, greatly enhancing the measurement efficiency, and shortening the detection cycle.

[0025] 2. The present invention can accurately measure the contour data of the part surface and provide accurate shape correction position and shape correction amount information according to the measurement results, greatly facilitating the subsequent manual shape correction work, reducing the blindness and uncertainty in the shape correction process, lowering the shape correction difficulty, and at the same time improving the shape correction accuracy and efficiency.

[0026] 3. The present invention ensures that the forming accuracy of the part meets the design requirements. Due to the accuracy and pertinence of the shape correction process, the shape correction marks are reduced, the surface quality of the part is improved, and the quality and performance of the final product are more stable and reliable.

[0027] 4. The device of the present invention can realize the accuracy measurement of different rotary surface parts through simple operations such as adjusting the position and height of the column and replacing the profile plate, has strong adaptability and flexibility, meets diverse measurement requirements, reduces the measurement cost, and improves the utilization rate of the measurement equipment and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] By reading the following detailed description of the non-limiting embodiments with reference to the accompanying drawings, other features, objects, and advantages of the present invention will become more apparent:

[0029] Figure 1 is a top view of the structure of the forming accuracy measurement device for rotary surface parts;

[0030] Figure 2 is a front view of the structure of the forming accuracy measurement device for rotary surface parts;

[0031] Figure 3 is a left view of the structure of the forming accuracy measurement device for rotary surface parts;

[0032] Figure 4 is a schematic diagram of the measuring block of the forming accuracy measurement device for rotary surface parts;

[0033] Figure 5 is a schematic diagram of the part to be measured by the forming accuracy measurement device for rotary surface parts;

[0034] Figure 6It is a flowchart for measuring the forming accuracy of rotary surface parts.

[0035] Among them: platform 1; support 2; cantilever beam 3; guide rail 4; support disk 5; rotating shaft 6; fixing block 7 on the rotating shaft; fixing block 8 under the rotating shaft; fixing plate 9; column 10; rotating handle 11; pressing block 12; profile plate 13; measuring block 14; dial indicator fixing plate 15; dial indicator 16; surface part 17. Specific implementation mode

[0036] The present invention will be described in detail below with reference to specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several changes and improvements can still be made. These all belong to the protection scope of the present invention.

[0037] Embodiment 1:

[0038] Referring to Figures 1 - 3 , a device for measuring the forming accuracy of rotary surface parts provided by the present invention includes a main body structure, a positioning structure and a measuring structure; the main body structure includes a platform, a support disk, a support, a cantilever beam and a rotating shaft, the support and the support disk are positioned and installed on the platform through bolts and positioning pins, the support disk is installed at the center of the device for supporting the surface part, the cantilever beam is installed on the platform through the support, and the rotating shaft is fixed at the center position of the cantilever beam and is coaxial with the support disk; the positioning structure includes a guide rail, a column, a fixing plate, a rotating handle and a pressing block, the column moves along the guide rail and is fixed through the fixing plate for determining the radial position of the surface part, the rotating handle is used for adjusting the height of the column, and the pressing block is used for pressing and fixing the surface part on the column; the measuring structure includes a profile plate and a plurality of measuring blocks, the profile plate is fixed on the rotating shaft through positioning pins and bolts, and the plurality of measuring blocks are fixed on the profile plate for collecting the surface profile data of the surface part.

[0039] The platform is a planar structure, providing a support and connection plane. There are two supports on the platform, and positioning pin holes with different heights are provided on the two supports for positioning the installation height of the cantilever beam.

[0040] Referring to Figure 4 , the measuring block includes a dial indicator and a dial indicator fixing plate, and the dial indicator in the measuring block includes a high-precision digital display dial indicator or a displacement sensor.

[0041] The number of columns is six. The six columns all move along the guide rail to a predetermined scale position and are fixed through the fixing plate for determining the radial position of the surface part.

[0042] The main body structure further includes an upper fixing block and a lower fixing block on the rotating shaft. The rotating shaft is rotatably arranged at the central position of the cantilever beam through the upper fixing block and the lower fixing block on the rotating shaft. The contour plate drives the measuring block to rotate around the rotating shaft and is coaxial with the support disk in terms of dimensions.

[0043] Referring to Figure 5 and Figure 6 the present invention also provides a measuring method for a forming precision measuring device of a rotary surface type part. The method applies the forming precision measuring device of the rotary surface type part as described above, and the method includes the following steps:

[0044] Step S1: Place the part on the support disk, adjust the positions and heights of the six columns on the guide rail according to the scale lines on the guide rail and the column, and fix the part on the column through the pressing block until the center of the part is concentric with the support disk; when adjusting the positions and heights of the columns, accurately adjust through the scale lines on the columns and the guide rail. When fixing the part on the column, use the pressing block to press the flanging of the part on the end face of the column.

[0045] Step S2: Install the measuring block on the contour plate adapted to the forming surface of the part, and fix it together with the rotating shaft on the cantilever beam;

[0046] Step S3: Adjust the positioning pin on the support to install the cantilever beam at the preset height and then finely adjust the height of the column until the measuring block touches the forming surface of the part;

[0047] Step S4: Rotate the contour plate to observe the change of the reading of the dial indicator on the measuring block, record the out-of-tolerance value and mark the out-of-tolerance position. When rotating the contour plate to observe the change of the reading of the dial indicator on the measuring block, the dial indicator includes a high-precision digital display dial indicator or a displacement sensor. After recording the out-of-tolerance value and marking the out-of-tolerance position, perform shape correction.

[0048] Compared with the traditional template measurement, after using the present invention, the measurement accuracy of the rotary surface type part can be improved by more than 100 times, and the shape correction period can be shortened by more than 50%.

[0049] Example 2:

[0050] The purpose of the present invention for the patent is to provide a forming precision measuring device and a measuring method for a rotary surface type part. By adjusting the positions and heights of the columns and replacing the contour plate, it is possible to quickly, accurately and quantitatively measure the forming precision of different rotary surface parts, and further provide the shape correction position and shape correction amount information for subsequent manual shape correction.

[0051] The device and method of the present invention can solve the problems that the forming accuracy of rotating curved surface parts cannot be quantitatively measured when using traditional inspection templates, and the problems of unclear alignment positions and uncertain alignment amounts at the alignment parts during manual alignment. That is, on the one hand, it can obtain the high-precision forming profile of the parts to ensure that the forming accuracy meets the design requirements; on the other hand, it can greatly shorten the alignment cycle, reduce alignment marks, improve the forming efficiency of the parts while ensuring the surface quality. In addition, after adjustment, the device can meet the accuracy measurement requirements of different rotating curved surface parts, reduce costs while ensuring high-precision measurement capabilities.

[0052] The forming accuracy measurement device for rotating curved surface parts mainly consists of three parts: a main body structure, a positioning structure, and a measurement structure.

[0053] The main body structure is composed of a platform 1, a support disk 5, a support 2, a cantilever beam 3, a rotating shaft 6, a fixed block 7 on the rotating shaft, a fixed block 8 under the rotating shaft, etc. Among them, the platform 1 is a planar structure, providing a support connection plane for the device. The supports 2 and the support disk 5 are positioned and installed on the platform 1 through bolts and positioning pins. There are positioning pin holes with different heights on the two supports 2 for positioning the installation height of the cantilever beam 3. The support disk 5 is installed at the center of the device, providing support for the curved surface part 17 at the bottom, and at the same time assisting the column 10 to locate the center of the curved surface part 17. The rotating shaft 6 is fixed at the center position of the cantilever beam 3 through the fixed block 7 on the rotating shaft and the fixed block 8 under the rotating shaft, and is coaxial with the support disk 5 in terms of dimensions.

[0054] The positioning structure is composed of a guide rail 4, a column 10, a fixing plate 9, a rotating handle 11, a pressing block 12, etc. Among them, the guide rail 4 is fixed on the platform 1 through positioning pins and bolts. During use, first move the six columns 10 to the predetermined scale positions of the corresponding guide rails 4 and fix them on the guide rails 4 through the fixing plate 9 to determine the radial position of the curved surface part 17; then rotate the rotating handle 11 to adjust the height of the column 10 and ensure that the heights of the six columns 10 are the same according to the scale lines on the column 10, so as to determine the height position of the curved surface part 17; finally, use the pressing block 12 to press and fix the flanging of the curved surface part 17 on the end face of the column 10.

[0055] The measurement structure consists of a profile plate 13 and multiple groups of measurement blocks 14. The profile plate 13 is fixed on the rotating shaft 6 through positioning pins and bolts. The measurement block 14 is an assembly in which a dial indicator 16 is fixed on the profile plate 13 through two profile plate fixing plates 15 in the front and back of the profile plate 13 (for different measurement requirements, the dial indicator 16 in the measurement block 14 can be replaced with other high-precision measurement products such as a high-precision digital display dial indicator or a displacement sensor, so that the measurement block 14 can collect the surface profile data of the curved surface part). The curve formed by the ends of multiple groups of measurement blocks 14 is the rotation generatrix of the curved surface part 17. During use, the profile plate 13 drives the measurement block 14 to rotate around the rotating shaft 6, and the end of the measurement block 14 contacts the surface of the curved surface part 17. The profile accuracy of the curved surface part 17 can be measured according to the reading of the dial indicator 16. The fixing plate 9 is connected to the column 10 with bolts, and the combination of the fixing plate 9 and the column 10 is fixed on the guide rail 4 by tightening the bolts; the pressing block 12 is fixed to the column 10 with countersunk head bolts.

[0056] Forming accuracy measurement method for rotating curved surface parts:

[0057] First, place the part on the support disk, adjust the positions and heights of the six columns on the guide rail according to the scale lines on the guide rail and the column, and fix the part on the column through the pressing block to ensure that the center of the part is concentric with the support disk. Then, install the measurement block on the profile plate adapted to the forming surface of the part, and fix it together with the rotating shaft, the upper fixing block on the rotating shaft, and the lower fixing block on the rotating shaft on the cantilever beam. After that, adjust the positioning pin on the support to install the cantilever beam at an appropriate height, and then finely adjust the height of the column to ensure that the measurement block contacts the forming surface of the part. Each column is provided with a height adjustment scale line. When finely adjusting the height of one column with the handwheel, the other columns can move upward freely, but cannot move downward freely. Finally, only ensure that the finely adjusted height scale lines of the six columns are the same. Finally, rotate the profile plate and observe the change of the reading of the dial indicator (or other high-precision digital display dial indicators, displacement sensors) on the measurement block, record the out-of-tolerance values, and mark the out-of-tolerance positions for manual shape correction. The forming accuracy measurement process of the rotating curved surface part is as Figure 6 shown.

[0058] Those skilled in the art can understand this embodiment as a more specific description of Embodiment 1.

[0059] Those skilled in the art know that, in addition to implementing the system and its various devices, modules, and units provided by the present invention in the form of pure computer-readable program code, the method steps can be logically programmed to enable the system and its various devices, modules, and units provided by the present invention to be implemented in the form of logic gates, switches, application-specific integrated circuits, programmable logic controllers, and embedded microcontrollers, etc., to achieve the same functions. Therefore, the system and its various devices, modules, and units provided by the present invention can be considered as a kind of hardware component, and the devices, modules, and units included therein for implementing various functions can also be regarded as the structures within the hardware component; the devices, modules, and units for implementing various functions can also be regarded as either software modules for implementing the method or structures within the hardware component.

[0060] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. Without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A forming accuracy measuring device for a rotating surface part, characterized in that, It includes a main body structure, a positioning structure, and a measuring structure; The main body structure includes a platform, a support disk, a support, a cantilever beam, and a rotating shaft. The support and the support disk are positioned and installed on the platform through bolts and positioning pins. The support disk is installed at the center of the device to support the curved surface part. The cantilever beam is installed on the platform through the support. The rotating shaft is fixed at the center position of the cantilever beam and is coaxial with the support disk; The positioning structure includes a guide rail, a column, a fixing plate, a rotating handle, and a pressing block. The column moves along the guide rail and is fixed through the fixing plate to determine the radial position of the curved surface part. The rotating handle is used to adjust the height of the column. The pressing block is used to press and fix the curved surface part on the column; The measuring structure includes a contour plate and a plurality of measuring blocks. The contour plate is fixed on the rotating shaft through a positioning pin and a bolt. The plurality of measuring blocks are fixed on the contour plate to collect the surface contour data of the curved surface part; The measuring block includes a dial indicator and a dial indicator fixing plate. The dial indicator in the measuring block includes a high-precision digital display dial indicator or a displacement sensor; The main body structure further includes an upper fixing block and a lower fixing block on the rotating shaft. The rotating shaft is rotatably arranged at the center position of the cantilever beam through the upper fixing block and the lower fixing block on the rotating shaft. The contour plate drives the measuring block to rotate around the rotating shaft and is coaxial with the support disk in terms of size; The number of the columns is six. The six columns all move along the guide rail to a predetermined scale position and are fixed through the fixing plate to determine the radial position of the curved surface part.

2. The forming precision measuring device for rotary surface parts according to claim 1, characterized in that The platform is a planar structure, providing a support and connection plane. There are two supports on the platform. The two supports are provided with positioning pin holes at different heights for positioning the installation height of the cantilever beam.

3. A measuring method for a forming accuracy measuring device of a rotary surface type part, characterized in that, The method applies the rotating curved surface part forming precision measuring device according to any one of claims 1 - 2. The method includes the following steps: Step S1: Place the part on the support disk. Adjust the position and height of the six columns on the guide rail according to the scale lines on the guide rail and the columns, and fix the part on the columns through the pressing block until the center of the part is concentric with the support disk; Step S2: Install the measuring block on the contour plate adapted to the forming surface of the part, and fix it on the cantilever beam together with the rotating shaft; Step S3: Adjust the positioning pin on the support to install the cantilever beam at a preset height, and then finely adjust the height of the column until the measuring block touches the forming surface of the part; Step S4: Rotate the contour plate and observe the change of the dial indicator reading on the measuring block, record the out-of-tolerance value, and mark the out-of-tolerance position; In step S1, when adjusting the position and height of the column, it is precisely adjusted through the scale lines on the column and the guide rail; In step S4, when rotating the contour plate and observing the change of the dial indicator reading on the measuring block, the dial indicator includes a high-precision digital display dial indicator or a displacement sensor.

4. The measuring method of the forming accuracy measuring device for the rotary surface parts according to claim 3, characterized in that, In step S1, when fixing the part on the column, use the pressing block to press the flanging of the part against the end face of the column.

5. The measuring method of the forming accuracy measuring device for the rotational surface part according to claim 3, characterized in that, In step S4, after recording the out-of-tolerance value and marking the out-of-tolerance position, carry out shape correction.

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