Device and method for measuring forming precision of rotating curved surface type part

Abstract

The invention provides a rotating curved surface type part forming precision measuring device and method. The rotating curved surface type part forming precision measuring device comprises a main body structure, a positioning structure and a measuring structure. The main body structure comprises a platform, a supporting disc, a support, a cantilever beam and a rotating shaft. The rotating shaft is fixed to the center of the cantilever beam and is coaxial with the supporting disc. The positioning structure comprises a guide rail, a stand column, a fixing plate, a rotating handle and a pressing block, and the pressing block is used for pressing and fixing the curved surface part on the stand column; the measuring structure comprises 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 used for collecting surface contour data of the curved surface part. According to the device and the method for measuring the forming precision of the rotating curved surface type parts, through fine structural design, the forming precision of different rotating curved surface type parts can be rapidly, accurately and quantitatively measured, the measurement precision is remarkably improved, the measurement efficiency is greatly improved, and the detection period is shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of part forming accuracy measurement, and in particular to a device and method for measuring the forming accuracy of rotating curved surface parts. Background Art

[0002] Rotational curved surface parts are formed by rotating a straight or curved generatrix around a rotation axis on the plane where it is located. Such parts are generally formed by rolling, stamping, spinning and other process methods. After forming, in order to ensure that the parts meet the design and use accuracy requirements, internal or external test samples are generally used to compare and measure their forming accuracy. This traditional method has the characteristics of simple structure and easy operation, so it has been widely used in the field of part forming accuracy measurement.

[0003] However, for parts with rotating curved surfaces, the inspection template can only roughly measure the forming contour accuracy of the parts due to the limitations of its structure. This leads to two problems: first, it is impossible to provide accurate calibration position and calibration amount for subsequent manual calibration of parts; second, due to the unclear calibration position and calibration amount, the calibration cycle of parts is long and the calibration marks on the surface are heavy. These problems seriously affect the production efficiency and surface quality of parts.

[0004] Therefore, it is necessary to propose a new technical solution to improve the above technical problems. Summary of the invention

[0005] In view of the defects in the prior art, the object of the present invention is to provide a device and method for measuring the forming accuracy of rotating curved surface parts.

[0006] A forming accuracy measuring device for rotating curved surface parts provided by the present invention comprises a main structure, a positioning structure and a measuring structure; The main structure includes a platform, a support plate, a support, a cantilever beam and a rotating shaft. The support and the support plate are positioned and installed on the platform by bolts and positioning pins. The support plate is installed at the center of the device to support the curved surface parts. The cantilever beam is installed on the platform through the support. The rotating shaft is fixed at the center of the cantilever beam and is coaxial with the support plate. 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 by 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 comprises a contour plate and a plurality of measuring blocks. The contour plate is fixed on the rotating shaft by means of positioning pins and bolts, and the plurality of measuring blocks are fixed on the contour plate for collecting surface contour data of curved parts.

[0007] Preferably, the platform is a planar structure, providing a supporting connection plane, and two supports are provided on the platform. The two supports are provided with positioning pin holes at different heights for positioning the installation height of the cantilever beam.

[0008] Preferably, the measuring block comprises a dial indicator and a dial indicator fixing plate, and the dial indicator in the measuring block comprises a high-precision digital dial indicator or a displacement sensor.

[0009] Preferably, the number of the columns is six, and the six columns are all moved along the guide rail to a predetermined scale position and fixed by a fixing plate, so as to determine the radial position of the curved surface part.

[0010] Preferably, the main structure also includes an upper fixed block and a lower fixed block of the rotating shaft. The rotating shaft is rotatably arranged at the center position of the cantilever beam through the upper fixed block and the lower fixed block of the rotating shaft. The contour plate rotates around the rotating shaft with the measuring block and is coaxial with the support plate in size.

[0011] The present invention also provides a method for measuring the forming accuracy of a rotating curved surface part. The method uses the forming accuracy measuring device for rotating curved surface parts described above. The method comprises the following steps: Step S1: Place the part on the support plate, adjust the position and height of the six posts on the guide rail according to the scale lines on the guide rail and the post, and fix the part on the post by a clamping block until the center of the part is concentric with the support plate; Step S2: Mount the measuring block on a contour plate adapted to the forming surface of the part, and fix it together with the rotating shaft on the cantilever beam; Step S3: After adjusting the positioning pin on the support and installing the cantilever beam at a preset height, fine-tune the height of the column until the measuring block contacts the forming surface of the part; Step S4: Rotate the contour plate to observe the change of the percentage value on the measuring block, record the out-of-tolerance value and mark the out-of-tolerance position.

[0012] Preferably, in step S1, when adjusting the position and height of the column, precise adjustment is performed through scale lines on the column and the guide rail.

[0013] Preferably, in step S1, when fixing the part on the column, a pressing block is used to press the flange of the part against the end face of the column.

[0014] Preferably, in step S4, when the contour plate is rotated to observe the change of the percentage indication number on the measuring block, the dial gauge includes a high-precision digital dial gauge or a displacement sensor.

[0015] Preferably, in step S4, after recording the out-of-tolerance value and marking the out-of-tolerance position, shape correction is performed.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The device and method for measuring the forming accuracy of rotating curved surface parts provided by the present invention realizes the rapid, accurate and quantitative measurement of the forming accuracy of different rotating curved surface parts through fine structural design, such as adjustable columns, guide rails, contour plates and high-precision measuring blocks and other components, significantly improves the measurement accuracy, greatly improves the measurement efficiency and shortens the detection cycle; 2. The present invention can accurately measure the contour data of the part surface and provide accurate calibration position and calibration amount information according to the measurement results, which greatly facilitates the subsequent manual calibration work, reduces the blindness and uncertainty in the calibration process, reduces the calibration difficulty, and improves the calibration accuracy and efficiency; 3. The present invention ensures that the forming accuracy of parts meets the design requirements. Due to the accuracy and pertinence of the shaping process, the shaping marks are reduced, the surface quality of the parts is improved, and the quality and performance of the final product are more stable and reliable.

[0017] 4. The device of the present invention can realize the precision measurement of different rotating curved surface parts by simple operations such as adjusting the position and height of the column and replacing the contour plate. It has strong adaptability and flexibility, meets the diverse measurement needs, reduces the measurement cost, and improves the utilization rate and economic benefits of the measurement equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings: Figure 1 It is a top view of the structure of the precision measuring device for rotating curved surface parts; Figure 2 This is a front view of the structure of the precision measuring device for rotating curved surface parts; Figure 3 It is the left view of the structure of the precision measuring device for rotating curved surface parts; Figure 4 This is a schematic diagram of the measuring block of the rotating curved surface parts precision measuring device; Figure 5 This is a schematic diagram of a rotating surface part precision measuring device measuring a part; Figure 6 This is the flow chart for measuring the forming accuracy of rotating surface parts.

[0019] Among them: platform 1; support 2; cantilever beam 3; guide rail 4; support plate 5; rotating shaft 6; upper fixing block 7 of rotating shaft; lower fixing block 8 of rotating shaft; fixing plate 9; column 10; rotating handle 11; clamping block 12; contour plate 13; measuring block 14; dial indicator fixing plate 15; dial indicator 16; curved surface part 17. DETAILED DESCRIPTION

[0020] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0021] Embodiment 1: Reference Figure 1-Figure 3 According to the present invention, a forming accuracy measuring device for rotating curved surface parts is provided, comprising a main structure, a positioning structure and a measuring structure; the main structure comprises a platform, a supporting plate, a support, a cantilever beam and a rotating shaft, the support and the supporting plate are positioned and installed on the platform by bolts and positioning pins, the supporting plate is installed at the center of the device for supporting the curved surface parts, the cantilever beam is installed on the platform by the support, and the rotating shaft is fixed at the center position of the cantilever beam and is coaxial with the supporting plate; the positioning structure comprises a guide rail, a column, a fixing plate, a rotating handle and a clamping block, the column moves along the guide rail and is fixed by the fixing plate, so as to determine the radial position of the curved surface parts, the rotating handle is used to adjust the height of the column, and the clamping block is used to clamp and fix the curved surface parts on the column; the measuring structure comprises a contour plate and a plurality of measuring blocks, the contour plate is fixed on the rotating shaft by positioning pins and bolts, and the plurality of measuring blocks are fixed on the contour plate, so as to collect the surface contour data of the curved surface parts.

[0022] The platform is a planar structure, providing a supporting connection plane. Two supports are arranged on the platform, and positioning pin holes with different heights are arranged on the two supports for locating the installation height of the cantilever beam.

[0023] Reference Figure 4 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 dial indicator or a displacement sensor.

[0024] There are six columns, and all of the six columns are moved to predetermined scale positions along the guide rails and fixed by fixed plates to determine the radial positions of the curved surface parts.

[0025] The main structure also includes an upper fixed block and a lower fixed block of the rotating shaft. The rotating shaft is rotatably arranged at the center position of the cantilever beam through the upper fixed block and the lower fixed block of the rotating shaft. The contour plate rotates around the rotating shaft with the measuring block and is coaxial with the supporting plate in size.

[0026] Reference Figure 5 and Figure 6 The present invention also provides a method for measuring the forming accuracy of rotating curved surface parts. The method uses the above-mentioned forming accuracy measuring device for rotating curved surface parts. The method comprises the following steps: Step S1: Place the part on the support plate, adjust the position and height of the six posts on the guide rail according to the scale lines on the guide rail and the post, and fix the part on the post through the clamping block until the center of the part is concentric with the support plate; when adjusting the position and height of the post, make precise adjustments through the scale lines on the post and the guide rail. When fixing the part on the post, use the clamping block to press the flange of the part against the end face of the post.

[0027] Step S2: Mount the measuring block on a contour plate adapted to the forming surface of the part, and fix it together with the rotating shaft on the cantilever beam; Step S3: After adjusting the positioning pin on the support and installing the cantilever beam at a preset height, fine-tune the height of the column until the measuring block contacts the forming surface of the part; Step S4: Rotate the contour plate to observe the change of the percentage 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 percentage indicator on the measuring block, the dial gauge includes a high-precision digital display dial gauge or a displacement sensor. After recording the out-of-tolerance value and marking the out-of-tolerance position, perform shape correction.

[0028] Compared with traditional sample measurement, the measurement accuracy of rotating surface parts can be improved by more than 100 times and the calibration cycle can be shortened by more than 50%.

[0029] Embodiment 2: The purpose of this patent is to provide a device and method for measuring the forming accuracy of rotating curved surface parts. By adjusting the position and height of the column and replacing the contour plate, the forming accuracy of different rotating curved surface parts can be measured quickly, accurately and quantitatively, thereby providing the correction position and correction amount information for subsequent manual correction.

[0030] The device and method of the present invention can solve the problem that the forming accuracy of rotating curved surface parts cannot be quantitatively measured when using traditional inspection templates, and the problem that the correction position is fuzzy and the correction amount of the correction part is uncertain during manual correction. That is, on the one hand, it can obtain the high-precision forming contour of the part to ensure that the forming accuracy meets the design requirements; on the other hand, it can greatly shorten the correction cycle, reduce correction marks, improve the forming efficiency of the part while ensuring the surface quality. In addition, the device can meet the accuracy measurement requirements of different rotating curved surface parts after adjustment, while ensuring high-precision measurement capabilities and reducing costs.

[0031] The forming accuracy measuring device for rotating curved surface parts mainly consists of three parts: the main structure, the positioning structure and the measuring structure.

[0032] The main structure is composed of a platform 1, a support plate 5, a support 2, a cantilever beam 3, a rotating shaft 6, a fixing block 7 on the rotating shaft, and a fixing block 8 under the rotating shaft. The platform 1 is a planar structure that provides a support connection plane for the device. The support 2 and the support plate 5 are positioned and installed on the platform 1 by bolts and positioning pins. Positioning pin holes of different heights are provided on the two supports 2 for positioning the installation height of the cantilever beam 3. The support plate 5 is installed at the center of the device to provide support for the curved surface part 17 at the bottom, and to assist the column 10 in locating the center of the curved surface part 17. The rotating shaft 6 is fixed at the center of the cantilever beam 3 by the fixing block 7 on the rotating shaft and the fixing block 8 under the rotating shaft, and is coaxial with the support plate 5 in size.

[0033] The positioning structure is composed of guide rail 4, column 10, fixing plate 9, rotating handle 11, pressing block 12 and other parts. The guide rail 4 is fixed on the platform 1 by positioning pins and bolts. When in use, first move the six columns 10 to the corresponding predetermined scale positions of the guide rail 4 and fix them on the guide rail 4 by fixing plate 9, so as 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 height of the six columns 10 is consistent 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 curved surface part 17 on the end face of the column 10.

[0034] The measuring structure is composed of a contour plate 13 and multiple groups of measuring blocks 14. The contour plate 13 is fixed on the rotating shaft 6 by positioning pins and bolts. The measuring block 14 is a combination of a dial indicator 16 fixed on the contour plate 13 by two dial indicator fixing plates 15 in front and behind the contour plate 13 (for different measurement requirements, the dial indicator 16 in the measuring block 14 can be replaced by a high-precision digital display dial indicator or other high-precision measurement products such as a displacement sensor, so that the measuring block 14 can collect the surface contour data of the curved surface part). The curve formed by the ends of the multiple groups of measuring blocks 14 is the rotation generatrix of the curved surface part 17. When in use, the contour plate 13 rotates around the rotating shaft 6 with the measuring block 14, and the end of the measuring block 14 contacts the surface of the curved surface part 17. The contour 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 by bolts, and the fixing plate 9 and the column 10 are pressed on the guide rail 4 by tightening the bolts to achieve fixation; the pressing block 12 is fixed to the column 10 by countersunk bolts.

[0035] Method for measuring forming accuracy of rotating surface parts: First, place the part on the support plate, adjust the position and height of the six columns on the guide rails according to the scale lines on the guide rails and the columns, and fix the part on the column through the clamping block to ensure that the center of the part is concentric with the support plate. Then install the measuring block on the contour plate that matches the forming surface of the part, and fix it on the cantilever beam together with the rotating shaft, the fixing block on the rotating shaft, and the fixing block under the rotating shaft. After that, adjust the locating pin on the support to install the cantilever beam at the appropriate height and fine-tune the height of the column to ensure that the measuring block contacts the forming surface of the part. There are height adjustment scale lines on each column. When the handwheel is used to fine-tune the height of one of the columns, the remaining columns can move upward freely, but cannot move downward freely. In the end, it is only necessary to ensure that the final fine-tuning height scale lines of the six columns are consistent. Finally, turn the contour plate to observe the changes in the readings of the dial indicator (or other high-precision digital dial indicator, displacement sensor) on the measuring block, record the out-of-tolerance values ​​and mark the out-of-tolerance positions for manual correction. The forming accuracy measurement process of rotating surface parts is as follows: Figure 6 shown.

[0036] Those skilled in the art may understand this embodiment as a more specific description of Embodiment 1.

[0037] Those skilled in the art know that, in addition to realizing the system and its various devices, modules, and units provided by the present invention in a purely computer-readable program code, it is entirely possible to realize the same functions in the form of logic gates, switches, application-specific integrated circuits, programmable logic controllers, and embedded microcontrollers by logically programming the method steps. Therefore, the system and its various devices, modules, and units provided by the present invention can be considered as a hardware component, and the devices, modules, and units included therein for realizing various functions can also be regarded as structures within the hardware component; the devices, modules, and units for realizing various functions can also be regarded as both software modules for realizing the method and structures within the hardware component.

[0038] The above describes the specific embodiments of the present invention. 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. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A device for measuring the forming accuracy of rotating curved surface parts, characterized in that: Including main structure, positioning structure and measurement structure; The main structure includes a platform, a support plate, a support, a cantilever beam and a rotating shaft. The support and the support plate are positioned and installed on the platform by bolts and positioning pins. The support plate is installed at the center of the device to support the curved surface parts. The cantilever beam is installed on the platform through the support. The rotating shaft is fixed at the center of the cantilever beam and is coaxial with the support plate. 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 by 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 comprises a contour plate and a plurality of measuring blocks. The contour plate is fixed on the rotating shaft by means of positioning pins and bolts, and the plurality of measuring blocks are fixed on the contour plate for collecting surface contour data of curved parts.

2. The forming accuracy measuring device for rotating curved surface parts according to claim 1 is characterized in that: The platform is a planar structure, providing a supporting connection plane. Two supports are arranged on the platform, and positioning pin holes with different heights are arranged on the two supports for positioning the installation height of the cantilever beam.

3. The forming accuracy measuring device for rotating curved surface parts according to claim 1 is characterized in that: The measuring block comprises a dial gauge and a dial gauge fixing plate, and the dial gauge in the measuring block comprises a high-precision digital display dial gauge or a displacement sensor.

4. The forming accuracy measuring device for rotating curved surface parts according to claim 1 is characterized in that: There are six columns, and all of the six columns are moved along the guide rail to a predetermined scale position and fixed by a fixing plate, so as to determine the radial position of the curved surface part.

5. The forming accuracy measuring device for rotating curved surface parts according to claim 1 is characterized in that: The main structure also includes an upper fixed block and a lower fixed block of the rotating shaft. The rotating shaft is rotatably arranged at the center position of the cantilever beam through the upper fixed block and the lower fixed block of the rotating shaft. The contour plate rotates around the rotating shaft with the measuring block and is coaxial with the supporting plate in size.

6. A measuring method for a rotating curved surface part forming accuracy measuring device, characterized in that: The method uses the forming accuracy measuring device for rotating curved surface parts according to any one of claims 1 to 5, and the method comprises the following steps: Step S1: Place the part on the support plate, adjust the position and height of the six posts on the guide rail according to the scale lines on the guide rail and the post, and fix the part on the post by a clamping block until the center of the part is concentric with the support plate; Step S2: Mount the measuring block on a contour plate adapted to the forming surface of the part, and fix it together with the rotating shaft on the cantilever beam; Step S3: After adjusting the positioning pin on the support and installing the cantilever beam at a preset height, fine-tune the height of the column until the measuring block contacts the forming surface of the part; Step S4: Rotate the contour plate to observe the change of the percentage value on the measuring block, record the out-of-tolerance value and mark the out-of-tolerance position.

7. The measuring method of the forming accuracy measuring device for rotating curved surface parts according to claim 6 is characterized in that: In step S1, when adjusting the position and height of the column, precise adjustment is performed through the scale lines on the column and the guide rail.

8. The measuring method of the forming accuracy measuring device for rotating curved surface parts according to claim 6 is characterized in that: In the step S1, when fixing the part on the column, a pressing block is used to press the flange of the part against the end surface of the column.

9. The measuring method of the forming accuracy measuring device for rotating curved surface parts according to claim 6 is characterized in that: In the step S4, when the contour plate is rotated to observe the change of the percentage indication number on the measuring block, the dial gauge includes a high-precision digital display dial gauge or a displacement sensor.

10. The measuring method of the forming accuracy measuring device for rotating curved surface parts according to claim 6, characterized in that: In the step S4, after recording the out-of-tolerance value and marking the out-of-tolerance position, the shape is corrected.

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