A shaft part multifunctional measuring device and a shaft part measuring method

Abstract

The application discloses a kind of shaft parts multifunctional measuring device and shaft parts measuring method, belong to part detection technical field, it includes clamping mechanism, clamping mechanism includes first limit piece, second limit piece and first drive assembly, the distance between first limit piece and second limit piece is adjustable, first limit piece and second limit piece are used to the axial both ends of the part to be measured are clamped, first drive assembly is used to be connected with the part to be measured and drives the part to be measured to rotate along circumference;Connecting rod mechanism, connecting rod mechanism includes second drive assembly and connecting rod assembly, second drive assembly is connected with clamping mechanism by connecting rod assembly, second drive assembly is used to drive connecting rod assembly swing, in turn, through connecting rod assembly drive clamping mechanism reciprocating movement;Mounting bracket assembly and measuring instrument, mounting bracket assembly is set to clamping mechanism top, measuring instrument is installed on mounting bracket assembly, measuring instrument is used to abut the part to be measured and measured position is measured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of part detection, in particular, to a multifunctional measuring device for shaft parts. In addition, the present application also relates to a shaft part measuring method using the multifunctional measuring device for shaft parts. BACKGROUND

[0002] The information provided in this section is for the purpose of generally presenting the context of the present application. The work of the presently named inventors, to the extent the descriptions are concerned with, neither explicitly nor implicitly, are considered prior art with respect to the present application.

[0003] In the field of aero-engine technology, shaft parts are a common type of parts. In the assembly process of a certain turbo-shaft engine, the radial runout and the radial total runout of the inner ring after the installation of the output shaft bearing need to be checked to ensure that the parts are installed correctly during the assembly process and to ensure the stable operation of the engine. The total runout refers to the runout of the rotating surface of a part around the reference axis. That is, the actual element being measured is continuously rotated around the reference axis, and the maximum runout allowed when the measuring instrument and the workpiece move axially and radially at the same time.

[0004] The previous total runout detection method for shaft parts is only completed on a three-coordinate measuring instrument, which approximately measures the actual measurement value of the total runout, making it difficult to obtain an accurate measurement value. Currently, for the total runout and runout value of long shaft parts, only a handheld pressing method is used for rotation, which is not stable and continuous, and there is no relative movement, resulting in very inaccurate measurement values.

[0005] In the prior art, a special measuring device is used to measure the total runout of shaft parts. For example, a combined radial total runout measuring device for shaft parts disclosed in Chinese Patent No. CN214951095U can simultaneously detect three parts, improving the detection efficiency and being suitable for the detection of large quantities of shaft parts.

[0006] However, the detection device of the prior art can only achieve a single measurement item, cannot realize the reciprocating movement of the parts, and cannot conveniently clamp parts of different lengths. In addition, it is difficult to achieve secure connection for parts of different diameters, and there are problems such as insufficient adaptability and too complex device structure.

[0007] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0008] In view of at least one of the above technical problems, the present application provides a shaft part multifunctional measuring device and a shaft part measuring method, which can realize stable clamping of different lengths of measured parts through a clamping mechanism, and realize stable horizontal movement of the measured part through a connecting rod mechanism, and realize measurement of various items of shaft parts through cooperation of the clamping mechanism and the connecting rod mechanism.

[0009] According to an aspect of the present application, a shaft part multifunctional measuring device is provided for detecting multiple parameters of a measured part, and the shaft part multifunctional measuring device comprises:

[0010] A clamping mechanism, the clamping mechanism comprising a first limiting piece, a second limiting piece and a first driving assembly, the distance between the first limiting piece and the second limiting piece being adjustable, the first limiting piece and the second limiting piece being used for clamping the axial two ends of the measured part, and the first driving assembly being used for connecting with the measured part and driving the measured part to rotate in the circumferential direction;

[0011] A connecting rod mechanism, the connecting rod mechanism comprising a second driving assembly and a connecting rod assembly, the second driving assembly being connected with the clamping mechanism through the connecting rod assembly, and the connecting rod assembly being used for driving the clamping mechanism to move back and forth in the horizontal direction under the driving of the second driving mechanism;

[0012] A mounting rack assembly and a measuring instrument, the mounting rack assembly being arranged above the clamping mechanism, the measuring instrument being arranged on the mounting rack assembly, and the measuring instrument being used for abutting against the measured position of the measured part for measurement.

[0013] In some embodiments of the present application, a bearing is arranged on the first limiting piece, and the bearing is connected with the first end of the measured part; the first driving assembly is arranged on the second limiting piece, and the first driving assembly is connected with the second end of the measured part.

[0014] In some embodiments of the present application, the clamping mechanism further comprises a connecting piece and a rotating piece, the first end of the connecting piece is connected with the bearing, and the second end of the connecting piece is used for connecting with the first end of the measured part; the rotating piece is rotatably arranged on the second limiting piece, the first end of the rotating piece is connected with the first driving assembly, and the second end of the rotating piece is connected with the second end of the measured part.

[0015] In some embodiments of the present application, the second end of the connecting piece is annularly arranged with a plurality of connecting blocks, the radial distance between the plurality of connecting blocks relative to the connecting piece is adjustable, and then the inner annular surface of the first end of the measured part is supported and fixed through the outer surface of the plurality of connecting blocks; the second end of the rotating piece is annularly arranged with a plurality of clamping blocks, the distance between the plurality of clamping blocks and the axis of the rotating piece is adjustable, and then the inner annular surface of the second end of the measured part is supported and fixed through the outer surface of the plurality of clamping blocks.

[0016] In some embodiments of the present application, the end face of the second end of the connecting piece is provided with a first limiting hole, a plurality of connecting blocks are arranged in an annular array outside the first limiting hole, a first tension spring is arranged between each of the plurality of connecting blocks and the outer wall of the connecting piece, the first tension spring is used to provide a pulling force along the radial direction of the connecting piece towards the inside, a first tapered cylinder is arranged in the first limiting hole, the first tapered cylinder is used to be inserted into the first limiting hole and simultaneously push the plurality of connecting blocks radially outward during axial movement, thereby supporting and fixing the inner annular surface of the first end of the measured part through the outer surface of the connecting blocks; the end face of the second end of the rotating piece is provided with a second limiting hole, a plurality of clamping blocks are arranged in an annular array outside the second limiting hole, a second tension spring is arranged between each of the plurality of clamping blocks and the outer wall of the rotating piece, the second tension spring is used to provide a pulling force along the radial direction of the rotating piece towards the inside, a second tapered cylinder is arranged in the second limiting hole, the second tapered cylinder is used to be inserted into the second limiting hole and simultaneously push the plurality of clamping blocks away from the axis of the rotating piece, thereby supporting and fixing the inner annular surface of the second end of the measured part through the outer surface of the clamping blocks.

[0017] In some embodiments of the present application, the bottom of the first limiting piece and the second limiting piece is provided with a roller, a connecting assembly and a first locking piece are arranged between the first limiting piece and the second limiting piece, the length of the connecting assembly is adjustable, and the first locking piece is used to lock and fix the connecting assembly.

[0018] In some embodiments of the present application, the clamping mechanism is arranged on the workbench, the workbench is provided with a mounting groove, the connecting rod assembly includes a rotating rod, a rotating shaft, a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod, the rotating shaft is arranged on the inner wall of the mounting groove, the rotating shaft is connected with the second driving assembly, the first end of the rotating rod is connected with the rotating shaft, the second end of the rotating rod is hinged with the first end of the first connecting rod, the first end of the second connecting rod is hinged on the rotating shaft, the second end of the second connecting rod is hinged with the first end of the third connecting rod, the first end of the fourth connecting rod is hinged with the second end of the first connecting rod and the second end of the third connecting rod at the same time, and the second end of the fourth connecting rod is hinged with the clamping mechanism.

[0019] In some embodiments of the present application, the mounting rack assembly is arranged on the workbench, the mounting rack assembly includes a support cross bar, a connecting vertical bar and a second locking piece, one end of the support cross bar is connected to the workbench, the connecting vertical bar is slidingly arranged on the support cross bar, the measuring instrument is arranged on the connecting vertical bar, the connecting vertical bar is used to adjust the position of the measuring instrument, and the second locking piece is used to tightly connect the connecting vertical bar to the support cross bar.

[0020] In some embodiments of the present application, a sliding groove is formed on the support cross bar, a strip-shaped slot is formed on the connecting vertical bar, the second locking member is a screw rod or a bolt, and the second locking member is used to be connected with a nut after sequentially passing through the strip-shaped slot and the sliding groove, so as to lock and fix the support cross bar and the connecting vertical bar, and to adjust the angle between the connecting vertical bar and the support cross bar, thereby forming an acute angle between the probe of the measuring instrument and the surface to be measured of the part to be measured.

[0021] According to another aspect of the present application, a shaft part measuring method is also provided, which uses the shaft part multifunctional measuring device, and the shaft part measuring method comprises the following steps:

[0022] S100: adjusting the distance between the first limiting member and the second limiting member, and clamping the part to be measured between the first limiting member and the second limiting member;

[0023] S200: starting the second driving mechanism, and observing whether the horizontal displacement stroke of the part to be measured is within the measuring range of the measuring instrument; if yes, the next step is entered; if not, the position of the connecting rod assembly as a whole is adjusted or a connecting rod with different length is replaced, until the horizontal displacement stroke of the part to be measured is within the measuring range;

[0024] S300: adjusting the position of the measuring instrument, so that an acute angle is formed between the probe of the measuring instrument and the side surface of the part to be measured, and the measuring instrument can read the data to ensure the measurement is effective, and then the measuring instrument is adjusted to zero;

[0025] S400: when the runout is measured, only the first driving assembly is started to drive the part to be measured to rotate, and the runout value of the part to be measured is detected by the measuring instrument;

[0026] S500: when the end face runout is measured, the position of the measuring instrument is adjusted, so that the probe of the measuring instrument abuts against the axial end face of the part to be measured, only the first driving assembly is started to drive the part to be measured to rotate, and the end face runout value of the part to be measured is detected by the measuring instrument;

[0027] S600: when the total runout is measured, the second driving assembly is started to drive the part to be measured to move horizontally while rotating, and the total runout value of the part to be measured is detected by the measuring instrument;

[0028] S700: when the straightness is measured, the first driving assembly is closed, only the second driving assembly is used to drive the part to be measured to move horizontally, and the total runout value of the part to be measured is detected by the measuring instrument.

[0029] The present application has the following beneficial effects:

[0030] The multifunctional measuring device for shaft parts can realize stable clamping of shaft parts with different lengths through a clamping mechanism, and can drive the shaft parts to rotate through a first driving assembly after clamping is completed, wherein the distance between the first limiting piece and the second limiting piece of the clamping mechanism is adjustable, so as to adapt to the clamping and limiting of shaft parts with different lengths by adjusting the distance between the first limiting piece and the second limiting piece. Meanwhile, the clamping mechanism is connected with the connecting rod mechanism, so that the connecting rod mechanism drives the clamping mechanism and the shaft parts to move horizontally as a whole, so as to realize the multi-dimensional motion of the shaft parts rotating and moving horizontally, and finally realize the measurement of multiple function parameters through the measuring instrument.

[0031] The shaft part measuring method can realize the motion of the shaft parts in multiple ways through the cooperation of the first driving assembly and the second driving assembly, and then measure different parameters of the shaft parts through the measuring instrument. When measuring the runout, only the first driving assembly is started to drive the shaft parts to rotate; when measuring the end face runout, only the first driving assembly is started to drive the shaft parts to rotate; when measuring the total runout, the second driving assembly is additionally started to drive the shaft parts to move horizontally while rotating; when measuring the straightness, the first driving assembly is closed, and only the second driving assembly is used to drive the shaft parts to move horizontally. In this way, the measurement of multiple function parameters is efficiently performed in steps, the measurement efficiency is effectively improved, and the measurement accuracy is ensured.

[0032] Of course, it is not necessary to achieve all the advantages described above when implementing any product of the present application. In addition to the purposes, features and advantages described above, the present application has other purposes, features and advantages. The present application will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0033] The drawings constituting a part of the present application are used to provide further understanding of the present application, the schematic embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitation on the present application. In the drawings:

[0034] Figure 1 is a schematic diagram of the overall structure of the preferred embodiment of the present application;

[0035] Figure 2 is a schematic diagram of the clamped state of the shaft part to be measured in the preferred embodiment of the present application;

[0036] Figure 3 is a schematic diagram of the structure of the clamping mechanism in the preferred embodiment of the present application;

[0037] Figure 4 is a schematic diagram of the structure of the mounting bracket assembly in the preferred embodiment of the present application;

[0038] Figure 5is a structural schematic view of a connecting rod mechanism of a preferred embodiment of the present application;

[0039] Fig. 1 is a structural schematic view of a connecting rod mechanism of a preferred embodiment of the present application; Fig. 2 is a structural schematic view of a connecting rod mechanism of a preferred embodiment of the present application; Fig. 3 is a structural schematic view of a connecting rod mechanism of a preferred embodiment of the present application; Fig. 4 is a structural schematic view of a connecting rod mechanism of a preferred embodiment of the present application; Fig. 5 is a structural schematic view of a connecting rod mechanism of a preferred embodiment of the present application; Fig. 6 is a structural schematic view of a connecting rod mechanism of a preferred embodiment of the present application. DETAILED DESCRIPTION

[0040] The embodiments of the present application are described in detail below with reference to the accompanying drawings, but the present application can be implemented in various different ways as defined and covered by the following description.

[0041] A shaft part multifunctional measuring device is used for detecting multiple parameters of a part to be measured 100, and the shaft part multifunctional measuring device comprises:

[0042] A clamping mechanism 200, the clamping mechanism 200 comprises a first limiting piece 201, a second limiting piece 202 and a first driving assembly 205, the distance between the first limiting piece 201 and the second limiting piece 202 is adjustable, the first limiting piece 201 and the second limiting piece 202 are used for clamping the axial two ends of the part to be measured 100, and the first driving assembly 205 is used for connecting and driving the part to be measured 100 to rotate in the circumferential direction;

[0043] A connecting rod mechanism 300, the connecting rod mechanism 300 comprises a second driving assembly 301 and a connecting rod assembly, the second driving assembly 301 is connected with the clamping mechanism 200 through the connecting rod assembly, and the connecting rod assembly is used for driving the clamping mechanism 200 to move back and forth in the horizontal direction under the driving of the second driving mechanism 301;

[0044] A mounting rack assembly 400 and a measuring instrument 500, the mounting rack assembly 400 is arranged above the clamping mechanism 200, the measuring instrument 500 is arranged on the mounting rack assembly 400, and the measuring instrument 500 is used for abutting against the measured position of the part to be measured 100 to perform measurement.

[0045] Here, the first driving assembly 205 and the second driving assembly 301 are power sources, in some embodiments, the first driving assembly 205 and the second driving assembly 301 both adopt motors, and by adopting standard parts, the overall cost is reduced.

[0046] The shaft part multifunctional measuring device can realize stable clamping of the measured part 100 with different lengths through the clamping mechanism 200, and can drive the measured part 100 to rotate through the first driving assembly 205 after clamping is completed. The distance between the first limiting piece 201 and the second limiting piece 202 of the clamping mechanism 200 is adjustable, so as to adapt to the clamping and limiting of the measured part 100 with different lengths by adjusting the distance between the first limiting piece 201 and the second limiting piece 202. Meanwhile, the clamping mechanism 200 is connected with the connecting rod mechanism 300, so as to realize the horizontal movement of the clamping mechanism 200 and the measured part 100 as a whole driven by the connecting rod mechanism 300, so as to realize the multi-dimensional movement of the measured part 100 rotating and horizontally moving at the same time, and finally realize the measurement of multiple function parameters through the measuring instrument 500.

[0047] Preferably, as shown in Figure 1 and Figure 3 , the first limiting piece 201 is provided with a bearing 206, and the bearing 206 is connected with the first end of the measured part 100. The first driving assembly 205 is arranged on the second limiting piece 202, and the first driving assembly 205 is connected with the second end of the measured part 100.

[0048] It can be understood that the first end of the measured part 100 is connected with the bearing 206 on the first limiting piece 201, and the second end of the measured part 100 is connected with the first driving assembly 205 on the second limiting piece 202, that is, after the two ends of the measured part 100 are clamped, the measured part 100 can be driven to rotate through the first driving assembly 205, and then the measured part 100 is measured through the measuring instrument 500. Since the measuring instrument 500 is in a fixed state, the accuracy of the measuring instrument 500 can be ensured, and the measurement reference will not change due to the adjustment of the position of the measuring instrument 500 at all times, which will finally affect the accuracy of the measurement.

[0049] It should be noted that after the distance between the first limiting piece 201 and the second limiting piece 202 is adjusted, the locking and limiting of the first limiting piece 201 and the second limiting piece 202 can be realized through bolts or buckles.

[0050] In some embodiments, a limiting tension spring is arranged between the first limiting piece 201 and the second limiting piece 202, which is used to provide a pulling force for pulling the first limiting piece 201 and the second limiting piece 202 tightly, so that when the measured part 100 is clamped into the room between the first limiting piece 201 and the second limiting piece 202, the limiting tension spring can provide a pre-tightening force for locking the measured part 100, which is beneficial to improve the stability of the clamping of the measured part 100.

[0051] Preferably, as shown in Figure 1 , 2As shown in FIGS. 3, the clamping mechanism 200 further comprises a connecting piece 207 and a rotating piece 208. The first end of the connecting piece 207 is connected with the bearing 206, and the second end of the connecting piece 207 is used to be connected with the first end of the part to be measured 100. The rotating piece 208 is rotatably arranged on the second limiting piece 202. The first end of the rotating piece 208 is connected with the first driving assembly 205, and the second end of the rotating piece 208 is connected with the second end of the part to be measured 100.

[0052] It can be understood that the first end of the part to be measured 100 is connected with the bearing 206 through the connecting piece 207, and the second end of the part to be measured 100 is connected with the first driving assembly 205 through the rotating piece 208. The clamping of the part to be measured 100 with different sizes can be realized by replacing the connecting piece 207 and the rotating piece 208, which effectively improves the adaptability of the clamping mechanism 200.

[0053] Preferably, as shown in FIGS. 3, Figure 3 The second end of the connecting piece 207 is annularly arranged with a plurality of connecting blocks 2071. The radial distance of the plurality of connecting blocks 2071 relative to the connecting piece 207 is adjustable, and then the inner annular surface of the first end of the part to be measured 100 is supported and fixed through the outer surface of the plurality of connecting blocks 2071. The second end of the rotating piece 208 is annularly arranged with a plurality of clamping blocks 2081. The distance between the plurality of clamping blocks 2081 and the axis of the rotating piece 208 is adjustable, and then the inner annular surface of the second end of the part to be measured 100 is supported and fixed through the outer surface of the plurality of clamping blocks 2081.

[0054] It can be understood that by adjusting the positions of the plurality of connecting blocks 2071, the diameter of the outer surface of the connecting block 2071 as the supporting surface can be realized, and then the supporting and limiting requirements of the first end of the part to be measured 100 with different diameters can be adapted. Similarly, by adjusting the positions of the plurality of clamping blocks 2081, the supporting and limiting requirements of the second end of the part to be measured 100 with different diameters can also be adapted. Moreover, without making multiple sets of connecting pieces 207 and rotating pieces 208 with different specifications, and without frequently disassembling and replacing the connecting piece 207 or the rotating piece 208, it is not only conducive to reducing the overall manufacturing cost, but also can reduce the influence on the measurement efficiency caused by replacing the connecting piece 207 or the rotating piece 208.

[0055] Preferably, the end face of the second end of the connecting piece 207 is provided with a first limiting hole, a plurality of connecting blocks 2071 are arranged in an annular array outside the first limiting hole, a first tension spring is arranged between each of the plurality of connecting blocks 2071 and the outer wall of the connecting piece 207, the first tension spring is used to provide a pulling force along the radial direction of the connecting piece 207 towards the inside, a first tapered cylinder is arranged in the first limiting hole, the first tapered cylinder is used to be inserted into the first limiting hole and simultaneously push the plurality of connecting blocks 2071 away from the axis of the connecting piece 207 during the movement along the axial direction, and then the outer surface of the connecting block 2071 supports and fixes the inner annular surface of the first end of the measured part 100. The end face of the second end of the rotating piece 208 is provided with a second limiting hole, a plurality of clamping blocks 2081 are arranged in an annular array outside the second limiting hole, a second tension spring is arranged between each of the plurality of clamping blocks 2081 and the outer wall of the rotating piece 208, the second tension spring is used to provide a pulling force along the radial direction of the rotating piece 208 towards the inside, a second tapered cylinder is arranged in the second limiting hole, the second tapered cylinder is used to be inserted into the second limiting hole and simultaneously push the plurality of clamping blocks 2081 away from the axis of the rotating piece 208, and then the outer surface of the clamping block 2081 supports and fixes the inner annular surface of the second end of the measured part 100.

[0056] It can be understood that during the process of inserting the first tapered cylinder into the first limiting hole, the plurality of connecting blocks 2071 are constantly pushed away from the axis of the connecting piece 207 by the side wall of the first tapered cylinder, realizing the divergent expansion movement of the plurality of connecting blocks 2071 towards the outer periphery of the connecting piece 207, so as to adjust the outer surface of the plurality of connecting blocks 2071 to the appropriate position, facilitating the interference fit connection with the inner annular surface of the first end of the measured part 100. Similarly, by inserting the second tapered cylinder into the second limiting hole, the position of the clamping block 2081 can also be adjusted to better cooperate with the inner annular surface of the second end of the measured part 100.

[0057] Optionally, rubber pads are arranged on the outer surfaces of the connecting blocks 2071 and the clamping blocks 2081. The rubber pads can provide a buffering protection effect and also provide a rebounding force to enhance the connection stability of the interference fit position.

[0058] In other embodiments, the outer surface of the clamping block 2081 is a spline structure, which can realize the clamping fit with the inner annular surface of the second end of the measured part 100 and stably limit the diagonal direction, realizing the stable connection of the clamping position.

[0059] Preferably, please refer to Figure 2 The bottom of the first limiting piece 201 and the second limiting piece 202 is provided with a roller 209, a connecting assembly 203 and a first locking piece 204 are arranged between the first limiting piece 201 and the second limiting piece 202, the length of the connecting assembly 203 is adjustable, and the first locking piece 204 is used to lock and fix the connecting assembly 203.

[0060] It can be understood that the roller 209 can improve the convenience of the movement of the first limiting member 201 and the second limiting member 202, and facilitate the adjustment of the positions of the first limiting member 201 and the second limiting member 202. The connecting assembly 203 can limit the distance between the first limiting member 201 and the second limiting member 202, and after the connecting assembly 203 is locked by the first locking member 204, the distance between the first limiting member 201 and the second limiting member 202 can be fixed.

[0061] In some embodiments, the connecting assembly 203 includes a telescopic rod, the telescopic rod includes a telescopic outer cylinder and a telescopic inner rod, a locking screw hole is formed in the side wall of the telescopic outer cylinder, and the first locking member 204 is used to penetrate the locking through hole and abut against the side wall of the telescopic inner rod to lock the telescopic outer cylinder and the telescopic inner rod. The first locking member 204 is a bolt or a screw rod, and the telescopic rod can be directly locked by the first locking member 204, thereby limiting the distance between the first limiting member 201 and the second limiting member 202.

[0062] In other embodiments, the connecting assembly 203 includes a swing frame, the swing frame includes two connecting rods that are hingedly connected to each other, and the first locking member 204 is a bolt or a screw rod. The first locking member 204 is used to lock and fix the two connecting rods in cooperation with a nut. By locking and fixing the two connecting rods, the distance between the first limiting member 201 and the second limiting member 202 can be limited, and the structure is simple and the manufacturing cost is low.

[0063] Preferably, as shown in Figure 3 and Figure 5 , the clamping mechanism 200 is arranged on the workbench 600, the workbench 600 is provided with a mounting groove 601, the connecting rod assembly includes a rotating rod 302, a rotating shaft 303, a first connecting rod 304, a second connecting rod 305, a third connecting rod 306, and a fourth connecting rod 307, the rotating shaft 303 is arranged on the inner wall of the mounting groove 601, the rotating shaft 303 is connected with the second driving assembly 301, the first end of the rotating rod 302 is connected with the rotating shaft 303, the second end of the rotating rod 302 is hingedly connected with the first end of the first connecting rod 304, the first end of the second connecting rod 305 is hingedly connected with the rotating shaft 303, the second end of the second connecting rod 305 is hingedly connected with the first end of the third connecting rod 306, the first end of the fourth connecting rod 307 is hingedly connected with the second end of the first connecting rod 304 and the second end of the third connecting rod 306 at the same time, and the second end of the fourth connecting rod 307 is hingedly connected with the clamping mechanism 200.

[0064] It can be understood that the connecting rod assembly drives the plurality of connecting rods to reciprocate through the rotating rod 302, that is, the clamping mechanism 200 and the part to be measured 100 are driven to move horizontally reciprocally as a whole, and the second driving assembly 301 is used to drive the rotating rod 302 to rotate at a constant speed. The connecting rod assembly has the advantages of simple structure, strong maintainability, and free adjustment of the length of the connecting rod matched with different workpiece measurement stroke requirements; meanwhile, the first connecting rod 304, the second connecting rod 305, the third connecting rod 306, and the fourth connecting rod 307 have different lengths, have no dead point position, and have the characteristic of quick return, which is beneficial to ensure that the clamping mechanism 200 and the part to be measured 100 move horizontally at a constant speed, quickly and stably as a whole.

[0065] It should be noted that the position of the connecting rod assembly as a whole can be adjusted by adjusting the mounting position of the rotating shaft 303 in the mounting groove 601 to adapt to different working conditions.

[0066] Optionally, a guide rail is arranged on the workbench 600, and the guide rail is used to guide the rollers 209 of the first limiting piece 201 and the second limiting piece 202 to ensure that the clamping mechanism 200 and the part to be measured 100 move horizontally reciprocally as a whole.

[0067] Preferably, please refer to Figure 4 As shown in the figure, the mounting bracket assembly 400 is arranged on the workbench 600, and the mounting bracket assembly 400 comprises a support cross rod 401, a connecting vertical rod 404, and a second locking piece 403. One end of the support cross rod 401 is connected to the workbench 600, the connecting vertical rod 404 is slidingly arranged on the support cross rod 401, the measuring instrument 500 is arranged on the connecting vertical rod 404, the connecting vertical rod 404 is used to adjust the position of the measuring instrument 500, and the second locking piece 403 is used to connect and fasten the connecting vertical rod 404 to the support cross rod 401.

[0068] It can be understood that the measuring instrument 500 is installed on the connecting vertical rod 404, and the position of the measuring instrument 500 can be adjusted by adjusting the position of the connecting vertical rod 404, and the position of the connecting vertical rod 404 is locked and fixed by the second locking piece 403, so as to ensure the installation and fixation of the measuring instrument 500. Since the measuring instrument 500 is stably and fixedly installed, the front and rear reference error variation of the measuring instrument 500 after each zero adjustment is small, which is more conducive to improving the stability and precision of continuous measurement.

[0069] Preferably, please refer to Figure 4As shown, the support cross bar 401 is provided with a sliding groove 402, the connecting vertical bar 404 is provided with a strip-shaped groove, the second locking member 403 is a screw rod or a bolt, and the second locking member 403 is used to be connected with a nut after sequentially passing through the strip-shaped groove and the sliding groove 402, so as to lock and fix the support cross bar 401 and the connecting vertical bar 404, and the angle between the connecting vertical bar 404 and the support cross bar 401 is adjustable, and then the probe of the measuring instrument 500 and the surface to be measured of the part to be measured 100 form an acute angle.

[0070] It can be understood that, by adjusting the angle between the connecting vertical bar 404 and the support cross bar 401, the probe of the measuring instrument 500 and the surface to be measured of the part to be measured 100 form an acute angle, which can ensure that there is a certain angle between the pointer of the measuring instrument 500 and the surface to be measured of the part to be measured 100, and prevent the resistance from being too large during measurement.

[0071] Preferably, the angle between the connecting vertical bar 404 and the support cross bar 401 is 5°-25°, so that the pointer of the measuring instrument 500 and the surface to be measured of the part to be measured 100 also form an angle of 5°-25°, which can effectively reduce the resistance during measurement and is beneficial to improve the measurement accuracy.

[0072] According to another aspect of the present application, a shaft part measuring method is also provided, which adopts the shaft part multifunctional measuring device, and the shaft part measuring method comprises the following steps:

[0073] S100: adjusting the distance between the first limiting member 201 and the second limiting member 202, and clamping the part to be measured 100 between the first limiting member 201 and the second limiting member 202;

[0074] S200: starting the second driving mechanism 301, and observing whether the horizontal displacement stroke of the part to be measured 100 is within the measurement range of the measuring instrument 500; if yes, the next step is entered; if not, the position of the connecting rod assembly as a whole is adjusted or the connecting rod with different length is replaced, until the horizontal displacement stroke of the part to be measured 100 is within the measurement range;

[0075] S300: adjusting the position of the measuring instrument 500, so that the probe of the measuring instrument 500 and the side surface of the part to be measured 100 form an acute angle, and the measuring instrument 500 can read the number to ensure the measurement is effective, and then the measuring instrument 500 is zeroed;

[0076] S400: when the runout is measured, only the first driving assembly 205 is started to drive the part to be measured 100 to rotate, and the runout value of the part to be measured 100 is detected by the measuring instrument 500;

[0077] S500: When measuring the end face runout, the position of the measuring instrument 500 is adjusted so that the probe of the measuring instrument 500 abuts the axial end face of the measured part 100, only the first driving assembly 205 is started to drive the measured part 100 to rotate, and the end face runout value of the measured part 100 is detected by the measuring instrument 500;

[0078] S600: When measuring the total runout, the second driving assembly 301 is started to drive the measured part 100 to move horizontally while rotating, and the total runout value of the measured part 100 is detected by the measuring instrument 500;

[0079] S700: When measuring the straightness, the first driving assembly 205 is closed, only the second driving assembly 301 is used to drive the measured part 100 to move horizontally, and the total runout value of the measured part 100 is detected by the measuring instrument 500.

[0080] Preferably, the ratio of the angular velocity ω1 of the second driving assembly 301 to the angular velocity ω2 of the first driving assembly 205 is ω1: ω2 = 1:5. Such a design can realize that the measured part 100 can rotate 2 complete circles under the horizontal motion single stroke of the measured part 100, thereby ensuring that complete measurement is realized within the horizontal motion single stroke, and facilitating the reciprocating motion of the connecting rod mechanism 300 to drive the measured part 100 for rapid calibration measurement.

[0081] The shaft part measuring method can realize the movement of the measured part 100 in multiple modes through the cooperation of the first driving assembly 205 and the second driving assembly 301, and then measure different parameters of the measured part 100 by the measuring instrument 500. When measuring the runout, only the first driving assembly 205 is started to drive the measured part 100 to rotate; when measuring the end face runout, only the first driving assembly 205 is started to drive the measured part 100 to rotate; when measuring the total runout, the second driving assembly 301 is additionally started to drive the measured part 100 to move horizontally while rotating; and when measuring the straightness, the first driving assembly 205 is closed, and only the second driving assembly 301 is used to drive the measured part 100 to move horizontally. In this way, the measurement of multiple functional parameters is realized in steps and efficiently, the measurement efficiency is effectively improved, and the measurement accuracy is ensured.

[0082] In summary, the application designs a special measuring device, clamps various shaft parts with different lengths through the adjustable clamping mechanism 200, and realizes the rotation of the measured part 100 around the axis. The connecting rod mechanism 300 drives the swing frame to move horizontally back and forth. The measured part 100 rotates in the axial direction while moving back and forth in the axial direction, and the measuring instrument 500 can effectively measure the total runout value, avoiding errors or mistakes caused by approximate measurement. At the same time, through the cooperation of the first driving assembly 205 and the second driving assembly 301, the measurement of multiple parameters such as runout, total runout, straightness, etc. can be completed, greatly expanding the functionality and convenience of the measuring device.

[0083] It should be noted that in this paper, the term "includes", "contains" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or device.

[0084] The principles and implementation modes of the application are described in specific examples in this paper, and the above examples are only used to help understand the method and its core idea. The above description is only the preferred embodiment of the application. It should be pointed out that due to the limitation of language expression, there are infinite specific structures, and for ordinary technical personnel in this technical field, without departing from the principles of the application, some improvements, refinements or changes can be made, or the above technical features can be combined in an appropriate way; these improvements, refinements, changes or combinations, or the application of the concept and technical scheme of the application to other fields without improvement, should be regarded as the protection of the application.

Claims

1. A multifunctional measuring device for shaft parts, used for detecting multiple parameters of a part to be measured (100), characterized in that, The shaft part multifunctional measuring device comprises: A clamping mechanism (200) comprising a first limiting piece (201), a second limiting piece (202) and a first driving assembly (205), the distance between the first limiting piece (201) and the second limiting piece (202) is adjustable, the first limiting piece (201) and the second limiting piece (202) are used for clamping the axial two ends of the measured part (100), and the first driving assembly (205) is used for being connected with the measured part (100) and driving the measured part (100) to rotate in the circumferential direction; A connecting rod mechanism (300) comprising a second driving assembly (301) and a connecting rod assembly, the second driving assembly (301) is connected with the clamping mechanism (200) through the connecting rod assembly, and the connecting rod assembly is used for driving the clamping mechanism (200) to reciprocate in the horizontal direction under the driving of the second driving assembly (301). The mounting rack assembly (400) is arranged above the clamping mechanism (200), and the measuring instrument (500) is arranged on the mounting rack assembly (400) and used for abutting against a measured position of the measured part (100) to perform measurement; the bearing (206) is arranged on the first limiting piece (201), and the bearing (206) is connected with the first end of the measured part (100); the first driving assembly (205) is arranged on the second limiting piece (202), and the first driving assembly (205) is connected with the second end of the measured part (100); the clamping mechanism (200) further comprises the connecting piece (207) and the rotating piece (208), the first end of the connecting piece (207) is connected with the bearing (206), and the second end of the connecting piece (207) is used for being connected with the first end of the measured part (100); the rotating piece (208) is rotatably arranged on the second limiting piece (202), the first end of the rotating piece (208) is connected with the first driving assembly (205), and the second end of the rotating piece (208) is connected with the second end of the measured part (100); the second end of the connecting piece (207) is annularly arranged with a plurality of connecting blocks (2071), the radial distance of the plurality of connecting blocks (2071) relative to the connecting piece (207) is adjustable, and then the inner annular surface of the first end of the measured part (100) is supported and fixed through the outer surfaces of the plurality of connecting blocks (2071); the second end of the rotating piece (208) is annularly arranged with a plurality of clamping blocks (2081), the distance between the plurality of clamping blocks (2081) and the axis of the rotating piece (208) is adjustable, and then the inner annular surface of the second end of the measured part (100) is supported and fixed through the outer surfaces of the plurality of clamping blocks (2081); the clamping mechanism (200) is arranged on the workbench (600), the mounting recess (601) is arranged on the workbench (600), the connecting rod assembly comprises the rotating rod (302), the rotating shaft (303), the first connecting rod (304), the second connecting rod (305), the third connecting rod (306) and the fourth connecting rod (307), the rotating shaft (303) is arranged on the inner wall of the mounting recess (601), the rotating shaft (303) is connected with the second driving assembly (301), the first end of the rotating rod (302) is connected with the rotating shaft (303), the second end of the rotating rod (302) is hingedly connected with the first end of the first connecting rod (304), the first end of the second connecting rod (305) is hingedly connected with the rotating shaft (303), the second end of the second connecting rod (305) is hingedly connected with the first end of the third connecting rod (306), the first end of the fourth connecting rod (307) is hingedly connected with the second end of the first connecting rod (304) and the second end of the third connecting rod (306) at the same time, and the second end of the fourth connecting rod (307) is hingedly connected with the clamping mechanism (200).

2. The shaft part multifunctional measuring device according to claim 1, characterized in that, An end face of the second end of the connecting piece (207) is provided with a first limiting hole, a plurality of connecting blocks (2071) are arranged in an annular array outside the first limiting hole, a first tension spring is arranged between each of the connecting blocks (2071) and the outer wall of the connecting piece (207), the first tension spring is used to provide a pulling force along the radial direction of the connecting piece (207) towards the inside, a first tapered cylinder is arranged in the first limiting hole, the first tapered cylinder is used to be inserted into the first limiting hole and simultaneously push the plurality of connecting blocks (2071) radially outwards along the connecting piece (207) during axial movement, and then the outer surfaces of the connecting blocks (2071) support and fix the inner annular surface of the first end of the measured part (100); an end face of the second end of the rotating piece (208) is provided with a second limiting hole, a plurality of clamping blocks (2081) are arranged in an annular array outside the second limiting hole, a second tension spring is arranged between each of the clamping blocks (2081) and the outer wall of the rotating piece (208), the second tension spring is used to provide a pulling force along the radial direction of the rotating piece (208) towards the inside, a second tapered cylinder is arranged in the second limiting hole, the second tapered cylinder is used to be inserted into the second limiting hole and simultaneously push the plurality of clamping blocks (2081) away from the axis of the rotating piece (208), and then the outer surfaces of the clamping blocks (2081) support and fix the inner annular surface of the second end of the measured part (100).

3. The shaft part multifunctional measuring device according to claim 1, characterized in that, The bottom of the first limiting piece (201) and the second limiting piece (202) is provided with a roller (209), a connecting assembly (203) and a first locking piece (204) are arranged between the first limiting piece (201) and the second limiting piece (202), the length of the connecting assembly (203) is adjustable, and the first locking piece (204) is used to lock and fix the connecting assembly (203).

4. The shaft part multifunctional measuring device according to claim 1, characterized in that, The mounting rack assembly (400) is arranged on the workbench (600), the mounting rack assembly (400) comprises a supporting horizontal rod (401), a connecting vertical rod (404) and a second locking piece (403), one end of the supporting horizontal rod (401) is connected to the workbench (600), the connecting vertical rod (404) is slidingly arranged on the supporting horizontal rod (401), the measuring instrument (500) is arranged on the connecting vertical rod (404), the connecting vertical rod (404) is used to adjust the position of the measuring instrument (500), and the second locking piece (403) is used to tightly connect the connecting vertical rod (404) to the supporting horizontal rod (401).

5. The shaft part multifunctional measuring device according to claim 1, characterized in that, The supporting horizontal rod (401) is provided with a sliding groove (402), the connecting vertical rod (404) is provided with a strip-shaped groove, the second locking piece (403) is a screw rod or a bolt, the second locking piece (403) is used to pass through the strip-shaped groove and the sliding groove (402) in sequence and then be connected with a nut, so as to lock and fix the supporting horizontal rod (401) and the connecting vertical rod (404), and the angle between the connecting vertical rod (404) and the supporting horizontal rod (401) is adjustable, so that the probe of the measuring instrument (500) and the measured surface of the measured part (100) form an acute angle.

6. A shaft member measuring method characterized by comprising: The shaft part multifunctional measuring device and the shaft part measuring method have the following steps. S100: Adjust the distance between the first limiting member (201) and the second limiting member (202), and clamp the measured part (100) between the first limiting member (201) and the second limiting member (202); S200: Start the second driving assembly (301), and observe whether the horizontal displacement stroke of the measured part (100) is within the measurement range of the measuring instrument (500); if yes, the next step is performed; if not, the position of the connecting rod assembly as a whole is adjusted or a connecting rod with a different length is replaced until the horizontal displacement stroke of the measured part (100) is within the measurement range; S300: Adjust the position of the measuring instrument (500) so that an acute angle is formed between the probe of the measuring instrument (500) and the side surface of the measured part (100), and the measuring instrument (500) can read the number to ensure effective measurement, and then the measuring instrument (500) is adjusted to zero; S400: When the runout is measured, only the first driving assembly (205) is started to drive the measured part (100) to rotate, and the runout value of the measured part (100) is detected by the measuring instrument (500); S500: When the end face runout is measured, the position of the measuring instrument (500) is adjusted so that the probe of the measuring instrument (500) abuts against the axial end face of the measured part (100), only the first driving assembly (205) is started to drive the measured part (100) to rotate, and the end face runout value of the measured part (100) is detected by the measuring instrument (500); S600: When the total runout is measured, the second driving assembly (301) is started to drive the measured part (100) to move horizontally while rotating, and the total runout value of the measured part (100) is detected by the measuring instrument (500); S700: When the straightness is measured, the first driving assembly (205) is closed, only the second driving assembly (301) is used to drive the measured part (100) to move horizontally, and the total runout value of the measured part (100) is detected by the measuring instrument (500).

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