A detection device for measuring the bending amount of the gear division circle of a gear shaft

Abstract

The present application relates to gear shaft bending amount detection technical field, specifically to a kind of detection device for measuring gear shaft gear pitch circle bending amount, including workbench, workbench is equipped with the floating support block and fixed support block for carrying out horizontal support to gear shaft, also be equipped with driven center stock seat assembly and active center stock seat assembly for carrying out axial fixation and rotation drive to gear shaft, while also being equipped with laser sensor assembly and several displacement sensor assembly, displacement sensor assembly is located at the outside of optical axis of gear shaft and the circular end surface of both end needle head, laser sensor assembly is located at the outside of gear of gear shaft, for measuring the bending amount and bending angle of gear shaft.The present application can solve the problem that the internal point of gear on gear shaft is difficult to detect at present to reflect the bending amount of gear, compared with the previous detection shaft parts device, the present application has the characteristics of high detection precision, automatic detection, very fit the transportation rhythm of shaft parts production line, safe and reliable etc..

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gear shaft bending amount detection, and particularly relates to a detection device for measuring gear division circle bending amount of a gear shaft. BACKGROUND

[0002] In industrial production, shaft parts are important components, which have the functions and applications of transmitting motion and power, supporting rotating parts, bearing, etc. The bending deflection of shaft parts can seriously affect the assembly accuracy and working performance of machines, and even affect centrifugal vibration, working accuracy, reliability and working safety.

[0003] Therefore, the detection of the bending deflection amount of the shaft is particularly important. However, the current market detection of the bending amount of shaft parts is limited to regular bending deformation of shaft parts. However, for the gear shaft, the center of the gear changes greatly compared with the center line of the shaft, and the teeth of the gear are complex. The current detection method cannot accurately measure the bending amount and bending angle change.

[0004] The present application mainly aims at the detection design of the bending amount of the existing simple shaft, and aims to design a detection device for measuring the gear division circle bending amount of the complex gear shaft. SUMMARY

[0005] The present application aims to provide a detection device for measuring the gear division circle bending amount of a gear shaft, which greatly improves the detection accuracy of the bending amount of complex shaft parts.

[0006] To this end, the present application provides a detection device for measuring the gear division circle bending amount of a gear shaft, which comprises a workbench, wherein a floating support block and a fixed support block for horizontally supporting a gear shaft are installed on the workbench, a driven top center seat assembly and a driven top center seat assembly for axially fixing and rotating driving the gear shaft are also installed, and a laser sensor assembly and a plurality of displacement sensor assemblies are also installed, the displacement sensor assemblies are located at the outside of the optical axis of the gear shaft and the circular end face of the two top center heads, and the laser sensor assembly is located at the outside of the gear of the gear shaft, which is used to determine the reference axis and measure the bending amount and bending angle of the gear shaft.

[0007] As a preferred technical scheme of the present application, the driven tailstock seat assembly and the driven tailstock seat assembly have similar structures and are symmetrically distributed on the workbench, and both the driven tailstock seat assembly and the driven tailstock seat assembly comprise a needle head, a tailstock seat mounting upper body, a linear drive assembly and a tailstock seat mounting lower body; meanwhile, the driven tailstock seat assembly further comprises a rotary encoder, and the driven tailstock seat assembly further comprises a rotary drive assembly; the two linear drive assemblies drive the tailstock seat mounting lower body and the needle head to move horizontally and axially fix the gear shaft in sequence, the rotary drive assembly is fixedly installed on the tailstock seat mounting upper body and drives the needle head to rotate, and the rotary encoder is connected with the needle head in the driven tailstock seat assembly.

[0008] As a preferred technical scheme of the present application, the tailstock seat mounting upper body and the tailstock seat mounting lower body are rotationally connected through a hinge cover, a floating cylinder is arranged on the tailstock seat mounting lower body and the front end of the floating cylinder abuts against the tailstock seat mounting upper body, so that the tailstock seat mounting upper body rotates around the hinge center axis of the hinge cover to adjust the height of the needle head.

[0009] As a preferred technical scheme of the present application, the rotary drive assembly comprises a speed reducer, a driving motor and a synchronous belt transmission mechanism; the speed reducer and the driving motor are fixedly installed at the outer end of the tailstock seat mounting upper body, and the driving motor is in transmission connection with the needle head through the synchronous belt transmission mechanism; the linear drive assembly comprises a slide rail mounting plate, a slide rail, a sliding block, a cylinder one or a cylinder two; the tailstock seat mounting lower body is slidably installed on the slide rail mounting plate through the sliding block and the slide rail and is driven by the cylinder one or the cylinder two.

[0010] As a preferred technical scheme of the present application, the displacement sensor assembly comprises a displacement sensor, a lever, a contact rod and a main body support; the contact rod is fixedly installed at the front end of the lever, the lever is arranged on the main body support and rotationally connected through a pin shaft and a bearing, the displacement sensor is fixedly installed at the rear of the main body support, and the lever abuts against the probe of the displacement sensor through a tension spring.

[0011] As a preferred technical scheme of the present application, a cylinder three is installed at the rear side of the main body support, and the rear end of the lever abuts against the upper end of the cylinder three.

[0012] As a preferred technical scheme of the present application, the displacement sensor assembly further comprises a displacement sensor connecting base and a displacement sensor mounting base, the main body support is fixedly connected with the displacement sensor connecting base by bolts and a waist-shaped groove, so that the height of the contact rod can be conveniently adjusted; the displacement sensor connecting base is fixedly connected with the displacement sensor mounting base, and the displacement sensor mounting base is slidingly matched with the inverted T-shaped groove of the workbench.

[0013] As a preferred technical scheme of the present application, the floating support block comprises a support main body, and a support block head, a support block seat and a spring sleeve connected in sequence from top to bottom, a vertical blind hole is arranged on the support main body and slidingly matched with the spring sleeve, and a telescopic spring is installed in the spring sleeve, so that the support block head can float up and down relative to the support main body.

[0014] As a preferred technical scheme of the present application, a threaded hole is arranged on the side wall of the support main body, a locking bolt is installed on the threaded hole of the support main body, the spring sleeve is locked and fixed, and the purpose of sinking the support block head is achieved; a strip-shaped groove is arranged on the left and right side walls of the support main body respectively, a pair of spring sheets are correspondingly installed in the strip-shaped grooves, the spring sheets are fixedly connected with the support block mounting base through a connecting sheet, and the support block mounting base is slidingly matched with the inverted T-shaped groove on the workbench.

[0015] As a preferred technical scheme of the present application, the laser sensor assembly comprises a laser sensor, a laser sensor stand, a laser sensor fixing block and a laser sensor mounting base, the laser sensor is installed on the laser sensor stand, the laser sensor stand is movably connected with the laser sensor fixing block through bolts and a waist-shaped groove in the vertical direction, and the laser sensor mounting base is horizontally slidingly matched with the inverted T-shaped groove of the workbench.

[0016] Compared with the prior art, the detection device for measuring the bending amount of the gear division circle of the gear shaft has the following beneficial effects.

[0017] 1. The present application can solve the problem that the internal points of the gear on the gear shaft are difficult to detect to reflect the bending amount of the gear, and compared with the previous detection device for shaft parts, the present application has the characteristics of high detection precision, automatic detection, very suitable for the transportation rhythm of the shaft part production line, safety and reliability, etc.

[0018] 2, The present application is mainly used for straightening platform of shaft, the workpiece is clamped by the needle head driven by the cylinder at both ends, and then the rotation of the gear shaft is driven by the transmission mode of synchronous pulley through the control of the servo motor at one end, so that the correctness of the rotation angle of the workpiece during rotation can be ensured, and then the coordinate positions of multiple points of the gear division circle are measured by the laser sensor and the coordinate positions of multiple points of the optical axis are measured by the displacement sensor, and then the rotation angle collected by the rotary encoder is integrated, fitted into a circle, and compared with the reference axis, so that the bending amount and bending angle of the gear shaft can be obtained.

[0019] 3, The fixed shaft workpiece is pushed by the cylinders with different strokes on both sides, the short-stroke cylinder on one side first pushes the driven center seat assembly, so that the needle head first contacts the workpiece, thereby playing the role of a fixing surface, and the cylinder with long stroke at the other end pushes forward again, so that the gear shaft can be completely clamped by the needle heads at both ends, compared with the previous simultaneous feeding mode, this mode avoids the possibility that the gear shaft is tilted or deformed due to strong action force at both ends when the two cylinders feed at the same time.

[0020] 4, The center seat end of the device has floating property, the up and down floating of the needle head is controlled by the extension and contraction of the cylinder, so that the gear shaft can be located on the same horizontal reference surface during rotation measurement, avoiding the up and down deviation of the gear shaft during rotation, and improving the accuracy of the measurement process and the reliability of the measurement data.

[0021] 5, Compared with the previous iron felt supporting mode, because the iron felt has a single shape, it cannot adapt to different shafts during straightening to achieve the purpose of support, and it is difficult to accurately fix the position of the shaft, which will affect the detection accuracy when the shaft rotates. The two supporting bodies designed in the present application can be replaced according to the different diameters of the gear shaft, and have strong adaptability. The gear shaft is supported by floating support blocks on both sides, and the fixed support block in the middle is relatively low. The inside of the floating support block on both sides is provided with a spring sleeve, the inside of the spring sleeve is provided with a telescopic spring, and the side surface of the support body is provided with a hole, so that the telescopic length of the telescopic spring can be controlled by the locking bolt. When the gear shaft rotates, the spring is compressed, so that the support block head is lowered to prevent interference with the rotation of the workpiece; after measurement, the telescopic spring returns to the original length, and the floating support blocks at both ends play a supporting role. According to the measurement result, the position with the maximum bending amount is found, and the fixed support block is moved to this position. Since the shaft has rigidity, bending deformation will occur when it is pressed down, so the fixed support block can ensure that the gear shaft does not deform excessively, plays a supporting role, and makes the detection process more stable and complete.

[0022] 6、The detection part of the present application adopts three displacement sensors and a laser sensor. The contact rods of the two displacement sensor assemblies are located at the lower ends of the two side thimble heads, and are used to measure the runout of the round end face of the thimble head, so as to set a reference line, which sets a reference for subsequent measurement. The laser sensor is used to measure the gear part. This non-contact measurement does not generate pressure on the important gear part, thereby avoiding wear and affecting the fitting accuracy. Moreover, the laser sensor can detect the position coordinates of each tooth of the gear, and then according to the measured data, correct circle fitting data points are screened out. A 1mm belt area can be set, and 180 sample points similar to the addendum circle radius obtained by assuming selection and calculation are selected in the range. Then, the sample points are subtracted by the modulus x the addendum height coefficient, so that the approximate division circle points are obtained. By comparing the fitted circle with the set reference axis, the bending amount of the division circle can be obtained. This method can screen out points with large deviation and reduce the measurement error, so as to ensure the accuracy of the data. Moreover, the radius of the division circle can be directly indicated, which is intuitive and accurate. The other displacement sensor is used to measure the end face data of the optical axis of the gear shaft. In this way, each part of the gear shaft can be accurately measured and sampled, so as to ensure the accuracy of the detection.

[0023] 7、The device has a large workbench, and the workbench is provided with an inverted T-shaped groove. A square nut is arranged in the groove, and the nut can be moved by loosening and tightening the inner hexagonal bolt at both ends of the top seat. In this way, the installation, fixation and sliding of the top seat can be facilitated. The thimble head can be moved by driving the slider connected with the installation seat of the thimble head on the sliding rail by the cylinder. The sliding block sliding rail moving mode can greatly reduce the heat generated by friction, and has high moving precision. In the moving process, the gear shaft can be prevented from being deformed due to over-tightening, and the installation is also very convenient.

[0024] 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 below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0025] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the description of the present application, serve to explain the present application. The present application is shown by way of illustration in the drawings as follows:

[0026] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0027] Figure 2 It is a front view of the active top seat assembly;

[0028] Figure 3 It is a sectional view of the active top seat assembly;

[0029] Figure 4 Structure diagram of laser sensor assembly body;

[0030] Figure 5 Front view of displacement sensor assembly body;

[0031] Figure 6 Axonometric view of floating support block;

[0032] Figure 7 Sectional view of floating support block;

[0033] Marked: 1, rotary encoder; 2, cylinder two; 3, driven center seat assembly; 4, floating support block; 5, fixed support block; 6, gear shaft; 7, driving center seat assembly; 8, speed reducer; 9, driving motor; 10, cylinder one; 11, floating cylinder; 12, workbench; 13, displacement sensor assembly; 14, laser sensor assembly; 15, needle head; 16, hinge center shaft; 17, hinge cover; 18, center seat mounting upper body; 19, synchronous belt; 20, synchronous pulley; 21, slide rail; 22, U-shaped connecting plate; 23, slide rail mounting plate; 24, sliding block; 25, center seat mounting lower body; 26, laser sensor; 27, laser sensor column; 28, laser sensor fixing block; 29, laser sensor mounting base; 30, contact rod; 31, lever; 32, main body support; 33, tension spring; 34, cylinder three; 35, displacement sensor; 36, displacement sensor connecting base; 37, displacement sensor mounting base; 38, support block head; 39, support block seat; 40, spring sleeve; 41, extension spring; 42, support main body; 43, connecting sheet; 44, spring sheet; 45, support block mounting base. DETAILED DESCRIPTION

[0034] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0035] As shown in the drawings, Figures 1-7 The detection device for measuring the bending amount of the gear division circle of the gear shaft of the present application, comprising: a workbench 12, and a driven center seat assembly 3, a driving center seat assembly 7, a floating support block 4, a fixed support block 5, a plurality of displacement sensor assemblies 13, and a laser sensor assembly 14 mounted on the workbench 12; the gear shaft 6 is placed above the floating support block 4 and the fixed support block 5, the two ends of the gear shaft 6 are axially fixed and rotationally driven by the driven center seat assembly 3 and the driving center seat assembly 7, and the displacement sensor assembly 13 and the laser sensor assembly 14 measure the rotating gear shaft 6.

[0036] Specifically, as shown in the drawings, Figure 2 , Figure 3As shown, the active center seat assembly 7 includes floating cylinder 11, center pin head 15, hinge center shaft 16, hinge cover 17, center seat installation upper body 18, center seat installation lower body 25. Linear drive assembly includes slide rail 21 and slide block 24, U-shaped connecting plate 22, slide rail mounting plate 23 and cylinder 10; rotary drive assembly includes synchronous belt 19, synchronous belt pulley 20, speed reducer 8, drive motor 9.

[0037] The slide rail mounting plate 23 is fixedly installed on the workbench 12, and the center seat installation lower body 25 is slidably installed on the slide rail mounting plate 23 through the slide block 24 and the slide rail 21; at the same time, the right end of the center seat installation lower body 25 is connected with the cylinder 10 through the U-shaped connecting plate 22, and the cylinder 10 is fixedly connected with the slide rail mounting plate 23, so that the center seat installation lower body 25 is driven to slide left and right on the slide rail mounting plate 23 by the cylinder 10.

[0038] The center seat installation upper body 18 is rotatably connected with the center seat installation lower body 25 through the hinge cover 17, the outer end of the center seat installation upper body 18 is fixedly installed with the speed reducer 8 and the drive motor 9, the inside of the center seat installation upper body 18 is provided with the long center pin head 15, the other end of the center pin head 15 is provided with a synchronous belt transmission mechanism, the synchronous belt transmission mechanism includes a synchronous belt pulley 20 connected with the center pin head and a synchronous belt pulley 20 arranged on the output shaft of the speed reducer 8, and the two synchronous belt pulleys 20 are connected through the synchronous belt 19, so that the center pin head 15 can be driven to rotate by the drive motor 9, and then the gear shaft 6 is rotated.

[0039] In addition, the center seat installation lower body 25 is provided with the floating cylinder 11, the floating cylinder 11 is inclinedly arranged, and the front end of the floating cylinder 11 abuts against the center seat installation upper body 18 to drive the center seat installation upper body 18 to rotate around the hinge center shaft 16 of the hinge cover 17, thereby achieving the purpose of adjusting the height of the center pin head 15.

[0040] The driven center seat assembly 3 has similar structure with the active center seat assembly 7, and the two are symmetrically distributed on the workbench 12, the driven center seat assembly 3 has cylinder 2, floating cylinder 11, center pin head 15, hinge center shaft 16, hinge cover 17, center seat installation upper body 18, synchronous belt 19, synchronous belt pulley 20, slide rail 21, U-shaped connecting plate 22, slide rail mounting plate 23, slide block 24, center seat installation lower body 25; the cylinder 2 is opposite to the cylinder 10, the center pin head 15 is driven by the cylinder 2 to axially clamp the gear shaft 6, the center pin head 15 is driven to rotate by the drive motor 9, and then the gear shaft 6 is rotated; the floating cylinder 11 is extended to abut against the center seat installation upper body 18 to rotate around the hinge center shaft 16 of the hinge cover 17, thereby achieving the purpose of adjusting the height of the center pin head 15 to keep parallel with the workbench.

[0041] The rotary encoder 1 is arranged on the driven top center seat assembly 3, and the rotary encoder 1 is connected with the top pin head 15 in the top center seat mounting body 18 of the driven top center seat assembly 3 through a synchronous belt transmission mechanism, and the rotary encoder 1 can analyze the rotation angle of the gear shaft 6.

[0042] As shown in Figure 4 The laser sensor assembly 14 includes a laser sensor 26, a laser sensor column 27, a laser sensor fixing block 28 and a laser sensor mounting base 29. The laser sensor 26 is mounted on a vertical side of the laser sensor column 27, and the laser sensor column 27 is movably connected with the laser sensor fixing block 28 through bolts and a waist-shaped slot in the vertical direction, so as to adjust the height of the laser sensor 26. Meanwhile, the laser sensor fixing block 28 is fixedly mounted on the laser sensor mounting base 29, and the laser sensor mounting base 29 is slidably matched with the inverted T-shaped slot on the workbench 12, so as to adjust the horizontal position of the laser sensor 26.

[0043] The laser sensor assembly 14 is moved and fixed to the gear, and since the laser ranging is limited, the relative positions of the laser sensor column 27, the laser sensor fixing block 28 and the laser sensor mounting base 29 are adjusted through the elastic bolts, so that the height and the distance of the laser sensor 26 from the gear can be adjusted, and the laser sensor 26 can measure the data of each position of the gear.

[0044] As shown in Figure 5 The displacement sensor assembly 13 includes a displacement sensor 35, a tension spring 33, a lever 31, a contact rod 30, a main body support 32, a cylinder three 34, a displacement sensor connecting base 36 and a displacement sensor mounting base 37. The contact rod 30 is fixedly mounted on the front end of the lever 31, the lever 31 is arranged on the main body support 32 and is rotatably connected through a pin shaft and a bearing, the displacement sensor 35 is fixed at the rear of the main body support 32, and the probe of the displacement sensor 35 abuts against the rear end of the lever 31.

[0045] The lever 31 is inclined upward at the front end by the retraction force of the tension spring 33, so that the contact rod 30 thereof contacts the position of the end face of the optical shaft as much as possible. Meanwhile, the cylinder three 34 is arranged on the rear side of the main body support 32, and the rear end of the lever 31 is abutted against the upper end of the cylinder three 34 when there is no workpiece. The cylinder three 34 (model CJ2B10-15SZ) is controlled to be elongated to stretch the tension spring 33, so as to lift the lever 31 and make the contact rod 30 away from the workpiece, thereby preventing the displacement sensor 35 from being excessively pressed and damaged.

[0046] Furthermore, the main support 32 and the displacement sensor connecting base 36 are fixedly connected by bolts and a slotted groove, which facilitates the adjustment of the height of the contact rod 30. The displacement sensor connecting base 36 is fixedly connected to the displacement sensor mounting base 37, and the displacement sensor mounting base 37 slides with the inverted T-slot on the worktable 12 to adjust the horizontal position of the contact rod 30.

[0047] like Figure 6 , Figure 7 As shown, the floating support block 4 includes: a support block head 38, a support block seat 39, a spring sleeve 40, a telescopic spring 41, a support body 42, a connecting piece 43, a spring piece 44, and a support block mounting base 45.

[0048] A support block 38 is mounted on the upper end of a support block base 39, and a spring sleeve 40 is mounted on the lower end of the support block base 39. The spring sleeve 40 slides into a vertical blind hole on the upper end of the support body 42. A telescopic spring 41 is located inside the spring sleeve 40, allowing the support block 38 to float up and down relative to the support body 42. A threaded hole is provided on the rear side wall of the support body 42. By installing a locking bolt in the hole on the side of the support body 42, the spring sleeve 40 is locked in place, thus adjusting the height of the support block 38.

[0049] In addition, the left and right side walls of the support body 42 are respectively provided with strip-shaped grooves, and a pair of spring plates 44 are installed in the strip-shaped grooves. At the same time, the spring plates 44 are fixedly connected to the support block mounting base 45 through the connecting plate 43. The support block mounting base 45 slides with the inverted T-shaped groove on the worktable 12 to adjust the horizontal position of the support block head 38. By setting the spring plates 44 between the support body 42 and the support block mounting base 45, the downward pressure force can be distributed during the subsequent straightening process to prevent the support body 42 from shaking.

[0050] The detection process of the detection device for measuring the pitch circle bending of a gear shaft according to the present invention is briefly described below:

[0051] First, place the fixed support block 5 in the middle of the floating support blocks 4 on both sides. Then, move the floating support blocks 4 on both sides by loosening the hex bolts between the support block mounting base 45 and the worktable 12. Remove the locking bolts next to the support body 42 so that the telescopic spring 41 in the spring sleeve 40 returns to its original length, thereby adjusting the height of the support block head 38 to support both sides of the gear shaft 6. Then, tighten the bolts to fix the position of the floating support block 4.

[0052] The driven center bit seat assembly 3 is moved to the appropriate position by loosening the bolts between the sliding rail mounting plate 23 and the workbench 12. The piston rod of the cylinder 2 is connected to the center bit mounting lower body 25 through the U-shaped connecting plate 22, so that the sliding block 24 connected to the center bit mounting lower body 25 can move on the sliding rail 21 under the push of the cylinder 2 (model CDQ2B40-40DZ), and the center pin head 15 can be exactly inserted into the center hole of the gear shaft 6. Then the driven center bit seat assembly 7 is moved to the appropriate position, so that the center pin head 15 is pushed by the cylinder 1 (model CDQ2B40-75DZ) to tightly press the gear shaft 6.

[0053] Then a displacement sensor assembly 13 is moved to the optical axis of the gear shaft 6 by loosening the bolts between the displacement sensor mounting base 37 and the workbench 12. The height of the contact rod 30 is adjusted by loosening the bolts between the main body support 32 and the displacement sensor connecting base 36. Then the cylinder 3 34 (model CJ2B10-15SZ) on the displacement sensor assembly 13 is retracted, and the retracting force of the extension spring 33 can lift the lever 31, so that the contact rod 30 can contact the position of the optical axis circular end face as much as possible. At the same time, when there is no workpiece, the piston rod of the cylinder 3 34 is extended to lift the lever 31, so that the contact rod 30 is away from the workpiece, which can prevent excessive pressure on the displacement sensor 35 pressure head and damage the displacement sensor 35.

[0054] The laser sensor assembly 14 is moved and fixed to the gear, and since the laser ranging is limited, the relative positions of the laser sensor stand 27, the laser sensor fixing block 28 and the laser sensor mounting base 29 are adjusted by loosening the bolts, so that the height and distance of the laser sensor 26 from the gear can be adjusted, so that the data of each position of the gear can be measured.

[0055] Then the displacement sensor assembly 13 at both ends is moved and fixed, so that the contact rod 30 can contact the lower part of the circular end face of the center pin head 15 on both sides. Through the lever 31, the change amount of the optical axis radius of the gear shaft 6 during rotation is transmitted to the measuring head of the displacement sensor 35 through the contact rod 30 and the lever 31 according to the corresponding proportion, and then the change amount of the optical axis of the gear shaft 6 during rotation can be obtained, and the data is integrated as a reference line.

[0056] Then the driving motor 9 of the driven center bit seat assembly 7 rotates in the positive direction to drive the speed reducer 8 to rotate, and a corresponding speed reduction ratio is transmitted to the synchronous pulley 20, the synchronous pulley 20 rotates to transmit torque to another synchronous pulley 20, and the center pin head 15 connected to the synchronous pulley 20 rotates at the same speed. Due to the clamping force, the gear shaft 6 will rotate with the motor, thereby driving the center pin head 15 at the driven end of the center pin seat to rotate, and the angle of rotation is transmitted to the rotary encoder 1 through belt transmission.

[0057] After clamping the gear shaft 6, before driving the gear shaft 6 to rotate, a bolt can be put into a hole on one side of the floating support block 4, clamping the slot of the spring sleeve 40, so that the inside telescopic spring 41 is stretched, achieving the purpose of sinking the support block head 38 and the support block seat 39 of the two sides of the floating support block 4, without affecting the rotation of the gear shaft 6.

[0058] Before the gear shaft 6 starts to rotate, there is a hinge center shaft 16 between the hinge cover 17 and the top pin seat installation lower body 25, which penetrates the top pin seat installation upper body 18, so that it can rotate along the hinge center shaft 16, thereby driving the top pin head 15 to swing, which has floating property. Under the extension and contraction of the side floating cylinder 11, it can ensure that the upper end surface of the top pin seat installation upper body 18 is always parallel to the workbench 12, so that the height of the reference line connected by the simulated centers of the circular end surfaces of the two end top pin heads 15 remains unchanged, making the data during measurement more accurate.

[0059] The positions of various points during the rotation of the gear shaft 6 are measured by the laser sensor 26 and the displacement sensor 35, and then combined with the rotation angle collected by the rotary encoder 1. Finally, the measured data is transmitted back to the upper computer, and the data is integrated and fitted into a circle. Finally, the maximum bending amount of the gear division circle and the optical axis and the corresponding bending angle are obtained, which lays the foundation for subsequent straightening.

[0060] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An inspection device for measuring the bending amount of a gear pitch circle of a gear shaft, characterized by, It comprises a workbench (12) on which a floating support block (4) and a fixed support block (5) for horizontally supporting a gear shaft (6) are installed, a driven top pin seat assembly (3) and a driving top pin seat assembly (7) for axially fixing and rotatingly driving the gear shaft (6) are installed, and a laser sensor assembly (14) and a plurality of displacement sensor assemblies (13) are installed, The displacement sensor assembly (13) is located outside the optical axis of the gear shaft (6), and the laser sensor assembly (14) is located outside the gear of the gear shaft (6) for measuring the bending amount and angle of the gear shaft (6), and the displacement sensor assembly (13) is also located at the circular end face of the two side top pin heads (15) for determining the reference axis.

2. The detection device for measuring the bending amount of the gear division circle of a gear shaft according to claim 1, characterized by, The driven top pin seat assembly (3) and the driving top pin seat assembly (7) have similar structures and are symmetrically distributed on the workbench (12), The driven top pin seat assembly (3) and the driving top pin seat assembly (7) each comprise a top pin head (15), a top pin seat installation upper body (18), a linear driving assembly and a top pin seat installation lower body (25); meanwhile, the driving top pin seat assembly (7) further comprises a rotary driving assembly, and the driven top pin seat assembly (3) further has a rotary encoder (1). The two linear driving assemblies drive the top pin seat installation lower body (25) and the top pin head (15) to move horizontally and axially fix the gear shaft (6) in sequence, the rotary driving assembly is fixedly installed on the top pin seat installation upper body (18) and drives the top pin head (15) to rotate, and the rotary encoder (1) is connected with the top pin head (15) in the driven top pin seat assembly (3).

3. The detection device for measuring the bending amount of the gear division circle of a gear shaft according to claim 2, characterized by The top pin seat installation upper body (18) and the top pin seat installation lower body (25) are rotationally connected through a hinge cover (17), the top pin seat installation lower body (25) is provided with a floating cylinder (11) arranged obliquely, and the front end of the floating cylinder (11) abuts against the top pin seat installation upper body (18), so that the top pin seat installation upper body (18) rotates around the hinge center axis (16) of the hinge cover (17) to adjust the height of the top pin head (15).

4. The detection device for measuring the bending amount of the gear division circle of a gear shaft according to claim 2, characterized by The rotary driving assembly comprises a speed reducer (8), a driving motor (9) and a synchronous belt transmission mechanism; the speed reducer (8) and the driving motor (9) are fixedly installed at the outer end of the top pin seat installation upper body (18), and the driving motor (9) is in transmission connection with the top pin head (15) through the synchronous belt transmission mechanism; The linear driving assembly comprises a slide rail installation plate (23), a slide rail (21) and a sliding block (24), and further comprises a cylinder one (10) or a cylinder two (2); the top pin seat installation lower body (25) is slidably installed on the slide rail installation plate (23) through the sliding block (24) and the slide rail (21) and is driven by the cylinder one (10) or the cylinder two (2).

5. The detection device for measuring the bending amount of the gear division circle of a gear shaft according to claim 1, characterized by The displacement sensor assembly (13) comprises a displacement sensor (35), a lever (31), a contact rod (30) and a main body support (32); the contact rod (30) is fixedly installed at the front end of the lever (31), the lever (31) is arranged on the main body support (32) and is rotatably connected through a pin shaft and a bearing, the displacement sensor (35) is fixed at the rear of the main body support (32), and the rear end of the lever (31) is in contact with the probe of the displacement sensor (35) through a tension spring (33).

6. The detection device for measuring the bending amount of the gear division circle of a gear shaft according to claim 5, characterized by A gas cylinder three (34) is installed at the rear side of the main body support (32), and the upper end of the gas cylinder three (34) abuts against the rear end of the lever (31).

7. The detection device for measuring the bending amount of the gear division circle of a gear shaft according to claim 5, characterized by The displacement sensor assembly (13) further comprises a displacement sensor connecting base (36) and a displacement sensor mounting base (37), the main body support (32) is fixedly connected with the displacement sensor connecting base (36) through bolts and a waist-shaped groove, so that the height of the contact rod (30) can be adjusted; the displacement sensor connecting base (36) is fixedly connected with the displacement sensor mounting base (37), and the displacement sensor mounting base (37) is slidingly matched with the inverted T-shaped groove of the workbench (12).

8. The detection apparatus for measuring gear shaft gear pitch circle bending amount according to claim 1, characterized by, The floating support block (4) comprises a support main body (42), a support block head (38), a support block seat (39) and a spring sleeve (40) connected in sequence from top to bottom, a vertical blind hole is arranged on the support main body (42) and slidingly matched with the spring sleeve (40), and an extension spring (41) is installed in the spring sleeve (40), so that the support block head (38) can float up and down relative to the support main body (42).

9. The detection device for measuring the bending amount of the gear division circle of a gear shaft according to claim 8, characterized by, A threaded hole is arranged on the side wall of the support main body (42), a locking bolt is installed on the threaded hole of the support main body (42), the spring sleeve (40) is locked and fixed, and the support block head (38) is lowered. Strip-shaped grooves are respectively arranged on the left and right side walls of the support main body (42), a pair of spring sheets (44) are correspondingly installed in the strip-shaped grooves, the spring sheets (44) are fixedly connected with a support block mounting base (45) through a connecting sheet (43), and the support block mounting base (45) is slidingly matched with the inverted T-shaped groove of the workbench (12).

10. The detection apparatus for measuring gear shaft gear pitch circle bending amount according to claim 1, characterized by, The laser sensor assembly (14) comprises a laser sensor (26), a laser sensor stand (27), a laser sensor fixing block (28) and a laser sensor mounting base (29), the laser sensor (26) is installed on the laser sensor stand (27), the laser sensor stand (27) is movably connected with the laser sensor fixing block (28) through bolts and a waist-shaped groove in the vertical direction, and the laser sensor mounting base (29) is horizontally slidingly matched with the inverted T-shaped groove of the workbench (12).

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