Differential housing outer circle testing fixture capable of realizing accurate measurement

Abstract

The utility model discloses a differential housing excircle testing fixture capable of realizing accurate measurement, which relates to the technical field of differential housing measurement, and comprises a working plate, four corners of the bottom end of the working plate are fixedly connected with supporting legs, the top end of the working plate is provided with a display mechanism, the inner surface of the working plate is provided with a damping mechanism, and the damping mechanism is connected with the working plate. The top end of the damping mechanism is fixedly connected with a measuring mechanism, and the top end of the operation plate is provided with a rotating mechanism. According to the differential mechanism shell outer circle testing fixture capable of realizing accurate measurement, the shell can be accurately fixed and stably rotated through the rotating mechanism, the size of the outer circle can be comprehensively and uniformly detected by measuring equipment such as a pneumatic measuring instrument, the measurement efficiency and precision are improved, errors caused by manual operation can be eliminated, and the working efficiency of the differential mechanism shell outer circle testing fixture is improved. The whole-circle continuous measurement of the outer circle at different positions is ensured, any potential shape error or deviation is identified more accurately, and the quality control level of the differential shell is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to differential mechanism shell measurement technical field, especially relates to a differential mechanism shell outer circle testing fixture of realization accurate measurement. BACKGROUND

[0002] The accurate measurement of differential mechanism shell outer circle is very important for guaranteeing the quality of automobile transmission system. The traditional manual measurement method has problems of low efficiency, big error and poor stability, therefore a high-precision and automatic measurement testing fixture is needed, and in order to overcome these problems, the modern differential mechanism shell outer circle measurement testing fixture adopts advanced automation technology.

[0003] The differential mechanism shell outer circle testing fixture in the prior art mainly comprises a measuring mechanism, a display mechanism, a workbench and supporting legs, when in use, the differential mechanism shell is placed on the measuring mechanism, the probe of the measuring mechanism contacts the outer circle surface of the workpiece, when the gap between the pneumatic probe and the workpiece surface changes, the flow rate and pressure of the airflow also change, the sensor inside the instrument monitors the airflow change in real time, thereby measuring the change amount of the gap, and the measured data is displayed through the display mechanism, but in the actual use process, the differential mechanism shell cannot be uniformly rotated during the measurement, so that the equipment cannot comprehensively and uniformly detect the size of the outer circle, the measurement efficiency and precision are reduced, and the measurement data error becomes large.

[0004] Therefore, the differential mechanism shell outer circle testing fixture for realizing accurate measurement is provided for solving the above problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the deficiencies of the prior art, the differential mechanism shell cannot be uniformly rotated during the measurement in the actual use process, so that the equipment cannot comprehensively and uniformly detect the size of the outer circle, the measurement efficiency and precision are reduced, and the measurement data error becomes large, and the differential mechanism shell outer circle testing fixture for realizing accurate measurement is provided.

[0006] The utility model discloses a technical scheme that solves its technical problem is adopted: a differential mechanism shell outer circle testing fixture of realization accurate measurement, including operation board, all fixedly connected with support leg in four corners of the bottom of operation board, the top of operation board is provided with display mechanism, the inner surface of operation board is provided with damping mechanism, the top fixedly connected with measuring mechanism of damping mechanism, measuring mechanism and display mechanism are connected through pipeline, the top of operation board is provided with rotating mechanism, the rotating mechanism includes with the fixed plate of operation board top fixed connection and placing board, placing board and fixed plate fixed connection, the inner surface rotationally connected with rotating lever of fixed plate, one end of rotating lever is fixedly connected with the double -shaft motor of fixed plate one side fixed connection, the other end fixedly connected with the threaded rod of placing board rotationally connected of double -shaft motor, the threaded rod outer surface is connected with the sliding block of screw thread, the top fixedly connected with placing box of placing board, the bottom fixedly connected with the push board of placing box inner surface sliding connection of sliding block, the outer surface rotationally connected with the ring of rotating lever, the inner surface fixedly connected with the communicating pipe of placing box inner surface one side and extends to the inner surface fixed connection of ring.

[0007] Preferably, the inner surface of the rotating rod is fixedly connected with three cylinders, the inner surfaces of the three cylinders are slidably connected with piston rods, the mutually remote ends of the three piston rods are fixedly connected with inner support blocks, and the inner surface of the ring is communicated with the inner surface of the rotating rod.

[0008] Preferably, the outer surfaces of the three inner support blocks are fixedly connected with a plurality of rubber strips, and the plurality of rubber strips are linearly and equidistantly distributed.

[0009] Preferably, one side of the fixed plate is fixedly connected with an L-shaped plate, the L-shaped plate is rotationally connected with the rotating rod, and one side of the L-shaped plate is fixedly connected with one side of the ring.

[0010] Preferably, one side of the double-shaft motor is fixedly connected with a limiting rod fixedly connected with the placing plate, and the limiting rod is slidably connected with the sliding block.

[0011] Preferably, the damping mechanism comprises a rectangular groove opened in the top of the operation board, the inner surface bottom of the rectangular groove is fixedly connected with four damping rods, and the top ends of the four damping rods are fixedly connected with a rectangular plate fixedly connected with the lower end of the measuring mechanism.

[0012] Preferably, the outer surfaces of the four damping rods are sleeved with springs, and the two ends of the four springs are fixedly connected with the inner surface bottom of the rectangular groove and the bottom end of the rectangular plate respectively.

[0013] Due to the adoption of the above technical scheme, the utility model has the following technical progress compared with the prior art:

[0014] 1. The utility model provides a realize accurate measurement's differential mechanism shell outer circle testing fixture, can realize accurate fixing and stable rotation to shell through rotating mechanism, this can ensure that pneumatic quantity appearance etc. Measurement equipment can detect the size of outer circle comprehensively, evenly, not only has improved the efficiency and accuracy of measurement, can eliminate the error of manual operation, ensure that the whole circle continuous measurement is carried out to the outer circle in different positions, thereby more accurately identify any potential shape error or deviation, improve the quality control level of differential mechanism shell.

[0015] 2. The utility model provides a realize accurate measurement's differential mechanism shell outer circle testing fixture, through damping mechanism, damping rod and spring's cooperation use, can carry out damping operation to measuring mechanism, can effectively slow down the influence of external vibration to measuring mechanism, thereby keep the stability in the measurement process, can avoid the measurement error caused by vibration, ensure the accuracy of pneumatic quantity appearance or other measurement equipment, improve differential mechanism shell outer circle size measurement's accuracy, reduce external interference, improve the reliability of detection result, and then improve the quality control level of differential mechanism shell. ACCURACY

[0016] Figure 1 It is the whole structure schematic diagram of the utility model;

[0017] Figure 2 It is the rectangular groove structure schematic diagram of the utility model;

[0018] Figure 3 It is the rotating mechanism section structure schematic diagram of the utility model;

[0019] Figure 4 It is the Figure 3 Amplification structure schematic diagram of place A in the utility model;

[0020] Figure 5 It is the damping mechanism structure schematic diagram of the utility model.

[0021] In the drawing: 1, operation board; 2, support leg; 3, measuring mechanism; 4, display mechanism; 5, rotating mechanism; 51, fixed plate; 52, rotating rod; 53, placement plate; 54, sliding block; 55, placement box; 56, push plate; 57, limiting rod; 58, communication pipe; 59, threaded rod; 510, circular ring; 511, cylinder; 512, piston rod; 513, inner support block; 514, rubber strip; 515, L-shaped plate; 516, double-shaft motor; 6, damping mechanism; 61, rectangular groove; 62, damping rod; 63, rectangular plate; 64, spring. DETAILED DESCRIPTION

[0022] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0023] Specific embodiments are given below.

[0024] Please refer to Figure 1 Figure 5 ​The utility model provides a technical scheme: a differential mechanism shell outer circle testing fixture of realization accurate measurement, including operation board 1, all fixedly connected with support leg 2 in four corner places of the bottom of operation board 1, the top of operation board 1 is provided with display mechanism 4, the inner surface of operation board 1 is provided with damping mechanism 6, the top fixedly connected with measuring mechanism 3 of damping mechanism 6, measuring mechanism 3 and display mechanism 4 are connected through pipeline, the top of operation board 1 is provided with rotating mechanism 5, rotating mechanism 5 includes with the fixed plate 51 of operation board 1 top fixed connection and the placement board 53, the placement board 53 is fixedly connected with fixed plate 51, the inner surface rotationally connected of fixed plate 51 has rotating lever 52, and one end of rotating lever 52 is fixedly connected with the double shaft motor 516 of fixed plate 51 one side fixed connection, the other end fixedly connected of double shaft motor 516 has with the screw rod 59 of placement board 53 rotationally connected, the outer surface of screw rod 59 is connected with sliding block 54, the top fixedly connected of placement board 53 has placement box 55, the bottom fixedly connected of sliding block 54 has with the inner surface sliding connection of placement box 55 push plate 56, the inner surface of rotating lever 52 fixedly connected has three cylinders 511, the inner surface of three cylinders 511 all slidingly connected has piston rod 512, and the end of mutual far away of three piston rods 512 all is fixedly connected with inner support block 513, the inner surface of circular ring 510 is connected with the inner surface of rotating lever 52, when needing to measure differential mechanism shell outer circle, differential mechanism shell is placed on measuring mechanism 3 at this moment, subsequently through the output end of one end of double shaft motor 516 through coupling drive screw rod 59 rotation, under the action of screw connection, make sliding block 54 movement, and then push plate 56 in the inner surface sliding of placement box 55, push the hydraulic oil in placement box 55 through the communication pipe 58 into the inner chamber of rotating lever 52 in circular ring 510, and then into the inner chamber of three cylinders 511, push three piston rods 512 mutual far away, make the inner support block 513 on piston rod 512 abut on the inner surface of differential mechanism shell, subsequently through the output end of the other end of double shaft motor 516 through coupling drive rotating lever 52 rotation, and then make differential mechanism shell rotation, the size of differential mechanism shell outer circle is detected through measuring mechanism 3, can realize the accurate fixing and stable rotation of shell, this can ensure that the measuring equipment such as pneumatic gauge can detect the size of outer circle comprehensively, evenly, not only improve the efficiency and precision of measurement, but also eliminate the error caused by manual operation, ensure that the whole circle continuous measurement is carried out to the outer circle in different positions, so as to more accurately identify any potential shape error or deviation, improve the quality control level of differential mechanism shell.

[0025] The measuring mechanism 3 and the display mechanism 4 in the above are the components of the mature aerodynamic gauge in the prior art, and are mature technical means and equipment. In the present scheme, the probe of the measuring mechanism 3 contacts the outer circular surface of the workpiece. When the gap between the aerodynamic probe and the surface of the workpiece changes, the flow rate and pressure of the airflow also change. The sensor inside the instrument monitors the change of the airflow in real time, thereby measuring the change amount of the gap, and displays the measured data through the display mechanism 4. The internal structure, principle and connection mode are not described.

[0026] As shown in Figure 3 and Figure 4 , the outer surface of the three inner supporting blocks 513 is fixedly connected with a plurality of rubber strips 514, and the plurality of rubber strips 514 are linearly and equidistantly distributed. When the inner supporting block 513 tightly abuts against the inner surface of the differential housing, the rubber strip 514 can increase the friction and protect the differential housing at the same time.

[0027] As shown in Figure 3 , one side of the fixed plate 51 is fixedly connected with an L-shaped plate 515, the L-shaped plate 515 is rotationally connected with the rotating rod 52, and one side of the L-shaped plate 515 is fixedly connected with one side of the circular ring 510. The L-shaped plate 515 can improve the rotation stability of the rotating rod 52.

[0028] As shown in Figure 3 , the double-shaft motor 516 is fixedly connected with a limiting rod 57 which is fixedly connected with the placement plate 53, and the limiting rod 57 is slidingly connected with the sliding block 54. Since the sliding block 54 is threadedly connected with the threaded rod 59, the sliding of the limiting rod 57 and the sliding block 54 can limit the movement position of the sliding block 54.

[0029] As shown in Figure 5 , the damping mechanism 6 includes a rectangular groove 61 opened at the top end of the working plate 1, four damping rods 62 fixedly connected with the inner surface bottom of the rectangular groove 61, a rectangular plate 63 fixedly connected with the lower end of the measuring mechanism 3, and four springs 64 sleeved on the outer surfaces of the four damping rods 62. The two ends of the four springs 64 are fixedly connected with the inner surface bottom of the rectangular groove 61 and the bottom end of the rectangular plate 63, respectively. The damping rods 62 and the springs 64 can be used in cooperation to dampen the measuring mechanism 3, effectively reduce the influence of external vibration on the measuring mechanism 3, maintain the stability during the measurement, avoid measurement errors caused by vibration, ensure the accuracy of the aerodynamic gauge or other measuring equipment, improve the accuracy of the differential housing outer circle size measurement, reduce external interference, improve the reliability of the detection result, and thus improve the quality control level of the differential housing.

[0030] The double-shaft motor 516 and the damping rod 62 are both mature technical means and conventional technical designs in the prior art, and the internal structure, connection mode and principle thereof will not be described herein.

[0031] The working principle of the utility model is: when in use, the differential shell is placed on the measuring mechanism 3, and when the outer circle of the differential shell needs to be measured, the one end output end of the double-shaft motor 516 is started to drive the threaded rod 59 to rotate through the shaft coupling, under the action of the threaded connection, the sliding block 54 moves, and then pushes the sliding of the push plate 56 on the inner surface of the placing box 55, pushes the hydraulic oil in the placing box 55 to enter the inner cavity of the rotating rod 52 of the circular ring 510 through the communication pipe 58, and then enters the inner cavities of the three cylinders 511, pushes the three piston rods 512 to move away from each other, so that the inner support block 513 on the piston rod 512 abuts against the inner surface of the differential shell, then the other end output end of the double-shaft motor 516 is started to drive the rotating rod 52 to rotate through the shaft coupling, and then the differential shell rotates, the size of the outer circle of the differential shell is detected by the measuring mechanism 3, and the measured data is displayed by the display mechanism 4, the damping rod 62 and the spring 64 are used in cooperation, the damping operation of the measuring mechanism 3 can be carried out, the influence of external vibration on the measuring mechanism 3 can be effectively reduced, and the stability in the measuring process can be maintained, and the measurement error caused by vibration can be avoided.

[0032] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A differential housing outer circle measuring tool for accurate measurement, comprising a workbench (1), characterized in that: The bottom end of the workboard (1) is fixedly connected with support legs (2), the top end of the workboard (1) is provided with a display mechanism (4), the inner surface of the workboard (1) is provided with a damping mechanism (6), the top end of the damping mechanism (6) is fixedly connected with a measuring mechanism (3), the measuring mechanism (3) is connected with the display mechanism (4) through a pipeline, the top end of the workboard (1) is provided with a rotating mechanism (5), the rotating mechanism (5) comprises a fixed plate (51) fixedly connected with the top end of the workboard (1) and a placing plate (53), the placing plate (53) is fixedly connected with the fixed plate (51), the inner surface of the fixed plate (51) is rotatably connected with a rotating rod (52), one end of the rotating rod (52) is fixedly connected with a double-shaft motor (516) fixedly connected with one side of the fixed plate (51), the other end of the double-shaft motor (516) is fixedly connected with a threaded rod (59) rotatably connected with the placing plate (53), the outer surface of the threaded rod (59) is threadedly connected with a sliding block (54), the top end of the placing plate (53) is fixedly connected with a placing box (55), the bottom end of the sliding block (54) is fixedly connected with a push plate (56) slidably connected with the inner surface of the placing box (55), the outer surface of the rotating rod (52) is rotatably connected with a circular ring (510), the inner surface of the placing box (55) is fixedly connected with a communication pipe (58) penetrating through and extending to the inner surface of the circular ring (510).

2. The differential case outer circle measuring fixture of claim 1, wherein: The inner surface of the rotating rod (52) is fixedly connected with three cylinders (511), the inner surfaces of the three cylinders (511) are slidably connected with piston rods (512), the ends of the three piston rods (512) away from each other are fixedly connected with inner support blocks (513), and the inner surface of the circular ring (510) is in communication with the inner surface of the rotating rod (52).

3. The differential case outer circle measuring fixture of claim 2, wherein: The outer surfaces of the three inner support blocks (513) are fixedly connected with a plurality of rubber strips (514), and the plurality of rubber strips (514) are linearly and equidistantly distributed.

4. The differential case outer circle measuring fixture of claim 1, wherein: One side of the fixed plate (51) is fixedly connected with an L-shaped plate (515), the L-shaped plate (515) is rotatably connected with the rotating rod (52), and one side of the L-shaped plate (515) is fixedly connected with one side of the circular ring (510).

5. The precision measuring differential case outer circle gauge of claim 1, wherein: One side of the double-shaft motor (516) is fixedly connected with a limiting rod (57) fixedly connected with the placing plate (53), and the limiting rod (57) is slidably connected with the sliding block (54).

6. The precision measuring differential case outer circle gauge of claim 1, wherein: The damping mechanism (6) comprises a rectangular groove (61) formed in the top end of the workboard (1), the inner surface of the rectangular groove (61) is fixedly connected with four damping rods (62), and the top ends of the four damping rods (62) are fixedly connected with a rectangular plate (63) fixedly connected with the lower end of the measuring mechanism (3).

7. The precision measuring differential case outer circle gauge of claim 6, wherein: The outer surfaces of the four damping rods (62) are sleeved with springs (64), and the two ends of the four springs (64) are fixedly connected with the inner surface bottom of the rectangular groove (61) and the bottom end of the rectangular plate (63), respectively.

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