Automobile transmission shaft precision detection equipment

Abstract

An automobile transmission shaft precision detection device belongs to the technical field of automobile transmission shaft detection and comprises a base, a side plate A and a side plate B are fixedly mounted on the upper surface of the base, a threaded rod is rotatably mounted between the side plate A and the side plate B, the outer surface of the threaded rod is in threaded connection with a sliding table, and a supporting plate is fixedly mounted on the upper surface of the sliding table. A rotating rod is rotatably installed in the supporting plate in a penetrating mode, a motor is fixedly installed on the left surface of the supporting plate, an abutting block is fixedly installed at the right end of the rotating rod, an I-shaped clamping plate is rotatably installed in the side plate B in a penetrating mode, a plurality of axis positioning grooves are formed in the left surface of the I-shaped clamping plate, and the circle centers of the axis positioning grooves and the circle center of the abutting block are located at the same transverse horizontal position. According to the utility model, the whole process of determining the axis position of the automobile transmission shaft is simple and rapid to operate, the data deviation of subsequent detection can be effectively reduced, and the accuracy of a detection result is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile transmission shaft detection, and specifically relates to an automobile transmission shaft precision detection device. Background Art

[0002] The automobile drive shaft is the core component of automobile power transmission, responsible for transmitting the power generated by the engine to the wheels to drive the car. Therefore, the concentricity of the drive shaft is crucial to the performance and safety of the car. Concentricity refers to the degree of overlap of the axis lines at both ends of the drive shaft. If the concentricity is not good, the drive shaft will cause vibration, noise and wear during operation. In severe cases, it may even cause the drive shaft to break, affecting driving safety.

[0003] After searching, the Chinese authorized patent in the relevant field, the patent announcement number is: CN213902214U, and the patent name is: A high-precision concentric detection fixture for an automobile transmission shaft, including a base, a vertical plate 1 is fixedly provided on the top of one side of the base, a vertical plate 2 is slidably provided on the top of the other side of the base, a vertical plate 3 is fixedly provided on the top of the rear side of the base, the vertical plate 3 is located behind the vertical plate 1 and the vertical plate 2, and a turntable is rotatably provided on the upper part of the adjacent side between the vertical plate 1 and the vertical plate 2, a motor 1 is fixedly embedded on the upper part of the side of the vertical plate 1 away from the vertical plate 2, the output end of the motor 1 passes through the vertical plate 1 and is fixedly connected to the adjacent turntable, a support plate is slidably provided on the upper part of the front side of the vertical plate 3, a cylinder 1 is symmetrically fixedly provided on the front side of the support plate, the output end of the cylinder 1 is fixedly connected to the fixed plate, and a dial indicator is fixedly provided on the front side of the fixed plate. The utility model has a simple structure and is easy to use, and can facilitate the concentric detection of the transmission shaft.

[0004] Although the high-precision concentric detection fixture of the automobile drive shaft in the above-mentioned prior art can clamp the drive shaft and drive it to rotate, in the actual clamping operation, it is difficult for the user to ensure that the fixture is accurately aligned with the central axis position of the drive shaft, and the operation is difficult. In addition, the inconvenience of this operation can easily lead to deviations in the detection data, which in turn has an adverse effect on the accuracy of the detection results. For this reason, another automobile drive shaft precision detection device is provided to solve the above-mentioned technical problems. Utility Model Content

[0005] With regard to the high-precision concentric detection jig for automobile transmission shafts in the prior art, it is difficult to ensure that the fixture is accurately aligned with the center axis position of the transmission shaft before the transmission shaft is detected, and the operation is difficult. The utility model provides an automobile transmission shaft precision detection device. By setting a clamping plate with an axis positioning groove, when the automobile transmission shaft is detected, the right end of the automobile transmission shaft can be inserted into the corresponding inner diameter axis positioning groove for positioning, and then it can be tightened and fixed with a tightening block. The entire process of determining the axis position of the automobile transmission shaft is simple and quick to operate, which can reduce the data deviation of subsequent detections and ensure the accuracy of the detection results. It effectively solves the problem that the high-precision concentric detection jig for automobile transmission shafts in the prior art is difficult to ensure that the fixture is accurately aligned with the center axis position of the transmission shaft before the transmission shaft is detected, and the operation is difficult. Its specific technical scheme is as follows:

[0006] A vehicle transmission shaft precision detection device comprises a base, a side plate A and a side plate B are fixedly installed on the upper surface of the base, a threaded rod with a handwheel is rotatably installed between the side plate A and the side plate B, a slide is threadedly connected to the outer surface of the threaded rod, the slide is slidably installed on the table surface of the base, and a support plate is fixedly installed on the upper surface of the slide, a rotating rod is rotatably installed through the support plate, a motor is fixedly installed on the left surface of the support plate, the output shaft of the motor is fixedly connected to the left end of the rotating rod, a clamping block is fixedly installed on the right end of the rotating rod, an I-shaped splint is rotatably installed through the side plate B, a plurality of axial positioning grooves are opened on the left surface of the I-shaped splint, the center of the axial positioning groove and the center of the clamping block are in the same horizontal position, a movable frame is installed on the upper surface of the base, a detachable laser interferometer is installed on the front end of the movable frame, and the detection end of the laser interferometer is arranged parallel to and above the center of the axial positioning groove.

[0007] In the above technical solution, the number of the axis positioning grooves is three, and the three axis positioning grooves are opened in a manner that is reduced in size from the outside to the inside of the I-shaped clamping plate.

[0008] In the above technical solution, the diameters of the three axial positioning grooves are 180 mm, 165 mm and 150 mm respectively.

[0009] In the above technical solution, a rubber pad is fixedly mounted on the right surface of the pressing block.

[0010] In the above technical solution, two directional rods are fixedly installed between the side plate A and the side plate B, and the slide is slidably installed between the two directional rods.

[0011] In the above technical solution, two fixing plates are fixedly installed on the upper surface of the base, two fixing rods are fixedly installed between the two fixing plates, the movable frame includes an L-shaped upper frame and a bottom column, the L-shaped upper frame is installed on the upper end of the bottom column, and a lifting shell is fixedly installed on the front end of the L-shaped upper frame, the laser interferometer is installed in the lifting shell through a card connection, and two sockets are penetrated on the outer surface of the lower end of the bottom column, and the bottom column is slidably set between the two fixing rods through the two sockets.

[0012] In the above technical solution, a clamping bolt is threadedly installed through the front surface of the lifting shell, and the rear surface of the clamping bolt is in contact with the outer surface of the laser interferometer.

[0013] In the above technical solution, an adapter groove is provided on the upper surface of the base column, a rotating shaft is fixedly installed at the center of the lower surface of the L-shaped upper frame, the rotating shaft is rotatably installed in the adapter groove through two positioning bearings, an anti-slip rib is fixedly installed on the outer surface of the base column, a square sleeve is slidably installed between the L-shaped upper frame and the base column, and the lower surface of the square sleeve is in contact with the upper surface of the anti-slip rib.

[0014] Compared with the prior art, the utility model of an automobile transmission shaft precision detection device has the following beneficial effects:

[0015] The utility model provides an I-shaped clamping plate with an axis center positioning groove. When inspecting the automobile transmission shaft, the right end of the automobile transmission shaft can be inserted into the axis center positioning groove of the corresponding inner diameter for positioning, and then it can be tightened and fixed with a tightening block. The whole process of determining the axis center position of the automobile transmission shaft is simple and quick to operate, which can effectively reduce the data deviation of subsequent inspections and ensure the accuracy of the inspection results.

[0016] The utility model reasonably designs the combination of the movable frame and the laser interferometer. In practical applications, the detection point of the laser interferometer can be accurately controlled by flexibly adjusting the position of the movable frame. Compared with the traditional method of using a dial indicator to directly contact the surface of the transmission shaft, the non-contact measurement of the laser interferometer not only avoids possible damage or scratches on the surface of the transmission shaft, but also significantly improves the detection efficiency and accuracy, thereby ensuring that the quality of the transmission shaft after detection is not affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main structure of the utility model.

[0018] Figure 2 It is a rear view structural schematic diagram of the utility model.

[0019] Figure 3 It is a schematic diagram of the cross-sectional structure of the I-shaped splint of the utility model.

[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of the utility model.

[0021] Figure 5 It is a schematic diagram of the structure of the utility model when in use.

[0022] Figure 1-5 Among them: 1. base; 11. side panel A; 12. side panel B; 13. fixed plate; 14. fixed rod; 2. threaded rod; 21. handwheel; 3. directional rod; 4. slide; 41. support plate; 42. rotating rod; 43. motor; 44. tightening block; 45. rubber pad; 5. I-shaped splint; 51. axis positioning groove; 6. movable frame; 61. L-shaped upper frame; 611. lifting shell; 612. rotating shaft; 62. bottom column; 621. sleeve; 622. adapter groove; 63. anti-slip rib; 64. square sleeve; 7. laser interferometer; 8. tightening bolt. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-Figure 5 , the utility model provides a technical solution:

[0025] An automobile transmission shaft precision detection device comprises a base 1, a side plate A11 and a side plate B12 are fixedly installed on the upper surface of the base 1, a threaded rod 2 with a hand wheel 21 is rotatably installed between the side plate A11 and the side plate B12, a slide 4 is threadedly connected to the outer surface of the threaded rod 2, the slide 4 is slidably installed on the table of the base 1, and a support plate 41 is fixedly installed on the upper surface of the slide 4, a rotating rod 42 is rotatably installed in the support plate 41, a motor 43 is fixedly installed on the left surface of the support plate 41, and the output of the motor 43 is The output shaft is fixedly connected to the left end of the rotating rod 42, and a clamping block 44 is fixedly installed on the right end of the rotating rod 42. An I-shaped clamping plate 5 is rotatably installed in the side plate B12, and a plurality of axis positioning grooves 51 are opened on the left surface of the I-shaped clamping plate 5. The center of the axis positioning groove 51 and the center of the clamping block 44 are in the same horizontal position. A movable frame 6 is installed on the upper surface of the base 1, and a detachable laser interferometer 7 is installed at the front end of the movable frame 6. The detection end of the laser interferometer 7 is arranged parallel to the center of the axis positioning groove 51. Figure 1 As shown, the threaded rod 2 can be rotated by the hand wheel 21 to drive the slide 4 to slide left and right, thereby adjusting the clamping distance between the clamping block 44 and the I-shaped clamping plate 5;

[0026] Before use, the laser interferometer 7 is connected to a laptop computer via a data transmission line to ensure that the detected data is transmitted to the laptop computer for recording;

[0027] When using, according to Figure 1 and Figure 5 As shown, first, the right end of the automobile transmission shaft is accurately inserted into the axial positioning groove 51 of the I-shaped clamp 5. After insertion, ensure that the outer surface of the transmission shaft is tightly fitted with the inner wall of the axial positioning groove 51. Then, the threaded rod 2 is used to drive the slide 4 to move to the right to drive the clamping block 44 to firmly clamp the transmission shaft. After the fixation is completed, the motor 43 can be used to drive the rotating rod 42 to rotate, so that the clamping block 44 drives the automobile transmission shaft and the I-shaped clamp 5 to rotate together. In this process, the laser interferometer 7 is started to emit a laser beam to the surface of the transmission shaft and measure the interference pattern of the reflected light. These measurement data will reflect the coaxiality information of the transmission shaft and are recorded and analyzed by a laptop computer. The entire operation process is rigorous and steady to ensure the accuracy and reliability of the measurement results.

[0028] It should be noted that there are three axial positioning grooves 51, and the three axial positioning grooves 51 are opened in sequence from the outside to the inside of the I-shaped clamping plate 5. The diameters of the three axial positioning grooves 51 are 180mm, 165mm and 150mm respectively. The three axial positioning grooves 51 are respectively suitable for use with automobile transmission half-axles with right-end outer diameters of 180mm, 165mm and 150mm.

[0029] In addition, during the clamping process, in order to reduce the clamping damage caused by the abutment block 44 to the vehicle transmission half shaft, as Figure 1 As shown, a rubber pad 45 is fixedly installed on the right surface of the clamping block 44. The rubber pad 45 can be used to replace the clamping block 44 to contact the automobile transmission half shaft, thereby reducing the damage to the automobile transmission half shaft during the clamping process.

[0030] In addition, in order to ensure the stability of the slide 4 when sliding left and right, Figure 1 As shown, two directional rods 3 are fixedly installed between the side panel A11 and the side panel B12 (the directional rod 3 on the rear side cannot be shown in the figure due to visual problems), and the slide 4 is slidably installed between the two directional rods 3. The two directional rods 3 can be used to orient the moving slide 4, thereby enhancing its stability during sliding.

[0031] Specifically, if Figure 2As shown, two fixing plates 13 are fixedly installed on the upper surface of the base 1, and two fixing rods 14 are fixedly installed between the two fixing plates 13. The movable frame 6 includes an L-shaped upper frame 61 and a bottom column 62. The L-shaped upper frame 61 is installed on the upper end of the bottom column 62, and a lifting shell 611 is fixedly installed on the front end of the L-shaped upper frame 61. The laser interferometer 7 is installed in the lifting shell 611 through a card connection. Two sleeves 621 are provided on the outer surface of the lower end of the bottom column 62. The bottom column 62 is slidably set between the two fixing rods 14 through the two sleeves 621 to realize the movable frame 6 horizontally sliding left and right on the base 1. The sliding adjustment of the position of the movable frame 6 can drive the laser interferometer 7 to slide horizontally and adjust the detection position, thereby facilitating the concentricity detection from different positions on the outer surface of the automobile transmission shaft.

[0032] Specifically, if Figure 1 As shown, a locking bolt 8 is threadedly installed through the front surface of the lifting shell 611, and the rear surface of the locking bolt 8 is in contact with the outer surface of the laser interferometer 7. After the laser interferometer 7 is placed inside the lifting shell 611, the locking bolt 8 is used to tighten it to ensure its stability. When the laser interferometer 7 needs to be disassembled, it is only necessary to loosen the locking bolt 8 appropriately to release its contact with the laser interferometer 7.

[0033] Specifically, in order to prevent the use position of the laser interferometer 7 from affecting the path position of the vehicle transmission shaft when it is placed, such as Figure 4 As shown, a transfer groove 622 is provided on the upper surface of the bottom column 62, a rotating shaft 612 is fixedly installed at the center of the lower surface of the L-shaped upper frame 61, and the rotating shaft 612 is rotatably installed in the transfer groove 622 through two positioning bearings, and a non-slip rib 63 is fixedly installed on the outer surface of the bottom column 62, and a square sleeve 64 is slidably installed between the L-shaped upper frame 61 and the bottom column 62, and the lower surface of the square sleeve 64 is in contact with the upper surface of the non-slip rib 63;

[0034] When placing the automobile transmission shaft between the abutment block 44 and the I-shaped clamping plate 5 for clamping and fixing, the square sleeve 64 can be slid upward first to disengage it from the transition between the L-shaped upper frame 61 and the bottom column 62, and then the position of the L-shaped upper frame 61 can be rotated to adjust the position to change the position of the laser interferometer 7 to avoid affecting the placement operation of the automobile transmission shaft. After the automobile transmission shaft is clamped and fixed, the L-shaped upper frame 61 is rotated and reset, and after the square sleeve 64 slides down to the upper surface of the anti-slip rib 63, the square sleeve 64 can be used to limit the L-shaped upper frame 61 and place it for rotation to ensure that the detection position of the laser interferometer 7 is in a calibrated state.

[0035] When placing the automobile transmission shaft between the clamping block 44 and the I-shaped clamping plate 5 for clamping and fixing, first slide the square sleeve 64 in the vertical direction until it is completely separated from the connection between the L-shaped upper frame 61 and the bottom column 62. Then, by adjusting the rotation angle of the L-shaped upper frame 61, the position of the laser interferometer 7 can be flexibly changed to avoid interference with the placement process of the automobile transmission shaft. When the automobile transmission shaft is securely clamped, the L-shaped upper frame 61 needs to be reset to its original position and the square sleeve 64 is moved along the lower slide track to the upper surface of the anti-slip rib 63. At this time, the square sleeve 64 will play a limiting role, effectively preventing the L-shaped upper frame 61 from unnecessary rotation, and ensuring that the detection position of the laser interferometer 7 is in a precisely calibrated state.

Claims

1. An automobile transmission shaft accuracy detection device, comprising a base (1), characterized in that: A side plate A (11) and a side plate B (12) are fixedly mounted on the upper surface of the base (1); a threaded rod (2) with a hand wheel (21) is rotatably mounted between the side plate A (11) and the side plate B (12); a slide table (4) is threadedly connected to the outer surface of the threaded rod (2); the slide table (4) is slidably mounted on the table surface of the base (1); a support plate (41) is fixedly mounted on the upper surface of the slide table (4); a rotating rod (42) is rotatably mounted through the support plate (41); a motor (43) is fixedly mounted on the left surface of the support plate (41); an output shaft of the motor (43) is connected to the rotating rod ( The left end of the rotating rod (42) is fixedly connected, the right end of the rotating rod (42) is fixedly installed with a clamping block (44), the side plate B (12) is penetrated by an I-shaped clamping plate (5) for rotatable installation, the left surface of the I-shaped clamping plate (5) is provided with a plurality of axial positioning grooves (51), the center of the axial positioning groove (51) and the center of the clamping block (44) are in the same horizontal position, the upper surface of the base (1) is installed with a movable frame (6), the front end of the movable frame (6) is installed with a detachable laser interferometer (7), the detection end of the laser interferometer (7) is arranged parallel to and above the center of the axial positioning groove (51).

2. The automobile transmission shaft accuracy detection device according to claim 1, characterized in that: The number of the axial positioning grooves (51) is three, and the three axial positioning grooves (51) are opened in a manner that decreases from the outside to the inside of the I-shaped clamping plate (5).

3. The automobile transmission shaft precision detection device according to claim 2, characterized in that: The diameters of the three axial positioning grooves (51) are 180 mm, 165 mm and 150 mm respectively.

4. The automobile transmission shaft accuracy detection device according to claim 2 or 3, characterized in that: A rubber pad (45) is fixedly mounted on the right surface of the abutting block (44).

5. The automobile transmission shaft accuracy detection device according to claim 1, characterized in that: Two directional rods (3) are fixedly mounted between the side plate A (11) and the side plate B (12), and the slide (4) is slidably mounted between the two directional rods (3).

6. The automobile transmission shaft accuracy detection device according to claim 1, characterized in that: Two fixing plates (13) are fixedly mounted on the upper surface of the base (1), and two fixing rods (14) are fixedly mounted between the two fixing plates (13); The movable frame (6) comprises an L-shaped upper frame (61) and a bottom column (62); the L-shaped upper frame (61) is mounted on the upper end of the bottom column (62); a lifting shell (611) is fixedly mounted on the front end of the L-shaped upper frame (61); the laser interferometer (7) is mounted in the lifting shell (611) by being inserted and snap-fitted; two sleeve openings (621) are formed on the outer surface of the lower end of the bottom column (62); and the bottom column (62) is slidably arranged between the two fixing rods (14) through the two sleeve openings (621).

7. The automobile transmission shaft accuracy detection device according to claim 6, characterized in that: A tightening bolt (8) is threadedly installed through the front surface of the supporting shell (611), and the rear surface of the tightening bolt (8) is in contact with the outer surface of the laser interferometer (7).

8. The automobile transmission shaft accuracy detection device according to claim 7, characterized in that: An adapter groove (622) is provided on the upper surface of the bottom column (62); a rotating shaft (612) is fixedly mounted at the center of the lower surface of the L-shaped upper frame (61); the rotating shaft (612) is rotatably mounted in the adapter groove (622) via two positioning bearings; an anti-slip rib (63) is fixedly mounted on the outer surface of the bottom column (62); a square sleeve (64) is slidably mounted between the L-shaped upper frame (61) and the bottom column (62); and the lower surface of the square sleeve (64) is in contact with the upper surface of the anti-slip rib (63).

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