Differential housing inner sphere diameter testing fixture

Abstract

The utility model discloses a differential housing inner sphere diameter testing fixture comprising a pedestal, and a housing is arranged on the pedestal; a mounting column is arranged on the base and located in the shell, and a shell fixing assembly is arranged on the mounting column. The shell fixing assembly comprises a motor arranged in the mounting column, and the output end of the motor extends out of the containing groove and is provided with a driving gear. The front and rear ends of the driving gear are engaged with racks; the racks are in sliding connection with the mounting column; pressing plates are arranged at the ends, away from each other, of the racks; a base is arranged on the driving gear, and a laser distance measuring sensor is arranged on the base. According to the utility model, the laser distance measuring sensor used for measuring the diameter is directly installed on the housing fixing assembly, so that the inner diameter can be directly detected after the housing is fixed; the device is suitable for detecting the inner diameter of each part of the differential housing, is high in practicality, is simple in operation, and saves steps.

Description

Technical Field

[0001] The utility model relates to the technical field of differentials, in particular to a spherical diameter gauge for a differential housing. Background Art

[0002] A differential is a mechanism that enables the left and right (or front and rear) drive wheels to rotate at different speeds. The differential mainly consists of left and right half-axle gears, two planetary gears and a gear carrier, and is installed to adjust the speed difference between the left and right wheels. The differential can improve the ability of an automobile to pass through bad roads, that is, when the driving axle of the automobile idles, the differential can be quickly locked, so that the two driving axles form a rigid connection; most of the torque or even all of the torque is allowed to be transmitted to the non-slip driving axle, and the adhesion force thereof is fully utilized to generate sufficient traction force to enable the automobile to continue to drive.

[0003] A mechanism for restricting differential needs to be placed inside the differential housing. Therefore, the inner diameter needs to be controlled within a certain range. Detecting the inner diameter of the differential housing is an important means to control the quality and production accuracy of the differential housing. In the prior art, before detection, the differential housing needs to be fixed and limited first, and then the gauge is moved in and the position is adjusted. The operation is cumbersome and complex, and there is room for improvement. Summary of the Utility Model

[0004] The utility model aims to solve the technical problem in the prior art that there are multiple steps in detecting the inner diameter of a differential housing in the prior art, and the operation is cumbersome and complex, and provides a spherical diameter gauge for a differential housing.

[0005] To solve the above technical problem, the technical solution provided by the utility model is: a spherical diameter gauge for a differential housing, including a base, and a housing is located on the base; an installation column is arranged on the base and inside the housing, and a housing fixing component is arranged on the installation column;

[0006] The housing fixing component includes a receiving groove arranged on the installation column, a motor is arranged in the receiving groove, a shaft is arranged at the output end of the motor, and the shaft extends out of the receiving groove and is provided with a driving gear; racks are arranged at the front and rear ends of the driving gear, and tooth grooves capable of meshing with the driving gear are arranged on the sides of the racks close to the driving gear; the racks are all slidably connected with the installation column; pressing plates are arranged at the ends of the racks away from each other, and the pressing plates are all arc-shaped;

[0007] A base is arranged on the driving gear, and a laser distance sensor is arranged on the base.

[0008] Preferably, a plurality of threaded mounting holes are arranged on the base, and hexagon socket head cap screws are threadedly connected in the threaded mounting holes.

[0009] Preferably, a limit slider is provided under each of the racks, and limit sliding grooves capable of slidingly connecting with the limit sliders are provided at the front and rear ends of the accommodation groove on the upper surface of the mounting column.

[0010] Preferably, the cross-sections of the limit slider and the limit sliding groove are both T-shaped.

[0011] Preferably, anti-slip pads are provided on the mutually remote side surfaces of the pressing plates, and the anti-slip pads are all in contact with the inner side surface of the housing.

[0012] Preferably, the laser emission point of the laser distance sensor is located at the center of the circle of the base.

[0013] The advantages of the present utility model compared with the prior art are as follows:

[0014] 1. The laser distance sensor for diameter measurement is directly installed on the housing fixing assembly, so that the inner diameter detection can be directly carried out after the housing is fixed.

[0015] 2. Since the moving path distances of the two slide bars are the same, after the housing is fixed, the driving gear is always located at the central position. Therefore, no repositioning is required during diameter measurement, and the correct inner radius can be obtained.

[0016] 3. The differential housing is not a regular hollow cylinder, so there are multiple inner diameter values. The present utility model is applicable to the detection of the inner diameters of various parts of the differential housing, has strong practicability, simple operation, and saves steps. Description of the Drawings

[0017] Figure 1 is a schematic structural view of the present utility model.

[0018] Figure 2 is a schematic top view structural view of the present utility model.

[0019] Figure 3 is a schematic structural view of the housing and the housing fixing assembly of the present utility model.

[0020] Figure 4 is a schematic structural view of the housing of the present utility model.

[0021] As shown in the figure: 1. Base, 2. Housing, 3. Mounting column, 4. Accommodation groove, 5. Motor, 6. Driving gear, 7. Hexagon socket head cap screw, 8. Rack, 9. Limit slider, 10. Limit sliding groove, 11. Pressing plate, 12. Anti-slip pad, 13. Laser distance sensor. Detailed Description of the Embodiment

[0022] The following further describes the present utility model in detail with reference to the drawings.

[0023] Embodiment 1, in combination with the attached Figures 1-4, A sphericity gauge for a differential housing, comprising a base 1. A number of threaded mounting holes are provided on the base 1, and hexagon socket head cap screws 7 are threadedly connected in the threaded mounting holes, which can facilitate the overall installation at a convenient detection position such as on a machine tool. The housing 2 is located on the base 1 and can be directly placed outside the mounting post 3 during detection. It will automatically center and limit the housing 2 during the detection process. A mounting post 3 is provided on the base 1 and inside the housing 2, and a housing fixing component is provided on the mounting post 3.

[0024] Combined with the attached Figures 1-3 , The housing fixing component includes a receiving groove 4 provided on the mounting post 3. A motor 5 is provided in the receiving groove 4. A shaft is provided at the output end of the motor 5, and the shaft extends out of the receiving groove 4 and is provided with a driving gear 6. Rack bars 8 are provided at both the front and rear ends of the driving gear 6. Tooth grooves capable of meshing with the driving gear 6 are provided on the sides of the rack bars 8 close to the driving gear 6. The rack bars 8 can be moved by the meshing of the driving gear 6 and the tooth grooves. The rack bars 8 are all slidably connected to the mounting post 3, which can provide support for the rack bars 8. Pressing plates 11 are provided at the ends of the rack bars 8 away from each other. The pressing plates 11 are all arc-shaped and conform to the shape of the inner side surface of the housing 2. Anti-slip pads 12 are provided on the sides of the pressing plates 11 away from each other. The anti-slip pads 12 are all in contact with the inner side surface of the housing 2. The anti-slip pads 12 can increase the friction with the inner side surface of the housing 2, making the extrusion tighter and not easy to loosen.

[0025] Combined with the attached Figure 1 , Limit sliders 9 are provided under the rack bars 8. Limit sliding grooves 10 capable of slidably connecting with the limit sliders 9 are provided at both the front and rear ends of the mounting post 3 above the receiving groove 4. The cross-sections of the limit sliders 9 and the limit sliding grooves 10 are both T-shaped. The limit sliders 9 and the limit sliding grooves 10 are used to support the horizontal movement of the rack bars 8 on the mounting post 3. Being set in a T shape can prevent the limit sliders 9 from slipping out of the limit sliding grooves 10.

[0026] Combined with the attached Figures 1-3 , A base is provided on the driving gear 6, and a laser distance sensor 13 is provided on the base. The laser emission point of the laser distance sensor 13 is located at the center of the circle of the base. The radius can be obtained by calculating the distance between the laser emitted by the laser distance sensor and the inner side surface of the housing 2.

[0027] Working principle of the utility model: Place the housing 2 to be detected on the outside of the mounting post 3. The motor 5 drives the driving gear 6 to rotate through the shaft, so that the two racks 8 move in opposite directions through the engaged tooth grooves until the pressing plates 11 at the ends respectively abut against the inner side surfaces of the housing 2. At this time, the anti-slip pads 12 can increase the friction force with the housing 2, making the pressing more compact and not easy to slip off. At this time, the driving gear 6 is located at the central position inside the housing 2. The radius can be obtained by emitting laser by the laser distance sensor and calculating the distance from the inner side surface of the housing 2, which is also convenient for calculating the diameter. When it is necessary to measure the inner diameters of different positions of the housing 2, move the housing 2 outside the mounting post 3 and measure again.

[0028] The above has described the utility model and its implementation manners. Such description is not restrictive. What is shown in the drawings is only one of the implementation manners of the utility model, and the actual structure is not limited thereto. All in all, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments to this technical solution without creative work without departing from the creative purpose of the utility model, they shall fall within the protection scope of the utility model.

Claims

1. A spherical diameter gauge for a differential housing, characterized in that: It includes a base (1), and a housing (2) is located on the base (1); an installation post (3) is provided on the base (1) and inside the housing (2), and a housing fixing component is provided on the installation post (3). The housing fixing component includes a receiving groove (4) provided on the installation post (3), a motor (5) is provided in the receiving groove (4), a shaft is provided at the output end of the motor (5), and a driving gear (6) is provided at the end of the shaft extending out of the receiving groove (4); racks (8) are provided at both the front and rear ends of the driving gear (6), and tooth grooves capable of meshing with the driving gear (6) are provided on the sides of the racks (8) close to the driving gear (6); the racks (8) are all slidably connected to the installation post (3); pressing plates (11) are provided at the ends of the racks (8) away from each other, and the pressing plates (11) are all arc-shaped. A base is provided on the driving gear (6), and a laser distance sensor (13) is provided on the base.

2. The spherical diameter gauge for a differential case according to claim 1, wherein: A number of threaded mounting holes are provided on the base (1), and hex socket head cap screws (7) are threadedly connected in the threaded mounting holes.

3. The spherical diameter gauge for a differential case according to claim 1, wherein: Limit sliders (9) are provided under the racks (8), and limit sliding grooves (10) capable of slidably connecting with the limit sliders (9) are provided at both the front and rear ends of the installation post (3) above the receiving groove (4).

4. A sphericity gauge for a differential housing according to claim 3, wherein: The cross-sections of the limit sliders (9) and the limit sliding grooves (10) are both T-shaped.

5. The spherical diameter inspection tool within a differential housing according to claim 1, wherein: Anti-slip pads (12) are provided on the sides of the pressing plates (11) away from each other, and the anti-slip pads (12) are all in contact with the inner side surface of the housing (2).

6. A spherical diameter gauge for a differential housing according to claim 1, characterized in that: The laser emission point of the laser distance sensor (13) is located at the center of the circle of the base.

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