Differential housing end face dimension comprehensive testing fixture

Abstract

The utility model discloses a differential housing end face dimension comprehensive testing fixture, characterized by comprising a base plate, a positioning pin arranged on the base plate, a plurality of support blocks arranged on the base plate outside the positioning pin, the plurality of support blocks having the same height, a first dial indicator arranged on the base plate and capable of moving horizontally, and a second dial indicator arranged on the base plate and capable of moving horizontally. A first dial indicator is arranged on the base plate, a pointer of the first dial indicator is in contact with the upper end face of the differential shell, a second dial indicator which moves horizontally is arranged on the base plate, a pointer of the second dial indicator is in contact with the upper end face of a flange of the differential shell, a third dial indicator which moves horizontally is arranged on the base plate, and a pointer of the third dial indicator is provided with an adapter. A measuring rod is fixedly arranged on the adapter and makes contact with the lower end face of the differential shell. The utility model has the advantages of simple structure, convenient operation and low manufacturing cost, can quickly detect the dimensional accuracy of a plurality of mounting surfaces of the differential housing, and improves the detection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of inspection tools, specifically to a comprehensive inspection tool for the end face dimensions of a differential housing. Background Technology

[0002] A car differential is a mechanism that allows the left and right drive wheels to rotate at different speeds. It mainly consists of left and right half-shaft gears, two planetary gears, and a gear carrier. Its function is to ensure that the left and right wheels rotate at different speeds when the car is turning or driving on uneven surfaces, thus guaranteeing pure rolling motion for both drive wheels. The differential is designed to adjust the speed difference between the left and right wheels. In four-wheel drive, all four wheels must be connected to drive them. If the four wheels are mechanically connected, the car will not rotate at the same speed when driving on curves. To ensure that the rotational speed is relatively consistent when the car is driving on curves, a center differential is needed to adjust the speed difference between the front and rear wheels. The differential housing is an arc-shaped housing structure used to support and protect the differential. Due to the precision required for differential operation, the assembly accuracy of the differential housing needs to be checked during its manufacturing process.

[0003] Currently, most inspectors use coordinate measuring machines (CMMs) and other inspection equipment to check the assembly accuracy of differential housings. However, such inspection equipment is expensive and has low accuracy, making it unsuitable for large-scale differential housing inspections. This significantly reduces inspection efficiency and prevents efficient, rapid, and easy comprehensive inspection of differential housings. It also fails to make the process more user-friendly and convenient for operators, thus failing to adequately guarantee the machining quality requirements of differential housings. Summary of the Invention

[0004] To address the shortcomings of the existing technology, this utility model provides a comprehensive inspection tool for the end face dimensions of a differential housing. It has a simple structure and can quickly inspect the end face dimensions of the differential housing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A comprehensive gauge for measuring the end face dimensions of a differential housing, characterized in that: it includes a base plate, on which a locating pin is provided; multiple support blocks of equal height are provided on the base plate outside the locating pin; a first linear guide assembly is provided on the base plate, on which a first dial indicator base is provided, and on which a first dial indicator is provided, the pointer of the first dial indicator contacting the upper end face of the differential housing; a second linear guide assembly is provided on the base plate, on which a second dial indicator base is provided, and on which a second dial indicator is provided, the pointer of the second dial indicator contacting the upper end face of the differential housing flange; a third linear guide assembly is provided on the base plate, on which a third dial indicator base is provided, and on which a third dial indicator is provided; an adapter is provided on the pointer of the third dial indicator, and a measuring rod is fixedly provided on the adapter, the measuring rod contacting the lower end face of the differential housing.

[0007] Furthermore, the number of support blocks is three, and the three support blocks are evenly distributed outside the positioning pin.

[0008] Furthermore, the measuring end of the measuring rod is a ball head.

[0009] The advantages of this utility model include: simple structure, convenient operation, low manufacturing cost, and the ability to quickly detect the dimensional accuracy of multiple mounting surfaces of the differential housing, thereby improving detection efficiency. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0011] The present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0012] One such Figure 1The differential housing end face dimension inspection fixture shown includes a base plate 1, on which a locating pin 2 is provided for positioning the differential housing half-shaft hole. Multiple support blocks 3, of equal height, are provided on the base plate 1 outside the locating pin 2. The lower bottom surface of the differential housing flange is positioned on the support blocks 3, causing the lower end face of the differential housing to be suspended. A first linear guide assembly 4 is provided on the base plate 1, and a slidable first dial indicator base 5 is provided on the first linear guide assembly 4. A first dial indicator 6 is provided on the first dial indicator base 5, and the needle of the first dial indicator 6 contacts the upper end face of the differential housing for detecting the dimensional error of the upper end face of the differential housing, i.e., the mounting end face. A second linear guide assembly 7 is provided on the base plate 1, and a slidable second dial indicator base 8 is provided on the second linear guide assembly 7. A second dial indicator 9 is mounted on the second dial indicator base 8. The needle of the second dial indicator 9 contacts the upper end face of the differential housing flange and is used to detect the dimensional error of the upper end face of the differential housing. A third linear guide assembly 10 is mounted on the base plate 1, and a horizontally sliding third dial indicator base 11 is mounted on the third linear guide assembly 10. A third dial indicator 12 is mounted on the third dial indicator base 11, and an adapter 13 is mounted on the needle of the third dial indicator 12. The adapter 13 is fixed to the needle by screws. A horizontally arranged measuring rod 14 is fixedly mounted on the lower end of the adapter 13. The front end of the measuring rod 14 contacts the lower end face of the differential housing, and the measuring end of the measuring rod 14 is a ball head, used to detect the dimensional error of the lower end face of the differential housing.

[0013] To ensure high positioning accuracy and good support stability of the differential housing, three support blocks 3 are used, and the three support blocks 3 are evenly distributed on the outside of the positioning pin 2.

[0014] The technical solutions provided by the embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the embodiments of this utility model. The description of the above embodiments is only for helping to understand the principles of the embodiments of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the embodiments of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A differential case end face size comprehensive gauge, characterized in that: The utility model relates to a kind of differential shell alignment device, including bottom plate (1), the bottom plate (1) is provided with positioning pin (2), the bottom plate (1) outside of positioning pin (2) is provided with multiple support blocks (3), multiple support blocks (3) are equal height, the bottom plate (1) is provided with first linear guide rail assembly (4), the first linear guide rail assembly (4) is provided with first dial gauge seat (5), the first dial gauge seat (5) is provided with first dial gauge (6), the first dial gauge (6) needle is in contact with the upper end surface of differential shell, the bottom plate (1) is provided with second linear guide rail assembly (7), the second linear guide rail assembly (7) is provided with second dial gauge seat (8), the second dial gauge seat (8) is provided with second dial gauge (9), the second dial gauge (9) needle is in contact with the upper end surface of differential shell flange, the bottom plate (1) is provided with third linear guide rail assembly (10), the third linear guide rail assembly (10) is provided with third dial gauge seat (11), the third dial gauge seat (11) is provided with third dial gauge (12), the third dial gauge (12) needle is provided with adapter (13), the adapter (13) is fixed with measuring rod (14), the measuring rod (14) is in contact with the lower end surface of differential shell.

2. A differential case end face size comprehensive gauge according to claim 1, characterized in that: The number of support blocks (3) is three, and three support blocks (3) are evenly distributed outside the positioning pin (2).

3. A differential case end face size comprehensive gauge according to claim 1, characterized in that: The measuring end of the measuring rod (14) is a ball head.

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