Differential assembly backlash measuring tool

Abstract

The utility model discloses a differential assembly backlash measuring tool comprising a pedestal, the pedestal is provided with a left supporting plate, a middle supporting plate and a right supporting plate which are used for supporting a differential housing, the middle supporting plate is provided with a pressing plate used for fixing the position of the differential housing, and the right supporting plate is provided with a right supporting plate. The pressing plate and the middle supporting plate are connected with a locking mechanism used for fixing the positions of the pressing plate and the middle supporting plate, one side of the left supporting plate is provided with a fixing mechanism used for fixing a bevel gear on the left side of the differential mechanism, and a bevel gear on the right side of the differential mechanism is connected with a measuring spline. The fixing mechanism is arranged on the sliding table and inserted into or away from the differential along with displacement of the sliding table. Through the above mode, the device can manually measure the actual assembly gear backlash of a produced differential workpiece, a manual value is used for matching an equipment measurement value, the difference between the equipment measurement value and an actual value is eliminated, and data reliability verification and auxiliary quality failure analysis are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of differentials, in particular to a differential assembly tooth side clearance measuring tool. Background Art

[0002] In the design and development of axles, the differential assembly is an important component. Its main function is to enable the left and right (or front and rear) drive wheels to rotate at different speeds, and the requirement for the differential tooth side clearance is one of the important parameters of the differential, which directly affects the NVH performance of the vehicle during differential. Therefore, whether the tooth side clearance can be accurately measured can directly reflect the performance of the vehicle during differential.

[0003] However, the differential assembly clearance can only be measured by equipment, and there is no reference comparison to see whether the machine value and the actual value match. Utility Model Content

[0004] The main technical problem solved by the utility model is to provide a differential assembly tooth side clearance measuring tool, which can manually measure the actual assembly tooth side clearance of the produced differential workpiece, and the manual value is used to match the equipment measurement value, eliminate the difference between the equipment measurement and the actual value, and facilitate data reliability verification and auxiliary quality failure analysis.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a differential assembly tooth side clearance measuring tool, including: a base, on which a left support plate, a middle support plate and a right support plate for supporting the differential housing are arranged, a pressure plate for fixing the position of the differential housing is arranged on the middle support plate, a locking mechanism for fixing the position of the pressure plate and the middle support plate is connected to the pressure plate and the middle support plate, a fixing mechanism for fixing the left bevel gear of the differential is arranged on one side of the left support plate, and a measuring spline is connected to the right bevel gear of the differential, a slide is slidably fitted on the base, and a fixing mechanism is arranged on the slide and is inserted into or away from the differential with the displacement of the slide.

[0006] Preferably, the fixing mechanism includes an adjusting nut, an expanding core, and an expanding sleeve. The adjusting nut is arranged on one side of the slide, and one end of the expanding sleeve is arranged on the other side of the slide. One end of the expanding core cooperates with the expanding sleeve, and the other end of the expanding core cooperates with the adjusting nut thread. The expanding core causes the expanding sleeve to expand or reset, and the expanding sleeve cooperates with the left bevel gear.

[0007] Preferably, a slide rail is provided on the base, a slider is provided on the slide rail, and the slide platform is provided on the slider.

[0008] Preferably, one end of the pressure plate is flipped and connected to one end of the middle support plate, and a fixing mechanism is arranged at the other end of the pressure plate and the middle support plate. The fixing mechanism includes a fixing nut and a fixing screw. One end of the fixing screw is flipped and connected to the middle support plate, and a receiving groove that can accommodate the fixing screw is provided on the pressure plate. The fixing nut is against the pressure plate and cooperates with the fixing screw thread.

[0009] Preferably, the middle support plate and the pressure plate are detachably connected with fittings, and the fittings match the outer edge of the differential housing.

[0010] Preferably, the fitting is made of silicone rubber.

[0011] Preferably, a tooth clearance measuring instrument is provided above the measuring spline.

[0012] The beneficial effects of the utility model are:

[0013] The differential is supported in position by the left support plate, the middle support plate and the right support plate, and the position of the differential is fixed by the action of the pressure plate and the locking mechanism. The expansion sleeve is tightened or reset by controlling the position of the expansion core, thereby fixing the left bevel gear of the differential. The measuring spline is inserted into the right bevel gear of the differential and keyed and rotated therewith, so that the measurement result is obtained by the tooth clearance measuring instrument, and then the actual tooth side clearance of the differential is obtained, thereby eliminating the difference between the equipment measurement and the actual number, and providing support for reliability verification and auxiliary quality failure analysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a cross-sectional view of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the measuring spline of the utility model.

[0017] The markings of the components in the accompanying drawings are as follows:

[0018] 1. Base; 2. Left support plate; 3. Middle support plate; 4. Right support plate; 5. Press plate; 6. Measuring spline;

[0019] 7. Slide; 8. Adjusting nut; 9. Expanding core; 10. Expanding sleeve; 11. Slide rail; 12. Sliding block; 13. Fixing nut; 14. Fixing screw; 15. Receiving groove; 16. Fitting part; 17. Differential; 18. Left bevel gear; 19. Right bevel gear. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Physical quantities in formulas, if not separately marked, should be understood as basic quantities of the basic units of the International System of Units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation or integration.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] Example:

[0024] refer to Figure 1-Figure 3 A differential assembly tooth side clearance measuring tool comprises: a base 1, a left support plate 2, a middle support plate 3 and a right support plate 4 for supporting a differential 17 housing are bolted to the base 1, the left support plate 2, the middle support plate 3 and the right support plate 4 are respectively used to support the left, middle and right parts of the differential 17 housing, a pressure plate 5 for fixing the position of the differential 17 housing is flipped and connected to the middle support plate 3, a locking mechanism for fixing the position of the pressure plate 5 and the middle support plate 3 is connected to the pressure plate 5 and the middle support plate 3, a fixing mechanism for fixing the left bevel gear 18 of the differential 17 is arranged on one side of the left support plate 2, a measuring spline 6 is connected to the right bevel gear 19 of the differential 17, a slide 7 is slidably matched on the base 1, and the fixing mechanism is installed on the slide 7 and is inserted into or away from the differential 17 assembly with the displacement of the slide 7.

[0025] refer to Figure 1-Figure 2The fixing mechanism includes an adjusting nut 8, an expanding core 9, and an expanding sleeve 10. The adjusting nut 8 is installed on one side of the slide 7. One end of the expanding sleeve 10 is bolted to the other side of the slide 7. One end of the expanding core 9 cooperates with the expanding sleeve 10. The other end of the expanding core 9 passes through the slide 7 and is threadedly engaged with the adjusting nut 8, so that the expanding sleeve 10 is expanded or reset when the expanding core 9 moves away from or approaches the differential 17. The expanding sleeve 10 cooperates with the left bevel gear 18. When the expanding sleeve 10 expands, the outer periphery of the expanding sleeve 10 is locked and fixed with the spline inside the left bevel gear 18;

[0026] By rotating the expanding core 9 to make it threadably cooperate with the adjusting nut 8, the expanding core 9 is moved away from or close to the differential 17. The end of the expanding core 9 close to the differential 17 is an inverted cone structure, and the end of the expanding sleeve 10 close to the differential 17 is an inverted buckle structure that cooperates with the inverted cone structure of the expanding core 9. Therefore, when the expanding core 9 moves away from the differential 17, the expanding core 9 forces the expanding sleeve 10 to expand, and then the outer edge of the expanding sleeve 10 is tightly fitted with the inner spline of the left bevel gear 18, and the friction force therebetween is much greater than the force when the left bevel gear 18 rotates. When the expanding core 9 moves toward the differential 17, one end of the expanding sleeve 10 no longer contacts the inner wall of the expanding sleeve 10, so that the expanding sleeve 10 is reset, and then the outer edge of the expanding sleeve 10 no longer contacts the left bevel gear 18.

[0027] refer to Figure 1-Figure 2 In order to facilitate the control of the fixing mechanism as a whole to move closer to or away from the differential 17, a slide rail 11 is installed on the base 1, and a slider 12 is slidably matched on the slide rail 11. The slide table 7 is bolted to the slider 12, so that the position of the fixing mechanism as a whole relative to the differential 17 can be controlled by controlling the position of the slider 12.

[0028] refer to Figure 1-Figure 2 One end of the pressure plate 5 is flipped and connected with one end of the middle support plate 3, and a fixing mechanism is arranged at the other end of the pressure plate 5 and the middle support plate 3. The fixing mechanism includes a fixing nut 13 and a fixing screw 14. One end of the fixing screw 14 is flipped and connected with the middle support plate 3. A receiving groove 15 capable of accommodating the fixing screw 14 is opened on the pressure plate 5. The length of the fixing screw 14 is greater than the length of the accommodating groove 15, so that the fixing screw 14 passes through the accommodating groove 15 and is higher than the upper end of the pressure plate 5. The operator manually screws the fixing screw 14 on the fixing screw 14, so that the fixing nut 13 is against the pressure plate 5 and cooperates with the fixing screw 14 thread, so that the position of the differential 17 is fixed under the joint action of the pressure plate 5 and the middle support plate 3.

[0029] refer to Figure 1-Figure 2 In order to adapt to the differentials 17 of different sizes, the middle support plate 3 and the pressure plate 5 are detachably connected with a fitting 16 , and the fitting 16 matches with the outer edge of the differential 17 housing.

[0030] refer to Figure 1-Figure 2In order to avoid damage to the housing of the differential 17 during clamping, the fitting 16 can be supported by a silicone rubber material.

[0031] refer to Figure 1-Figure 2 A tooth clearance measuring instrument is provided above the measuring spline 6.

[0032] refer to Figure 1-Figure 3 After the expansion core 9 expands the left bevel gear 18 of the differential 17, the measuring spline 6 is inserted into the right bevel gear 19 of the differential 17 and matched with it. The measuring spline 6 is rotated left and right according to the torque requirement of the measured differential 17 using a torque wrench, and the measurement results of the tooth side clearance measuring instrument are recorded.

[0033] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A differential assembly tooth side clearance measuring tool, characterized in that: include: A base (1), wherein the base (1) is provided with a left support plate (2), an intermediate support plate (3) and a right support plate (4) for supporting a housing of a differential (17); the intermediate support plate (3) is provided with a pressure plate (5) for fixing the position of the housing of the differential (17); the pressure plate (5) and the intermediate support plate (3) are connected to a locking mechanism for fixing the position of the pressure plate (5) and the intermediate support plate (3); a fixing mechanism for fixing a left bevel gear (18) of the differential (17) is provided on one side of the left support plate (2); a measuring spline (6) is connected to a right bevel gear (19) of the differential (17); a slide table (7) is slidably matched on the base (1); the fixing mechanism is arranged on the slide table (7) and is inserted into or away from the differential (17) as the slide table (7) is displaced.

2. The differential assembly tooth backlash measuring tool according to claim 1, characterized in that: The fixing mechanism comprises an adjusting nut (8), an expanding core (9), and an expanding sleeve (10); the adjusting nut (8) is arranged on one side of the slide (7); one end of the expanding sleeve (10) is arranged on the other side of the slide (7); one end of the expanding core (9) cooperates with the expanding sleeve (10); the other end of the expanding core (9) cooperates with the thread of the adjusting nut (8); the expanding core (9) expands or resets the expanding sleeve (10); and the expanding sleeve (10) cooperates with the left bevel gear (18).

3. The differential assembly tooth backlash measuring tool according to claim 2, characterized in that: The base (1) is provided with a slide rail (11), the slide rail (11) is provided with a slider (12), and the slide platform (7) is provided on the slider (12).

4. The differential assembly tooth backlash measuring tool according to claim 1, characterized in that: One end of the pressing plate (5) is connected to one end of the intermediate support plate (3) in a flipping manner, and the fixing mechanism is arranged at the other end of the pressing plate (5) and the intermediate support plate (3). The fixing mechanism comprises a fixing nut (13) and a fixing screw (14). One end of the fixing screw (14) is connected to the intermediate support plate (3) in a flipping manner. A receiving groove (15) capable of receiving the fixing screw (14) is provided on the pressing plate (5), and the fixing nut (13) is pressed against the pressing plate (5) and is threadably matched with the fixing screw (14).

5. The differential assembly tooth backlash measuring tool according to claim 1, characterized in that: The intermediate support plate (3) and the pressure plate (5) are detachably connected with a fitting (16), and the fitting (16) matches the outer edge of the housing of the differential (17).

6. The differential assembly gear side clearance measuring tool according to claim 5, characterized in that: The fitting piece (16) is made of silicone rubber.

7. The differential assembly gear backlash measuring tool according to claim 1, characterized in that: A tooth clearance measuring instrument is arranged above the measuring spline (6).

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