A detecting device and method for the distance of the spherical end face of a differential case

Abstract

A detecting device for the distance between the spherical end faces of a differential housing, comprising a spherical positioning column and a plurality of detecting pads I with different thicknesses; the spherical positioning column comprises an upper positioning column and a lower positioning column which are in sliding fit, a compression spring is arranged between the upper positioning column and the lower positioning column, the upper end face of the upper positioning column is a positioning spherical surface I which is matched with the upper spherical surface of the differential housing, and the lower end face of the lower positioning column is a positioning spherical surface II which is matched with the lower spherical surface of the differential housing; the detecting pad I comprises a detecting plane I which can be matched with the detecting cylindrical surface of the upper positioning column and a placing plane I which is matched with the inner end face of the differential housing, and the distance between the detecting plane I and the placing plane I is the thickness H of the detecting pad I. The rapid and efficient process control for detecting the distance between the spherical end faces of the differential housing can be realized, which can replace the three-coordinate measuring machine and other complex inspection tools, and greatly saves the measurement cost.

Description

Technical Field

[0001] The present invention relates to the technical field of differential housing detection, and specifically to a detection device and method for the distance between the spherical end face of a differential housing. Background Art

[0002] The differential housing is one of the key parts in the automobile drive axle assembly. Its function is to transmit power to both half shafts while allowing the two half shafts to rotate at different speeds, so as to meet the requirement that the two wheels can travel at unequal distances as purely rolling as possible, reducing the friction between the tire and the ground. The differential is essential in the automobile transmission system, and the form and position tolerances of the inner end face and spherical surface of the differential housing relative to the installation position are particularly important. The dimensional accuracy of the differential housing is related to the overall performance of the entire differential during use.

[0003] For the differential housing with a hemispherical inner end face type, after the spherical surface and the inner end face are machined, the current inspection methods for the distance between the center of the sphere and the inner end face mostly use coordinate measuring machines or other complex inspection tools. Whether it is coordinate measuring machine inspection or other complex inspection tool inspection, there are certain limitations. Its data collection is evaluated by several points, and the actual use reliability is not strong. In practice, the detection efficiency is low, and the process quality control is cumbersome. This is the deficiency in the prior art. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a detection device and method for the distance between the spherical end face of a differential housing in view of the deficiencies of the prior art, realizing fast and efficient process control for the detection of the distance between the spherical end face of the differential housing, which can replace coordinate measuring machines and other complex inspection tools, and greatly save the measurement cost.

[0005] The present solution is achieved through the following technical measures: A detection device for the distance between the spherical end face of a differential housing includes a spherical positioning column and a plurality of detection pads Ⅰ with different thicknesses; the spherical positioning column includes an upper positioning column and a lower positioning column that are slidably matched, a compression spring is arranged between the upper positioning column and the lower positioning column, the upper end face of the upper positioning column is a positioning spherical surface Ⅰ that cooperates with the upper spherical surface of the differential housing, and the lower end face of the lower positioning column is a positioning spherical surface Ⅱ that cooperates with the lower spherical surface of the differential housing; the detection pad Ⅰ includes a detection plane Ⅰ that can cooperate with the detection cylindrical surface of the upper positioning column and a placement plane Ⅰ that cooperates with the inner end face of the differential housing, and the distance between the detection plane Ⅰ and the placement plane Ⅰ is the thickness H of the detection pad Ⅰ.

[0006] Preferably, an inner hole Ⅰ is provided at the lower part of the upper positioning column, the upper part of the lower positioning column can be inserted into the inner hole Ⅰ, an inner hole Ⅱ is provided at the upper part of the lower positioning column, and the compression spring is arranged between the bottom end of the inner hole Ⅰ and the bottom end of the inner hole Ⅱ.

[0007] Preferably, one end of the compression spring is connected to the bottom end of the inner hole I, and the other end of the compression spring is connected to the bottom end of the inner hole II.

[0008] Preferably, the thickness of the detection cushion block I is designed and manufactured according to the limit deviation of the distance between the spherical center and the inner end face.

[0009] A method for detecting the distance between the spherical end face of a differential housing. After the spherical surface and the inner end face of the differential housing are processed, the distance between the spherical center and the inner end face is measured. The specific operation steps include:

[0010] (1) Invert the differential housing so that the left end face of the differential housing is at the bottom and the right end face is at the top; place the spherical positioning post into the differential housing through the window of the differential housing. The positioning spherical surface I fits with the upper spherical surface, and the positioning spherical surface II fits with the lower spherical surface. The inspection cushion block I is placed between the left inner end face and the detection cylindrical surface. By using a plurality of detection cushion blocks I with different thicknesses to inspect the distance between the left inner end face and the detection cylindrical surface, it is possible to quickly determine whether the distance between the spherical center and the left inner end face meets the requirements of the drawing during the implementation process;

[0011] (2) Invert the differential housing so that the right end face of the differential housing is at the bottom and the left end face is at the top; place the spherical positioning post into the differential housing through the window of the differential housing. The positioning spherical surface I fits with the upper spherical surface, and the positioning spherical surface II fits with the lower spherical surface. The inspection cushion block I is placed between the right inner end face and the detection cylindrical surface. By using a plurality of detection cushion blocks I with different thicknesses to inspect the distance between the right inner end face and the detection cylindrical surface, it is possible to quickly determine whether the distance between the spherical center and the right inner end face meets the requirements of the drawing during the implementation process.

[0012] Place the spherical positioning post into the differential housing through the window of the differential housing. Under the action of the compression spring, the positioning spherical surface I fits with the upper spherical surface, and the positioning spherical surface II fits with the lower spherical surface to form a positioning; place a plurality of detection cushion blocks I with different thicknesses between the inner end face and the detection cylindrical surface, so that the placement plane I fits with the inner end face, and the detection plane I fits with the detection cylindrical surface, and obtain the distance between the inner end face and the detection cylindrical surface. It is possible to quickly determine whether the distance between the spherical center and the inner end face meets the requirements of the drawing during the implementation process, and it is possible to achieve fast and efficient process control for detecting the distance between the spherical end faces of the differential housing, which can replace coordinate measuring machines and other complex inspection tools, greatly saving the measurement cost. The distance between the spherical end faces refers to the distance between the spherical center and the inner end face.

[0013] A detection device for the distance between the spherical end faces of a differential housing, comprising a spherical positioning column, a detection cushion block II, and a plurality of detection plug blocks with different thicknesses; the spherical positioning column comprises an upper positioning column and a lower positioning column that are slidably matched, a compression spring is arranged between the upper positioning column and the lower positioning column, the upper end face of the upper positioning column is a positioning spherical surface I that fits with the upper spherical surface of the differential housing, and the lower end face of the lower positioning column is a positioning spherical surface II that fits with the lower spherical surface of the differential housing; the detection cushion block II comprises a detection plane II that can fit with one end face of the detection cushion block and a placement plane II that fits with the inner end face of the differential housing, the distance between the detection plane II and the placement plane II is the thickness H of the detection cushion block II, and a positioning convex block that can be inserted into the inner hole is arranged at one end of the detection cushion block II on the placement plane II. During detection, the detection plug block is placed between the detection plane II and the detection cylindrical surface.

[0014] Preferably, an inner hole I is arranged at the lower part of the upper positioning column, the upper part of the lower positioning column can be inserted into the inner hole I, an inner hole II is arranged at the upper part of the lower positioning column, and the compression spring is arranged between the bottom end of the inner hole I and the bottom end of the inner hole II.

[0015] Preferably, one end of the compression spring is connected to the bottom end of the inner hole I, and the other end of the compression spring is connected to the bottom end of the inner hole II.

[0016] Preferably, the thickness of the detection plug block is designed and manufactured according to the limit deviation of the distance between the spherical center and the inner end face.

[0017] A detection method for the distance between the spherical end faces of a differential housing. After the spherical surface and the inner end face of the differential housing are processed, the distance from the spherical center to the inner end face is measured. The specific operation steps include:

[0018] (1) Place the spherical positioning column, the detection cushion block II, and the detection plug block into the differential housing through the window of the differential housing. The positioning spherical surface I fits with the upper spherical surface, the positioning spherical surface II fits with the lower spherical surface. Insert the positioning convex block of the detection cushion block II into the left inner hole so that the placement plane II fits with the left inner end face. Place the detection plug block between the detection plane II and the detection cylindrical surface. Use a plurality of detection plug blocks with different thicknesses to check the distance between the detection plane II and the detection cylindrical surface, and quickly determine whether the distance from the spherical center to the left inner end face meets the requirements of the drawing during the implementation process;

[0019] (2) Place the spherical positioning post, inspection pad II, and inspection plug into the differential housing through the window of the differential housing. The positioning spherical surface I fits with the upper spherical surface, and the positioning spherical surface II fits with the lower spherical surface. Insert the positioning protrusion of the inspection pad II into the right inner hole so that the placement plane II fits with the right inner end face. Place the inspection plug between the inspection plane II and the inspection cylindrical surface. Use inspection plugs of multiple different thicknesses to check the distance between the inspection plane II and the inspection cylindrical surface, and quickly determine whether the distance from the spherical center to the right inner end face meets the requirements of the drawing during the implementation process.

[0020] Place the spherical positioning post, inspection pad II, and inspection plug into the differential housing through the window of the differential housing. Under the action of the compression spring, the positioning spherical surface I fits with the upper spherical surface, and the positioning spherical surface II fits with the lower spherical surface to form a positioning. Insert the positioning protrusion of the inspection pad II into the inner hole so that the placement plane II fits with the inner end face to form a positioning. Place inspection plugs of multiple different thicknesses between the inspection plane II and the inspection cylindrical surface so that the inspection plane II fits with one end face of the inspection plug, and the other end face of the inspection plug fits with the inspection cylindrical surface to obtain the distance between the inner end face and the inspection cylindrical surface. Quickly determine whether the distance from the spherical center to the inner end face meets the requirements of the drawing during the implementation process. It can realize the fast and efficient process control of the spherical end face distance detection of the differential housing, can replace the coordinate measuring machine and other complex inspection tools, greatly saving the measurement cost. The spherical end face distance refers to the distance between the spherical center and the left inner end face or the right inner end face.

[0021] Thus, compared with the prior art, the present invention has outstanding substantive features and remarkable progress, and the beneficial effects of its implementation are also obvious. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the present invention, the drawings required for description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 Structural schematic of the differential housing Figure I ;

[0024] Figure 2 Structural schematic of the differential housing Figure II ;

[0025] Figure 3 Structural schematic diagram of the spherical positioning post;

[0026] Figure 4 Structural schematic diagram of the inspection pad I;

[0027] Figure 5 Schematic diagram for detecting the distance between the center of the sphere and the left inner end face in Embodiment 1;

[0028] Figure 6 Schematic diagram for detecting the distance between the center of the sphere and the right inner end face in Embodiment 1;

[0029] Figure 7 Schematic diagram of the structure of the detection cushion block II;

[0030] Figure 8 Schematic diagram of the structure of the measuring plug block;

[0031] Figure 9 Schematic diagram for detecting the distance between the center of the sphere and the left inner end face in Embodiment 2;

[0032] Figure 10 Schematic diagram for detecting the distance between the center of the sphere and the right inner end face in Embodiment 2.

[0033] In the figure: 1 - upper spherical surface, 2 - lower spherical surface, 3 - left inner end face, 4 - right inner end face, 5 - spherical positioning post, 5.1 - upper positioning post, 5.1.1 - positioning spherical surface I, 5.1.2 - detection cylindrical surface, 5.1.3 - inner hole I, 5.1.3.1 - bottom end of inner hole I, 5.2 - lower positioning post, 5.2.1 - positioning spherical surface II, 5.2.2 - inner hole II, 5.2.2.1 - bottom end of inner hole II, 5.3 - compression spring, 6 - detection cushion block I, 6.1 - detection plane I, 6.2 - placement plane I, 7 - window, 8 - left end face, 9 - right end face, 10 - detection cushion block II, 10.1 - detection plane II, 10.2 - placement plane II, 10.3 - positioning convex block, 11 - detection plug block, 12 - left inner hole, 13 - right inner hole. Specific implementation manner

[0034] In order to make the invention objectives, features, and advantages of the present invention more obvious and understandable, the following will use specific embodiments and accompanying drawings to clearly and completely describe the technical solutions protected by the present invention. Obviously, the following described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments in this patent, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of this patent.

[0035] Embodiment 1

[0036] As Figures 1-6As shown in the figure, a detection device for the distance of the spherical end face of a differential housing includes a spherical positioning post 5 and a plurality of detection pads I 6 with different thicknesses; the spherical positioning post 5 includes an upper positioning post 5.1 and a lower positioning post 5.2 that are slidably fitted, a compression spring 5.3 is arranged between the upper positioning post 5.1 and the lower positioning post 5.2, the upper end face of the upper positioning post 5.1 is a positioning spherical surface I 5.1.1 that fits with the upper spherical surface 1 of the differential housing, and the lower end face of the lower positioning post 5.2 is a positioning spherical surface II 5.2.1 that fits with the lower spherical surface 2 of the differential housing; the detection pad I 6 includes a detection plane I 6.1 that can fit with the detection cylindrical surface 5.1.2 of the upper positioning post 5.1 and a placement plane I 6.2 that fits with the inner end face of the differential housing, and the distance between the detection plane I 6.1 and the placement plane I 6.2 is the thickness H of the detection pad I 6. The thickness of the inspection pad I 6 is formed by the distance between the detection plane 6.1 and the placement plane 6.2. Preferably, its multiple different thicknesses H are designed and manufactured according to the limit deviation of the distance between the spherical center and the inner end face.

[0037] An inner hole I 5.1.3 is arranged at the lower part of the upper positioning post 5.1, the upper part of the lower positioning post 5.2 can be inserted into the inner hole I 5.1.3, an inner hole II 5.2.2 is arranged at the upper part of the lower positioning post 5.2, and the compression spring 5.3 is arranged between the bottom end 5.1.3.1 of the inner hole I and the bottom end 5.2.2.1 of the inner hole II. The setting method of the compression spring 5.3 can be the following two methods: (1) One end of the compression spring 5.3 is connected to the bottom end 5.1.3.1 of the inner hole I, and the other end of the compression spring 5.3 is connected to the bottom end 5.2.2.1 of the inner hole II; (2) The compression spring 5.3 is placed between the inner hole I 5.1.3 and the inner hole II 5.2.2, and both ends of the compression spring 5.3 are not connected to the inner hole I 5.1.3 and the inner hole II 5.2.2.

[0038] Place the spherical positioning post 5 into the differential housing from the window 7 of the differential housing. Under the action of the compression spring 5.3, the positioning spherical surface I 5.1.1 fits with the upper spherical surface 1, and the positioning spherical surface II 5.2.1 fits with the lower spherical surface 2 to form a positioning; place a plurality of detection pads I 6 with different thicknesses between the left inner end face 3 or the right inner end face 4 and the detection cylindrical surface 5.1.2 respectively, so that the placement plane 6.2 fits with the left inner end face 3 or the right inner end face 4, and the detection plane I 6.1 fits with the detection cylindrical surface 5.1.2, and obtain the distance between the left inner end face 3 or the right inner end face 4 and the detection cylindrical surface 5.1.2, which can quickly determine whether the distance between the spherical center and the left inner end face 3 or the right inner end face 4 meets the requirements of the drawing during the implementation process, can replace the coordinate measuring machine and other complex inspection tools, and greatly saves the measurement cost.

[0039] In this patent, the distance of the spherical end face refers to the distance M between the spherical center and the left inner end face 3 or the right inner end face 4.

[0040] A method for detecting the distance between the spherical end faces of a differential housing. After the spherical surfaces (including the upper spherical surface 1 and the lower spherical surface 2) and the inner end faces (the left inner end face 3 and the right inner end face 4) of the differential housing are machined, the distance between the center of the sphere and the inner end faces (including the left inner end face 3 and the right inner end face 4) is measured. The specific operation steps include:

[0041] (1) Invert the differential housing so that the left end face 8 of the differential housing is at the bottom and the right end face 9 is at the top. Place the spherical positioning post 5 into the differential housing through the window 7 of the differential housing. The positioning spherical surface I 5.1.1 fits with the upper spherical surface 1, and the positioning spherical surface II 5.2.1 fits with the lower spherical surface 2. Place the inspection pad I 6 between the left inner end face 3 and the inspection cylindrical surface 5.1.2. By using inspection pads I 6 with multiple different thicknesses to inspect the distance between the left inner end face 3 and the inspection cylindrical surface 5.1.2, quickly determine whether the distance between the center of the sphere and the left inner end face 3 meets the requirements of the drawing during the implementation process. The diameter of the inspection cylinder corresponding to the inspection cylindrical surface 5.1.2 is D, and the distance M from the center of the sphere to the left inner end face 3 is M = H + 0.5D, where H is the thickness H of the used inspection pad I 6. Here, the placement plane I 6.2 of the inspection pad I 6 fits with the left inner end face 3, and the inspection plane I 6.1 fits with the inspection cylindrical surface 5.1.2.

[0042] (2) Invert the differential housing so that the right end face 9 of the differential housing is at the bottom and the left end face 8 is at the top. Place the spherical positioning post 5 into the differential housing through the window of the differential housing. The positioning spherical surface I 5.1.1 fits with the upper spherical surface 1, and the positioning spherical surface II 5.2.1 fits with the lower spherical surface 2. Place the inspection pad I 6 between the right inner end face 4 and the inspection cylindrical surface 5.1.2. By using inspection pads I 6 with multiple different thicknesses to inspect the distance between the right inner end face 4 and the inspection cylindrical surface 5.1.2, quickly determine whether the distance between the center of the sphere and the right inner end face 4 meets the requirements of the drawing during the implementation process. The diameter of the inspection cylinder corresponding to the inspection cylindrical surface 5.1.2 is D, and the distance M from the center of the sphere to the right inner end face 4 is M = H + 0.5D, where H is the thickness H of the used inspection pad I 6. Here, the placement plane I 6.2 of the inspection pad I 6 fits with the right inner end face 4, and the inspection plane I 6.1 fits with the inspection cylindrical surface 5.1.2.

[0043] Embodiment 2

[0044] As Figures 1-3, As shown in FIGS. 7 - 10, a detection device for the distance between the spherical end faces of a differential housing includes a spherical positioning post 5, a detection pad II 10, and a plurality of detection plug blocks 11 with different thicknesses; the spherical positioning post 5 includes an upper positioning post 5.1 and a lower positioning post 5.2 that are slidably engaged, a compression spring 5.3 is arranged between the upper positioning post 5.1 and the lower positioning post 5.2, the upper end face of the upper positioning post 5.1 is a positioning spherical surface I 5.1.1 that fits with the upper spherical surface 1 of the differential housing, and the lower end face of the lower positioning post 5.2 is a positioning spherical surface II 5.2.1 that fits with the lower spherical surface 2 of the differential housing; the detection pad II 10 includes a detection plane II 10.1 that can cooperate with one end face of the detection plug block 11 and an installation plane II 10.2 that cooperates with the inner end face of the differential housing, the distance between the detection plane II 10.1 and the installation plane II 10.2 is the thickness H of the detection pad II 10, the detection pad II 10 is provided with a positioning convex block 10.3 at one end of the installation plane II 10.2 that can be inserted into the inner hole, during detection, the detection plug block 11 is placed between the detection plane II 10.1 and the detection cylindrical surface 5.1.2.

[0045] An inner hole I 5.1.3 is arranged at the lower part of the upper positioning post 5.1, the upper part of the lower positioning post 5.2 can be inserted into the inner hole I 5.1.3, an inner hole II 5.2.2 is arranged at the upper part of the lower positioning post 5.2, and the compression spring 5.3 is arranged between the bottom end 5.1.3.1 of the inner hole I and the bottom end 5.2.2.1 of the inner hole II. The setting method of the compression spring 5.3 can be the following two methods: (1) One end of the compression spring 5.3 is connected to the bottom end 5.1.3.1 of the inner hole I, and the other end of the compression spring 5.3 is connected to the bottom end 5.2.2.1 of the inner hole II; (2) The compression spring 5.3 is placed between the inner hole I 5.1.3 and the inner hole II 5.2.2, and both ends of the compression spring 5.3 are not connected to the inner hole I 5.1.3 and the inner hole II 5.2.2.

[0046] Preferably, the thickness of the detection plug block 11 is designed and manufactured according to the limit deviation of the distance between the spherical center and the inner end face.

[0047] In this patent, the distance between the spherical end faces refers to the distance M between the spherical center and the left inner end face 3 or the right inner end face 4.

[0048] A method for detecting the distance between the spherical end faces of a differential housing. After the spherical surfaces (including the upper spherical surface 1 and the lower spherical surface 2) and the inner end faces (including the left inner end face 3 and the right inner end face 4) of the differential housing are processed, the distance between the spherical center and the inner end face is measured. The specific operation steps include:

[0049] (1) Place the spherical positioning post 5, the detection pad II 10, and the detection plug 11 into the differential housing through the window 7 of the differential housing. The positioning spherical surface I 5.1.1 is in contact with the upper spherical surface 1, and the positioning spherical surface II 5.2.1 is in contact with the lower spherical surface 2. Insert the positioning protrusion 10.3 of the detection pad II 10 into the left inner hole 12 so that the placement plane II 10.2 is in contact with the left inner end face 3. Place the detection plug 11 between the detection plane II 10.1 and the detection cylindrical surface 5.1.2. Use multiple detection plugs 11 with different thicknesses to check the distance between the detection plane II 10.1 and the detection cylindrical surface 5.1.2, and quickly determine whether the distance from the center of the sphere to the left inner end face 3 meets the requirements of the drawing during the implementation process. The diameter of the detection cylinder corresponding to the detection cylindrical surface 5.1.2 is D, and the distance M from the center of the sphere to the left inner end face 3 is M = H1 + H2 + 0.5D, where H1 is the distance between the detection plane II 10.1 and the placement plane II 10.2, which is a standard value; H2 is the thickness of the used detection plug 11. At this time, one end face of the detection plug 11 is in contact with the detection plane II 10.1, and the other end face of the detection plug 11 is in contact with the detection cylindrical surface 5.1.2.

[0050] (2) Place the spherical positioning post 5, the detection pad II 10, and the detection plug 11 into the differential housing through the window 7 of the differential housing. The positioning spherical surface I 5.1.1 is in contact with the upper spherical surface 1, and the positioning spherical surface II 5.2.1 is in contact with the lower spherical surface 2. Insert the positioning protrusion 10.3 of the detection pad II 10 into the right inner hole 13 so that the placement plane II 10.2 is in contact with the right inner end face 4. Place the detection plug 11 between the detection plane II 10.1 and the detection cylindrical surface 5.1.2. Use multiple detection plugs 11 with different thicknesses to check the distance between the detection plane II 10.1 and the detection cylindrical surface 5.1.2, and quickly determine whether the distance from the center of the sphere to the right inner end face 4 meets the requirements of the drawing during the implementation process. The diameter of the detection cylinder corresponding to the detection cylindrical surface 5.1.2 is D, and the distance M from the center of the sphere to the right inner end face 4 is M = H1 + H2 + 0.5D, where H1 is the distance between the detection plane II 10.1 and the placement plane II 10.2, which is a standard value; H2 is the thickness of the used detection plug 11. At this time, one end face of the detection plug 11 is in contact with the detection plane II 10.1, and the other end face of the detection plug 11 is in contact with the detection cylindrical surface 5.1.2.

[0051] Place the spherical positioning post 5, the detection pad II 10, and the detection plug 11 into the differential housing through the window 7 of the differential housing. Under the action of the compression spring 5.3, the positioning spherical surface I 5.1.1 fits with the upper spherical surface 1, and the positioning spherical surface II 5.2.1 fits with the lower spherical surface 2 to form a positioning. The positioning protrusion 10.3 of the detection pad II 10 is inserted into the inner hole, and the placement plane II 10.2 fits with the inner end face to form a positioning. Place a plurality of detection plugs 11 with different thicknesses between the detection plane II 10.1 and the detection cylindrical surface 5.1.2, so that the detection plane II 10.1 fits with one end face of the detection plug 11, and the other end face of the detection plug 11 fits with the detection cylindrical surface 5.1.2, obtaining the distance between the inner end face and the detection cylindrical surface 5.1.2. During the implementation process, it can quickly determine whether the distance between the ball center and the inner end face meets the requirements of the drawing, realize the fast and efficient process control of the spherical end face distance detection of the differential housing, can replace the coordinate measuring machine and other complex inspection tools, and greatly save the measurement cost.

[0052] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0053] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features, and creative features disclosed herein.

Claims

1. A detection device for the distance between the spherical end faces of a differential housing, characterized in that: it includes a spherical positioning column and a plurality of detection pads Ⅰ with different thicknesses; the spherical positioning column includes an upper positioning column and a lower positioning column that are slidably matched, a compression spring is arranged between the upper positioning column and the lower positioning column, the upper end face of the upper positioning column is a positioning spherical surface Ⅰ that fits with the upper spherical surface of the differential housing, and the lower end face of the lower positioning column is a positioning spherical surface Ⅱ that fits with the lower spherical surface of the differential housing; the detection pad Ⅰ includes a detection plane Ⅰ that can cooperate with the detection cylindrical surface of the upper positioning column and a placement plane Ⅰ that cooperates with the inner end face of the differential housing, and the distance between the detection plane Ⅰ and the placement plane Ⅰ is the thickness H of the detection pad Ⅰ; an inner hole Ⅰ is arranged at the lower part of the upper positioning column, the upper part of the lower positioning column can be inserted into the inner hole Ⅰ, an inner hole Ⅱ is arranged at the upper part of the lower positioning column, and the compression spring is arranged between the bottom end of the inner hole Ⅰ and the bottom end of the inner hole Ⅱ; the thickness of the detection pad Ⅰ is designed and manufactured according to the limit deviation of the distance between the spherical center and the inner end face.

2. The detection device for the distance between the spherical end faces of a differential housing according to claim 1, characterized in that: one end of the compression spring is connected to the bottom end of the inner hole Ⅰ, and the other end of the compression spring is connected to the bottom end of the inner hole Ⅱ.

3. A detection method for the distance between the spherical end faces of a differential housing using any one of the detection devices for the distance between the spherical end faces of a differential housing in claims 1-2, characterized in that: after the spherical surface and the inner end face of the differential housing are processed, the distance between the spherical center and the inner end face is measured, and the specific operation steps include: (1) Invert the differential housing so that the left end face of the differential housing is at the bottom and the right end face is at the top; place the spherical positioning column and the inspection pad Ⅰ into the differential housing through the window of the differential housing, the positioning spherical surface Ⅰ fits with the upper spherical surface, the positioning spherical surface Ⅱ fits with the lower spherical surface, and the inspection pad Ⅰ is placed between the left inner end face and the detection cylindrical surface. By using a plurality of detection pads Ⅰ with different thicknesses to inspect the distance between the left inner end face and the detection cylindrical surface, quickly determine whether the distance between the spherical center and the left inner end face meets the requirements of the drawing during the implementation process; (2) Invert the differential housing so that the right end face of the differential housing is at the bottom and the left end face is at the top; place the spherical positioning column and the inspection pad Ⅰ into the differential housing through the window of the differential housing, the positioning spherical surface Ⅰ fits with the upper spherical surface, the positioning spherical surface Ⅱ fits with the lower spherical surface, and the inspection pad Ⅰ is placed between the right inner end face and the detection cylindrical surface. By using a plurality of detection pads Ⅰ with different thicknesses to inspect the distance between the right inner end face and the detection cylindrical surface, quickly determine whether the distance between the spherical center and the right inner end face meets the requirements of the drawing during the implementation process.

4. A detection device for the distance between the spherical end faces of a differential housing, characterized in that: It includes a spherical positioning post, a detection cushion block II, and multiple detection plug blocks with different thicknesses; the spherical positioning post includes an upper positioning post and a lower positioning post that are slidably matched, a compression spring is arranged between the upper positioning post and the lower positioning post, the upper end face of the upper positioning post is a positioning spherical surface I that fits with the upper spherical surface of the differential housing, and the lower end face of the lower positioning post is a positioning spherical surface II that fits with the lower spherical surface of the differential housing; the detection cushion block II includes a detection plane II that can fit with one end face of the detection plug block and an installation plane II that fits with the inner end face of the differential housing, the distance between the detection plane II and the installation plane II is the thickness H of the detection cushion block II, and a positioning convex block that can be inserted into the inner hole is arranged at one end of the detection cushion block II on the installation plane II; an inner hole I is arranged at the lower part of the upper positioning post, the upper part of the lower positioning post can be inserted into the inner hole I, an inner hole II is arranged at the upper part of the lower positioning post, and the compression spring is arranged between the bottom end of the inner hole I and the bottom end of the inner hole II; the thickness of the detection plug block is designed and manufactured according to the limit deviation of the distance between the spherical center and the inner end face.

5. The differential housing spherical end face distance detection device according to claim 4, characterized in that: One end of the compression spring is connected to the bottom end of the inner hole I, and the other end of the compression spring is connected to the bottom end of the inner hole II.

6. A method for detecting the distance between the spherical end faces of a differential housing using any one of the differential housing spherical end face distance detection devices in claims 4-5, characterized in that: After the spherical surface and the inner end face of the differential housing are processed, the distance between the spherical center and the inner end face is measured. The specific operation steps include: (1) Place the spherical positioning post, the detection cushion block II, and the detection plug block into the differential housing through the window of the differential housing. The positioning spherical surface I fits with the upper spherical surface, and the positioning spherical surface II fits with the lower spherical surface. Insert the positioning convex block of the detection cushion block II into the left inner hole so that the installation plane II fits with the left inner end face. Place the detection plug block between the detection plane II and the detection cylindrical surface. Use multiple detection plug blocks with different thicknesses to check the distance between the detection plane II and the detection cylindrical surface, and quickly determine whether the distance between the spherical center and the left inner end face meets the requirements of the drawing during the implementation process; (2) Place the spherical positioning post, the detection cushion block II, and the detection plug block into the differential housing through the window of the differential housing. The positioning spherical surface I fits with the upper spherical surface, and the positioning spherical surface II fits with the lower spherical surface. Insert the positioning convex block of the detection cushion block II into the right inner hole so that the installation plane II fits with the right inner end face. Place the detection plug block between the detection plane II and the detection cylindrical surface. Use multiple detection plug blocks with different thicknesses to check the distance between the detection plane II and the detection cylindrical surface, and quickly determine whether the distance between the spherical center and the right inner end face meets the requirements of the drawing during the implementation process.

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