Gear ring press-fitting mistake-proofing tool

Abstract

The utility model discloses a gear ring press-fitting mistake-proofing tool, which relates to the field of driving shaft assembly and comprises a tool body, a gear ring positioning groove is arranged on the upper end face of the tool body and used for placing a gear ring, a plurality of limiting convex teeth matched with an 18-tooth gear ring are arranged on the inner wall of the gear ring positioning groove, and when the 18-tooth gear ring is placed in the gear ring positioning groove, the limiting convex teeth are matched with the 18-tooth gear ring. Each limiting convex tooth is embedded in a corresponding tooth groove in the 18-tooth gear ring, so that the 18-tooth gear ring is completely placed in the gear ring positioning groove; and when the 17-tooth gear ring is placed in the gear ring positioning groove, at least one limiting convex tooth interferes with the 17-tooth gear ring, so that the 17-tooth gear ring cannot be completely placed in the gear ring positioning groove. According to the utility model, the four limiting convex teeth are additionally arranged at the gear ring placing position (namely the gear ring positioning groove), during press fitting, the 18-tooth gear ring can be normally placed in the tool, and the 17-tooth gear ring cannot be placed in the error-proofing tool, so that the error-proofing effect is achieved, and the 17-tooth gear ring is prevented from being mixed in the error-proofing tool.

Description

Technical Field

[0001] The utility model relates to the field of drive shaft assembly, in particular to a gear ring press-fit error-proofing tool. Background Art

[0002] At present, there are two specifications of gear rings required in the drive shaft assembly process, such as Figure 1 、 2 As shown in the figure, one is a 17-tooth gear ring A (2') and the other is an 18-tooth gear ring A (1'). Except for the difference of 1 tooth in the number of teeth, the other dimensions are the same and the appearance is very similar, which makes it easy for the material to be mixed. When the existing gear ring is pressed by the tooling, the gear ring is first placed in the press tooling, such as Figure 3 、 4 As shown in Figure 5, since the two gear rings with 17 teeth and 18 teeth, which are similar in appearance, can be placed in the press fitting tooling normally, there is a problem of material mixing. Then the bell housing A (3') is placed and the gear ring is pressed into the bell housing by the press. If the 18-tooth gear ring is required to be press-fitted, the 17-tooth gear ring will also be mixed in the press fitting. Figure 6 As shown, subsequent rework is required. Utility Model Content

[0003] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide a gear ring press-fitting anti-error tooling, so that the 18-tooth gear ring can be placed normally in the tooling, while the 17-tooth gear ring cannot be placed in the anti-error tooling, thereby playing an anti-error role and preventing the 17-tooth gear ring from mixing in.

[0004] The purpose of the present utility model is achieved through the following technical solutions: this gear ring press-fitting error-proofing tool comprises a tool body, the upper end surface of the tool body is provided with a gear ring positioning groove for inserting the gear ring, the inner wall of the gear ring positioning groove is provided with a plurality of limiting convex teeth matching the 18-tooth gear ring, when the 18-tooth gear ring is inserted into the gear ring positioning groove, each limiting convex tooth is embedded in the corresponding tooth groove on the 18-tooth gear ring, so that the 18-tooth gear ring is completely placed in the gear ring positioning groove; when the 17-tooth gear ring is inserted into the gear ring positioning groove, at least one limiting convex tooth interferes with the 17-tooth gear ring, so that the 17-tooth gear ring cannot be completely placed in the gear ring positioning groove.

[0005] As a further technical solution, a bell-shaped housing accommodating cavity is provided through the bottom of the gear ring positioning groove for accommodating the bell-shaped housing, and the bell-shaped housing is press-fitted with the 18-tooth gear ring by a press.

[0006] The beneficial effects of the utility model are:

[0007] 1. A limiting cam is added to the inner wall of the gear ring positioning groove. When matching the 18-tooth gear ring, it will interfere with the 17-tooth gear ring, thereby effectively distinguishing the 17-tooth and 18-tooth gear rings and ensuring that only the 18-tooth gear ring can be placed in the gear ring positioning groove of the tooling, eliminating customer complaints due to gear ring material mixing;

[0008] 2. A bell-shaped housing accommodating cavity is provided in the tool body, which can accommodate the bell-shaped housing and facilitate the press-fitting of the bell-shaped housing and the 18-tooth gear ring through a press. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural diagram of an 18-tooth ring gear in the prior art.

[0010] Figure 2 It is a structural diagram of a 17-tooth ring gear in the prior art.

[0011] Figure 3 It is a schematic cross-sectional structural diagram of a press-fitting tool in the prior art.

[0012] Figure 4 It is a schematic diagram of the top view of the press-fitting tooling in the prior art.

[0013] Figure 5 This is a schematic diagram of the structure of the 17-tooth gear ring and the 18-tooth gear ring after being placed in the press-fitting tooling in the prior art.

[0014] Figure 6 It is a schematic diagram of the structure of the bell housing and the 17-tooth gear ring and the 18-tooth gear ring after press-fitting in the prior art.

[0015] Figure 7 It is a schematic cross-sectional structural diagram of the tooling body in the present utility model.

[0016] Figure 8 It is a schematic diagram of the top structure of the tooling body in the utility model.

[0017] Figure 9 This is a schematic diagram of the structure of the 18-tooth gear ring and the tooling body after assembly in the utility model.

[0018] Figure 10 This is a schematic diagram of the structure of the 17-tooth gear ring and the tooling body after assembly in the utility model.

[0019] Figure 11 This is a schematic diagram of the structure of the bell-shaped housing and the 18-tooth gear ring after press-fitting in the utility model.

[0020] Description of reference numerals: 18-tooth ring gear A1 ', 17-tooth ring gear A2 ', bell housing A3 ';

[0021] Tool body 1, gear ring positioning groove 2, limiting protruding teeth 3, bell-shaped housing accommodating cavity 4, 18-tooth gear ring 5, 17-tooth gear ring 6, bell-shaped housing 7. DETAILED DESCRIPTION

[0022] The following is a detailed introduction to the present invention with reference to the accompanying drawings:

[0023] Example: As shown in the attached Figures 7-11 As shown, this gear ring press-fitting error-proofing tool includes a tool body 1, a gear ring positioning groove 2, a limiting protruding tooth 3, a bell-shaped housing accommodating cavity 4, an 18-tooth gear ring 5, a 17-tooth gear ring 6, and a bell-shaped housing 7.

[0024] Reference Attachment Figure 7 、 8 An annular gear ring positioning groove 2 is opened on the upper end surface of the tooling body 1, and the gear ring positioning groove 2 is used to place the gear ring. At the same time, four (or more) limiting protrusions 3 matching the 18-tooth gear ring 5 are provided on the inner wall of the gear ring positioning groove 2.

[0025] like Figure 9 As shown, when the 18-tooth ring gear 5 is inserted into the ring gear positioning groove 2, each limiting protrusion 3 can be embedded in a corresponding tooth groove on the 18-tooth ring gear 5, so that the 18-tooth ring gear 5 can be completely placed in the ring gear positioning groove 2 without interference. Figure 10 As shown, when the 17-tooth ring gear 6 is inserted into the ring gear positioning groove 2, the two upper limiting protrusions 3 can be inserted into the corresponding tooth grooves on the 17-tooth ring gear 6, but the two lower limiting protrusions 3 will interfere with the 17-tooth ring gear 6, making it impossible for the 17-tooth ring gear 6 to be completely placed in the ring gear positioning groove 2, and pressing on the two lower limiting protrusions 3.

[0026] Further, such as Figure 11 As shown, a bell housing accommodating cavity 4 is formed through the bottom of the gear ring positioning groove 2. The bell housing accommodating cavity 4 can accommodate a bell housing 7. During press-fitting, the bell housing 7 is press-fitted with the 18-tooth gear ring 5 by a press.

[0027] This utility model designs a new structure for press-fitting error-proofing tooling for gear rings. The new tooling adds four retaining teeth 3 at the gear ring placement location (i.e., at the gear ring positioning groove 2). During press-fitting, an 18-tooth gear ring 5 and a 17-tooth gear ring 6 are placed into the new tooling. The 18-tooth gear ring 5 can be inserted normally, but the 17-tooth gear ring 6 will interfere with the four retaining teeth 3 in the tooling, preventing it from being inserted into the tooling. This prevents the 17-tooth gear ring from being mixed in. A bell housing 7 is then placed into the bell housing accommodating cavity 4, and the 18-tooth gear ring 5 is pressed into the bell housing 7 using a press.

[0028] It is understandable that for those skilled in the art, any equivalent replacement or change of the technical solution and the concept of the utility model should fall within the scope of protection of the claims attached to the utility model.

Claims

1. A gear ring press-fitting error-proofing tool, characterized by: The tooling body (1) comprises a tooling body (1), wherein the upper end surface of the tooling body (1) is provided with a gear ring positioning groove (2) for inserting the gear ring, and the inner wall of the gear ring positioning groove (2) is provided with a plurality of limiting protruding teeth (3) matching the 18-tooth gear ring (5). When the 18-tooth gear ring (5) is inserted into the gear ring positioning groove (2), each limiting protruding tooth (3) is embedded in the corresponding tooth groove on the 18-tooth gear ring (5), so that the 18-tooth gear ring (5) is completely inserted into the gear ring positioning groove (2); when the 17-tooth gear ring (6) is inserted into the gear ring positioning groove (2), at least one limiting protruding tooth (3) interferes with the 17-tooth gear ring (6), so that the 17-tooth gear ring (6) cannot be completely inserted into the gear ring positioning groove (2).

2. The gear ring press-fitting error-proofing tool according to claim 1, characterized in that: A bell-shaped housing accommodating cavity (4) is formed through the bottom of the gear ring positioning groove (2) for accommodating a bell-shaped housing (7). The bell-shaped housing (7) is press-fitted with the 18-tooth gear ring (5) by a press.

Images