Stamping planet carrier cover for speed reducer

Abstract

The utility model provides a stamping planet carrier cover for a speed reducer, which belongs to the technical field of speed reducers, overcomes the technical defects of high casting processing cost and low working efficiency of the conventional speed reducer carrier cover, and comprises a body, and is characterized in that the body is in a disc sheet shape; the center of one side of the disc is provided with a boss which is formed by protruding outwards through stamping and integrally connected with the body, transmission teeth which are in transmission connection with an external transmission shaft are arranged in the boss, the body is further provided with a circular truncated cone which is formed by protruding outwards through stamping from the boss side of the disc to the other side of the disc, and a blind hole is formed in the circular truncated cone. According to the utility model, extrusion processing can be adopted, not only can raw materials be saved, but also the process cost can be effectively reduced, and the strength of the product is improved due to the fact that the circular truncated cones are formed by punching the circular truncated cones which protrude outwards, so that not only is the assembly convenient, but also the strength is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of reducers, and in particular relates to a planetary carrier cover processed by stamping for reducers. Background Art

[0002] The planetary carrier assembly is one of the main components of a planetary gear transmission, and the planetary axles are mounted on it. Typically, the planetary carrier assembly consists of a planetary carrier and a spline cover. The planetary carrier has a planetary carrier axle hole, which is surrounded by planetary carrier rivet grooves. The spline cover has a spline cover axle hole, which is surrounded by spline cover rivet grooves. The spline cover axle hole is coaxial with the planetary carrier axle hole, and the planetary axles are mounted in the spline cover axle hole and the planetary carrier axle hole.

[0003] At present, the qualified rate of finished products of planetary carrier assemblies with this structure is low. During the press-fitting process of the planetary gear shafts, there is always the problem of the planetary gear shafts not being pressed into place, which makes it impossible to assemble the planetary gear shafts normally, resulting in the planetary carrier assembly being unusable and requiring reprocessing. This not only delays the production cycle of the transmission, but also causes serious waste of raw materials and labor costs, reducing the economic benefits of the enterprise.

[0004] In Chinese patent literature, there is an invention patent document with publication number CN115351517B, entitled "Process for Processing a Planetary Carrier Assembly for a Transmission." This invention discloses a process for processing a planetary carrier assembly for a transmission, relating to the field of transmission component processing technology. The process includes a spline cover machining step, a planetary carrier machining step, a welding step, and a planetary carrier assembly machining step. The spline cover machining step includes a sequential process of rough turning the spline cover, spline drawing, heat treatment, fine turning the spline cover, and a spline cover machining center step. The spline cover machining center step first drills the spline cover rivet groove and then the spline cover axle hole. The planetary carrier machining step includes a sequential process of turning the planetary carrier and a planetary carrier machining center step. The planetary carrier axle hole is drilled in the planetary carrier machining center step. The planetary carrier assembly machining step includes a sequential process of turning the planetary carrier assembly and a planetary carrier assembly machining center step. The planetary carrier rivet groove is drilled first, followed by reaming the planetary carrier axle hole and the spline cover axle hole. This invention significantly improves the yield rate of finished planetary carrier assemblies.

[0005] In the above patent documents, the processing procedures are complicated and the cost is high. For the reducers in the washing machine industry, the industry is in serious internal competition. Reducing costs and adopting new processes to form new structures to achieve energy saving and consumption reduction are technical problems that we urgently need to solve. Utility Model Content

[0006] The purpose of the utility model is to provide a planetary carrier cover processed by stamping for a reducer, so as to solve the above technical problems existing in the prior art.

[0007] According to the above purpose, the basic technical solution of the utility model is: a planetary carrier cover for a reducer by stamping, including a main body, characterized in that: the main body is in the shape of a disc, and a boss is provided at the center of one side of the disc, which is formed by stamping and protruding outward to form a boss connected to the main body as a whole, and the boss is provided with a transmission tooth connected to the external transmission shaft. The main body is also provided with a circular table formed by stamping outward from the boss side of the disc to the other side, and a blind hole is provided in the circular table. The main body disc is also provided with connecting frame holes evenly spaced with the blind holes.

[0008] Furthermore, a countersunk hole is formed on the other side of the frustum relative to the main body disc by stamping.

[0009] Furthermore, a through hole is provided in the middle of the countersunk hole.

[0010] More specifically, the through hole and the blind hole are concentrically arranged.

[0011] The planetary carrier cover of the above-mentioned reducer is stamped, and the transmission teeth are splines, and the inner side of the end of the spline away from the body is provided with a chamfer.

[0012] The planet carrier cover of the above-mentioned reducer is stamped, and a rounded corner is provided between the root of the truncated cone and the disc surface of the body.

[0013] Compared with the prior art, the advantages and beneficial effects of this utility model are:

[0014] 1. The main body of the product of the utility model is in the shape of a disc, and a boss is provided at the center of one side of the disc, which is protruded outward by stamping to form an integral part of the main body. The use of extrusion processing can avoid the shortcomings of large investment in casting molds, slow work efficiency and high cost, which can not only save raw materials but also effectively reduce process costs;

[0015] 2. The product body of the utility model is also provided with a truncated cone, which is formed by stamping outward from the boss side of the disc to the other side. A blind hole is provided in the truncated cone. The formation of the truncated cone improves the strength of the product and reduces the thickness of the disc body. The ductility of the material is fully utilized to form a blind hole that can shorten the installation length of the needle roller, thus saving the cost of related parts.

[0016] 3. The product of this utility model is provided with chamfers and rounded corners, which not only facilitates assembly but also improves strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the product of the utility model;

[0018] Figure 2 This is a front view structural diagram of the utility model product;

[0019] Figure 3 This is a schematic diagram of the top view of the structure of the utility model product;

[0020] Figure 4 for Figure 2 AA cross-sectional structural diagram;

[0021] In the figure: 1. Main body; 2. Boss; 3. Transmission gear; 4. Cone; 5. Blind hole; 6. Connecting frame hole; 7. Countersunk hole; 8. Through hole; 9. Chamfer; 10. Fillet. DETAILED DESCRIPTION

[0022] Combine Figures 1 to 4 , which is a schematic diagram of the principle structure of an embodiment of a planetary carrier cover for a reducer by stamping according to the present invention. The planetary carrier cover for a reducer by stamping comprises a body 1, the body 1 being in the shape of a disc, a boss 2 being provided at the center of one side of the disc to be formed by protruding outward by stamping and being integrally connected to the body 1, the boss 2 being provided with a transmission tooth 3 connected to the external transmission shaft, the body 1 is further provided with a circular table 4 formed by stamping outward from the boss 2 side of the disc to the other side, the circular table 4 is provided with a countersunk hole 7 formed by stamping relative to the other side of the disc of the body 1, a through hole 8 is provided in the middle of the countersunk hole 7, a blind hole 5 is provided in the circular table 4, and the through hole 8 is concentrically arranged with the blind hole 5, the disc of the body 1 is further provided with a connecting frame hole 6 uniformly spaced from the blind hole 5, the transmission tooth 3 is a spline, and the inner side of the end of the spline 3 away from the body 1 is provided with a chamfer 9, and a fillet 10 is provided between the root of the circular table 4 and the disc surface of the body 1.

[0023] During processing, a disc-shaped sheet is formed by blanking a thin-walled plate, and then a boss 2 protruding to one side in the middle is formed by stamping. The extrusion process can be divided into two or more steps. The first step is to extrude a boss that is larger and shorter than the outer diameter of the boss 2, and a through hole larger than the diameter of the spline hole 3 is provided in the middle. Then, the boss 2, the spline hole 3 in the middle, and the fillet 10 between the boss 2 and the body 1 are formed by shrinking and stretching. Then, four round corners are punched out on the disc of the body 1 by punching. The through holes 8 are evenly distributed around the body 1, and then countersunk holes 7 and frustum 4 are formed by stamping around the through holes 8, and then blind holes 5 are punched out in the opposite direction; then four connecting frame holes 6 are evenly distributed on the disc of the body 1 at equal intervals with the blind holes 5; finally, the splines 3, the connecting frame holes 6 and the chamfers 9 of the inner openings of the blind holes 5 are formed by machining. The processing of the chamfers 9 not only facilitates the insertion of external parts, but also helps to form a cone when the connecting frame holes 6 and the external connecting frame are riveted, which is conducive to the connection of the two as a whole.

[0024] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

[0025] Although this document frequently uses the following terms: 1. body; 2. boss; 3. transmission tooth; 4. cone; 5. blind hole; 6. connecting frame hole; 7. countersunk hole; 8. through hole; 9. chamfer; 10. fillet, the use of other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations is contrary to the spirit of the present invention.

[0026] The above is an introduction to the planetary carrier cover for the reducer provided by the present invention, which is stamped and processed. In this introduction, the principles and implementation methods of the present invention are explained using specific preferred embodiments. These embodiments are only used to help understand the principles and core ideas of the present invention. It should be pointed out that for ordinary technicians in this field, without departing from the design ideas of the present invention, the implementation plans in the above embodiments can be further combined or replaced, and the present invention can be improved and modified in several ways. These improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A planetary carrier cover for a speed reducer, comprising a main body (1), characterized in that: The body (1) is in the shape of a disc, and a boss (2) is provided at the center of one side of the disc and is integrally connected to the body (1) by protruding outwards by stamping. The boss (2) is provided with a transmission tooth (3) connected to an external transmission shaft. The body (1) is also provided with a circular table (4) formed by stamping outwards from the boss (2) side of the disc to the other side, and a blind hole (5) is provided in the circular table (4). The disc of the body (1) is also provided with a connecting frame hole (6) that is evenly spaced from the blind hole (5).

2. The planetary carrier cover for a speed reducer according to claim 1, characterized in that: The other side of the circular table (4) relative to the main body (1) is formed with a countersunk hole (7) by stamping.

3. The planetary carrier cover for a speed reducer according to claim 2, characterized in that: A through hole (8) is provided in the middle of the countersunk hole (7).

4. The planet carrier cover for a speed reducer according to claim 3, characterized in that: The through hole (8) and the blind hole (5) are arranged concentrically.

5. The planet carrier cover for a speed reducer processed by stamping according to any one of claims 1 to 4, characterized in that: The transmission teeth (3) are splines, and a chamfer (9) is provided on the inner side of the end of the spline away from the body (1).

6. The planet carrier cover for a speed reducer processed by stamping according to any one of claims 1 to 4, characterized in that: A rounded corner (10) is provided between the root of the truncated cone (4) and the disc surface of the body (1).

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