A method for manufacturing an automatic positioning connection kit

Abstract

The present invention discloses a method for manufacturing an automatic positioning connection kit. The automatic positioning connection kit includes a first connection cavity having an elliptical cylindrical interior, extending to the first end of the automatic positioning connection kit and having an elliptical chamfer at the junction of the first and second connection cavities; a second connection cavity having a cylindrical interior, extending to the second end of the automatic positioning connection kit, and a radially extending positioning groove defined at the bottom of the second connection cavity; and a connecting channel, the two ends of which are respectively connected to the first and second connection cavities. By utilizing a cold heading process, the present invention avoids the need for milling to cut raw materials, thereby reducing raw material consumption, streamlining the process to lower production costs, and improving production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of automobile chassis connection kits, and in particular to a manufacturing method of an automatic positioning connection kit. Background Art

[0002] Automotive chassis often require couplings or related connection kits to connect and interlock shafts. These couplings or connection kits must not only provide a connection but also transmit torsional forces. To prevent the couplings or connection kits from loosening during shaft rotation and losing their torsional transmission capabilities, they typically feature a non-circular inner hole, into which the shaft ends are shaped to fit, thereby transmitting torsional forces.

[0003] However, during the actual assembly process, since the inner hole is a non-circular hole, there are requirements for the posture of the shaft during installation. The assembly workers also need to manually align the shaft parts before completing the assembly, which makes positioning difficult and the assembly efficiency is low.

[0004] Furthermore, for such parts, the traditional processing method is generally to use milling technology to remove the raw materials and obtain the parts by cutting. However, this process consumes too much raw materials and the milling process is slow, which cannot meet the requirements of mass production. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a method for manufacturing an automatic positioning connection kit, which can improve the production efficiency of the automatic positioning connection kit and meet the needs of mass production.

[0006] According to a method for manufacturing an automatic positioning connection kit according to an embodiment of the present invention, the automatic positioning connection kit includes:

[0007] A first connecting cavity, the interior of which is in an elliptical cylindrical shape, the first connecting cavity passes through to the first end of the automatic positioning connecting kit, and an elliptical chamfer is provided at the junction of the first end of the automatic positioning connecting kit and the first connecting cavity;

[0008] The second connecting cavity has a cylindrical interior, the second connecting cavity extends to the second end of the automatic positioning connecting kit, and the bottom of the second connecting cavity is provided with a positioning groove opened along the radial direction of the second connecting cavity;

[0009] a connecting channel, a first end of which is connected to the first connecting cavity, and a second end of which is connected to the bottom of the second connecting cavity;

[0010] The central axes of the first connecting cavity, the second connecting cavity and the connecting channel coincide with each other and are located in the center of the automatic positioning connecting kit.

[0011] The method for manufacturing the automatic positioning connection kit comprises the following steps:

[0012] Using a shearing device to shear a cylindrical blank, and placing the cylindrical blank into a cold heading device;

[0013] Starting the cold heading equipment to form positioning holes at both ends of the cylindrical blank;

[0014] Using a punch to continue cold heading along the positioning hole, a first pre-formed hole and a second pre-formed hole are respectively obtained at both ends of the cylindrical blank;

[0015] Using an elliptical cylindrical punch, continue cold heading along the first preformed hole to obtain the first connecting cavity;

[0016] Using a cylindrical punch with a rib on the end, continue cold heading along the second preformed hole to obtain the second connecting cavity and the positioning groove;

[0017] Using a punch to continue cold forging along the first connecting cavity or the second connecting cavity to obtain the connecting channel so as to connect the first connecting cavity and the second connecting cavity;

[0018] The elliptical chamfer is formed by cold heading the end portion of the first connecting cavity using a die.

[0019] The manufacturing method of the automatic positioning connection kit according to an embodiment of the present invention has at least the following beneficial effects: by utilizing an elliptical first connection cavity to connect with the elliptical end of the shaft part, the automatic positioning connection kit can maintain synchronous rotation when the shaft part rotates, and the second connection cavity at the other end is provided with a positioning groove that can also be used to transmit torque. In addition, the end of the first connection cavity is provided with an elliptical chamfer to guide the shaft part into, facilitate assembly, and improve assembly efficiency. By using a cold heading process, the use of a milling process to cut the raw material is avoided, thereby reducing the consumption of raw materials, streamlining the process to reduce production costs, and improving production efficiency.

[0020] According to some embodiments of the present invention, a positioning slot is provided in the first connecting cavity, the positioning slot extends along the length direction of the first connecting cavity, and an end of the positioning slot passes through to the first end of the automatic positioning connecting kit.

[0021] According to some embodiments of the present invention, there are two positioning slots, which are symmetrically arranged to intersect the central axis of the first connecting cavity.

[0022] According to some embodiments of the present invention, the positioning groove is specifically a semicircular groove.

[0023] According to some embodiments of the present invention, there are at least two positioning grooves, and the positioning grooves are distributed in a circular array around the central axis of the second connecting cavity.

[0024] According to some embodiments of the present invention, the positioning groove is specifically a semicircular groove.

[0025] According to some embodiments of the present invention, the connecting channel is specifically a cylindrical channel.

[0026] According to some embodiments of the present invention, a projected area of ​​the connecting channel along its axial direction is smaller than a projected area of ​​the first connecting cavity along its axial direction, and smaller than a projected area of ​​the second connecting cavity along its axial direction.

[0027] According to some embodiments of the present invention, a positioning groove extending along the length direction is provided in the first connecting cavity. During the process of cold heading the first connecting cavity along the first preformed hole, a convex rib is provided on the side of the punch used, and the positioning groove is formed in the process of forming the first connecting cavity.

[0028] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0030] Figure 1 A perspective view of an automatic positioning connection kit according to an embodiment of the present invention;

[0031] Figure 2 This is a left side view of the automatic positioning connection kit according to an embodiment of the present invention;

[0032] Figure 3 A cross-sectional view of an automatic positioning connection kit according to an embodiment of the present invention;

[0033] Figure 4 This is a right side view of the automatic positioning connection kit according to an embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram of the connection between the second connection cavity 200 of the automatic positioning connection kit and the external shaft component according to an embodiment of the present invention.

[0035] Reference numerals: 100 - first connecting cavity, 110 - elliptical chamfer, 120 - positioning groove, 200 - second connecting cavity, 210 - positioning groove, 300 - connecting channel. DETAILED DESCRIPTION

[0036] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0037] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0038] In the description of the present invention, "several" means more than one, "plurality" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0039] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0040] In the description of the present invention, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the exemplary expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0041] Automotive chassis often require couplings or related connection kits to connect and interlock shafts. These couplings or connection kits must not only provide a connection but also transmit torsional forces. To prevent the couplings or connection kits from loosening during shaft rotation and losing their torsional transmission capabilities, they typically feature a non-circular inner hole, into which the shaft ends are shaped to fit, thereby transmitting torsional forces.

[0042] However, during the actual assembly process, since the inner hole is a non-circular hole, there are requirements for the posture of the shaft during installation. The assembly workers also need to manually align the shaft parts before completing the assembly, which makes positioning difficult and the assembly efficiency is low.

[0043] Furthermore, for such parts, the traditional processing method is generally to use milling technology to remove the raw materials and obtain the parts by cutting. However, this process consumes too much raw materials and the milling process is slow, which cannot meet the requirements of mass production.

[0044] To address this issue, the present application proposes an automatic positioning connection kit. This kit utilizes an elliptical first connection cavity 100 to connect with the elliptical end of a shaft component, ensuring synchronous rotation of the assembly as the shaft component rotates. A second connection cavity 200 at the other end, equipped with a positioning groove 210, also facilitates torque transmission. Furthermore, an elliptical chamfer 110 is provided at the end of the first connection cavity 100 to guide the shaft component into position, facilitating assembly and improving efficiency.

[0045] Moreover, the present application also proposes a manufacturing method for the above-mentioned automatic positioning connection kit, which avoids the use of milling process to cut the raw materials by using cold heading processing technology, thereby reducing the consumption of raw materials, streamlining the process to reduce production costs, and improving production efficiency.

[0046] Reference Figure 1 The automatic positioning connection kit in the present application includes a first connection cavity 100, a second connection cavity 200 and a connection channel 300. The first connection cavity 100 and the second connection cavity 200 are respectively arranged at both ends of the automatic positioning connection kit, and are respectively used to connect with external shaft parts. Thus, the automatic positioning connection kit acts as an intermediate connector between the two shaft parts to transmit torque. The connection channel 300 is arranged in the middle of the automatic positioning connection kit and serves to connect the first connection cavity 100 and the second connection cavity 200, which can reduce the weight of the automatic positioning connection kit and at the same time discharge the gas in the cavity when the shaft part is inserted, thereby reducing the pressure in the cavity.

[0047] Specifically, refer to Figure 2 The interior of the first connecting cavity 100 is elliptical and cylindrical, and the end of the shaft component connected thereto is also designed with an elliptical cylindrical structure for insertion. The first connecting cavity 100 extends through the first end of the automatic positioning connecting kit, and an elliptical chamfer 110 is provided at the junction of the first end of the automatic positioning connecting kit and the first connecting cavity 100. Therefore, when the assembler inserts the shaft component into the first connecting cavity 100, the end of the shaft component contacts the elliptical chamfer 110, which guides the end of the shaft component to gradually align with the first connecting cavity 100. The elliptical chamfer 110 serves to guide the insertion of the shaft component.

[0048] Furthermore, a positioning slot 120 is provided within the first connecting cavity 100. The positioning slot 120 extends along the length of the first connecting cavity 100, with its end extending through the first end of the automatic positioning connection kit. Ribs that mate with the positioning slot 120 are provided on the side of the shaft component connected to the first connecting cavity 100. When the shaft component is inserted into the first connecting cavity 100, the ribs slide into the positioning slot 120. The provision of the positioning slot 120 strengthens the connection between the first connecting cavity 100 and the shaft component, reducing the chance of the two becoming loose during twisting.

[0049] Furthermore, there are two positioning grooves 120, which are symmetrically arranged about the central axis of the first connecting cavity 100. Furthermore, the positioning grooves 120 are specifically semicircular grooves, which can reduce stress concentration effects. It is easy to understand that the positioning grooves 120 can also be configured as elliptical grooves, V-shaped grooves, square grooves, or dovetail grooves, and the details are not repeated here.

[0050] Reference Figure 4 The interior of the second connecting cavity 200 is cylindrical and extends to the second end of the automatic positioning connecting kit. The bottom of the second connecting cavity 200 is provided with a positioning groove 210 along the radial direction of the second connecting cavity 200. Figure 5 The end of the shaft part connected to the second connecting cavity 200 is correspondingly designed as a cylindrical structure for insertion, and a rib that is adapted to the shape of the positioning groove 210 is provided on the end face of the shaft part, so that when the shaft part is inserted into the second connecting cavity 200, rotating the shaft part can make the rib fit into the positioning groove 210 to complete the positioning.

[0051] Furthermore, there are at least two positioning grooves 210, distributed in a circular array around the central axis of the second connecting cavity 200. This allows two or more positioning grooves 210 to share the torsional force, reducing the probability of the shaft component rotating within the second connecting cavity 200. In this embodiment, there are two positioning grooves 210, with an angle of 180° between them. A rib is provided on the end surface of the corresponding shaft component, which can be simultaneously engaged with both positioning grooves 210.

[0052] Furthermore, the positioning groove 210 is specifically a semicircular groove, whose radius is 1 / 10 of the inner diameter of the second connecting cavity 200, which can reduce the stress concentration effect. It is easy to understand that the positioning groove 210 can also be set as an elliptical groove, a V-shaped groove or a square groove, etc., which will not be repeated here.

[0053] Reference Figure 3The first end of the connecting channel 300 is connected to the first connecting cavity 100, and the second end of the connecting channel 300 is connected to the bottom of the second connecting cavity 200. The central axes of the first connecting cavity 100, the second connecting cavity 200, and the connecting channel 300 all coincide and are located in the center of the automatic positioning connection kit, ensuring that the center of gravity of the automatic positioning connection kit is located on the central axis, reducing vibration during its rotation.

[0054] Furthermore, the connecting channel 300 is specifically a cylindrical channel for ease of processing and production. It is easy to understand that it can also be designed as a square tubular structure.

[0055] Furthermore, the projected area of ​​the connecting channel 300 along its axial direction is smaller than the projected area of ​​the first connecting cavity 100 along its axial direction, and is also smaller than the projected area of ​​the second connecting cavity 200 along its axial direction.

[0056] The manufacturing method for manufacturing the above-mentioned automatic positioning connection kit in this application comprises the following steps:

[0057] S100. Using a shearing device to shear a cylindrical blank, and placing the cylindrical blank into a cold heading device;

[0058] S200 starts the cold heading equipment to form positioning holes at both ends of the cylindrical blank;

[0059] S300 using a punch to continue cold heading along the positioning hole, respectively, at both ends of the cylindrical blank to obtain a first pre-formed hole and a second pre-formed hole;

[0060] S400 using an elliptical cylindrical punch, continue cold heading along the first preformed hole to obtain a first connecting cavity 100;

[0061] S500 using a cylindrical punch with a rib at the end, continue cold heading along the second preformed hole to obtain a second connecting cavity 200 and a positioning groove 210;

[0062] S600 using a punch along the first connecting cavity 100 or the second connecting cavity 200 to continue cold heading, obtain a connecting channel 300 to open the first connecting cavity 100 and the second connecting cavity 200;

[0063] S700 . Use a mold to cold-forge an elliptical chamfer 110 on the end of the first connecting cavity 100 .

[0064] Specifically, the raw material of the cylindrical blank is coiled wire, and the material used is 10B21 material, including but not limited to low carbon steel, copper, aluminum and other components.

[0065] Furthermore, for the first connecting cavity 100 provided with a positioning groove 120, in the process of cold forging the first connecting cavity 100 along the first pre-formed hole, a convex rib is provided on the side of the punch used, and the positioning groove 120 is formed in the process of forming the first connecting cavity 100.

[0066] While the embodiments of the present invention have been described in detail above with reference to the accompanying drawings, the present invention is not limited to the embodiments described above. Various modifications may be made within the scope of knowledge possessed by a person skilled in the art without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof may be combined with one another unless there is a conflict.

Claims

1. A method for manufacturing an automatic positioning connection kit, characterized in that: The automatic positioning connection kit includes: A first connecting cavity, the interior of which is in an elliptical cylindrical shape, the first connecting cavity passes through to the first end of the automatic positioning connecting kit, and an elliptical chamfer is provided at the junction of the first end of the automatic positioning connecting kit and the first connecting cavity; The second connecting cavity has a cylindrical interior, the second connecting cavity extends to the second end of the automatic positioning connecting kit, and the bottom of the second connecting cavity is provided with a positioning groove opened along the radial direction of the second connecting cavity; a connecting channel, a first end of which is connected to the first connecting cavity, and a second end of which is connected to the bottom of the second connecting cavity; Wherein, the central axes of the first connecting cavity, the second connecting cavity and the connecting channel all coincide and are located in the center of the automatic positioning connecting kit; The manufacturing method of the automatic positioning connection kit comprises: Using a shearing device to shear a cylindrical blank, and placing the cylindrical blank into a cold heading device; Starting the cold heading equipment to form positioning holes at both ends of the cylindrical blank; Using a punch to continue cold heading along the positioning hole, a first pre-formed hole and a second pre-formed hole are respectively obtained at both ends of the cylindrical blank; Using an elliptical cylindrical punch, continue cold heading along the first preformed hole to obtain the first connecting cavity; Using a cylindrical punch with a rib on the end, continue cold heading along the second preformed hole to obtain the second connecting cavity and the positioning groove; Using a punch to continue cold forging along the first connecting cavity or the second connecting cavity to obtain the connecting channel so as to connect the first connecting cavity and the second connecting cavity; The elliptical chamfer is formed by cold heading the end portion of the first connecting cavity using a die.

2. The method for manufacturing the automatic positioning connection kit according to claim 1, characterized in that: A positioning slot is provided in the first connecting cavity. The positioning slot extends along the length direction of the first connecting cavity. An end of the positioning slot passes through the first end of the automatic positioning connecting kit.

3. The method for manufacturing the automatic positioning connection kit according to claim 2, characterized in that: There are two positioning slots, which are symmetrically arranged to intersect the central axis of the first connecting cavity.

4. The method for manufacturing the automatic positioning connection kit according to claim 2, wherein: The positioning groove is specifically a semicircular groove.

5. The method for manufacturing the automatic positioning connection kit according to claim 1, characterized in that: There are at least two positioning grooves, and the positioning grooves are distributed in a circular array around the central axis of the second connecting cavity.

6. The method for manufacturing the automatic positioning connection kit according to claim 1, characterized in that: The positioning groove is specifically a semicircular groove.

7. The method for manufacturing the automatic positioning connection kit according to claim 1, characterized in that: The connecting channel is specifically a cylindrical channel.

8. The method for manufacturing the automatic positioning connection kit according to claim 1, characterized in that: The projected area of ​​the connecting channel along its axial direction is smaller than the projected area of ​​the first connecting cavity along its axial direction, and is also smaller than the projected area of ​​the second connecting cavity along its axial direction.

9. The method for manufacturing the automatic positioning connection kit according to claim 1, characterized in that: A positioning groove extending along the length direction is provided in the first connecting cavity. During the process of cold heading the first connecting cavity along the first preformed hole, a convex rib is provided on the side of the punch used, and the positioning groove is formed in the process of forming the first connecting cavity.

Images