Automatic positioning connecting kit and manufacturing method thereof

Abstract

The invention discloses an automatic positioning connecting suite and a manufacturing method thereof.The automatic positioning connecting suite comprises a first connecting cavity, the interior of the first connecting cavity is in an oval cylinder shape, the first connecting cavity penetrates to the first end of the automatic positioning connecting suite, and an oval chamfer is arranged at the joint of the first connecting cavity and the first end of the automatic positioning connecting suite; the interior of the second connecting cavity is cylindrical, the second connecting cavity penetrates to the second end of the automatic positioning connecting kit, and a positioning groove formed in the radial direction of the second connecting cavity is formed in the bottom of the second connecting cavity; the two ends of the connecting channel are connected to the first connecting cavity and the second connecting cavity respectively. According to the automatic positioning connecting kit, the elliptical first connecting cavity is connected with the elliptical end of the shaft part, synchronous rotation of the automatic positioning connecting kit can be kept when the shaft part rotates, and the positioning groove formed in the second connecting cavity at the other end can also be used for transmitting torque. And the oval chamfer is formed in the end of the first connecting cavity, the shaft part can be guided to enter, assembling is convenient, and the assembling efficiency is improved.

Description

Technical Field

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

[0002] Automobile chassis often need to use couplings or related connection kits to achieve the connection and linkage between shafts, which requires the couplings or connection kits to play a connecting role and also be able to transmit torsional force. In order to prevent the couplings or connection kits from loosening and losing the function of transmitting torsional force when the shaft rotates, the couplings or connection kits are generally provided with a non-circular inner hole, and the shape of the end of the shaft is adapted to the inner hole, and the inner hole is used to transmit torsional force.

[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 twist the shaft parts and manually align them before completing the assembly. This makes positioning difficult and the assembly efficiency is low.

[0004] Moreover, for such parts, the traditional processing method is generally to use milling technology to cut 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 an automatic positioning connection kit, which can automatically adapt to the shaft to be connected during assembly, thereby helping to improve assembly efficiency.

[0006] The present invention also proposes a manufacturing method for manufacturing the above-mentioned automatic positioning connection kit, which can improve the production efficiency of the automatic positioning connection kit and meet the needs of mass production.

[0007] According to the first aspect of the present invention, the automatic positioning connection kit comprises:

[0008] 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;

[0009] A second connecting cavity, the interior of which is cylindrical, the second connecting cavity passes through to the second end of the automatic positioning connecting kit, and a positioning groove is provided at the bottom of the second connecting cavity along the radial direction of the second connecting cavity;

[0010] 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;

[0011] Wherein, 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.

[0012] The automatic positioning connection kit according to the embodiment of the present invention has at least the following beneficial effects: the elliptical first connection cavity is connected to the elliptical end of the shaft part, and the automatic positioning connection kit can maintain synchronous rotation when the shaft part rotates, and the positioning groove is provided in the second connection cavity at the other end, which can also be used to transmit torque. In addition, the end of the first connection cavity is provided with an elliptical chamfer, which can guide the shaft part to enter, facilitate assembly, and improve assembly efficiency.

[0013] 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.

[0014] According to some embodiments of the present invention, there are two positioning grooves, which are symmetrically arranged to intersect the central axis of the first connecting cavity.

[0015] According to some embodiments of the present invention, the positioning groove is specifically a semicircular groove.

[0016] 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.

[0017] According to some embodiments of the present invention, the positioning groove is specifically a semicircular groove.

[0018] According to some embodiments of the present invention, the connecting channel is specifically a cylindrical channel.

[0019] According to some embodiments of the present invention, a projection area of ​​the connecting channel along its axial direction is smaller than a projection area of ​​the first connecting cavity along its axial direction, and smaller than a projection area of ​​the second connecting cavity along its axial direction.

[0020] The manufacturing method according to the second aspect of the present invention is used to manufacture the above-mentioned automatic positioning connection kit, comprising the following steps:

[0021] Using a shearing device to shear a cylindrical blank, and placing the cylindrical blank into a cold heading device;

[0022] Starting the cold heading equipment to form positioning holes at both ends of the cylindrical blank;

[0023] Using a punch to continue cold heading along the positioning hole, a first preformed hole and a second preformed hole are respectively obtained at two ends of the cylindrical blank;

[0024] Using an elliptical cylindrical punch, continue cold heading along the first preformed hole to obtain the first connecting cavity;

[0025] Using a cylindrical punch with a convex rib at the end, continue cold heading along the second preformed hole to obtain the second connecting cavity and the positioning groove;

[0026] Using a punch to continue cold heading along the first connecting cavity or the second connecting cavity to obtain the connecting channel so as to open up the first connecting cavity and the second connecting cavity;

[0027] The elliptical chamfer is formed by cold heading at the end of the first connecting cavity using a die.

[0028] The manufacturing method according to the embodiment of the present invention has at least the following beneficial effects: by using the cold heading process, the milling process is avoided to cut the raw material, thereby reducing the consumption of raw materials, streamlining the process to reduce production costs, and improving production efficiency.

[0029] According to some embodiments of the present invention, a positioning groove extending along the length direction is provided in the first connecting cavity. In 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.

[0030] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0032] Figure 1 A perspective view of an automatic positioning connection kit according to an embodiment of the first aspect of the present invention;

[0033] Figure 2 It is a left side view of the automatic positioning connection kit according to the first embodiment of the present invention;

[0034] Figure 3 A cross-sectional view of an automatic positioning connection kit according to an embodiment of the first aspect of the present invention;

[0035] Figure 4 It is a right side view of the automatic positioning connection kit according to the first embodiment of the present invention;

[0036] 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 part according to the first embodiment of the present invention.

[0037] Reference numerals: 100 - first connecting cavity, 110 - elliptical chamfer, 120 - positioning groove, 200 - second connecting cavity, 210 - positioning groove, 300 - connecting channel. DETAILED DESCRIPTION

[0038] Embodiments of the present invention are described in detail below, examples of which 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 only used to explain the present invention, and cannot be understood as limiting the present invention.

[0039] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and 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, and therefore should not be understood as a limitation on the present invention.

[0040] In the description of the present invention, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0041] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. 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.

[0042] In the description of the present invention, the description with reference to the terms "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 schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0043] Automobile chassis often need to use couplings or related connection kits to achieve the connection and linkage between shafts, which requires the couplings or connection kits to play a connecting role and also be able to transmit torsional force. In order to prevent the couplings or connection kits from loosening and losing the function of transmitting torsional force when the shaft rotates, the couplings or connection kits are generally provided with a non-circular inner hole, and the shape of the end of the shaft is adapted to the inner hole, and the inner hole is used to transmit torsional force.

[0044] 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 twist the shaft parts and manually align them before completing the assembly. This makes positioning difficult and the assembly efficiency is low.

[0045] Moreover, for such parts, the traditional processing method is generally to use milling technology to cut 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.

[0046] In this regard, the present application proposes an automatic positioning connection kit, which uses an elliptical first connection cavity 100 to connect with the elliptical end of the shaft part, and can maintain the synchronous rotation of the automatic positioning connection kit when the shaft part rotates. The second connection cavity 200 at the other end is provided with a positioning groove 210, which can also be used to transmit torque. In addition, an elliptical chamfer 110 is provided at the end of the first connection cavity 100, which can guide the shaft part to enter, facilitate assembly, and improve assembly efficiency.

[0047] Moreover, the present application also proposes a manufacturing method for the above-mentioned automatic positioning connection kit, which avoids the use of milling technology 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.

[0048] Reference Figure 1 , an automatic positioning connection kit in the embodiment of the first aspect of 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 transmits torque as an intermediate connector between the two shaft parts. 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.

[0049] Specifically, refer to Figure 2The interior of the first connection cavity 100 is elliptical cylindrical, and the end of the shaft part connected thereto is also designed to be an elliptical cylindrical structure for insertion. The first connection cavity 100 passes through the first end of the automatic positioning connection kit, and an elliptical chamfer 110 is provided at the junction of the first end of the automatic positioning connection kit and the first connection cavity 100. Therefore, when the assembler inserts the shaft part into the first connection cavity 100, the end of the shaft part contacts the elliptical chamfer 110, and is guided by the elliptical chamfer 110 to gradually align the end of the shaft part with the first connection cavity 100. The elliptical chamfer 110 plays a role in guiding the insertion of the shaft part.

[0050] Furthermore, a positioning slot 120 is provided in the first connection cavity 100. The positioning slot 120 extends along the length direction of the first connection cavity 100, and its end passes through the first end of the automatic positioning connection kit. A rib adapted to the positioning slot 120 is provided on the side of the shaft part connected to the first connection cavity 100, and when the shaft part is inserted into the first connection cavity 100, the rib slides into the positioning slot 120. By providing the positioning slot 120, the connection strength between the first connection cavity 100 and the shaft part is enhanced, and the probability of the two being loosened during torsion is reduced.

[0051] Furthermore, there are two positioning grooves 120 and they are symmetrically arranged to intersect the central axis of the first connecting cavity 100, and the positioning grooves 120 are specifically semicircular grooves, which can reduce the stress concentration effect. It is easy to understand that the positioning grooves 120 can also be set as elliptical grooves, V-shaped grooves, square grooves or dovetail grooves, etc., which will not be repeated here.

[0052] Reference Figure 4 The interior of the second connection cavity 200 is cylindrical and passes through the second end of the automatic positioning connection kit. The bottom of the second connection cavity 200 is provided with a positioning groove 210 along the radial direction of the second connection 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 matches 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 snap into the positioning groove 210 to complete the positioning.

[0053] Furthermore, there are at least two positioning grooves 210, and the positioning grooves 210 are distributed in a circumferential array around the central axis of the second connecting cavity 200, so that the torsional force is shared by two or more positioning grooves 210, thereby reducing the probability of the shaft part rotating in the second connecting cavity 200. In this embodiment, there are two positioning grooves 210 and the angle between the two is 180°, and the end face of the corresponding shaft part is provided with a rib, which can be simultaneously inserted into the two positioning grooves 210.

[0054] Furthermore, the positioning groove 210 is specifically a semicircular groove, and its 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.

[0055] Reference Figure 3 , the 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 are all coincident and located at the center of the automatic positioning connecting kit, ensuring that the center of gravity of the automatic positioning connecting kit is located on the central axis of the body, reducing the vibration during its rotation.

[0056] Furthermore, the connecting channel 300 is specifically a cylindrical channel for easy processing and production. It is easy to understand that it can also be designed as a square tubular structure.

[0057] Furthermore, the projection area of ​​the connecting channel 300 along its axial direction is smaller than the projection area of ​​the first connecting cavity 100 along its axial direction, and smaller than the projection area of ​​the second connecting cavity 200 along its axial direction.

[0058] A manufacturing method for manufacturing the above-mentioned automatic positioning connection kit in an embodiment of the second aspect of the present application comprises the following steps:

[0059] S100. Using a shearing device to shear a cylindrical blank, and placing the cylindrical blank into a cold heading device;

[0060] S200. Start the cold heading equipment to form positioning holes at both ends of the cylindrical blank;

[0061] S300. Use a punch to continue cold heading along the positioning hole to obtain a first preformed hole and a second preformed hole at both ends of the cylindrical blank;

[0062] S400. Using an elliptical cylindrical punch, continue cold heading along the first preformed hole to obtain a first connecting cavity 100;

[0063] S500. Using a cylindrical punch with a convex rib at the end, continue cold heading along the second preformed hole to obtain a second connecting cavity 200 and a positioning groove 210;

[0064] S600. Use a punch to continue cold heading along the first connecting cavity 100 or the second connecting cavity 200 to obtain a connecting channel 300 to open the first connecting cavity 100 and the second connecting cavity 200;

[0065] S700 . Using a mold, cold-forging an elliptical chamfer 110 is formed on the end of the first connecting cavity 100 .

[0066] 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.

[0067] Furthermore, for the first connecting cavity 100 having a positioning groove 120, in the process of cold forging the first connecting cavity 100 along the first preformed hole, a convex rib is provided on the side of the punch used, and the positioning groove 120 is formed simultaneously during the process of forming the first connecting cavity 100.

[0068] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the present invention. In addition, the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

Claims

1. An automatic positioning connection kit, characterized in that: include: 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; A second connecting cavity, the interior of which is cylindrical, the second connecting cavity passes through to the second end of the automatic positioning connecting kit, and a positioning groove is provided at the bottom of the second connecting cavity 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 coincide with each other and are located in the center of the automatic positioning connecting kit.

2. 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 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 automatic positioning connection kit according to claim 2, characterized in that: The positioning groove is specifically a semicircular groove.

5. 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 automatic positioning connection kit according to claim 1, characterized in that: The positioning groove is specifically a semicircular groove.

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

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

9. A method for manufacturing the automatic positioning connection kit according to any one of claims 1 to 8, characterized in that: include: 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 preformed hole and a second preformed hole are respectively obtained at two 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 convex rib at 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 heading along the first connecting cavity or the second connecting cavity to obtain the connecting channel so as to open up the first connecting cavity and the second connecting cavity; The elliptical chamfer is formed by cold heading at the end of the first connecting cavity using a die.

10. The manufacturing method according to claim 9, characterized in that: A positioning groove extending along its length direction is provided in the first connecting cavity. During the process of cold forging 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