A semi-rigid coaxial cable turning auxiliary tooling and cable end face machining method

Abstract

This invention relates to the field of cable end-face processing technology, specifically disclosing an auxiliary fixture and method for machining the end face of a semi-rigid coaxial cable. The auxiliary fixture, used in conjunction with a lathe, includes a fixture connected to the lathe, a cover plate mounted on the fixture and forming a clamping cavity between the cover plate and the fixture, and fasteners. The method for machining the cable end face includes the following steps: Step S1: Place the bent cable into the cable fixture, install the cover plate, and secure it with fasteners; wherein the end of the cable at the machining end-face exit will pass through the machining end-face exit; Step S2: Install the auxiliary fixture; clamp the cable using the lathe chuck; Step S3: Machining the cable end face; Step S4: Machining completed, remove the auxiliary fixture, remove the cover plate, and take out the cable. This invention can effectively clamp and fix the bent cable, thereby effectively machining the cable end face and improving machining accuracy.

Description

Technical Field

[0001] This invention relates to the field of cable end face processing technology, and more specifically, to an auxiliary tooling for turning semi-rigid coaxial cables and a method for processing cable end faces. Background Technology

[0002] Semi-rigid coaxial cables are suitable for internal and external connections in various electronic devices. To achieve transmission functionality, the cable needs to be shaped with bends, and the end face needs to have steps or conical surfaces. This requires bending and processing of the semi-rigid coaxial cable. If the cable is processed before bending, the cable shell and insulation will deform and shift, resulting in the cable's dimensional accuracy not meeting usage requirements. Therefore, this type of cable is generally bent first and then processed. Because semi-rigid coaxial cables have a rotating structure, the cable shell, insulation, and inner conductor are usually machined by turning. However, turning after bending makes clamping difficult.

[0003] Currently, tooling or devices for processing the end faces of semi-rigid coaxial cables are mainly used for single-piece cable processing. For example, Chinese patent CN110328454A describes a semi-rigid cable end face processing device. This device automatically controls the smooth operation of its components to complete the processing of semi-rigid cables to the set specifications and dimensions. Multiple cable specifications can be pre-programmed for processing. However, this device is only suitable for cables with neat end faces and not for semi-rigid cables with stepped or conical end faces. After bending, processing the end faces of semi-rigid cables with stepped or conical end faces is more difficult, thus limiting the application of this type of cable. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an auxiliary tooling for turning semi-rigid coaxial cables and a method for processing cable end faces, which can effectively clamp and fix the bent cable to prevent deformation, thereby effectively realizing the processing of the cable end faces;

[0005] The solution adopted by this invention to solve the technical problem is:

[0006] A semi-rigid coaxial cable turning auxiliary tooling, used in conjunction with a lathe, includes a fixture connected to the lathe chuck, a cover plate mounted on the fixture and forming a clamping cavity between the cover plate and the fixture, and fasteners for fixing the cover plate and the fixture; one end face of the clamping cavity is coaxially arranged with the lathe chuck.

[0007] When clamping the cable, install the cable in the clamping cavity, then install the cover plate and fix the cover plate to the jig with fasteners; during the cable installation process, one end of the cable will pass through the end face of the clamping cavity that is coaxially set with the lathe chuck.

[0008] For cable end face machining, the fixture is connected to the lathe chuck. During machining, the lathe chuck drives the fixture to rotate. The end face to be machined is coaxially set with the lathe chuck, so as to achieve effective machining of the end face.

[0009] In some possible implementations, in order to effectively achieve the fixed clamping of the cable;

[0010] The clamping cavity includes a relief groove one disposed on the jig and with the same bending angle as the cable, and a relief groove two disposed on the cover plate and corresponding to the relief groove one; the two ends of the relief groove one penetrate the jig.

[0011] In some possible implementations,

[0012] The first and second relief grooves have the same structure, with a depth of H and a diameter of D, where H = D / 2; the diameter is equal to the outer diameter of the cable.

[0013] In some possible implementations, in order to effectively achieve connection with the lathe chuck and make the machined end face of the cable coaxial with the rotation axis of the chuck;

[0014] The fixture includes a body with a clearance groove and a chuck mounted on the body and connected to a lathe.

[0015] In some possible implementations, in order to effectively achieve the processing of the cable end face;

[0016] The clearance groove includes a machining end face outlet disposed on the end face of the fixture away from the chuck, a transition section connected to the machining end face outlet and coaxially disposed with the chuck, a support section connected to the other end of the transition section, and a fixed end face outlet connected to the end of the support section away from the transition section.

[0017] Wherein, the center of the machining end face outlet is on the same straight line as the axis of the chuck, and the plane of the surface where the machining end face outlet is located is perpendicular to the axis of the chuck.

[0018] In some possible implementations, the end faces of both ends of the bent cable can be processed;

[0019] The support section includes section one and section two; the fixed end face outlet includes outlet one connected to section one and outlet two connected to section two; outlet one and outlet two are arranged on two symmetrical sides of the body along the clamp.

[0020] In some possible implementations, in order to effectively ensure that the cable can be smoothly inserted into the clamping cavity;

[0021] The tolerance of the diameter of the first or second relief groove is 0.1mm to 0.2mm, and the tolerance of the depth of the first or second relief groove is -0.15mm to -0.1mm.

[0022] In some possible implementations, in order to effectively secure the cable;

[0023] The fixture is provided with threaded holes, and the cover plate is provided with through holes that correspond to the threaded holes; the fastener is a screw.

[0024] In some possible implementations, the threaded holes are in multiple sets and arranged along the axial direction of the relief groove, with the multiple sets of threaded holes located on both sides of the relief groove along its axial direction.

[0025] A method for machining cable end faces based on the above-described auxiliary tooling for turning semi-rigid coaxial cables specifically includes the following steps:

[0026] Step S1: Place the bent cable into the cable jig, install the cover plate, and secure it with fasteners; the end of the cable located at the processing end face outlet will pass through the processing end face outlet.

[0027] Step S2: Install auxiliary tooling; use the lathe chuck to clamp the collet;

[0028] Step S3: Cable end face processing;

[0029] Step S4: After processing is complete, remove the auxiliary tooling, remove the cover plate, and take out the cable.

[0030] In some possible implementations,

[0031] Step S3 specifically includes the following steps:

[0032] Step S31: The lathe controls the chuck to rotate around the axis of the chuck, and the cable is machined on the end face of the machining end face exit side until it reaches the end face of the fixture;

[0033] Step S32: Remove the cable and clamp the cable head;

[0034] Step S33: Repeat step S31.

[0035] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0036] This invention provides a relief groove 1 and a relief groove 2 that work together, and sets a transition section for relief groove 1 or relief groove 1 respectively, so that the transition section is consistent with the angle of the cable after bending. This will effectively achieve the clamping and fixing of the bent cable.

[0037] By coaxially aligning the processing end face outlet with the clamp, this invention effectively ensures the accuracy of cable end face processing and prevents damage to the inner conductor of the cable.

[0038] This invention improves the clamping ability of the cover plate and fixture for bent cables by setting threaded holes on both sides of the relief groove along its axial direction. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the structure of the present invention;

[0040] Figure 2 This is a schematic diagram of the structure of the fixture and the relief groove in this invention;

[0041] Figure 3 for Figure 1 Top view;

[0042] Figure 4 This is a schematic diagram of the cable structure after bending.

[0043] The components are: 1. jig; 11. body; 111. relief groove one; 1110. processing end face outlet; 1111. transition section; 1112. section one; 1113. section two; 1114. outlet one; 1115. outlet two; 12. clamp; 2. cover plate; 3. fastener; 4. cable. Detailed Implementation

[0044] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, "a" or "one," etc., do not indicate a quantity limitation, but rather indicate the existence of at least one. In the implementation of this application, "and / or" describes the association relationship of related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more. For example, multiple positioning posts refer to two or more positioning posts. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0045] The present invention will now be described in detail.

[0046] like Figures 1-3 As shown:

[0047] A semi-rigid coaxial cable turning auxiliary tooling, used in conjunction with a lathe, includes a fixture 1 connected to the lathe chuck, a cover plate 2 mounted on the fixture 1 and forming a clamping cavity between the cover plate 2 and the fixture 1, and fasteners 3 for fixing the cover plate 2 and the fixture 1; one end face of the clamping cavity is coaxially arranged with the lathe chuck.

[0048] When clamping cable 4, cable 4 is installed in the clamping cavity, and then cover plate 2 is installed. Fasteners 3 are used to fix cover plate 2 to fixture 1. During the installation of cable 4, one end of cable 4 will pass through the end face of the clamping cavity that is coaxially set with the lathe chuck.

[0049] For cable 4 processing, the fixture 1 is connected to the lathe chuck. During processing, the lathe chuck drives the fixture 1 to rotate. The end face to be processed is coaxially set with the lathe chuck, so as to achieve effective processing of the end face.

[0050] In some possible implementations, in order to effectively achieve the fixed clamping of cable 4;

[0051] like Figure 2 As shown, the clamping cavity includes a relief groove 111 disposed on the fixture 1 and with the same bending angle as the cable 4, and a relief groove 2 disposed on the side of the cover plate 2 near the fixture 1 and corresponding to the relief groove 111; both ends of the relief groove 111 penetrate the fixture 1.

[0052] The first relief groove 111 and the second relief groove cooperate to form a clamping cavity, thereby fixing the bent cable 4.

[0053] The two ends of the relief groove 111 pass through the jig 1, thereby avoiding damage to the end of the cable 4 caused by the formed clamping cavity.

[0054] In some possible implementations,

[0055] The first relief groove 111 has the same structure as the second relief groove, with a depth of H and a diameter of D, where H = D / 2; the diameter is equal to the outer diameter of the cable 4.

[0056] In some possible implementations, in order to effectively achieve connection with the lathe chuck and make the machining end face of the cable 4 coaxial with the rotation axis of the chuck;

[0057] The fixture 1 includes a body 11 with a relief groove 111, and a chuck 12 mounted on the body 11 and connected to the lathe chuck.

[0058] The lathe chuck will hold the collet 12, and during machining, it will drive the collet 12 to rotate around its axis, cooperating with the cutting tool on the lathe to achieve machining of the four ends of the cable;

[0059] In some possible implementations, in order to effectively achieve the processing of the four ends of the cable;

[0060] like Figure 3 As shown, the clearance groove 111 includes a machining end face outlet 1110 disposed on the end face of the fixture 1 away from the chuck 12, a transition section 1111 connected to the machining end face outlet 1110 and coaxially disposed with the chuck, a support section connected to the other end of the transition section 1111, and a fixed end face outlet connected to the end of the support section away from the transition section 1111.

[0061] Wherein, the center of the processing end face outlet 1110 is on the same straight line as the axis of the chuck 12, and the plane of the surface where the processing end face outlet 1110 is located is perpendicular to the axis of the chuck 12.

[0062] The axis of the transition section 1111 is also on the same straight line as the center of the processing end face outlet 1110.

[0063] When installing the cable 4 after bending, one end of the cable 4 will extend out of the processing end face outlet 1110, leaving a certain processing allowance. The processing allowance is set according to the subsequent processing amount. Since this end face of the cable 4 is located on one side of the processing end face outlet 1110, the center of the processing end face outlet 1110 is on the same straight line as the axis of the clamp 12, and the plane of the surface where the processing end face outlet 1110 is located is perpendicular to the axis of the clamp 12. This will greatly ensure the processing accuracy.

[0064] In some possible implementations, the end faces of both ends of the bent cable can be processed;

[0065] like Figure 4 As shown, the bent cable 4 will form two segments, which are generally not equal in length. For example, the outer conductor of one segment has a length of L1, and the outer conductor of the other segment has a length of L2.

[0066] When processing the end faces of both ends of the bent cable 4, the processing should be carried out according to the processing requirements, while ensuring effective clamping and fixing of the bent cable 4.

[0067] The support segment includes segment one 1112 and segment two 1113; the fixed end face outlet includes outlet one 1114 coaxially connected with segment one 1112 and outlet two 1115 coaxially connected with segment two 1113; outlet one 1114 and outlet two 1115 are arranged on two symmetrical sides of the body 11 along the clamp 12.

[0068] The transition section 1111 is smoothly connected to section 1112 and to section 2 1113, and the angles formed by them are equal and are respectively adapted to the angles formed by the bent cable 4.

[0069] When the lengths of the two sections of the bent cable 4 are generally not equal, such as when the length of the outer conductor of one section is L1 and the length of the outer conductor of the other section is L2, the distance between the plane where the outlet 1114 and the processing end face outlet 1110 are located is L1, and the distance between the plane where the outlet 2 1115 and the processing end face outlet 1110 are located is L2, thus satisfying the requirement that the bent cable 4 be fixed in the clamping cavity for processing of both end faces;

[0070] Furthermore, when the straight sections are grouped together, they are coaxially arranged with the transition section 1111, which is suitable for processing the end faces of non-bending cables.

[0071] In some possible implementations, in order to effectively ensure that cable 4 can be smoothly inserted into the clamping cavity;

[0072] The diameter tolerance of the first relief groove 111 or the second relief groove is 0.1mm to 0.2mm, and the depth tolerance of the first relief groove 111 or the second relief groove is -0.15mm to -0.1mm.

[0073] In some possible implementations, in order to effectively secure cable 4;

[0074] The fixture 1 is provided with threaded holes, and the cover plate 2 is provided with through holes that correspond to the threaded holes; the fastener 3 is a screw.

[0075] The through hole is a stepped hole, and the screw passes through the stepped hole and engages with the threaded hole to achieve the connection and fixation of the body 11 and the cover plate 2.

[0076] In some possible implementations, the threaded holes are in multiple sets and arranged along the axial direction of the relief groove 111, with the multiple sets of threaded holes located on both sides of the relief groove along its axial direction.

[0077] Furthermore, both the fixture 1 and the cover plate 2 are made of alloy steel, which allows for long-term repeated use;

[0078] The chuck 12 is used in conjunction with the lathe chuck and can be prismatic or cylindrical.

[0079] In actual processing, the coaxiality between the center of the end face machining exit and the chuck is 0.03mm, and the perpendicularity between the plane of the end face machining exit and the axis of the chuck is 0.03mm.

[0080] A method for machining cable end faces based on the above-described auxiliary tooling for turning semi-rigid coaxial cables specifically includes the following steps:

[0081] Step S1: Place the bent cable 4 into the cable 4 fixture 1, install the cover plate 2, and fix it with fasteners 3; wherein the end of the cable 4 located at the processing end face outlet 1110 will pass through the processing end face outlet 1110, and the bent cable 4 will be located in the transition section 1111 and section 1112.

[0082] Step S2: Install auxiliary tooling; use the lathe chuck to clamp the collet 12;

[0083] Step S3: Processing the four ends of the cable;

[0084] Step S3 specifically includes the following steps:

[0085] Step S31: The lathe controls the chuck 12 to rotate around the axis of the chuck 12. The end face of the cable 4 located on the side of the machining end face outlet 1110 is machined until the end face of the fixture 1 is reached, thus completing the end face machining of one end with a length of L1.

[0086] Step S32: Remove cable 4 and clamp cable 4 with a different head. At this time, the unprocessed end face of the bent cable 4 will pass through the processed end face outlet 1110, and the processed end face is located in section two 1113. The bent cable 4 will be located in the transition section 1111 and section two 1113.

[0087] Step S33: Repeat step S31 to process the end face of a section of cable with a length of L2; process until the end face of fixture 1 is reached;

[0088] Step S4: Complete the processing of both ends of cable 4, remove the auxiliary tooling, remove the cover plate 2, and take out cable 4.

[0089] The present invention effectively achieves the processing of the cable 4's processing end face by setting up a clamping cavity and ensuring that the plane where the cable 4's processing end face is located is perpendicular to the axis of the clamp 12, and that the center of the cable 4's processing end face is on the same straight line as the axis of the clamp 12.

[0090] This invention is not limited to the specific embodiments described above. The invention extends to any new feature or combination disclosed in this specification, as well as any new method or process step or combination disclosed herein.

Claims

1. A semi-rigid coaxial cable turning auxiliary tooling, used in conjunction with a lathe, characterized in that, The device includes a fixture connected to a lathe, a cover plate mounted on the fixture and forming a clamping cavity between the cover plate and the fixture, and fasteners for fixing the cover plate and the fixture; the clamping cavity includes a relief groove one disposed on the fixture and with the same bending angle as the cable, and a relief groove two disposed on the cover plate and corresponding to the relief groove one; both ends of the relief groove one penetrate the fixture. The fixture includes a body with a relief groove and a chuck mounted on the body and connected to a lathe. The relief groove includes a machining end face outlet on the end face of the fixture away from the chuck, a transition section connected to the machining end face outlet and coaxially arranged with the chuck, a support section connected to the other end of the transition section, and a fixed end face outlet connected to the end of the support section away from the transition section. Wherein, the center of the processing end face outlet is on the same straight line as the axis of the chuck, and the plane of the surface where the processing end face outlet is located is perpendicular to the axis of the chuck. The first and second relief grooves have the same structure, with a depth of H and a diameter of D, where H = D / 2; the diameter is equal to the outer diameter of the cable. The branch includes section one and section two; the fixed end face outlet includes outlet one connected to section one and outlet two connected to section two; outlet one and outlet two are arranged on two symmetrical sides of the body along the clamp. The diameter tolerance of relief groove one or relief groove two is 0.1mm~0.2mm, and the depth tolerance of relief groove one or relief groove two is -0.15mm~-0.1mm. The fixture is characterized by threaded holes, and the cover plate is provided with corresponding through holes; the fastener is a screw.

2. The auxiliary tooling for turning semi-rigid coaxial cables according to claim 1, characterized in that, The threaded holes are in multiple sets and are arranged along the axial direction of the relief groove. The multiple sets of threaded holes are located on both sides of the relief groove along its axial direction.

3. A method for machining the cable end face using a semi-rigid coaxial cable turning auxiliary fixture according to any one of claims 1-2, characterized in that, Specifically, the following steps are included: Step S1: Place the bent cable into the cable jig, install the cover plate, and fix it with fasteners; wherein the cable is located in the transition section and section one, and the end of the cable at the processing end face outlet will pass through the processing end face outlet; Step S2: Install auxiliary tooling; use the lathe chuck to clamp the collet; Step S3: Cable end face processing; Step S31: The lathe controls the chuck to rotate around its axis, and the cable is located on the end face of the machining end face exit side for machining until the end face of the fixture is reached; Step S32: Remove the cable, clamp the cable head, and place the cable in the transition section and section two. The end of the cable at the processing end face outlet will pass through the processing end face outlet. Step S33: Repeat step S31; Step S4: After processing is complete, remove the auxiliary tooling, remove the cover plate, and take out the cable.

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