A chamfering machine for coaxial cable center conductor

Abstract

The utility model discloses a chamfering machine for coaxial cable center conductor belongs to the field of precision machining, this chamfering machine adopts modularization design, mainly includes drive module, tool module, floating guide module and depth control module, floating guide module is equipped with the guide bushing with precision guide hole, can effectively guide and position flexible cable inner conductor, depth control module is accurate to limit chamfering depth through replaceable cushion block, the utility model especially solves the problem of difficult chamfering and precision not easy control of flexible cable inner conductor because of easy deformation, has compact structure, low cost, easy operation and processing quality stability etc.

Description

Technical Field

[0001] This utility model relates to the field of precision machining technology, specifically a chamfering machine for the center conductor of a coaxial cable. Background Technology

[0002] In the assembly of RF connectors, the mating joint of the inner conductor is often designed as a flexible socket structure, which requires chamfering of the inner conductor end. Existing technology, manual chamfering suffers from low efficiency and inconsistent quality; while professional chamfering equipment (such as the Sonig SR1000), although highly precise, is mainly designed for rigid cables and has high purchase and maintenance costs, making it difficult to apply economically to flexible cable processing scenarios. Common chamfering tools consist of a set of multiple specially sized blades arranged circumferentially to form a tapered cutting edge for chamfering the inner conductor. This structure places high demands on the processing and installation of the blades. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a chamfering machine for the center conductor of coaxial cable, so as to solve the problems of difficult chamfering of flexible cable, high equipment cost and difficulty in controlling processing accuracy in the prior art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A chamfering machine for the center conductor of a coaxial cable includes a frame, a drive module, a tool module, a floating guide module, and a depth control module; the drive module is mounted on the frame; the tool module is driven by the drive module to perform rotary cutting; the floating guide module is used to guide the inner conductor of the cable and position its end face; the depth control module is used to limit the stroke of the floating guide module to control the chamfering depth.

[0005] Preferably, the drive module includes a motor and a coupling, wherein the coupling is located on the output shaft of the motor and is connected to the tool module for transmission.

[0006] Preferably, the tool module includes a tool holder connected to the drive module and a tool head mounted on the tool holder via a bearing, the tool head having a V-shaped cross-cutting edge structure.

[0007] Preferably, the material of the cutting head is mold steel.

[0008] Preferably, the floating guide module includes a sliding sleeve, a guide sleeve, and an elastic element; The sliding sleeve is axially slidably sleeved on the outside of the tool holder of the tool module; The guide sleeve is fixedly connected to the front end of the sliding sleeve, and the cutter head is accommodated inside it; The elastic element provides a continuous forward preload to the sliding sleeve.

[0009] Preferably, the front end of the guide sleeve is provided with a guide hole for the inner conductor of the cable to pass through, and the diameter of the guide hole is 0.1 mm to 0.5 mm larger than the diameter of the inner conductor of the cable.

[0010] Preferably, the front end of the guide sleeve is provided with an annular panel for abutting against the cable end face.

[0011] Preferably, the side wall of the guide sleeve is provided with a chip removal hole.

[0012] Preferably, the elastic element is a spring, which is always in a compressed state to provide forward thrust to the sliding sleeve.

[0013] Preferably, the depth control module includes a pad that is detachably mounted on the frame, and the retraction stroke of the floating guide module can be adjusted by replacing pads of different sizes.

[0014] The beneficial effects of this utility model are: This invention provides a chamfering machine for the center conductor of coaxial cables. Through modular design, the driving, cutting, guiding, and depth control functions are decoupled and then re-integrated, achieving high reliability and ease of maintenance. The unique floating guide mechanism effectively compensates for the deformation of flexible cables, solving their positioning challenges. The replaceable pad design provides precise depth control. The overall structure is simple, and the manufacturing cost is low, making it particularly suitable for large-scale, high-consistency chamfering of the inner conductors of flexible cables. Attached Figure Description

[0015] Figure 1 This is a schematic cross-sectional view of the overall structure of an embodiment of the present utility model; Figure 2 for Figure 1 A magnified view of a portion of the image; Figure 3 This is a three-dimensional structural diagram of the blade of this utility model; Figure 4 This is a side view of the blade head of this utility model; Figure 5 This is a partially enlarged view of the blade head of this utility model; Figure 6 This is a three-dimensional structural diagram of the guide sleeve of this utility model; Explanation of icon numbers: 100. Rack; 201. Motor; 202. Coupling; 301. Tool holder; 302. Bearing; 303. Tool head; 3031. Cutting edge; 401. Sliding sleeve; 402. Guide sleeve; 4021. Guide hole; 4022. Panel; 4023. Chip removal hole; 4024. Chamfer; 403. Spring; 500. Cable; 601, bracket; 602, pad. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: See Figures 1 to 6 This utility model provides a chamfering machine for the center conductor of a coaxial cable, comprising a frame, a drive module, a tool module, a floating guide module, and a depth control module; the drive module is mounted on the frame; the tool module is driven by the drive module to perform rotary cutting; the floating guide module is used to guide the inner conductor of the cable and position its end face; the depth control module is used to limit the stroke of the floating guide module to control the chamfering depth.

[0017] The beneficial effects of this utility model are: This invention utilizes a modular design to decouple and re-integrate the driving, cutting, guiding, and depth control functions, achieving high reliability and ease of maintenance. The unique floating guide mechanism effectively compensates for the deformation of the flexible cable, solving its positioning problem. The replaceable pad design provides precise depth control. The overall structure is simple, with low manufacturing costs, making it particularly suitable for large-scale, high-consistency chamfering of the inner conductor of flexible cables.

[0018] Preferably, the drive module includes a motor and a coupling, wherein the coupling is located on the output shaft of the motor and is connected to the tool module for transmission.

[0019] As can be seen from the above description, it can provide stable and reliable rotational power output.

[0020] Preferably, the tool module includes a tool holder connected to the drive module and a tool head mounted on the tool holder via a bearing, the tool head having a V-shaped cross-cutting edge structure.

[0021] As described above, the V-shaped cross structure naturally forms multiple symmetrical cutting edges, which are naturally arranged circumferentially along the center of rotation of the cutting head, resulting in high centering accuracy. Compared to chamfering cutters that combine multiple blades, this cutting head structure is simpler, easier to process, and can be assembled in one step without adjustment. Furthermore, the one-step chamfering results in high quality and low manufacturing cost.

[0022] Preferably, the material of the cutting head is mold steel.

[0023] As can be seen from the above description, the manufacturing cost of the knife was effectively controlled while ensuring the sharpness and wear resistance of the blade.

[0024] Preferably, the floating guide module includes a sliding sleeve, a guide sleeve, and an elastic element; The sliding sleeve is axially slidably sleeved on the outside of the tool holder of the tool module; The guide sleeve is fixedly connected to the front end of the sliding sleeve, and the cutter head is accommodated inside it; The elastic element provides a continuous forward preload to the sliding sleeve.

[0025] As described above, this constitutes an axially floating guide mechanism that can adapt to the cable's propulsion force and ensure a safe distance between the cutting head and the conductor end face before processing.

[0026] Preferably, the front end of the guide sleeve is provided with a guide hole for the inner conductor of the cable to pass through, and the diameter of the guide hole is 0.1 mm to 0.5 mm larger than the diameter of the inner conductor of the cable.

[0027] As described above, it provides precise radial positioning for the inner conductor of the flexible cable, preventing it from swaying during processing while allowing minute deformations to pass smoothly.

[0028] Preferably, the front end of the guide sleeve is provided with an annular panel for abutting against the cable end face.

[0029] As described above, a precise axial machining reference surface is provided to ensure that the chamfering starting position of all cables is consistent.

[0030] Preferably, the side wall of the guide sleeve is provided with a chip removal hole.

[0031] As described above, it provides a smooth discharge channel for cutting chips, preventing chip accumulation from affecting machining accuracy or damaging the equipment.

[0032] Preferably, the elastic element is a spring, which is always in a compressed state to provide forward thrust to the sliding sleeve.

[0033] As described above, the guide module can automatically reset when not in operation and maintain stable contact between the guide sleeve and the cable end face during operation.

[0034] Preferably, the depth control module includes a pad that is detachably mounted on the frame, and the retraction stroke of the floating guide module can be adjusted by replacing pads of different sizes.

[0035] As can be seen from the above description, a simple, reliable and high-precision chamfer depth adjustment scheme is provided, which enhances the process adaptability of the equipment.

[0036] Example 1 See Figures 1 to 6This embodiment of a chamfering machine for the center conductor of a coaxial cable includes a frame 100, a drive module, a cutting tool module, a floating guide module, and a depth control module.

[0037] like Figures 1 to 2 As shown, the drive module includes a motor 201 fixed on the frame 100 and a coupling 202 driven by the motor 201.

[0038] The tool module includes a tool holder 301 that receives power via the coupling 202 and a tool head 303 that is rotatably mounted on the front end of the tool holder 301 via a bearing 302. Figures 3 to 5 The cutter head 303 consists of two mutually perpendicular V-shaped grooves machined on its end face. The V-shaped grooves have an angle of 60 degrees, an upper edge width of 1.3 mm, and a depth of 1 mm. The two grooves intersect to form four cutting edges 3031. The included angle between the four cutting edges is 90 degrees. A tapered blade with an outer edge of 1.8 mm and a depth of 1 mm is formed along the center of the cutter head. The material is die steel, and its hardness after heat treatment is better than HRC45. The inner conductor of the RF cable is typically copper, and the selected material possesses excellent wear resistance and cost-effectiveness.

[0039] The floating guide module includes a sliding sleeve 401 disposed outside the tool holder 301, a guide sleeve 402 fixed to the front end of the sliding sleeve 401 by a threaded connection, and a spring 403 acting on the rear end of the sliding sleeve 401. The guide sleeve 402 (combined with...) Figure 6 The front end of the guide sleeve 402 has a precision guide hole 4021, the diameter D of which is set according to the diameter d of the inner conductor of the cable 500 to be processed, satisfying D=d+(0.1~0.5)mm to achieve precise guidance. The end face edge of the guide hole 4021 has a chamfer 4024. The front end face of the guide sleeve 402 has an annular panel 4022 for abutting against the cable end face. The side wall of the guide sleeve 402 has at least one chip removal hole 4023. Multiple chip removal holes 4023 can be designed and evenly distributed along the circumference of the side wall of the guide sleeve. The chip removal hole located at the bottom is mainly used for chip removal. Since the guide sleeve and the sliding sleeve are connected by a threaded locking connection, the starting position of the thread is not uniform during thread processing. If only one chip removal hole 4023 is set, high requirements are placed on the thread processing accuracy. It is necessary to ensure that the chip removal hole 4023 is located at the bottom. Designing multiple chip removal holes 4023 can greatly reduce the requirements for thread processing accuracy.

[0040] The depth control module includes a bracket 601 fixed to the frame 100 and a pad 602 disposed behind the sliding sleeve 401 and detachably mounted on the bracket 601.

[0041] During operation, the inner conductor of cable 500 is passed through guide hole 4021. The cable is continued to be advanced until its end face contacts panel 4022, pushing the entire floating guide module (guide sleeve 402 and sliding sleeve 401) backward against the preload of spring 403 until the rear end of sliding sleeve 401 contacts pad 602 (e.g., ...). Figure 2 (As shown). During the backward sliding process, the rotating cutter head 303 precisely performs chamfering on the inner conductor of the cable 500 that extends into its V-shaped cutting edge. The chamfering size of the inner conductor of the cable 500 is determined by the size of the inner conductor and the depth to which the inner conductor is inserted into the cutter head. By controlling the thickness of the pad 602, the depth to which the cable 500 is inserted into the cutter head can be controlled, thereby ensuring the requirements for different cables and chamfering depths. The generated debris is discharged from the chip discharge hole 4023.

[0042] This utility model has been described with reference to the above-described embodiments and accompanying drawings. However, the above embodiments are merely examples for implementing this utility model. It must be noted that the disclosed embodiments do not limit the scope of this utility model. On the contrary, modifications and equivalent provisions included in the spirit and scope of the claims are all included within the scope of this utility model.

Claims

1. A chamfering machine for the center conductor of a coaxial cable, characterized in that, include: The device comprises a frame, a drive module, a tool module, a floating guide module, and a depth control module; the drive module is mounted on the frame; the tool module is driven by the drive module to perform rotary cutting; the floating guide module is used to guide the inner conductor of the cable and position its end face; and the depth control module is used to limit the stroke of the floating guide module to control the chamfering depth.

2. The chamfering machine for the center conductor of a coaxial cable according to claim 1, characterized in that, The drive module includes a motor and a coupling. The coupling is located on the output shaft of the motor and is connected to the tool module for transmission.

3. The chamfering machine for the center conductor of a coaxial cable according to claim 1, characterized in that, The cutting tool module includes a tool holder connected to the drive module and a cutting head mounted on the tool holder via a bearing. The cutting head has a V-shaped cross-cutting edge structure.

4. The chamfering machine for the center conductor of a coaxial cable according to claim 3, characterized in that, The cutter head is made of mold steel.

5. The chamfering machine for the center conductor of a coaxial cable according to claim 3, characterized in that, The floating guide module includes a sliding sleeve, a guide sleeve, and an elastic element; The sliding sleeve is axially slidably sleeved on the outside of the tool holder of the tool module; The guide sleeve is fixedly connected to the front end of the sliding sleeve, and the cutter head is accommodated inside it; The elastic element provides a continuous forward preload to the sliding sleeve.

6. The chamfering machine for the center conductor of a coaxial cable according to claim 5, characterized in that, The front end of the guide sleeve is provided with a guide hole for the inner conductor of the cable to pass through, and the diameter of the guide hole is 0.1 mm to 0.5 mm larger than the diameter of the inner conductor of the cable.

7. The chamfering machine for the center conductor of a coaxial cable according to claim 5, characterized in that, The front end of the guide sleeve is provided with an annular panel for abutting against the cable end face.

8. The chamfering machine for the center conductor of a coaxial cable according to claim 5, characterized in that, The guide sleeve has chip removal holes on its side wall.

9. The chamfering machine for the center conductor of a coaxial cable according to claim 5, characterized in that, The elastic element is a spring, which is always in a compressed state, providing a forward thrust to the sliding sleeve.

10. The chamfering machine for the center conductor of a coaxial cable according to claim 1, characterized in that, The depth control module includes a pad that is detachably mounted on the frame, and the retraction stroke of the floating guide module can be adjusted by replacing pads of different sizes.

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