Crimping neck

Abstract

The present disclosure relates to a crimp neck (1) comprising a collar (2) made of metal and extending in a longitudinal direction (x). The crimping neck (1) comprises a side surface (3) having a number of first grooves (4) arranged in the side surface (3), extending in a circumferential direction and made by a first metal cutting process by removing metal from the collar (2). The side surface (3) further comprises a number of second grooves (5) arranged in the side surface (3), distributed in the circumferential direction and extending in the longitudinal direction (x) of the collar (2).

Description

Technical Field

[0001] The present disclosure relates to a crimp neck made by a metal cutting process and to such a metal cutting process. Background Art

[0002] WO03103095, published by TRU on December 11, 2003, relates to an electrical connector comprising a body having a mating connector end and a cable receptacle end, the cable receptacle end having a cable opening therein for receiving at least a portion of a transmission line cable. A center conductor pin disposed in the connector body comprises a receptacle structure having a portion defining a receptacle opening extending therethrough. The receptacle opening is sized to receive a center conductor or adapter pin of a cable. The cable receptacle portion may be sized to allow a cable braid of a coaxial cable to be mounted on an outer surface, which may be knurled to resist axial movement of the braid relative to the portion.

[0003] US3757278 published by AMP Inc. on September 4, 1973 relates to a subminiature coaxial contact having a cavity in one end for receiving a stripped center conductor of a small size coaxial cable and provided with an insulating sleeve movably positioned thereon and initially disposed in the middle of its end.

[0004] US3296363, published by AMP Corporation on January 3, 1967, relates to a coaxial connector construction including a sleeve extension having serrations or grooves against which the metal of the connector crimp ferrule is formed. In one embodiment, the extension surface is knurled in a cross and spiral groove pattern to define a surface that locks the connector against both twisting and pull-out forces. In an alternative embodiment, the extension surface is serrated with axial and transverse grooves that lock against such forces. Summary of the invention

[0005] The crimping neck is a well-known connecting element for connecting a cable to a connector housing. In particular, the combination of a knurled outer surface and a tubular crimping sleeve arranged thereon is a common and common means of attachment. Knurling is a manufacturing process, typically performed on a lathe. A pattern of straight, angled or crossed lines is rolled into the material. In the context of crimping necks, the knurling process is known in the form of a cold forming process. Typically, knurling is applied in the form of knurl rolling, whereby one or more rollers containing the reverse side of the pattern to be imposed are in contact with the surface of the slug. Although knurling is a cost-effective process with a high surface quality, the process of manufacturing the knurling by plastic deformation as well as the knurled surface itself can have certain disadvantages.

[0006] Due to the greater loads occurring during the knurling process, the workpieces must have a higher wall thickness, which results in more material consumption. Thin-walled workpieces may generally not be knurled by a knurling process in which the material is plastically deformed, because there is a risk of deforming the entire workpiece. The applied forces can deform the main geometry in an undesirable way. Since knurling is a rolling process, the knurling tool is pressed against the surface to be knurled. The resulting bending forces can deform the thin-walled workpiece in an undesirable way. In addition, the cutting rate and the feed rate are lower compared to metal cutting processes, which leads to relatively long machining processes compared to standard metal cutting processes (like turning or milling). Moreover, for brittle and less ductile metals, there are material-dependent limitations on the surface quality that can be obtained.

[0007] In particular, producing knurled surfaces using metals with lower ductility presents challenges. When producing knurled surfaces, a cold-formable ductile material is required that allows a knurling tool, such as at least one roller, to press the surface into the desired shape. Metals and alloys with lower ductility and higher brittleness tend to show microcracks and burrs on the knurled area because they have only limited cold forming capabilities. In addition to the unsatisfactory surface quality, knurling tools also show significantly lower life for metals and alloys with lower ductility and higher brittleness. Although undesirable burrs can be removed in a post-processing step (although this is difficult because they tend to get stuck in the pyramidal recesses of the knurled structure), microcracks remain a serious problem, with the risk of causing corrosion, fatigue and / or creep-driven failure of the entire component over time.

[0008] The present disclosure is therefore directed to a crimping neck having improved properties compared to the knurled surfaces known from the prior art.

[0009] The crimping neck according to the present disclosure generally comprises a collar which is made of metal and extends in the longitudinal direction. Although a wide variety of metals can be used, brass alloys are preferred because they provide good electrical conductivity, corrosion resistance and good machinability. Good results with respect to the clamping force generated by crimping can be achieved when the base of the collar is designed as a substantially rotationally symmetrical component, preferably in the form of a cylindrical sleeve. The collar may include additional means in the form of a groove (recess) to increase the traction between the braid (respectively, the outer sheet of an electrical or optical cable) and the crimping neck when clamped from the outside by the crimping sleeve. The crimping neck according to the present disclosure may be interconnected to the housing of a cable connector, or be part of the housing.

[0010] The collar of the crimping neck typically comprises an outer side surface (shell surface of the collar). Good results can be achieved when the side surface comprises a first section and a second section, as described in more detail below. Depending on the design of the crimping neck, the first section and the second section of the side surface may have the same diameter and merge into each other, respectively overlapping each other in the longitudinal direction. Alternatively, the first section and the second section may be separated from each other in the longitudinal direction by a circumferential channel or recess. In addition, the first section and the second section may have different diameters from each other, which results in a staggered design.

[0011] While knurling provides a surface structure with good mechanical properties, two of the main disadvantages are undesirable deformation and material chipping, which can cause negative effects and often require additional manufacturing steps, such as plating or grinding of the surface, to obtain an acceptable surface structure.

[0012] Since knurling is a cold forming process, the force applied in the circumferential direction by one or more rollers to produce the typical pattern requires relatively thick-walled components. In addition, for metals with lower ductility, undesirable material fragmentation may occur, which results in an unusable surface structure. Especially for materials with lower ductility, an improved design with similar properties in terms of the retention effect of the knurled surface is desired. In particular, in order to attach optical or electrical cables, etc. to cable connectors, a variety of common cable types and diameters, cable configurations, connector designs, crimping elements and crimping tools result in many different crimping sizes throughout various industries. Therefore, a universal structure that provides the desired retention performance and is suitable for various designs of crimping necks is desired. Compared with known knurling designs, a ferrule including a groove made by one or more metal cutting processes shows similar properties with respect to pull-out resistance.

[0013] The crimping neck according to the present disclosure generally includes a side surface having a plurality of first grooves and a plurality of second grooves adjacent thereto or at least partially overlapping therewith, which are preferably made by a metal cutting process, i.e., by removing material. The plurality of first grooves and the plurality of second grooves are designed so that the crimping neck can be manufactured without cold forming the material. Depending on the manufacturing process, the plurality of first grooves and the plurality of second grooves can be made in a single manufacturing process (e.g., by turning and / or milling). Alternatively, the plurality of first grooves can be made by turning, and the plurality of second grooves are made by a forming process. The crimping neck can be used to attach the cable to the connector body. Therefore, the crimping neck can include a through hole extending in the longitudinal direction and configured to receive at least the inner conductor of the cable. The crimping neck is typically configured to interconnect the shielding braid or mesh of the cable to the cable connector. In order to easily assemble and open the shielding braid or mesh without hooking (buckle) the shielding braid or mesh, the crimping neck may include an introduction surface fused into the side surface. In a variation, the introduction surface is preferably arranged at the distal end of the crimping neck and is designed to be funnel-shaped. The diameter of the collar preferably widens from the distal end of the crimping neck towards the first section.

[0014] Although less ductile and more brittle metals and alloys present challenges to the knurling process, as discussed in more detail above, these materials possess advantageous properties for machining and particularly metal cutting operations. For turning operations (particularly on automatic lathes, milling machines, etc.), it is important that the material is broken into smaller chips, since ribbons and tangled chips are undesirable since they tend to wrap around the tool and workpiece and accumulate, thereby negatively affecting the surface quality of the workpiece and the life of the tool. Higher ductile materials result in ribbons and tangled chips, while brittle materials break into smaller chips during machining operations. Especially in the context of brass alloys, alloys containing lead have been widely used to date, since low percentages of lead of 1-3% improve the machinability of the alloy. Where lead-free materials are desired and required due to current environmental standards, there is a need for designs of crimp necks that can be produced with lead-free alloys without undesirable side effects (like cracks or burrs). Alloys with added silicon additions (for example in alloys like CuZn21Si3P or CuZn36Si) include increased material hardness and brittleness. Although these alloys show microcracks and burrs on the knurled area, they are suitable for metal cutting operations.

[0015] Several first grooves are preferably arranged in the side surface, extend in the circumferential direction, and are made by removing metal from the collar by a first metal cutting process. Good results can be achieved when several first grooves are made in the form of V-shaped or U-shaped grooves by an automatic lathe. During the manufacturing process, the grooves are cut into the surface of the base of the collar. In a variant, the grooves are V-shaped or U-shaped grooves, which provide a good holding effect because the wire or mesh (respectively, foil) of the shielding braid is received by the groove in the installed state and clamped to the crimping neck by the crimping sleeve. The wire or mesh is pressed into the groove by the crimping sleeve. In addition, the geometry allows the use of standardized cutter heads. When several first grooves have a rounded bottom, good results can be achieved with respect to both the clamping effect and the smooth transition of forces without pressure peaks. One of the advantages of the design of several first grooves and several second grooves is that the depth of several first grooves and several second grooves can be kept less than the depth of the pyramidal recess of the corresponding knurling design, which mechanically weakens the crimping neck less. This allows a reduction in overall wall thickness.

[0016] In order to produce a crimping neck with a plurality of first grooves and a plurality of second grooves, a substantially cylindrical blank is typically provided, which is clamped to a processing machine. In order to clamp the blank to the processing machine, the blank and the subsequently finished crimping neck may include a clamping surface. The collar of the crimping neck is typically fused into the clamping surface at the back end of the crimping neck, by which the crimping neck is held during the metal cutting process. The clamping surface is typically designed as a cylindrical or polygonal neck having a diameter greater than the diameter of the collar. The plurality of first grooves arranged in the side surface typically extend in a circumferential direction and are cut by removing metal from the base of the collar during the first metal cutting process.

[0017] Good results can be achieved when the several first grooves are cut by means of a tool head on a lathe or the like, wherein the crimping neck is clamped to the machine and rotated relative to the tool head. The several first grooves can be designed as annular grooves arranged adjacent to each other in the longitudinal direction. The several first grooves arranged adjacent to each other can be arranged from the dorsal end of the side surface to the distal end of the side surface. In the installed state, the several first grooves are configured to attach, for example, a shielding braid, a mesh or a foil and prevent sliding in the longitudinal direction.

[0018] In order to also avoid that the shielding braid, mesh or foil slides in the circumferential direction in the mounted state, several second grooves may be arranged in the side surface in the base of the collar, distributed in the circumferential direction. The several second grooves typically extend in the longitudinal direction of the collar. The several second grooves are preferably made by a second metal cutting process by removing metal from the base of the collar. Alternatively, the several second grooves may be made by a forming and / or molding process. The several first grooves typically have a rounded bottom, while the several second grooves may have a pointed cross section.

[0019] The plurality of second grooves may be arranged at a slight angle relative to the longitudinal direction, thereby producing a spiral orientation similar to a thread. Depending on the selected metal cutting process, the plurality of first grooves may be produced before the plurality of second grooves are produced, or vice versa. The order of the metal cutting processes depends on the design of the crimping neck and the selected manufacturing process. Therefore, the second metal cutting process may also be performed first, and vice versa. In addition, the plurality of first grooves and the plurality of second grooves may be made in one process step, whereby the first metal cutting process and the second metal cutting process are actually one cutting process. Producing the plurality of first grooves by the first metal cutting process before producing the plurality of second grooves by the second metal cutting process may have the following advantages: when the cutting tool passes through the plurality of first grooves, the chips in the axial grooves are broken into shorter chips. The plurality of second grooves in the form of longitudinal grooves may be milled or formed.

[0020] The depth and width of the respective grooves play a role, since the depth has an influence on the holding force in the form of friction, and the geometry of the grooves results in an exact locking of the wire or braid attached therein. Deep grooves can result in the crimped material not reaching the bottom of the respective grooves. For narrow grooves, there can be a risk that the material is cut off and the holding force is thus reduced. The geometry of the first grooves, in particular the width and / or the depth, can also vary. In particular for an increased depth and / or width from the distal end to the dorsal end (e.g. also by slightly increasing the outer diameter of the collar). This allows the application of force to be better distributed along the length and to achieve a higher pull-out force.

[0021] It is also important that the edges of the respective grooves are not too sharp, for example not at right angles, as sharp angles can lead to shearing of the crimped material. Good results can be achieved with a 90° V-groove, whereby the edge is 135°.

[0022] Good results can be achieved when several second grooves are cut by a planing tool. After cutting several first grooves, several second grooves can be cut in one clamping on the same machine and / or the same tool. If appropriate, the first metal cutting process and the second metal cutting process can be identical. Several second grooves can be cut by moving the planing tool relative to the side surface in the longitudinal direction, whereby at least one cutting edge of the planing tool penetrates the side surface. Alternatively, the second grooves can also be cut by a forming tool. For a symmetrical load distribution in the circumferential direction, several second grooves are arranged rotationally symmetrically in the side surface, preferably distributed equally in the circumferential direction.

[0023] The plurality of second grooves typically extend in the longitudinal direction of the collar and are made by removing metal from the collar during the second metal cutting process. In a variant, the plurality of first grooves and the plurality of second grooves may be arranged adjacent to each other. The plurality of first grooves may be arranged at a first section of the side surface, and the plurality of second grooves may be arranged at a second section of the side surface. The plurality of second grooves may be designed so that the respective first ends of the plurality of second grooves fuse into the lead-in surface, and the second ends of the respective second grooves fuse into the first of the plurality of first grooves. Depending on the design of the crimping neck, the first section and the second section of the side surface may have the same diameter, so that the plurality of first grooves may fuse into the plurality of second grooves. The plurality of first grooves are preferably arranged adjacent to the distal end of the crimping neck, and / or the plurality of second grooves are arranged adjacent to the dorsal end.

[0024] Alternatively or in addition, several first grooves and several second grooves overlap each other at least partially, thereby forming a grid pattern in the overlapping area. Several second grooves can be arranged parallel to the longitudinal direction, thereby forming a grid pattern with several first grooves arranged transversely to the longitudinal direction. The grid can be rectangular relative to the longitudinal direction. Several second grooves can be arranged only at the first section of the side surface, or extend from the distal end of the crimping neck toward the dorsal end. Several second grooves typically protrude above several first grooves in the distal direction. Several second grooves can thus pierce several first grooves. This is particularly advantageous for production because it allows the structure to be added to the side surface in a single production step. Depending on the field of application and the geometry of the wires of the shielding braid or the thickness of the foil, several first grooves are at least partially deeper than several second grooves, or vice versa.

[0025] Tests have shown that a limited number of second grooves in the form of V-shaped or U-shaped grooves in the longitudinal direction result in cable retention and torque resistance similar to a knurled surface. For a cylindrical or hexagonal crimp sleeve, a number of at least six to ten or up to 60 grooves extending from the distal end to the first one or up to three first grooves arranged adjacent to the distal end of the crimp neck shows comparable results with respect to pull-out resistance against torsion compared to the knurled surface. For a given diameter of the ring, in use, the depth of several of the first grooves and the depth of several of the second grooves may be less than the depth of the smallest knurl.

[0026] It will be understood that both the foregoing general description and the following detailed description present embodiments and are intended to provide an overview or framework for understanding the nature and character of the present disclosure. The accompanying drawings are included to provide further understanding and are incorporated into and constitute a part of this specification. The accompanying drawings illustrate various embodiments and, together with the description, serve to explain the principles and operation of the disclosed concepts. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The disclosure described herein will be more fully understood from the detailed description given herein below and the accompanying drawings, which should not be considered to be limiting of the disclosure described in the appended claims.

[0028] In the attached figure:

[0029] Figure 1 a perspective view showing a first variation of a crimp neck with a portion cut away, the crimp neck having a cable and a crimp sleeve attached thereto;

[0030] Figure 2 Display according to Figure 1 An exploded perspective view of a first variation of a crimping neck having a cable and a crimping sleeve attached thereto;

[0031] Figure 3 A perspective view showing a first variation of a crimp neck;

[0032] Figure 4 A perspective view showing a second variation of the crimp neck;

[0033] Figure 5 a perspective view showing a third variation of the crimp neck;

[0034] Figure 6 a perspective view showing a fourth variation of the crimp neck;

[0035] Figure 7 A perspective view showing a fifth variation of the crimp neck. DETAILED DESCRIPTION

[0036] Reference will now be made in detail to certain embodiments, examples of which are illustrated in the accompanying drawings in which some, but not all, features are shown. Indeed, the embodiments disclosed herein may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements. Whenever possible, like reference numerals will be used to refer to like components or parts.

[0037] Figure 1 and Figure 2 A perspective view of a first variation of a crimping neck 1 is shown with a cable and a crimping sleeve attached thereto. Figure 1 A first variant of the crimping neck 1 is shown with a partial cutout, and Figure 2 A first variant of the crimping neck 1 is shown in an exploded view. The variant shown of the crimping neck 1 comprises a collar 2 made of metal and extending in the longitudinal direction x. Figure 1Optimally obtained, the collar 2 shown is designed as a part that is essentially rotationally symmetrical with respect to the longitudinal direction x. This leads to good results with respect to the transmission of forces in the circumferential direction in the installed state. In the variant shown, the collar 2 is designed as a cylindrical sleeve, which is used to attach a cable to a cable connector. The cable shown (not part of the claimed crimping neck 1 or connector) comprises an inner conductor 13 surrounded by an insulating layer 14, which is surrounded by an outer conductor in the form of a shielding braid 15, which is surrounded by a cable sheath 16. In the variant shown, the shielding braid 15 is attached to the crimping neck 1 by a crimping sleeve 17 in the form of a cylindrical or polygonal crimping sleeve, which is deformed in the circumferential direction in the installed state. The crimping neck 1 shown can be part of a cable connector, which includes a crimping neck 1 and a connector body for interconnecting cables. The variant shown of the crimping neck 1 is manufactured as a separate part connected to the connector body. Alternatively, the crimping neck 1 and the connector body can be made in an integrated manner.

[0038] Figures 3 to 6 A first to a fourth variant of a crimping neck 1 is shown. All shown variants of the crimping neck 1 comprise a collar 2 comprising a side surface 3 corresponding to the housing surface of the collar 2. The side surface 3 of the shown variants comprises a first section 9 and a second section 10, the first section 9 merging into the second section 10. The respective side surface 3 of all shown variants of the crimping neck 1 comprises a number of first grooves 4 and a number of second grooves 5. The number of first grooves 4 and the number of second grooves 5 are designed to allow the crimping neck 1 to be manufactured without forming the material, in particular without cold forming the material.

[0039] The crimping neck 1 shown is preferably used to attach a cable to a connector body. Therefore, all shown variations of the crimping neck 1 include a through hole 18, which extends along the longitudinal direction x and is configured to receive the inner conductor 13 of the cable. The crimping neck 1 shown is typically configured to attach the shielding braid 15 of the cable to the cable connector. For ease of assembly and to open the shielding braid 15, all shown crimping necks 1 include an introduction surface 8, which merges into the side surface 3. The introduction surface 8 of the shown variations is designed to be funnel-shaped and merges into the first section 9. Several first grooves 4 are arranged in the side surface 3 and extend in the circumferential direction. Several first grooves 4 are made by removing metal from the collar 2 by a first metal cutting process.

[0040] Good results are obtained when several first grooves 4 are produced by an automatic lathe in the form of V-shaped or U-shaped grooves. Good results are achieved both with respect to the clamping effect and the smooth transition of forces without pressure peaks when several first grooves 4 have a rounded bottom 7. The shown variant of the crimping neck 1 is designed so that the first section 4 and the second section 10 of the side surface 3 have the same diameter and merge into each other. Alternatively, the first section 9 and the second section 10 can be separated from each other in the longitudinal direction by a channel or a recess. Alternatively or in addition, the first section 9 and the second section 10 can have different diameters from each other, which leads to a staggered design of the collar 2.

[0041] If available from Figure 3 Best obtained, in a first variant, several first grooves 4 and several second grooves 5 are arranged adjacent to each other. Several first grooves 4 are arranged at a first section 9 of the side surface 3, and several second grooves 5 are arranged at a second section 10 of the side surface 3. In the variant shown, several second grooves 5 are designed such that respective first ends 19 of the several second grooves 5 merge into the lead-in surface 8, and second ends 20 of the respective grooves 5 merge into the several first grooves 4. Depending on the design of the crimping neck 1, the first section 9 and the second section 10 of the side surface 3 may have the same diameter, so that the several first grooves 4 may merge into the several second grooves 5. Several first grooves 4 are preferably arranged adjacent to the distal end 21 of the crimping neck 1, and / or several second grooves 5 are arranged adjacent to the dorsal end 22 of the crimping neck 1.

[0042] If available from Figures 4 to 6 As obtained, the second to fourth variants all include a number of first grooves 4 and a number of second grooves 5, which at least partially overlap with each other, thereby forming a grid pattern 6 in the overlapping area. The displayed number of second grooves 5 are arranged parallel to the longitudinal direction x, thereby forming a grid pattern 6 with the number of first grooves 4, wherein the grid pattern 6 is rectangular relative to the longitudinal direction x. The number of second grooves 5 are not only arranged at the first section 9 of the side surface 3, but also extend from the distal end 21 of the crimping neck 1 toward the dorsal end 22. The displayed number of second grooves 5 protrude above the number of first grooves 4 in the distal direction. This is particularly advantageous for production because it allows the grooves to be added to the side surface 3 in a single production step.

[0043] If available from Figure 5 and Figure 6 It is obtained that, depending on the design, several second grooves 5 can extend along the longitudinal direction x from the first section 9 of the side surface 3 into the second section 10 of the side surface 3. Depending on the field of application, and thus the geometry of the wires of the shielding braid or alternatively the thickness of the foil, several first grooves 4 are at least partially deeper than several second grooves 5, or vice versa. Figures 4 to 6Common to all the variants shown is that a limited number of second grooves 5 in the form of V-shaped or U-shaped grooves along the longitudinal direction x already leads to cable retention and torque resistance similar to a knurled surface. For a cylindrical or hexagonal crimping sleeve 17, six grooves of the first one or up to three first grooves 4 extending from the distal end 21 to the distal end 21 arranged adjacent to the crimping neck 1 already show comparable results with respect to pull-out resistance against torsion compared to a knurled surface. For a given diameter of the ferrule 2, the depth of several first grooves 4 and the depth of several second grooves 5 may be less than the depth of the smallest knurl used for the same diameter.

[0044] To produce by Figures 4 to 7 The several first grooves 4 of any of the variants shown, typically provide a substantially cylindrical blank, which is clamped to a processing machine. In order to clamp the blank to the processing machine, the blank and the finished crimping neck 1 may include a clamping surface 11. The side surface 3 is typically fused into the clamping surface 11 at its back end 22, by which the crimping neck 1 is held during the metal cutting process. The clamping surface 11 is typically designed as a cylindrical or polygonal neck, which has a wider diameter than the collar 2 of the crimping neck 1. The several first grooves 4 arranged in the side surface 3 extend in the circumferential direction and are cut by removing metal from the collar 2 during the first metal cutting process. Good results can be obtained when the several first grooves 4 are cut by means of a tool head, wherein the side surface 3 is rotated relative to the tool head. The several first grooves 4 are designed as annular grooves, which are arranged adjacent to each other in the longitudinal direction x. The several first grooves 4 extend from the distal end 22 of the side surface 3 to the distal end 21 of the side surface 3. In the mounted state, the several first grooves 4 are configured to attach, for example, a shielding braid, mesh or foil and prevent sliding along the longitudinal direction x. Figure 3 A variation is shown in which a number of second grooves 5 are arranged adjacent to a number of first grooves 4. In contrast, Figure 7 A variation is shown in which the plurality of second grooves 5 are arranged to be spaced a distance apart from the plurality of first grooves 4. The gaps between the plurality of second grooves 5 and the plurality of first grooves 4 may be designed as grooves.

[0045] Depend on Figures 4 to 7The several second grooves 5 shown in all the variants shown are made by a second metal cutting process by removing metal from the collar 2. The several first grooves 4 typically have a rounded bottom, while the several second grooves 5 shown have a pointed cross section. Good results can be obtained when the several second grooves 5 are cut by a planing tool. After cutting the several first grooves 4, the several second grooves 5 are typically cut by moving the planing tool relative to the side surface 3, whereby at least one cutting edge of the planing tool penetrates the side surface 3. The several second grooves 5 shown are arranged in the side surface 3, distributed in the circumferential direction. The several second grooves 5 are equally spaced relative to each other and extend in the longitudinal direction x of the collar 2.

[0046] Rather, the words used in the specification are words of description rather than limitation, and it is understood that various changes may be made without departing from the spirit and scope of the disclosure.

[0047] Parts List

[0048] 1Crimp neck

[0049] 2 sets of rings

[0050] 3 Side surface

[0051] 4First groove

[0052] 5Second groove

[0053] 6 Grid Pattern

[0054] 7 Round bottom

[0055] 8Introduction of surface

[0056] 9 First section (side surface)

[0057] 10 Second section (side surface)

[0058] 11 Clamping surface

[0059] 12 Cable Connectors

[0060] 13 Inner conductor (cable)

[0061] 14 Insulation layer (cable)

[0062] 15 Shielding braid (cable)

[0063] 16 Sheath (cable)

[0064] 17 Crimp sleeve

[0065] 18 through holes

[0066] 19 first end portion (second groove)

[0067] 20 second end portion (second groove)

[0068] 21 Distal end (crimp neck)

[0069] 22 Back side end (crimp neck).

Claims

1. A crimping neck (1) comprising a collar (2) made of metal and extending in a longitudinal direction (x), the collar comprising a side surface (3) a. having a plurality of first grooves (4) arranged in the side surface (3), extending in the circumferential direction and made by removing metal from the collar (2) by a first metal cutting process, b. Having several second grooves (5), which are arranged in the side surface (3), distributed in the circumferential direction and extend in the longitudinal direction (x) of the collar (2).

2. The crimping neck (1) according to claim 1, characterized in that: The plurality of first grooves (4) and the plurality of second grooves (5) are arranged to be adjacent to each other or to be spaced apart from each other.

3. The crimping neck (1) according to claim 1 or 2, characterized in that: The plurality of first grooves (4) and the plurality of second grooves (5) at least partially overlap each other, thereby forming a grid pattern (6) in the overlapping area.

4. The crimping neck (1) according to claim 3, characterized in that The grid pattern (6) is a rectangle.

5. The crimping neck (1) according to any one of the preceding claims, characterized in that The plurality of first grooves (4) are at least partially deeper than the plurality of second grooves (5), or vice versa.

6. The crimping neck (1) according to any one of the preceding claims, characterized in that The first grooves (4) have a circular bottom (7), and the second grooves (5) have a pointed cross section.

7. The crimping neck (1) according to any one of the preceding claims, characterized in that The crimping neck (1) comprises a lead-in surface (8) which merges into the side surface (3).

8. The crimping neck (1) according to any one of the preceding claims, characterized in that The plurality of second grooves (5) are made by removing metal from the collar (2) by a second metal cutting or forming process.

9. The crimping neck (1) according to any one of the preceding claims, characterized in that The plurality of second grooves (5) protrude above the plurality of first grooves (4) in the distal direction.

10. The crimping neck (1) according to any one of the preceding claims, characterized in that The plurality of second grooves (5) are arranged rotationally symmetrically in the circumferential direction.

11. The crimping neck (1) according to any one of the preceding claims, characterized in that The side surface (3) merges at its back end into a clamping surface (11), by which the crimping neck (1) is held during the metal cutting process.

12. A cable connector (12) comprising a crimping neck (1) according to any one of the preceding claims and a connector body.

13. A method for producing a crimped neck (1) according to any one of claims 1 to 11, comprising the following steps : a. Provide blanks; b. clamping the blank onto a processing machine via the clamping surface (11); c. in a first metal cutting process, cutting a plurality of first grooves (4) arranged in the side surface (3) and extending in a circumferential direction by removing metal from the collar (2); d. in a second metal cutting process, cutting a plurality of second grooves (5) by removing metal from the collar (2), the plurality of second grooves (5) being arranged in the side surface (3), distributed in the circumferential direction and extending in the longitudinal direction (x) of the collar (2); e. Removing the completed crimped neck (1) from the processing machine.

14. Method for producing a crimped neck (1) according to any one of claims 13, characterised in that The first grooves (4) are cut by means of a cutter head, wherein the side surface (3) is rotated relative to the cutter head, whereby at least one cutting edge of the cutter head penetrates the side surface.

15. Method for producing a crimped neck (1) according to claim 13 or 14, characterised in that The second grooves (5) are cut by a planing tool which is moved along the longitudinal direction (x), whereby at least one cutting edge of the circular tool penetrates the side surface.

16. Method for producing a crimped neck (1) according to any one of claims 13 to 15, characterised in that The first grooves (4) cut by removing metal from the collar (2) in a first metal cutting process are cut before the second grooves (5) are cut by removing metal from the collar (2) in a second metal cutting process, or vice versa.

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