Novel cutting knife and cutting method

Abstract

The invention discloses a novel cutting knife and a cutting method. The novel cutting knife and the cutting method are used for solving the problems that in the prior art, the cutting precision is low, and wires rebound and deform. The cutting knife comprises an installation base body, a collinear driving module and an interactive executing mechanism, the collinear driving module is composed of a first linear driver and a second linear driver which are coaxially arranged, drives two U-shaped linkage assemblies to achieve phase difference motion and is coupled with a horizontal sliding rail pair through a guide sliding groove, and two stations synchronously complete clamping-shearing-releasing actions; the shearing unit adopts a staggered cutting edge design and is combined with an elastic buffer pressing mechanism, so that the smoothness of a notch is effectively ensured and the wire is prevented from being damaged; the cutter adopts an indexable quick-change structure, so that the replacement efficiency is improved; the telescopic adjusting assembly is integrated with a laser displacement sensor to form closed-loop control. Through the combination of mechanical coupling and intelligent control, high-precision and high-efficiency continuous cutting is achieved, and the device is suitable for precision wire machining.

Description

Technical Field

[0001] The present invention relates to the technical field of wire precision processing, and in particular to a novel cutting knife and a cutting method. Background Art

[0002] In the field of inductor coil manufacturing, precise cutting of flat wire (such as rectangular copper wire) is a key process that affects coil performance. However, existing cutting technology has the following prominent problems: The problem of springback during cutting of flat wire is particularly prominent. Due to the large width-to-thickness ratio of flat wire (typically ≥5:1), in traditional cutting processes, when the shear force is suddenly unloaded, the wire section behind the cut will experience significant springback deformation due to the tension of straightening. This springback manifests itself in two main ways: first, a 0.1-0.3mm displacement springback at the cut end surface, making it difficult to control the coil turn spacing during the subsequent winding process; second, a 0.05-0.15mm warping deformation along the narrow edge of the wire, affecting the quality of the inductor coil.

[0003] The problem of poor cutting consistency in dual-station cutting also urgently needs to be addressed. To improve production efficiency, modern inductor production lines generally use dual-station cutting equipment, but the traditional dual-cylinder drive system has obvious technical flaws: First, the cumulative error of the mechanical transmission chain causes the cutting action of the two stations to be out of sync. Second, due to the lack of an effective load balancing mechanism, when there is a difference in wire hardness between the two stations, one side may be incompletely cut and the other side may be overcut, resulting in significant differences in cross-sectional quality.

[0004] Therefore, in view of the deficiencies in the prior art, it is necessary to design a new cutting knife and cutting method to solve the above problems.

[0005] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solution of the present invention and facilitating the understanding of those skilled in the art. It cannot be assumed that the above contents are well known to those skilled in the art simply because they are explained in the background technology of the present invention. Summary of the Invention

[0006] In order to overcome the above-mentioned deficiencies in the prior art, the present invention aims to disclose a new cutting knife and cutting method for solving the problems of wire rebound deformation and poor consistency of multi-station cutting during the manufacturing process of inductor coils.

[0007] The present invention discloses a novel cutting knife, comprising: The mounting base has telescopic adjustment components symmetrically arranged on both sides, so that the mounting base can be adjusted in front and back positions and keep the positions of both sides level; The collinear drive module is composed of a first linear drive and a second linear drive arranged coaxially. The collinear drive module is fixed on the operation side of the installation base to achieve synchronous collinear movement of the two drives; The interactive actuator includes: a first U-shaped linkage component, whose driving end is rigidly connected to the output shaft of the first linear drive. A guiding chute is provided on the vertical arm of the U-shaped frame of this component. This component includes first pressing units symmetrically distributed on the left and right and first shearing units parallel to them, third pressing units and third shearing units parallel to them; a second U-shaped linkage component, whose driving end is rigidly connected to the output shaft of the second linear drive. The top of the U-shaped frame of this component is slidably matched with the guiding chute. This component includes a second pressing unit coaxially arranged with the first pressing unit, a second shearing unit forming an interleaved shearing surface with the first shearing unit, a fourth pressing unit coaxially arranged with the third pressing unit, and a fourth shearing unit forming an interleaved shearing surface with the third shearing unit; the first U-shaped linkage component and the second U-shaped linkage component are dynamically coupled through a horizontal slide rail pair. The two U-shaped components form a phase difference movement under collinear drive to achieve seamless connection of the "clamping - shearing - releasing" actions of the two workstations.

[0008] Preferred technical solution: In the first shearing pair formed by the first shearing unit and the second shearing unit, the offset of the cutting edge line is 0.1 - 0.5 times the narrow width of the wire. The second shearing pair formed by the third shearing unit and the fourth shearing unit has the same offset, which ensures smooth cuts while reducing burr generation.

[0009] Preferred technical solution: Elastic buffer structures are provided on the contact end faces of the first pressing unit and the second pressing unit, and the third pressing unit and the fourth pressing unit to avoid extrusion damage to the wire.

[0010] Preferred technical solution: The tool bodies of the first shearing unit, the second shearing unit, the third shearing unit, and the fourth shearing unit all adopt indexable insert blade structures, and are quickly replaced and installed through T-shaped grooves and positioning pins. The first pressing rod, the second pressing rod, the third pressing rod, and the fourth pressing rod all adopt plug-in quick-change installation structures, which are convenient for maintenance and replacement.

[0011] Preferred technical solution: The telescopic adjustment component is integrated with a laser displacement sensor to form a closed-loop control system with the collinear drive module to ensure cutting accuracy.

[0012] Preferred technical solution: The telescopic adjustment component, the first linear drive, and the second linear drive are one of an electric cylinder, an oil cylinder, and a pneumatic cylinder.

[0013] The present invention also discloses a cutting method for the above-mentioned new cutting tool, including the following steps: S1. Set the initial cutting position through the telescopic adjustment component; S2. The first linear driver and the second linear driver synchronously push the first U-shaped linkage assembly and the second U-shaped linkage assembly to contact the wire materials at two workstations respectively; S3. The first linear driver and the second linear driver continue to push, so that the first shearing unit and the second shearing unit, as well as the third shearing unit and the fourth shearing unit, respectively perform staggered cutting on the wire materials at two workstations. At the same time, the first pressing unit and the second pressing unit, as well as the third pressing unit and the fourth pressing unit, respectively clamp the rear end of the shearing position of the wire materials at two workstations to prevent the wire materials from rebounding; S4. The first linear driver and the second linear driver retract, and the interactive actuator releases the wire material, completing one cutting cycle.

[0014] Due to the application of the above technical solutions, the beneficial effects of the present invention compared with the prior art are as follows: 1) The pressing unit clamps the wire material before shearing to prevent rebounding caused by the release of tension. At the same time, the staggered shearing surface can make the cut surface of the wire material smoother and reduce the port deformation amount.

[0015] 2) The interactive actuator ensures that the cutting actions at two workstations are completely consistent, eliminating mechanical cumulative errors.

[0016] 3) An elastic buffer structure is arranged at the docking part of the pressing unit to avoid extrusion deformation of the wire material. Description of the Drawings

[0017] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required to be used in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to these drawings.

[0018] Figure 1 It is a schematic structural diagram of a novel cutting tool of the present invention; Figure 2 It is a schematic structural diagram of the interactive actuator in the present invention.

[0019] In the above drawings, 1. mounting base; 2. telescopic adjustment assembly; 3. first linear driver; 4. second linear driver; 5. first U-shaped linkage assembly; 51. first pressing unit; 52. first shearing unit; 53. third pressing unit; 54. third shearing unit; 55. guiding chute; 6. second U-shaped linkage assembly; 61. second pressing unit; 62. second shearing unit; 63. fourth pressing unit; 64. fourth shearing unit; 7. horizontal slide rail pair; 8. elastic buffer structure. Detailed Embodiments

[0020] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0021] It should be noted that the terms "first", "second", etc. in the specification, claims and the above-mentioned drawings of this application are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so as to describe the embodiments of this application here. In addition, the terms "include" and "have" and their synonyms are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0022] In this application, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit that the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation.

[0023] Moreover, in addition to being able to represent an orientation or positional relationship, some of the above-mentioned terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present invention can be understood according to specific circumstances.

[0024] In addition, the terms "install", "set", "provided with", "connect", "connected", "socketed", "fitted" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there is internal communication between two devices, elements or components. Another example is that "fitted" can be completely close-fitting or partially close-fitting. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in the present invention can be understood according to specific circumstances.

[0025] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will refer to the drawings and combine the embodiments to detail this application.

[0026] Embodiment: Such asFigure 1 and Figure 2 As shown, the present invention discloses a novel cutting knife, and its core structure includes an installation base 1, a collinear drive module, and an interactive execution mechanism. The following will specifically describe the main components of the above-mentioned present invention: As Figure 1 and Figure 2 shown, telescopic adjustment components 2 are symmetrically arranged on both sides of the installation base 1, and the position is monitored in real time by a laser displacement sensor to ensure the cutting accuracy. The collinear drive module is composed of a first linear driver 3 and a second linear driver 4 arranged coaxially, both of which are servo electric cylinders, and synchronous movement is achieved through a closed-loop control system.

[0027] As Figure 1 and Figure 2 shown, the interactive execution mechanism is composed of a first U-shaped linkage component 5 and a second U-shaped linkage component 6. The driving end of the first U-shaped linkage component 5 is rigidly connected to the output shaft of the first linear driver 3, and a guiding chute 55 is provided on the vertical arm of its U-shaped frame. The first U-shaped linkage component 5 includes a first pressing unit 51, a first shearing unit 52, a third pressing unit 53, and a third shearing unit 54; the driving end of the second U-shaped linkage component 6 is rigidly connected to the output shaft of the second linear driver 4, and the top of its U-shaped frame is slidably matched with the guiding chute 55. The second U-shaped linkage component 6 includes a second pressing unit 61, a second shearing unit 62, a fourth pressing unit 63, and a fourth shearing unit 64. The two U-shaped components are dynamically coupled through a horizontal slide rail pair 7 to ensure synchronous movement. In the first shearing pair formed by the first shearing unit 52 and the second shearing unit 62, the working surfaces of the two shearing units are arranged in parallel and misaligned, and the offset of the cutting edge line is 0.2 times the width of the narrow side of the wire. The second shearing pair formed by the third shearing unit 54 and the fourth shearing unit 64 has the same offset. Elastic buffer structures 8 are provided on the contact end faces of the first pressing unit 51 and the second pressing unit 61, and the third pressing unit 53 and the fourth pressing unit 63.

[0028] As Figure 1 and Figure 2 shown, the cutting method of the novel cutting knife: Initial setting:: Set the cutting position through the telescopic adjustment component 2, and the laser displacement sensor feeds back data in real time to form a closed-loop control.

[0029] Clamping stage: The first linear driver 3 and the second linear driver 4 are synchronously advanced, so that the first pressing unit 51 and the second pressing unit 61, and the third pressing unit 53 and the fourth pressing unit 63 respectively clamp the rear ends of the wire at the two workstations, and the elastic buffer structure 8 avoids extrusion damage.

[0030] Shearing stage: The first linear driver 3 and the second linear driver 4 continue to advance. The first shearing unit 52 and the second shearing unit 62, as well as the third shearing unit 54 and the fourth shearing unit 64, respectively complete the shearing of the corresponding wire rods by using staggered cutting edges, and the cut is smooth without burrs.

[0031] Releasing stage: The first linear driver 3 and the second linear driver 4 retract, and the pressing unit releases the wire rod to complete a cutting cycle.

[0032] As Figure 1 and Figure 2 shown, the tool bodies of the first shearing unit 52, the second shearing unit 62, the third shearing unit 54, and the fourth shearing unit 64 all adopt indexable insert blade structures, and are quickly replaced and installed through T-slot cooperation with positioning pins. The first pressing rod 51, the second pressing rod 61, the third pressing rod 53, and the fourth pressing rod 63 all adopt plug-in quick replacement and installation structures, making their replacement and adjustment more convenient.

[0033] Through mechanical structure optimization, intelligent control, and modular design, the present invention systematically solves the problems of wire springback, poor consistency, and low cutting efficiency in flat wire cutting, and is applicable to the fields of high-end electronic components and precision motor manufacturing, with significant industrialization value.

[0034] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A new type of cutting knife, characterized in that, Including: An installation base body (1) with telescopic adjustment components (2) symmetrically arranged on both sides thereof; A collinear driving module composed of a first linear driver (3) and a second linear driver (4) arranged coaxially, and the collinear driving module is fixed on the operating side of the installation base body (1); An interactive execution mechanism, including: a first U-shaped linkage component (5), the driving end of which is rigidly connected to the output shaft of the first linear driver (3). A guiding chute (55) is provided on the vertical arm of the U-shaped frame of this component. This component includes first pressing units (51) symmetrically distributed on the left and right and a first shearing unit (52) parallel thereto, a third pressing unit (53) and a third shearing unit (54) parallel thereto; a second U-shaped linkage component (6), the driving end of which is rigidly connected to the output shaft of the second linear driver (4). The top of the U-shaped frame of this component is slidably matched with the guiding chute (55). This component includes a second pressing unit (61) coaxially arranged with the first pressing unit (51), a second shearing unit (62) forming an interleaved shearing surface with the first shearing unit (52), a fourth pressing unit (63) coaxially arranged with the third pressing unit (53), and a fourth shearing unit (64) forming an interleaved shearing surface with the third shearing unit (54); the first U-shaped linkage component (5) and the second U-shaped linkage component (6) are dynamically coupled through a horizontal slide rail pair (7).

2. A novel cutting tool according to claim 1, characterized in that: In the first shearing pair formed by the first shearing unit (52) and the second shearing unit (62), the working surfaces of the two shearing units are arranged in parallel and offset, and the offset amount of the cutting edge line is 0.1 - 0.5 times the narrow surface width of the wire. The second shearing pair formed by the third shearing unit (54) and the fourth shearing unit (64) has the same offset amount.

3. A novel cutting tool according to claim 1, wherein: Elastic buffer structures (8) are provided on the contact end faces of the first pressing unit (51) and the second pressing unit (61) as well as the third pressing unit (53) and the fourth pressing unit (63).

4. A novel cutting tool according to claim 1, characterized in that: The tool bodies of the first shearing unit (52), the second shearing unit (62), the third shearing unit (54), and the fourth shearing unit (64) all adopt indexable insert blade structures, and quick replacement installation is realized through T-shaped grooves and positioning pins. The first pressing rod (51), the second pressing rod (61), the third pressing rod (53), and the fourth pressing rod (63) all adopt plug-in quick replacement installation structures.

5. A novel cutting tool according to claim 1, characterized in that: The telescopic adjustment component (2) is integrated with a laser displacement sensor to form a closed-loop control system with the collinear driving module.

6. A novel cutting tool according to claim 1, characterized in that: The telescopic adjustment component (2), the first linear driver (3), and the second linear driver (4) are one of an electric cylinder, an oil cylinder, and a pneumatic cylinder.

7. A cutting method based on the novel cutting tool according to any one of claims 1-6, characterized in that, Including the following steps: S1. Set the initial cutting position through the telescopic adjustment component (2); S2. The first linear driver (3) and the second linear driver (4) synchronously push the first U-shaped linkage component (5) and the second U-shaped linkage component (6) to contact the wires at two workstations respectively; S3. The first linear actuator (3) and the second linear actuator (4) continue to advance, so that the first shearing unit (52) and the second shearing unit (62), and the third shearing unit (54) and the fourth shearing unit (64) respectively perform staggered cutting on the wire rods at the two workstations. At the same time, the first pressing unit (51) and the second pressing unit (61), and the third pressing unit (53) and the fourth pressing unit (63) respectively clamp the rear ends of the shearing positions of the wire rods at the two workstations; S4. The first linear actuator (3) and the second linear actuator (4) retract, and the interactive actuator releases the wire rod, completing one cutting cycle.

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