Pulse electromagnetic homogenization treatment device for broach

Abstract

A pulse electromagnetic homogenization treatment device for a broach comprises a base, the base comprises a workbench, a machining coil barrel is installed on the upper end face of the workbench through a fixing clamp, the machining coil barrel is provided with a machining cavity for machining the broach in the direction of a center shaft, the machining cavity is arranged in a left-right penetrating mode, and a voltage regulating power source and a variable frequency regulator are arranged below the workbench. And the voltage-regulating power supply is sequentially connected with the variable-frequency regulator and the processing coil barrel through wires. According to the pulse electromagnetic homogenization treatment device for the broach, the voltage regulating power supply and the variable-frequency regulator are used for controlling the processing coil barrel and the processing cavity to form an alternating magnetic field, and when the broach passes through the processing cavity, the broach is magnetized to be in a nearly saturated state, so that internal defects of a broach material are promoted to be unbound, and the dislocation density distribution form is changed; crack sources are reduced, internal energy of crack initiation and expansion is reduced, change of the structure state and residual stress is caused, the service life of the broach is effectively prolonged, the reliability of the broach is effectively improved, and technical economic and social benefits are promoted to be improved.

Description

Technical Field

[0001] This utility model relates to the field of metal material processing technology, and in particular to a pulse electromagnetic homogenization processing device for a broach. Background Technology

[0002] Broaches are indispensable cutting tools in the automotive, construction machinery, wind turbine, and aerospace industries. As form tools, broaches complete the machining process in a single broaching operation, ensuring shape accuracy and surface quality. They are primarily used for machining long workpieces with small diameters. Commercially available broaches often have poor rigidity. Due to their own weight, centrifugal force during high-speed rotation, and cutting forces during turning, broaches are prone to bending and deformation. Being single-use products, broaches are used in large quantities, are expensive, have short actual service lives, and result in significant material waste.

[0003] Meanwhile, because the broaches vary in length and have a relatively long size and structure, the time for each pass is long, resulting in greater tool wear, which affects the geometric accuracy of the broach. Utility Model Content

[0004] This utility model addresses the need for a pulsed electromagnetic homogenization treatment device with good wear resistance and long service life.

[0005] This utility model provides the following technical solution: a pulse electromagnetic homogenization treatment device for a broach, including a base, the base including a worktable, a processing coil cylinder is installed on the upper surface of the worktable by a fixing clamp, the processing coil cylinder is provided with a processing cavity for processing the broach along the central axis, the processing cavity is arranged through the left and right, a voltage regulating power supply and a frequency converter are provided below the worktable, the voltage regulating power supply is connected to the frequency converter and the processing coil cylinder in sequence through wires.

[0006] Compared with the prior art, the advantages of this utility model are as follows: By controlling the processing coil cylinder with a voltage-regulating power supply and a variable frequency regulator, an alternating magnetic field is formed in the processing cavity. When the broach passes through the processing cavity, the broach is magnetized to a near-saturation state. Under the action of the magnetic field, the internal defects of the broach material are unpacked, and the dislocation density distribution is changed. By adjusting its micro-defect distribution, crack sources are reduced, and the internal energy for crack initiation and propagation is reduced, causing changes in the microstructure and residual stress. In addition, this device can process at room temperature without changing the appearance and size. It has the advantages of high efficiency, low energy consumption and no pollution, which can effectively improve the service life and reliability of the broach, and promote the improvement of technical, economic and social benefits.

[0007] In some embodiments, the processing coil tube is composed of an excitation coil winding, and the processing coil tube is treated with polyester enameled wire. Through the aforementioned improvement, the polyester enameled wire enamel film has excellent electrical insulation properties and high breakdown voltage. The excitation coil can precisely control the magnetic field strength and distribution by changing the magnitude and direction of the input current, thereby meeting the dynamic requirements under different working conditions.

[0008] In some embodiments, a magnetic shield is installed on the workbench. The magnetic shield includes a vertically penetrating accommodating cavity, and the processing coil is disposed in the accommodating cavity. Through the above improvement, the outward diffusion of the magnetic field generated by the processing coil can be reduced, the magnetic field can be confined to the target working area, the leakage magnetic loss can be reduced, thereby improving the energy transmission efficiency. At the same time, the magnetic shield can block the interference of external stray magnetic fields on the processing coil, and improve the operational stability of the equipment.

[0009] In some embodiments, the magnetic shield includes a passage portion, which is respectively disposed at the left and right ends of the magnetic shield. The passage portion is provided with a clearance hole along the central axis direction. The clearance hole has the same diameter as the processing cavity. Through the above improvement, the setting of the clearance hole allows the broach to be smoothly inserted and removed from the processing cavity. At the same time, the clearance hole has the same diameter as the processing cavity, which prevents the shielding effect of the magnetic shield from weakening if the diameter of the clearance hole is too large, and also prevents the diameter of the clearance hole from being too small, which would prevent the broach from passing through.

[0010] In some embodiments, the workbench is provided with a connection port for passing wires through, and the improved design of the connection port makes the wire lines more orderly.

[0011] In some embodiments, clamping assemblies are symmetrically provided at both ends of the processing coil cylinder. The clamping assemblies include a bracket, clamping members, sliders, and guide rails. The bracket includes an extension portion that extends into the processing cavity. The clamping members are installed at the outer ends of the extension portions. The left and right clamping members clamp the left and right ends of the broach. The guide rail is horizontally arranged on the worktable. The slider is fixed to the lower end of the bracket and is fitted onto the guide rail. The bracket moves horizontally on the guide rail. Through this improvement, the clamping members located at both ends of the processing coil cylinder can be adjusted in length according to the length of the broach. At the same time, the clamping members can move the broach by pulling the bracket through the cooperation of the slider and the guide rail, making the movement of the broach more stable and improving the magnetization effect of the broach.

[0012] In some embodiments, a sponge pad is provided at the contact portion between the clamping member and the puller. Through the aforementioned improvement, the sponge pad can prevent damage to the puller during the clamping process.

[0013] In some embodiments, the bracket includes symmetrically arranged stabilizing legs, with a slider fixed to the lower end of the stabilizing legs. This improvement prevents the bracket from swaying left and right by providing stabilizing legs.

[0014] In some embodiments, both the clamping member and the extension portion are made of non-magnetic materials. Through the aforementioned improvement, the magnetic field can pass through the non-magnetic material, and its impact on the magnetization process of the broach is negligible.

[0015] In some embodiments, the fixing clamp is made of a non-magnetic material. With the aforementioned improvement, the magnetic field can pass through the non-magnetic material, and its impact on the magnetization process of the broach is negligible.

[0016] Beneficial effects:

[0017] This invention provides a pulsed electromagnetic homogenization treatment device for broaches. A processing coil is controlled by a voltage-regulated power supply and a variable frequency controller, creating an alternating magnetic field within the processing cavity. When the broach passes through the processing cavity, it is magnetized to near saturation. Under the influence of the magnetic field, internal defects in the broach material are dislodged, altering the dislocation density distribution. By adjusting the distribution of micro-defects, crack initiation and propagation energy are reduced, leading to changes in the microstructure and residual stress. Furthermore, this device can process broaches at room temperature without altering their dimensions. It boasts advantages such as high efficiency, low energy consumption, and no pollution, effectively improving the service life and reliability of broaches and enhancing technical, economic, and social benefits. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 For the present utility model Figure 1 A magnified structural diagram at point A;

[0021] Figure 3 This is a structural schematic diagram of the present invention from another angle;

[0022] Figure 4 This is a schematic diagram of the structure of the processing coil tube according to this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the magnetic shielding body of this utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the fixing clamp of this utility model;

[0025] Figure 7 This is a schematic diagram of the clamping component of this utility model.

[0026] In the diagram: 1. Machining coil tube; 1.1. Machining cavity; 2. Fixing fixture; 2.1. Arc-shaped part; 3. Magnetic shield; 3.1. Receiving cavity; 3.2. Passing part; 3.3. Clearance hole; 4. Base; 4.1. Worktable; 4.2. Connection port; 5. Wire; 6. Regulated power supply; 7. Variable frequency regulator; 8. Clamping assembly; 8.1. Bracket; 8.1.1. Extension part; 8.1.2. Stabilizing foot; 8.2. Clamping component; 8.2.1. Sponge pad; 8.3. Slider; 8.4. Slide rail. Detailed Implementation

[0027] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0028] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0030] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The illustrations only show the components related to this application and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0031] Additionally, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that practice can be carried out without these specific details.

[0032] The technical solutions provided by the various embodiments of this application are described below with reference to the accompanying drawings.

[0033] Please see Figure 1-6 As shown in this embodiment: a pulse electromagnetic homogenization treatment device for a broach includes a base 4, the base 4 includes a worktable 4.1, a processing coil 1 is mounted on the upper surface of the worktable 4.1 by a fixing clamp 2, the processing coil 1 is provided with a processing cavity 1.1 for processing the broach along the central axis direction, the processing cavity 1.1 is arranged through the left and right sides, a voltage regulating power supply 6 and a frequency converter 7 are provided below the worktable 4.1, the voltage regulating power supply 6 is connected to the frequency converter 7 and the processing coil 1 in sequence through wires 5.

[0034] The processing coil 1 is controlled by a voltage regulator 6 and a frequency converter 7, forming an alternating magnetic field within the processing cavity 1.1. When the broach passes through the processing cavity 1.1, it is magnetized to near saturation. Under the influence of the magnetic field, the internal defects of the broach material are dislodged, causing a change in the dislocation density distribution. By adjusting the distribution of its micro-defects, crack initiation and propagation energy are reduced, resulting in changes in the microstructure and residual stress. Furthermore, this device can process at room temperature without altering the external dimensions. It has the advantages of high efficiency, low energy consumption, and no pollution, effectively improving the service life and reliability of the broach and promoting technological, economic, and social benefits.

[0035] It should be noted that the fixing fixture 2 includes an arc-shaped part 2.1, and there are two fixing fixtures 2, which are respectively provided at both ends of the processing coil tube 1, and the two ends of the processing coil tube 1 are respectively mounted on the arc-shaped part 2.1 of the fixing fixture 2 on both sides.

[0036] In some embodiments, such as Figure 4 As shown, the processing coil cylinder 1 is composed of excitation coil windings, and the processing coil cylinder 1 is treated with polyester enameled wire. It should be noted that the enamel film of polyester enameled wire has excellent electrical insulation properties and high breakdown voltage. The excitation coil can precisely control the magnetic field strength and distribution by changing the magnitude and direction of the input current to meet the dynamic requirements under different working conditions.

[0037] In some embodiments, such as Figures 4-5As shown, a magnetic shield 3 is installed on the workbench 4.1. The magnetic shield 3 includes a vertically penetrating accommodating cavity 3.1. The processing coil cylinder 1 is disposed in the accommodating cavity 3.1. It should be noted that this can reduce the outward diffusion of the magnetic field generated by the processing coil cylinder 1, confine the magnetic field to the target working area, reduce leakage magnetic loss, and thus improve energy transmission efficiency. At the same time, the magnetic shield 3 can block the interference of external stray magnetic fields on the processing coil cylinder 1, and improve the stability of equipment operation.

[0038] In some embodiments, such as Figures 1-5 As shown, the magnetic shield 3 includes a passage portion 3.2, which is respectively provided at the left and right ends of the magnetic shield 3. The passage portion 3.2 is provided with a clearance hole 3.3 along the central axis direction. The clearance hole 3.3 has the same diameter as the processing cavity 1.1. It should be noted that the setting of the clearance hole 3.3 allows the broach to be smoothly inserted and removed from the processing cavity 1.1. At the same time, the clearance hole 3.3 has the same diameter as the processing cavity 1.1 to prevent the shielding effect of the magnetic shield 3 from being weakened if the diameter of the clearance hole 3.3 is too large, and also to prevent the broach from being unable to pass through if the diameter of the clearance hole 3.3 is too small.

[0039] In some embodiments, such as Figures 1-2 As shown, the workbench 4.1 is provided with a connection port 4.2 for passing the wire 5 through. It should be noted that the connection port 4.2 makes the wire 5 more orderly.

[0040] In some embodiments, such as Figures 1-3 As shown, clamping assemblies 8 are symmetrically provided at both ends of the processing coil cylinder 1. The clamping assembly 8 includes a bracket 8.1, clamping parts 8.2, sliders 8.3, and guide rails. The bracket 8.1 includes an extension part 8.1.1 that extends into the processing cavity 1.1. The clamping parts 8.2 are installed on the outer end of the extension part 8.1.1. The left and right clamping parts 8.2 clamp the left and right ends of the broach. The guide rail is horizontally arranged on the worktable 4.1. The slider 8.3 is fixed to the lower end of the bracket 8.1 and is fitted on the guide rail. The bracket 8.1 moves horizontally on the guide rail. It should be noted that the clamping parts 8.2 located at both ends of the processing coil cylinder 1 can be adjusted in length according to the length of the broach. At the same time, the clamping parts 8.2 can move the broach by pulling the bracket 8.1 through the cooperation of the slider 8.3 and the guide rail, making the movement of the broach more stable and improving the magnetization effect of the broach.

[0041] In some embodiments, such as Figure 7 As shown, the contact part between the clamping member 8.2 and the puller is provided with a sponge pad 8.2.1. It should be noted that the sponge pad 8.2.1 is provided to prevent the clamping member 8.2 from damaging the puller during the clamping process.

[0042] In some embodiments, such as Figures 1-3As shown, the bracket 8.1 includes symmetrically arranged stabilizing legs 8.1.2, and the slider 8.3 is fixed to the lower end of the stabilizing legs 8.1.2. It should be noted that the stabilizing legs 8.1.2 are used to prevent the bracket 8.1 from swaying left and right.

[0043] In some embodiments, such as Figure 1 As shown, both the clamping part 8.2 and the extension part 8.1.1 are made of non-magnetic materials. It should be noted that the magnetic field can pass through non-magnetic materials and its influence on the magnetization process of the broach is negligible.

[0044] In some embodiments, such as Figure 1 As shown, the fixing clamp 2 is made of non-magnetic material. It should be noted that the magnetic field can pass through non-magnetic material and its effect on the magnetization process of the broach is negligible.

[0045] Workflow: Measure the specific data of the broach to be processed, clamp both ends of the broach onto the clamping member 8.2, turn on the voltage regulating power supply 6, input the pre-set process parameters to the variable frequency regulator 7, pull the left bracket 8.1 so that the two side brackets 8.1 slide along the slide rail 8.4 from left to right, driving the broach from left to right through the processing cavity 1.1 of the processing coil cylinder 1, thereby completing the overall modification of the broach.

[0046] The same or similar parts between the various embodiments in this specification can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments.

[0047] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A pulse electromagnetic homogenization treatment device for a broach, comprising a base (4), characterized in that: The base (4) includes a workbench (4.1). A machining coil cylinder (1) is mounted on the upper surface of the workbench (4.1) by a fixing clamp (2). The machining coil cylinder (1) has a machining cavity (1.1) for machining a broach along the central axis. The machining cavity (1.1) is arranged through the left and right sides. A voltage regulating power supply (6) and a variable frequency regulator (7) are provided below the workbench (4.1). The voltage regulating power supply (6) is connected to the variable frequency regulator (7) and the machining coil cylinder (1) in sequence through a wire (5).

2. The pulse electromagnetic homogenization device for a broach according to claim 1, characterized in that: The processing coil tube (1) is composed of excitation coil windings, and the processing coil tube (1) is treated with polyester enameled wire.

3. The pulse electromagnetic homogenization device for a broach according to claim 1, characterized in that: A magnetic shield (3) is installed on the workbench (4.1). The magnetic shield (3) includes a vertically through cavity (3.1). The processing coil tube (1) is disposed in the cavity (3.1).

4. The pulse electromagnetic homogenization device for a broach according to claim 3, characterized in that: The magnetic shield (3) includes a passage portion (3.2), which is respectively provided at the left and right ends of the magnetic shield (3). The passage portion (3.2) is provided with a clearance hole (3.3) along the central axis direction. The clearance hole (3.3) is equal in diameter to the processing cavity (1.1).

5. The pulse electromagnetic homogenization device for a broach according to claim 1, characterized in that: The workbench (4.1) is provided with a connection port (4.2) for the wire (5) to pass through.

6. The pulse electromagnetic homogenization device for a broach according to claim 1, characterized in that: The processing coil cylinder (1) is symmetrically provided with clamping assemblies (8) at both ends. The clamping assembly (8) includes a bracket (8.1), a clamping member (8.2), a slider (8.3), and a guide rail. The bracket (8.1) includes an extension portion that extends into the processing cavity (1.1). 8.1.1), the clamping member (8.2) is mounted on the extending portion ( The outer end of 8.1.1) is clamped by the left and right clamping members (8.2) on both sides, the guide rail is horizontally arranged on the worktable (4.1), the slider (8.3) is fixed to the lower end of the bracket (8.1), the slider (8.3) is fitted on the guide rail, and the bracket (8.1) moves horizontally on the guide rail.

7. The pulse electromagnetic homogenization treatment device for a broach according to claim 6, characterized in that: the clamping member (8.2) and the broach contact portion are provided with a sponge pad (8.2.1).

8. The pulse electromagnetic homogenization device for a broach according to claim 6, characterized in that: the bracket (8.1) includes symmetrically arranged stabilizing legs (8.1.2), and the slider (8.3) is fixed to the lower end of the stabilizing legs (8.1.2).

9. The pulse electromagnetic homogenization device for a broach according to claim 6, characterized in that: Both the clamping member (8.2) and the extension portion (8.1.1) are made of non-magnetic materials.

10. The pulse electromagnetic homogenization device for a broach according to claim 1, characterized in that: The fixing clamp (2) is made of non-magnetic material.

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