CN110788559B - Micro-texture processing equipment for surface of metal plate - Google Patents
Micro-texture processing equipment for surface of metal plate Download PDFInfo
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- CN110788559B CN110788559B CN201910997529.8A CN201910997529A CN110788559B CN 110788559 B CN110788559 B CN 110788559B CN 201910997529 A CN201910997529 A CN 201910997529A CN 110788559 B CN110788559 B CN 110788559B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P9/00—Treating or finishing surfaces mechanically, with or without calibrating, primarily to resist wear or impact, e.g. smoothing or roughening turbine blades or bearings; Features of such surfaces not otherwise provided for, their treatment being unspecified
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
- B21D31/06—Deforming sheet metal, tubes or profiles by sequential impacts, e.g. hammering, beating, peen forming
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Abstract
The invention discloses a micro-texture processing device for the surface of a metal plate, which comprises a processing box body, a clamping mechanism and an electromagnetic accelerating mechanism, wherein an inner cavity with the same shape as the processing plane of the metal plate to be processed is arranged in the processing box body; the clamping mechanism clamps and fixes the metal plate to be processed on the top of the processing box body; the electromagnetic accelerating mechanism comprises a pulse spiral coil and a pulse power supply, and the pulse spiral coil is surrounded on the outer side wall of the processing box body; in the vertical direction, the pulse spiral coil is positioned above the position of a steel ball which is placed in a static state in the processing channel. The micro-texture processing equipment adopts a brand-new processing technology, and has the advantages of simple structure, low processing cost, high processing efficiency and the like.
Description
Technical Field
The invention relates to workpiece surface processing equipment, in particular to micro-texture processing equipment for the surface of a metal plate.
Background
With the rapid development of modern industrial technology, the requirements of various industries on the safety and reliability performance and the service life of mechanical equipment are higher and higher; generally, various mechanical equipments are composed of a plurality of parts, so the physical and mechanical properties of the parts directly affect the performance and service life of the mechanical equipments. Therefore, in order to improve the mechanical properties of various parts, it is necessary to further perform a strengthening process on the surface of the parts after the parts are molded, and to change the properties of the parts in terms of microstructure.
In the prior art, there are many ways of surface treatment of a workpiece: mechanical grinding, chemical treatment, surface heat treatment, surface spraying and the like, wherein the treatment modes improve the surface mechanical property of the workpiece in different directions and are beneficial to prolonging the service life of the workpiece. Different from the conventional processing technology, the prior art provides a processing technology for texturing the surface of a workpiece, and the surface micro-texturing technology is a processing technology for processing micro-structures such as pits, bulges and the like on the surface of a mechanical part by using a special processing method so as to improve the surface tribological performance of the part; for example, the invention application with application publication number CN 109732200 a discloses a micro-texture laser processing auxiliary device and a micro-texture laser processing method, and the invention patent with publication number CN 104551701B discloses a composite micro-texture guide rail.
In both of the above microtexturing techniques, the microtexture formation requires melting or ablation by laser, wherein there are disadvantages: the micro texture is processed by adopting a laser melting or ablation mode, so that the cost is higher and the processing efficiency is low.
Disclosure of Invention
The invention aims to overcome the existing problems and provides micro-texture processing equipment for the surface of a metal plate, which adopts a brand-new processing technology and has the advantages of simple structure, lower processing cost, high processing efficiency and the like.
The purpose of the invention is realized by the following technical scheme:
a micro-texture processing device for the surface of a metal plate comprises a processing box body, a clamping mechanism and an electromagnetic accelerating mechanism, wherein,
an inner cavity with the same shape as a processing plane of a metal plate to be processed is arranged in the processing box body, a plurality of tightly arranged straight circular tubes are arranged in the inner cavity, the inner cavities of the straight circular tubes form processing channels, and a steel ball for high-speed impact processing is arranged in each processing channel;
the clamping mechanism clamps and fixes the metal plate to be processed at the top of the processing box body, and the processing plane of the metal plate to be processed faces downwards and directly faces to the plurality of processing channels below;
the electromagnetic acceleration mechanism comprises a pulse spiral coil used for generating a magnetic field by electrifying and a pulse power supply used for providing high-voltage pulse current, the pulse spiral coil surrounds the outer side wall of the processing box body, and the direction of the magnetic field formed inside the pulse spiral coil after electrification is the same as the vertical extending direction of the processing channel; in the vertical direction, the pulse spiral coil is positioned above the position of a steel ball which is placed in a static state in the processing channel.
The working principle of the micro-texture processing equipment is as follows:
when the processing box works, the steel balls are respectively arranged in the processing channels of the straight round tubes, and then metal plates to be processed (metal plates, such as valve plates, guide rails and other parts with high requirements on the physical properties of the surfaces) are clamped at the top of the processing box body through the clamping mechanism, so that the surfaces to be processed face downwards and face the processing channels. The pulse power supply is switched on, so that high-voltage pulse current flows through the pulse spiral coil, a strong magnetic field is generated around the pulse spiral coil in the process, and the pulse spiral coil is positioned above the steel ball, so that the magnetic field generated by the pulse spiral coil is equivalent to an invisible strong magnet suspended right above the steel ball, and the steel ball is attracted to move upwards in an accelerated manner.
Furthermore, after being accelerated by magnetic force, the steel balls move upwards at high speed until impacting on the metal plate part positioned at the top of the processing channel, the steel balls respectively impact on different positions of the processing surface of the metal plate part, so that miniature pits are generated at different positions of the surface of the metal plate part at the same time, and the pits form a micro-texture structure.
In addition, before the steel ball is close to the inside of the pulse spiral coil, the power supply is cut off, the magnetic field disappears (the interference of the magnetic field to the steel ball during the rear-section movement is avoided), and at the moment, the steel ball can still move upwards at a high speed until the steel ball impacts the metal plate. After the steel balls impact the metal plate, the steel balls fall down along the machining channel under the action of gravity and rebound force and return to the bottom of the machining channel. Switching on the power supply again to ensure that the steel balls after the falling back obtain the driving force again, move upwards again, impact on the processing surface of the metal plate at a high speed and then fall back again; and circulating in sequence to realize the strengthening processing of the surface of the metal plate until the processing is finished.
In a preferred embodiment of the present invention, at least two pulse spiral coils are arranged and vertically surround the outer side wall of the processing box; the pulse spiral coils are connected to a pulse power supply in parallel, and a working switch is arranged in a circuit of each pulse spiral coil. Above-mentioned structure sets up a plurality of pulse spiral coil that connect in parallel, and in the course of working, from up switching on in proper order down, the magnetic field that generates in proper order can loop through a plurality of electromagnetic fields like this and accelerate the steel ball to reach higher process velocity.
According to a preferable scheme of the invention, at least two steel balls are placed in each machining channel, so that multiple impacts can be realized successively at the same machining position of the surface of the metal plate under single acceleration, and the machining efficiency can be further improved.
Preferably, the diameter of the steel ball is 0.5-6 mm.
According to a preferable scheme of the invention, the clamping mechanism comprises a clamping bracket and fastening screws, wherein the clamping bracket is positioned on the outer side of the processing box body and is provided with a plurality of clamping channels; in a clamping state, the edge of the metal plate to be processed is placed in the clamping channel, and the fastening screw extends into the clamping channel to fix the metal plate; the planes where the clamping channels are located above the tops of the straight circular tubes.
Preferably, the bottom of the clamping bracket is fixedly connected with the bottom of the processing box body through a fixing bolt, so that the whole strengthening processing equipment is more compact in structure.
In a preferred embodiment of the present invention, the processing tank is made of a non-magnetic material. In practical application, aluminum material or other high-strength non-metallic materials can be selected as the material.
Compared with the prior art, the invention has the following beneficial effects:
1. the micro-texture processing equipment can simultaneously carry out micro-texture processing on the whole processing surface of the metal plate and has higher efficiency.
2. The invention adopts a brand new processing technology, and the steel ball can obtain a huge function to impact the metal plate by the acceleration of the electromagnetic field, so that a micro pit is generated on the processing surface, and the processing cost is lower and the manufacturing cost of equipment is not high.
3. Due to the fixed processing channel, different steel balls are responsible for processing at different positions, and the expected effect and a relatively uniform micro-texture structure can be directly obtained.
4. Compared with the laser melting or ablation mode, the processing equipment provided by the invention can process microtexture on the surface of the sheet metal part, and can obtain the following good technical effects: because the steel balls impact the surface of the metal plate at a high speed to generate the micro pits in an extrusion mode, in the process of gradually forming the pits, the steel balls and the positions nearby can generate residual stress layers under the action of extrusion, and based on the residual stress layers, the performances of hardness, corrosion resistance and the like of the surface of the metal plate can be improved.
5. Besides the surface micro-texture processing, the equipment can also be used for carrying out maintenance work such as cleaning and derusting on the surface of the metal plate, and simultaneously, the hardness of the surface of the metal plate is improved, the corrosion resistance effect of the metal plate is improved, and the wear resistance of the metal plate is improved.
Drawings
Fig. 1 to 3 are sectional views of one embodiment of the microtexture processing apparatus for metal plate surface according to the present invention, in which fig. 1 is a sectional view of a lower pulse spiral coil that is energized to attract a steel ball to move upward; FIG. 2 is a cross-sectional view of the steel ball positioned inside the lower pulse spiral coil, at which time the lower pulse spiral coil is powered off and the upper pulse spiral coil is powered on; fig. 3 is a cross-sectional view of the steel ball striking the surface of the sheet metal part ready for dropping, when both pulse spiral coils are de-energized.
Fig. 4 is a schematic perspective view of one embodiment of the microtexturing apparatus for metal plate surface according to the present invention.
Fig. 5 is a cross-sectional view of another embodiment of the microtexturing apparatus for sheet metal surfaces of the present invention.
Detailed Description
In order to make those skilled in the art understand the technical solutions of the present invention well, the following description of the present invention is provided with reference to the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.
Example 1
Referring to fig. 1 to 4, the microtexture processing apparatus for a surface of a metal plate in this embodiment includes a processing box 1, a clamping mechanism, and an electromagnetic accelerating mechanism, wherein an inner cavity (a square metal plate a is taken as an example in this embodiment, and may be of other shapes, such as a long strip shape, of course) having a shape the same as that of a processing plane of the metal plate a to be processed is provided in the processing box 1, a plurality of straight circular tubes 2 arranged closely are provided in the inner cavity, the inner cavities of the straight circular tubes 2 form processing channels, and each processing channel is provided with a steel ball for high-speed impact processing; the clamping mechanism clamps and fixes the to-be-processed metal plate a at the top of the processing box body 1, and the processing plane of the to-be-processed metal plate a faces downwards and directly faces to a plurality of processing channels below; the electromagnetic acceleration mechanism comprises a pulse spiral coil 3 for generating a magnetic field by electrifying and a pulse power supply for providing high-voltage pulse current, wherein the pulse spiral coil 3 is wound on the outer side wall of the processing box body 1, and the direction of the magnetic field formed inside the pulse spiral coil 3 after electrification is the same as the vertical extending direction of the processing channel; in the vertical direction, the pulse spiral coil 3 is located above the position of a steel ball (in this embodiment, a magnetic metal ball) placed in a static state in the machining passage.
Referring to fig. 1-4, the number of the pulse spiral coils 3 is two, and the pulse spiral coils are wound around the outer side wall of the processing box 1 along the vertical direction; the pulse spiral coils 3 are connected to a pulse power supply in parallel, and a working switch is arranged in a circuit of each pulse spiral coil 3. Of course, the pulse spiral coil 3 may be three, four or more. Above-mentioned structure sets up a plurality of pulse helical coil 3 that connect in parallel, and in the course of working, from up switching on in proper order down, the magnetic field that generates in proper order can loop through a plurality of electromagnetic fields like this and accelerate the steel ball to reach higher process velocity.
Referring to fig. 1-4, at least two steel balls with a diameter of 0.5-6mm are placed in each machining channel. For the same processing position of the surface of the metal plate part a, multiple times of impact can be realized under single acceleration, and the processing efficiency is further improved.
Referring to fig. 1-4, the clamping mechanism comprises a clamping bracket 4 and a fastening screw 5, wherein the clamping bracket 4 is positioned at the outer side of the processing box body 1 and is provided with a plurality of clamping channels 4-1; in a clamping state, the edge of a metal plate a to be processed is placed in the clamping channel 4-1, and the fastening screw 5 extends into the clamping channel 4-1 to fix the metal plate a; the clamping plane on which the plurality of clamping channels 4-1 are arranged is positioned above the top of the straight circular tube 2.
Further, the bottom of the clamping support 4 is fixedly connected with the bottom of the processing box body 1 through a fixing bolt, so that the whole strengthening processing equipment is more compact in structure.
Referring to fig. 1 to 4, the processing tank 1 is made of a non-magnetic material. In practical application, aluminum material or other high-strength non-metallic materials can be selected as the material.
Referring to fig. 1-4, the micro-texture processing equipment described above works on the principle:
when the processing device works, a plurality of steel balls are respectively arranged in the processing channels of a plurality of straight round tubes 2, and then a metal plate a to be processed (metal plate a, such as parts with high requirements on the physical properties of surfaces, such as valve plates, guide rails and the like) is clamped at the top of the processing box body 1 through a clamping mechanism, so that the surface to be processed faces downwards and faces the processing channels. The pulse power supply is switched on, so that high-voltage pulse current flows through the pulse spiral coil 3, a strong magnetic field is generated around the pulse spiral coil 3 in the process, and the pulse spiral coil 3 is positioned on the steel ball, so that the magnetic field generated by the pulse spiral coil 3 is equivalent to an invisible strong magnet suspended right above the steel ball, and attracts the steel ball to move upwards in an accelerated manner.
Furthermore, after being accelerated by magnetic force, the steel balls move upwards at high speed until impacting on the metal plate part a positioned at the top of the processing channel, and the steel balls respectively impact on different positions of the processing surface of the metal plate part a, so that micro pits are generated at different positions of the surface of the metal plate part a at the same time, and the pits form a micro texture structure.
In addition, before the steel ball approaches the inside of the pulse spiral coil 3, the power supply is cut off, the magnetic field disappears (the interference of the magnetic field to the steel ball during the rear-section movement is avoided), and at the moment, the steel ball still moves upwards at a high speed until the steel ball impacts the metal plate part a. After the steel balls impact the metal plate a, the steel balls fall down along the machining channel under the action of gravity and rebound force and return to the bottom of the machining channel. Switching on the power supply again to ensure that the steel balls after the falling back obtain the driving force again, moving upwards again, impacting on the processing surface of the metal plate part a at a high speed, and then falling back again; and circulating in sequence to realize the strengthening processing of the surface of the metal plate part a until the processing is finished.
Example 2
Referring to fig. 5, unlike embodiment 1, the pulse spiral coil 3 is one in this embodiment, and is suitable for different processing occasions.
The present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents and are included in the scope of the present invention.
Claims (7)
1. A micro-texture processing device for the surface of a metal plate is characterized by comprising a processing box body, a clamping mechanism and an electromagnetic accelerating mechanism, wherein,
an inner cavity with the same shape as a processing plane of a metal plate to be processed is arranged in the processing box body, a plurality of tightly arranged straight circular tubes are arranged in the inner cavity, the inner cavities of the straight circular tubes form processing channels, and a steel ball for high-speed impact processing is arranged in each processing channel;
the clamping mechanism clamps and fixes the metal plate to be processed at the top of the processing box body, and the processing plane of the metal plate to be processed faces downwards and directly faces to the plurality of processing channels below;
the electromagnetic acceleration mechanism comprises a pulse spiral coil used for generating a magnetic field by electrifying and a pulse power supply used for providing high-voltage pulse current, the pulse spiral coil surrounds the outer side wall of the processing box body, and the direction of the magnetic field formed inside the pulse spiral coil after electrification is the same as the vertical extending direction of the processing channel; in the vertical direction, the pulse spiral coil is positioned above the position of a steel ball which is placed in a machining channel in a static state; the number of the pulse spiral coils is at least two, and the pulse spiral coils are arranged on the outer side wall of the processing box body in a surrounding mode along the vertical direction; the pulse spiral coils are connected to a pulse power supply in parallel, and a working switch is arranged in a circuit of each pulse spiral coil.
2. The microtexturing apparatus for the surface of a sheet metal element as claimed in claim 1, wherein at least two steel balls are placed in each machining channel.
3. The microtexturing apparatus for the surface of sheet metal elements according to any one of claims 1-2, wherein the steel balls have a diameter of 0.5-6 mm.
4. The microtexture processing equipment for the surface of the metal plate part as claimed in claim 3, wherein the clamping mechanism comprises a clamping bracket and a fastening screw, the clamping bracket is positioned at the outer side of the processing box body and is provided with a plurality of clamping channels; in the clamping state, the edge of the metal plate to be processed is placed in the clamping channel, and the fastening screw extends into the clamping channel to fix the metal plate.
5. The microtexturing apparatus for metal plate surfaces according to claim 4, wherein the plurality of clamping channels are located in a plane above the top of the straight circular tube.
6. The microtexturing apparatus for metal plate surface according to claim 4, wherein the bottom of the clamping bracket is fixedly connected with the bottom of the processing box body through a fixing bolt.
7. The microtexturing apparatus for sheet metal surfaces of claim 1, wherein the processing box is made of a non-magnetic material.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202640163U (en) * | 2012-06-05 | 2013-01-02 | 杨树芳 | Electromagnetic shot device |
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| JPH11286787A (en) * | 1998-04-06 | 1999-10-19 | Nisshinbo Ind Inc | Surface treating method for back plate for friction material |
| CN102212665B (en) * | 2011-06-10 | 2013-03-06 | 苏州热工研究院有限公司 | Inner wall shot peening strengthening treatment process and device |
| CN103088196B (en) * | 2013-01-18 | 2014-07-30 | 北京航空航天大学 | Method for strengthening and forming electromagnetic pulse by adopting pellet cushion mould |
| CN103173596B (en) * | 2013-01-18 | 2014-07-30 | 北京航空航天大学 | Electromagnetic pulse strengthening and forming device adopting small ball cushion die |
| CN103586324B (en) * | 2013-10-30 | 2015-07-29 | 华中科技大学 | A kind of metal sheet electromagnetism internal stress adjusts shape method |
| CN107336142B (en) * | 2017-08-09 | 2019-03-19 | 山东大学 | A kind of device and method of electromagnetism assisting ultrasonic shot-peening |
| CN109457092A (en) * | 2018-10-10 | 2019-03-12 | 温州大学激光与光电智能制造研究院 | A kind of method that the mechanical lapping of resistance heating auxiliary surface forms gradient nano structure |
| CN109593442B (en) * | 2018-12-26 | 2020-06-09 | 清华大学 | Preparation method of self-repairing and self-lubricating coating based on micro-texture surface |
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| CN202640163U (en) * | 2012-06-05 | 2013-01-02 | 杨树芳 | Electromagnetic shot device |
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