JP2012228728A - Machining method and machining device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a machining method and a machining device which improve wettability of a machining oil with the surface of a workpiece that leaves undesired deformed parts such as burrs and cutting chips, by applying at least one of a plasma treatment, a discharge treatment, and an impact wave treatment to the workpiece to clean the surface thereof; which suppress abrasion of a mold and a workpiece, that is caused by shearing or bending, by thinly uniformly applying a machining oil to the workpiece; and which produce a high-quality product having no undesired deformed part, by removing burrs and cutting chips generated after machining.SOLUTION: In the machining method for machining a workpiece that leaves undesired deformed parts, at least one of a plasma treatment, a discharge treatment, and an impact wave treatment is applied to the workpiece.

Description

  The present invention relates to a processing method and a processing apparatus, and more particularly, to a processing method and a processing apparatus suitable for processing a material to be processed in which unnecessary deformed portions such as burrs and cutting scraps are generated.

  In general, the progressive press processing is, for example, a thin plate-like metal having a thickness of about 0.1 mm to 0.3 mm between a pair of dies at a feed pitch of 10 mm per shot and at a speed of 250 shots per minute. It is a processing method that performs metal plastic processing along the mold by sandwiching the material to be processed and applying pressure from both sides. By performing various processes such as punching and bending in order, the three-dimensional shape This is a processing method that enables molding.

  A typical process performed by pressing will be described in detail below.

  As shown in FIG. 9, the punching process (shearing process) for perforating is similar to the upper mold 20 in which the protrusion 22 having a desired shape is formed, and the protrusion 22. In addition, the material to be processed W is sandwiched between the lower mold 21 in which the through-hole 23 having a larger diameter is formed, and pressure is applied from above and below in FIG. When the material to be processed W comes into contact with the upper mold 20 and the lower mold 21, it is pushed into the through hole 23 by the protrusion 22, thereby forming a cut portion 24 similar to the protrusion 22. When pressure is further applied by the upper mold 20 and the lower mold 21, the protrusion 22 penetrates the material to be processed W, and the cut portion 24 separated from the protrusion 22 and the material to be processed W passes through the through hole 23. The through portion 25 having a desired shape is formed in the material W to be processed.

  In the bending process, as shown in FIG. 10, a thin plate-shaped material W is conveyed between a bending punch 26 as the upper mold 20 and a bending die 27 as the lower mold 21. A wall of the bending die 27 is applied to the lower surface of the end portion 29 of the material W to be processed by applying pressure from above and below in FIG. 10 to the conveyed material W to be processed by the bending punch 26 and the bending die 27. The material W to be processed is warped and bent while being in sliding contact with the corner 28a of the portion 28 in contact.

  As described in Patent Document 1, for example, such press working is performed on a metal member used for a connector portion for an external interface such as a mobile phone, a personal digital assistant (PDA), and a personal computer (PC). Used in manufacturing.

Japanese Patent Laid-Open No. 2004-261836

  When performing the press working, a large amount of press working oil is applied to the material to be treated W in order to suppress lubricity between the material to be treated W and the die and wear of the die.

  However, for example, organic matter such as oil or dirt such as dust adheres to the surface of the material W to be treated, and the part where the dirt adheres has poor wettability with press working oil, and a large amount of press There is a problem that even if the processing oil is applied, the pressing oil cannot be uniformly applied to the surface of the material W to be processed, and the material W to be processed and the mold are damaged.

  Furthermore, since the press working oil is used in a large amount, the press working oil whose temperature has risen evaporates and gives an environmental load. Moreover, mass consumption of press working oil has the problem that cost becomes high.

  In addition, the metal member used for the external interface is partially or wholly formed with a tin plating film for reflow soldering in a later process, or a plating film for preventing oxidation of the exposed parts in the final product. It is plated. In most cases, this plating is performed from the stage of the raw material of the material to be pressed.

  In general, when punching is performed on the material to be processed W, as shown in FIG. 9 (d), a whisker shape as an unnecessary deformation portion is formed on the side edge where the cut portion 24 is separated from the material to be processed W. It is known that burrs 15 are generated, and in particular, the material to be processed W that has been subjected to plating processing is likely to generate whiskers 15. Similarly, when the material W to be plated is bent, the corner portion 28a of the wall portion 28 is slidably contacted as shown in FIG. 10 (d). Plating is scraped off, and ironing burrs 16 are generated as unnecessary deformation portions, resulting in a defective product with a low dimensional accuracy of the molded product, and injuries at the tip of the burrs.

  Therefore, the present invention cleans the surface of the material to be treated by performing at least one of plasma treatment, electric discharge treatment and shock wave treatment on the material to be treated in which unnecessary deformation portions such as burrs and cutting waste are generated. This improves the wettability of the processing oil to the surface of the material to be processed, and can apply the processing oil thinly and evenly to suppress die wear due to metal plastic processing. It is an object of the present invention to provide a processing method and a processing apparatus that can remove unnecessary deformation portions such as those and obtain a high-quality product having no unnecessary deformation portions.

  In order to solve the above-mentioned problems, a first processing method of the present invention is a processing method for processing a material to be processed in which an unnecessary deformed portion is generated, wherein the material to be processed is subjected to plasma treatment, discharge treatment and shock wave treatment. It is characterized by applying at least one.

  According to such a first processing method of the present invention, the surface of the material to be processed can be cleaned by plasma treatment, and burrs and cutting chips generated in the material to be processed by electric discharge treatment or shock wave treatment are unnecessary. By removing the deformed portion, it is possible to obtain a high-quality product having no unnecessary deformed portion.

  The second processing method of the present invention is characterized in that the material to be treated is a metal material, a polymer material, or a composite material of a metal material and / or a polymer material.

  According to the second processing method of the present invention as described above, it is possible to obtain a high-quality metal product or polymer product having no unnecessary deformation portion.

  The third processing method of the present invention is characterized in that the plasma treatment or the discharge treatment is performed before the material to be processed is processed.

  According to the third processing method of the present invention, the surface of the material to be processed can be cleaned by plasma treatment or discharge treatment. For example, when processing oil is applied to the material to be processed before processing, the processing oil can be applied thinly and evenly to the material to be processed, and wear of the mold can be prevented. And

  The fourth processing method of the present invention is characterized in that after processing the material to be processed, at least one of the plasma processing, the discharge processing, and the shock wave processing is performed.

  By using the fourth processing method of the present invention as described above, it is possible to remove burrs, cutting scraps, and the like generated in the processed material after processing, and obtain a high-quality product without unnecessary deformation portions. Is possible.

  The fifth processing method of the present invention is characterized in that the material to be processed is transported from the upstream side, and a processing oil is applied before processing the surface of the material to be processed.

  According to the fifth processing method of the present invention, the surface of the material to be processed can be cleaned by plasma treatment, and burrs and cutting debris generated in the material to be processed by electric discharge treatment or shock wave treatment can be removed. By removing it, it is possible to obtain a high-quality product without unnecessary deformation.

  The sixth processing method of the present invention is characterized in that the plasma treatment is performed on the surface of the material to be processed before applying the processing oil to the surface of the material to be processed.

  According to the sixth processing method of the present invention, the surface of the material to be processed can be cleaned by plasma treatment, and the processing oil can be applied thinly and uniformly to the material to be processed. It is possible to prevent.

  The seventh processing method of the present invention is characterized in that the plasma processing or the discharge processing is performed on the processing target material after processing the processing target material made of the metal material or the composite material.

  According to the seventh processing method of the present invention, it is possible to remove burrs, cutting scraps and the like generated in the processed material after processing, and to obtain a high-quality product without unnecessary deformation portions. Make it possible.

  The eighth processing method of the present invention is characterized in that after the processing material made of the polymer material or the composite material is processed, the discharge processing or the shock wave processing is performed on the processing material. .

  According to the eighth processing method of the present invention, it is possible to remove burrs, cutting waste, and the like generated in the processed material after processing, and to obtain a high-quality product without unnecessary deformation portions. Make it possible.

  A first processing apparatus according to the present invention includes a transport unit that transports a material to be processed in which an unnecessary deformation portion is generated, and a processing unit that applies a shearing force and a bending stress to the material to be processed to form the material to be processed. The processing apparatus comprises: at least one of plasma processing means for performing plasma processing on the material to be processed, discharge processing means for performing discharge processing, and shock wave processing means for performing shock wave processing.

  According to such a first processing apparatus of the present invention, the surface of the material to be processed can be cleaned by the plasma processing means, and burrs and cuttings generated in the material to be processed by the discharge processing means or the shock wave processing means can be obtained. By removing waste and the like, it is possible to obtain a high-quality product without unnecessary deformation.

  In the second processing apparatus of the present invention, an oil application unit that applies processing oil to a surface of the material to be processed is provided in a conveyance path upstream of the processing unit in the conveyance direction of the material to be processed, The plasma processing means is arranged on the upstream side of the oil application means in the transport path.

  According to the second processing apparatus of the present invention, the surface of the material to be processed is cleaned by the plasma processing unit before the processing oil is applied by the oil applying unit. Can be applied thinly and uniformly. Furthermore, by uniformly applying the processing oil, it is possible to eliminate unevenness in lubricity between the material to be processed and the mold, improve the dimensional accuracy of the molding, and at the same time prevent the mold from being worn. .

  In the third processing apparatus of the present invention, the material to be processed is a metal material or a composite material of a metal material and / or a polymer material, and the processing means of the transfer path in the transfer direction of the material to be processed is provided. The plasma processing unit or the discharge unit is disposed on the downstream side.

  According to the third processing apparatus of the present invention, burrs and cutting debris generated in the processed material after processing can be removed by the plasma processing means or the discharge processing means, and unnecessary deformation portions It is possible to obtain a high-quality product without any problems.

  The fourth processing apparatus of the present invention is a polymer material or a metal material and / or a composite material of a polymer material, and in the transport direction of the material to be processed, on the downstream side of the processing means in the transport path, The discharge processing means or the shock wave processing means is provided.

  According to such a fourth processing apparatus of the present invention, burrs, cutting scraps, etc. generated in the processed material after processing can be removed by the discharge processing means or the shock wave processing means, and unnecessary deformation portions It is possible to obtain a high-quality product without any problems.

  The fifth processing apparatus of the present invention is characterized in that the plasma processing means, the discharge processing means, and the shock wave processing means comprise the same plasma source.

  According to such a fifth processing apparatus of the present invention, it is possible to perform plasma processing, electric discharge processing, and shock wave processing using one plasma source.

  The sixth processing apparatus of the present invention is characterized in that the plasma processing means, the discharge processing means, and the shock wave processing means have exhaust means for exhausting the processed gas.

  According to the sixth processing apparatus of the present invention, since the processed gas can be exhausted, dirt, burrs, cutting waste, etc. removed by plasma processing, discharge processing and shock wave processing are processed. It is possible to prevent the material from adhering to the material again and to obtain a high-quality product having no unnecessary deformation portion.

  According to the present invention, by performing plasma treatment, discharge treatment, and shock wave treatment, the material to be treated can be cleaned, and unnecessary deformed portions such as burrs and cutting waste can be removed. Thereby, a high quality product without an unnecessary deformation part can be obtained.

  In addition, according to the present invention, by applying plasma treatment before applying the processing oil, the processing oil can be applied thinly and uniformly to the material to be processed, thereby improving the product dimension system of the material to be processed and It is possible to suppress the wear of the mold.

The block diagram which shows the concept of the processing method of this invention The block diagram which shows the structure of the processing apparatus of 1st Embodiment of this invention. The block diagram which shows the structure of the processing apparatus of 2nd Embodiment of this invention. Schematic sectional view showing the configuration of the processing apparatus of the third embodiment of the present invention Schematic sectional view showing the configuration of the processing apparatus of the fourth embodiment of the present invention Schematic sectional view showing the configuration of the processing apparatus of the fifth embodiment of the present invention It is the image which observed the edge of the processed material before atmospheric pressure plasma discharge processing using a scanning electron microscope (SEM), (a) is the SEM image which observed the whisker-like burr which arose in the processed material, (B) is the SEM image which observed the ironing burr | flash which arose in the to-be-processed material. It is the image which observed the edge of the processed material after atmospheric pressure plasma discharge processing using the scanning electron microscope (SEM), (a) is the SEM image which observed the part from which the whisker-like burr was removed, ( b) is an SEM image obtained by observing a portion from which ironing burrs have been removed. (A) to (d) are schematic cross-sectional views showing punching steps in order of steps. (A) to (d) are schematic cross-sectional views showing bending processes in the order of processes.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  First, the concept of the processing method and processing apparatus of the present invention will be described. The processing method of the present invention is a processing method in which processing is performed on a material to be processed in which unnecessary deformation portions such as burrs and cutting scraps are generated after processing, and the material to be processed is at least one of plasma processing, electric discharge processing, and shock wave processing. It is made to give.

Note that as the material to be processed, metal materials such as stainless steel, copper and copper alloys, iron and aluminum, polymer materials such as high-density polyethylene, and composite materials of metal materials and / or polymer materials can be used. Examples of the composite material include a polymer material in which a metal material such as a copper metal film formed on a polyimide film is partially or entirely coated, or a metal in which a polymer material is partially or entirely coated. A material or a laminated material obtained by laminating a plurality of metal materials or a plurality of polymer materials can be used.
In addition, some of these materials require processing oil at the time of processing, and some do not. Therefore, the use or non-use of processing oil depends on the characteristics of the processing material used for processing. Use may be appropriately selected.

  In the processing apparatus 1 using the processing method of the present invention, as shown in FIG. 1, the plasma processing means 3, the discharge processing means 4 and the shock wave processing means 5 are processed into the material to be processed W with respect to the processing means 2. You may provide in either one or both before and after giving. In particular, before processing, the surface of the material W to be processed is subjected to plasma treatment to clean and clean the surface of the material W to be processed, thereby providing lubricity and preventing wear of the mold. The wettability of the oil to the material to be treated W can be improved. In addition, by performing the plasma treatment, the discharge treatment, or the shock wave treatment after the processing, unnecessary deformation portions such as burrs and cutting chips generated in the processing target material W by the processing can be removed.

  Such an embodiment of the processing apparatus 1 of the present invention will be described in more detail with reference to FIGS.

  As shown in FIG. 2, the first embodiment of the processing apparatus 1 of the present invention is a processing means 2 that performs plastic processing on a material W to be processed using a die or a metal blade incorporating a punch or die. And an oil applying means 6 for applying the processing oil to the material W to be processed, and before applying the processing oil, a plasma is generated from a plasma source (not shown), and the plasma is applied to the material W to be processed. The plasma processing means 3 for performing the discharge or the discharge processing means 4 for performing the discharge processing by discharging the material W to be processed.

  According to the first embodiment, the material W to be processed is irradiated with plasma or discharged by the plasma processing means 3 or the discharge processing means 4 and adhered to the surface, for example, organic matter such as oil or dust. Clean and clean the dirt. Thereafter, processing oil is applied by the oil applying means 6 to the purified surface of the material W to be processed, and the processing means 2 performs processing.

  According to such a processing apparatus 1 of the first embodiment, before the processing oil is applied, the surface of the material W to be processed is purified by the plasma processing unit 3 or the discharge processing unit 4 to process the surface. The oil wettability is improved and the processing oil can be applied thinly and uniformly, so that the die or metal blade incorporating a punch or die used for processing is prevented from coming into direct contact with the material W to be processed. Can do. Furthermore, by uniformly applying the processing oil, unevenness in lubricity that appears in the processing of the material W to be processed is eliminated, the dimensional accuracy of the molding is improved, and wear of the mold and the metal blade can be prevented. . In addition, by reducing the amount of processing oil applied to the material W to be processed and reducing the amount of processing oil used, the processing oil evaporated to the surrounding area can be reduced, reducing the environmental burden and reducing the cost. Make it possible.

  In addition, when using the to-be-processed material W which does not require process oil at the time of a process, application | coating of process oil can be abbreviate | omitted. In such a processing method, before processing by the processing means 2, the material W to be processed is subjected to plasma processing by the plasma processing means 3 or discharge processing by the discharge processing means 4, for example, oil or the like. Processing can be performed in a clean state in which dirt such as organic matter and dust is washed.

  Further, in the second embodiment of the processing apparatus 1 of the present invention, as shown in FIG. 3, the material to be processed W is punched, cut, bent, drawn or the like by a die or a metal blade incorporating a punch or die. At least one of plasma, discharge, and shock wave is generated from a plasma source (not shown) with respect to the processing means 2 for performing the plastic processing and the processing target material W after the processing, and plasma is generated on the processing target material W. At least one of plasma processing means 3 for applying plasma treatment, discharge processing means 4 for performing discharge processing, and shock wave processing means 5 for performing shock wave processing.

  According to the processing apparatus 1 of the second embodiment, plasma processing or discharge processing is performed by the plasma processing means 3 or the discharge processing means 4 on the material W to be processed. When plasma treatment or electric discharge treatment is performed on the material to be treated W, the discharge concentrates on the unnecessary deformation parts such as burrs and cutting scraps generated on the material to be treated W so that lightning falls on the lightning rod, and is heated. Unnecessary deformed portions are evaporated and removed. Furthermore, when the discharge is concentrated, a large electric field is generated, and burrs and the like can be separated by Coulomb force.

  Further, shock wave processing is performed by the shock wave processing means 5 on the material W to be processed. When the processing target material W is subjected to shock wave processing, the shock wave is transmitted to unnecessary deformation portions such as burrs and cutting chips generated in the processing target material W, and the unnecessary deformation portions can be detached by the impact.

  Moreover, 3rd Embodiment of the processing apparatus 1 of this invention is a to-be-processed material which consists of a thin-plate-shaped metal material about 0.1-0.3 mm in thickness and 10 mm-100 mm in width, as shown in FIG. A coil 7 in which W is wound in a roll shape, a conveying means 8 for carrying out the material W to be processed from the coil 7 and conveying it to the downstream side, and a plasma treatment for performing a plasma treatment on the surface of the material W to be treated Means 3, oil application means 6 for applying processing oil to the surface of the material to be processed W, processing means 2 for subjecting the material to be processed W to plastic processing such as shearing or bending, and the material to be processed W are wound up Winding means 9 is provided.

  Here, the processing means 2 will be described as a progressive press machine.

  At this time, the plasma processing means 3 is disposed upstream of the oil applying means 6 in the transport direction of the material W to be processed.

  The operation of the processing apparatus 1 according to the third embodiment will be described. The processing target material W transported from the coil 7 by the transporting unit 8 is irradiated with plasma by the plasma processing unit 3, and the surface of the processing target material W is irradiated. For example, organic substances such as oil and dirt such as dust are washed off.

  Furthermore, the processing material W is applied to the cleaned material W by the oil application unit 6 and is transported to the downstream processing unit 2 for plastic processing.

  According to such a processing apparatus 1 of the third embodiment, the wettability of the processing oil with respect to the surface is improved by purifying the surface of the material W to be processed by the plasma processing means 3 before applying the processing oil. Since the processing oil can be applied thinly and uniformly, it is possible to prevent a die or a metal blade incorporating a punch or die used for processing from coming into direct contact with the material W to be processed. Furthermore, by uniformly applying the processing oil, unevenness in lubricity that appears in the processing of the material W to be processed is eliminated, the dimensional accuracy of the molding is improved, and wear of the mold and the metal blade can be prevented. . In addition, by reducing the amount of processing oil applied to the material W to be processed and reducing the amount of processing oil used, the processing oil evaporated to the surrounding area can be reduced, reducing the environmental burden and reducing the cost. Make it possible.

  Further, in the fourth embodiment of the processing apparatus 1 of the present invention, as shown in FIG. 5, a coil 7 on which a material W to be processed made of a thin plate-like metal material is wound and placed in a roll shape, and the coil 7. The material to be treated W is unloaded from the conveying means 8 and conveyed to the downstream side, the processing means 2 for subjecting the material to be treated W to plastic processing such as shearing or bending, and the surface of the material to be treated W is subjected to discharge treatment. Discharge processing means 4 to be applied and winding means 9 for winding up the material W to be processed are provided.

  Here, the processing means 2 will be described as a progressive press machine.

  At this time, the discharge processing means 4 is disposed on the downstream side of the processing means 2 in the conveying direction of the material W to be processed.

  The operation of the processing apparatus 1 according to the fourth embodiment will be described. The processing means 2 applies plastic processing to the material W to be processed that has been transferred from the coil 7 by the transfer means 8.

  Furthermore, the discharge processing means 4 applies an electric discharge to the processed material W that has been processed, thereby removing burrs and cutting debris generated in the processed material W during processing.

  According to the processing apparatus 1 of the fourth embodiment as described above, by providing the discharge processing means 4 on the downstream side of the processing means 2 in the transport direction of the material W to be processed, burrs and cutting scraps are not necessary due to processing. Since the material to be processed W in which the deformed portion is generated can be discharged and the unnecessary deformed portion can be removed by heating or impact of discharge, it is possible to obtain a high-quality product having no unnecessary deformed portion. To do.

  Further, in the fifth embodiment of the processing apparatus 1 of the present invention, as shown in FIG. 6, a coil 7 in which a material W to be processed made of a thin plate-like metal material is wound and placed in a roll shape, and the coil 7. The conveying means 8 for carrying out the material W from the substrate and conveying it to the downstream side, the plasma processing means 3 for performing plasma treatment on the surface of the material W to be processed, and the oil application for applying processing oil to the surface of the material W to be processed Means 6, processing means 2 for subjecting the material to be processed W to plastic processing such as shearing or bending, discharge processing means 4 for subjecting the surface of the material to be processed W to discharge treatment, and winding for winding the material to be processed W A take-out means 9 is provided.

  Here, the processing means 2 will be described as a progressive press machine.

  The coil 7 is disposed in the uppermost stream, and the material W to be processed is conveyed from the coil 7 to the downstream side by the conveying means 8.

  A plasma processing unit 3, an oil application unit 6, a processing unit 2 and an electric discharge processing unit 4 are arranged in this order from the upstream side downstream of the coil 7 in the conveyance direction of the material W to be processed.

  The operation of the processing apparatus 1 according to the fifth embodiment will be described. The processing material W transported from the coil 7 by the transporting means 8 is irradiated with plasma by the plasma processing means 3 and adhered to the surface of the processing material W. For example, organic matters such as oil and dirt such as dust are washed. The cleaned material W is transported to the oil application means 6 on the downstream side, processed oil is applied by the oil application means 6, and is transported to the processing means 2.

  By applying a discharge to the material W to be processed, which has been plastically processed by the processing means 2, by the discharge processing means 4, unnecessary deformation portions such as burrs and cutting chips generated in the material W to be processed are removed.

  According to such a processing apparatus 1 of the fifth embodiment, the wettability of the processing oil to the surface is improved by purifying the surface of the material W to be processed by the plasma processing means 3 before applying the processing oil. Since the processing oil can be applied thinly and uniformly, it is possible to prevent a die or a metal blade incorporating a punch or die used for processing from coming into direct contact with the material W to be processed. Furthermore, by uniformly applying the processing oil, unevenness in lubricity that appears in the processing of the material W to be processed is eliminated, the dimensional accuracy of the molding is improved, and wear of the mold and the metal blade can be prevented. . In addition, by reducing the amount of processing oil applied to the material W to be processed and reducing the amount of processing oil used, the processing oil evaporated to the surrounding area can be reduced, reducing the environmental burden and reducing the cost. Make it possible.

  Furthermore, by providing the discharge processing means 4 on the downstream side of the processing means 2 in the conveying direction of the material to be processed W, discharge is performed on the material W to be processed in which unnecessary deformation portions such as burrs and cutting scraps are generated by the processing. Since it is possible to remove burrs and cutting debris by heating or impact of electric discharge, it is possible to provide a high-quality product without unnecessary deformation parts.

  Although the discharge processing means 4 is used as a means for removing burrs and cutting debris generated by processing, the plasma processing means 3 may be used when the material to be processed W is a metal material.

  Further, when the material W to be processed is a metal material, a potential may be applied by applying a bias voltage to the material W to be processed or a portion on which the material W to be processed is placed. Thereby, at the time of plasma processing, the plasma can be attracted in the direction of the material W to be processed to improve the processing efficiency. Similarly, at the time of the discharge process, it is possible to effectively discharge the unnecessary deformed portion of the material W to be processed.

  Further, when the material W to be processed is a polymer material, shock wave processing means 5 may be used instead of the discharge processing means 4.

  According to the shock wave processing means 5, by irradiating a shock wave to unnecessary deformation portions such as burrs and cutting chips generated by machining, the unnecessary deformation portion can be detached or evaporated by vibration and heat generation of the shock waves.

  Here, as a plasma source in the plasma processing means 3 used in the present invention, a plasma that generates plasma such as a glow discharge type, a barrier discharge type, a corona discharge type, an arc discharge type, a high frequency inductive coupling type, a laser beam, radiation, a shock wave, etc. There is no particular limitation as long as it is sufficient. The plasma source can be generated under conditions such as high pressure, low pressure, and atmospheric pressure.

  As a plasma generating gas used for plasma generation, air is desirable, but as other gases, various gases such as helium gas, argon gas, nitrogen gas, oxygen gas, fluorine gas, hydrogen gas, and water vapor are used. There is no particular limitation. Furthermore, in addition to a single gas, a plasma generating gas that is a mixed gas by combining a plurality of gases arbitrarily selected from the above gases can be used.

  Further, in the discharge treatment means 4 used in the present invention, the material to be treated W can be discharged such as a discharge generated by applying a voltage between a pair of electrodes, discharge by arc discharge plasma, discharge by corona discharge plasma. Any thing can be used. In particular, it is preferable to use arc discharge plasma.

  In the shock wave processing means 5 used in the present invention, the plasma temperature is increased at high speed by momentarily applying a large electric power to the pair of electrodes with respect to the plasma source. As a result, the plasma is greatly expanded instantaneously, and the unnecessary deformation portion is physically removed from the material to be processed W by the shock wave generated when the expansion speed exceeds the sound speed of the surrounding gas. The shock wave processing means 5 may be anything other than this method as long as it can irradiate the unnecessary deformation portion with a shock wave.

  In addition, when the material W to be processed is a polymer material, by applying a voltage having a high frequency to the plasma source, an electric field concentration is generated in the material W to be processed. Unnecessary deformed portions such as cutting waste can be removed. In this case, the plasma processing means 3 is used to apply a high-frequency voltage with a frequency of, for example, 10 MHz to 400 MHz to the plasma source and irradiate the plasma to be processed W with the generated plasma. The electric field concentrates on a sharp protrusion such as cutting scraps and is selectively heated, whereby the burrs and cutting scraps can be evaporated and removed.

  The plasma processing unit 3, the discharge processing unit 4 and the shock wave processing unit 5 may use processing apparatuses using the same plasma source, and the type and strength of the voltage applied according to each processing. Is appropriately adjusted.

  In the first to fifth embodiments, the plasma processing unit 3, the discharge processing unit 4 and the shock wave processing unit 5 are preferably provided with an exhaust unit 10 for exhausting the processed gas. Thereby, it is possible to prevent dirt, burrs and the like separated from the surface of the material to be processed W from adhering to the surface of the material to be processed W again.

  Moreover, as shown in FIG. 6, between the processing means 2 and the discharge processing means 4, for example, a sensor 11 such as a camera, and the automatic control mechanism 12 having an automatic control unit and an automatic control means in the discharge processing means 4. The sensor 11 identifies the part where the burrs and the like of the material W to be processed are generated, and transmits the obtained position information to the automatic control unit of the automatic control mechanism 12 to automatically perform the process based on the position information. The direction of the electrode of the discharge processing means 4 may be determined by the control means in the direction of the unnecessary deformation portion. Thereby, only the said unnecessary deformation | transformation part can be removed efficiently.

  In addition, a general surface cleaning process for removing at least oil may be provided between the processing means 2 and the discharge processing means 4 or the shock wave processing means 5, thereby generating the surface of the material W to be processed. The effect of the discharge treatment or shock wave treatment can be improved on unnecessary deformation portions such as burrs and cutting scraps.

  In the case where the processing means 2 is press working, the material to be processed W carried out from the coil 7 is rolled to the surface on the downstream side of the coil 7 in the conveying direction of the material W to be processed. It is preferable that a leveler 13 for leveling generated wrinkles and irregularities is provided.

  In addition, an air feeder 14 that conveys the material W to be processed at a predetermined pitch and speed is disposed on the upstream side of the plasma processing means 3 in the conveying direction so as to keep the processing speed constant. preferable.

<Example>
(A) and (b) of FIG. 7 are a cross-section and an end after processing using a press processing machine with respect to the to-be-processed material W in which the tin-type plating process was performed by the thickness of several microns. It is the image which observed the edge | side using the scanning electron microscope (SEM).

  FIG. 7A shows that a whisker-like burr 15 is generated in a portion surrounded by A. Similarly, in FIG. 7B, ironing burrs 16 generated by squeezing with a tool during processing are recognized in a portion surrounded by B.

  Therefore, the effect of the atmospheric pressure plasma discharge treatment on unnecessary deformation portions generated in the material W to be processed, particularly, burrs, was examined.

A plasma discharge treatment was performed by using a known configuration as an atmospheric pressure plasma generator, placing the material W to be processed on the transfer device, and reciprocating in the atmospheric pressure plasma irradiated with the discharge. . Detailed experimental conditions are as follows.
(1) Conveying speed: 10mm / sec
(2) Applied voltage: 100W
(3) Plasma generating gas: Argon gas = 4000 cc
Oxygen gas = 20cc
(4) Distance from plasma source: 50 mm
(5) Irradiation frequency: 2 times

  The SEM image after performing plasma discharge irradiation to the to-be-processed material W on the said conditions is shown in FIG. 8A is an SEM image after the atmospheric pressure plasma discharge irradiation is performed on the whisker-like burrs 15 shown in FIG. 7A, and FIG. It is a SEM image after performing an atmospheric pressure plasma discharge irradiation with respect to the ironing burr | flash shown in FIG.

  It can be seen that after irradiation, the whisker-like burrs 15 are completely removed from the root portion in the portion surrounded by A ′. Similarly, it can be seen that the ironing burr 16 is also removed in the portion surrounded by B ′. This is because when a large voltage is applied to the plasma source, an arc discharge is generated in which discharge occurs intensively, and the discharge is concentrated on protrusions such as burrs. This is thought to be due to evaporation by heat.

  From this result, it can be seen that the atmospheric pressure plasma discharge treatment can effectively remove the whisker-like burrs 15 and the ironing burrs 16 generated when the press working is performed.

  Further, from FIG. 8, even if the atmospheric pressure plasma discharge treatment is performed on the material to be treated W, the material to be treated W is not damaged, and by performing the atmospheric pressure plasma discharge treatment after the press working, It is possible to provide high-quality products without burrs.

  In the present embodiment, description has been made using a progressive press as the processing means 2, but it may be a process in which an unnecessary deformation part such as a burr is generated, such as a single-shot press or a cutting device. Any processing means may be used without any particular limitation.

  Moreover, the processing apparatus of this invention is not limited to this embodiment, A various change is possible.

DESCRIPTION OF SYMBOLS 1 Processing apparatus 2 Processing means 3 Plasma processing means 4 Discharge processing means 5 Shock wave processing means 6 Oil application means 7 Coil 8 Conveying means 9 Winding means 10 Exhaust means 11 Leveler 12 Air feeder 13 Whisker burr 14 Ironing burr 20 Upper die 21 Lower mold 22 Protruding portion 23 Through hole 24 Thin portion 25 Through portion 26 Bending punch 27 Bending die 28 Wall portion 28a Corner portion 29 End portion W Material to be processed

Claims (14)

In a processing method for processing a material to be processed in which unnecessary deformation occurs,
A processing method characterized by applying at least one of plasma processing, electric discharge processing, and shock wave processing to the material to be processed.   The processing method according to claim 1, wherein the material to be treated is a metal material, a polymer material, or a composite material of a metal material and / or a polymer material.   The processing method according to claim 1, wherein the plasma processing or the discharge processing is performed before processing the material to be processed.   The processing method according to claim 1, wherein at least one of the plasma processing, the discharge processing, and the shock wave processing is performed after processing the material to be processed. .   The processing method according to claim 1, wherein the processing material is transported from an upstream side, and processing oil is applied before processing the surface of the processing material.   The processing method according to claim 5, wherein the plasma treatment is performed on the surface of the material to be processed before applying processing oil to the surface of the material to be processed.   The processing according to claim 2 or 6, wherein the processing target material made of the metal material or the composite material is processed, and then the plasma processing or the discharge processing is performed on the processing target material. Method.   The process according to claim 2 or 6, wherein the material to be treated, which is made of the polymer material or the composite material, is processed, and then the discharge treatment or the shock wave treatment is performed on the material to be treated. Processing method. A transport means for transporting a material to be processed in which an unnecessary deformation portion occurs;
In a processing apparatus comprising processing means for forming the processing material by applying a shearing force and a bending stress to the processing material,
A processing apparatus comprising at least one of plasma processing means for performing plasma processing on the material to be processed, discharge processing means for performing discharge processing, and shock wave processing means for performing shock wave processing. The transport path on the upstream side of the processing means in the transport direction of the material to be processed includes an oil application means for applying processing oil to the surface of the material to be processed.
The processing apparatus according to claim 9, wherein the plasma processing unit is disposed on the upstream side of the oil application unit in the transport path. The material to be treated is a metal material or a composite material of a metal material and / or a polymer material,
The plasma processing means or the discharge means is disposed on the downstream side of the processing means in the transport path in the transport direction of the material to be processed. Processing equipment. The material to be treated is a polymer material or a metal material and / or a composite material of a polymer material,
11. The discharge processing means or the shock wave processing means is disposed on the downstream side of the processing means in the transport path in the transport direction of the material to be processed. Processing equipment.   The processing apparatus according to claim 9, wherein the plasma processing unit, the discharge processing unit, and the shock wave processing unit are made of the same plasma source.   The processing apparatus according to claim 9, wherein the plasma processing unit, the discharge processing unit, and the shock wave processing unit include an exhaust unit that exhausts the gas after the processing.