JP2008290180A - Surface treatment method and apparatus for film-like object - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a surface treatment method and an apparatus for a film-like object, capable of preferably providing flatness by a fine cutting operation without unevenness for the film-like object while maintaining a state of no external force applied thereto. <P>SOLUTION: An axial cutting tool 2 is provided with a permanent magnet 20 at an end serving as a magnetic field generation source and a plurality thereof are arranged. The axial cutting tools are arranged at least in two lines and the front and rear of axial cutting tools viewed from the line direction are arranged at a predetermined overlapping amount and at deviated positions. A polishing object 1 is moved in a predetermined direction. The lines of the axial cutting tools 2 are made to make a motion such as rotation by activating drive means and also reciprocated in the intersecting direction for a feed passage of the polishing object 1. A magnetic polishing liquid 3 is set between the polishing object 1 and the axial cutting tools 2 to fluid-polish by a magnetic cluster (a magnetic brush) generated in the magnetic polishing liquid 3. All the axial cutting tools 2 arranged in the same line function as one tool. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a surface treatment method and a surface treatment apparatus for a film-like object such as a metal ribbon or a resin film. More specifically, the present invention relates to a cutting tool for finely cutting a film-like object. Regarding improvements.

  In the case of film-like objects such as metal ribbons and resin films that are relatively thin and have a relatively large width, surface treatment is required to modify the surface properties during production, and the surface is polished or cleaned. Surface treatment such as cleaning is performed.

  One of the surface treatments is a mirror finish, which is an important surface treatment even for the above-described film-like object. In other words, the mirror finish on the surface of the member is important for the purpose of obtaining the beauty of the appearance and of making the base before the finishing process such as coating.

  However, since the film-like object is a thin film, there is a problem that it can be easily wrinkled with a slight force and is difficult to handle. For example, in the processing method in which a tool such as a polishing pad is brought into contact with the surface to be polished, a large force is generated on the target because a restraining force is applied, so that the mirror finishing cannot be properly performed.

  A so-called magnetic polishing technique is well known as a precision polishing technique that can be mirror-finished. This is performed by mixing a magnetic fluid (MF) or a magnetorheological fluid (MRF) with abrasive particles and moving the mixed liquid by a magnetic field.

  For example, as shown in FIG. 1, the polishing tool is provided with a permanent magnet 20 at the tip of the shaft tool 2, and the shaft portion is linked to a driving means to perform a motion operation such as rotation.

  When a magnetic polishing liquid (paste material) is attached around the polishing tool (shaft tool 2), a large number of ferromagnetic particles (for example, iron particles) and magnetite particles in MF and MRF are aggregated by the magnetic attractive force. Form magnetic clusters. Since this magnetic cluster follows the magnetic flux, it takes a form in which a large number of needles are arranged in opposition to the object to be polished. Therefore, the magnetic polishing liquid adheres to the shaft bit 2 to form a magnetic brush.

  When the magnetic brush or the object to be polished rotates, the magnetic brush moves in contact with the surface of the object to be polished by relative movement between the two. As a result, the unevenness of the surface to be polished is polished by the magnetic brush with the abrasive particles, a smoother surface can be obtained, and non-contact fluid polishing can be performed.

  However, in the case of the magnetic polishing method, the rotating cutting tool bit 2 has a difference in polishing ability due to the difference in peripheral speed between the outer peripheral side and the inner peripheral side. As shown in the graph of FIG. Shows extremely low characteristics. For this reason, there is a problem that unevenness is easily generated in the fine shaving action and the flatness is deteriorated.

  In addition, since a film-like object is a thin film and has a relatively large width, there is a problem that efficiency is not improved by simply applying the magnetic polishing method, and polishing takes time and there is a demand for improvement. .

  The object of the present invention is to solve the above-mentioned problems. The object of the present invention is to maintain a non-contact state in which an external force is not applied to a film-like object, to perform a fine shaving operation without unevenness and to have good flatness. Another object of the present invention is to provide a surface treatment method and a surface treatment apparatus for a film-like object that can be obtained easily and can perform surface treatment efficiently.

  In order to achieve the above-described object, the surface treatment method for a film-like object according to the present invention is such that a shaft tool is brought into contact with the film-like object in a non-contact manner, and a magnetic paste present in the periphery is interlocked. In this method, surface treatment is performed by a fine shaving action, the object is moved in a predetermined direction, and a plurality of axial tools are arranged by providing a magnetic field generating source at the tip. Each of the rows is driven by driving means so that each of them performs a movement operation such as rotation and reciprocating in the crossing direction with respect to the feed path of the object, and the magnetic paste has abrasive grains that exhibit a fine shaving action. It is mixed and exists between the object and the shaft bite, and a surface treatment is performed by a non-contact fine shaving action by applying a stationary or fluctuating magnetic field in time to the magnetic paste by the magnetic field of the magnetic field generation source. Claim 1).

  Further, the reciprocating movement that intersects the feeding path of the target object in a predetermined oblique direction is performed on the array of the axis tools (claim 2).

  Further, at least two rows are arranged in the array of the axis bytes, and the two before and after viewed from the column direction are arranged so as to be shifted by a predetermined overlap (Claim 3).

  The surface treatment apparatus for a film-like object according to the present invention has a surface by a fine shaving action by causing an axial cutting tool to face the film-like object in a non-contact manner and interlocking with a magnetic paste present in the periphery. A surface treatment apparatus for a film-like object to be processed, wherein a plurality of the shaft tools are arranged by providing a magnetic field generating source at the tip, and the arrangement of the shaft tools is rotated by driving means, respectively. The magnetic paste is set so as to reciprocate in a crossing direction with respect to the feed path of the object, and the magnetic paste is mixed with abrasives that exhibit a fine shaving action and A surface treatment can be performed by a non-contact fine cutting action by applying a stationary or fluctuating magnetic field to the magnetic paste in time with the magnetic field of the magnetic field generation source. Was Unishi.

  Therefore, in the present invention, a plurality of shaft tools for magnetic polishing are arranged, and each of them performs a movement operation such as rotation, and the entire array is reciprocated in the direction intersecting the object feed path. As a result, the entire array of axis bytes functions as a single tool.

  Since a plurality of the axial tools are arranged, the area of the non-contact cutting action is naturally widened in the array. Since the object is fed and moved, it is possible to control the shaving action on the moving surface to be uniform by synchronizing the reciprocating movement of the array of axis tools and the feeding movement of the object. In other words, unevenness due to the difference in peripheral speed between the cutting tools of each axis does not occur, and polishing with high flatness can be performed over a wide region.

  In addition, regarding the arrangement of the axis tools, the direction of reciprocating movement is set to a predetermined oblique direction with respect to the feed path of the object. Since the portion is formed, the shaving action can be moved so as to sequentially correct the unevenness of the polishing ability in each axis tool. For this reason, the feed movement of the object has a wider range of synchronization with respect to the reciprocating movement of the array of axis tools, can be set at a higher speed, and the efficiency can be increased.

  In addition, by arranging at least two rows of the axial byte array, and arranging them so that the two before and after viewed from the column direction overlap each other with a predetermined overlap, the axial byte array can be magnetically polished (finely polished). In the case of (shaving), it shows the characteristics that combine the single characteristics, and the arrangement in which the two before and after viewed from the column direction are in a position of deviation with a predetermined overlap, so the single characteristics overlap at the deviation position, and the characteristics that the whole exhibits are flat Become.

  As described above, in the present invention, the entire array of axial tools for magnetic polishing functions as a single tool, and the array of the non-contact cutting action is naturally widened in the array. . Since the object is fed and moved, it is possible to control the shaving action on the moving surface to be uniform by synchronizing the reciprocating movement of the array of axis tools and the feeding movement of the object. In other words, unevenness due to the difference in peripheral speed between the cutting tools of each axis does not occur, and polishing with high flatness can be performed over a wide region.

  Therefore, a non-contact state where no external force is applied to the film-like object can be maintained, and a fine shaving operation can be performed without unevenness, so that flatness can be obtained satisfactorily. As a result, the surface treatment can be performed efficiently.

(First embodiment)
FIGS. 2A and 2B show a first embodiment of the present invention. In this embodiment, the configuration for performing the surface treatment by the fine shaving action is provided with a plurality of the axial cutting tools 2 having the magnetic field generating source (permanent magnet 20) arranged, and the arrangement of the axial cutting tools 2 with respect to the polishing object 1 is not arranged. By facing the contact and interlocking with the magnetic paste (magnetic polishing liquid 3) present in the periphery, the surface treatment is performed by a fine shaving action.

  As the object 1 to be polished, a film-like object having a relatively large width and a thin film having a thickness of several tens to several hundreds of μm, such as a metal ribbon or a resin film, is assumed. This polishing object 1 is moved in a predetermined direction.

  The axial cutting tool 2 is provided with a permanent magnet 20 at its tip to serve as a magnetic field generation source. Here, a plurality of shaft tools 2 are arranged along the feed movement path of the polishing object 1. The rows of the axis tools 2 are rotated by driving of a driving means (not shown). And it is the structure which reciprocates to a crossing direction with respect to the feed path | route of the grinding | polishing target 1 with rotation operation | movement.

  Each axis tool 2 may perform an appropriate motion operation, for example, a reversal operation that repeats a forward rotation and a reverse rotation, for example, instead of simply rotating in the same direction. As the driving means, for example, an NC machine tool may be used, and the shaft portion of the shaft tool 2 is attached to a rotating shaft (chuck portion) such as a drilling machine, a lathe, an NC lathe, a milling machine, and the like.

  The magnetic field generation source is not limited to the permanent magnet 20, and for example, an electromagnet or the like can be preferably applied as long as it can act on the magnetic polishing liquid 3. The generation of the magnetic field does not need to be stationary in time, and may generate a magnetic field that varies in time.

  Moreover, it is also possible to perform reciprocating movement that intersects in a predetermined oblique direction with respect to the feed path of the polishing object 1 in the row of the axial cutting tools 2. For example, it is possible to perform reciprocal movement that is an intersection of the angle θ shown in FIG. 2B in an oblique direction.

  The magnetic polishing liquid 3 contains two components of magnetic particles and a solvent. Vegetable oil or the like is used as the solvent. The magnetic polishing liquid 3 is supplied by a supply means between the polishing object 1 and the shaft tool 2.

  As magnetic particles, metal particles such as ferrite particles and iron powder can be used. Ferrite particles are ceramics mainly composed of iron oxide, and most of them exhibit ferromagnetism. Since they have magnetization, the particles form a magnetic cluster by applying a magnetic field. The same applies to magnetizable metal particles such as iron powder. When a magnetic field is applied, the particles form magnetic clusters. Further, the metal particles such as ferrite particles and iron powder which are ceramics are sufficiently hard for the film-like object of the object 1 to be polished, and thus can function as abrasive grains for polishing, and the magnetic cluster itself. However, it becomes a magnetic brush for performing surface treatment by a fine shaving action.

  As described above, each of the movements of the shaft tool 2 performs a predetermined movement operation such as a simple rotation operation, a reversal operation that repeats normal rotation, and reverse rotation, and the line is arranged with respect to the feed path of the polishing object 1. Make a reciprocating movement in the crossing direction. At this time, the magnetic polishing liquid 3 is supplied to the periphery of the shaft tool 2, and the polishing object 1 is fed and moved in the longitudinal direction.

  There is a magnetic polishing liquid 3 between the shaft tool 2 and the object 1 to be polished. The magnetic polishing liquid 3 contains magnetic particles such as ferrite particles and iron powder, and the permanent magnet 20 keeps the magnetic polishing liquid 3 in time. When a magnetic field or a variable magnetic field is applied, a magnetic cluster is generated. That is, a large number of magnetic particles such as ferrite particles and iron powder in the magnetic polishing liquid are aggregated into a magnetic cluster by the magnetic attractive force. As described above, magnetic particles such as ferrite particles and iron powder function as abrasive grains for polishing, and the magnetic cluster itself becomes a magnetic brush that performs fine cutting. A large number of magnetic brushes are arranged in a needle shape in opposition to the polishing object 1 along the magnetic flux, and ferrite particles that perform an abrasive action are held down on the surface of the polishing object 1. At this time, since the axial cutting tool 2 and the object 1 to be polished move relative to each other, the ferrite particles move while making contact with the surface of the object 1 to be finely cut. Therefore, surface treatment by a non-contact fine cutting action can be performed.

  In this way, a plurality of the axial cutting tools 2 for magnetic polishing are arranged, and each of them performs a movement operation such as rotation, and the entire array is reciprocated in the crossing direction with respect to the feed path of the polishing object 1. As a result, the entire array of axis tools 2 functions as one tool.

  Since a plurality of the axial tools 2 are arranged, the region of the non-contact cutting action is naturally widened in the array. Since the polishing object 1 is fed and moved, the reciprocating movement of the row of the shaft tools 2 and the feeding movement of the polishing object 1 can be synchronized so that the shaving action on the moving surface can be made uniform. That is, the unevenness due to the difference in peripheral speed in each axis cutting tool 2 does not occur, and polishing with high flatness can be performed over a wide region.

  Therefore, it is possible to maintain a non-contact state in which an external force is not applied to a film-like object that is a thin film and has a relatively large width, perform a fine shaving operation without unevenness, and obtain good flatness. As a result, the surface treatment can be performed efficiently.

  Further, with respect to the arrangement of the axis tools 2, the reciprocating direction is set to a predetermined oblique direction with respect to the feed path of the polishing object 1. Since a superposed portion is formed on 2, the shaving action can be moved so as to sequentially correct the unevenness of the polishing ability in each axis tool 2. For this reason, the feed movement of the polishing object 1 has a wider synchronization range with respect to the reciprocating movement of the row of the axis tools 2 and can be set at a higher speed, thereby increasing the efficiency.

  As described above, since the magnetic polishing liquid 3 contains magnetic particles such as ferrite particles and iron powder and a solvent, the magnetic particles such as ferrite particles and iron powder have a function of forming a magnetic cluster in so-called magnetic polishing, and polishing. The function of the abrasive material (abrasive grain) will be exhibited. That is, the magnetic cluster itself becomes a magnetic brush that performs fine cutting, and magnetic particles such as ferrite particles and iron powder that are abrasive grains do not stay in the magnetic brush due to the magnetic field of the permanent magnet 20 and do not ooze out. Therefore, there is no contamination of the processed surface and there is no decrease in abrasive grains, so that surface treatment with a fine cutting action can be performed with high efficiency.

  Since magnetic particles such as ferrite particles and iron powder are magnetized, and the magnetic clusters themselves become magnetic brushes for polishing, the degree of adhesion of the magnetic brush attached to the magnetic bite is increased and linked to the axial bite 2. The response of the magnetic brush is improved, and this also increases the polishing efficiency.

  Further, when dirt such as organic matter adheres to the surface of the object 1 to be polished, the organic substance has the same hardness as that of the object 1 to be polished, so that it can be easily scraped off and magnetic by magnetic particles such as ferrite particles and iron powder. It can be easily removed by the fine shaving action of the brush, and so-called cleaning can be performed as a surface treatment without damaging the surface of the polishing object 1.

(Second Embodiment)
3 and 4 show a second embodiment of the present invention. In the present embodiment, the configuration for performing the surface treatment by the fine shaving action is provided with a plurality of the axial cutting tools 2 having the magnetic field generating source (permanent magnet 20) arranged, but the array of the axial cutting tools 2 is arranged with at least two rows. The arrangement is such that the two before and after viewed from the row direction are displaced by a predetermined overlap. The same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  In this case, the alignment row of the axial tools 2 shows the characteristics obtained by combining the single characteristics shown in FIG. 1 in the case of magnetic polishing (fine cutting), and the two before and after viewed from the row direction are displaced by a predetermined overlap. Because of the arrangement, the single characteristics overlap at the misalignment position as shown in an enlarged view in FIG. 4B, and the characteristics exhibited as a whole become flat as shown in FIG. That is, as seen from the direction of the reciprocating movement that is the row direction, there are overlapping portions on the adjacent shaft tools 2, so that the movement in the row direction simply corrects uneven polishing ability in each shaft tool 2 sequentially. It is the movement of the cutting action. For this reason, the feed movement of the polishing object 1 has a wider synchronization range with respect to the reciprocating movement of the row of the axis tools 2 and can be set at a higher speed, thereby increasing the efficiency.

(Verification by experiment)
The sample was polished by the arrangement of the axial tools shown in FIGS. That is, in order to demonstrate the effect of the present invention regarding the surface treatment, the polishing target was polished under predetermined polishing conditions, and the surface roughness Ra (arithmetic average roughness) and Ry (maximum roughness) after polishing were evaluated.

  The magnetic polishing liquid 3 was prepared by using iron powder, vegetable oil and fat, and a resin agent as a composition and mixing them uniformly.

  The polishing object 1 was a film-like object having a thickness of 50 μm and a width of 25 mm formed by rolling copper, and the surface thereof was polished.

  The shaft tool 2 had an outer diameter of 8 mm, and the permanent magnet 20 at the tip also had the same outer diameter of 8 mm. The row of the axis tools 2 was adjusted to a height position where the tips (permanent magnets 20) faced the polishing object 1 with an interval of 1.0 mm, and each axis tool 2 was rotated at a rotational speed of 500 rpm. . The row of the axis tools 2 is reciprocated in the crossing direction with respect to the feed path of the polishing object 1, and the reciprocating movement is performed at a speed of 5 mm / sec with respect to the width of 25 mm of the polishing object 1. It was. At this time, the polishing object 1 was moved at a speed of 0.1 mm / sec to perform surface polishing for a length of 120 mm.

  That is, when the measurement was carried out with a polishing time of 20 minutes, the results shown in FIG. 5 for the surface roughness were obtained. Here, it was confirmed that Ra = 0.159 μm and Ry = 1.330 μm before polishing, but Ra = 0.026 μm and Ry = 0.155 μm after polishing.

  As is apparent from FIG. 5, the surface roughness is obtained at a level of about 1/10, and the surface can be polished well. As a result, it was confirmed that surface treatment such as mirror finishing can be performed efficiently and satisfactorily.

It is a graph which shows the axial bite for magnetic polishing, and its characteristic. It is the perspective view (a) which shows the 1st Embodiment of this invention, and its top view (b). It is a top view which shows the 2nd Embodiment of this invention. These are the characteristics (a) and the characteristics (b) and (c) obtained by enlarging a part of the characteristics (a) in the array of axis bytes shown in FIG. It is a graph of the grinding | polishing result by the row | line | column of the axis | shaft byte shown in FIG.

Explanation of symbols

1 Polishing object (object)
2-axis tool 20 Permanent magnet (magnetic field source)
3 Magnetic polishing liquid (magnetic paste)

Claims (4)

A surface treatment method for a film-like object in which a surface treatment is performed by a fine shaving action by interlocking a magnetic paste that is present in the periphery with a shaft bite facing a film-like object in a non-contact manner. ,
The object is moved in a predetermined direction, and a plurality of the shaft tools are arranged by providing a magnetic field generating source at the tip. The magnetic paste is mixed with abrasive grains that exhibit a fine shaving action, and the object and the shaft bite are mixed. A film-like object characterized by being subjected to surface treatment by a non-contact fine shaving action by applying a temporally steady or fluctuating magnetic field to the magnetic paste by a magnetic field of the magnetic field generation source. Surface treatment method for objects.   The surface treatment method for a film-like object according to claim 1, wherein a reciprocating movement is performed on the array of the axis cutting tools so as to intersect the feeding path of the object in an oblique direction.   The array of the axis bytes is an array in which at least two rows are arranged, and the two before and after viewed from the column direction are arranged to be shifted by a predetermined overlap. A method for surface treatment of the film-like object described. A surface treatment apparatus for a film-like object that performs a surface treatment by a fine shaving action by causing an axial tool tool to face a non-contact surface of a film-like object and interlocking with a magnetic paste present in the periphery. ,
A plurality of the axial tools are arranged by providing a magnetic field generating source at the tip,
The arrangement of the axis tools is set so that each of the movements such as rotation is performed by driving of the driving means and the reciprocating movement is performed in the crossing direction with respect to the feeding path of the object,
The magnetic paste is mixed with abrasive grains exhibiting a fine shaving action and is present between the object and the shaft bite, and the magnetic paste is constantly or fluctuating in time due to the magnetic field of the magnetic field generation source. A surface treatment apparatus for a film-like object characterized in that a surface treatment by a non-contact fine cutting action can be performed by applying a magnetic field.

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