JP2008290179A - Columnar cutting tool for surface treatment of film-like object and surface treatment apparatus therewith - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a columnar cutting tool for a surface treatment of a film-like object and a surface treatment apparatus therewith, capable of performing an efficient surface treatment by a fine cutting operation, while maintaining a non-contact state with no external force applied to the film-like object. <P>SOLUTION: A permanent magnet 20 is provided at an outer circumference of a columnar cutting tool 2 as a magnetic field generation source and is linked to drive means. A plurality of the permanent magnets 20 are arranged at the outer-circumference of a bar-like body while extending in the longitudinal direction thereof in a belt-like shape. The permanent magnetic 20 is brought to face a polishing object 1 in a non-contact manner and a magnetic polishing liquid 4 is allowed to be present in the vicinity thereof. The columnar cutting tool 2 is made to perform a specified motion by activating the drive means, and fluid polishing is performed by a magnetic cluster (a magnetic brush) generated in the magnetic polishing liquid 4 which is present in the vicinity thereof. A magnetic field generating source (20) is a belt-like shape, extending in the longitudinal direction of the bar-like body and by which an action range of the magnetic field is widened. Therefore, an action of the magnetic field is enhanced for a wider area and preferably applicable to film-like polishing objects. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a columnar tool for surface treatment of a film-shaped body such as a metal ribbon or a resin film, and a surface treatment apparatus using the same, and more specifically, a film shape having a relatively large width as a thin film The present invention relates to improvement of a bite for fine cutting action on an object such as a body.

  In the case of a thin film film with a relatively wide width, such as a metal ribbon or a resin film, surface treatment is required to modify the surface properties during production, and the surface is polished, washed and cleaned. Surface treatment such as is performed.

  One of the surface treatments is a mirror finish, which is an important surface treatment even for the above-described film shape. 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-shaped body is a thin film, there is a problem that it can be quickly 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 known as a precision polishing technique capable of performing mirror finish. 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.

  The polishing tool has a permanent magnet as a magnetic field generation source. When a magnetic polishing liquid (paste material) is attached around the polishing tool, ferromagnetic particles (for example, iron particles) in MF and MRF by magnetic attraction force, A large number of magnetite particles aggregate to form a magnetic cluster. 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 polishing bite 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, since the film-shaped body is a thin film and has a relatively large width, there is a problem that the efficiency is not improved if it is simply applied. .

  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 an object such as a film-shaped body having a relatively thin width and a fine shaving. An object of the present invention is to provide a columnar bite for surface treatment of a film-like object capable of efficiently performing surface treatment by action and a surface treatment apparatus using the same.

  In order to achieve the above-described object, the columnar bite for surface treatment of a film-like object according to the present invention maintains a non-contact state with respect to the film-like object and is a magnetic paste that is present in the periphery. The columnar bite is provided with a plurality of magnetic field generating sources such as permanent magnets on the outer periphery of the rod-shaped body, and the magnetic field source is a band extending in the longitudinal direction of the rod-shaped body. The rod-shaped main body is configured to perform a predetermined motion operation on an axis along the longitudinal direction by driving of a driving means connected to at least one end of the rod-shaped main body.

  The surface treatment apparatus using the columnar bite includes the columnar bite and driving means for performing a predetermined motion operation in conjunction with the columnar bite. The columnar bite has a magnetic field generation source with respect to the object. It is arranged to face non-contact, the magnetic paste is mixed with abrasive grains that exhibit a fine shaving action, the magnetic paste is present between the object and the columnar bite, and the driving means is activated The columnar tool is configured to perform a predetermined motion and apply a surface treatment by a non-contact fine cutting action by applying a temporally steady or fluctuating magnetic field to the magnetic paste by the magnetic field of the magnetic field generation source ( Claim 2).

  Further, in an arrangement in which the columnar bite is located above the object, an upper cover that covers the columnar bite from above can be provided, and the magnetic paste that scatters during operation can be retained and dropped downward (claim) Item 3).

  Further, in the arrangement in which the columnar bite is positioned below the object, a lower cover that covers the columnar bite from below can be provided so that the magnetic paste that scatters during operation can be retained and flowed downward (claims). Item 4).

  In the composition of the magnetic paste, the abrasive grains may be magnetic particles having magnetism such as ferrite particles and metal particles.

  Therefore, in the present invention, the columnar tool for magnetic polishing is provided with a plurality of magnetic field generating sources such as permanent magnets on the outer periphery thereof, and the magnetic field generating source has a strip shape extending in the longitudinal direction of the rod-shaped main body. The field of action of the magnetic field that faces is widened. For this reason, the effect | action of a magnetic field can be performed with respect to a wide area, and it can respond suitably to a film-like target object.

  In the columnar bite according to the present invention, a plurality of magnetic field generation sources such as permanent magnets are provided on the outer periphery, and the magnetic field generation source has a strip shape extending in the longitudinal direction of the rod-shaped main body. The area of action becomes wider. For this reason, the effect | action of a magnetic field is exhibited with respect to a wide area, and it can respond suitably to a film-like target object. Therefore, according to the columnar bite and the surface treatment apparatus using the same according to the present invention, a non-contact state in which an external force is not applied to an object such as a thin film-shaped object having a relatively large width is maintained. Therefore, surface treatment by a fine shaving action can be performed efficiently.

(First embodiment)
1 and 2 show a first embodiment of the present invention. In this embodiment, the surface treatment apparatus includes a columnar tool 2 having a magnetic field generation source (permanent magnet 20). The polishing object 1 is fixed to the support base 3, and the columnar cutting tool 2 is disposed so as to face the polishing object 1 in a non-contact manner, and a magnetic paste (magnetic polishing liquid 4) is present between the polishing object 1 and the columnar tool. The cutting tool 2 is activated by a driving means 5 linked thereto to perform a predetermined motion, and fluid polishing is performed by a magnetic cluster generated in the magnetic polishing liquid 4.

  As the polishing object 1, 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 to have a relatively large width. The columnar bite 2 is provided with a permanent magnet 20 on the outer periphery of the rod-shaped main body to serve as a magnetic field generation source. The permanent magnets 20 serving as the magnetic field generation source have a strip shape extending in the longitudinal direction of the rod-shaped main body, and a plurality of permanent magnets 20 are arranged on the outer periphery. The magnetic field generation source is not limited to the permanent magnet 20 but may be an electromagnet, for example, as long as it can act on the magnetic polishing liquid 4. The generated magnetic field does not have to be stationary in time, and a temporally varying magnetic field may be generated. Further, the columnar bite 2 has a circular cross-sectional shape in the present embodiment, but is not limited thereto, and may be, for example, a quadrangular shape or a polygonal shape.

  The driving means 5 is connected to at least one end of the columnar cutting tool 2 and starts up the driving means 5 to cause the columnar cutting tool 2 to perform a predetermined rotating operation on the axis along the longitudinal direction. Alternatively, instead of the rotation operation, for example, an appropriate motion operation such as a reciprocation operation in which a forward rotation and a reverse operation are alternately repeated may be performed. As the driving means 5, for example, an NC machine tool may be used, and the shaft portion of the columnar tool 2 is attached to and detached from a rotating shaft (chuck portion) such as a drilling machine, a lathe, an NC lathe, or a milling machine. Further, driving means for vibration driving can be connected to the support base 3, and the support base 3 can be vibrated by driving the driving means.

  The magnetic polishing liquid 4 contains two components of magnetic particles and a solvent. Vegetable oil or the like is used as the solvent. This magnetic polishing liquid 4 is supplied by a supply means between the object 1 and the columnar 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 show ferromagnetism and have magnetization. Therefore, when a magnetic field is applied, the particles form magnetic clusters. The same applies to magnetizable metal particles such as iron powder. When a magnetic field is applied, the particles form magnetic clusters. The metal particles such as ferrite particles and iron powder, which are ceramics, are sufficiently hard for the film-shaped body of the object 1 to be polished, and thus can function as abrasive grains for polishing. Thus, a magnetic brush for performing a surface treatment by a precise cutting action is obtained. Further, since the abrasive particles themselves have magnetism, the adsorption effect is enhanced and scattering can be prevented.

  As described above, the motion of the columnar tool 2 is performed by a predetermined motion such as a simple rotational motion or a reciprocating motion that repeats normal rotation and reverse rotation. At this time, the magnetic polishing liquid 4 may be supplied to the periphery of the columnar bite 2 and the polishing target 1 may be caused to perform a predetermined vibration operation by vibrating the support base 3.

  There is a magnetic polishing liquid 4 between the columnar tool 2 and the object 1 to be polished, and the magnetic polishing liquid 4 contains magnetic particles such as ferrite particles and iron powder, and the permanent magnet 20 keeps the magnetic polishing liquid 4 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 by the magnetic attractive force to form a magnetic class. As described above, magnetic particles such as ferrite particles and iron powder function as abrasive grains for polishing, and the magnetic clusters themselves become magnetic brushes that perform precise shaving. 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 columnar tool 2 and the object 1 to be polished move relative to each other, the ferrite particles move while being in contact with the surface of the object 1 to be polished precisely. Therefore, it is possible to perform a surface treatment by a precise cutting action.

  As described above, the columnar bite 2 for magnetic polishing is provided with a plurality of magnetic field generation sources by the permanent magnets 20 on the outer periphery, and the magnetic field generation source (20) has a strip shape extending in the longitudinal direction of the rod-shaped main body. The field of action of the magnetic field facing non-contact with 1 is widened. For this reason, the effect | action of a magnetic field is exhibited with respect to a wide area, and it can respond | correspond suitably with respect to grinding | polishing objects 1 such as a film-shaped body with a large width.

  Therefore, a non-contact state in which an external force is not applied to an object such as a film-shaped body that is a thin film and has a relatively large width can be maintained, and surface treatment by a fine shaving action can be efficiently performed.

  As described above, since the magnetic polishing liquid 4 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, which are abrasive grains, remain 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 by a precise cutting action can be performed with high efficiency.

  Since magnetic particles such as ferrite particles and iron powder are magnetized, and the magnetic cluster itself becomes a magnetic brush for polishing, the degree of adhesion of the magnetic brush attached to the magnetic bite is increased and interlocked with the columnar 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 and can be easily scraped off. 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.

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

  Two types of magnetic polishing liquid 4 were prepared by using iron powder, vegetable oil or fat or water, and a resin agent, and mixing them uniformly. That is, the magnetic polishing liquid S is obtained by using vegetable oil as a solvent, and the magnetic polishing liquid L is obtained by using water as a solvent.

  The object 1 to be polished was a film-shaped body having a thickness of 50 μm formed by rolling Ag, and the surface was polished. The position of the columnar cutting tool 2 is adjusted to face the polishing object 1 with an interval of 1.0 mm, and the polishing object 1 is caused to reciprocate on the support 3 at a speed of 20 mm / sec. Was rotated at 500 rpm.

When the measurement was performed while changing the polishing time, the results shown in Table 1 and FIG. 3 were obtained for the surface roughness Ra.

  As apparent from Table 1 and FIG. 3, the polishing time is about 10 minutes and the surface roughness Ra is about 25 nm to 29 nm, 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.

(Second Embodiment)
FIG. 4 shows a second embodiment of the present invention. In this embodiment, the surface treatment apparatus has an arrangement in which the columnar cutting tool 2 is positioned above the object 1 to be polished, is provided with an upper cover 6 that covers the columnar cutting tool 2 from above, and holds the magnetic polishing liquid 4 scattered during operation. It is configured to drop downward. The same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  The object 1 to be polished is a film-shaped body, which is fed from the upstream supply roll 7 and wound around the downstream winding roll 8. For this purpose, a plurality of guide rollers 9 are appropriately arranged on the upstream side and the downstream side with the support base 3 in the center, and a supply nozzle 10 for discharging the magnetic polishing liquid 4 is arranged on the upstream side in the transport path. A cleaning nozzle 11 for discharging the cleaning liquid is disposed on the downstream side.

  At the time of magnetic polishing, a large amount of the magnetic polishing liquid 4 stays at the portion of the columnar bit 2 due to the magnetic field of the magnetic field generation source 20, but scattering occurs as the columnar bit 2 moves. In this case, the scattered magnetic polishing liquid 4 is caught by the upper cover 6 and dropped downward, and adheres onto the polishing target 1, so that the supply again starts. Therefore, the scattered magnetic polishing liquid 4 can be reused cyclically, and magnetic polishing can be performed efficiently. As a result, it is possible to more efficiently perform surface treatment work by a fine shaving action on an object such as a film-shaped body that is a thin film and has a relatively large width.

(Third embodiment)
FIG. 5 shows a third embodiment of the present invention. In this embodiment, the surface treatment apparatus has an arrangement in which the columnar cutting tool 2 is positioned below the object 1 to be polished, and is provided with a lower cover 12 that covers the columnar cutting tool 2 from below, and holds down the magnetic paste scattered during operation. It is configured to flow down. The same components as those in the other embodiments described above are denoted by the same reference numerals, and the description thereof is omitted.

  In this case, since the columnar tool 2 is arranged below (behind) the object 1 to be polished, the scattered magnetic polishing liquid 4 is held by the lower cover 12 and dropped, and collected at the bottom of the lower cover 12 to be magnetically polished. When the accumulation level of the liquid 4 exceeds a predetermined level, the columnar bite 2 comes into contact with the pooled part, so that it adheres to the surface of the columnar bite 2 in motion and starts to be supplied again. Therefore, the scattered magnetic polishing liquid 4 can be reused cyclically, and magnetic polishing can be performed efficiently. As a result, it is possible to more efficiently perform surface treatment work by a fine shaving action on an object such as a film-shaped body that is a thin film and has a relatively large width.

(Fourth embodiment)
FIG. 6 shows a fourth embodiment of the present invention. In this embodiment, the surface treatment apparatus includes two columnar tools 2 and is arranged above and below the object 1 to be polished and fluidly polishes the front and back of the object 1 at the same time. The upper columnar bite 2 is provided with an upper cover 6 and covered from above, and the magnetic polishing liquid 4 scattered during operation is retained and dropped downward, while the lower columnar bite 2 is provided with a lower cover 12 The magnetic paste that scatters during operation is retained and allowed to flow downward. The same components as those in the other embodiments described above are denoted by the same reference numerals, and the description thereof is omitted.

  In this case, since the columnar tool 2 is arranged on the front and back of the object 1 to be polished, both the front and back surfaces can be polished simultaneously. Then, on the surface side of the polishing object 1, the scattered magnetic polishing liquid 4 hits the upper cover 6 and drops downward, and adheres onto the polishing object 1, so that the supply starts again. Further, the portion that drops downward from the side of the polishing object 1 is directed to the lower cover 12. On the back surface side of the object 1 to be polished, the scattered magnetic polishing liquid 4 hits the lower cover 12 and drops and accumulates on the bottom of the lower cover 12, and when the accumulation level exceeds a predetermined level, the surface of the columnar bite 2 during the movement operation Then, the supply starts again.

  Therefore, the scattered magnetic polishing liquid 4 can be reused cyclically on both the front side and the back side of the polishing object 1, and the magnetic polishing can be performed efficiently. As a result, it is possible to more efficiently perform surface treatment work by a fine shaving action on an object such as a film-shaped body that is a thin film and has a relatively large width.

1 is a perspective view showing a first embodiment of a surface treatment apparatus according to the present invention. It is a side view of the surface treatment apparatus shown in FIG. It is a graph which shows the relationship between polishing time and surface roughness. It is a perspective view which shows 2nd Embodiment of the surface treatment apparatus which concerns on this invention. It is a perspective view which shows 3rd Embodiment of the surface treatment apparatus which concerns on this invention. It is a perspective view which shows 4th Embodiment of the surface treatment apparatus which concerns on this invention.

Explanation of symbols

1 Polishing object (object)
2 Columnar tool 20 Permanent magnet (Magnetic field source)
3 Support base 4 Magnetic polishing liquid (magnetic paste)
5 Driving means 6 Upper cover 7 Supply roll 8 Take-up roll 9 Guide roller 10 Supply nozzle 11 Cleaning nozzle 12 Lower cover

Claims (5)

A columnar bite that performs a surface treatment by a fine shaving action by keeping a non-contact state with respect to a film-like object and interlocking with a magnetic paste present in the periphery,
The columnar tool is provided with a plurality of magnetic field generating sources such as permanent magnets on the outer periphery of the rod-shaped main body,
The magnetic field generating source has a strip shape extending in the longitudinal direction of the rod-shaped main body, and the rod-shaped main body performs a predetermined motion operation on an axis along the longitudinal length by driving of a driving means connected to at least one end of the rod-shaped main body. A columnar tool for surface treatment of film-like objects. The columnar bite according to claim 1, and driving means for performing a predetermined motion operation in association with the columnar bite,
The columnar bite is disposed so that the magnetic field generation source faces the object in a non-contact manner, and the magnetic paste is mixed with abrasive grains that exhibit a fine shaving action, and the magnetic paste is the object The columnar bite is caused to move between the object and the columnar bite, and the driving means is activated to cause the columnar bite to perform a predetermined motion. A surface treatment apparatus characterized by applying a fluctuating magnetic field and performing surface treatment by a non-contact fine cutting action.   In the arrangement in which the columnar bite is positioned above the object, an upper cover is provided to cover the columnar bite from above, and the magnetic paste that scatters during operation is held by the upper cover and dropped downward. The surface treatment apparatus according to claim 2.   In the arrangement in which the columnar bite is positioned below the object, a lower cover is provided to cover the columnar bite from below, and the magnetic paste that scatters during operation is held by the lower cover to flow downward. The surface treatment apparatus according to claim 2.   5. The surface treatment apparatus according to claim 2, wherein the composition of the magnetic paste is such that the abrasive grains are magnetic particles having magnetism such as ferrite particles and metal particles.

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