JP2005138128A - Apparatus for working plate-shaped work, and method for manufacturing metallic filter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for working a plate-shaped work which can reduce the number of part items and cost, shorten a working time, decrease the wear of a working blade and improve the service life of the apparatus and the working rate, and to provide a method for manufacturing an exhaust gas cleaning metallic filter by using the apparatus. <P>SOLUTION: This apparatus 1 for working the plate-shaped works W to be continuously fed is composed of: a pair of shafts S which are pivotally supported on the main body 10 and opposed with a prescribed interval; at least a pair of first discs which are attached to the shafts by making the axial center in common, respectively arranged in parallel on the shaft in a prescribed order and have projections the tip of which is acutely formed on the outer periphery and engaged with each other; and at least a pair of second discs which have corrugated teeth on the outer periphery, are engaged with each other and opposed. In the working apparatus and the manufacturing method, through holes are bored while forming corrugated shape by holding the plate-shaped works W to be fed between the engaging parts P of respective discs. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a corrugated continuous workpiece in the workpiece feeding direction, a machining apparatus for drilling a large number of through holes, and the like on a flat workpiece (work; for example, a belt-shaped metal plate).

Japanese Patent Laid-Open No. 9-245938 JP 2002-47915 A JP 2003-285129 A

Conventionally, as a metal filter used in an exhaust gas purifying apparatus for automobiles, corrugated or uneven press molding is performed in the longitudinal direction of a metal sheet material extending in a strip shape, and a number of through holes are opened in the longitudinal direction. Is known in which a protrusion extending substantially perpendicular to the surface of the metal sheet is formed (see Patent Documents 1 and 2). In addition to the example in which the part forming the mold and ii) the part in which the through-hole is drilled are driven by different motors while being electrically monitored by sensors or the like, both parts based on one drive source An example is known in which these are mechanically connected and linked in a timely manner (see Patent Document 3).
In addition, the structure of ii) in which a plurality of through holes are drilled in a belt-shaped metal plate is as follows: when the pressing parts that are pressed or separated from each other for punch pressing are not operated, that is, the upper mold and the lower mold are mutually connected. While being separated, the feeding unit supplies a metal plate as a workpiece between the upper die and the lower die, both of which are provided with drilling projections, and feeds the metal plate by a predetermined feed amount. Examples include a case in which a plurality of through holes are drilled in the press working part by pressing (punching) the metal plates against each other with the upper die and the lower die after being stationary (see Patent Document 3).

However, the quality of these devices depends on the performance of sensors, etc. In addition to the large number of parts, the cost increases and the configuration becomes complicated, and all the drilling holes on the workpiece are opposed to each other. In the press die (upper die and lower die) of the processing part, it was necessary to cover with the protrusions (blades) for drilling arranged in the width direction of the workpiece. It was complicated because it was necessary to change the press die including the protrusions frequently.
Further, when the punching press performs linear reciprocating motion in conjunction with the timing at which the workpiece is fed, it is complicated to control these linkage operations, and it is difficult to increase the feeding speed. there were.

Accordingly, the present invention can reduce the number of control parts including the sensors, the press drive mechanism, and other parts while maintaining high machining accuracy, reduce the cost, and promote further shortening of the machining time. It is an object to obtain a processing apparatus.
Another object of the present invention is to provide a processing apparatus for a flat workpiece that can dramatically reduce the fatigue and wear of the processing blade and can improve the life and operating rate of the entire processing apparatus.
Furthermore, this invention makes it a subject to obtain the novel method for manufacturing the metal filter used for an exhaust gas purification apparatus using the said processing apparatus.

  As a result of various studies to solve the above-mentioned problems, the present inventor does not perform the punching of the through hole in the workpiece by the press method, but i) for forming the corrugation and ii) drilling the through hole. The workpiece is supplied to the meshing portions of the one and the other processing drums that are meshed with each other and are composed of a combination of disks having different external shapes, and i) a wave shape is formed at the meshing portions. In addition, ii) the step of forming a through-hole in the workpiece in parallel is performed continuously by rotating the drum while supplying the workpiece (rotary type), and is formed in a gear shape. The present invention has been completed by finding that a desired workpiece can be processed by biting the disc or the metal filter can be manufactured.

The processing apparatus of the present invention capable of solving the above-described problems is an apparatus for processing a continuously supplied flat plate-like workpiece, and is supported on a main body and is paired with a predetermined distance to face each other. A shaft and a shaft (shaft) attached to each of the shafts in common, arranged in parallel in a predetermined order on the shaft, and having protrusions (blades) with sharp tips on the outer periphery, which mesh with each other. At least one pair of first disks opposed to each other, and at least one pair of second disks having corrugated teeth (molded teeth) on the outer periphery and opposed to each other. A through hole is formed in the work piece while forming a corrugated shape by sandwiching a flat work piece supplied to the section.
Furthermore, the present invention is a method for manufacturing a metal filter used in an exhaust gas purifying apparatus for an internal combustion engine, wherein a workpiece is sandwiched between meshing portions of each disk of the processing apparatus to form a corrugated shape. However, a metal filter is manufactured by drilling through holes in the workpiece.

In this specification, even when the processing apparatus of the present invention is used in a state of being rolled over, for example, the vertical, horizontal, vertical / horizontal or other orientations attached to the names of the respective components of the processing apparatus are indicated. The symbols and names that are designated shall be used without change.
In addition, the “wave shape” referred to in this specification does not necessarily indicate only a sinusoidal curve as shown in FIG. 11 or 12 described later, but a known triangular wave shape, sawtooth shape, pulse It is assumed that various uneven shapes including a shape are formed.
Similarly, “meshing” does not necessarily refer to a state in which the respective gears or discs are engaged with each other without so-called “play”, but at least the opposing both are combined and can operate while acting on each other. I will refer to things.

  According to the present invention, it is possible to quickly form a corrugation, drill a through hole, and form a protrusion around the corrugated hole by a simple process. Therefore, it is possible to simplify the processing apparatus by reducing the number of parts. Further, by repeating the separation / proximity of the opposed press dies, a conventional apparatus that forms a through-hole in a continuously supplied workpiece and forms a protrusion around it, all of this is performed when processing the workpiece. Although it was necessary to cover with the protrusions (blades) disposed on the pair of press dies (upper mold and lower mold), according to the present invention, a large number of protrusions (blades) disposed at a predetermined pitch on the disk circumference. ) Can be used in sequence, the blade fatigue and wear can be greatly reduced, and the life and operating rate of the entire processing apparatus can be improved.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
1 and 2 are a front view and a right side view of the processing apparatus of the present invention, FIGS. 3 to 5 are diagrams showing an example (type A) of first and second disks and gears, and FIG. FIG. 7 is a diagram illustrating an example (type A) of the meshed state of the second disk, FIGS. 7 to 9 are diagrams illustrating another example (type B) of the first and second disks and gears, and FIG. The figure which shows another example (type B) of the engagement state of a 2nd disk, FIG.11 and FIG.12 is an external appearance perspective view and side view of the metal filter obtained by the processing apparatus of this invention, FIG. 13 is an enlarged view of a through-hole. However, it is a figure which shows the outline shape which the protrusion part bent and formed in the circumference | surroundings simultaneously with drilling of a through-hole should have.

First, a usage form of a metal filter (as shown in FIGS. 11 and 12 described later) obtained using the apparatus and method of the present invention will be briefly described.
In this embodiment, including the examples described below, when the metal filter F is incorporated into the exhaust gas purification device, the filter cell is formed by rolling it up into a roll shape. In other words, a strip-shaped metal filter F in which a large number of through holes Ha and Hb are formed, and projecting portions 4 (generally referred to as the first projecting portions 41 to 44; hereinafter the same) are formed around the perforations Ha and Hb. Is wound up by a winding device (not shown) provided downstream of the processing apparatus 1 of the present invention as illustrated in FIG. 1 to form a filter cell. This filter cell is used to capture and remove unburned particles (PM) in the exhaust gas discharged from the engine.
Here, the through holes Ha and Hb have a function of increasing the PM filter collision probability and the residence time in the filter by allowing the PM to move in the filter radial direction. Further, the protrusions 41 to 44 compensate for the decrease in the PM contact area due to the provision of the through holes Ha and Hb, increase the PM filter collision probability, block the PM straight travel, and the PM residence time in the filter Has the function of extending

  The processing apparatus of the present invention is used, for example, to manufacture a metal filter that captures PM by drilling a large number of fine through-holes while feeding a strip-shaped metal plate while forming a corrugation in the metal plate. As shown in FIGS. 1 and 2, there are provided processing drums (LX, LY) on one side and the other side that are pivotally supported on the machine end plate 11 of the main body 10 and mesh with each other. A winding device (not shown) that winds a corrugated metal plate in which a large number of through-holes are formed to serve as a filter cell is disposed downstream of the processing device 1.

  Next, the processing apparatus and method of the present invention outlined above will be described in more detail with an example. In the description, the above figures are used.

[Constitution]
As shown in FIG. 1 or FIG. 2, the processing apparatus 1 of this embodiment is attached to a shaft S, and meshes with each other to form a flat metal plate into a corrugated shape and drill a through hole in parallel therewith. The processing drums LX and LY on one side and the other side that perform the feeding operation are provided. These are incorporated in the main body 10 in a manner similar to a music box performance section.

  As shown in FIG. 1 or 2, the main body 10 extends in the vertical direction from the bottom plate 13, the opposite machine end plates 11 extending in parallel to the vertical direction at a predetermined interval from the bottom plate 13, and the bottom plate 13. It consists of the bottom plate 13 and the back plate 12 in contact with any of the opposite machine end plates 11, and these are appropriately connected using bolts 14 and nuts 15. Both ends of the shaft S are pivotally supported by opposing machine end plates 11 extending in parallel at a predetermined interval. Further, as shown in FIG. 2, the back plate 12 is provided with an opening 16 for taking out a workpiece at a portion corresponding to the horizontal position of the meshing portion P of the processing drums LX and LY.

  As shown in FIG. 1 and FIG. 2, each processing drum LX, LY has a gear S (GX or GY) and first and second disks (D1 and D2) on one side or the other side around the shaft S. Are arranged in parallel with a common shaft center. As shown in FIGS. 3 to 5 and FIGS. 7 to 9, the discs and gears have shaft insertion holes 17 as well as the axial direction of the shaft S. In addition to a key K having a size that matches a key groove provided in the shaft, an auxiliary hole 18 for passing two auxiliary shafts parallel to each other and parallel to the shaft S is provided. The position shift is not caused. The configuration of each disk and the gear itself will be described later.

Each of the processing drums LX and LY of the present invention is opposed to the first disk D1 that meshes with the opposite counterpart disk of the same type to form a flat metal plate into a corrugated shape and performs a feeding operation. The second disk D2, which is engaged with the same type of disk on the other side and drills through holes in the metal plate and performs the feeding operation, alternately in the axial direction or in the width or width direction of the workpiece. According to the number of through-holes provided and other required specifications (product processing specifications), they are arranged in an appropriate order.
In this embodiment, the thickness of the first disk is t = 1 mm, and the thickness of the second disk is t = 0.5 mm. Following the gear GX on one side or the gear GY on the other side, as shown in FIG. The first disk D1, the second disk D2, the first disk D1,... The second disk D2, and the first disk D1 are alternately arranged in parallel on these rotating shafts. In this embodiment, 33 first discs 1 and 32 second discs 2 are alternately arranged in parallel on the shaft S, and one side and the other side are processed by these including some play. Drums LX and LY are formed so that the metal filter F can be processed.

The functions and configurations of the disks D1 and D2 will be described in more detail. A protrusion (blade) 3 having a sharp tip (pyramidal shape or conical shape or the like) formed on the outer periphery, illustrated in FIG. 3 or FIG. The first disk D1 that is engaged and opposed to each other has through-holes Ha and Hb formed in the workpiece W by the protrusions 3 (see FIG. 11 or 12), and the protrusions 4 are formed around the holes. On the other hand, the second disk D2 having a corrugated tooth (molded tooth) 6 on the outer periphery and opposed to each other as illustrated in FIG. 4 or FIG. It functions to form a sequential wave pattern by sandwiching the flat plate-like workpiece W to be supplied. In this embodiment, both the first disk D1 and the second disk D2 are made of hardened steel in consideration of durability.
In addition, the transmission teeth T are appropriately disposed on the outer circumference of the gears GX and GY on the one side and the other side as in the conventionally known examples, thereby ensuring the driving or rotation of the processing drums LX and LY. Yes.

  In the case of the set of discs and gears shown in FIGS. 3 to 6 (type A), there are 60 protrusions on the circumferences of the discs D1 and D2 and the gears GX and GY at a rotation angle of about 6 °. 3 and the recessed part 5, the molding tooth 6, and the transmission tooth T are arranged. In the case of the pair of discs and gears shown in FIGS. 7 to 10 (type B), the arrangement pitch of each is about 4 °, and the number of protrusions 3 and recesses 5, molding teeth 6 and transmission teeth T is 90. It becomes. In either case of type A or type B, the shape of the protrusion 3 is a quadrangular pyramid shape, not only in the direction shown in FIG. 3 or FIG. 7, but also when viewed from the circumferential direction. The tip is sharply formed.

The first disk D1 for piercing through holes Ha and Hb illustrated in FIG. 3 or FIG. 7 (type A and type B) receives the protrusion 3 of the disk D1 with the recess 5 facing in the assembled state. (See FIGS. 6 and 10). In addition, since it is necessary to make each opposing disk and gear mesh with each other, in the set of the disk and gear according to type A (FIGS. 3 to 5), as shown in FIG. They are combined with a rotational angle of about 3 °. Also, in the set of discs and gears according to type B (FIGS. 7 to 9), as shown in FIG. 10, the two opposing discs and gears are combined in a state of being shifted from each other by about 2 ° in rotation angle. Yes.
Here, as shown in FIG. 10, the portion other than the protrusions 3 and the recesses 5 on the outer periphery of the type B first disk D1 includes the molding teeth 6 of the second disk D2 when viewed from the side. A corrugated shape corresponding to the shape is formed. In this example, the distance (corresponding to the wavelength) between the tops of the corrugations formed on the metal plate is about 4 ° pitch, that is, about 2.3 mm when the disk diameter is φ = 66 mm, for example.
In the processing apparatus 1 of the present embodiment, the distance between the central axes of the respective discs and gears can be finely adjusted as appropriate, and the workpiece W can be adjusted by adjusting the distance according to the plate thickness or the like. It is possible to change the size of the through holes Ha and Hb drilled in and the height of the protrusion 4 formed on the workpiece W.

  Further, as shown in FIGS. 6 and 10, since the positional relationship of the unevenness of the second disk D2 arranged in parallel with the first disk D1 is just opposite to that of the first disk D1, Each of the processed metal plates has protrusions 4 formed around the through holes Ha and Hb drilled at the tops of the corrugations, extending inward from the tops (FIGS. 11 and 12). reference).

[Operation]
Below, operation | movement of the processing apparatus of a present Example is demonstrated, referring FIG.1 and FIG.2.
First, when the driven gear DG provided on the shaft S is driven by a drive motor (not shown), the processing drum LX on one side coaxial with the shaft rotates, and meshes with the drum LX to face each other. The processing drum LY on the other side also rotates in conjunction with it. As described above, in this embodiment, when the driven gear DG rotates, the opposing one processing drum LX and the other processing drum LY rotate while meshing with each other, so that the one processing drum LX is driven by the driving drum. The other processing drum LY serves as a driven drum.

Next, when a flat metal plate W as a member to be processed is inserted into a meshing portion P between the one processing drum LX and the other processing drum LY, i) a wave is sequentially applied to the metal plate W. As the mold is formed, ii) the through holes Ha and Hb are drilled at the top of each formed wave pattern, and iii) and the protrusion 4 is formed around it. The metal plate (metal filter F) that has been processed in the meshing portion P is pulled out of the apparatus through the opening 16 opened in the back plate 12, and sequentially sent to a winding device (not shown) in the subsequent stage, There it is wound up in a roll.
In this embodiment, as an example of the workpiece W, a metal strip made of heat-resistant and acid-resistant stainless steel having a width of about 50 mm and a thickness of about 40 μm is used in consideration of the constant exposure to exhaust gas. The metal filter F obtained by processing this can be used for DPF (diesel particulate removal device) and other exhaust gas purification devices as described above.

  As shown in FIG. 11 and FIG. 12, substantially square through holes Ha and Hb are drilled at the tops of the corrugations of the metal filter F obtained by using the apparatus and method of the present invention, vertically and horizontally. Many are arranged. The through hole Ha has four triangular first to fourth projecting portions 41 to 44 that are bent inward from the surface and project inward at the edge portion in the drawing. Further, the through hole Hb has four triangular first to fourth protruding portions 41 to 44 that are bent inward from the rear surface and protruded in the drawing. If the sizes of the through holes Ha and Hb are too small, the passage of the exhaust gas is narrowed, and the difference (difference) in the exhaust pressure between the inlet (IN) side and the outlet (OUT) side of the exhaust gas purifier On the other hand, if the pressure is too large (for example, one side of the square is about 0.8 mm to 0.9 mm), the ability to collect PM and the like is lost. In the metal filter F obtained using the apparatus of the present embodiment, the size of the through holes Ha and Hb is adjusted so that one side of the square is about 0.1 mm to about 0.5 mm, and PM is efficiently collected. It is configured to do it.

  The interval between the holes formed in the metal filter F is about 0.2 to 3.0 mm. By configuring in this way, the exhaust gas flows in the exhaust gas purification device sequentially toward the outlet while appropriately moving in the radial direction of the exhaust gas purification device. It is possible to make it longer. Furthermore, by using several types of metal filters having different numbers of perforations per unit area and appropriately superposing fine ones and coarse ones (multilayer structure), a higher collection effect such as PM can be obtained. As an example of the multi-layer structure, a disk of type B (FIGS. 7 to 9) and a processing apparatus 1 in which a set of the disk and gears of type A (FIGS. 3 to 5) are assembled and Provided with a processing device assembled with a set of gears, supply metal plates to both processing devices to obtain two processed metal plates with different sizes of through holes or intervals between the through holes, These are stacked in layers and then rolled up into a filter cell to form a filter cell, which is attached to the exhaust gas purifier so that the exhaust gas enters the central axis direction. . The metal filter obtained by using the apparatus and method of the present invention greatly contributes to improving the PM collection performance of the exhaust gas purifying apparatus and reducing its size and weight.

As described above, according to the present invention, the formation of the corrugation and the formation of the through hole and the formation of the protruding portion around the corrugated portion are processed on the meshing portions of the processing drums on one side and the other side that are meshed with each other. Since it has been configured so that it can be performed simply by supplying an object, the configuration of the processing apparatus can be simplified and the cost of the apparatus itself can be reduced.
In addition to the need for a sensor for position detection, the opposing processing drums LX and LY can be driven by a single drive motor, and even if the rotational speed of the drive motor varies. Since the through-hole can be drilled in the metal plate reliably and accurately, the electrical control can be simplified and the number of control parts can be reduced, so that the cost of this surface can be reduced.
In addition, according to the present invention, the apparatus can be reduced in size, the occurrence of a failure can be suppressed, the life can be extended, and the maintenance can be facilitated.
Furthermore, since the perforation can be performed smoothly while feeding the metal plate, the processing time can be shortened.

In addition, this invention is not limited to the said Example, A change of various design matters is possible.
For example, in the above embodiment, the processing drums LX and LY are driven through the driven gear DG, but the drive system is not limited to this, and the output shaft of the drive motor is directly connected to one or both of the shafts S. It may be driven directly. In addition, means such as a transmission belt and a chain may be used instead of the driven gear. Further, the processing drums LX and LY of the above embodiment include gears GX and GY on one side or the other side, respectively, but these are omitted, and the first disk D1 and the second disk that are meshed with each other. Even when the machining drum is configured only from the combination of the disks D2, the workpiece can be machined by driving the machining drum without any problem.

According to the above embodiment, in the processed metal filter F, the protrusions 4 formed around the through holes Ha and Hb drilled at the tops of the corrugations extend inward from the tops. 3 or the shape of the recess 5 is appropriately changed, or the positional relationship of the unevenness of the first disk D1 and the second disk D2 arranged in parallel is shifted, so that the protrusion 4 is directed outward from the top. It is also possible to form it.
The number of protrusions 3 or molding teeth 6 arranged on the circumference of the first disk D1 or the second disk D2 is not limited to the above value, and the desired pitch can be changed by appropriately changing the arrangement pitch. Can be formed and drilled in the workpiece. The shapes of the protrusions 3, the recesses 5, or the molding teeth 6 themselves are not limited to those described in the above examples, and can be appropriately changed according to the final specifications of the workpiece required as a product. For example, the shape of the protrusion 3 is the shape shown in FIG. 13B instead of the tip shape (used in the above embodiment) such that the protruding portion having the shape shown in FIG. It is good also as a front-end | tip shape that the protrusion part of this is obtained on the to-be-processed object W. Moreover, it is not limited to a pyramid shape, and may be a cone shape, and is not particularly limited as long as it has a sharp shape. The thickness of each disk D1, D2 is not limited to the above value.

Furthermore, a metal filter having a corrugated shape, a through hole, and a protruding portion can be manufactured even if only the concave portion 5 is provided on either one side or the other side of the opposed first disk. Further, the workpiece W can be processed even if the entire circumference of the first or second disk is not provided with the protrusions 3, the recesses 5, or the molding teeth 6 and is provided intermittently or only partially. . The side surface shape of each disk is not limited to a circular shape, and may be various polygonal shapes or other deformed shapes.
Regarding the arrangement order of the first and second disks arranged in parallel in the rotation axis direction of the respective processing drums LX and LY, the first disk D1 and the second disk D2 are alternately arranged in the above embodiment. However, the arrangement order is of course not limited to this, and various arrangements can be made according to the required specifications for the workpiece. The types of disks constituting each processing drum are not limited to two as in the above embodiment.

  Regarding the workpiece, the thickness of the metal plate as the workpiece is not limited to 40 μm, and a desired thickness can be processed. In manufacturing the metal filter used in the exhaust gas purifying apparatus described above, considering the durability of the projection 3 as a processing blade, the ease of processing, the strength of the product after processing, and the like, the thickness is about 10 μm to 80 μm. Material is preferred. The width of the metal plate is not limited to 50 mm, and a metal plate having a desired dimension can be processed. There is no particular limitation on the size of the hole drilled in the metal filter. For example, it is optimal in consideration of the balance between the differential pressure generated between the IN side and the OUT side of the exhaust gas purifying device and the PM reduction effect, etc. You can select the correct value. There are no particular restrictions on the specifications, conforming conditions, etc. of the exhaust gas purification device. Moreover, although the metal filter for exhaust gas purification apparatuses was mentioned as an application of a workpiece in the said Example, an application is not specifically limited to this.

  In addition, the material of each disk, gear, or workpiece is not limited to that described in the above embodiment, and various materials can be used. The processing apparatus of the present invention is shown in FIG. 1 or FIG. It goes without saying that the workpiece can be machined even if it is operated while being rolled over in addition to the state.

It is a front view of the processing apparatus of this invention. It is a right view of the processing apparatus of this invention. It is a figure which shows an example of the 1st disk. It is a figure which shows an example of the 2nd disk. It is a figure which shows an example of a gearwheel. It is a figure which shows an example of a mode that the 1st disk and the 2nd disk meshed | engaged. It is a figure which shows another example of the 1st disk. It is a figure which shows another example of the 2nd disk. It is a figure which shows another example of a gearwheel. It is a figure which shows another example of a mode that the 1st disk and the 2nd disk meshed | engaged. It is an external appearance perspective view of the metal filter obtained by the processing apparatus of this invention. It is a side view which shows the structure of the metal filter obtained by the processing apparatus of this invention. It is an enlarged view of a through-hole, and is a view showing a contour shape that should have a protruding portion formed by being bent around the through-hole at the same time.

Explanation of symbols

D1 1st disc D2 2nd disc LX One side processing drum LY The other side processing drum DG Driven gear F Filter GX One side gear GY The other side gear Ha Through hole Hb Through hole K Key part P Engagement part S Shaft T Transmission tooth W Work piece 1 Processing device 3 Protrusion 4 Protruding part 5 Recessed part 6 Molded tooth 10 Main body 11 Machine end plate 12 Back plate 13 Bottom plate 14 Bolt 15 Nut 16 Opening portion 17 Shaft insertion hole 18 Auxiliary hole 41 1st Projection 42 Second Projection 43 Third Projection 44 Fourth Projection

Claims (2)

An apparatus for processing a plate-like workpiece to be continuously supplied,
A pair of shafts pivotally supported on the body and facing each other at a predetermined interval;
Attached to each shaft with a common axis, and arranged in parallel on the shaft in a predetermined order,
At least one pair of first disks having protrusions formed sharply on the outer periphery and meshing with each other and facing each other;
Comprising at least one pair of second discs having corrugated teeth on the outer circumference and facing each other in mesh with each other,
A plate-like workpiece having a through-hole drilled in the workpiece while forming a corrugation by sandwiching the plate-like workpiece supplied to the meshing portion of each disk. Processing equipment. A method for producing a metal filter used in an exhaust gas purification device,
A pair of shafts pivotally supported on the body and facing each other at a predetermined interval;
Attached to each shaft with a common axis, and arranged in parallel on the shaft in a predetermined order,
At least one pair of first disks having protrusions formed sharply on the outer periphery and meshing with each other and facing each other;
A flat plate-like engagement portion of each disk of a means for processing a flat plate-like workpiece, which has corrugated teeth on the outer periphery and is opposed to at least one pair of second disks engaged with each other. A method of manufacturing a metal filter, wherein a through hole is formed in the workpiece while forming a corrugation by sandwiching the workpiece.

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