JP3807685B2 - Small hole punching method and apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punching device such as a press for drilling a small hole in a work material, and in particular, a fine drilling method and device for processing an IC chip, a printed board, an ink ejector head of a computer printer, etc. About.
[0002]
[Prior art]
In a conventional punching device in a general press, after the punch die A punches out the material from the die 10, the punch die is reversely turned and removed from the die (see FIG. 10).
However, when the workpiece is thin, or when the hole diameter is small, when the punch die A is pulled out, the periphery of the hole in the workpiece W is turned up due to friction between the punch die A and the workpiece W for a while. Accurate drilling was difficult.
Further, in the conventional press method, in the case of an extremely thin workpiece W, the thickness is up to 80% of the thickness, and drilling less than that is difficult. However, in recent years, the demand for drilling fine holes in electronic device parts or the like has been increasing.
[0003]
In addition, a perforation method and apparatus using ultra-high pressure water is known from Japanese Patent Laid-Open No. 7-132399. These ultra-high pressure water systems have also been perforated by the applicant company. However, precise drilling cannot be performed with fine drilling, and accurate drilling can be performed with flexible or flexible objects. It is difficult and the work efficiency cannot be improved much.
[0004]
[Problems to be solved by the invention]
Therefore, the present invention does not have the above-mentioned turning, and also eliminates the punch returning process and greatly improves the working efficiency. Another object of the present invention is to supply a method and an apparatus for fine drilling, which has been impossible or extremely difficult in the past, to the market.
Another object is to enable accurate processing even for a flexible workpiece.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention uses a die and a guide holding member each having a die hole and a guide hole having the same cross-sectional shape penetrating therethrough, and matching the positions of these holes, A first step of clamping the workpiece by the guide pressing member.
A short-cut punch piece having a cross-sectional shape that just slides into the die hole and the guide hole is supplied from the side of the guide pressing member, and the punch piece is pushed into the work material at a high speed or is pushed at a high speed, and the work material is punched out. And a second step of passing the punched chip and punch piece through the hole of the die in one direction.
Thereafter, a third step of feeding the workpiece from the die and the guide pressing member. The small hole punching method is characterized by comprising the above three steps.
[0006]
Further, in order to achieve the above-mentioned problems, a large number of punch pieces of the small hole punching method are prepared, and whenever the position where the workpiece is to be drilled is supplied to the position of the hole of the die and the guide pressing member, The punch pieces may be supplied one by one to one guide hole.
[0007]
In order to achieve the above object, it is preferable that the high-speed collision speed or hitting speed of the punch piece in the small hole punching method is 10 cm / sec to 20 m / sec.
[0008]
Further, in order to achieve the above-mentioned problem, the die hole and guide hole of the small hole punching method are perforated by plural numbers corresponding to a set of dies and guide pressing members, and any of these can be simultaneously performed. In some cases, one punch piece is supplied to each.
[0009]
Further, in order to achieve the above-mentioned problem, the chip and the punch piece after the punching step of the small hole punching method are separated, and only the punch piece is again circulated and supplied to the hole portion of the guide pressing member. is there.
[0010]
Moreover, in order to achieve the said subject, as said punch piece of a small hole punching method, 1 type in the wire which has the intensity | strength and hardness comparable as these as a cemented carbide wire, a tungsten wire, a piano wire, etc. is used. It is preferable to be characterized by this.
In addition, in order to achieve the above-mentioned problems, as a workpiece of the small hole punching method, a printed circuit board of IC chip, a synthetic resin film such as a photographic film, a laminated film of a metal and a synthetic resin, a metal thin plate, a foil, a paper It may be characterized by supplying one of them.
[0011]
In order to achieve the above object, the present invention includes a die and a guide pressing member, a driving means for contacting and separating the die, a number of punch pieces, a fluid pressure hammer for hitting the punch pieces, and a pure mechanical hammer. A kind of hammer, a punch piece supply device for supplying the punch pieces to the hammer or guide hole, and a work material supply / unload device for supplying and unloading the work material between the die and the guide pressing member;
The die has a die hole penetrating therethrough, the guide pressing member is provided so as to be able to contact and separate from the die, and the guide pressing member has a guide hole penetrating on the same axis as the die hole. At least one punch is formed, and the punch piece has a cross-sectional shape corresponding to the die hole and the guide hole, respectively, and a short bar shape. At least one hammer is provided on the guide pressing member side. It is provided, and at least one punch piece is beaten at a time toward the guide hole, and a collecting device for collecting the punched chip and the punch piece is provided below the die. Small hole punching device.
[0012]
In order to achieve the above object, the die and guide pressing member of this small hole punching device are provided with a plurality of die holes and punch holes, and these molds are relatively positioned relative to a hammer for hitting punch pieces. It may be characterized by being movably equipped at the other hole positions.
[0013]
In order to achieve the above object, the contact surface between the die and the guide pressing member of the small hole punching device is one of a flat surface, a secondary curved surface, and a tertiary curved surface, and is provided on the die and the guide pressing member. Each hole is perforated at right angles to both mold mating surfaces of the part, and the axis of each hammer is parallel to the axis of the guide hole.
[0014]
In order to achieve the above object, it is preferable that a small separation device for separating the chip and the punch piece is provided on the downstream side of the collection device of the small hole punching device.
[0015]
In order to achieve the above object, in the invention of claims 7 to 10 of this small hole punching device, the hammer is preferably an air hammer.
[0016]
Further, in order to achieve the above object, in the invention of claims 7 to 10 of this small hole punching device, it is an air gun for firing the punch piece instead of the air hammer, and the air gun has a barrel portion thereof. In some cases, a punch piece supply device is equipped.
[0017]
Effect of the invention
The operation of the invention according to claims 8 to 12 will be described. It is shown in FIGS.
First, the workpiece holding surface is separated as much as possible so that the workpiece can be carried in on the mating surface of the guide holding member mounted on the punch die, and the workpiece supply / unload device supplies between them, and the workpiece is processed by the guide holding member. The material is pressed against the die, and the workpiece is sandwiched between the die and the guide pressing member.
[0018]
Next, at least one punch piece supplied to the guide hole of the guide holding member is struck with a hammer at a time, and the punch piece hit is passed through the hole of the guide holding member, and is held between the die and the guide holding member. The workpiece is hit or hit at a high speed, and is punched into the cross-sectional shape of the die and punch piece.
[0019]
The punched chip and the punch piece pass through the die hole and fall into these collecting devices.
At this time, since the periphery of the hole of the workpiece is also sandwiched between the die and the guide pressing member, the periphery of the hole is not turned or distorted in any direction. This tendency becomes more conspicuous as the punch piece speed increases.
Once the target hole has been drilled in the work material, the guide holding member is separated from the work material and the die, and the work material is unloaded by the work material supply / unloading device, as in known press machines. A workpiece is supplied by a workpiece supply / unload device. When the workpiece is a continuous strip, the workpiece is sequentially moved according to the machining pitch.
[0020]
By the operation of the above apparatus, the punch piece is hit or pushed with a hammer, and the method according to claim 1 or claim 2 is performed.
When the punch piece is hit with a hammer and the speed at which the punch piece hits the workpiece with a high-speed hit or hit is set to 10 cm / sec to 20 m / sec, the method according to the third aspect of the invention is set.
[0021]
In the invention described in claim 9, when a plurality of holes are perforated in a set of dies and guide pressing members, the number of hammers to be struck at one time is a fraction of the number of die holes and guide holes. Yes, the hammer moves sequentially relative to the hole of the guide pressing member with respect to the pair of dies and the guide pressing member, and hits the punch pieces sequentially.
If the punch piece is struck with a hammer in all the guide holes to be processed, the next material is supplied in the same manner as described above.
When the hammer hitting area is large and a plurality of punch pieces can be hit simultaneously with a single hammer, or when a plurality of hammers are provided, the punch pieces are hit in parallel at the same time. In this case, the method invention described in claim 4 is provided.
[0022]
In the invention according to claim 10, the mating surface of the guide pressing member and the die is not limited to a flat surface, and may be a quadratic curved surface or a cubic curved surface. And each hole provided in the guide pressing member is perforated at right angles to the die mating surfaces of the part, and the moving direction of each hammer is parallel to the axis of the hole through which the punch piece hit by the hammer passes. Therefore, the punch piece that has been struck constantly collides with the workpiece at a right angle, and is punched into an accurate shape by the hole of the die and the punch piece.
[0023]
In the invention described in claim 11, since a separate separation device for separating the chip and the punch piece is provided on the downstream side of the recovery device, the punched chip and the punch piece are separated and separated. The punched piece can be circulated again to the hammer punch piece supply section. By operating the apparatus, the method invention according to claim 5 is carried out.
[0024]
In the invention described in claim 12, since the hammer is a kind of air hammer as a fluid pressure hammer, its axial direction is determined as a target direction, and the movement of the air hammer is facilitated, and the degree of freedom in design is high. In addition, the hitting speed can be easily increased, the speed can be easily selected, and the processing accuracy can be improved.
[0025]
In the invention of claim 13, since an air gun is used instead of the air hammer and the barrel portion is equipped with a punch piece supply device, the punch pieces emitted from the air gun are used to make the above-described claims 6 to 6. At least one of the nine methods is carried out, and at least one of the first to fifth methods is implemented.
[0026]
DETAILED DESCRIPTION OF THE INVENTION
The workpiece W to be supplied is generally a thin metal plate, IC chip, printed board or the like, but may be a synthetic resin plate, a synthetic resin film, wood, plywood, foil or paper. The thickness of the workpiece N is generally suitable for a thickness of 1 mm or less and 0.020 mm, but this thickness dimension has no limiting meaning.
[0027]
Embodiment 1
FIG. 1 and FIG. 2 show an embodiment including the inventions of claims 7 and 12.
In the figure, reference numeral 10 denotes a die. A die hole 11 having a circular cross section passes through the die vertically and is perforated, and a lower portion of the die hole 11 is a large-diameter relief portion 12 having a large diameter.
[0028]
Reference numeral 15 denotes a guide pressing member, which is mounted on a machine frame (not shown) so as to be capable of coming into contact with and separating from the die 10. The guide pressing member 15 is completely coaxial with a position corresponding to the die hole 11. A guide hole 16 having a circular cross section is formed so as to penetrate on the line. The upper portion of the guide hole 16 has a tapered shape 17 having a larger diameter at the upper end. The guide pressing member 15 is mounted so as to be movable up and down with respect to the die 10 by a normal hydraulic device (not shown).
The cross-sectional shapes of the die hole 11 and the guide hole 16 described above have been described by taking a circular shape as an example, but there are no limitations on the shape such as an oval shape, a rectangle shape, a triangle shape, a trapezoid shape, and a cloud shape.
[0029]
Reference numeral 20 denotes a workpiece supply / unload device provided in the vicinity of the die 10 in the same manner as a normal press, and the illustrated one is a pair of upper and lower clamping rollers, but this type is not limited.
Reference numeral 25 denotes an air hammer which is a kind of the fluid pressure hammer. The striking piece 26 in FIG. 2 is an area where one punch piece 30 can be struck, and two or more pieces are shown in FIG. The punch piece 30 can be tapped. For example, there is a case in which the striking piece 26 is large enough to strike a line of the guide holes 16 shown in FIG.
In some cases, the striking surface of the striking piece 26 is provided with a deep or concave recess 27 (see FIG. 3) so that the rear end of the punching piece 30 can be just fitted.
[0030]
As the punch piece 30, a cemented steel wire, a tungsten wire, a piano wire, or the like is used, and the diameter thereof is not particularly limited, but one having a diameter of 1 mm to 0.02 mm is used.
The length is 10 to 15 mm. The cross-sectional shape corresponds to the die hole 11 of the die 10 and is a shape that slides on the die hole 11 and is not particularly limited, such as a circle, an ellipse, or a rectangle, but what is used in this embodiment is a perfect circle. The upper and lower end surfaces of the punch piece 30 are finished to a plane that is exactly perpendicular to the axis. Further, the material of the punch piece 30 is not limited to the above exemplified materials, and other materials may be used as long as they have the same strength and hardness.
The clearance between the die hole 11 of the die 10 and the punch piece 30 is preferably 3 to 5% of the diameter of the punch piece 30.
[0031]
Reference numeral 35 denotes a recovery device that receives the punch piece 30 and the punched chip T provided on the lower side of the die 10. Reference numeral 36 denotes a separate separating device for separating the punch piece 30 and the punched chip (see FIG. 5).
As a type of the individual separation device 36, a sieve type is shown in FIG. 5, but any type such as a cyclone collector type using a weight difference, a wind pressure classification type, a magnetic force classification type, etc. may be used.
[0032]
The separated punch piece 30 is conveyed to a punch piece supply device 37 for supplying the punch piece 30 to the guide hole 16 by an appropriate conveying means, and the punch piece 30 is circulated.
[0033]
A sorting device 38 for sorting normal punch pieces 30 and worn punch pieces 30 is provided between the individual separator 36 and the punch piece supply device 37, and only the normal punch pieces 30 are provided in the punch piece supply device. 37 may be supplied. The sorting device 38 discharges the defective punch piece 30 out of the circulation system.
[0034]
For convenience of explanation, the die 10 and the guide pressing member 15 have been described above and below except for FIG. 7, but the mating surfaces of the die 10 and the guide pressing member 15 are in the vertical direction or on both sides of FIG. Even if it is inclined as in the case, it is included in the embodiment of the present invention.
[0035]
Operation of Embodiment 1
First, the die 10 is fixed to the machine frame of the apparatus, and a guide pressing member 15 corresponding to the die 10 is installed on the workpiece support surface so that the die hole 11 and the guide hole 16 are in a straight line. Each time 15 separates from the die 10, the plate-like workpiece W is supplied between the die 10 and the guide pressing member 15 by the workpiece supply / unload device 20, and the guide pressing member 15 is lowered to move the die 10. The workpiece W is clamped by the guide pressing member 15.
[0036]
The punch piece 30 is supplied to the guide hole 16 from the punch piece supply device 37. Next, after the air hammer 25 is brought close to the guide pressing member 15 and the recess 27 of the striking piece 26 is fitted to the rear end of the punch piece 30, the striking piece 26 is advanced at high speed by air pressure. In this case, buckling of the punch piece 30 does not occur. Alternatively, when there is no depression 27 on the striking surface of the striking piece 26, the striking piece 26 is moved forward at high speed by air pressure, and the punch piece 30 is thereby struck.
The punch piece 30 that has been struck advances through the guide hole 16 at a high speed, punches the workpiece W, and the punched chip T and the punch piece 30 come out of the striking piece 26, pass through the die hole 11, and die 10. , And falls into the collection device 35.
[0037]
The punch pieces 30 and the chips T that have fallen on the collecting device 35 are separated into only the punch pieces 30 by the separating device 36, supplied to the punch piece supply device 37 by the conveying means, and the punch pieces 30 circulate sequentially.
The worn punch pieces 30 are removed from the circulation system by the sorting device. Among the removed punch pieces 30, those that can be used by re-polishing are reused.
[0038]
In the above operation, when there are a large number of die holes 11 and guide holes 16 in one set of the die 10 and the guide pressing member 15, the above operations are simultaneously performed on these holes, and all the guide hole 15 portions are processed. A desired hole is drilled in the material W. When the drilling operation is completed, the guide pressing member 15 is raised, the workpiece W is carried out, the next workpiece W is supplied in the same manner as the previous time, and the same drilling operation as in the previous time is performed.
[0039]
Embodiment 2
An embodiment including the invention according to claim 8 is shown in FIG.
The difference from the first embodiment is that a large number of die holes 11 and guide holes 16 are perforated in a set of dies 10 and guide pressing members 15, and the size of the hit piece of the air hammer 25 is many. This is an area where a part of the punch piece 30 supplied to the guide hole 16 is hit.
[0040]
Accordingly, after one hit of the air hammer 25, it moves to the other guide hole 16 position of the guide pressing member 15 and performs a new hit. When the punching work 30 is struck with the air hammer 25 and the punching operation is completed by struck the punch pieces 30 supplied to all the guide holes 16, the guide pressing member 15 is separated from the die 10, and the workpiece W is unloaded, We also supply new materials.
[0041]
Embodiment 3
This embodiment is shown in FIG. 7 and is an embodiment of the invention according to claim 9, and is mainly for drilling in a workpiece Wa having a two-dimensional curved surface or a three-dimensional curved surface. The mating surface 18 of the die 10a with the guide pressing member 15 is a two-dimensional curved surface or a three-dimensional curved surface, and the die hole 11 is divided into a plurality of guide pressing members 15a of each die 10, and the die hole 11 is perforated perpendicularly to the mating surface at that position.
[0042]
On the other hand, the guide pressing member 15a is divided into a plurality of pieces, and the guide pressing members 15a each having a number smaller than the number of the die holes 11 of the dice 10 are formed in each divided guide pressing member 15a. Each guide pressing member 15a contacts and separates from the die 10 simultaneously or individually.
This embodiment is suitable for punching a workpiece W1 having a two-dimensional or three-dimensional surface that has already been pressed.
[0043]
Embodiment 4
In the first to third embodiments, the punch piece 30 is not used at all, and the punch piece 30 is used only once (not shown). The device itself is very simple. Although the cost due to the exhaustion of the punch piece 30 is increased, a device such as a sorting device and a transporting device for circulating and using the punch piece 30 is not required, and an ordinary cost such as maintenance and management costs is not required. The adoption of the disposable method does not necessarily increase the cost of drilling.
In the first to fourth embodiments, the air hammer is exemplified as the hammer 25. However, a mechanical cam type or eccentric ring type may be used, which may be a hydraulic or hydraulic type hammer using other fluid pressure. Even a pure mechanical hammer that moves the striking piece up and down by a crank type or the like, or a hammer by electromagnetic force such as a solenoid is also included in the embodiment of the hammer of the present invention.
A fluid pressure type hammer, particularly an air hammer, is suitable for high-speed impacts of 4 m / sec to 20 m / sec, and a pure mechanical hammer is suitable for semi-high speed impacts of 10 cm / sec to 6 m / sec.
[0044]
The speed of the aforementioned hammer is selected from 10 cm / sec to 4 m / sec when the workpiece W is a hard and brittle material. When the workpiece W is flexible, different materials are laminated. In some cases, impact punching is performed at a high speed of 4 m / sec to 20 m / sec. In this way, the material is not turned over, and there is no leftover chip residue. Further, even in the case of a flexible laminated board such as an IC chip, an accurate perforation can be performed without peeling from the laminated portion.
Further, the die hole 11 of the die 10, the punch piece 30, and an accurate shape can be drilled without making the clearance so small.
[0045]
Embodiments 5 to 8
The air hammers according to the first to fourth embodiments are used as air guns, which will be described collectively as the fifth, sixth, seventh, and eighth embodiments, respectively.
That is, the difference from the other embodiments is not an air hammer but an air gun that can fire the punch piece 30. Therefore, the punch piece supply device is attached to the air gun. In this case, the axis of the barrel of the air gun and the axis of the guide hole 16 are accurately positioned on a straight line. Other configurations are the same as those of the first to third embodiments, and are the embodiments of the invention according to claim 13.
[0046]
Effects of Embodiments 5 to 8
In these forms, the rear end of the punch piece 30 is directly pressed by a high pressure of air and is pressed in the barrel, so that the rear end of the punch piece 30 is crushed or punched. There is no possibility that the piece 30 buckles from the middle. Other operations are the same as those in the first to third embodiments. Since an air gun can generally be connected to a high-pressure air source with a hose, the degree of freedom in designing the position and firing direction of the air gun is high.
[0047]
The guide hole 16 of the guide pressing member 15 used in each of the first to eighth embodiments includes a V block 15b in which the guide pressing member 15 is two members and a pressing block 15c that closes the opening of the V groove 18 of the V block 15b. In this specification, the guide hole (see FIG. 9) includes a gap having a triangular cross section between the V groove 18 and the holding block 15b as the guide hole.
In this case, the two members can be fixed and separated by a fine adjustment device (not shown), and can be changed and adjusted according to the thickness of the punch piece 30.
[0048]
【The invention's effect】
In the method invention according to claim 1, since it is configured as described above, the workpiece is first sandwiched between the die mold and the guide holding member, and then the punch piece is inserted from the guide hole at a high speed. Since the workpiece is punched into the workpiece, the punched cutting edge is free from burrs or burrs, and the processing accuracy is high.
Since the punch piece passes in one direction, there is no need to pull it out, this step is unnecessary, and there is no possibility that the workpiece will be turned up by pulling out and the punch piece will be lost due to friction with the workpiece.
Moreover, since the punch piece falls to the lower side of the die, it can be easily recovered by a recovery device.
[0049]
In the method invention according to claim 2, in addition to the effect of the invention according to claim 1, a large number of punch pieces are prepared and used sequentially, and the same one is not continuously used. An annealing effect due to frictional heat does not occur, and the durability of one punch piece is improved even when the punch piece is circulated.
[0050]
In the method invention according to claim 3, in addition to the effect of the invention according to claim 1 or claim 2, the high-speed collision speed of the punch piece is set to 10 cm / sec to 20 m / sec. The punching edge can be accurately punched into the die hole and punch piece cross section.
[0051]
In the method invention according to claim 4, in addition to the effects of the invention according to claim 1, claim 2, or claim 3, the method is the above-mentioned method, so that it is supplied to the guide hole of the guide pressing member at a time. With several punch pieces, the workpiece can be punched at the same time, and efficient drilling can be performed.
[0052]
In the method invention according to claim 5, in addition to the effects of the invention according to claim 1, claim 2, claim 3 or claim 4, the punch piece is used repeatedly because of the above-mentioned method. Since it circulates sequentially, the punch pieces are sufficiently cooled during this time, there is no annealing effect due to frictional heat, and the service life of these becomes longer. In addition, it becomes possible to sort out worn out defective products in the middle of the circulation circuit.
[0053]
In the method invention according to claim 6, since the above-mentioned material is used as the material of the punch piece, it has sufficient strength and hardness with respect to the material to be processed normally and can be used repeatedly. The worn part can be reused by polishing.
In the method invention according to claim 7, even if the work material is extremely thin and flexible as described above, it is possible to accurately and efficiently drill a small hole having a desired shape. Play.
[0054]
In the device invention according to claim 8, since it has the above-mentioned configuration and functions, it is claimed as claimed in claim 1, claim 2, claim 3, claim 4, claim 5, claim 6 or claim 3. The method invention according to Item 7 can be carried out, and fine holes can be precisely drilled in the workpiece similarly to the method invention. Further, since each punch piece does not have a return process, it is not necessary to take a return time and an efficient operation can be performed.
[0055]
In the apparatus invention according to claim 9, since it has the above-described configuration and functions, in addition to the effect of claim 8, the die and the guide pressing member are provided with a plurality of die holes and punch holes. Since these dies are equipped so as to be movable relative to the other guide hole positions relative to the hammer for hitting the punch piece, it is not necessary to enlarge the hammer or provide a large number of hammers. Miniaturization and easy position adjustment.
[0056]
In the device invention according to claim 10, since it has the above-described configuration and functions, in addition to the effect of claim 8 or claim 9, the contact surface of the die and the guide pressing member is flat. Each of the holes formed in the die and the guide holding member is drilled at right angles to the die mating surfaces of the parts, and the axis of each hammer is a guide hole. Since the workpiece is not limited to a flat surface, accurate drilling can be performed even for a curved surface.
[0057]
In the apparatus invention according to claim 11, since it has the above-described configuration and functions, in addition to the effects of claims 8, 9, or 10, on the downstream side of the recovery device, Since the chip and the punch piece are separated from each other, the punch piece supply device has a punch piece even if the punch piece and the punched tip T are put together into the collecting device. Only the chip can be circulated and the chip itself can be collected separately.
[0058]
In the device invention according to claim 12, since the air hammer is used as a kind of the hammer as described above, the device itself is particularly lightweight, the axial direction can be freely selected, and the movement of the air hammer is also possible. It is easy, the device is simplified, and the degree of freedom of design is high. Moreover, since it is an air hammer, the pressing force and speed by the striking piece can be selected freely according to the purpose, and the operation interval can be easily controlled.
[0059]
In the apparatus invention of claim 13, since it has the above-described configuration and functions, it has almost the same effect as that of the invention of claim 12, and is particularly an air gun. Since the air pressure acts directly on the rear end of the punch piece and it is not beaten with a solid, this portion is hardly worn and there is no buckling of the punch piece. In addition, since the air gun is lightweight and can be connected to a high-pressure air source with a hose or the like, the air gun can be easily moved, and its inclination posture and firing direction can be freely selected.
[Brief description of the drawings]
FIG. 1 is a block diagram schematically showing a mechanism according to a first embodiment of the present invention.
FIG. 2 is an enlarged longitudinal sectional view at the time of drilling in a state where a punch piece is set in a guide hole.
FIG. 3 is a longitudinal cross-sectional enlarged view of another embodiment at the time of drilling in a state where the punch piece is set in the guide hole.
FIG. 4 is a perspective view showing an example of a guide pressing member and a die.
FIG. 5 is a perspective view showing an example of a solid separation device.
FIG. 6 is a side view showing a moving state of an air hammer or an air gun.
FIG. 7 is a cross-sectional view showing a processing state when a workpiece is a curved surface.
FIG. 8 is a side view of an embodiment in which a guide pressing member and an air hammer or an air gun move relative to a die.
FIG. 9 is a perspective view showing another embodiment of the guide pressing member.
FIG. 10 is a longitudinal side view of a conventional press.
[Explanation of symbols]
10 dice
11 Die hole
15 Guide holding member
16 Guide hole
25 Hammer
30 punch pieces

Claims (13)

A die and a guide holding member, each having a die hole and a guide hole having the same cross-sectional shape, are provided, and the positions of these holes are matched, and the workpiece is sandwiched between the die and the guide holding member. One step.
A short-cut punch piece having a cross-sectional shape that just slides into the die hole and the guide hole is supplied from the side of the guide pressing member, and the punch piece is pushed into the work material at a high speed or is pushed at a high speed, and the work material is punched out. And a second step of passing the punched chip and punch piece through the hole of the die in one direction.
Thereafter, a third step of feeding the workpiece from the die and the guide pressing member.
A small hole punching method comprising the above three steps. A large number of the punch pieces are prepared, and each time the position where the workpiece is to be drilled is supplied to the positions of the holes of the die and the guide pressing member, the punch pieces are supplied one by one to one guide hole. The small hole punching method according to claim 1, wherein: The small hole punching method according to claim 1 or 2, wherein a high-speed collision speed of the punch piece is 10 cm / sec to 20 m / sec. The die hole and the guide hole are perforated by a plurality of pieces corresponding to a set of dies and guide holding members, and one punch piece is supplied to each of them at the same time. 4. A small hole punching method according to claim 1, 2 or 3. The chip and the punch piece after the punching step are separated, and only the punch piece is again circulated and supplied to the guide hole portion of the guide pressing member. Small hole punching method as described. As the punch piece, one kind of a cemented carbide wire, a tungsten wire, a piano wire, and other wires having the same strength and hardness as these are used. 3. A small hole punching method according to claim 3, 4 or 5. 2. A material to be processed is supplied as one of a printed circuit board of an IC chip, a synthetic resin film such as a photographic film, a laminated film of a metal and a synthetic resin, a metal thin plate, a foil, and paper. The small hole punching method according to claim 2, claim 3, claim 4, claim 5 or claim 6. Dies and guide pressing members, drive means for contacting and separating them, a large number of punch pieces, a fluid pressure hammer for striking the punch pieces, a kind of pure mechanical hammer, and the multiple punch pieces to the hammer or guide A punch piece supply device that supplies the hole, and a work material supply / unload device that supplies and unloads the work material between the die and the guide pressing member,
The die has at least one die hole penetrating therethrough, and a guide pressing member is provided so as to be able to contact and separate from the die, and the guide pressing member has a guide penetrating on the same axis as the die hole. At least one hole is perforated, the punch piece has a cross-sectional shape corresponding to the die hole and the guide hole, and a short bar shape, and the hammer is provided on the guide holding member side. At least one is provided, and at least one punch piece is beaten at a time toward the guide hole, and a collecting device for collecting the punched chip and the punch piece is provided below the die. A small hole punching device. The die and the guide holding member are provided with a plurality of die holes and punch holes, and these dies are equipped so as to be movable to other hole positions relative to the hammer for hitting the punch piece. The small hole punching device according to claim 8, wherein the device is a punching device. The contact surface of the die and the guide pressing member is one of a flat surface, a quadratic curved surface, and a cubic curved surface, and each hole provided in the die and the guide pressing member is perpendicular to both mold mating surfaces of the portion. 10. The small hole punching device according to claim 8, wherein the axis of each hammer is parallel to the axis of the guide hole. The small hole punching device according to claim 8, 9 or 10, wherein a separate separating device for separating the chip and the punch piece is provided on the downstream side of the collecting device. The small hole punching device according to claim 8, 9, 10, or 11, wherein the hammer is an air hammer which is a kind of fluid pressure hammer. 13. The punching of a small hole according to claim 12, wherein the air gun is an air gun for firing the punch piece instead of the air hammer, and the air gun is equipped with a punch piece supply device in a barrel portion thereof. apparatus.

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