JP3202530U - Straight hole punch and straight hole drilling device - Google Patents

Abstract

A rectangular hole can be easily drilled at an arbitrary position in a thin plate, and a plurality of holes are formed using the hole to form a straight hole, or even an L-shaped or reverse shape. To provide a straight hole punch capable of forming a straight hole that is bent at a right angle, such as an L-shape, and a straight hole punching device including the straight hole punch. The blade of the punch 14 for straight hole drilling is formed by a main body portion 14a made of a rectangular parallelepiped on the front end side, and a projecting portion 14b made of a rectangular parallelepiped on the front end side partially protruding from the front end side of the main body portion 14a. The length of one side of the square on the tip side of the protrusion 14b is the same as the length of the short side of the rectangle on the tip side of the main body. Once the rectangular hole 18b is formed on the thin plate using the straight hole punch 14 and then the drilling operation is repeated, a straight hole or even an L shape or an inverted L shape is formed at a right angle. Bent straight holes can be made. [Selection] Figure 5

Description

  The present invention is provided with a straight hole punch and a straight hole punch used when making a straight hole in a thin plate such as an aluminum plate, a copper plate, an iron plate, a plastic plate and the like and a case formed by these thin plates. The present invention relates to a linear drilling device.

  Electric drills and hand drills are often used for drilling thin plates such as aluminum plates, copper plates, iron plates, plastic plates, and cases formed by these thin plates. On the other hand, linear drilling can be easily performed by using a milling machine, but since the milling machine itself is expensive, it is difficult to employ it for general household use or hobby work. Therefore, it is usually possible to use electric drills or hand drills to form a plurality of round holes at intervals, then cut between each round hole with a nipper or cutter, and then post-process with a file to make a straight hole. Has been done.

  In order to perform linear drilling after forming such a plurality of round holes at intervals, it is necessary to form the plurality of round holes so as to be positioned on a straight line. A tabletop drilling machine is known as an inexpensive means capable of forming a plurality of round holes at intervals, but a cheaper manual tool is preferred for general household use or hobby work.

  A manual drilling device 70 that can also be referred to as a manual, pseudo drilling machine is disclosed in Patent Document 1 (Japanese Patent Laid-Open No. 2000-006097). As shown in FIG. 8, the manual drilling device 70 fixes the support column 72 to the base 71, and fixes the support plate support arm 74 to which the support plate 73 is fixed to the support column 72 and the shaft support arm 76 to which the shaft 75 is fixed. Then, a drill blade 77 is fixed to the lower end of the shaft 74, and a shaft turning arm 79 having a handle 78 fixed to the upper end is fixed.

  Further, as means for drilling a predetermined shape in a thicker metal plate, a punch and a die (not shown) for drilling from above as disclosed in the following Patent Document 2 (Act No. 06-044491) are provided. What you have is known. As shown in FIG. 9, the punch 80 is formed such that a projection 82 that makes an acute angle with respect to the work before the lower inclined surface 81 protrudes downward from the lower inclined surface 81. The protrusion 82 has a triangular cross section having a cutting edge surface 83 substantially parallel to the axis of the punch 80. Furthermore, the following Patent Document 3 (Japanese Patent Laid-Open No. 9-234622) discloses a hand nibble having an electric rotating mechanism.

  On the other hand, for soft metal plates such as aluminum plates and copper plates with a thickness of up to about 2 mm, iron plates with a thickness of about 0.5 mm, and plastic plates with a thickness of about several mm, an electric drill or hand After forming a pilot hole using a drill, it is also customary to perform a straight hole by inserting a non-electric hand nibler into the pilot hole and cutting it straight.

JP 2000-006097 A Japanese Utility Model Publication No. 06-044491 JP 09-234622 A

  According to the manual drilling device 70 disclosed in the above-mentioned Patent Document 1, it is inexpensive, and since a thin plate or case can be placed in a stable state on the tray 73, a plurality of round holes can be accurately and straightened. It can be formed so as to be located on a line. Further, when the punch 80 disclosed in Patent Document 2 is used, a strong pressing force can be applied to the punch, so that even a thicker metal plate can be punched.

  However, in the method of forming a plurality of round holes at intervals, as in the case of using the manual drilling device 70 or the punch 80 disclosed in Patent Documents 1 and 2, the linear drilling is performed in a straight line. This is an effective method when the width of the hole is wide, but a straight hole with a narrow width, especially a straight hole bent at a right angle of L-shape or reverse L-shape, can be easily satisfied with accuracy. It was difficult to form things.

  Furthermore, according to the hand nibbler having the electric rotation mechanism disclosed in Patent Document 3, not only a curved hole but also a straight hole can be formed, but the apparatus is expensive because it is electric, In addition, due to the mechanism, it was only possible to process from the end of the thin plate, and it was difficult to make a square or rectangular hole only in the center.

  On the other hand, the above-described linear drilling using the non-electric hand nibbler can easily form a straight hole that is bent at a right angle, such as an L-shape or a reverse L-shape, in which the width of the hole is narrow. However, it is difficult to apply to thicker soft metal plates and iron plates. In addition, when drilling a straight line from the middle of a thin plate using a hand nibler, it is necessary to pass the hand nibler through the pilot hole, so the diameter of the pilot hole needs to be larger than the width of the linear hole to be drilled. The shape of the straight hole becomes distorted.

  The present invention has been made in view of the problems of the prior art as described above, and its purpose is for thin plates such as aluminum plates, copper plates, iron plates, plastic plates, and cases formed by these thin plates. A rectangular hole can be easily drilled at an arbitrary position, and by forming a plurality of holes using the hole, a straight hole, or an L shape or an inverted L shape, etc. It is an object of the present invention to provide a straight hole punch capable of forming a straight hole bent at a right angle and a straight hole punching device including the straight hole punch.

  In order to achieve the above object, the straight hole punch according to the first aspect of the present invention is a straight hole punch for making a hole in a thin plate by moving up and down. A main body portion made of a rectangular parallelepiped, and a tip side partially projecting from the tip end side of the main body portion is formed of a projecting portion made of a square cuboid, and the length of one side of the square on the tip side of the projecting portion Is the same as the length of the short side of the rectangle on the front end side of the main body.

  Moreover, the punch for linear drilling of the 2nd aspect of this invention is a punch for linear drilling of the 1st aspect, The height of the said protrusion part is 2 mm or more, It is characterized by the above-mentioned.

  Moreover, the straight hole punch of the third aspect of the present invention is the straight hole punch of the first or second aspect, wherein the three sides on the outer peripheral side of the projecting portion are the three sides on the outer peripheral side of the main body portion, respectively. It is characterized by being the same plane.

  Furthermore, the linear drilling device according to the fourth aspect of the present invention is a linear drilling device including any one of the first to third linear punches, and places and drives a thin plate for linear drilling. It has a base on which a shaft holding portion is erected, and a driving shaft provided in the driving shaft holding portion so as to be movable in the vertical direction, and a punch for linear drilling is attached to the lower end of the driving shaft. The body of the straight hole punch and the penetrating portion can be penetrated at a position facing the straight hole punch of the base, and substantially the same size as the cross section of the body portion of the straight hole punch. A rectangular through hole is formed.

  The linear drilling device according to the fifth aspect of the present invention is the linear drilling device according to the fourth aspect, wherein the distal end is rotatably fixed to the upper end portion of the driving shaft holding portion, and the shaft pressing portion is the driving shaft. A hand lever arranged so as to abut on the upper end side of the lever is provided, and the driving shaft can be moved up and down by the lever principle by a turning operation of the hand lever.

  According to the device for punching a straight hole of the first aspect, a rectangular hole can be easily drilled at an arbitrary position in a thin plate by the first punching operation, and then the position of the thin plate corresponds to one side of the square of the protruding portion. It is possible to easily make a straight hole by performing the next punching operation while shifting by the length to be performed. By repeating this operation, a straight hole bent not only in a straight line but also in an L-shape or an inverted L-shape can be formed. Will be able to drill holes with complex shapes at right angles.

  According to the invention of the punch for straight hole drilling of the second aspect, most of the metal plates such as an aluminum plate, a copper plate, and an iron plate used for general work have a thickness of 2 mm or less. It becomes possible to make a straight hole effectively for a commonly used metal plate.

  Further, according to the device for punching a straight hole in the third aspect, since there is no step between the main body portion and the outer peripheral side of the protruding portion, a straight hole can be formed with high accuracy.

  Furthermore, according to the device of the fourth aspect of the linear drilling device, the vertical punch can be smoothly moved up and down, so that rectangular drilling or linear drilling can be performed with high accuracy. In addition, in the idea of the linear drilling device of this aspect, in addition to being able to manually operate the vertical movement of the punch for linear drilling, it can be operated electrically, but to make an inexpensive linear drilling device. Is preferably operated manually.

  Further, according to the device of the fifth aspect of the straight hole drilling device, it becomes possible to easily make a rectangular hole or a straight hole with high accuracy by hand.

It is a fragmentary sectional side view of the linear drilling apparatus before operation provided with the punch for linear drilling of embodiment. FIG. 2 is a partial cross-sectional side view of the straight hole punching device of FIG. 1 in a state where a straight hole punch is moved downward. It is a 6th page figure of the punch for straight hole drilling of an embodiment. It is a drawing substitute photograph which shows the punch for straight hole drilling of embodiment. It is a figure explaining the operation which drills in the arbitrary places of a thin board with the punch for linear drilling of embodiment, (a) is a figure of positioning before drilling, (b) descended to the protrusion part and drilled (C) is the figure which looked at the thin plate of the (b) state from the lower part, (d) is the figure which further descended to the main-body part, and (e) is the state of (d). It is the figure which looked at the thin plate from below. It is a figure explaining the operation which moves a thin plate after drilling in the process shown in FIG. 5, and performs further drilling, (a) is the figure at the time of positioning a thin plate with a part of already drilled hole and a guide part. (B) is a view of the state of (a) as viewed from below, (c) is a view of drilling from the state of (a) to the main body, and (d) is a view of (c) It is the figure which looked at the state of) from the lower part. It is a figure which shows the state drilled at right angles by the straight hole punch of embodiment, (a) is a figure which shows the state of the thin plate pierced by reverse L shape, (b) is a figure of the hole of (a). It is an enlarged view of a part, (c) is a figure of the state which opened the square hole of the large area, (d) is a figure of the state which opened the rectangular hole of the large area, (e) is a thin plate It is a figure of the state which opened the rectangular hole of the large area in the case made from. It is a perspective view of the conventional hand drill. It is a perspective view of the punch which has the protrusion of a prior art example.

[Linear drilling device]
A straight hole drilling device equipped with a straight hole punch according to an embodiment of the present invention will be described with reference to FIGS. In addition, FIG. 1 is a partial cross-sectional side view of the linear drilling device before the operation provided with the linear drilling punch of the embodiment. FIG. 2 is a partial cross-sectional side view of the straight hole punching device of FIG. 1 in a state where the straight hole punch is moved downward. In this specification, the term “straight line” or “straight line” is used to mean a line having a width of several millimeters to several tens of millimeters but having no curved portion when viewed macroscopically. ing.

  As shown in FIG. 1, the linear drilling device 10 has a driving shaft holding portion 12 standing on a shaft pressing portion of a base 11, and the driving shaft 13 is provided on the driving shaft holding portion 12 so as to be movable in the vertical direction. It has been. A straight hole punch 14 is attached to the tip of the driving shaft 13 by a shaft chuck portion 13a. Further, the tip end portion 15 a of the hand lever 15 is pivotally supported at the upper end portion of the driving shaft holding portion 12, and the shaft pressing portion 15 b of the hand lever 15 a is in contact with the upper end side of the driving shaft 13.

  When the handle 15c of the hand lever 15 is gripped and the hand lever 15 is rotated in the direction of arrow A, the shaft pressing portion 15b of the hand lever 15 is driven by the lever principle and pushes the upper end side of the shaft 13, as shown in FIG. Further, the driving shaft 13 moves downward. A shaft chuck portion 13a is provided at the tip of the driving shaft 13, and a straight hole punch 14 is attached to the shaft chuck portion 13a in a replaceable manner. A rectangular through hole 16 is formed at a position of the base 11 facing the straight hole punching punch 14, and both short sides of the rectangular through hole 16 form guide portions 16a and 16b, respectively.

  When the driving shaft 13 moves downward, the straight hole punch 14 attached to the shaft chuck portion 13a at the tip of the driving shaft 13 is guided by the guide portions 16a and 16b and passes through the rectangular through hole 16. Thereafter, the driving shaft 13 is moved upward by the repulsive force of the spring 17, and the hand lever 15 is rotated in the direction of arrow B to return to the original position.

[Straight hole punch]
Here, the specific structure of the punch 14 for straight hole drilling of embodiment is demonstrated using FIG. FIG. 3 is a six-face view of the punch 14 for straight hole drilling according to the embodiment. However, the rear view is not shown in FIG.

  This straight hole punch 14 is formed by a main body portion 14a made of a rectangular parallelepiped at the front end side and a projecting portion 14b made of a rectangular parallelepiped at the front end side partially protruding from the front end side of the main body portion 14a. The difference in stroke between the portion 14b and the main body portion 14a, that is, the height of the protruding portion 14b is at least 2 mm, preferably 2.5 mm or more. Further, the joint portion 14c of the straight hole punch 14 is attached and fixed to the shaft chuck portion 13a.

  Since the thickness of the aluminum plate used in a general hobby is about 0.5 mm to 2.0 mm, it can be handled manually if the height of the protruding portion 14b is about 2.5 mm. With an aluminum plate having a thickness larger than that, for example, an aluminum plate having a thickness of 10 mm or more, it seems that manual drilling is difficult, but it can be performed by electric operation instead of manual operation. In this case, the height of the protrusion 14b is preferably 10 mm or more in accordance with the thickness of the aluminum plate.

As shown in the right side view, the protruding portion 14b is square when viewed from the front end side, and the length C of one side thereof is the same as the length D of the short side of the rectangle on the front end side of the main body portion 14a. That is, C = D, and each angle is exactly 90 °. The fact that the protruding portion 14b is square is the reason why the vertical and horizontal positioning can be performed accurately when the operation of the straight hole punching punch 14 is repeated a plurality of times. It is preferable that form a square of the same size as the surface 14a ₁ of the front end side of the main body portion 14a is also the distal end side of the projecting portion 14b. However, the surface 14a ₁ of the front end side of the main body portion 14a is not necessarily a square, if the length of the short side the same as the D, may become a rectangle. In addition, the external appearance of the punch 14 for linear drilling of embodiment is shown in FIG.

[Drilling example 1]
Next, drilling of the aluminum plate 18 as a thin plate, which is a specific workpiece, will be described with reference to FIG. FIG. 5 is a diagram for explaining an operation of drilling an arbitrary position on a thin plate with the straight hole punch according to the embodiment, (a) is a positioning diagram before drilling, and (b) is lowered to a protruding portion. (C) is a view of the thin plate in the (b) state seen from below, (d) is a view further down to the main body, and (e) It is the figure which looked at the thin plate of the state of (d) from the downward direction.

  By rotating the hand lever 15 in the direction of arrow A, the straight hole punch 14 attached to the tip of the driving shaft 13 moves downward, and as shown in FIG. 14 is in contact with the aluminum plate 18. When the hand lever 15 is further rotated in the direction of arrow A, as shown in FIG. 5 (b), the protruding portion 14b on the tip side of the straight hole punch 14 penetrates the aluminum plate 18. At this time, as shown in FIG. 5C, a square hole 18a is formed.

Thereafter, when the hand lever 15 is further rotated in the direction of the arrow A, the outer side surface 14b of the protruding portion 14b located on one short side (the left side in FIG. 5B) of the main body portion 14a of the straight hole punch 14 is formed. _{by 1} moves is guided further downward one guide portion 16a, after the surface 14a ₁ of the lower end of the main body portion 14a of the straight drilling punch 14 is in contact with the aluminum plate 18, an aluminum plate 18 pierce-through To do. At this time, the other short side of the main body portion 14a (the right side in FIG. 5B) of the linear hole punch 14 is guided by the other guide portion 16b and moves downward. At this time, a rectangular hole 18b is formed as shown in FIG.

Thus, using a linear drilling apparatus 10 of the embodiment, the other short side of the outer side surface 14b ₁ and the main body portion 14a of the projecting portion 14b located at one short side of the body portion 14a of the straight drilling punch 14 The sides are smoothly guided by the guide portions 16a and 16b, respectively, so that the rectangular hole 18b having the same shape as that of the front end side of the main body portion 14a of the straight hole punch 14 can be accurately formed in the aluminum plate 18. At this time, if a hole or inscription for light positioning is provided in the aluminum plate 18 with a punch or the like in advance, the rectangular hole 18b can be smoothly formed at a predetermined place.

  Next, with reference to FIG. 6, a description will be given of a process of making an accurate rectangular hole linearly next to the rectangular hole 18b formed in the aluminum plate 18 in FIG. FIG. 6 is a diagram for explaining the operation of moving the thin plate after drilling in the step shown in FIG. 5 and further drilling. FIG. 6A shows the positioning of the thin plate by a part of the already drilled hole and the guide portion. (B) is a view of the state of (a) as viewed from below, (c) is a view of drilling from the state of (a) to the main body, (d) FIG. 8 is a view of the state of (c) as viewed from below.

First, by rotating the hand lever 15 in the direction of arrow A, as shown in FIG. 6A, the protruding portion 14b of the straight hole punch 14 is inserted into the rectangular hole 18a, and the aluminum plate 18 is shifted. The short side 18c on one side of the rectangular hole 18a is separated from the outer surface 14b1 on _one side of the projecting portion 14b, and the outer surface 14b1 on _one side of the projecting portion 14b and the guide portion 16a are mutually connected. Further, positioning is performed so that the outer side surface 14b ₂ (see FIG. 5B) on the other side of the protruding portion 14b and the short side 18d on the other side of the rectangular hole 18b are in contact with each other. In this case, since the shape of the protrusion 14b on the tip side is a square, the rectangular hole 18b and the protrusion 14b of the straight punch 14 can be accurately aligned.

When the hand lever 15 is further rotated in the arrow A direction in these positioned states, as shown in FIG. 6C, the front surface 14a ₁ of the main body portion 14a of the linear punch 14 is formed. Drills through the aluminum plate 18, the other side surface of the main body portion 14a of the punch 14 for straight hole drilling is guided by the guide portion 16b, and a square or rectangular hole 18f can be precisely drilled. Hole 18f is accurately positioned on the other side of the short side 18d and the guide portion 16a of the rectangular hole 18b which face 14a ₁ of the front end side of the straight drilling punch 14 is first formed on the aluminum plate 18 with front, rear, left and right Therefore, the rectangular hole 18b and the hole 18f can be accurately formed in a straight line without using a tool such as a gauge. Further, by continuing these steps, a rectangular hole having an arbitrary length, that is, a substantially linear hole can be opened silently and easily.

[Drilling example 2]
An example in which a hole is punched at right angles to a thin plate such as an aluminum plate by the straight hole punching of the embodiment will be described with reference to FIG. FIG. 7A is a view showing a state of a thin plate having an inverted L-shaped hole, FIG. 7B is an enlarged view of the hole portion of FIG. 7A, and FIG. 7C is a large-area square. (D) is a diagram of a state where a large-area rectangular hole is drilled, and (e) is a diagram of a state where a large-area rectangular hole is drilled in a thin plate case. FIG.

  First, by the method described in FIGS. 5 and 6, the aluminum plate 18 is punched four times in the horizontal direction by the straight hole punch 14 with the holes 18 b, 18 f, 18 g and 18 h to form a rectangular hole. . Thereafter, the aluminum plate 18 is rotated 90 degrees, the hand lever 15 is rotated in the direction of arrow A, and the protrusion 14b of the straight hole punch 14 is inserted into the hole 18h in the same manner as shown in FIG. When the hand punch 15 is further moved downward by moving the hand lever 15 in the direction of arrow A, a square or rectangular hole is formed in the aluminum plate 18 in the same manner as shown in FIG. 18i can be opened.

  Furthermore, by continuing these operations a plurality of times, the holes 18j, the holes 18k, etc. can be sequentially opened accurately, and as a result, as shown in FIGS. 7 (a) and 7 (b), it is bent at a right angle accurately. A reverse L-shaped hole can be easily formed. In addition, although the example which made the reverse L-shaped hole was shown here, as a matter of course, the L-shaped hole can also be drilled, and further, the number of drilling can be increased to form a closed straight line. Thus, a rectangular hole 18m having a large area as shown in FIG. 7C, a rectangular hole 18n having a large area as shown in FIG. Shape holes can also be drilled. Further, not only in the flat aluminum plate 18 but also in the box-shaped aluminum case 25 as shown in FIG. 7E, by performing the same operation, a linear shape, an L shape, and an inverted L shape are obtained. A square or rectangular hole 25a can be formed.

  As described above, according to the punch for linear drilling of the present invention and the linear drilling apparatus using the punch, for thin plates such as aluminum plates, copper plates, iron plates, plastic plates, and cases formed by these thin plates, A rectangular hole can be easily drilled at an arbitrary position, and by forming a plurality of holes using the hole, a straight hole, or an L shape or an inverted L shape, etc. It is possible to drill straight holes that are bent at right angles, and by repeating the drilling operation multiple times, it is possible to drill holes with a large area square, rectangle, or complex area with a large area square at right angles. Become.

  Therefore, according to the straight hole punch of the present invention and the straight hole drilling device using the punch of the present invention, especially at the time of manufacturing bobby work or electronic circuit, it is possible to place the user's favorite position at any position of the case such as an aluminum plate. Holes such as squares and rectangles can be easily formed, and when the plate thickness is thin, it can be drilled manually enough, and since it can be drilled quietly, it can be annoying to others even when used indoors. You will be able to work at any time without spending time.

DESCRIPTION OF SYMBOLS 10 ... Straight hole drilling device 11 ... Base 12 ... Shaft holding part 13 ... Driving shaft 13a ... Shaft chuck part 14 ... Straight hole punch 14a ... Main part 14a ₁ ... (Body part) tip side 14b ... Projection part 14b DESCRIPTION OF SYMBOLS ₁ ... One side surface (of protrusion part) 14b ₂ ... One side surface (of protrusion part) 14c ... Joint part 15 ... Hand lever 15a ... Tip part (hand lever) 15b ... Intermediate part 15c (hand lever) ... (Hand lever) gripping part 16 ... Rectangular through-holes 16a, 16b ... Guide part 17 ... Spring 18 ... Aluminum plate 18a ... Square hole 18b ... Rectangular hole 18c ... Short side of one side (rectangular hole) 18d ... Short side of other side (of rectangular hole) 18f-18k, 25a ... Hole 25 ... Aluminum case

Claims (5)

In a punch for straight hole drilling to make holes in thin plates by moving up and down,
The blade at the tip of the straight hole punch is formed of a main body portion having a rectangular parallelepiped on the front end side, and a protrusion portion partially protruding from the front end side of the main body portion on a square cuboid,
The straight punching punch, wherein the height of one side of the square on the tip side of the protrusion is the same as the length of the short side of the rectangle on the tip side of the main body.   The length of the said protrusion part is 2 mm or more, The punch for linear drilling of Claim 1 characterized by the above-mentioned.   3. The linear punching punch according to claim 1, wherein the three sides on the outer peripheral side of the protruding portion are flush with the three sides on the outer peripheral side of the main body portion. 4. A straight hole drilling device comprising the straight hole punch according to any one of claims 1 to 3,
A base on which a thin plate for drilling a straight hole is placed and a driving shaft holding portion is erected,
A driving shaft provided in the driving shaft holding portion so as to be movable in the vertical direction;
Have
A linear punch is attached to the lower end of the driving shaft,
A position substantially opposite to the front end side of the straight hole punch of the base is substantially the same as a cross section of the main body part of the straight hole punch, through which the main body part and the through part of the straight hole punch can penetrate. A straight hole drilling device, wherein rectangular through holes of the same size are formed. Furthermore, the tip is fixed to the upper end portion of the driving shaft holding portion so as to be rotatable, and the shaft pressing portion includes a hand lever arranged so as to contact the upper end side of the driving shaft,
A linear drilling device capable of moving the driving shaft up and down according to the principle of lever by rotating the hand lever.