Cutting tool

Abstract

To provide a cutting tool capable of easily performing cutting in a short time.SOLUTION: Provided is a cutting tool for cutting a projection part that projects in a projection direction crossing with an extrusion direction of an extrusion member. The cutting tool includes: a body part having a pair of blades facing each other so as to be spaced from each other and having the projection part therebetween, the pair of blades each being provided along the extrusion direction; and an extension part provided in the body part and extending in a crossing direction crossing with the projection direction.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to a cutting tool for cutting sections. [Background technology]

[0002] As a method for cutting an extruded shape along the longitudinal direction, which is the extrusion direction, a cutting method for cutting a part of a frame material made of an extruded shape along the longitudinal direction for a building fixture is known (see, for example, Patent Document 1). In this cutting method, a guide groove is provided in advance along the longitudinal direction in the part of the extruded shape to be cut. Then, the tip of a cutter blade is inserted along this guide groove to form a cut of a certain depth, and the part on the tip side of the guide groove is gripped with pliers and partially bent by applying force, and the extruded shape is cut off by metal fatigue. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-118321 A Summary of the Invention [Problem to be solved by the invention]

[0004] The above-mentioned cutting method requires the guide groove to be formed in advance in the portion of the extrusion material to be cut, and therefore cannot be applied to cutting a portion that is not the target of cutting. In addition, after the cutter cuts the guide groove, the tip side of the guide groove is grasped with pliers and force is applied to partially bend the extrusion material, so two steps are required, which makes the work complicated and takes a long time. In addition, the work of bending and separating the extrusion material with pliers requires a great deal of force because the extrusion material separates due to metal fatigue, which causes a problem of a heavy burden on the worker.

[0005] The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a cutting tool that is capable of easily performing cutting in a short time. [Means for solving the problem]

[0006] The main invention for achieving this objective is a cutting tool for cutting off a protruding portion that protrudes in a protruding direction that intersects the extrusion direction of an extruded profile, characterized in that the cutting tool has a main body portion having a pair of blades that face each other at a distance from each other across the protruding portion, each blade being arranged along the extrusion direction, and an extension portion that is provided on the main body portion and extends in a transverse direction that intersects the protruding direction. Other features of the present invention will become apparent from the following detailed description of the present invention and the accompanying drawings. Effect of the Invention

[0007] According to the present invention, it is possible to provide a cutting tool that can easily perform cutting in a short time. [Brief description of the drawings]

[0008] [Figure 1] FIG. 2 is a front view showing the cutting tool according to the embodiment. [Diagram 2] FIG. 2 is an exploded view showing the configuration of a resection tool according to the present embodiment. [Diagram 3] 3 is a view of the base member as seen from the arrow A in FIG. 2. [Figure 4] FIG. 4(a) is a plan view of the first blade member, and FIG. 4(b) is a front view of the first blade member. [Diagram 5] FIG. 5(a) is a plan view of the second blade member, FIG. 5(b) is a front view of the second blade member, and FIG. 5(c) is a view seen in the direction of arrow B in FIG. 5(a). [Figure 6] FIG. 6(a) is a diagram showing a state in which the resection tool with the second blade member removed is placed against a protruding portion, and FIG. 6(b) is a diagram showing a state in which the second blade member is attached. [Figure 7]7(a) is a view seen from the arrow C in FIG. 6(b), and FIG. 7(b) is a cross-sectional view taken along the line DD in FIG. 6(b). [Figure 8] 13A and 13B are diagrams showing a state in which a protruding portion is being cut off by a cutting tool. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment of a resection tool according to the present invention will be described with reference to the drawings. The excision tool 1 of the present invention is a cutting tool used, for example, in cutting out rails or fittings of water-stopping materials that protrude in a direction intersecting the extrusion direction in a frame material that constitutes the frame of a building fixture and is made of extruded profile material.

[0010] For example, there are cases where a new fixture is installed on the inner circumference of a fixture that has already been installed in a building, while leaving the existing frame. In this case, a new frame for a new fixture is attached to the inner circumference of the existing frame. At this time, if a height-raising attachment is installed between the existing frame and the new frame to prevent interference between the rails, etc., installed on the existing frame and the new frame, the opening formed by the new frame will be narrowed. For this reason, it is desirable to remove the protruding parts of the rails, etc., that protrude in a direction intersecting with the pushing direction in the existing frame, and to install the new frame without raising the height or with a small amount of height-raising. However, the work of removing the protruding parts is complicated and requires a lot of time and effort. The cutting tool of the present invention makes it possible to easily remove the protruding parts in a short time.

[0011] In the following description, an example of cutting off the protruding portion 30a of the lower frame 30 made of an extruded material as shown in Fig. 1 will be described, and the direction that is up and down when the excision tool 1 is attached when cutting off the protruding portion 30a will be referred to as the up and down direction, the direction that is left and right will be referred to as the left and right direction, and the longitudinal direction of the lower frame 30, which is the extrusion direction during molding, will be referred to as the longitudinal direction or extrusion direction. Even for each part of the excision tool 1, or even for each member constituting the excision tool 1 in a single state, the directions will be specified and described as the up and down direction, left and right direction, longitudinal direction, or extrusion direction when the excision tool 1 is attached.

[0012] 1 and 2, the excision tool 1 of this embodiment has a substantially rectangular parallelepiped base member 2, a first blade member 3 fixed to the base member 2 and having a first blade 3a, a second blade member 4 fixed to the first blade member 3 and having a second blade 4a, and an operating handle 5 and an auxiliary handle 6 fixed to the base member 2. Here, the base member 2, the first blade member 3, and the second blade member 4 correspond to a main body portion 20 having a pair of blades.

[0013] The base member 2 is a solid member made of steel. The base member 2 has one surface (hereinafter referred to as the first surface) 2a of six outer circumferential surfaces, a first blade member 3 is fixed to the first surface 2a, a second surface 2b that is perpendicular to the first surface 2a and serves as the upper surface, and an auxiliary handle 6 is fixed to a third surface 2c that forms the surface opposite to the first surface 2a of the base member 2. The operating handle 5 extends substantially perpendicular to the second surface 2b, and the auxiliary handle 6 extends substantially perpendicular to the third surface 2c.

[0014] As shown in Fig. 3, the first surface 2a and the third surface 2c are substantially rectangular, and a first screw hole 2d into which the auxiliary handle 6 is screwed is provided below the center of the third surface 2c. Also, first insertion holes 2e into which bolts 7 for fixing the first blade member 3 are inserted are provided at positions spaced apart in the extrusion direction from the center of the first screw hole 2d. Furthermore, the second surface 2b is provided at its center with a second screw hole 2f into which a joint pin 10 for fixing the operating handle 5 is screwed.

[0015] 4, the first blade member 3 has a fixed portion 3c extending in a direction perpendicular to a fixed surface 3b that abuts against the first surface 2a of the base member 2, and a curved portion 3d that is connected to the fixed portion 3c on the side opposite the base member 2 and that protrudes downward to form a curved shape. The first blade member 3 has a width substantially the same as the longitudinal width of the first surface 2a.

[0016] The tip of the curved portion 3d, i.e., the right end, has a first tip surface 3e which is a plane parallel to the fixed surface 3b, and a first blade 3a is provided upward at the right end of the curved portion 3d. The tip of the first blade 3a is located below the surface (upper surface) of the fixed portion 3c which faces the second blade member 4, and is provided linearly over the entire length in the extrusion direction.

[0017] The fixing surface 3b of the fixing portion 3c is provided with third screw holes 3f into which two bolts 7 for fixing to the base member 2 are respectively screwed. Furthermore, the fixing portion 3c is provided with three fourth screw holes 3g penetrating in the vertical direction, into which bolts 9 for fixing the second blade member 4 are screwed.

[0018] The first blade member 3 is fixed in place by having the fixing surface 3b abut against the first surface 2a of the base member 2, and two bolts 7 inserted into the first insertion holes 2e of the base member 2 being screwed into third screw holes 3f provided in the fixing portion 3c.

[0019] The second blade member 4 has approximately the same width in the extrusion direction and length in the left-right direction as the first blade member 3. The second blade member 4 has a substantially rectangular parallelepiped plate shape as shown in Fig. 5. The second blade member 4 is disposed above the first blade member 3 so as to overlap with the first blade member 3 in the vertical direction.

[0020] The second blade member 4, when placed on the upper side of the first blade member 3, has an opposing surface 4b that faces and is substantially parallel to the first surface 2a of the base member 2, and the right end of the second blade member 4 has a second tip surface 4c that is a flat surface parallel to the opposing surface 4b. In addition, a second blade 4a is provided at the right end of the second blade member 4, protruding downward, i.e., toward the first blade member 3 side.

[0021] The second blade 4a has tapers 4d at both ends in the extrusion direction such that the amount of protrusion gradually decreases toward each end. The second blade member 4 is provided with three second insertion holes 4e penetrating in the vertical direction, through which bolts 9 for fixing to the first blade member 3 are inserted. The tapers 4d provided on the second blade 4a may be linear or curved (arcuate).

[0022] The second blade member 4 faces the fixed portion 3c of the first blade member 3 located below, and with flat washer springs 8 arranged above and below the second blade member 4, three bolts 9 inserted through the second insertion hole 4e of the second blade member 4 and the flat washer springs 8 are screwed into the fourth screw holes 3g of the fixed portion 3c from above the second blade member 4, and fixed thereto.

[0023] 1, when the second blade member 4 is attached to the first blade member 3, the first blade 3a and the second blade 4a face each other with a gap between them in the vertical direction, and the second tip surface 4c of the second blade member 4 is configured to be substantially flush with the first tip surface 3e of the first blade member 3. In addition, a space S is formed between the curved portion 3d of the first blade member 3 and the second blade member 4 to accommodate the protrusion 30a to be excised.

[0024] The operating handle 5 is formed of a cylindrical pipe material, is provided on the base member 2, and is disposed along an upward direction intersecting with the left-right direction (projecting direction). Here, the operating handle 5 corresponds to an extension portion that is provided on the base and extends in an intersecting direction intersecting with the projecting direction.

[0025] At one end of the operating handle 5, a shaft portion 10b is inserted with a screw portion 10a of a joint pin 10 screwed into a second screw hole 2f provided in the center of the second surface 2b of the base member 2, and a screw 11 entering from the outside in the diameter direction of the operating handle 5 is screwed into a fifth screw hole 10c provided in the shaft portion 10b and fixed. Also, a D-cut portion 10d is provided on the shaft portion 10b on the base member 2 side of the screwing position of the screw 11, and the tip of a set screw (not shown) entering from a direction perpendicular to the entry direction of the screw 11 in the circumferential direction of the operating handle 5 and screwing into the operating handle 5 abuts against the D-cut portion 10d to prevent rotation.

[0026] The auxiliary handle 6 is a rod-shaped member that is thicker than the operating handle 5, and has a threaded portion 6a protruding from its tip. The auxiliary handle 6 has a grip portion 6b that an operator grasps, and the threaded portion 6a is screwed into a first screw hole 2d provided in the third surface 2c of the base member 2 and fixed. The grip portion 6b has a length that allows the operator to grasp it, and in this embodiment, the auxiliary handle 6 is formed shorter than the operating handle 5.

[0027] Next, a procedure for using the excision tool 1 will be described. Here, an example will be described in which a protruding portion 30a that protrudes toward the outside of a room in a bottom frame 30 of an existing sliding window fitting that has already been attached to the building frame and that is in order to attach a waterproofing material that is to be abutted from the inside of the room to the bottom end of the exterior sash is removed. When using the excision tool 1, the bolt 9 is removed and the second blade member 4 is detached from the first blade member 3 in advance.

[0028] First, at one end 30b (FIG. 7) in the longitudinal direction of the protruding portion 30a to be excised, as shown in FIG. 6(a), the first blade member 3 of the excision tool 1 from which the second blade member 4 has been removed is placed below the protruding portion 30a. At this time, the first blade 3a of the first blade member 3 is placed facing upward, i.e., toward the protruding portion 30a.

[0029] Next, the second blade member 4 is placed over the first blade member 3 and the protruding portion 30a, and the two bolts 9 that have passed through the second insertion hole 4e and the flat washer 8 are screwed into the fourth screw hole 3g of the first blade member 3 to fix it as shown in Fig. 6(b). At this time, as shown in Figs. 7(a) and 7(b), the resection tool 1 is placed so that the first blade 3a and the second blade 4a face each other with the protruding portion 30a in between. At this time, the distance between the first blade 3a and the second blade 4a is wider than the thickness of the protruding portion 30a.

[0030] Next, as shown in Fig. 8, the operator holds the auxiliary handle 6 with one hand and presses it in the opposite direction to the protruding direction of the protruding portion 30a while holding the operating handle 5 with the other hand and tilts the operating handle 5 around an axis along the protruding direction of the protruding portion 30a to rotate the resection tool 1. In this embodiment, as shown in Fig. 7, the operating handle 5 is tilted counterclockwise as viewed from the outside of the room to rotate the resection tool 1. At this time, the resection tool 1 rotates while the first blade 3a and the second blade 4a are bitten into the base end of the protruding portion 30a, and the portion of the protruding portion 30a where the first blade 3a and the second blade 4a come into contact is cut off.

[0031] Next, the operator slides the resection tool 1 in the longitudinal direction of the lower frame 30, and moves the first blade 3a and the second blade 4a to the side of the cut-off portion of the protruding portion 30a. After that, the operator tilts the operating handle 5 around an axis along the protruding direction of the protruding portion 30a to rotate the resection tool 1. As a result, a length approximately twice the blade width of the first blade 3a and the second blade 4a is cut off from one end 30b in the longitudinal direction of the protruding portion 30a.

[0032] Thereafter, the cutting tool 1 is slid in the longitudinal direction of the lower frame 30, and then the cutting tool 1 is rotated repeatedly, thereby cutting the protrusion 30a along the longitudinal direction until it is cut off to the opposite end of the protrusion 30a in the longitudinal direction, and then the protrusion 30a is cut off.

[0033] According to the above embodiment of the excision tool 1, the base member 2 has the first blade 3a and the second blade 4a facing each other across the protruding portion 30a to be excised, and has an operating handle 5 extending in a direction intersecting the protruding direction. Therefore, with the first blade 3a and the second blade 4a sandwiching the protruding portion 30a, the base member 2 to which the first blade member 3 and the second blade member 4 are fixed, i.e., the main body portion 20, can be easily rotated around an axis along the protruding direction.

[0034] At this time, since the first blade 3a and the second blade 4a are arranged along the extrusion direction, when the main body 20 rotates, the first blade 3a and the second blade 4a bite into the protruding portion 30a as the main body 20 rotates, so that it is possible to cut off the protruding portion 30a along the extrusion direction simply by operating the operating handle 5.

[0035] At this time, the first blade 3a and the second blade 4a rotate around one end of the first blade 3a or the second blade 4a in the pushing direction as the main body 20 rotates, so that the protruding portion 30a can be easily cut off with a small force due to the leverage. Therefore, the protruding portion 30a can be easily cut off in a short time.

[0036] In addition, the second blade 4a protruding toward the first blade 3a has a taper 4d in which the amount of protrusion gradually decreases from the center toward both ends in the extrusion direction, so that when the operating handle 5 is operated, the main body 20 can be easily rotated around an axis along the protruding direction.

[0037] In addition, the auxiliary handle 6 provided on the base member 2 is provided along the same protruding direction as the axis about which the main body 20 rotates. Therefore, when operating the operating handle 5, the auxiliary handle 6 is supported as an axis, making it possible to rotate the operating handle 5 more easily.

[0038] In addition, of the first blade 3a and the second blade 4a arranged on either side of the protrusion 30a, the first blade member 3 having the first blade 3a is fixed to the base member 2, and the second blade member 4 having the second blade 4a is detachable from the first blade member 3, so that the first blade member 3 can be more easily arranged in a narrow space than when the first blade 3a and the second blade 4a are integrally provided. Therefore, it is possible to cut off a protrusion provided in a more complicated position than with a tool in which two blade members are integral.

[0039] In the above embodiment, an example in which the main body 20 is composed of the base member 2, the first blade member 3, and the second blade member has been described, but the present invention is not limited to this. For example, the first blade member 3 may be provided integrally with the base. Also, the base member 2, the first blade member 3, and the second blade member may be formed integrally.

[0040] In the above embodiment, an example was described in which the first blade member 3 has the curved portion 3d, but the second blade member may have a curved portion, or each of the first blade member and the second blade member may have a curved portion. Also, as long as a gap capable of accommodating a protrusion can be formed between the first blade member and the second blade member, the curved portion may not be present. Also, versatility is improved by providing blade members of various shapes in advance and selecting and using a blade member according to the shape of the shaped material and the shape of the protrusion to be cut.

[0041] In the above embodiment, the bottom frame of a fitting is taken as an example of an extruded material, but the extruded material may be an upper frame, left and right vertical frames, each frame member that constitutes a frame, etc., and may be any extruded member other than fittings. In addition, the protruding portion to be cut may be a portion that protrudes in a direction intersecting the extrusion direction, such as a rail.

[0042] In the above embodiment, an example in which the second blade 4a is provided with the taper 4d has been described, but this is not limiting, and the first blade 3a may be provided with a taper, or the first blade 3a and the second blade 4a may each be provided with a taper. In addition, it is not necessary for either the first blade 3a or the second blade 4a to have a taper.

[0043] In the above embodiment, an example has been described in which the protruding portion 30a is excised from the base end by operating the operating handle 5 while pressing in the opposite direction to the protruding direction of the protruding portion 30a in order to excise the entire protruding portion 30a, but the present invention is not limited to this. For example, it is also possible to excise only the tip side of the protruding portion while leaving the base end side of the protruding portion by moving and arranging the positions of the first blade 3a and the second blade 4a in the protruding direction of the protruding portion.

[0044] The above-mentioned embodiment is for the purpose of facilitating understanding of the present invention, and is not intended to limit the present invention. The present invention can be modified or improved without departing from the spirit of the present invention, and it goes without saying that the present invention includes equivalents thereof. The present embodiment includes at least the following inventions.

[0045] Aspect 1: A cutting tool for cutting off a protruding portion that protrudes in a protruding direction that intersects with the extrusion direction of an extruded profile, characterized in having a main body portion having a pair of blades that face each other at a distance from each other across the protruding portion, each blade being arranged along the extrusion direction, and an extension portion that is provided on the main body portion and extends in a transverse direction that intersects with the protruding direction.

[0046] According to the cutting tool of embodiment 1, the main body has a pair of blades facing each other across the protruding portion to be cut, and has an extension portion extending in a direction intersecting the protruding direction, so that the main body with the pair of blades clamping the protruding portion can be easily rotated around an axis along the protruding direction.

[0047] At this time, since the pair of blades are provided along the extrusion direction, when the main body rotates, the blades bite into the protruding portion as the main body rotates, so it is possible to cut off the protruding portion along the extrusion direction simply by operating the extension. Also, at this time, the blades rotate around one end of the blade in the extrusion direction as the main body rotates, so it is possible to easily cut off the protruding portion with little force due to the leverage action. Therefore, it is possible to easily cut off the protruding portion in a short time.

[0048] Aspect 2: A cutting tool as described in Aspect 1, characterized in that each of the pair of blades is arranged to protrude in opposite directions, and at least one of the pair of blades is formed so that the amount of protrusion gradually decreases from the center to both ends in the extrusion direction.

[0049] According to the cutting tool of aspect 2, at least one of the pair of blades is formed so that the amount of protrusion gradually decreases from the center toward both ends in the extrusion direction, so that when the extension portion is operated, it can be more easily rotated around an axis along the protrusion direction.

[0050] Aspect 3: The excision tool according to aspect 1 or 2, characterized in that the main body portion is provided with an auxiliary handle along the protruding direction.

[0051] According to the excision tool of aspect 3, the auxiliary handle provided on the main body portion is provided along the same protruding direction as the axis about which the main body portion rotates. Therefore, when operating the extension portion, the auxiliary handle is supported as an axis, making it possible to easily rotate the extension portion around the axis.

[0052] Aspect 4: A cutting tool as described in any one of Aspects 1 to 3, characterized in that the main body portion has two blade members, each of which is equipped with one of the pair of blades, and which are detachably joined to each other.

[0053] According to the excision tool of the fourth aspect, the two blade members, each of which has one of a pair of blades arranged on either side of the protrusion, are joined separably to each other, so that the two blade members can be arranged on the excision target in a separated state. Therefore, the blade members can be arranged in a narrow space more easily than when the blade members are integrally arranged. Therefore, it is possible to easily excise a protrusion arranged in a more complicated position than with a tool having two integrated blade members. [Explanation of symbols]

[0054] 1 cutting tool, 2 base member, 3 first blade member, 3a first blade, 4 second blade member, 4a second blade, 4d taper, 5 Operating handle (extension), 6 Auxiliary handle, 20 main body, 30 lower frame, 30a protrusion,

Claims

1. A cutting tool for cutting off a protruding portion protruding in a protruding direction intersecting with the extrusion direction of the extruded profile, a main body portion having a pair of blades facing each other with a gap therebetween and each blade is provided along the extrusion direction; an extension portion provided on the main body portion and extending in a direction intersecting the protruding direction; A cutting tool comprising:

2. 2. The excision tool of claim 1, The pair of blades are provided so as to protrude in directions opposite to each other, A cutting tool, characterized in that at least one of the pair of blades is formed so that the amount of protrusion gradually decreases from the center toward both ends in the extrusion direction.

3. 3. An excision tool according to claim 1 or 2, The cutting tool is characterized in that the main body portion is provided with an auxiliary handle along the protruding direction.

4. 3. An excision tool according to claim 1 or 2, The cutting tool, characterized in that the main body portion has two blade members each having one of the pair of blades and being detachably joined to each other.

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