JP2009219679A - Cutting tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cutting tool which makes it possible to securely hold a material to be cut when cutting, and to cut the material stably and securely at once. <P>SOLUTION: The cutting tool is provided with the cutting edge 1 and a receiving part 2 for receiving the material to be cut. A receiving butting part 3 is provided for receiving a cutting force of the cutting edge 1 acting on the material to be cut in a part of an outer surface of the material. A regulating butting part 4 is provided for receiving the cutting force in the other part of the material. A holding part 5 of the material to be cut, keeping the receiving butting part 3 and the regulating butting part 4 integral so as to rotate while keeping an angle between the two butting parts, is rotatably provided on the receiving part 2. When cutting, the cutting force acts on both of the butting parts 3 and 4. A rotation regulating means (the receiving part 2) is provided for regulating the holding part 5 so as not to rotate by the cutting force. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention is a cutting tool for cutting a material to be cut such as a wiring / piping material protection duct or a pipe made of vinyl chloride, and a cutting blade that rotates around a blade axis to cut the material to be cut; The present invention relates to a cutting tool that includes a receiving portion that receives a workpiece, and a tool body that is provided on the opposite side of the blade axis with respect to the receiving portion and that has an operation portion for cutting the cutting blade.

  Various cutting tools have been proposed for cutting workpieces such as wiring / piping material protection ducts and vinyl chloride pipes.

  FIGS. 16A and 16B illustrate a cutting tool as a background art of the present invention, in which FIG. 16A is a front view thereof, and FIG. 16B is a top view showing the position of FIG.

  The cutting tool 20 rotates about a cutting blade 11 that rotates about a cutting shaft 11a, a receiving portion 12 that receives a workpiece (large diameter pipe) P1, and a rotating shaft 15a that is the same as the cutting shaft 11a. Then, the holding arm 15 that holds the material to be cut P1 at a position away from the cutting blade 11 by a predetermined distance, the tool main body 16 including the cutting blade 11, the receiving portion 12, and the like, and the cutting blade 11 are rotated and cut. The operation unit 17 includes a fixed handle 17A and a movable handle 17B.

  The cutting tool 20 is provided with a holding arm 15 that presses the workpiece P1 coaxially with the cutting shaft 11a with respect to the arc-shaped receiving portion 12, and can also cut and hold a small workpiece (small diameter pipe) P2. Since the arm 15 presses the workpieces P1 and P2 at positions separated from the cutting blade 11 by a predetermined distance, the cutting edge can be formed at a right angle (paragraphs [0022] and [0023] in Patent Document 1). is there.

However, the holding arm 15 of the cutting tool 20 is released by mistake (for example, by being caught somewhere) or by an external force when the workpieces P1 and P2 are cut. There was a fear that it could not be avoided. Therefore, the materials P1 and P2 to be cut are not firmly fixed, the cutting work becomes unstable, and the cutting work may have to be redone.
JP 2003-10571 A (FIGS. 1 and 2)

The present invention is intended to solve the above-described problem, and provides a cutting tool in which a material to be cut is firmly fixed at the time of cutting, and the material to be cut can be cut stably and reliably without re-execution. Objective.

The cutting tool according to claim 1 is provided on a side opposite to the blade shaft with respect to a cutting blade that rotates about the blade axis to cut the material to be cut, a receiving portion that receives the material to be cut, and the receiving portion. A cutting tool provided with a tool body provided with an operation unit for performing a cutting operation of the cutting blade,
A receiving contact portion that receives the cutting force of the cutting blade acting on the material to be cut at a part of the outer surface of the material to be cut and a regulating contact portion that receives at another portion different from the part of the material to be cut. An object to be cut holding part integrated so as to rotate while maintaining an angle therebetween is provided rotatably on the receiving part,
At the time of cutting, the cutting force from the cutting blade acting on the material to be cut is applied to both the receiving contact portion and the regulating contact portion,
It is characterized by comprising a rotation restricting means for restricting rotation of the workpiece holding part by this cutting force.

  In the present invention, the restricting contact portion mainly serves to restrict the material to be cut from moving away from the cutting blade, and the receiving contact portion mainly refers to the material to be cut. It plays the role of receiving it.

The cutting tool according to claim 2 is dependent on claim 1, and the workpiece holding portion is further provided with the workpiece at a position on the cutting blade side with respect to the receiving contact portion and the regulating contact portion. An opening is provided for receiving from a direction orthogonal to the longitudinal axis direction of the material to be cut, and the receiving contact portion and the restricting contact portion rotate while maintaining an angle between them while forming the opening. Integrated to
The to-be-cut material holding portion is rotatable from an open state in which the cut material is received without being interfered with the cutting blade from the opening to a cut state for cutting the accommodated to-be-cut material. It is characterized by.

  The cutting tool according to claim 3 is dependent on claim 1, and the workpiece holding portion includes a plurality of receiving contact portions and restriction contact portions corresponding to different workpieces, and the workpiece holding portion. It is characterized by being able to cut | disconnect a different to-be-cut material by a pair of each receiving contact part and a regulation contact part by rotating.

  According to a fourth aspect of the present invention, the cutting tool is dependent on any one of the first to third aspects, and the receiving portion constitutes a rotation restricting means.

  A cutting tool according to a fifth aspect is dependent on any one of the first to fourth aspects, wherein the workpiece to be cut received by the workpiece holding portion constitutes a rotation restricting means.

  The cutting tool according to claim 6 is dependent on any one of claims 1 to 5, and the receiving contact portion or / and the restriction contact portion are such that the material to be cut received by the receiving contact portion during cutting is a cutting blade. This prevents the deformation of the portion that receives the cutting force and deforms.

  The cutting tool according to claim 7 is dependent on any one of claims 1 to 6, and the receiving contact portion or the restriction contact portion follows a shape before deformation of a portion where the material to be cut is deformed during cutting. It is characterized in that it is a deformation preventing portion of a different shape.

According to the cutting tool according to claim 1, a cutting blade that rotates about the blade axis to cut the material to be cut, a receiving portion that receives the material to be cut, and a side opposite to the blade shaft with respect to the receiving portion A cutting tool provided with a tool body provided with an operation unit for performing a cutting operation of the cutting blade,
A receiving contact portion that receives the cutting force of the cutting blade acting on the material to be cut at a part of the outer surface of the material to be cut and a regulating contact portion that receives at another portion different from the part of the material to be cut. An object to be cut holding part integrated so as to rotate while maintaining an angle therebetween is provided rotatably on the receiving part,
At the time of cutting, the cutting force from the cutting blade acting on the material to be cut is applied to both the receiving contact portion and the regulating contact portion,
Since it has a rotation restricting means that restricts the cutting material holding part from rotating by this cutting force, the material to be cut is firmly fixed at the time of cutting, and the material to be cut can be cut stably and securely. In addition, this is the basis for enabling the configuration of claim 2 or claim 3.

According to the cutting tool of claim 2, in addition to the effect of claim 1, the material holding part to be cut is further cut at a position on the cutting blade side with respect to the receiving contact part and the regulation contact part. An opening for receiving the material from a direction perpendicular to the longitudinal axis direction of the material to be cut, and the receiving contact portion and the restricting contact portion form an opening while maintaining an angle between them. Integrated to rotate,
Since the material to be cut holding portion is rotatable from the open state in which the material to be cut is received without being interfered with the cutting blade from the opening to the cutting state for cutting the material to be cut contained. Therefore, an extra space is not required for accommodating the material to be cut.

  According to the cutting tool of claim 3, in addition to the effect of claim 1, the workpiece holding portion includes a plurality of pairs of receiving contact portions and restriction contact portions corresponding to different materials to be cut, and the workpiece to be cut By rotating the material holding portion, different materials to be cut can be cut by a pair of the receiving contact portion and the restricting contact portion, so that a plurality of types of materials to be cut can be cut.

  According to the cutting tool according to claim 4 or 5, in addition to the effect of any one of claims 1 to 3, since the specific configuration of the rotation restricting means is defined, the rotation restricting means can be easily realized. can do.

  According to the cutting tool of claim 6, in addition to the effect of any one of claims 1 to 6, the receiving contact portion or the regulating contact portion is a material to be cut received by the receiving contact portion at the time of cutting. Since this prevents the deformation of the portion that is deformed by receiving the cutting force by the cutting blade, the deformation can be prevented in addition to restricting the movement.

  According to the cutting tool of the seventh aspect, in addition to the effect of any one of the first to sixth aspects, the receiving abutting portion or the regulating abutting portion is not deformed before the portion where the material to be cut is deformed during cutting. Since it is set as the deformation | transformation prevention part of a shape along a shape, a deformation | transformation prevention effect can be exhibited more fully.

Embodiments of the present invention will be described below with reference to the drawings.
<Embodiment 1>
FIG. 1 shows an example of the cutting tool of the present invention. (A) is a front view thereof, (b) is a side view thereof, and FIG. 2 (a) is a protection of the protective duct cutting tool of FIG. The front view which shows the state which the duct holding | maintenance part and the cutting blade opened to the maximum, (b) is a cross-sectional view which shows an example of the wiring and piping material protection duct which is the cutting object of this protection duct cutting tool.

  First, a wiring / pipe material protection duct DW, which is an example of a material to be cut of the protection duct cutting tool 10, will be described with reference to FIG.

  This wiring / piping material protection duct DW is a two-row protection duct that can accommodate two wirings / piping materials in parallel, and is made of synthetic resin and has a flexible contact surface that comes into contact with a wall surface, etc. Between the main body Da provided with Da, the cover portion Db that is detachably attached to the main body portion Da by mutual flexibility, and between the wiring / pipe material to be accommodated in the main body Da and the cover portion Db And a protective material Dc for protection and heat insulation inserted as needed.

  The side portion of the cover portion Db is referred to as a side wall Dba, and the anti-contact surface Daa side, that is, the upper surface portion is referred to as a top wall Dbb. The wiring / piping material protection duct DW may or may not use the protective material Dc. In any case, the wiring / piping material protective duct DW is configured as shown in FIG. Therefore, it is easy to bend and deform.

  The cutting tool 10 has a cutting blade 1 that rotates about the blade shaft 1a to cut the material DW, a receiving portion 2 that receives the material DW, and a blade shaft 1a opposite to the receiving portion 2. It is a cutting tool provided with the tool main body 6 provided with the operation part 7 for the cutting operation of the cutting blade 1 provided in the side.

  The characteristic is that the cutting force of the cutting blade 1 acting on the material to be cut DW is received by the receiving contact portion 3 that receives a part of the outer surface of the material to be cut DW and the other part different from the part of the material to be cut. The abutting portion 4 is provided in the receiving portion 2 so as to be rotatable so as to be rotated so as to be rotated while maintaining an angle between them.

  A further feature of the cutting tool 10 is that, when cutting, the cutting force from the cutting blade 1 acting on the workpiece DW acts on both the receiving contact portion 5 and the restricting contact portion 4. There exists a rotation control means (in this case, receiving part 2) which controls that the to-be-cut material holding part rotates by this cutting force.

  The present invention is characterized by a workpiece holding portion 5 in which the co-rotating receiving contact portion 3 and the restricting contact portion 4 are integrated, the details of which will be described later. On the other hand, the tool main body 6 side is the same as the cutting tool described in, for example, Japanese Patent Application Laid-Open No. 2005-312522 (by the applicant), and is not described in detail, but has the following configuration.

  The blade shaft 1a is provided with a spring 1b that urges the cutting blade 1 in the opening direction. On the opposite side of the blade shaft 1a of the cutting blade 1, ratchet teeth 1c for sequentially rotating the cutting blade 1 are provided. Is provided. The ratchet lever 1d meshes with the ratchet teeth 1c to hold the rotational position of the cutting blade 1 each time and can release the meshing.

  The lock lever 1e is also engaged with the ratchet teeth 1c to hold the rotational position of the cutting blade 1 each time and can release the engagement. The operation unit 7 includes a fixed handle 7A on the fixed side and a rotating handle 7B that rotates about the handle shaft 7a.

  The operation side ratchet lever 7b rotates the ratchet teeth 1c counterclockwise in order from the fully opened state of the cutting blade 1 in FIG. 2 in accordance with the operation of the rotation handle 7B. At that time, the ratchet lever 1d inside the fixed handle 7A prevents the cutting blade 1 from returning clockwise.

  Further, the outer lock lever 1e of the fixed handle 7A serves as a lock when the cutting blade 1 is rotated counterclockwise to such an extent that the inner ratchet lever 1d cannot be locked. The hook lever 7c is for scratching the rotating handle 7B with respect to the fixed handle 7A when the cutting tool 10 is not used to maintain the closed state of the operation unit 7.

  With such a configuration, the cutting tool 10 rotates the cutting blade 1 counterclockwise on these drawings from the fully open state in FIG. 2 to the fully closed state in FIG. 1, and the ratchet lever 1d. By operating the lock lever 1e and the like, the fully opened state of FIG. 2 can be obtained.

  The to-be-cut material holding | maintenance part 5 has the receiving contact part 3 and the control contact part 4 as a "U" shape as a whole, More specifically, the double row form which is the main to-be-cut material DW of this cutting tool 10 The contact surface Daa, the side wall Dba, and the top wall Dbb of the protective duct are in contact with each other, with the holding portion rotating shaft 5a provided at the end portion facing the blade shaft 1a of the receiving portion 2 as a whole. As a rotation.

  Moreover, as shown in FIG.1 (b), although the to-be-cut material holding | maintenance part 5 is connected in the vicinity of the holding | maintenance part rotation axis | shaft 5a, it is made to let the cutting blade 1 pass in other parts. Thus, the cutting material 1 can be cut with the cutting blade 1 while the material to be cut is held in the material holding portion 5 to be cut.

  The manner in which the rotation about the blade axis 1a of the cutting blade 1 and the rotation about the holding portion rotation shaft 5a of the workpiece holding portion 5 are mutually in the fully closed state of FIG. In the fully closed state in FIG. 2, the cutting blade 1 enters the bifurcated workpiece holding part 5 and further reaches the position of the receiving part 2 in the bifurcated state. It will be.

  The receiving portion 2 receives the material DW to be cut through the receiving contact portion 3, and a small receiving contact portion that receives a smaller material DS (see FIG. 10) on the side close to the blade shaft 1a. A small workpiece holding portion 5C composed of 3C and a small regulation contact portion 4C is provided.

  The regulation abutting portion 4 is provided in a right-angle direction via a slanted portion on the side wall regulating abutting portion 4A rising from the receiving abutting portion 3 at a right angle, and the receiving abutting portion 3 And a ceiling wall restricting contact portion 4B parallel to the top wall.

The material to be cut is received from the direction orthogonal to the longitudinal direction of the material to be cut at a position on the cutting blade 1 side with respect to the material to be cut holding portion 5 and the receiving contact portion 3 and the restriction contact portion 4. With an opening 8;
The receiving contact portion 3 and the restricting contact portion 4 are integrated so as to rotate while maintaining an angle between them while forming the opening 8.

  That is, the to-be-cut material holding | maintenance part 5 can rotate from the open state which receives the to-be-cut | disconnected material DW without interfering with the cutting blade 1 from the opening part 8 to the cutting state for cut | disconnecting the accommodated to-be-cut | disconnected material DW. It has been done.

  From this, the state which cut | disconnects the to-be-cut material DW (double-row type | mold protective duct) using this cutting tool 10 is demonstrated using FIGS. 3-9. In addition, the same code | symbol is attached | subjected about the part same as the part already demonstrated from this, and duplication description is abbreviate | omitted.

  FIG. 3 is a perspective view showing a state in which a material to be cut is set in an open material holding portion to be cut, and FIG. It is a perspective view which shows before cut | disconnecting a to-be-cut material holding | maintenance part from the state of (a).

  First, when cutting, the material to be cut DW is put into the material holding part 5 from the opening 8 of the material holding part 5 with the material holding part 5 and the cutting blade 1 fully opened. . At this time, the workpiece holding part 5 is rotatable, and the opening 6 can be moved away from the cutting blade 1, so that the cutting blade 1 is open with a large space. The long cut material DW can be easily put by moving it in the direction perpendicular to the longitudinal axis direction.

  That is, even when there is no space for moving the workpiece DW in the longitudinal axis direction in the surrounding space, the setting operation for cutting can be performed. At this time, the contact surface Daa of the main body portion Da is held in contact with the receiving contact portion 3, and the side wall Dba and the top wall Dbb of the cover portion Db are held in contact with the restriction contact portion 4.

  Next, when the workpiece holding portion 5 containing the workpiece DW is closed (cut) as shown in FIG. 3B and the rotation operation of the rotary handle 7B is repeated, the cutting blades 1 are sequentially moved. It rotates to approach the material to be cut DW and come into contact. FIG. 4 is a front view of the state of FIG. 3B as viewed from the front side of the material to be cut.

  5 is a front view showing a state in which the cutting blade is further cut into the workpiece from the state of FIG. 4, and FIG. 6 is a state in which the cutting blade is further cut into the workpiece from the state of FIG. FIG. 7 is a front view showing a state in which the cutting blade is further cut into the material to be cut by about two thirds from the state of FIG. 6, and FIG. 8 is the cutting of the material to be cut by the cutting blade is completed. It is a front view which shows a state.

  Here, attention should be paid to the state of FIG. At the time of cutting, the cutting force from the cutting blade 1 acting on the workpiece DW acts on both the receiving contact portion 3 and the restricting contact portion 4. Since the angle between them is maintained and fixed so as to co-rotate, the cutting force of the cutting blade 1 is firmly received by both sides, the movement of the material to be cut DW is restricted, and the cutting is started in a fixed state. .

  At this time, the material-to-be-cut holding part 5 tries to rotate by the cutting force from the cutting blade 1, but the rotation is received by the receiving part 2. That is, in this example, the receiving part 2 functions as a rotation restricting means 2 that restricts the material holding part 5 from being rotated by this cutting force.

  Note also the state of FIG. Further, even when the cutting blade 1 is further rotated, the protective material Dc is cut, and the upper portion of the main body Da is started to be cut. This is because the bottom surface of the main body portion Da is received by the receiving contact portion 3, and the side surface and the top surface of the cover portion Db are the restriction contact portions 4 (side wall restriction contact portions 4A and top wall restriction contact portions 4B). It seems to be the effect because it is regulated.

  9A is an external perspective view showing a material to be cut by the cutting tool of FIG. 1, and FIG. 9B is an external perspective view showing the material to be cut by a cutting tool that does not have a regulating contact portion. It is.

  The material to be cut DW of FIG. 9A cut by the cutting tool 10 provided with the material to be cut holding portion 5 (regulating contact portion 4) of the present invention is a main body portion Da, a cover portion Db, and a protective material Dc. All of these are cut without unevenness at right angles to the axial direction of the workpiece DW.

  Compared to this, according to the applicant's test, the material DW cut by the cutting tool without the restriction contact portion 4 has its body portion Da and cover as shown in FIG. The cut surfaces of the part Db and the protective material Dc are uneven and cannot be used as they are.

  Further, as can be seen from this cutting process, according to the cutting tool 10, during the cutting, the receiving contact portion 3 is pushed by the cutting blade 1, so that the regulating contact portion 4 that rotates together with the cutting blade 1 is also wrong. Even if it does not move, it can receive the material DW to be cut and prevent its movement and deformation.

  That is, according to this cutting tool 10, the material to be cut is firmly fixed at the time of cutting, and the material to be cut DW can be cut stably and reliably. Further, as described above, in this embodiment, the restricting contact portion 4 prevents movement of the material to be cut DW during cutting.

  Furthermore, if the regulation contact portion 4 corresponds to the shape of the material to be cut DW, the deformation can be prevented more effectively. In that respect, the regulating contact portion 4 and the material-to-be-cut material holding portion 5 including the receiving contact portion 3 can be said to be a deformation preventing portion that plays a role of preventing deformation of the material to be cut DW.

  Moreover, in this Embodiment 1, the to-be-cut material holding | maintenance part 5 provided with the opening part 8 is for the cutting | disconnection of FIG.3 (b) from the open state for accommodating the to-be-cut | disconnected material DW of Fig.3 (a). In this way, the workpiece DW is received in a shape that encloses the workpiece DW from three sides, and can be fixed at the time of cutting to prevent deformation. In addition, the effect of being able to accommodate the material to be cut without wasteful space is achieved.

  FIG. 10A is an external perspective view showing a material to be cut that is smaller than the material to be cut shown in FIG. 3, and FIG. 10B shows a mode in which the material to be cut in FIG. FIG.

  The material to be cut DS in FIG. 10A is a single-row protective duct that accommodates a single row of wiring / piping materials, compared to the material to be cut DW in FIG. However, the degree of flexibility is small, and a similar main body Dd, cover De and protective material Df are provided.

  When cutting such a small material to be cut DS, the material to be cut holding portion 5 is opened, the small material to be cut holding portion 5C is viewed, and the material to be cut DS is shown in FIG. 10B. And then cut. In this case, even if it is a short small regulation contact part 4C, since the to-be-cut | disconnected material DS has little bending and a deformation | transformation, the cut surface becomes right-angled in the longitudinal axis direction, and does not have an unevenness | corrugation.

  In other words, according to the cutting tool 10, the workpiece DW that is large and more flexible is preferably used by using the workpiece holding portion (deformation prevention portion) 5. The cutting material holding part (deformation preventing part) 5 is rotated to be in an open state, and the cutting material holding part 5C can be suitably cut.

  That is, in this cutting tool 10, the workpiece holding portions 5, 5C include a plurality of pairs of receiving contact portions 3, 3C and restriction contact portions 4, 4C corresponding to different workpieces to hold the workpiece. By rotating the portion 5, different workpieces can be cut by a pair of receiving contact portions 3, 3C and regulating contact portions 4, 4C, and the tool 10 suitably cuts different workpieces. be able to.

<Embodiment 2>
11A and 11B show another example of the cutting tool of the present invention. FIG. 11A is a front view showing a state in which one workpiece is cut by the cutting tool, and FIG. The front view which shows the state which cut | disconnects a cutting material, (c) is a front view which shows the state which cut | disconnects another to-be-cut material with the same cutting tool.

  As can be seen from FIGS. 11A, 11B, and 11C, this cutting tool 10A has a receiving material holder 5G that receives different cutting materials compared to the cutting tool 10 of FIG. A plurality of pairs of contact portions 3D, 3E, 3F and restriction contact portions 4D, 4E, 4F are provided, and different cut materials DW1, by rotating the cut material holding portion 5G around the holding portion rotation shaft 5b, The difference is that DW1 and DW3 can be cut by a pair of receiving contact portions 3D, 3E, and 3F and restricting contact portions 4D, 4E, and 4F.

  The pair of receiving contact portions 3D, 3E, and 3F and the restricting contact portions 4D, 4E, and 4F are referred to as individual workpiece holding portions 5D, 5E, and 5F, respectively. The receiving part 2A which can install such a to-be-cut material holding part 5G so that rotation is possible is made into the receiving part 2A.

  In this embodiment, the to-be-cut materials DW1, DW2, and DW3 have the same height and the widths are increased in order. Correspondingly, the individual to-be-cut material holding portions 5D, 5E, and 5F. However, the restriction contact portions 4D, 4E, and 4F are shaped to move away from the cutting blade 1.

  In this embodiment, the workpieces DW1, DW2, and DW3 placed on the individual workpiece holders 5D, 5E, and 5F are pushed by the cutting blade 1 and are about to rotate. The cutting materials DW1, DW2, and DW3 are regulated by contacting the receiving portion 2A.

  In other words, in this case, the materials to be cut DW1, DW2, and DW3 received by the material holding portions 5D, 5E, and 5F constitute a rotation restricting means together with the receiving portion 2A, and the materials to be cut DW1, DW2, and DW3 are cut. can do.

  In this case, the regulation contact portions 4D, 4E, and 4F are regulated by contacting only the side walls of the materials to be cut DW1, DW2, and DW3, but are not configured to contact the top wall. However, at the time of cutting, the cutting force of the cutting blade 1 is firmly received together with the receiving contact portions 3D, 3E, and 3F that rotate together, so that the materials to be cut DW1, DW2, and DW3 are fixed and held. According to this, the same effect as that of the cutting tool 10 of FIG. 1 can be exhibited, and the types of materials to be cut can be three or more.

  Further, according to the cutting tool 10A, the regulation contact portions 4D, 4E, and 4F do not have a portion that contacts the top wall of the materials to be cut DW1, DW2, and DW3. In particular, the individual materials to be cut DW1, DW2, and DW3 are accommodated from the direction orthogonal to the axial direction even in the cut state without opening each individual material to be cut 5D, 5E, and 5F. Can be used even in places where the surrounding space is small.

  As will be described later, the restricting contact portion receives the outer surface of the material to be cut at a portion different from a part of the outer surface received by the receiving contact portion, and each of them receives the cutting force of the cutting blade 1. If it is configured so as to receive, it indicates that the basic configuration requirement of the present invention is sufficient.

  12A and 12B show another example of the cutting tool of the present invention. FIG. 12A is a front view showing a state in which one material to be cut is cut by the cutting tool, and FIG. The front view which shows the state which cut | disconnects a cutting material, (c) is a front view which shows the state which cut | disconnects another to-be-cut material with the same cutting tool.

  This cutting tool 10B is different from the cutting tool 10A of FIG. 11 in that a material to be cut 5G ′ rotates a plurality of individual material to be cut 5D ′, 5E ′, and 5F ′ to be different from each other. Although the points corresponding to the materials DW1, DW2, and DW3 are common, the restriction contact portions 4D ′, 4E ′, and 4F ′ are in contact with the top walls of the materials to be cut DW1, DW2, and DW3. The difference is that the contact portions 4a, 4b, and 4c are provided.

  According to the cutting tool 10B having such a configuration, in addition to the same effects as those of the cutting tool 10A of FIG. 11, it is possible to better exhibit the fixation and prevention of deformation of the workpieces DW1, DW2, and DW3.

  In addition, in the cutting tool 10B having this configuration, the to-be-cut material holding portion 5G ′ is rotatable, which means that the individual to-be-cut material holding portions 5D ′, 5E ′, and 5F ′ are opened and cut. It also has the effect of being able to.

<Embodiment 3>
FIG. 13 shows another example of the cutting tool of the present invention, in which (a) is a front view thereof and (b) is a side view thereof.

  Compared with the cutting tool 10 in FIG. 1, the cutting tool 10C has a pipe-like material to be cut, the receiving portion 2B receives a part of the outer periphery of the cutting material P, and the cutting material holding portion 5H A receiving contact portion 3G that receives the force with which the cutting blade 1 cuts the workpiece P in cooperation with the receiving portion 2B, and the material to be cut with the workpiece P sandwiched between the receiving contact portion 3G The difference is that a restriction contact portion 4G integrated so as to be pressed against P is provided.

  The to-be-cut material holding | maintenance part 5H rotates centering on the holding | maintenance part rotation axis | shaft 5c (it is provided in the front-end | tip part of the receiving part 2B) of the intermediate part of the receiving contact part 3G and the control contact part 4G. The material P to be cut is fixedly held by the receiving contact portion 3G and the regulation contact portion 4G by using the force accompanying the cutting of the cutting blade 1 described above.

  That is, this cutting tool 10C can exhibit the same effect as the cutting tool 10 of FIG. Moreover, according to this cutting tool 10C, as can be seen from the drawing, it is possible to suitably cut even a pipe-shaped workpiece having a slightly different external shape than the workpiece P shown in the drawing.

  Further, in this cutting tool 10C, the material to be cut P held by the material to be cut holding portion 5H cooperates with the receiving portion 2B to constitute a rotation restricting means, so that the cutting tool 10A in FIG. Common.

  FIG. 14 shows another example of the cutting tool of the present invention, in which (a) is a front view thereof and (b) is a side view thereof.

  The cutting tool 10D is similar to the cutting tool 10C for the pipe-shaped workpiece P shown in FIG. 13 in that it similarly cuts the pipe-shaped workpiece P. 5I holds the workpiece P by itself, and the receiving portion 2C is a rotation restricting means for indirectly regulating the rotation of the workpiece holding portion 5I (in this respect, it is common with the cutting tool 10 of FIG. 1). .) Is different.

  The workpiece holding portion 5I is formed by integrally rotating the receiving contact portion 3H and the regulating contact portion 4H that sandwich the workpiece P in a V shape. It rotates around a holding portion rotation shaft 5d provided at the tip of 2C.

  According to the cutting tool 10D having such a configuration, as will be understood from FIG. 14, when the cutting force of the cutting blade 1 acts on the material to be cut PN, the material to be cut P receives the receiving contact part 3H and the regulation contact part 4H. 1 and is firmly received and fixed to the material to be cut 5I and cut and fixed, so that the same effect as the cutting tool 10 of FIG. 1 can be exhibited.

  As can be seen from the cutting tools 10C and 10D in FIGS. 13 and 14, the core constituent elements of the cutting tool of the present invention are the portions where the receiving contact portion and the regulating contact portion are different from each other on the outer surface of the material to be cut. In this way, if the rotation is restricted by some method, the material to be cut can be suitably cut, or the material holding portion to be cut is changed from the open state to the cut state. The effect that the accommodation of a to-be-cut material can be made easy is exhibited.

<Embodiment 4>
FIG. 15 shows another example of the cutting tool of the present invention, in which (a) is a front view thereof and (b) is a side view thereof.

  This cutting tool 10E has a common point that the to-be-cut material holding part 5J rotates with respect to the receiving part 2D as compared with the cutting tool 10 of FIG. Unlike the arcuate guide portion 2a provided in the receiving portion 2, the outer periphery of the workpiece holding portion 5J is an arcuate portion 5e having the same arc shape and is rotatable. Yes.

  The receiving contact portion 3I and the restricting contact portion 4K provided on the workpiece holding portion 5J are the same as those in FIG. 1, and have a shape that surrounds the workpiece DW that is a two-row protective duct from three sides. Yes. Further, the restriction contact portion 4K includes a side wall restriction contact portion 4I along the side wall Dba of the workpiece DW and a top wall restriction contact portion 4J along the top wall Dbb.

  In addition, the workpiece holding portion 5J of the cutting tool 10E is a small workpiece holding member composed of a receiving contact portion 3L and a regulation contact portion 4L for receiving the workpiece DS that is a one-line protection duct. Part 5K. The small workpiece holding portion 5K is formed as a partial recess of the receiving contact portion 3I.

  The cutting tool 10I is provided with a stopper 2b on the receiving portion 2D as a rotation restricting means for restricting the rotation of the workpiece holding portion 5J that rotates with such a configuration. The stopper 2b comes into contact with the material to be cut DW held by the material to be cut holding portion 5J or the material to be cut DS held by the small material to be cut holding portion 5K, which is a part of the material to be cut. The rotation of the to-be-cut material holding portion 5J is restricted against the cutting force from the cutting.

  According to the cutting tool 10E having such a configuration, as will be understood from FIG. 15, when the cutting force of the cutting blade 1 acts on the workpiece DW, the workpiece DW receives the receiving contact portion 3I and the regulating contact portion 4K. 1 and is firmly received and fixed to the material to be cut holding portion 5J to be cut, so that the same effect as the cutting tool 10 of FIG. 1 can be exhibited.

  The cutting tool of the present invention is not limited to the above-described embodiment, and various modifications and combinations are possible within the scope described in the claims and the scope of the embodiment, and within the technical scope of the present invention. These modifications and combinations are also included.

  The cutting tool of the present invention can be used in an industrial field in which a material to be cut is firmly fixed at the time of cutting, and it is required to cut the material to be cut stably and reliably.

An example of the cutting tool of this invention is shown, (a) is the front view, (b) is the side view. (A) is a front view showing a state where the protective duct holding portion and the cutting blade of the protective duct cutting tool of FIG. 1 are opened to the maximum extent, and (b) is a wiring / piping to be cut by this protective duct cutting tool. Cross-sectional view showing an example of material protection duct 1 shows an aspect of cutting a material to be cut by the cutting tool of FIG. 1, (a) is a perspective view showing a state in which the material to be cut is set in an open material holding part, and (b) is a view of (a). The perspective view which shows before cutting and closing a to-be-cut material holding part from a state The front view which looked at the state of Drawing 3 (b) from the near side of a material to be cut The front view which shows the state which the cutting blade cut further into the to-be-cut material from the state of FIG. The front view which shows the state which the cutting blade further cut | disconnected about 1/3 in the to-be-cut material from the state of FIG. The front view which shows the state which the cutting blade cut | disconnected about 2/3 in the to-be-cut material further from the state of FIG. The front view which shows the state which the cutting | disconnection of the to-be-cut material by the cutting blade was completed (A) is an external perspective view showing a material to be cut by the cutting tool of FIG. 1, and (b) is a material to be cut by a cutting tool that does not include a pair of a receiving contact part and a regulation contact part. External perspective view showing (A) is an external perspective view showing a material to be cut that is smaller than the material to be cut shown in FIG. 3, and (b) is a front view showing a mode in which the material to be cut (a) is cut with the cutting tool of FIG. Figure The other example of the cutting tool of this invention is shown, (a) is a front view which shows the state which cut | disconnects one to-be-cut material with the cutting tool, (b) cuts another to-be-cut material with the same cutting tool. The front view which shows the state to do, (c) is a front view which shows the state which cut | disconnects another to-be-cut material with the same cutting tool. The other example of the cutting tool of this invention is shown, (a) is a front view which shows the state which cut | disconnects one to-be-cut material with the cutting tool, (b) cuts another to-be-cut material with the same cutting tool. The front view which shows the state to do, (c) is a front view which shows the state which cut | disconnects another to-be-cut material with the same cutting tool. The other example of the cutting tool of this invention is shown, (a) is the front view, (b) is the side view. The other example of the cutting tool of this invention is shown, (a) is the front view, (b) is the side view. The other example of the cutting tool of this invention is shown, (a) is the front view, (b) is the side view. The cutting tool used as the background art of this invention is illustrated, (a) is the front view, (b) is the top view which shows the place which looked at (a) from upper direction

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cutting blade 1a Blade axis 2-2D Receiving part 3-3I Receiving contact part 4-4K Restriction contact part 4A, 4I Side wall regulation contact part 4B, 4J Top wall regulation contact part 5-5J To-be-cut material holding part (Deformation prevention part)
5a to 5d Holding part rotating shaft 5e Arc part 6 Tool body 7 Operation part 10 to 10E Cutting tool DW to DW3 Material to be cut DS Material to be cut P, PS Material to be cut

Claims (7)

A cutting blade that rotates around the blade axis to cut the material to be cut, a receiving portion that receives the material to be cut, and a cutting operation of the cutting blade that is provided on the opposite side of the blade shaft with respect to the receiving portion A cutting tool provided with a tool body provided with an operation unit for
A receiving contact portion that receives the cutting force of the cutting blade acting on the material to be cut at a part of the outer surface of the material to be cut and a regulating contact portion that receives at another portion different from the part of the material to be cut. An object to be cut holding part integrated so as to rotate while maintaining an angle therebetween is provided rotatably on the receiving part,
At the time of cutting, the cutting force from the cutting blade acting on the material to be cut is applied to both the receiving contact portion and the regulating contact portion,
A cutting tool comprising a rotation restricting means for restricting rotation of the material to be cut by the cutting force. The workpiece holding portion further has an opening for receiving the workpiece from a direction perpendicular to the longitudinal axis direction of the workpiece at a position on the cutting blade side with respect to the receiving contact portion and the regulating contact portion. Prepared,
The receiving contact portion and the restriction contact portion are integrated so as to rotate while maintaining an angle between them while forming the opening,
The to-be-cut material holding part can be rotated from an open state in which the to-be-cut material is received without interfering with the cutting blade from the opening to a cut state for cutting the accommodated to-be-cut material. The cutting tool according to claim 1.   The cut material holding part includes a plurality of pairs of receiving contact parts and restriction contact parts corresponding to different cut materials, and each receiving and abutting different cut materials by rotating the cut material holding part. The cutting tool according to claim 1, wherein the cutting tool can be cut by a pair of a part and a regulating contact part.   The cutting tool according to any one of claims 1 to 3, wherein the receiving portion constitutes a rotation restricting means.   The cutting tool according to any one of claims 1 to 4, wherein the workpiece to be cut received by the workpiece holding portion constitutes a rotation restricting means.   The receiving contact portion or / and the restricting contact portion is characterized in that the material to be cut received at the receiving contact portion at the time of cutting is prevented from being deformed by receiving a cutting force by a cutting blade. The cutting tool according to any one of claims 1 to 5.   The receiving contact portion or / and the restricting contact portion is a deformation preventing portion having a shape along a shape before deformation of a portion where the material to be cut is deformed at the time of cutting. Any cutting tool.

Images