JP2014151061A - Cutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cutter capable of easily and more surely coping even with cutting of a plurality of kinds of cutting objects having different thicknesses and outer diameters.SOLUTION: A cutter 1 comprises: a blade body 2 for cutting a cutting object; a cutter body 3 for holding the blade body 2; and cutting-in depth adjustment means for adjusting a cutting-in depth into the cutting object by the blade body 2. The cutting-in depth adjustment means includes: an abutting member 10 provided movably in a direaction substantially parallel to a cutting-in depth direction with regard to the cutter body 3; and fixing means 11 for fixing the abutting member 10 to the cutter body 3 in a desired position along a moving direction. The cutter limits the cutting-in depth into the cutting object by the blade body 2 by causing the abutting member 10 to abut on an outer surface of the cutting object when the blade body 2 cuts into the cutting object.

Description

  The present invention relates to a cutter provided with a blade for cutting an object to be cut, and more particularly to a cutter capable of adjusting a cutting depth of the blade into the object to be cut.

  In order to cut the coating material wound around the pipe body without damaging the pipe body, the cutting depth of the blade body into the coating material can be adjusted according to the thickness of the coating material A cutter configured in (1) is described in Patent Document 1.

Japanese Patent Laid-Open No. 2006-210

  In the cutter of patent document 1, when adjusting the cutting depth to the coating | covering material of a blade body, the protrusion amount from the cutter main body of a blade body is adjusted. Accordingly, when cutting a plurality of types of pipe covering materials having different thicknesses and outer diameters with this cutter, it is necessary to release or re-fix the blade body each time. Therefore, there is a possibility that the mounting accuracy of the blade body and the certainty of fixing are lowered.

  An object of this invention is to provide the cutter which can respond | correspond easily and more reliably also about the cutting | disconnection of the multiple types of to-be-cut object from which thickness and an outer diameter differ.

  The cutter of the present invention includes a blade body for cutting an object to be cut, a cutter body that holds the blade body, and a cutting depth adjusting means for adjusting the cutting depth of the blade body into the workpiece. The cutting depth adjusting means includes a contact member provided to be movable in a direction substantially parallel to the cutting depth direction with respect to the cutter body, and a desired contact member in the moving direction. Fixing means for fixing to the cutter body at a position, and when the blade body is cut into the workpiece, the corresponding contact member comes into contact with the outer surface of the workpiece, The cutting depth of the blade body into the workpiece is configured to be regulated. According to this configuration, in order to adjust the cutting depth of the blade body, it is not necessary to adjust the protrusion amount of the blade body itself from the cutter body as in Patent Document 1. That is, even when dealing with a plurality of types of workpieces having different thicknesses and outer diameters, it is not necessary to release or re-fix the blade body in order to adjust the cutting depth. Thereby, it is possible to fix the blade body to the cutter body more reliably and accurately. As a result, the object to be cut can be cut with higher accuracy.

  The contact surface of the contact member with the object to be cut may have a planar shape extending in a direction substantially orthogonal to the cut depth direction. In such a configuration, the contact surface of the contact member does not have a shape corresponding only to a specific object to be cut, and thus it can be widely used for various objects having different thicknesses and outer diameters. .

  The surface of the cutter body facing the object to be cut is provided with a recess into which at least a part of the object to be cut enters, and the blade body is disposed so that the cutting edge is exposed in the recess. Also good. In such a configuration, when cutting the workpiece, the cutting edge is cut into the workpiece while the workpiece enters the recess of the cutter body. Thereby, since it can cut | disconnect in the state which hold | maintained the to-be-cut | disconnected object in the recess, the cutting | disconnection operation | work of a to-be-cut | disconnected object can be performed easily.

  The blade body is arranged so that the blade edge crosses the inside of the recess in a direction substantially orthogonal to the cutting depth direction, and both end sides of the blade body in the direction substantially perpendicular to the cutting depth direction are outside the recess. In, it may be fixed to the cutter body. In such a configuration, for example, when cutting a plurality of types of workpieces having different thicknesses and outer diameters, even when the contact position of the workpiece with respect to the blade differs depending on the workpiece, the position of the blade is changed. Without adjustment, the blade body can be cut into the object to be cut at a predetermined cutting depth. As a result, it is possible to deal with a wide range and with high accuracy in cutting various workpieces having different thicknesses and outer diameters.

  A cross-sectional shape of the recess along both the cutting depth direction and the extending direction of the cutting edge may be a substantially arc shape. With such a configuration, various workpieces having different thicknesses and outer diameters can be widely received in the recesses and cut.

  The cutter may further include a regulating unit that regulates movement of the workpiece in the recess in a direction substantially parallel to the extending direction of the cutting edge. In such a configuration, useless movement of the workpiece in the recess is suppressed, and the workpiece can be cut more easily and accurately.

  The restricting means includes an advancing / retracting member capable of advancing / retracting from the outside of the recess toward the inside of the recess in a direction substantially parallel to the extending direction of the cutting edge, and the advancing / retreating member at the desired position in the advancing / retreating direction. A fixing means for fixing, and the advancement / retraction member may advance into the recess so that the movement of the object to be cut in the recess is restricted. In this restricting means, the position of the advancing / retreating member can be adjusted in accordance with the thickness and outer diameter of the workpiece, so that it can handle a wide variety of workpieces with different thicknesses and outer diameters with high accuracy. Is possible.

  ADVANTAGE OF THE INVENTION According to this invention, the cutter which can respond | correspond easily and more reliably also to the cutting | disconnection of the multiple types of to-be-cut object from which thickness and an outer diameter differ can be provided.

  In the present invention, the term “abbreviated” means that some errors are allowed. For example, the cutting depth direction and the substantially parallel direction indicate that they may be slightly obliquely crossed with respect to the strict cutting depth direction (for example, about 0 to 5 ° with respect to the cutting depth direction). Similarly, the cutting depth direction and the substantially orthogonal direction are slightly crossed with respect to the direction orthogonal to the strict cutting depth direction (for example, about 0 to 5 ° with respect to the direction orthogonal to the cutting depth direction). Indicates that it may be.

It is a perspective view of the cutter concerning a 1st embodiment. It is the perspective view which looked at the cutter which concerns on 1st Embodiment from the opposite side to FIG. It is a disassembled perspective view of the cutter which concerns on 1st Embodiment. 4 and 5 are explanatory views of a method of using the cutter according to the first embodiment, and FIG. 6 is a side view of the cutter according to the second embodiment. FIG. 7 is a side view of the cutter according to the second embodiment viewed from the opposite side to FIG. 6, and FIGS. 8 and 9 are perspective views of the cutter according to the third embodiment.

  Embodiments will be described below with reference to the drawings. In the following embodiments, the cutter of the present invention is used to cut the heat insulating material of the pipe with the heat insulating material formed by winding the heat insulating material around the outer peripheral surface of the pipe body. The use of is not limited to this.

[First Embodiment]
1 and 2 are perspective views of the cutter according to the first embodiment, respectively. FIG. 2 shows the cutter as viewed from the opposite side to FIG. FIG. 3 is an exploded perspective view of the cutter. FIG. 4 and FIG. 5 are explanatory diagrams of how to use this cutter, respectively. 4 and 5 are both examples in which the cutter of the present invention is used to cut the heat insulating material of the pipe with the heat insulating material formed by winding the heat insulating material around the outer peripheral surface of the pipe body. Show. FIG. 4 shows a case where the thickness of the heat insulating material is relatively large, and FIG. 5 shows a case where the thickness of the heat insulating material is relatively small.

The cutter 1 includes a blade body 2 for cutting an object to be cut, a cutter body 3 holding the blade body 2, and a cutting depth direction of the blade body 2 into the object to be cut with respect to the cutter body 3. a contact member 10 which is movable (arrow a ₁ direction in FIG. 4) substantially parallel, as a fixing means for fixing the abutting member 10 to the cutter body 3 at a desired position in the movement direction thereof When the blade body 2 is cut into the object to be cut, the contact member 10 comes into contact with the outer surface of the object to be cut, so that the blade body 2 is cut into the object to be cut. The depth is regulated.

  That is, in the present invention, there is a cutting depth adjusting means for adjusting the cutting depth of the blade body 2 into the workpiece by the corresponding contact member 10 and its fixing means (bolt 11 in this embodiment). It is configured. The fixing means for the contact member 10 is not limited to the bolt 11.

  In this embodiment, a recess 4 into which at least a part of the object to be cut enters is provided on the surface of the cutter body 3 facing the object to be cut, and the blade body 2 is as shown in FIGS. The cutting edge 2a is disposed so as to be exposed in the recess 4. Hereinafter, for convenience, the opposite surface side (the workpiece side) is referred to as the lower side, and the opposite side (the anti-cut object side) is referred to as the upper side, both the cutting depth direction and the extending direction of the blade edge 2a. The orthogonal direction is sometimes referred to as the front and back direction.

  In this embodiment, the cross-sectional shape of the recess 4 along both the cutting depth direction and the extending direction of the cutting edge 2a is a substantially arc shape such as a semicircular shape or a semielliptical shape. In this embodiment, as shown in FIGS. 1 and 2, the recess 4 is open to both front and back sides of the cutter body 3, and the shape and size are substantially constant from the front side to the back side of the cutter body 3. It has become. In addition, the structure of the recess 4 is not limited to this.

  As shown in FIG. 3, in this embodiment, the blade body 2 has a thin and long strip-like shape, and one longitudinal edge portion thereof is a blade edge 2a. The edge in the longitudinal direction of the blade body 2 extends substantially in a straight line, and is bladed over its entire length. In addition, the structure of the blade body 2 is not limited to this. This blade body 2 is arranged so that the cutting edge 2a faces downward, and extends in the recess 4 so as to extend in a direction substantially orthogonal to the cutting depth direction, and its longitudinal direction (= cutting depth direction). The both ends of the substantially orthogonal direction are fixed to the cutter body 3 outside the recess 4. Reference numeral 2b in FIG. 4 indicates a fixing tool such as a screw in which both end sides in the longitudinal direction of the blade body 2 are fixed to the cutter body 3 respectively.

  That is, in this cutter 1, after the blade body 2 is attached to the cutter body 3, the exposure amount of the blade body 2 itself into the recess 4 (the distance from the inner surface of the recess 4 to the blade edge 2a) is set. The depth of cut is not adjusted to adjust.

  In this embodiment, the cutter body 3 includes a pair of sandwiching members 3 a and 3 b disposed on the front side and the back side of the blade body 2. As shown in FIG. 3, the blade body 2 is disposed between the sandwiching members 3a and 3b so that the blade edge 2a traverses the inside of the recess 4, and both ends in the longitudinal direction thereof are at least of the sandwiching members 3a and 3b, respectively. On the other hand, it is fixed by a fixing tool 2b. The sandwiching members 3a and 3b are connected and fixed to each other by a fixing tool 3c (FIGS. 1 and 2) such as a screw with the blade body 2 sandwiched therebetween. In addition, the structure of the cutter main body 3 and the fixing method to the cutter main body 3 of the blade body 2 are not limited to this.

  In this embodiment, the abutting member 10 is disposed along one side of the cutter body 3 in the front and back direction (hereinafter, this side is referred to as the front side). In this embodiment, the contact member 10 is provided with a guide groove 12 that penetrates the contact member 10 in the front and back direction and extends in a direction substantially parallel to the cut depth direction. In this embodiment, a pair of guide grooves 12 are provided at intervals in the extending direction of the blade edge 2a. Bolts 11 are screwed into the cutter body 3 through the guide grooves 12. By loosening each bolt 11, the contact member 10 can slide along the front side surface of the cutter body 3. At that time, the contact member 10 is guided by the bolts 11 and the guide grooves 12 and moves in a direction substantially parallel to the cut depth direction. By tightening each bolt 11, the contact member 10 is fixed to the cutter body 3.

  In addition, the guide mechanism of the contact member 10 is not limited to this. For example, a convex portion is provided on one of the cutter body 3 and the abutting member 10, and a concave groove extending in a direction substantially parallel to the cutting depth direction is provided on the other side. You may comprise so that the movement of the contact member 10 may be guided by a convex part sliding along a ditch | groove.

  Each bolt 11 may be tightened manually by an operator or may be tightened using a tool.

  In this embodiment, the lower surface 10a of the contact member 10 has a planar shape extending in a direction substantially orthogonal to the cut depth direction. In this embodiment, the contact member 10 has a substantially rectangular flat plate shape as shown in FIG. 1 and the like, and is arranged so that one end surface thereof is the lower surface 10a.

  The contact member 10 is preferably configured such that when the contact member 10 moves to the upper movement limit, the lower surface 10a is positioned at the same level as or the upper side of the innermost part of the recess 4. The position of the lower surface 10a of the contact member 10 when the contact member 10 is moved to the lower movement limit is not particularly limited, but may be located at the same level as or slightly below the lower end of the blade edge 2a. preferable. In this case, the contact member 10 covers the blade edge 2a, and safety is improved.

The width W ₃ (FIG. 4) of the lower surface 10a of the contact member 10 in the extending direction of the blade edge 2a is the blade length W ₂ of the blade edge 2a exposed in the recess 4 or the width of the lower end of the recess 4 preferably greater than W _1, and the contact member 10 is preferably both ends in the extending direction of the cutting edge 2a is arranged to always overlap the front surface of each side of the cutter body 3 recess 4 .

  In addition, the structure and arrangement | positioning of the contact member 10 are not limited to this.

In this embodiment, the cutter 1 further includes a restricting means for restricting movement of the object to be cut in the recess 4 in a direction substantially parallel to the extending direction of the cutting edge 2a. In this embodiment, the regulating means of arrow A ₂ direction in the extending direction substantially parallel (Figure 4 of the blade destination 2a so as to cover the cutting edge 2a toward the recess 4 outside recess 4 ), And a bolt 21 as a fixing means for fixing the advance / retreat member 20 to the cutter body 3 at a desired position in the advance / retreat direction. By advancing into the recess 4, the movement of the object to be cut in the recess 4 in the direction substantially parallel to the extending direction of the cutting edge 2 a is restricted.

  In this embodiment, the advance / retreat member 20 is arranged along the back side surface of the cutter body 3. The advancing / retracting member 20 is arranged with its lower end aligned with the lower surface of the cutter body 3 outside the recess 4. In this embodiment, the advance / retreat member 20 is provided with a guide groove 22 that penetrates the advance / retreat member 20 in the front and back direction and extends in a direction substantially parallel to the extending direction of the cutting edge 2a. Bolts 21 are screwed into the cutter body 3 through 22. By loosening the bolt 21, the advance / retreat member 20 can slide along the back side surface of the cutter body 3. At that time, the advance / retreat member 20 is guided by the bolt 21 and the guide groove 22 and advances / retreats in a direction substantially parallel to the extending direction of the blade edge 2a. The advance / retreat member 20 is fixed to the cutter body 3 by tightening the bolt 21.

  In addition, the guide mechanism of the advance / retreat member 20 is not limited to this. For example, a convex portion is provided on one of the cutter body 3 and the advancing / retracting member 20, and a concave groove extending in a direction substantially parallel to the extending direction of the blade edge 2a is provided on the other side. The movement of the advancing / retracting member 20 may be guided by sliding the convex portion along the concave groove.

  The bolt 21 may be tightened by an operator by hand, or may be tightened using a tool.

  When the advancing / retracting member 20 is retracted to the retreat limit of the recess 4 to the outside, the end surface on the recess 4 side (hereinafter referred to as the front end surface) is flush with the inner surface of the recess 4. Alternatively, it is preferably configured to be located outside the recess 4 rather than the inner surface of the recess 4.

  In addition, the structure and arrangement | positioning of the advance / retreat member 20 are not limited to this.

  There is no restriction | limiting in particular in the constituent material of the cutter main body 3, the contact member 10, and the advance / retreat member 20, These can be comprised from various materials, such as a metal and a synthetic resin. A soft material may be provided on a surface that comes into contact with an object to be cut, such as the lower surface 10a of the contact member 10 or the tip surface of the advance / retreat member 20.

  Next, the usage method of the cutter 1 comprised in this way is demonstrated. Here, an example in which the cutter 1 is used to cut the heat insulating material 32 of the pipe 30 with the heat insulating material in which the heat insulating material 32 made of foamed polyurethane or the like is wound around the outer peripheral surface of the pipe body 31 is shown.

  First, each bolt 11 is loosened so that the distance D (FIG. 4) from the blade edge 2a to the lower surface 10a of the contact member 10 is substantially equal to the thickness T (FIG. 4) of the heat insulating material 32. Adjust the position of 10. At that time, in order to prevent the blade edge 2a from coming into strong contact with the pipe body 31 when the blade body 2 is cut into the heat insulating material 32, the distance D from the blade edge 2a to the lower surface 10a of the contact member 10 is slightly increased. It is preferable to make it smaller than the thickness T of the heat insulating material 32 (for example, about 1 to 3 mm). After positioning the contact member 10, each bolt 11 is tightened to fix the contact member 10 to the cutter body 3.

Further, from the outer diameter and thickness T of the heat insulating material 32, the minimum necessary for cutting the blade 2 into the heat insulating material 32 until the lower surface 10 a of the contact member 10 contacts the outer peripheral surface of the heat insulating material 32. The distance W ₄ (FIG. 4) between the front end surface of the advance / retreat member 20 and the inner surface of the recess 4 opposite to this is determined, and the bolt 21 is loosened to appropriately adjust the amount of advance of the advance / retreat member 20 into the recess 4. adjust. Thereafter, the bolt 21 is tightened to fix the advance / retreat member 20 to the cutter body 3.

  Thereafter, the pipe 30 with a heat insulating material is inserted into the recess 4 (in this embodiment, between the front end surface of the advance / retreat member 20 and the inner surface of the recess 4 facing this), and the lower surface of the contact member 10. The blade 2 is cut into the heat insulating material 32 until 10a contacts the outer peripheral surface of the heat insulating material 32. Next, with the lower surface 10a of the contact member 10 in contact with the outer peripheral surface of the heat insulating material 32, the pipe 30 with the heat insulating material is rotated around its axis. Alternatively, the cutter 1 is rotated along the outer peripheral surface of the heat insulating material 32 while the lower surface 10 a of the contact member 10 is in contact with the outer peripheral surface of the heat insulating material 32.

  By doing in this way, the heat insulating material 32 is cut | disconnected by the substantially constant cutting depth over the perimeter.

  When the cutter 1 is used for cutting the heat insulating material having different thicknesses and outer diameters, the interval between the blade edge 2a and the lower surface 10a of the abutting member 10 and the recess of the advance / retreat member 20 are used in the same procedure as described above. 4. Change the amount of inward entry as appropriate.

  For example, the thickness T ′ and the outer diameter of the heat insulating material 32 ′ of the pipe 30 ′ with the heat insulating material of FIG. 5 are smaller than the thickness T and the outer diameter of the heat insulating material 32 of the pipe 30 with the heat insulating material of FIG. It has become a thing. After cutting the heat insulating material 32 of the pipe 30 with the heat insulating material of FIG. 4 and then cutting the heat insulating material 32 ′ of the pipe 30 ′ with the heat insulating material of FIG. 5, the bolt 11 is loosened and applied from the cutting edge 2 a. The contact member 10 is moved downward so that the distance to the lower surface 10a of the contact member 10 is substantially equal to the thickness T ′ of the heat insulating material 32 ′, and then the bolt 11 is tightened to contact the contact member. 10 is fixed to the cutter body 3. Further, the bolt 21 is loosened and the advance / retreat member 20 is appropriately advanced inward of the recess 4, and then the bolt 21 is tightened to fix the advance / retreat member 20 to the cutter body 3.

  The method for cutting the heat insulating material 32 'after the adjustment is the same as the method for cutting the heat insulating material 32 shown in FIG.

  As described above, in this cutter 1, the cutting depth adjusting means of the blade body 2 includes the contact member 10 provided so as to be movable with respect to the cutter body 3 in a direction substantially parallel to the cutting depth direction, and the corresponding contact member. Bolt 10 (fixing means) for fixing 10 to the cutter body 3 at a desired position in the moving direction, and when the blade body 2 is cut into the workpiece, the corresponding contact member 10 Is in contact with the outer surface of the workpiece, so that the cutting depth of the blade 2 into the workpiece is regulated.

  That is, in this cutter 1, in order to adjust the cutting depth of the blade body 2, the amount of protrusion of the blade body 2 itself from the cutter body 3 (the amount of exposure into the recess 4) as in Patent Document 1. ) No need to adjust. That is, even when dealing with a plurality of types of workpieces having different thicknesses and outer diameters, it is not necessary to release or re-fix the blade body 2 in order to adjust the cutting depth. Thereby, it is possible to fix the blade body 2 to the cutter body 3 more reliably and accurately. As a result, the object to be cut can be cut with higher accuracy.

  In this embodiment, the lower surface 10a of the contact member 10 (the contact surface with the object to be cut) has a planar shape extending in a direction substantially orthogonal to the cutting depth direction of the blade body 2. That is, the lower surface 10a of the contact member 10 does not have a shape corresponding to a specific object to be cut. Therefore, it can respond widely to various workpieces having different thicknesses and outer diameters.

  In this embodiment, the recess 4 is provided on the lower surface of the cutter body 3 (the surface facing the object to be cut), and the blade body 2 is disposed so that the blade edge 2a is exposed in the recess 4. When cutting the workpiece, the cutting edge 2a is cut into the workpiece while the workpiece is inserted into the recess 4. Thereby, since it can cut | disconnect in the state hold | maintained in the recess 4, the cutting | disconnection operation | work of a to-be-cut object can be performed easily.

  In this embodiment, the blade body 2 is disposed so that the blade edge 2a traverses the inside of the recess 4 in a direction substantially perpendicular to the cutting depth direction, and both end sides in the cutting depth direction and the substantially orthogonal direction are recessed. It is fixed to the cutter body 3 outside the place 4. Therefore, for example, when cutting a plurality of types of workpieces having different thicknesses and outer diameters, even when the contact position of the workpiece with respect to the blade body 2 varies depending on the workpiece, the position of the blade body 2 is not adjusted. The blade body 2 can be cut into the object to be cut at a predetermined cutting depth. As a result, it is possible to deal with a wide range and with high accuracy in cutting various workpieces having different thicknesses and outer diameters.

  In this embodiment, the cross-sectional shape along both the cutting depth direction of the recess 4 and the extending direction of the cutting edge 2a is a substantially arc shape. With such a configuration, various workpieces having different thicknesses and outer diameters can be widely received in the recesses 4 and cut.

  In this embodiment, the cutter 1 further includes a restricting means for restricting movement of the object to be cut in the recess 4 in a direction substantially parallel to the extending direction of the cutting edge 2a. Therefore, useless movement of the object to be cut in the recess 4 is suppressed, and the object to be cut can be cut more easily and accurately.

  In this embodiment, the restricting means includes an advancing / retracting member 20 capable of advancing / retreating from the outside of the recess 4 toward the inside of the recess 4 in a direction substantially parallel to the extending direction of the blade edge 2a, and the advancing / retreating member 20 And a bolt 21 (fixing means) for fixing to the cutter body 3 at a desired position in the direction, and the advancement / retraction member 20 advances into the recess 4 to be cut in the recess 4. It is comprised so that a movement of an object may be controlled. In this restricting means, by adjusting the position of the advancing / retreating member 20 in accordance with the thickness and outer diameter of the workpiece, it is possible to deal with various workpieces having different thicknesses and outer diameters widely and accurately. Is possible.

[Second Embodiment]
6 and 7 are side views of the cutter according to the second embodiment, respectively. 6 is a view of the cutter as viewed from the front side, and FIG. 7 is a view of the cutter as viewed from the back side.

  The cutter 1 ′ according to this embodiment is provided with a scale 41 indicating the distance between the blade edge 2 a and the lower surface 10 a of the contact member 10, and a scale 42 indicating the amount of advancement of the advance / retreat member 20 into the recess 4. It has become. In this embodiment, a scale 41 is provided on the front side surface of the cutter body 3 along the side of the contact member 10 in the cutting depth direction. A scale 42 is provided on the back side surface of the cutter body 3 along the upper side of the advance / retreat member 20 extending in a direction substantially parallel to the blade edge 2a. In addition, arrangement | positioning of the scales 41 and 42 is not limited to this. Further, the notches and numerical ranges of the scales 41 and 42 are not limited to those shown in FIGS.

  Other configurations of the cutter 1 'are the same as those of the cutter 1 according to the first embodiment. In FIGS. 6 and 7, the same reference numerals as those in FIGS. 1 to 5 denote the same parts.

  In the cutter 1 ′ thus configured, when adjusting the distance between the cutting edge 2 a and the lower surface 10 a of the contact member 10, and adjusting the amount of advancement of the advance / retreat member 20 into the recess 4. Can be adjusted so as to match the scales 41 and 42 provided on the cutter 1 ′ itself, so that these adjustments can be easily and accurately performed without using a separate ruler or the like. .

[Third Embodiment]
8 and 9 are perspective views of a cutter according to the third embodiment. FIG. 9 is a view of the cutter as viewed from the side opposite to FIG.

  In the cutter 1A according to this embodiment, the restricting means (the advance / retreat member 20 and the bolt 21 (fixing means)) for restricting the movement of the workpiece 2a in the recess 4 in a direction substantially parallel to the extending direction of the cutting edge 2a is omitted. It has been made.

  The contact member 10A provided in the cutter 1A includes a front side piece 10b that overlaps the front side surface of the cutter body 3, a back side piece 10c that overlaps the back side surface of the cutter body 3, and the upper end portions of the front side piece 10b and the back side piece 10c. It has a substantially U-shaped cross section having a connecting piece 10d that connects the two. The lower surface 10a of the front-side piece 10b and the lower surface 10e of the back-side piece 10c are disposed at substantially the same level (a position where the distance from the blade edge 2a is substantially equal). In this embodiment, the front-side piece 10b is provided with a guide groove 12 that penetrates the front-side piece 10b in the front-back direction and extends in a direction substantially parallel to the cut depth direction. The front side piece 10b is fixed to the cutter body 3 with bolts 11.

  The configuration of the contact member 10A is not limited to this. For example, the guide groove 12 may be provided also in the back side piece 10 c, and the back side piece 10 c may be fixed to the cutter body 3 by the bolt 11 through the guide groove 12. The lower surface 10a of the front side piece 10b and the lower surface 10e of the back side piece 10c may not be at the same level. The level of the lower surface 10a of the front side piece 10b and the level of the lower surface 10e of the back side piece 10c may be individually adjustable.

  Other configurations of the cutter 1A are the same as those of the cutter 1 according to the first embodiment. In FIGS. 8 and 9, the same reference numerals as those in FIGS. 1 to 5 denote the same parts.

  The usage method of this cutter 1A is the same as that of the cutter 1 except that the operation of the advance / retreat member 20 and the bolt 21 is omitted.

  In this cutter 1A, when the blade body 2 is cut into an object to be cut, both the lower surface 10a of the front side piece 10b and the lower surface 10e of the back side piece 10c of the contact member 10A contact the outer surface of the object to be cut. Touch. That is, the front side piece 10b and the back side piece 10c come into contact with the workpiece on both the front and back sides of the blade body 2, respectively. The blade body 2 can be cut into the workpiece more accurately at a predetermined cutting depth or cutting angle.

  Moreover, since the blade body 2 can be covered from both the front and back sides by the front side piece 10b and the back side piece 10c of the contact member 10A, safety during operation or transportation of the cutter 1A can be ensured.

  Each of the above embodiments is an example of the present invention, and the present invention may have a configuration other than that illustrated.

For example, in the first and second embodiments described above, as a restricting means for restricting movement of the workpiece 2a in the recess 4 in a direction substantially parallel to the extending direction of the cutting edge 2a, the recess 4 is formed from the outside of the recess 4. An advancing / retracting member 20 capable of moving back and forth in the direction substantially parallel to the extending direction of the cutting edge 2a toward the inside of the place 4, and a bolt 21 (fixing) for fixing the advancing / retreating member 20 to the cutter body 3 at a desired position in the advancing / retreating direction However, the configuration of the restricting means is not limited to this. For instance, although not shown, a portion including a recess 4 of the cutter body 3, and flexible here in the extending direction of the cutting edge 2a, the width W ₁ itself recess 4 by the expansion and contraction of the cutter body 3 You may comprise so that it can be changed.

  In each of the above-described embodiments, the cutter body 3 has a two-piece structure including a pair of sandwiching members 3a and 3b that sandwich the blade body 2, but the configuration of the cutter body 3 is not limited to this. For example, the cutter body 3 may have a one-piece structure or a structure including three or more pieces. The blade body 2 may be attached to the side surface of the cutter body 3.

1, 1 ', 1A Cutter 2 Blade 2a Cutting edge 3 Cutter body 4 Recess 10, 10A Contact member 11 Bolt (fixing means)
20 Advancement / retraction member 21 Bolt (fixing means)
30, 30 'pipe with heat insulating material 31 pipe body 32, 32' heat insulating material 41, 42 scale

Claims (7)

A blade for cutting an object to be cut;
A cutter body holding the blade,
In a cutter provided with a cutting depth adjusting means for adjusting the cutting depth into the workpiece of the blade body,
The cutting depth adjusting means is
An abutting member provided to be movable in a direction substantially parallel to the cutting depth direction with respect to the cutter body;
Fixing means for fixing the contact member to the cutter body at a desired position in the moving direction;
When the blade body is cut into the object to be cut, the contact member comes into contact with the outer surface of the object to be cut, so that the cutting depth of the blade body into the object to be cut is regulated. A cutter characterized by   2. The cutter according to claim 1, wherein a contact surface of the contact member with the workpiece is a flat surface extending in a direction substantially orthogonal to the cut depth direction. In Claim 1 or 2, a concave portion into which at least a part of the object to be cut enters is provided on the surface of the cutter body facing the object to be cut.
The cutter is arranged such that the blade tip is exposed in the recess. In Claim 3, the blade body is arranged so that the blade edge crosses the inside of the recess in the direction substantially perpendicular to the cutting depth direction,
A cutter characterized in that both end sides of the blade body in a direction substantially perpendicular to the cutting depth direction are fixed to the cutter body outside the recess.   The cutter according to claim 3 or 4, wherein a cross-sectional shape of the recess along both the cutting depth direction and the extending direction of the cutting edge is a substantially arc shape.   6. The cutter according to any one of claims 3 to 5, further comprising a regulating means for regulating movement of the object to be cut in the recess in a direction substantially parallel to the extending direction of the cutting edge. Cutter. In Claim 6, the restricting means is an advancing and retracting member that can advance and retract in a direction substantially parallel to the extending direction of the blade edge from the outside of the recess toward the inside of the recess
A fixing means for fixing the advance / retreat member to the cutter body at a desired position in the advance / retreat direction;
A cutter configured to restrict movement of an object to be cut in the recess when the advance / retreat member advances into the recess.

Images