JP2018171661A - Auxiliary jig - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable cutting of pipe material of various diameters at an angle orthogonal to the axial direction even if an operator is not skilled, with a simple and inexpensive configuration.SOLUTION: A disclosed auxiliary jig 1 comprises a body part 11 which is formed by successive connection of a first skirt part 11a, a first erection part 11b, a peak part 11c, a second erection part 11d and a second skirt part 11e and in which adjacent parts are integrally structured at a substantially right angle, a movable part 12 which is formed by successive connection of a skirt part 12a, an erection part 12b and a peak part 12c and in which adjacent parts are integrally structured at a substantially right angle, an adjustment part 13 for allowing an upper surface of the skirt part 12a to abut on an undersurface of the first skirt part 11a, allowing an upper surface of the peak part 12c to abut on an undersurface of the peak part 11c and fixing the movable part 12 to the body part 11 so that a distance between an inner surface of the erection part 12b and an inner surface of the second erection part 11d can be adjusted, and a plurality of holes (fixing parts) for fixing a cutter to the peak part 11c.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an auxiliary jig suitable for use in cutting a metal or synthetic resin tube material with a cutting machine at an angle orthogonal to the axial direction.

  Conventionally, cutting machines that cut a pipe material at an angle orthogonal to the axial direction include, for example, the following. A first conventional example is a cutting machine in which a first bearing provided at one end of a crank member is connected to a rotating shaft of an electric disk cutter, to which a rotating blade for cutting perpendicular to the axial direction of a pipe is attached. It is. In this cutting machine, a positioning member having a mountain-shaped cross section that is brought into contact with the outer circumferential surface of the pipe material by a gripping grip is pivotally supported by a second bearing provided at the other end of the crank member in parallel with the first bearing. (For example, refer to Patent Document 1).

  The second conventional example is a cutting machine that includes a main body having an electric motor on a base, connects a rotary blade to the electric motor, and exposes a part of the rotary blade to the lower portion of the base. In this cutting machine, the base is divided into a front base and a rear base in the vicinity of the rotary blade axis. The front base is integrated with the main body portion, and is pivotally attached to the rear base at the divided portion. The rear base can be bent and swung in a dogleg shape, and can be fixed to the main body in an arbitrary posture. Two rollers are disposed on each of the front and rear ends of the base, and a toe-in is formed on the front roller (see, for example, Patent Document 2).

  In the third conventional example, a circular saw cutting portion and a pipe clamp that wraps substantially the entire pipe material peripheral surface and is movably attached by a roller in the pipe material circumferential direction are integrally configured (for example, non-patent document). 1 and 2).

Japanese Patent No. 4646588 (Claim 1) Japanese Utility Model Publication 3-33384 (Scope of Claim for Utility Model Registration) “Asada General Catalog 2016”, “Beaver SAW Series”, p30-p32, April 2016, [online], Asada Corporation HP, [Search on March 21, 2017], Internet <http: // www .asada.co.jp / e_catalog_2016 / index_h5.html> "Owner's manual for round saw pipe cutting machine Beaver SAW280E / PE", [online], Asada Corporation HP, [March 21, 2017 search], Internet <http://www.asada.co.jp /support/manuals/item/saw280pe.pdf>

  In the first conventional example, the electric disk cutter can be compatible with a commercially available disk grinder (see paragraph 0019 of Patent Document 1). However, for that purpose, it is necessary to screw the screw shaft portion formed at the tip of the rotating shaft of the disc grinder to the female screw portion of the connecting shaft. However, if the screw shaft and female screw are not sufficiently screwed together, the positioning member will vibrate with the rotation of the disk grinder during operation, and the tube material cannot be cut with a high dimensional system. If the positioning member is detached from the shaft, the operator may be injured.

  In the first conventional example, the angled inclined surface of the positioning member is brought into contact with the radially outer peripheral surface of the pipe material. However, when the rotary blade cuts the pipe material, both the pipe material and the cutting machine vibrate. Therefore, the operator needs to maintain the orthogonal relationship between the rotary blade and the axial direction of the pipe material while withstanding the vibration. .

  However, in the first conventional example, the operator needs to hold the grip grip 7 attached to the positioning member 1 with the left hand and the electric disc cutter 2 with the right hand (paragraph 0021 of Patent Document 1). Therefore, it is necessary to fix the pipe material completely so that it does not vibrate or to have other workers hold the pipe material. Furthermore, in the first conventional example, after completion of the cutting of the upper surface side of the tube material, it is necessary to rotate the tube material so as to place the uncut portion on the upper side and perform a cutting operation (see paragraph 0024 of Patent Document 1). .

  Therefore, in the first conventional example, work efficiency is not good, and when there are two workers, it is difficult to cut the tube material at an angle orthogonal to the axial direction unless the two people can breathe. Furthermore, the first conventional example is troublesome and tired because the operator must always work with the cutting machine floating.

  On the other hand, in the second conventional example, a fixed arm provided on the rear side of the rear base is configured to be fixed integrally with the cover with a butterfly bolt. However, when the rotary blade cuts the pipe material, both the pipe material and the cutting machine vibrate. Therefore, if the butterfly bolts are not fully tightened, the butterfly bolts loosen due to vibration, and the attitude of the base relative to the pipe material May change, and the pipe material may not be cut at an angle orthogonal to the axial direction. Furthermore, the connection between the fixed arm and the rear side of the rear base is always loaded when the rotary blade cuts the pipe, but if the connection between the fixed arm and the rear base rear side is insufficient, There is a possibility that the fixed arm may come off from the rear side of the rear base. In this case, not only can the tube material not be cut at an angle orthogonal to the axial direction, but the support of the main body is suddenly lost, and the operator is in a dangerous state such as swinging and releasing his hand from the handle.

  Furthermore, in the third conventional example, since the pipe clamp wraps almost the entire circumference of the pipe material, the diameter range of the pipe material that can be cut by one unit is limited. Therefore, in order to cut pipes with various diameters, it is necessary to prepare multiple cutting machines. However, the price of the cutting machine is the cheapest and exceeds 100,000 yen, so purchase multiple units. Costs money.

  In addition, as described in Non-Patent Document 2, in the third conventional example, the operator presses the pipe with the left foot and presses the cutting machine with the right hand forward in the circumferential direction of the pipe while reducing the diameter of the pipe. After cutting for 1/6 minute, it is necessary to loosen the left foot, return the cutting machine to the top of the pipe with the right hand, and repeat the work of rotating the pipe to the labor side with the left hand. Although the roller is attached to the pipe clamp, the weight of the main body of the cutting machine is about 10 kg, and the burden on the operator is too large for such a complicated work.

  This invention is made | formed in view of the situation mentioned above, makes an example of a subject to solve the above problems, and provides the auxiliary jig which can solve these subjects. For the purpose.

  In order to solve the above-mentioned problem, the invention described in claim 1 is an auxiliary jig used when a pipe is cut by a cutting machine at an angle orthogonal to the axial direction, and includes a first skirt and a first standing Body part, top part, second standing part and second hem part are connected in sequence, and the body part, the skirt part, the standing part and the top part, which are integrally configured with adjacent parts forming a substantially right angle Are sequentially connected, and adjacent portions are integrally formed substantially at right angles to each other, and the upper surface of the bottom portion of the movable portion is in contact with the lower surface of the first bottom portion of the main body portion, The top top surface of the movable part is in contact with the top bottom bottom surface of the main body part, and the distance between the inner side surface of the standing part of the movable part and the inner side surface of the second standing part of the main body part is adjustable. An adjustment part for fixing the movable part to the main body part, and for fixing the cutting machine to the top of the main body part. It is characterized in that it comprises a tough.

  According to a second aspect of the present invention, there is provided the cutting machine according to the first aspect, wherein a relief portion for avoiding interference with the fixed portion is formed at the top of the movable portion. It is characterized by being.

  Moreover, the cutting machine which concerns on invention of Claim 3 WHEREIN: The auxiliary | assistant jig | tool of Claim 1 or 2 WHEREIN: The boundary inner side of the said 1st skirt part and the said 1st standing part of the said main-body part, The said Chamfering is performed on the inner side of the boundary between the second standing part and the second skirt part of the main body part and the inner side of the boundary between the hem part and the standing part of the movable part. .

  According to the present invention, a pipe material having various diameters is cut at an angle orthogonal to the axial direction, that is, while maintaining straightness, even if an operator is not skilled in a simple and inexpensive configuration. The cutting start and cutting end can be matched. According to the present invention, the worker can work comfortably and safely without getting tired, and the work efficiency is good.

It is a front view which shows the structure of the auxiliary jig which concerns on Embodiment 1 of this invention. It is a top view which shows the structure of the auxiliary jig which concerns on Embodiment 1 of this invention. It is a front view which shows the structure of the movable part which comprises the auxiliary jig | tool shown in FIG. It is a top view which shows the structure of the movable part which comprises the auxiliary | assistant jig | tool shown in FIG. It is a right view which shows the structure of the movable part which comprises the auxiliary jig | tool shown in FIG. It is a front view which shows the state which moved the movable part of the auxiliary jig shown in FIG. It is a front view which shows an example of the structure of a commercially available cutting machine. It is a front view which shows the structure of the cutting machine to which the auxiliary jig shown in FIG. 1 was attached. It is a front view which shows the use condition of the cutting machine shown in FIG. It is a front view which shows the use condition of the cutting machine with which the auxiliary jig of the state which moved the movable part shown in FIG. 6 was attached. It is a partial expansion perspective view which shows the structure of the auxiliary jig which concerns on Embodiment 2 of this invention, (a) is a partial expansion perspective view of a movable part, (b) is a partial expansion perspective view of a main-body part.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
Embodiment 1 FIG.
FIG. 1 is a front view showing the structure of an auxiliary jig 1 according to Embodiment 1 of the present invention. FIG. 2 is a plan view showing the structure of the auxiliary jig 1 shown in FIG.

  The auxiliary jig 1 according to the first embodiment includes a main body part 11, a movable part 12, and an adjustment part 13. The main body 11 has a substantially bowl shape when viewed from the front. That is, the main body 11 includes a first skirt 11a, a first erected portion 11b, a top portion 11c, a second erected portion 11d, and a second skirt 11e. For example, the main body 11 is configured such that the angles formed by adjacent portions (for example, the first hem portion 11a and the first standing portion 11b) of the metal plate material having a substantially rectangular planar shape are substantially perpendicular. It is produced by sequentially bending.

  As shown in FIG. 2, a pair of long holes 11 f and 11 g are formed in the first skirt 11 a in the vicinity of both ends in the short direction, approximately parallel to the short direction. Among these, the shaft portion 21aa (see FIG. 1) of the bolt 21a is inserted into the elongated hole 11f together with the washer 22a, and the nut 24a (see FIG. 1) is inserted into the shaft portion 21aa into which the movable portion 12 and the washer 23a are sequentially inserted. The movable part 12 is fixed by screwing. On the other hand, the shaft portion 21ba (not shown) of the bolt 21b is inserted into the elongated hole 11g together with the washer 22b (see FIG. 2), and the nut 24b is inserted into the shaft portion 21ba into which the movable portion 12 and the washer 23b are sequentially inserted. The movable portion 12 is fixed by screwing (not shown).

  The bolts 21a and 21b, the washers 22a, 22b, 23a and 23b, and the nuts 24a and 24b described above constitute the adjustment unit 13. The adjustment unit 13 is movable with the upper surface of the bottom portion 12a of the movable portion 12 in contact with the lower surface of the first bottom portion 11a of the main body portion 11, and the upper surface of the top portion 12c of the movable portion 12 in contact with the lower surface of the top portion 11c of the main body portion 11. The movable part 12 is fixed to the main body part 11 so that the distance between the inner side surface of the standing part 12b of the part 12 and the inner side surface of the second standing part 11d of the main body part 11 can be adjusted.

  As shown in FIG. 2, a plurality of holes 11h are formed in the apex portion 11c at predetermined intervals in the longitudinal direction near both ends in the longitudinal direction. These holes 11h are used when a commercially available cutting machine 2 as shown in FIG. In other words, the base 32 is usually attached to the bottom surface of the main body 31 constituting the commercially available cutting machine 2, but the shape and structure of the main body 31 and the base 32 are not standardized due to the standards. In order to fix the auxiliary jig 1 at a place where there is no hindrance to the operation of the plurality of holes 11h, a plurality of holes 11h are formed.

  A plurality of holes are formed in the base 32, but when the holes do not correspond to any of the plurality of holes 11h, a plurality of holes are formed at the positions of the top portions 11c corresponding to the plurality of holes of the base 32. It is necessary to make holes in advance. On the other hand, in the case where no holes other than the holes fixed to the main body 31 are formed in the base 32, it is necessary to previously form holes in the position of the base 32 corresponding to any of the holes 11h. is there.

  FIG. 3 is a front view showing the structure of the movable part 12, FIG. 4 is a plan view showing the structure of the movable part 12, and FIG. 5 is a right side view showing the structure of the movable part 12. As for the movable part 12, the skirt part 12a, the standing part 12b, and the top part 12c are comprised integrally. For example, the movable portion 12 is formed by sequentially bending a metal plate having a substantially rectangular planar shape so that the angles formed by the adjacent portions (for example, the skirt portion 12a and the standing portion 12b) are substantially perpendicular. Have been made.

  As shown in FIG. 4, the skirt 12a has a pair of long holes 12d and 12e in the vicinity of both ends in the short direction and corresponding to the pair of long holes 11f and 11g shown in FIG. Each is drilled substantially parallel to the direction. As shown in FIGS. 4 and 5, a pair of escape holes 12f and 12g are formed in the apex portion 12c near the both ends in the short direction and corresponding to the plurality of holes 11h shown in FIG. It is installed. As shown in FIG. 5, these escape holes 12f and 12g are formed in the upper part of the standing portion 12b so as to be substantially U-shaped when viewed from the right side.

  The escape holes 12f and 12g are for avoiding interference between the movable part 12 and bolts, nuts, and the like that fix the auxiliary jig 1 to the commercially available cutting machine 2. Therefore, depending on the structure of the commercially available cutting machine 2, when any of the plurality of holes 11 h is used and the auxiliary jig 1 cannot be attached, it is necessary to drill a new hole in the top 11 c of the main body 11. In addition, it is necessary to make a clearance hole corresponding to a new hole in the movable portion 12 as well.

  FIG. 6 is a front view showing a state where the movable portion 12 of the auxiliary jig 1 shown in FIG. 1 is moved. When the diameter of the pipe material to be cut is smaller than the distance between the first standing part 11b and the second standing part 11d (there is play), the pipe material comes into contact with the lower surface of the top part 11c. In this case, since the auxiliary jig 1 to which the commercially available cutting machine 2 (see FIG. 7) is fixed cannot be stably placed on the pipe material, the pipe material is difficult to cut. Therefore, by moving the movable part 12 to the second standing part 11d side, the distance between the movable part 12 and the second standing part 11d is made smaller than the diameter of the pipe material to be cut. That is, the movable part 12 is configured to be slidable in the xx ′ direction of FIG.

  The maximum moving range of the movable portion 12 is preferably slightly closer to the first standing portion 11b side than the center of the top portion 11c. This is because when the maximum moving range of the movable portion 12 extends from the center of the top portion 11c to the second standing portion 11d side, the center of gravity of the entire apparatus including the cutting machine 2 and the auxiliary jig 1 is the first. This is because the entire apparatus cannot be stably placed on the pipe material because it is biased toward the two standing portions 11d.

  When the diameter of the pipe material to be cut is larger than the distance between the first standing portion 11b and the second standing portion 11d, the movable portion 12 is removed and only the main body portion 11 is attached to the cutting machine 2 for use. May be.

  In the main body 11, the boundary inner side 11j between the first skirt 11a and the first standing part 11b and the boundary inner side 11k between the second standing part 11d and the second skirt 11e are clearly shown in FIG. Although not shown in Fig. 1, it is chamfered. Similarly, in the movable portion 12, the boundary inner side 12h between the skirt portion 12a and the standing portion 12b is chamfered although not clearly shown in FIG. The chamfering is performed on the boundary inner side 11j, the boundary inner side 11k, and the boundary inner side 12h in this way because they are in contact with the pipe material, and the pipe material is cut smoothly.

  The material of the main body part 11 and the movable part 12 constituting the auxiliary jig 1 may be a metal such as iron, copper, or aluminum, and an alloy of these metals with other metals (for example, carbon steel, stainless steel, brass, Duralumin etc.) may also be used.

  FIG. 7 is a front view showing an example of the structure of a commercially available cutting machine 2. The cutting machine 2 is configured by fixing a base (surface plate) 32 to a main body 31. The main body 31 includes a motor (not shown), and a circular saw 33 is rotatably attached to a rotation shaft of the motor. Further, the main body 31 has a grip part 34 provided with a switch 35 for operating and stopping the motor. The base 32 is formed with an opening (not shown) for projecting substantially half of the circular saw 33 downward from the bottom surface. In addition, although the cover which covers a part of blade edge of the circular saw 33 which protruded below from the bottom face of the base 32 is attached to the main-body part 31 originally, since it is not directly related to this invention, it is not illustrated.

(1) Next, an example of how to use the auxiliary jig 1 having the above structure will be described with reference to FIGS. First, the operator adjusts the protruding amount (cut depth) of the circular saw 33 from the bottom surface of the base 32 according to the thickness of the tubular material and the distance from the bottom surface of the base 32 of the cutting machine 2 to the tubular material. Next, the worker fixes the auxiliary jig 1 to the cutting machine 2 as shown in FIG. That is, after mounting the cutting machine 2 on the top 11c of the auxiliary jig 1, among the plurality of holes 11h drilled in the top 11c, two or three holes drilled in the base 32 in advance A shaft portion of a bolt (not shown) is inserted into the two or three holes whose positions are the same together with a washer, and a nut is screwed into the shaft portion through which the washer is inserted. Furthermore, the operator draws a black line at the position of the peripheral surface to be cut of the pipe material 41 shown in FIG.

  Next, as shown in FIG. 9, the operator places the auxiliary jig 1 to which the cutting machine 2 is fixed on the left side of the peripheral surface to be cut of the pipe material 41 (the back side in FIG. 9). (2) A boundary inner side 11k between the standing part 11d and the second bottom part 11e and a boundary inner side 12h between the bottom part 12a and the standing part 12b of the movable part 12 are placed in contact with each other.

  Next, the operator confirms that the circular saw 33 is not touching the pipe material 41, turns on the switch 35, and waits until the rotation of the circular saw 33 rises and stabilizes. Next, the operator grips the grip portion 34 with the right hand, tilts the cutting machine 2 forward, and slowly advances forward so that the mark (for example, notch) provided on the front portion of the base 32 traces the black line. At the same time, the tube 41 is rotated forward with the left hand.

  At this time, in the auxiliary jig 1 to which the cutting machine 2 is fixed, the boundary inner side 11k of the main body part 11 and the boundary inner side 12h of the movable part 12 are parallel to the axial direction of the tube 41 over the entire short direction of the auxiliary jig 1. While moving in contact with the tube material 41, it moves in the cutting direction, that is, in the direction orthogonal to the axial direction of the tube material 41. Therefore, the operator can easily cut the tube material 41 in a direction perpendicular to the axial direction by simply pushing the cutting machine 2 forward at a constant speed. Furthermore, since the chamfering is performed on the boundary inner side 11k of the main body part 11 and the boundary inner side 12h of the movable part 12, the operator can smoothly cut the pipe material 41. As a result, even if the operator is not skilled in the cutting work, the cutting start and the cutting end of the pipe material 41 can be matched.

(2) Next, with respect to an example of cutting the pipe material 42 (see FIG. 10) having a diameter smaller than that of the pipe material 41 shown in FIG. 9 using the auxiliary jig 1 and the cutting machine 2, FIGS. Will be described with reference to FIG. First, the worker changes the auxiliary jig 1 from the state shown in FIG. 1 to the state shown in FIG. That is, the operator loosens the nuts 24a and 24b in the auxiliary jig 1 shown in FIG. 1, then moves the movable part 12 to the position shown in FIG. 6, and tightens the nuts 24a and 24b.

  Next, the operator adjusts the protruding amount (cut depth) of the circular saw 33 from the bottom surface of the base 32 according to the thickness of the tubular material 42 and the distance from the bottom surface of the base 32 of the cutting machine 2 to the tubular material 42. . Next, the worker fixes the auxiliary jig 1 to the cutting machine 2 by the same method as described in (1). Furthermore, the operator draws a black line at the position of the peripheral surface to be cut of the tube material 42 shown in FIG.

  Next, as shown in FIG. 10, the operator places the auxiliary jig 1 to which the cutting machine 2 is fixed on the left side of the circumferential surface of the pipe 42 (the back side in FIG. 10). (2) A boundary inner side 11k between the standing part 11d and the second bottom part 11e and a boundary inner side 12h between the bottom part 12a and the standing part 12b of the movable part 12 are placed in contact with each other. Since the subsequent work is the same as in the case of (1), the description thereof is omitted.

  According to the first embodiment described above, it is only necessary to fix the commercially available cutting machine 2 to the auxiliary jig 1. Therefore, unlike the first conventional example, since it is not necessary to attach the rotating shaft of a commercially available disc grinder to the connecting shaft of the positioning member, the pipe can be cut with a high dimensional system, and the positioning member can be attached to the disc grinder. The resulting injury to the operator can be prevented.

  Further, according to the first embodiment, the operator only needs to hold the grip portion 34 with the right hand, tilt the cutting machine 2 forward and slowly advance forward, and rotate the tube 41 forward with the left hand. Therefore, unlike the first conventional example, there is no need to completely fix the tube material or to have the operator hold the tube material, and the tube material is rotated and cut after completion of the cutting of the upper surface side of the tube material. It is not necessary to perform the cutting operation after placing the unoccupied part on the upper side.

  For this reason, according to the first embodiment, the working efficiency is better than that of the first conventional example, and the pipe material is cut at an angle orthogonal to the axial direction, even if not skilled, that is, straightness is improved. It can be cut while keeping, and the cutting start and cutting end can be matched. Further, according to the first embodiment, since the cutting machine 2 is mounted on the pipe material 41, the operator does not have to work with the cutting machine kept floating as in the first conventional example, and is tired. You can work comfortably without.

  Further, according to the first embodiment, the auxiliary jig 1 includes the boundary inner side 11k formed by the second standing portion 11d and the second skirt portion 11e of the main body portion 11 being substantially perpendicular, and movable. Only the boundary inner side 12h formed by making the standing portion 12b of the portion 12 and the top portion 12c form a substantially right angle hits the pipe material 41 in parallel with the axial direction of the pipe material 41 over the entire short direction of the auxiliary jig 1. It touches. That is, the weights of the auxiliary jig 1 and the cutting machine 2 are added to the pipe material 41 only through the boundary inner side 11k and the boundary inner side 12h.

  Therefore, even if the pipe material 41 vibrates during cutting of the pipe material 41, it vibrates only between the boundary inner side 11 k and the boundary inner side 12 h, that is, in a direction parallel to the axial direction of the pipe material 41. The movement in the oblique direction is regulated by the weights of the boundary inner side 11k and the boundary inner side 12h, and the auxiliary jig 1 and the cutting machine 2.

  On the other hand, in the first conventional example, since the positioning member has a cross-sectional mountain shape, the contact area between the positioning member and the pipe is not only wider than that of the first embodiment, but also the contact direction is dispersed. doing. That is, the weight of the cutting machine is distributed to the contact portion with the positioning member and added to the pipe material. Therefore, in the first conventional example, when the pipe material vibrates during the cutting of the pipe material, the movement of the pipe material in the axial direction and the oblique direction is less likely to be regulated as compared with the first embodiment. Skill is required to cut at an orthogonal angle.

  Further, according to the first embodiment, it is only necessary to fix the auxiliary jig 1 having a simple structure to the commercially available cutting machine 2. Therefore, as in the second conventional example, the tube material or the cutting machine vibrates and the butterfly bolt loosens, the base posture with respect to the tube material changes, or the fixed arm is detached from the rear side of the rear base. There is no possibility of being unable to cut at an angle orthogonal to the axial direction.

  In addition, according to the first embodiment, the auxiliary jig 1 to which the cutting machine 2 is fixed is such that the boundary inner side 11k of the main body 11 and the boundary inner side 12h of the movable part 12 are the entire short direction of the auxiliary jig 1. It moves in a direction perpendicular to the axial direction of the pipe 41 while contacting the pipe 41 in parallel with the axial direction of the pipe 41. That is, since the straightness of the cutting machine 2 is good, the operator easily cuts the tube material 41 without forming a toe-in on the roller provided in the front part of the cutting machine as in the second conventional example. be able to.

  Furthermore, according to the first embodiment, pipes having various diameters can be cut by moving and fixing the movable portion 12. Therefore, since it is not necessary to prepare a plurality of cutting machines as in the third conventional example, the minimum cost burden is sufficient.

  Moreover, according to this Embodiment 1, the operator can cut | disconnect the pipe material 41 in the direction orthogonal to the axial direction only by pushing the cutting machine 2 ahead with fixed speed. Therefore, the operator does not need to repeat a complicated operation using a cutting machine of about 10 kg as in the third conventional example, so the burden is small.

  As described above, the auxiliary jig 1 according to the first embodiment of the present invention has the configuration shown in FIGS. 1 to 5 that cannot be easily conceived from the first to third conventional examples and the configuration in which these are assembled. have. Therefore, the auxiliary jig 1 according to the first embodiment of the present invention can obtain the above-described effects that cannot be obtained from the gathering configuration.

Embodiment 2. FIG.
In the above-described first embodiment, the boundary inner side 11j between the first skirt portion 11a and the first standing portion 11b of the main body 11, the boundary inner side 11k between the second standing portion 11d and the second skirt portion 11e, and Although the example which chamfers the boundary inner side 12h of the skirt part 12a and the standing part 12b of the movable part 12 was shown, it is not limited to this.

  For example, the lubricant is applied to the boundary inner side 11j, the boundary inner side 11k, and the boundary inner side 12h, or the rollers 51 and 52 are attached to the movable part 12 and the rollers 53 and 54 are attached to the main body part 11 as shown in FIG. You may do it. As shown in FIG. 11, the number of rollers may be two, or may be one or three or more. In this case, the roller should be structured so as not to protrude as much as possible from the boundary inner side 11j, the boundary inner side 11k, and the boundary inner side 12h. If comprised in this way, while the specific effect similar to the said Embodiment 1 is acquired, a cutting | disconnection operation | work can be performed more smoothly and work efficiency improves.

Embodiment 3 FIG.
In the above-described first embodiment, the length in the longitudinal direction of the top portion 11c constituting the auxiliary jig 1 is the length in the longitudinal direction of the base 32 constituting the cutting machine 2 as shown in FIGS. However, the present invention is not limited to this. For example, when cutting a pipe material having a large diameter so that the tip of the circular saw 33 does not reach the pipe material even if the protrusion amount (cutting depth) of the circular saw 33 from the bottom surface of the base 32 is adjusted to the maximum. Further, an auxiliary jig whose longitudinal length at the top is longer than the longitudinal length of the base 32 may be separately prepared. If comprised in this way, while obtaining the peculiar effect similar to the said Embodiment 1, rather than purchasing separately the cutting machine itself which can cut | disconnect the pipe material which has a large diameter like a 3rd prior art example. Without cost, it is possible to cut from a polyethylene pipe having a diameter of about 100 mm to a steel drum having a diameter of 600 mm.

  As mentioned above, although each embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to these embodiments, and the design can be changed without departing from the gist of the present invention. And the like are included in the present invention.

  For example, in each of the embodiments described above, an example in which the movable portion 12 is simply fixed to the main body portion 11 by the adjusting portion 13 is shown, but the present invention is not limited to this. For example, a pair of convex portions are provided on one side and a pair of groove portions on the other side in parallel to the lateral direction of the first hem portion 11a of the main body portion 11 and the skirt portion 12a of the movable portion 12, and each convex portion is formed into a corresponding groove portion. The movable portion 12 is inserted and configured to be slidable in the xx ′ direction of FIG. In this case, after the convex portion protrudes from the surface opposite to the insertion side surface of the groove portion so that the movable portion 12 does not separate from the main body portion 11, it is folded back or attached with a retaining member. Further, a biasing means such as a coil spring is provided between the inside of the first standing part 11 b of the main body part 11 and the standing part 12 b of the movable part 12. According to this configuration, the distance between the boundary inner side 12h of the movable part 12 and the boundary inner side 11k of the main body part 11 can be adjusted according to the diameter of the pipe material to be cut without providing the adjustment part 13.

  Note that the convex portion, the groove portion, and the biasing means described above have the upper surface of the bottom portion 12a of the movable portion 12 in contact with the lower surface of the first bottom portion 11a of the main body portion 11, and the upper surface of the top portion 12c of the movable portion 12. Comes into contact with the lower surface of the top 11c of the main body 11, and the movable portion 12 can be adjusted to the main body 11 so that the distance between the inner surface of the standing portion 12b of the movable portion 12 and the inner surface of the second standing portion 11d of the main body 11 can be adjusted. In the point which is fixing, it is contained in the adjustment part in Claim 1.

  Moreover, in each above-mentioned embodiment, although the example which drills the several hole 11h for attaching the cutting machine 2 to the top 11c of the main-body part 11 was shown, it is not limited to this. For example, when the longitudinal direction both ends of the top part 11c provide the latching | locking part which latches the longitudinal direction both ends of the base 32 of the cutting machine 2, or when the base 32 is comprised with the magnetic body, the longitudinal direction of the top part 11c You may attach a magnet to both ends. Alternatively, a belt may be wound around the top 11c and the base 32. In addition, the latch part, the magnet, and the belt which were demonstrated above are contained in the fixing | fixed part in Claim 1 in the point which has fixed the cutting machine 2 to the top part 11c of the main-body part 11. FIG.

  Further, in each of the above-described embodiments, an example in which the pair of escape holes 12f and 12g are formed in the top portion 12c of the movable portion 12 is shown, but the present invention is not limited to this. Since it is necessary to avoid interference between the locking portion, the fixed portion such as the magnet and the belt, and the movable portion 12, the shape of the relief portion applied to the top portion 12c of the movable portion 12 needs to correspond to the shape of the fixed portion. is there. Therefore, in the escape portion in claim 2, not only the escape holes 12f and 12g but also various processes formed on the movable portion 12 to avoid interference with the above-described locking portions, fixed portions such as magnets and belts. Is also included.

  In addition, each of the above-described embodiments can divert each other's technology as long as there is no particular contradiction or problem in its purpose and configuration.

  DESCRIPTION OF SYMBOLS 1 ... Auxiliary jig, 2 ... Cutting machine, 11 ... Main-body part, 11a ... 1st skirt part, 11b ... 1st standing part, 11c ... Top part, 11d ... 2nd standing part, 11e ... 2nd skirt part , 11f ... long hole (fixed part), 11g ... long hole, 11h ... hole, 11j, 11k ... boundary inside, 12 ... movable part, 12a ... skirt part, 12b ... standing part, 12c ... top part, 12d, 12e ... long holes, 12f, 12g ... escape holes (relief parts), 12h ... inside the boundary, 13 ... adjusting parts, 21a, 21b ... bolts, 21aa, 21ba ... shaft parts, 22a, 22b, 23a, 23b ... washers, 24a, 24b ... Nut, 31 ... Body, 32 ... Base, 33 ... Circular saw, 34 ... Gripping part, 35 ... Switch, 41,42 ... Pipe material, 51-54 ... Roller

Claims (3)

Auxiliary jig used when cutting the pipe with a cutting machine at an angle orthogonal to the axial direction,
A first skirt, a first erection part, a top, a second erection part, and a second skirt part are sequentially connected, and adjacent parts form a substantially right angle and are configured integrally;
A skirt part, a standing part and a top part are sequentially connected, and adjacent parts form a substantially right angle with each other, and a movable part configured integrally.
The upper surface of the movable portion is in contact with the lower surface of the first hem portion of the main body portion, the upper surface of the top portion of the movable portion is in contact with the lower surface of the top portion of the main body portion, and the standing portion of the movable portion is An adjustment unit that fixes the movable unit to the main body so that the distance between the inner surface of the installation part and the inner surface of the second standing part of the main body can be adjusted;
An auxiliary jig, comprising: a fixing portion for fixing the cutting machine to the top of the main body portion. The auxiliary jig according to claim 1, wherein an escape portion for avoiding interference with the fixed portion is formed at the top of the movable portion. The boundary inner side between the first skirt part and the first standing part of the main body part, the boundary inner side between the second standing part and the second skirt part of the main body part, and the skirt part of the movable part The auxiliary jig according to claim 1, wherein chamfering is performed on the inner side of the boundary with the standing part.

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