JP2015145067A - Wood chip production instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wood chip production instrument capable of continuously producing wood chips in the same shape.SOLUTION: A wood chip production instrument 1 includes: a scraping part 50 disposed between a distal end fixing part 10 and a proximal end fixing part 20 for scraping an outer peripheral surface of a rod-like body 2; a rotation part 40 for rotating the distal end fixing part 10 and the proximal end fixing part 20 together; and a suction part 30 connected to the distal end fixing part 10 for attracting the rod-like body 2 to the distal end fixing part 10 through suction. The scraping part 50 includes an arcuate scraping blade 521a that is formed line-symmetrically to a rotation axis BC orthogonal to an axial center C of the rod-like body 2, and is rotated around the rotation axis in parallel with the axial center C. The scraping blade 521a is abutted to the outer peripheral surface of the rod-like body 2 rotated by the rotation part 40 while being rotated around the rotation axis BC, thereby producing wood chips 2a each having a spherical shape or hemi-spherical shapes in both ends in a first portion 2A of the rod-like body 2 and a second portion 2B positioned closer to a proximal end than the first portion 2A.

Description

  The present invention relates to a piece of wood production tool, and more particularly, to a piece of wood piece production tool that cuts a piece of wood from a wooden rod.

  Conventionally, a wooden ball, which is one of wooden pieces, has been used, for example, as a pillow material. Such wooden balls are formed by cutting a wooden piece formed into a cube into a spherical shape.

As such a piece of wood production tool, a large number of pieces of wood processed into a dice shape or cylindrical pieces of wood obtained by diving a tree branch into a grinding chamber provided on an inclined belt sander device A wooden ball manufacturing apparatus has been proposed in which a wooden ball is manufactured using an inclined belt sander device that is charged and polished until the surface is rounded or ground (see Patent Document 1).
According to the mounting tool disclosed in Patent Document 1, spherical or non-spherical (eg, oval, triangular pyramid, etc.) wooden balls can be made inexpensively from wooden pieces obtained by dicing dice-shaped wooden pieces or tree branches. Mass production is possible.

JP 2004-136633 A

  However, since the wooden ball manufacturing apparatus described in Patent Document 1 grinds a large number of dice-like pieces of wood together with an inclined belt sander device in a polishing chamber, There is a problem that becomes uneven.

  An object of this invention is to provide the wood piece production instrument which can produce the wood piece of the same shape continuously.

(1) A wood piece production tool for scraping wood pieces from a wooden rod,
A tip fixing portion into which the tip of the rod-like body is inserted;
A base end fixing portion for fixing the base end side of the rod-shaped body;
A cut-out portion that is disposed between the distal end fixing portion and the proximal end fixing portion, and that cuts the outer peripheral surface of the rod-shaped body;
A rotating portion that rotates the distal end fixing portion and the proximal end fixing portion together;
A suction part that is connected to the tip fixing part and attracts the tip of the rod-like body to the tip fixing part by suction; and
The shaving part is
An arc-shaped cutting blade formed symmetrically with respect to a rotation axis perpendicular to the axis of the rod-shaped body fixed to the distal end fixing portion and the base end fixing portion;
Rotate around a rotation axis parallel to the axis,
The cutting blade is in contact with the outer peripheral surface of the rod-shaped body rotated by the rotating portion while rotating around the rotation axis,
The scraper blade is brought into contact with the first part of the rod-like body and the second part located on the proximal side of the first part to produce a piece of wood having a spherical shape or a hemispherical shape at both ends. Wood piece production equipment to do.

According to the structure of (1), the wood piece production tool which cuts a wood piece from a wooden rod-shaped body is provided with the front-end | tip fixing | fixed part, the base end fixing | fixed part, the cutting-out part, the rotation part, and the suction part.
The distal end of the rod-shaped body is inserted into the distal end fixing portion.
The proximal end fixing portion fixes the proximal end side of the rod-shaped body.
The shaving portion is disposed between the distal end fixing portion and the proximal end fixing portion, and scrapes the outer peripheral surface of the rod-shaped body.
The rotating portion rotates both the distal end fixing portion and the proximal end fixing portion.
The suction part is connected to the tip fixing part, and attracts the tip of the rod-like body to the tip fixing part by suction.
The cut-out portion has an arc-shaped cut-off blade formed in line symmetry with respect to a rotation axis orthogonal to the axis of the rod-like body fixed to the distal end fixing portion and the base end fixing portion.
Further, the shaving portion rotates around a rotation axis parallel to the axis of the rod-shaped body.
The cutting blade abuts on the outer peripheral surface of the rod-shaped body that is rotated by the rotating portion while rotating around the rotation axis.
Then, the wood piece production tool has a spherical shape or a hemispherical shape at both ends by contacting the cutting blade to the first part of the rod-like body and the second part located on the proximal side from the first part. Produce pieces of wood that have.

Thereby, the wood piece production tool is operated as follows, and produces wood pieces having a spherical shape or a hemispherical shape at both ends.
The producer inserts the distal end of the wooden rod-like body into the distal end fixing portion, and fixes the proximal end side of the rod-like body by the proximal end fixing portion. And a producer attracts the front-end | tip fixed part to a front-end | tip fixing | fixed part with a suction part, and then rotates both a front-end | tip fixed part and a base end fixing | fixed part with a rotation part. Then, the rod-shaped body also rotates.
In this state, the producer rotates the machined blade while rotating the machined part around a rotation axis parallel to the axis of the rod-shaped body, and the rotating machined blade is used as the first part of the rod-shaped body. Make contact.
Thereby, a pair of hemispheres facing each other are formed in the first portion of the rod-shaped body.
Next, the user removes the hemisphere on the distal end side of the rod-shaped body from the pair of formed hemispheres, inserts the hemisphere on the proximal end side into the distal end fixing portion, The rotating cutting blade is brought into contact with the second portion located on the base end side from the portion.
Thereby, a pair of hemispheres facing each other is formed in the second portion of the rod-shaped body, and the hemisphere formed on the first portion and the hemisphere formed on the distal end side of the second portion have a spherical shape or Wood pieces with hemispherical shapes at both ends are produced.
Then, the producer removes the piece of wood produced this time and inserts the hemisphere on the proximal end side into the distal end fixing part in the same procedure to produce a piece of wood having the next spherical shape or hemispherical shape at both ends.

In this way, a piece of wood having a spherical shape or a hemispherical shape at both ends can be produced continuously from a rod-like body. In addition, a piece of wood having a spherical shape or a hemispherical shape at both ends was produced by bringing a rotating cutting blade into contact with the outer peripheral surface of the rod-like body fixed to the distal end fixing portion and the proximal end fixing portion. The shape of the wood pieces is the same.
Therefore, it is possible to provide a wood piece production tool that can continuously produce wood pieces of the same shape.

(2) The proximal end fixing portion is
An insertion part through which the rod-shaped body is inserted;
A first member to which the insertion portion is fixed;
A second member that rotates relative to the first member around the insertion portion;
The first member is formed in an elongated body, slidably moves in a radial direction centered on the insertion portion, and presses the rod-like body inserted through the insertion portion through the insertion portion, It has a holding part in which a groove crossing the radial direction is formed,
The second member is a long body that is in sliding contact with the groove, and has a guide portion in which a distance from one end to the center of the insertion portion is shorter than a distance from the other end to the center of the insertion portion. Wood chip production equipment described.

According to the configuration of (2), the proximal end fixing portion includes the insertion portion, the first member, and the second member.
The insertion part is inserted with a rod-shaped body.
As for the 1st member, the insertion part is being fixed.
The second member rotates relative to the first member around the insertion portion.
The first member has a pressing portion formed in a long body.
The pressing portion is slidably moved in the radial direction centered on the insertion portion, presses the rod-shaped body that passes through the insertion portion and is inserted into the insertion portion, and a groove that crosses the radial direction is formed.
The second member has a guide portion that is a long body that is in sliding contact with the groove of the first member.
In the guide portion, the distance from one end to the center of the insertion portion is shorter than the distance from the other end to the center of the insertion portion.

Thereby, a base end fixing | fixed part fixes or open | releases the rod-shaped body penetrated by the insertion part by the following operation | movement.
The producer inserts the rod-like body through the insertion portion of the proximal end fixing portion, and inserts the tip of the rod-like body into the distal end fixing portion.
Then, the producer rotates the second member relative to the first member. Then, the guide portion also rotates, and the holding portion having a groove with which the guide portion slides slides in a radial direction centering on the insertion portion.
For example, when the second member is rotated from one end side to the other end side of the guide portion, the position of the groove of the guide portion moves to the center side of the insertion portion as the second member rotates. Thereby, the front-end | tip of a holding | suppressing part contact | abuts to the rod-shaped body penetrated by the insertion part, and a rod-shaped body can be fixed to a base end fixing | fixed part by a pressing part.
On the other hand, when the second member is rotated in the direction from the other end side to the one end side of the guide portion, the position of the groove of the guide portion is in a direction away from the center of the insertion portion as the second member rotates. Moving. Thereby, the front-end | tip of a holding | suppressing part leaves | separates from the rod-shaped body inserted in the insertion part, and can open | release the rod-shaped body fixed to the base end fixing | fixed part by the pressing part.

Thus, the rod-shaped body can be fixed to or released from the base end fixing portion simply by rotating the second member relative to the first member.
Therefore, workability is improved, and pieces of wood having the same shape can be continuously produced efficiently.

(3) It further includes an arm portion formed of an elongated body, one end of which is connected to the rotating portion so as to be rotatable around the rotation core of the rotating portion, and the other end is connected to the tip fixing portion. The wood piece production apparatus as described in 1) or (2).
Thus, after forming a pair of hemispheres facing each other on the rod-shaped body, the tip fixing part into which the piece of wood forming the hemisphere was inserted was rotated by the arm part and fixed to the base end fixing part. By separating the wooden piece from the shaft of the rod-shaped body, the wooden piece can be easily removed from the tip fixing portion.
Therefore, workability is improved, and pieces of wood having the same shape can be continuously produced efficiently.

  ADVANTAGE OF THE INVENTION According to this invention, the wood piece production instrument which can produce the wood piece of the same shape continuously can be provided.

It is a top view of wood chip production instrument 1 concerning one embodiment of the present invention. It is a figure which shows the state which decomposed | disassembled the base end fixing | fixed part 20 which concerns on the said embodiment. (A) is the figure which looked at the 1st member 22 from the direction which faces the 2nd member 23. FIG. (B) is the figure which looked at the 2nd member 23 from the direction which faces the 1st member 22. FIG. It is a figure explaining operation | movement of the base end fixing | fixed part 20 which concerns on the said embodiment. It is a figure explaining the cut-out part 50 and the arm part 60 which concern on the said embodiment. 2 is a perspective view of a chuck 512 according to the embodiment. FIG. It is a figure explaining wood piece production instrument 1A concerning the modification of the embodiment. It is a figure explaining the procedure which produces the wooden piece 2a which has a spherical shape or hemispherical shape at both ends with the wooden piece production instrument 1 which concerns on the said embodiment.

The structure of the wood piece production instrument 1 which concerns on embodiment of this invention is demonstrated based on drawing.
FIG. 1 is a plan view of a piece of wood production tool 1 according to an embodiment of the present invention.
The wood piece production tool 1 includes a distal end fixing portion 10, a proximal end fixing portion 20, a suction portion 30, a rotating portion 40, a shaving portion 50, and an arm portion 60. Scrape off.

The tip fixing part 10 is formed in a columnar shape, an insertion hole 11 into which the tip of the rod-like body 2 is inserted is formed on one end side, and a suction part 30 is connected to the other end side.
The tip fixing portion 10 is formed of a sponge that is a porous material. However, if the tip of the rod-like body 2 inserted into the insertion hole 11 can be sucked by the suction portion 30, it is formed of any material such as rubber or resin. can do.

The proximal end fixing portion 20 includes an insertion portion 21, a first member 22 to which the insertion portion 21 is fixed, a second member 23 that rotates relative to the first member 22 around the insertion portion 21, and The base end side of the rod-shaped body 2 is fixed.
FIG. 2 is a diagram illustrating a state in which the proximal end fixing portion 20 according to the embodiment is disassembled.
FIG. 2A is a view of the first member 22 as viewed from the direction facing the second member 23.
FIG. 2B is a view of the second member 23 as viewed from the direction facing the first member 22.

  As shown in FIG. 2A, the insertion portion 21 is formed in a cylindrical body having an inner diameter slightly larger than the outer diameter of the rod-like body 2, and penetrates through the distal end of the pressing portion 222 of the first member 22 described later. A hole 211 is formed.

  The first member 22 is formed in a disk shape, and is disposed on a surface facing the first member main body 221 in which the insertion portion 21 penetrates and is fixed at the center thereof, and the second member 23 of the first member main body 221. The holding part 222, the holding part 223, the auxiliary member 224, and the fixing holding part 225 are provided.

The holding part 222 is formed in a long body, the center in the short side direction is arranged on a radial line RL extending in the radial direction from the center of the insertion part 21, and is slidably arranged on the radial line RL. .
The pressing portion 222 has a tip that penetrates the through-hole 211 of the insertion portion 21 and is sharply formed, and the rod-shaped body 2 inserted into the insertion portion 21 is pressed by this tip.
A groove 222a that crosses the radial direction line RL is formed in the intermediate portion of the pressing portion 222.
Moreover, the holding | suppressing part 222 is each arrange | positioned on the three radial direction lines RL arrange | positioned at intervals of 120 degree | times.
As described above, by arranging the three pressing portions 222 at intervals of 120 degrees, the rotation balance when the proximal end fixing portion 20 rotates is improved.
In addition, as long as the holding | suppressing part 222 can hold down the rod-shaped body 2 penetrated by the insertion part 21, it can be provided in arbitrary numbers, such as one, two, four.

  The grip portion 223 extends along one side edge in the long side direction of the pressing portion 222 and protrudes from the outer edge of the first member body 221. The gripper 223 is gripped by the producer, for example, when the second member 23 is rotated relative to the first member 22.

The auxiliary member 224 extends along the other side edge in the long side direction of the pressing portion 222.
Thereby, since the side edge of the long side direction is pinched | interposed by the holding | grip part 223 and the auxiliary member 224, it becomes possible to slide the holding | maintenance part 222 on the radial direction line RL, without shaking.

The fixing grip 225 is formed of a rod-like body, one end of which is rotatably connected to the vicinity of the outer edge of the first member main body 221, and the other end is connected to an elastic member 226 connected to the second member 23. Yes.
The elastic member 226 is formed of a spring member. However, the elastic member 226 is not limited to this and may be formed of an arbitrary material such as a rubber member or a string member as long as the second member 23 can be held in a state rotated in a predetermined direction. it can.

  As shown in FIG. 2B, the second member 23 is formed in a disc shape, and the second member main body 231 through which the insertion portion 21 penetrates at the center thereof, and the first member 22 of the second member main body 231. The guide part 232 and the holding part 233 which are arrange | positioned at the surface which faces are provided.

As shown by a dotted line in FIG. 2A, the guide part 232 is formed by a long body that is in sliding contact with the groove 222 a of the pressing part 222 of the first member 22.
As shown in FIG. 2B, in the guide part 232, the distance D <b> 1 from one end to the center C of the insertion part 21 is shorter than the distance D <b> 2 from the other end to the center C of the insertion part 21.
Three guide portions 232 are arranged at intervals of 120 degrees with the center C as the center.
Thus, by arranging three guide portions 232 at intervals of 120 degrees, the rotation balance when the proximal end fixing portion 20 rotates is improved.
In addition, the guide part 232 should just match | combine with the number of the press parts 222, and arbitrary numbers can be provided according to the number of the press parts 222. FIG.

Moreover, the guide part 232 is formed in the circular arc shape arrange | positioned on the spiral-shaped line centering on the center C and leaving | separating from the center C as it turns.
Thus, when the second member 23 is rotated relative to the first member 22, the guide portion 232 smoothly contacts the groove 222 a of the pressing portion 222 of the first member 22. That is, it becomes possible to smoothly slide the pressing portion 222.
The guide portion 232 is not limited to an arc shape, and may be formed linearly if the distance D1 is shorter than the distance D2.

The grip portion 233 is disposed at an angle different from the grip portion 223 of the first member 22 and protrudes from the outer edge of the second member main body 231. The gripping part 233 is gripped by the producer, for example, when the second member 23 is rotated relative to the first member 22, similarly to the gripping part 223.
Similarly to the guide portion 232, three grip portions 233 are arranged at intervals of 120 degrees with the center C as the center. The elastic member 226 of the first member 22 is connected to one of the three grip portions 233.

The operation of the proximal end fixing unit 20 will be described.
FIG. 3 is a view for explaining the operation of the proximal end fixing portion 20 according to the embodiment.
In FIG. 3, for the second member 23 (see FIG. 2B), the guide portion 232 is indicated by a dotted line, and other configurations are omitted.
The state shown in FIG. 3 is a state in which the rod-like body 2 is inserted through the insertion part 21 and the tip thereof is inserted into the tip fixing part 10 (see FIG. 1). In the state shown in FIG. 3, the groove 222 a of the pressing portion 222 is engaged with the guide portion 232 on the other end (position farthest from the center of the insertion portion 21). For this reason, the front-end | tip of the holding | suppressing part 222 is spaced apart from the outer periphery of the rod-shaped body 2 penetrated by the insertion part 21. FIG.

From the state shown in FIG. 3, the producer rotates the other end side of the gripping portion 225 for fixing toward the arrow A direction in FIG. 3 (the tip of the guide portion 232 (position closest to the center of the insertion portion 21)). As a result, the guide portion 232 of the second member 23 (see FIG. 2B) also rotates relative to the first member 22 toward the distal end side of the guide portion 232.
Then, the holding part 222 having the groove 222 a with which the guide part 232 comes into sliding contact slides toward the outer periphery of the rod-like body 2 in the radial direction centering on the insertion part 21. As a result, the state shown in FIG. 2A is obtained, and the distal end of the pressing portion 222 comes into contact with the outer periphery of the rod-shaped body 2 inserted through the insertion portion 21, and the rod-shaped body 2 is brought into contact with the proximal end fixing portion 20 by the pressing portion 222. Fixed.

On the other hand, when releasing the fixation of the rod-shaped body 2 by the base end fixing portion 20, the producer moves the other end side of the fixing grip portion 225 in the direction indicated by the arrow B in FIG. 2A (the other end of the guide portion 232). The guide member 232 of the second member 23 (see FIG. 2B) is also relatively moved with respect to the first member 22 (position farthest from the center of the insertion portion 21). It rotates to the other end side of the guide part 232.
Then, the holding part 222 having the groove 222 a with which the guide part 232 comes into sliding contact slides in a radial direction centering on the insertion part 21 in a direction away from the outer periphery of the rod-like body 2. As a result, the state shown in FIG. 3 is obtained, and the distal end of the pressing portion 222 is separated from the outer periphery of the rod-like body 2 inserted through the insertion portion 21, and the fixation of the rod-like body 2 by the proximal end fixing portion 20 is released.

  Returning to FIG. 1, the suction unit 30 is configured such that the suction port of a suction machine including an air pump, a motor, and the like is connected to the tip fixing unit 10, and the tip of the rod-shaped body 2 is moved by sucking air through the suction unit 30. It is attracted to the tip fixing part 10.

The rotation unit 40 includes a rotation shaft 41 parallel to the central axes of the distal end fixing unit 10 and the proximal end fixing unit 20, a rotation shaft 41, the distal end fixing unit 10, and a transmission member 42 wound around the proximal end fixing unit 20. The distal end fixing portion 10 and the proximal end fixing portion 20 are rotated together.
The rotating shaft 41 rotates manually or electrically.
The transmission member 42 is formed of a belt, but can be formed of an arbitrary material such as a string, a chain, or a wire as long as the rotational force of the rotation shaft 41 can be transmitted to the distal end fixing portion 10 and the proximal end fixing portion 20. .

FIG. 4 is a view for explaining the shaving portion 50 and the arm portion 60 according to the embodiment.
The shaving unit 50 includes a rotary tool 51 for cutting the rod-shaped body 2, and a support column 52 and a support unit 53 for rotating the rotary tool 51 around a rotation axis parallel to the axis of the rod-shaped body 2. Prepare.

The rotary tool 51 is provided at the distal end of the body 511 formed of an electric rotary tool and the body 511, is disposed between the distal end fixing portion 10 and the proximal end fixing portion 20, and is rotationally driven by the body 511 to be the rod-shaped body 2. A chuck 512 for cutting the outer peripheral surface of the chuck.
FIG. 5 is a perspective view of the chuck 512 according to the embodiment.
The chuck 512 is formed in line symmetry with respect to the rotation axis BC orthogonal to the axis C of the rod-like body 2 fixed to the distal end fixing portion 10 and the proximal end fixing portion 20, and swells in the direction of the rotation axis BC. A pair of cutting edges 512a having an arc shape are provided.
The shaving blade 512a can have any shape as long as it can form a hemisphere by cutting the outer peripheral surface of the rotating rod-like body 2.
In the present embodiment, the chuck 512 is configured with a cutting blade, but is not limited thereto, and may be configured with a polishing blade or a drill.

Returning to FIG. 4, the support column 52 is located in the vicinity of the side surface of the rotary tool 51 in the direction in which the central axis (axial center of the rod-shaped body 2) C of the distal end fixing unit 10 and the proximal end fixing unit 20 (see FIG. 1) extends. It has a top end 521 that stands upward and is disposed above the central axis C.
The top end 521 is formed with a shaft support portion 521a that rotatably supports the support portion 53. In the present embodiment, the shaft support 521a is formed with a notch, but a hardware may be provided.
Further, the support 52 may be provided with a protective plate that surrounds the rotary tool 51 and is formed of a permeable material. Thereby, it is possible to prevent the wood chips cut out by the rotary tool 51 from scattering without blocking the producer's view.

The support portion 53 includes a horizontal shaft portion 531 supported by the shaft support portion 521 a of the support column portion 52, an orthogonal portion 532 connected to the horizontal shaft portion 531 and extending in a direction orthogonal to the horizontal shaft portion 531, and the orthogonal portion 532. A rotary tool support 533 that is connected to the lower end and supports the rotary tool 51.
The orthogonal part 532 includes an adjustment mechanism that can adjust the connection position with the horizontal axis part 531. The rotary tool 51 supported by the rotary tool support 533 is adjusted by this adjustment mechanism so that the horizontal axis of the rotation axis of the chuck 512 is the same as the center axis C.
Further, the rotary tool 51 is fixed to the rotary tool support 533 so that the tip position when horizontal is arranged in the vicinity of the central axis C.

  With such a configuration, the producer rotates the rotary tool 51 in which the cutting blade 512a rotates while rotating the rod-shaped body 2 around the central axis C toward the rod-shaped body 2 around the horizontal shaft portion 531. (Turned from the position indicated by the dotted line in FIG. 4 to the position indicated by the solid line), and the cutting blade 512a (see FIG. 5) is brought into contact with the outer peripheral surface of the rod-shaped body 2, thereby causing the rod-shaped body 2 to contact the outer peripheral surface. Hemispheres facing each other are formed.

  The arm portion 60 is formed of a long body and a base end portion 61 that is pivotally connected around the rotation core of the rotation shaft 41 of the rotation portion 40, a tip end portion 62 that is fixed to the tip fixing portion 10. A connecting portion 63 having one end connected to the base end portion 61 and the other end connected to the tip end portion 62.

  With such a configuration, the producer forms a pair of hemispheres facing each other on the rod-like body 2, and then turns the tip fixing portion 10 into which the piece of wood 2 a forming the hemisphere is inserted by the arm portion 60. The wooden piece 2a is moved away from the axis of the rod-like body 2 fixed to the base end fixing portion 20 (see FIG. 1) by moving (moving from the position shown by the solid line in FIG. 4 to the position shown by the dotted line), and fixing the tip The piece of wood 2a is removed from the part 10.

Next, a piece of wood production tool 1A according to a modification of the present embodiment will be described. In the description of the wood piece production tool 1A according to the modified example, the description of the same configuration as that of the wood piece production tool 1 according to the present embodiment is omitted or simplified. The wood piece production tool 1A may be used as one mechanism of a machine tool such as a lathe or an NC lathe.
FIG. 6 is a diagram illustrating a piece of wood production tool 1A according to a modification of the embodiment.
The piece production tool 1A according to the modification of the present embodiment is different from the piece production instrument 1 according to the present embodiment in that the shaving portion 50A includes a guide portion 54 instead of the support portion 52 and the support portion 53. .
The machined part 50 </ b> A includes a rotary tool 51 and a guide part 54.
The guide portion 54 extends along a slide axis SL orthogonal to the direction in which the central axis (axial core of the rod-like body 2) C of the distal end fixing portion 10 and the proximal end fixing portion 20 extends.
The rotary tool 51 is slidably engaged with the guide portion 54, slides forward or backward along the slide axis SL, and approaches and separates from the outer peripheral surface of the rod-shaped body 2. More specifically, the rotary tool 51 slides forward with the cutting blade 512a rotating, approaches the outer peripheral surface of the rod-shaped body 2 that rotates about the central axis C, and moves the cutting blade 512a to the rod-shaped body 2. It is made to contact | abut on an outer peripheral surface (state shown with the dotted line in FIG. 6). Then, after the rotary tool 51 forms hemispheres facing each other on the outer peripheral surface of the rod-shaped body 2, the rotary tool 51 slides backward and is separated from the outer peripheral surface of the rod-shaped body 2 (state shown by a solid line in FIG. 6).
The cut-out portion 50A is limited to the guide portion 54 as long as the rotary tool 51 can be close to or separated from the outer peripheral surface of the rod-shaped body 2 along the slide axis SL. You may make it adjoin or space apart from the outer peripheral surface of the rod-shaped body 2.

Next, a procedure for producing a piece of wood 2a having a spherical shape or a hemispherical shape at both ends by the piece of wood production tool 1 according to the present embodiment will be described.
First, as shown in FIG. 1, the producer inserts the distal end of the wooden rod-like body 2 into the distal end fixing portion 10 and fixes the proximal end side of the rod-like body 2 by the proximal end fixing portion 20. Then, the producer pulls the distal end of the rod-like body 2 to the distal end fixing unit 10 by the suction unit 30, and then rotates both the distal end fixing unit 10 and the proximal end fixing unit 20 by the rotating unit 40. Then, the rod-shaped body 2 also rotates.

FIG. 7 is a diagram illustrating a procedure for producing a piece of wood 2a having a spherical shape or a hemispherical shape at both ends by the piece of wood production tool 1 according to the embodiment.
As shown in the upper part of FIG. 7, the producer contacts the rotating cutting blade 512 a with the first portion 2 </ b> A of the rod-like body 2 that is fixed and rotated to the distal end fixing portion 10 and the proximal end fixing portion 20. Hemispheres facing each other are formed on the outer peripheral surface of the rod-shaped body 2.
Next, the producer rotates the tip fixing portion 10 with the arm portion 60 (see FIG. 4), removes the wood piece 2 b on the tip fixing portion 10 side, and then attaches the tip fixing portion 10 to the rod-like body 2 again. Return to the axis, and the state shown in the middle stage of FIG. Thereafter, the producer inserts the tip formed in the hemisphere of the rod-like body 2 into the tip fixing portion 10.
Next, as shown in the lower part of FIG. 7, the producer fixes and rotates the rod-like body 2 to the distal end fixing portion 10 and the proximal end fixing portion 20, and the proximal end side from the first portion 2 </ b> A of the rod-like body 2. A scraping blade 512a is brought into contact with the second portion 2B located on the (base end fixing portion 20 side) to produce a piece of wood 2a having a spherical shape or a hemispherical shape at both ends.
Then, the producer removes the wood piece 2a produced this time, and inserts the hemisphere on the proximal end side into the distal end fixing portion 10 in the same procedure, and produces the wood piece 2a having the next spherical shape or hemispherical shape at both ends. .
In the present embodiment, the cutting blade 512a is brought into contact with the first portion 2A of the rod-like body 2 and then the cutting blade 512a is brought into contact with the second portion 2B of the rod-like body 2 so that the spherical shape or A piece of wood 2a having a hemispherical shape at both ends is produced. However, the present invention is not limited to this, and two rotating tools 51 are arranged, and these cutting blades 512a are simultaneously brought into contact with the first portion 2A and the second portion 2B of the rod-like body 2 to form a spherical shape or hemisphere at both ends. You may produce the piece 2a which has a shape.

According to the wood piece production instrument 1 according to the present embodiment, wood pieces 2a having a spherical shape or a hemispherical shape at both ends can be produced continuously from the rod-like body 2. In addition, a piece of wood 2a having a spherical shape or a hemispherical shape at both ends is produced by contacting the rotating cutting blade 512a to the outer peripheral surface of the rod-like body 2 fixed to the distal end fixing portion 10 and the proximal end fixing portion 20. Therefore, the shape of the produced piece 2a is the same.
Therefore, it is possible to provide the wood piece production tool 1 that can continuously produce the wood pieces 2a having the same shape.

In addition, according to the wood piece production instrument 1, the rod-like body 2 can be fixed to or released from the base end fixing portion 20 simply by rotating the second member 23 relative to the first member 22.
Therefore, workability is improved and wood pieces 2a having the same shape can be efficiently produced continuously.

Further, according to the wood piece production tool 1, after the pair of hemispheres facing each other are formed on the rod-like body 2, the arm portion 60 holds the tip fixing portion 10 into which the wood piece 2a having the hemisphere body is inserted. The wooden piece 2a can be easily removed from the distal end fixing portion 10 by rotating by the portion 60 and separating the wooden piece 2a from the shaft of the rod-like body 2 fixed to the proximal end fixing portion 20.
Therefore, workability is improved and wood pieces 2a having the same shape can be efficiently produced continuously.

  It should be noted that the present invention is not limited to the above-described embodiment, and modifications, improvements, etc. within a scope that can achieve the object of the present invention are included in the present invention.

DESCRIPTION OF SYMBOLS 1 Wood piece production tool 2 Rod-like body 2A 1st part 2B 2nd part 2a Wood piece 10 Tip fixed part 20 Base end fixed part 30 Suction part 40 Rotating part 50 Machined part 512a Machined blade C Axis core BC Rotating shaft

Claims (3)

A piece of wood production tool that cuts off a piece of wood from a wooden rod,
A tip fixing portion into which the tip of the rod-like body is inserted;
A base end fixing portion for fixing the base end side of the rod-shaped body;
A cut-out portion that is disposed between the distal end fixing portion and the proximal end fixing portion, and that cuts the outer peripheral surface of the rod-shaped body;
A rotating portion that rotates the distal end fixing portion and the proximal end fixing portion together;
A suction part that is connected to the tip fixing part and attracts the tip of the rod-like body to the tip fixing part by suction; and
The shaving part is
An arc-shaped cutting blade formed symmetrically with respect to a rotation axis perpendicular to the axis of the rod-shaped body fixed to the distal end fixing portion and the base end fixing portion;
Rotate around a rotation axis parallel to the axis,
The cutting blade is in contact with the outer peripheral surface of the rod-shaped body rotated by the rotating portion while rotating around the rotation axis,
The scraper blade is brought into contact with the first part of the rod-like body and the second part located on the proximal side of the first part to produce a piece of wood having a spherical shape or a hemispherical shape at both ends. Wood piece production equipment to do. The proximal end fixing portion is
An insertion part through which the rod-shaped body is inserted;
A first member to which the insertion portion is fixed;
A second member that rotates relative to the first member around the insertion portion;
The first member is formed in an elongated body, slidably moves in a radial direction centered on the insertion portion, and presses the rod-like body inserted through the insertion portion through the insertion portion, It has a holding part in which a groove crossing the radial direction is formed,
The said 2nd member is an elongate body which slidably contacts to the said groove | channel, The distance from one end to the center of the said insertion part has a guide part shorter than the distance from the other end to the center of the said insertion part. Wood chip production equipment described.   The arm part which is formed with a long body, has one end connected to the rotating part so as to be rotatable around the rotation core of the rotating part, and the other end connected to the tip fixing part. 2. Wood chip production apparatus according to 2.