JP2020062770A - Lumber manufacturing method for two-axis circular saw machine - Google Patents

Lumber manufacturing method for two-axis circular saw machine Download PDF

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JP2020062770A
JP2020062770A JP2018194787A JP2018194787A JP2020062770A JP 2020062770 A JP2020062770 A JP 2020062770A JP 2018194787 A JP2018194787 A JP 2018194787A JP 2018194787 A JP2018194787 A JP 2018194787A JP 2020062770 A JP2020062770 A JP 2020062770A
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saw blade
blade
saw
thickness
lumber
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今村 博史
Hiroshi Imamura
博史 今村
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株式会社共和キカイ
Kyowa Kikai:Kk
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Abstract

To provide a lumber manufacturing method for a two-axis circular saw machine capable of preventing a step at cutting on a split surface of a lumber from occurring.SOLUTION: A lower saw blade S2 placed at a downstream side is configured to have an effective radius R2 enough to split over an entire thickness D of a lumber W on a lumber transport surface Wa as well as a blade thickness to be thicker than that of an upper saw blade S1 placed at an upstream side, and to be set with the upper saw blade S1 in a same vertical surface of the lower saw blade S2, and therewith split the lumber W. Further, the upper saw blade S1 is configured to have an effective radius R1 enough to split the lumber W on the lumber transport surface Wa with a thickness more than a half thickness of the lumber.SELECTED DRAWING: Figure 1

Description

この発明は、用材の挽割面の段差をなくして製材工程の合理化を図ることができる二軸丸鋸盤における製材方法に関する。   The present invention relates to a sawing method in a twin-screw circular saw machine that can eliminate the steps on the sawing surface of sawn timber to rationalize the sawing process.
高性能な二軸丸鋸盤が開発され、広く実用されている(特許文献1、2)。   A high-performance twin-screw circular saw machine has been developed and widely used (Patent Documents 1 and 2).
二軸丸鋸盤は、用材の搬送面の上下にそれぞれ上鋸刃、下鋸刃を配設し、上鋸刃は、下鋸刃に対して前後方向、上下方向に平行移動可能である。上鋸刃は、下鋸刃と同一垂直面内にセットして下鋸刃に対して重なり代を有する垂直配置と、下側の有効半径部分が下鋸刃の上側の有効半径部分と水平方向に重なるとともに、用材の搬送面に対して重なり代を有する並列配置とをとることができる。すなわち、上鋸刃、下鋸刃は、垂直配置をとることにより、上下方向から用材の同一垂直面を切断し、上鋸刃、下鋸刃の各有効半径の2倍近くの厚さの用材を一挙に挽き割ることができ、並列配置をとることにより、それぞれの各有効半径以下の厚さの用材の2箇所を同時に切断して挽き割ることができる。なお、上鋸刃、下鋸刃は、同径、同刃厚の同一仕様のチップソーまたは普通の丸鋸刃を使用する。   In the biaxial circular saw machine, an upper saw blade and a lower saw blade are respectively arranged above and below a material conveying surface, and the upper saw blade is movable in the front-rear direction and the vertical direction with respect to the lower saw blade. The upper saw blade is set in the same vertical plane as the lower saw blade and has a vertical arrangement with an overlap margin with respect to the lower saw blade, and the lower effective radius portion is horizontal to the upper effective radius portion of the lower saw blade. In addition to the above, it is possible to adopt a parallel arrangement having an overlap margin with respect to the material conveying surface. That is, by arranging the upper saw blade and the lower saw blade vertically, the same vertical surface of the material is cut from the vertical direction, and the material having a thickness close to twice the effective radius of each of the upper saw blade and the lower saw blade is cut. It is possible to grind all at once, and by arranging them in parallel, it is possible to simultaneously cut and grind two places of the lumber having a thickness equal to or less than each effective radius. As the upper saw blade and the lower saw blade, a tip saw or an ordinary circular saw blade having the same diameter and thickness and having the same specifications is used.
特許第2597641号公報Japanese Patent No. 2597641 特許第3312262号公報Japanese Patent No. 3312262
かかる従来技術によるときは、上鋸刃、下鋸刃を垂直配置にして用材を挽き割ると、用材の挽割面に対し、上鋸刃または下鋸刃の刃先相当の位置に微小な段差を生じることがあるという問題があった。なお、このような挽割面の段差は、必要に応じて、製材後の仕上げ用の切削工程によって除去することができる。   According to such a conventional technique, when the saw material is ground by vertically disposing the upper saw blade and the lower saw blade, a minute step is formed at a position corresponding to the cutting edge of the upper saw blade or the lower saw blade with respect to the sawed surface of the saw material. There was a problem that it might occur. It should be noted that such a step on the ground surface can be removed by a finishing cutting step after sawing, if necessary.
そこで、この発明の目的は、かかる従来技術の問題に鑑み、下鋸刃の有効半径を十分大きくするとともに刃厚を適切に設定することによって、用材の挽割面に段差を生じることがなく、仕上げ用の切削工程を不要にすることができる二軸丸鋸盤における製材方法を提供することにある。   Therefore, in view of the problems of the prior art, an object of the present invention is to sufficiently increase the effective radius of the lower saw blade and to appropriately set the blade thickness, so that a step does not occur on the cutting surface of the sawdust, It is an object of the present invention to provide a sawing method for a twin-screw circular saw that can eliminate the need for a finishing cutting step.
かかる目的を達成するためのこの発明の構成は、用材の搬送面の上下にそれぞれ上鋸刃、下鋸刃を配設し、上流側の上鋸刃が下流側の下鋸刃に対して前後方向、上下方向に平行移動可能な二軸丸鋸盤における製材方法であって、下鋸刃は、搬送面上の用材の厚さの全部を挽割可能な有効半径にするとともに刃厚を上鋸刃の刃厚より大きくし、上鋸刃を下鋸刃と同一垂直面内にセットして上鋸刃、下鋸刃により用材を挽き割ることをその要旨とする。   The configuration of the present invention for achieving such an object is to dispose an upper saw blade and a lower saw blade above and below the conveying surface of a material, and the upper saw blade on the upstream side and the lower saw blade on the downstream side. A sawing method in a twin-screw circular saw that can move in parallel in the vertical and vertical directions, in which the lower saw blade has an effective radius that allows the entire thickness of the lumber on the conveying surface to be cut and the blade thickness to be upper saw. The gist is to make the saw blade thicker than the blade thickness, set the upper saw blade in the same vertical plane as the lower saw blade, and grind the material with the upper saw blade and the lower saw blade.
なお、上鋸刃の刃厚T1 、下鋸刃の刃厚T2 として(T2 −T1 )/2=0.2〜0.3mmとすることができる。   The blade thickness T1 of the upper saw blade and the blade thickness T2 of the lower saw blade can be set to (T2-T1) /2=0.2 to 0.3 mm.
また、上鋸刃は、搬送面上の用材の厚さの半分以上を挽割可能な有効半径にしてもよい。   In addition, the upper saw blade may have an effective radius capable of cutting half or more of the thickness of the material on the conveyance surface.
かかる発明の構成によるときは、上鋸刃、下鋸刃は、それぞれ搬送面上の用材の同一垂直面を切断して用材を一挙に挽き割ることができる。また、このとき、下流側の下鋸刃は、上鋸刃より刃厚が大きく、搬送面上の用材の厚さの全部を挽割可能であるため、挽割面の全面を平滑に仕上げ、挽割面に段差を生じるおそれがない。なお、下鋸刃は、上鋸刃と同一垂直面を挽き割るため、上鋸刃を使用しない場合に比して、本体厚を薄くして全体剛性を小さくすることができ、耐久性を向上させることができる。   According to the configuration of the invention, the upper saw blade and the lower saw blade can cut the sawdust at once by cutting the same vertical plane of the sawdust on the conveying surface. Further, at this time, the lower saw blade on the downstream side has a blade thickness larger than that of the upper saw blade, and since it is possible to grind all the thickness of the material on the conveying surface, the whole grind surface is finished smoothly, There is no risk of a step on the ground surface. Since the lower saw blade grinds the same vertical plane as the upper saw blade, it is possible to reduce the overall thickness and reduce the overall rigidity compared to the case where the upper saw blade is not used, improving durability. Can be made.
下鋸刃の刃厚T2 は、上鋸刃の刃厚T1 に対し、(T2 −T1 )/2=0.2〜0.3mmとすることにより、用材の歩留りを過度に損うことがなく、用材の挽割面の全面を良好に仕上げることができる。   The blade thickness T2 of the lower saw blade is (T2-T1) /2=0.2 to 0.3 mm with respect to the blade thickness T1 of the upper saw blade, so that the yield of the material is not excessively impaired. , The entire surface of the sawing surface of the sawing material can be finished well.
上鋸刃は、搬送面上の用材の厚さの半分以上、より好ましくは、半分を多少超える範囲を挽割可能な有効半径に設定することにより、同径、同刃厚の同一仕様の下鋸刃と組み合わせて、従来の二軸丸鋸盤における垂直配置の場合と同様の挽割動作を円滑に実現することができる。   The upper saw blade has the same diameter and the same blade thickness under the same specifications by setting the effective radius that can be divided into more than half of the thickness of the material on the conveying surface, and more preferably, slightly over half the thickness. In combination with the saw blade, the same cutting operation as in the case of the vertical arrangement in the conventional two-axis circular saw machine can be smoothly realized.
二軸丸鋸盤の要部動作説明図Illustration of main operation of twin-axis circular saw machine 図1のX矢視相当模式説明図Schematic explanatory view corresponding to arrow X in FIG.
以下、図面を以って発明の実施の形態を説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.
二軸丸鋸盤における製材方法は、上流側の上鋸刃S1 、下流側の下鋸刃S2 を備える二軸丸鋸盤において実施する(図1、図2)。なお、上鋸刃S1 は、下鋸刃S2 に対し、前後方向(図1の紙面に垂直方向)、上下方向に平行移動可能である。ただし、図2(A)は、図1のX矢視相当模式図、図2(B)は、同図(A)の要部模式拡大図である。   The lumbering method in the biaxial circular saw machine is carried out in the biaxial circular saw machine including the upper saw blade S1 on the upstream side and the lower saw blade S2 on the downstream side (FIGS. 1 and 2). The upper saw blade S1 can move in parallel with respect to the lower saw blade S2 in the front-rear direction (the direction perpendicular to the paper surface of FIG. 1) and the vertical direction. However, FIG. 2 (A) is a schematic view corresponding to the arrow X in FIG. 1, and FIG. 2 (B) is a schematic enlarged view of a main part of FIG. 2 (A).
上鋸刃S1 、下鋸刃S2 は、用材Wの搬送面Wa の上下に配設する水平の駆動軸S1a、S2aに対し、それぞれフランジS1b、S1b、S2b、S2bを介して着脱可能に装着されている。なお、上鋸刃S1 、下鋸刃S2 は、それぞれ外周に刃先用のチップS1c、S1c…、S2c、S2c…を設けるチップソーである。上鋸刃S1 の刃厚T1 に対し、下鋸刃S2 の刃厚T2 >T1 は、(T2 −T1 )/2=0.2〜0.3mmに設定されている。また、上鋸刃S1 、下鋸刃S2 の有効半径R1 、R2 は、それぞれ搬送面Wa 上の用材Wの厚さDの半分以上、全部を用材Wの上方向、下方向から切断して挽割可能に設定されている。すなわち、図1において、上鋸刃S1 の有効半径R1 =D/2+δ1 >D/2であり、下鋸刃S2 の有効半径R2 =D+δ2 >Dである。ただし、余裕寸法δ1 、δ2 は、それぞれ数mm以上数10mm以下程度に設定するとよい。   The upper saw blade S1 and the lower saw blade S2 are detachably attached to horizontal drive shafts S1a and S2a arranged above and below the conveyance surface Wa of the work material W through flanges S1b, S1b, S2b and S2b, respectively. ing. The upper saw blade S1 and the lower saw blade S2 are tip saws having tips S1c, S1c ..., S2c, S2c. The blade thickness T2 of the lower saw blade S2 is T2> T1 while the blade thickness T1 of the upper saw blade S1 is (T2-T1) /2=0.2 to 0.3 mm. Further, the effective radii R1 and R2 of the upper saw blade S1 and the lower saw blade S2 are each half or more of the thickness D of the material W on the conveying surface Wa, and the whole is cut and cut from above and below the material W. It is set to be splittable. That is, in FIG. 1, the effective radius R1 of the upper saw blade S1 = D / 2 + δ1> D / 2 and the effective radius R2 of the lower saw blade S2 = D + δ2> D. However, it is advisable to set the margin sizes δ1 and δ2 to several mm or more and several tens mm or less.
上鋸刃S1 を下鋸刃S2 と同一垂直面内にセットし、上鋸刃S1 、下鋸刃S2 に向けて搬送面Wa 上に用材Wを送材すると(図1の矢印W1 方向)、上流側の上鋸刃S1 は、用材Wの上半部を上方向から切断し、下流側の下鋸刃S2 は、用材Wの残りの下半部を切断して、上鋸刃S1 、下鋸刃S2 により用材Wを挽き割ることができる。また、下鋸刃S2 は、同時に挽割面の全面を切削して仕上げることにより、挽割面に段差が生じることを防止する。   When the upper saw blade S1 is set in the same vertical plane as the lower saw blade S2 and the material W is fed onto the conveying surface Wa toward the upper saw blade S1 and the lower saw blade S2 (arrow W1 direction in FIG. 1), The upper saw blade S1 on the upstream side cuts the upper half part of the material W from above, and the lower saw blade S2 on the downstream side cuts the remaining lower half part of the material W to obtain the upper saw blade S1, The sawdust S2 can be used to cut the sawdust W. Further, the lower saw blade S2 simultaneously cuts and finishes the entire cutting surface to prevent a step from being formed on the cutting surface.
ただし、上鋸刃S1 、下鋸刃S2 は、それぞれ図1の矢印Y1 、Y2 方向に回転駆動するとともに、それぞれ下側、上側の有効半径部分のほぼ全部を用材Wの挽割動作に使用する。また、上鋸刃S1 、下鋸刃S2 の垂直方向、水平方向の軸間距離a、bは、それぞれ上鋸刃S1 、下鋸刃S2 が干渉することなく動作し得る最小距離に設定すればよい。なお、上鋸刃S1 、下鋸刃S2 は、チップソーでない普通の丸鋸刃であってもよい。   However, the upper saw blade S1 and the lower saw blade S2 are rotationally driven in the directions of the arrows Y1 and Y2 of FIG. 1, respectively, and almost all of the lower and upper effective radius portions are used for the cutting operation of the material W, respectively. . If the vertical and horizontal axial distances a and b of the upper saw blade S1 and the lower saw blade S2 are set to the minimum distances at which the upper saw blade S1 and the lower saw blade S2 can operate without interference, respectively. Good. The upper saw blade S1 and the lower saw blade S2 may be ordinary circular saw blades other than the tip saw.
一方、上鋸刃S1 、下鋸刃S2 の相対位置や配列を変えることなく、下鋸刃S2 を上鋸刃S1 と同一仕様に変更すると、従来の二軸丸鋸盤におけると同様にして、上鋸刃S1 、下鋸刃S2 を垂直配置、並列配置して用材Wの1箇所または2箇所を挽き割ることができる。   On the other hand, if the lower saw blade S2 is changed to the same specification as the upper saw blade S1 without changing the relative position or arrangement of the upper saw blade S1 and the lower saw blade S2, the upper saw blade S1 will be changed into The saw blade S1 and the lower saw blade S2 can be vertically arranged or arranged side by side to cut one or two places of the material W.
この発明は、有効半径が十分大きく、刃厚が大きな下鋸刃を使用することにより、挽割面に段差を生じることがなく、たとえば紙材、布材などのシート材を扱う使い捨てのパレット材などのように、表面の段差を嫌う部材を効率よく製材して製作する用途に対し、殊に好適に適用することができる。   The present invention uses a lower saw blade having a sufficiently large effective radius and a large blade thickness to prevent a step from being formed on the sawing surface, and is a disposable pallet material for handling sheet materials such as paper materials and cloth materials. It can be particularly suitably applied to applications such as the case where a member that does not like a step on the surface is efficiently milled and manufactured.
W…用材
Wa …搬送面
D…厚さ
S1 …上鋸刃
S2 …下鋸刃
R1 、R2 …有効半径
T1 、T2 …刃厚

特許出願人 株式会社 共和キカイ
W ... Material Wa ... Conveying surface D ... Thickness S1 ... Upper saw blade
S2 ... Lower saw blade
R1, R2 ... Effective radius T1, T2 ... Blade thickness

Patent applicant Kyowa Kikai Co., Ltd.

Claims (3)

  1. 用材の搬送面の上下にそれぞれ上鋸刃、下鋸刃を配設し、上流側の上鋸刃が下流側の下鋸刃に対して前後方向、上下方向に平行移動可能な二軸丸鋸盤における製材方法であって、下鋸刃は、搬送面上の用材の厚さの全部を挽割可能な有効半径にするとともに刃厚を上鋸刃の刃厚より大きくし、上鋸刃を下鋸刃と同一垂直面内にセットして上鋸刃、下鋸刃により用材を挽き割ることを特徴とする二軸丸鋸盤における製材方法。   A two-axis circular saw machine in which upper and lower saw blades are arranged above and below the material conveying surface, and the upstream upper saw blade can move in parallel in the front-rear direction and the vertical direction with respect to the downstream lower saw blade. In the lumbering method in, the lower saw blade makes the entire thickness of the lumber on the conveying surface an effective radius that can be cut, and makes the blade thickness larger than the blade thickness of the upper saw blade, and lowers the upper saw blade. A sawing method for a twin-screw circular saw machine, which is set in the same vertical plane as the saw blade and saws the sawing material with an upper saw blade and a lower saw blade.
  2. 上鋸刃の刃厚T1 、下鋸刃の刃厚T2 として(T2 −T1 )/2=0.2〜0.3mmとすることを特徴とする請求項1記載の二軸丸鋸盤における製材方法。   2. The method for sawing in a biaxial circular saw machine according to claim 1, wherein the blade thickness T1 of the upper saw blade and the blade thickness T2 of the lower saw blade are (T2-T1) /2=0.2 to 0.3 mm. .
  3. 上鋸刃は、搬送面上の用材の厚さの半分以上を挽割可能な有効半径にすることを特徴とする請求項1または請求項2記載の二軸丸鋸盤における製材方法。   The sawing method in a twin-screw saw according to claim 1 or 2, wherein the upper saw blade has an effective radius capable of cutting half or more of the thickness of the lumber on the conveying surface.
JP2018194787A 2018-10-16 2018-10-16 Lumber manufacturing method for two-axis circular saw machine Pending JP2020062770A (en)

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