JPH0635617B2 - How to insert a band saw - Google Patents
How to insert a band sawInfo
- Publication number
- JPH0635617B2 JPH0635617B2 JP5257087A JP5257087A JPH0635617B2 JP H0635617 B2 JPH0635617 B2 JP H0635617B2 JP 5257087 A JP5257087 A JP 5257087A JP 5257087 A JP5257087 A JP 5257087A JP H0635617 B2 JPH0635617 B2 JP H0635617B2
- Authority
- JP
- Japan
- Prior art keywords
- band saw
- saw material
- band
- shot
- tooth flank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 claims description 58
- 238000000034 method Methods 0.000 description 21
- 230000035882 stress Effects 0.000 description 17
- 238000003780 insertion Methods 0.000 description 15
- 230000037431 insertion Effects 0.000 description 15
- 238000012545 processing Methods 0.000 description 14
- 238000010438 heat treatment Methods 0.000 description 12
- 238000005480 shot peening Methods 0.000 description 11
- 239000002245 particle Substances 0.000 description 8
- 238000003825 pressing Methods 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 4
- 238000012966 insertion method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- LNSPFAOULBTYBI-UHFFFAOYSA-N [O].C#C Chemical group [O].C#C LNSPFAOULBTYBI-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D63/00—Dressing the tools of sawing machines or sawing devices for use in cutting any kind of material, e.g. in the manufacture of sawing tools
- B23D63/18—Straightening damaged saw blades; Reconditioning the side surface of saw blades, e.g. by grinding
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat Treatment Of Articles (AREA)
Description
【発明の詳細な説明】 a. 産業上の利用分野 本発明は、帯鋸の製造工程において、帯鋸素材を腰入れ
加工する方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION a. Field of Industrial Application The present invention relates to a method for forming a band saw material in a band saw manufacturing process.
b. 従来の技術 一般に、材料に力を加えると一定の変形を起こすが、加
える力を徐々に増すとそれに応じて変形量が大となる。
ところが、材料の形状、力の加え方によっては、その加
える力がある大きさに達すると、それ迄の変形とは全然
別異の変形に突然移行する現象すなわち座屈現象が生じ
る。b. Conventional technology In general, when a force is applied to a material, a certain amount of deformation occurs, but when the applied force is gradually increased, the amount of deformation increases correspondingly.
However, depending on the shape of the material and how the force is applied, when the applied force reaches a certain level, a phenomenon in which the deformation suddenly shifts to a completely different deformation from the previous deformation, that is, a buckling phenomenon occurs.
帯鋸の場合、上述の如き座屈現象が熱応力によって起こ
ることがある。なお、この座屈現象が生じるメカニズム
は次の如くである。In the case of a band saw, the above-mentioned buckling phenomenon may occur due to thermal stress. The mechanism of this buckling phenomenon is as follows.
帯鋸を用いて木材、木質材料（プラスチックを含む）等
の被切断物を切削するときには、帯鋸の歯辺部及びその
近傍に摩擦熱が発生するが、その際に帯鋸の鋸背側の部
分には摩擦熱が殆ど発生しないため、帯鋸の歯辺部と鋸
背部との間に比較的大きな温度勾配を生じる。しかし
て、歯辺部に発生する摩擦熱のために歯辺部近傍の縁部
は長手方向に伸びようとするが、その他の部分の抵抗に
より伸びることができないため、当該その他の部分に引
張力が付与され、その反作用として歯辺部近傍の縁部に
圧縮応力を生じることとなる。従って、帯鋸の歯辺部と
鋸背部との間で膨脹する割合が大きく異なり、歯辺部近
傍の縁部が膨脹するのに伴いその縁部に圧縮応力が発生
すると共に当該その他の部分に引張応力が発生し、その
結果、これらの間に応力勾配を生じる。When cutting an object such as wood or wood material (including plastic) with a band saw, frictional heat is generated at the tooth flank of the band saw and its vicinity. Generates almost no frictional heat, so that a relatively large temperature gradient is generated between the tooth flank and the back of the band saw. Then, due to the frictional heat generated on the tooth flank, the edge near the tooth flank tries to stretch in the longitudinal direction, but because the resistance of other portions prevents it from stretching, the tensile force is applied to the other portions. Is given, and as a reaction thereof, compressive stress is generated in the edge portion near the tooth side portion. Therefore, the rate of expansion is greatly different between the tooth flank and the back of the band saw, and as the edge near the tooth flank expands, compressive stress is generated at that edge and tension is applied to the other parts. Stresses are created which result in a stress gradient between them.
熱応力が大となって帯鋸の歯辺部がある温度まで上昇す
ると、それまで平面的に伸び縮みしていたものが急に別
の種類の変形（例えば、帯鋸が断面くの字状に曲がる変
形）が生じる。このような変形即ち座屈を生じると、帯
鋸はもはや切削不能となり、切削作業に支障を来たすこ
ととなる。When the thermal stress becomes large and the tooth flank of the band saw rises to a certain temperature, what has been planarly expanded and contracted until then suddenly becomes another type of deformation (for example, the band saw bends in a V shape in cross section). Deformation) occurs. If such deformation or buckling occurs, the band saw will no longer be able to cut, which will interfere with the cutting work.
そこで、従来より、上述の如き摩擦熱による座屈の発生
を防止するために、帯鋸素材に腰入れ加工を行なうよう
にしている。この腰入れ加工は、帯鋸素材の巾方向の中
央部分を塑性展伸処理又は熱処理を施すことにより行な
われ、これにより歯辺部近傍の縁部において長手方向に
引張内力が付与され、切削時に熱応力として歯辺部及び
その近傍に生じる長手方向の圧縮応力が打消されること
となって座屈が効果的に防止される。Therefore, conventionally, in order to prevent the occurrence of buckling due to the frictional heat as described above, the band saw material is subjected to waist insertion processing. This waist insertion process is performed by subjecting the central portion of the band saw material in the width direction to plastic expansion treatment or heat treatment, whereby a tensile internal force is applied in the longitudinal direction at the edge near the tooth flank, and heat is applied during cutting. As the stress, the compressive stress in the longitudinal direction that occurs in the tooth flank and its vicinity is canceled out, and buckling is effectively prevented.
ところで、この種の腰入れ方法としては、ローラ加工法
による塑性展伸処理、或いは火焔加熱法による熱処理が
従来より行なわれている。By the way, as this type of waist insertion method, plastic expansion processing by a roller processing method or heat treatment by a flame heating method has been conventionally performed.
上述のロール加圧法は、第５図に示すように、帯鋸素材
ａの歯辺部ｂと鋸背部ｃとの間の中央部分ｄを一対の金
属ローラｅ，ｆにて強力に挾持・押圧しつつ、その長手
方向に移動させながら塑性展伸加工する方法であり、そ
の作業に当っては、第６図において鎖線で示す複数の軌
道Ｒに沿って順次ロールをかけて腰入れを行なうように
している。In the roll pressing method described above, as shown in FIG. 5, the central portion d between the tooth flank portion b and the saw spine portion c of the band saw material a is strongly held and pressed by the pair of metal rollers e and f. Meanwhile, this is a method of performing plastic expansion while moving in the longitudinal direction, and in performing the work, rolls are sequentially rolled along a plurality of tracks R shown by chain lines in FIG. ing.
また、上述の火焔加熱法は、例えば酸素−アセチレン焔
等の火焔を第７図に示す如く帯鋸素材ａの中央箇所ｇに
向けて吹き付けて熱処理する方法であり、その作業に当
っては、火焔を前記中央箇所ｇに沿って長手方向に移動
させながら加熱して腰入れを行なうようにしている。Further, the above-mentioned flame heating method is a method of spraying a flame such as oxygen-acetylene flame toward the central portion g of the band saw material a as shown in FIG. 7 to heat-treat it. Is moved while moving in the longitudinal direction along the central portion g to heat the waist.
ｃ．発明が解決しようとする問題点 しかしながら、上述のようなローラ加圧法や火焔加熱法
は次に述べるような大きな問題点があった。c. Problems to be Solved by the Invention However, the roller pressing method and the flame heating method as described above have the following major problems.
まず、ロール加圧法の場合には、ハンマーで帯鋸素材を
たたいて塑性展伸処理を行なう古典的なハンマー打法に
比べて勘やコツ等の熟練を必要としないが、前加工の精
度の良否によって影響を受け易く、腰入れの局部的強弱
を生じ易い。従って、腰入れ強度が加工の全面に亘って
不均一となる場合が多く、このような場合には、再三繰
り返してローラ加圧を行なうか、或いは、ハンマー打法
を併用するようにしていた。このため、生産効率が非常
に悪く、しかも一定の加工条件下で均一な腰入れ強度を
得ることが困難であり、自動化を図ることができないと
いった大きな問題点があった。First, in the case of the roll pressing method, skill such as intuition and tips is not required as compared with the classical hammer striking method in which a plastic band expanding process is performed by hitting a band saw material with a hammer, but the accuracy of the pre-processing can be improved. It is easily affected by the quality, and local strength of the hip insertion is likely to occur. Therefore, the waist insertion strength often becomes non-uniform over the entire surface of the processing. In such a case, the roller pressure is repeatedly applied repeatedly or the hammering method is used together. For this reason, the production efficiency is very poor, and it is difficult to obtain a uniform waist strength under constant processing conditions, and there is a big problem that automation cannot be achieved.
また、火焔加熱法の場合には、400℃前後の温度となる
ように帯鋸素材ａの中央箇所ｇを例えば30cmの長さずつ
加熱しながら長手方向の全体を段階的に加熱処理するの
に勘やコツを必要とし、このような腰入れ加工を全面に
亘って均一に行なうには可成りの熟練を必要とする。し
かも、帯鋸素材ａの焼戻し温度は400 ℃位であるため、
400℃前後の火焔加熱により帯鋸素材ａに軟化を生じ、
硬さむらを生じ易い。このため、一回の火焔加熱処理で
は良好な腰入れを行なうことができないのが現状であ
る。よって、この方法は、作業性が悪く、均質な製品を
得ることが困難であり、自動化を図ることも不可能であ
った。Further, in the case of the flame heating method, it is necessary to heat the central portion g of the band saw material a by a length of, for example, 30 cm so that the temperature becomes around 400 ° C. However, it requires a considerable amount of skill to carry out such a waist insertion process uniformly over the entire surface. Moreover, since the tempering temperature of the band saw material a is about 400 ° C,
Flame heating around 400 ℃ causes softening of the band saw material a,
Hardness unevenness is likely to occur. For this reason, it is the current situation that good flame heating cannot be performed by one flame heating treatment. Therefore, this method has poor workability, it is difficult to obtain a homogeneous product, and automation is impossible.
本発明は、上述の如き実状に鑑みて発明されたものであ
って、その目的は、勘やコツ等の熟練を全く必要とする
ことなく能率的にかつ均質な腰入れ加工を施すことがで
き、しかも自動化を図り得る帯鋸の腰入れ方法を提供す
ることにある。The present invention has been invented in view of the actual situation as described above, and an object thereof is to perform efficient and uniform hip insertion processing without requiring any skill such as intuition or tips. In addition, it is to provide a waist saw insertion method which can be automated.
d. 問題点を解決するための手段 上述の問題点を解決するために、本発明では、帯鋸素材
の歯辺部近傍の縁部に隣接しかつ前記帯鋸素材の長手方
向に延びる帯状部分にショット粒を投射することによっ
て、前記帯状部分の長手方向に圧縮応力を発生せしめ、
もって前記縁部の長手方向に引張内力を付与するように
している。d. Means for Solving the Problems In order to solve the above-mentioned problems, in the present invention, a shot is made on a band-shaped portion which is adjacent to an edge portion near the tooth side of the band saw material and extends in the longitudinal direction of the band saw material. By projecting particles, a compressive stress is generated in the longitudinal direction of the strip-shaped portion,
Therefore, a tensile internal force is applied in the longitudinal direction of the edge portion.
以下、本発明の一実施例に付き第１図〜第４図を参照し
て説明する。An embodiment of the present invention will be described below with reference to FIGS.
第１図は、腰入れ加工すべき帯鋸素材１の平面図を示す
ものであって、同図において、２は帯鋸素材１の一側部
に形成された歯辺部、３は歯辺部２の反対側に形成され
た平坦状の鋸背部である。FIG. 1 is a plan view of a band saw material 1 to be subjected to waist insertion processing. In FIG. 1, 2 is a tooth side portion formed on one side of the band saw material 1, and 3 is a tooth side portion 2. It is a flat saw back formed on the opposite side of.
また第２図は、上述の帯鋸素材１をショットピーニング
加工するための機構を示すものであって、同図におい
て、４はコンプレッサー方式のショット粒投射装置、５
は帯鋸素材１の歯辺部２及びその近傍の縁部６を遮蔽す
る遮蔽部材、７は帯鋸素材１の鋸背部３及びその近傍の
縁部８を遮蔽する遮蔽部材である。上述のショット粒投
射装置４は図外のコンプレッサから圧縮空気を供給する
導管９と、図外のショット粒供給源からショット粒を供
給する導管10とがそれぞれ連結された装置本体11を備え
ており、圧縮空気の作用によりショット粒が装置本体11
の射出孔12から高速で投射されるように構成されてい
る。なお、図示を省略したが、このショット粒投射装置
４は互いに対向する位置にそれぞれ配設されており、こ
れらの間に被加工物である帯鋸素材１の一部が配置され
るようになっている。FIG. 2 shows a mechanism for shot peening the band saw material 1 described above. In FIG. 2, 4 is a compressor type shot grain projection device, and 5 is a compressor type shot grain projection device.
Is a shielding member for shielding the tooth flank portion 2 of the band saw material 1 and the edge portion 6 in the vicinity thereof, and 7 is a shielding member for shielding the saw back portion 3 of the band saw material 1 and the edge portion 8 in the vicinity thereof. The above-mentioned shot grain projecting device 4 is provided with a device body 11 to which a conduit 9 for supplying compressed air from a compressor (not shown) and a conduit 10 for supplying shot particles from a shot particle supply source (not shown) are connected. , Shot particles are generated by the action of compressed air.
The projection hole 12 is configured to project at high speed. Although not shown in the drawing, the shot grain projecting devices 4 are arranged at positions facing each other, and a part of the band saw material 1 as a workpiece is arranged between them. There is.
次に、焼入れ及び焼戻し処理を完了した平板状の帯鋸素
材１をエンドレスベルト状にすべくその両端を溶接した
後に、腰入れ加工を施す際の操作に付き述べる。Next, a description will be given of the operation of performing waist insertion processing after welding both ends of the flat plate-shaped band saw material 1 that has been quenched and tempered to form an endless belt.
まず、第２図及び第３図に示す如く、図外の支持用治具
にて帯鋸素材１を垂直状に立てた状態で支持固定すると
共に、帯鋸素材１を歯辺部２及び鋸背部３に遮蔽部材
５，７をそれぞれ取付ける。しかる後、図外の駆動機構
によりエンドレス状の帯鋸素材１を回動（第２図におい
ては紙面に直交する方向に水平移動）させながら、一対
のショット粒投射装置４から帯鋸素材１の両面に向けて
ほぼ直角にショット粒を投射する。これにより、前記遮
蔽部材５，７の間帯状部分Ｌ（第１図及び第３図参照）
にショットピーニング加工を施す。First, as shown in FIG. 2 and FIG. 3, the band saw material 1 is supported and fixed by a supporting jig (not shown) in a vertically standing state, and the band saw material 1 is also provided on the tooth flank portion 2 and the saw back portion 3. The shielding members 5 and 7 are attached to each. Then, while rotating the endless band saw material 1 (horizontal movement in the direction perpendicular to the paper surface in FIG. 2) by a drive mechanism (not shown), a pair of shot grain projection devices 4 are applied to both sides of the band saw material 1. Shot particles are projected almost at a right angle. Thereby, the strip-shaped portion L between the shielding members 5 and 7 (see FIGS. 1 and 3)
Shot peening is applied to.
本方法の具体例は次の通りである。A specific example of this method is as follows.
具体例 (1) 帯鋸素材１の材質 SKS51 (2) 帯鋸素材１の寸法 鋸背部３から歯底部13までの巾Ｗ（第１図 参照） 120mm 板厚 0.8mm (3) 帯鋸素材１のショット粒投射領域（帯状部分Ｌ） Ｌ＝90mmであり、かつ、鋸背部３と歯底部13との中央箇
所ｇからそれぞれ45mmの部分 (4) 加工条件 ＜イ＞ショット粒の直径 0.8mm ＜ロ＞ショット粒の硬さ HRC58 ＜ハ＞ショット粒の材質 鋳鋼 ＜ニ＞ショット粒の投射速度 40m/s ＜ホ＞ショット粒の投射角度 90゜ ＜ヘ＞帯鋸素材１の移動速度 30mm／ｓ ＜ト＞ショット粒投射装置に供給される圧縮空気の圧力
（ゲージ圧）５kg／mm２ この具体例によって得られた帯鋸素材１の表面の残留応
力を測定したところ第４図に示す如き結果を得た。第４
図に示す測定結果からわかるように、ショットピーニン
グ加工前の帯鋸素材１の残留応力は破線で示される如く
その全域に亘って＋５kg／mm２程度であったが、ショッ
トピーニング加工後は、帯鋸素材１のうちショット粒を
投射した帯状部分Ｌには実線で示される如く−30kg f／
mm２程度の充分な圧縮応力が発生しているのが認められ
る。そして、ショットピーニング加工後の帯鋸素材１の
うち前記帯状部分Ｌ以外の領域すなわち歯辺部２の近傍
の縁部６及び鋸背部３の近傍の縁部８の両部分には＋10
をkg f／mm２程度の引張内力が発生しているのが認めら
れる。Example (1) Material of band saw material 1 SKS51 (2) Dimension of band saw material 1 Width W from saw back part 3 to root 13 (see Fig. 1) 120mm Plate thickness 0.8mm (3) Shot grain of band saw material 1 Projection area (belt L) L = 90 mm and 45 mm from the center point g of the saw back 3 and tooth bottom 13 respectively (4) Processing conditions <A> Shot grain diameter 0.8 mm <B> Shot Grain hardness HRC58 <C> Shot grain material Cast steel <D> Shot grain projection speed 40 m / s <V> Shot grain projection angle 90 ° <F> Moving speed of band saw material 1 30 mm / s <G> shot The pressure (gauge pressure) of the compressed air supplied to the grain projection device was 5 kg / mm 2. The residual stress on the surface of the band saw material 1 obtained by this example was measured, and the results shown in FIG. 4 were obtained. Fourth
As can be seen from the measurement results shown in the figure, the residual stress of the band saw material 1 before the shot peening process was about +5 kg / mm 2 over the entire area as shown by the broken line, but after the shot peening process, the band saw material 1 As shown by the solid line, the strip-shaped portion L on which the shot grains are projected is -30 kg f /
It is recognized that sufficient compressive stress of about mm 2 is generated. In the area other than the band-shaped portion L of the band saw material 1 after the shot peening process, that is, +10 is applied to both the edge 6 near the tooth flank 2 and the edge 8 near the saw spine 3.
It is recognized that a tensile internal force of about kg f / mm 2 is generated.
従って、この帯鋸素材１は良好な腰入れ加工がなされて
いることが確認された。Therefore, it was confirmed that the band saw material 1 was subjected to good waist insertion processing.
すなわち、帯鋸使用時に歯辺部２及びその近傍の縁部６
に摩擦熱が発生してその内部に圧縮応力が生じても、シ
ョットピーニング加工にて圧縮応力が付与された前述の
帯状部分Ｌの存在により前記縁部６には予め引張内力が
付与されているので、前記帯状部分Ｌ及び鋸背部３近傍
の縁部８に引張力を及ぼすことなく熱膨脹することとな
り、従って大きな応力勾配を生じるおそれがない。この
ため、帯鋸の熱座屈現象の発生を効果的に防止できる。That is, when the band saw is used, the tooth flank portion 2 and the edge portion 6 in the vicinity thereof
Even if frictional heat is generated in the inside and a compressive stress is generated inside the inside, a tensile internal force is applied to the edge portion 6 in advance due to the existence of the above-described strip-shaped portion L to which the compressive stress is applied by the shot peening process. Therefore, thermal expansion does not occur on the strip-shaped portion L and the edge portion 8 near the saw spine portion 3 without exerting a tensile force, and therefore a large stress gradient is not likely to occur. Therefore, the occurrence of the thermal buckling phenomenon of the band saw can be effectively prevented.
このような効果を確かめるために、本例で得られた帯鋸
素材１をアサリ出し加工及び歯仕上げ加工を施した後に
切削試験を行ったところ、熱座屈という異常現象は全く
発生せず、耐久性についても従来のロール加圧法或いは
火焔加熱法による腰入れ加工と同様であり、良好な結果
を得られた。In order to confirm such an effect, a cutting test was performed after the band saw material 1 obtained in this example was subjected to a cleaving process and a tooth finishing process, and no abnormal phenomenon of thermal buckling occurred at all. The properties were similar to those of the conventional roll pressing method or flame heating method, and good results were obtained.
ところで、本例の場合は、帯鋸素材１の両縁部６，８を
除いた帯状部分Ｌにショットピーニング加工を施すよう
にしているので、強い腰入れをしても帯鋸素材１の残留
応力分布は巾方向に沿ってバランスすることとなり、従
って帯鋸素材１が反り返ってしまうようなおそれはな
い。By the way, in the case of this example, since the band-shaped portion L of the band-saw material 1 excluding both edges 6 and 8 is subjected to shot peening, the residual stress distribution of the band-saw material 1 is distributed even if strong backing is performed. Is balanced along the width direction, so that there is no fear that the band saw material 1 will warp.
以上、本発明の一実施例の付き述べたが、本発明は、既
述の実施例に限定されるものではなく、本発明の技術的
思想に基づいて各種の変更が可能である。Although one embodiment of the present invention has been described above, the present invention is not limited to the embodiment described above, and various modifications can be made based on the technical idea of the present invention.
例えば、弱い腰入れでよい場合には、帯鋸素材１の歯辺
部２近傍の縁部６を除く全ての部分（前記帯状部分Ｌ及
び縁部８）を弱くショートピーニング加工するようにし
てもよい。すなわちこの場合には、歯辺部２と鋸背部３
との間に残留応力のアンバランスを生じるが、弱い腰入
れ加工であるため帯鋸素材１が反り返ってしまうような
おそれがないからである。なお、ショートピーニング加
工の強弱すなわち腰入れ強度の強弱は、ショット粒の直
径、材質及び硬さ、ショット粒投射速度、ショット粒投
射時間等を調整することによって容易に調整可能であ
る。For example, when weak waist insertion is sufficient, all portions (the belt-shaped portion L and the edge portion 8) of the band saw material 1 in the vicinity of the tooth flank portion 2 may be weakly short-peened. . That is, in this case, the tooth flank portion 2 and the saw back portion 3
This is because there is an imbalance in residual stress between and, but since the banding process is weak, there is no fear that the band saw material 1 will warp. The strength of the short peening process, that is, the strength of the waist insertion strength can be easily adjusted by adjusting the diameter, material and hardness of shot particles, shot particle projection speed, shot particle projection time, and the like.
ｅ．発明の効果 以上の如く本発明は、帯鋸素材の歯辺部近傍の縁部に隣
接しかつ前記帯鋸素材の長手方向に延びる帯状部分にシ
ョット粒を投射することによって、前記帯状部分の長手
方向に圧縮応力を発生せしめ、もって前記縁部の長手方
向に引張内力を付与するようにしたものであるから、簡
単なショットピーニング加工にて良好な腰入れ加工が施
された帯鋸を得ることができる。しかも、本発明によれ
ば、従来の火焔加熱法に比べて勘やコツ等の熟練を要す
ることなく均一な腰入れ強度を得ることができ、また従
来のロール加圧法のような面倒な繰り返し作業を行なう
ことなく一回の作業にて能率的に腰入れ加工を行なうこ
とができる。e. EFFECTS OF THE INVENTION As described above, according to the present invention, the shot grains are projected to the strip-shaped portion that is adjacent to the edge portion of the band-saw material in the vicinity of the tooth flank and that extends in the longitudinal direction of the band-saw material. Since a compressive stress is generated and a tensile internal force is applied in the longitudinal direction of the edge portion, it is possible to obtain a band saw that has been subjected to good waist insertion processing by simple shot peening processing. Moreover, according to the present invention, it is possible to obtain a uniform waist strength without requiring skill such as intuition and tips as compared with the conventional flame heating method, and the troublesome repetitive work like the conventional roll pressing method. It is possible to efficiently perform waist insertion processing in one operation without performing.
さらに、本発明に係る腰入れ方法を実施する装置として
は従来公知のショットピーニング装置を用いればよく、
従って腰入れ加工を自動化して省力化を図ることも容易
に可能である。Furthermore, as a device for carrying out the waist insertion method according to the present invention, a conventionally known shot peening device may be used,
Therefore, it is possible to easily save labor by automating the waist inserting process.
第１図〜第４図は本発明の一実施例を説明するためのも
のであって、第１図は帯鋸素材の平面図、第２図はショ
ット粒投射機構を示す断面図、第３図は遮蔽部材が取付
けられた帯鋸素材の平面図、第４図はショットピーニン
グ加工前（ショット粒投射前）及びショットピーニング
加工後（ショット粒投射後）の帯鋸素材の残留応力の測
定結果を示すグラフ、第５図及び第６図は従来のロール
加圧法による帯鋸素材の腰入れ加工を説明するためのも
のであって、第５図は帯鋸素材を一対の金属ローラにて
挾持・押圧している状態を示す断面図、第６図は帯鋸素
材のローラ軌道を示す平面図、第７図は従来の火焔加熱
方法による帯鋸素材の腰入れ加工を説明するための断面
図である。 １……帯鋸素材、 ２……歯辺部、 ３……鋸背部、 ４……コンプレッサー方式のショット粒投射装置、 ５，７……遮蔽部材、 ６，８……縁部、 13……歯底部、 Ｗ……帯鋸素材１の幅、 Ｌ……帯鋸素材１の帯状部分（帯鋸素材１のショット粒
投射領域）。1 to 4 are for explaining one embodiment of the present invention. FIG. 1 is a plan view of a band saw material, FIG. 2 is a sectional view showing a shot grain projection mechanism, and FIG. Is a plan view of the band saw material to which the shielding member is attached, and FIG. 4 is a graph showing measurement results of residual stress of the band saw material before shot peening (before shot grain projection) and after shot peening (after shot grain projection) FIGS. 5 and 6 are for explaining waist insertion processing of a band saw material by a conventional roll pressing method. FIG. 5 shows that the band saw material is sandwiched and pressed by a pair of metal rollers. FIG. 6 is a cross-sectional view showing a state, FIG. 6 is a plan view showing a roller orbit of the band saw material, and FIG. 7 is a cross-sectional view for explaining waist insertion processing of the band saw material by a conventional flame heating method. 1 ... band saw material, 2 ... tooth side, 3 ... saw back, 4 ... compressor type shot grain projection device, 5, 7 ... shielding member, 6, 8 ... edge, 13 ... teeth Bottom, W ... Width of band saw material 1, L ... Band-shaped part of band saw material 1 (shot grain projection area of band saw material 1).
Claims (1)
前記帯鋸素材の長手方向に延びる帯状部分にショット粒
を投射することによって、前記帯状部分の長手方向に圧
縮応力を発生せしめ、もって前記縁部の長手方向に引張
内力を付与するようにしたことを特徴とする帯鋸の腰入
れ方法。1. A compressive stress is generated in the longitudinal direction of the band-shaped portion by projecting shot grains to the band-shaped portion adjacent to the tooth flank of the band-saw material and extending in the longitudinal direction of the band-saw material. Therefore, a tensioning force is applied to the edge portion in the longitudinal direction of the edge portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5257087A JPH0635617B2 (en) | 1987-03-06 | 1987-03-06 | How to insert a band saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5257087A JPH0635617B2 (en) | 1987-03-06 | 1987-03-06 | How to insert a band saw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63219522A JPS63219522A (en) | 1988-09-13 |
| JPH0635617B2 true JPH0635617B2 (en) | 1994-05-11 |
Family
ID=12918467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5257087A Expired - Lifetime JPH0635617B2 (en) | 1987-03-06 | 1987-03-06 | How to insert a band saw |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0635617B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0672253B2 (en) * | 1988-06-10 | 1994-09-14 | 電気興業株式会社 | How to insert a band saw |
| JP2021146455A (en) * | 2020-03-19 | 2021-09-27 | 株式会社アマダ | Saw blade and band saw blade, and manufacturing method of saw blade and manufacturing method of band saw blade |
-
1987
- 1987-03-06 JP JP5257087A patent/JPH0635617B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63219522A (en) | 1988-09-13 |
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