JPS62157717A - Slip detecting device of band saw blade - Google Patents
Slip detecting device of band saw bladeInfo
- Publication number
- JPS62157717A JPS62157717A JP29824785A JP29824785A JPS62157717A JP S62157717 A JPS62157717 A JP S62157717A JP 29824785 A JP29824785 A JP 29824785A JP 29824785 A JP29824785 A JP 29824785A JP S62157717 A JPS62157717 A JP S62157717A
- Authority
- JP
- Japan
- Prior art keywords
- band saw
- saw blade
- driven wheel
- slip
- wheel
- 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.)
- Granted
Links
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
- B23D55/00—Sawing machines or sawing devices working with strap saw blades, characterised only by constructional features of particular parts
- B23D55/06—Sawing machines or sawing devices working with strap saw blades, characterised only by constructional features of particular parts of drives for strap saw blades; of wheel mountings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sawing (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、帯鋸＠（；おける帯鋸刃のスリップ検出装置
（−関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a slip detection device for a band saw blade in a band saw.
従来の技術
従来の帯鋸刃のスリップ検出装置は特公昭４７−５１３
１７号公報（：示さｎ２ものが知らｎている。Conventional technology The conventional band saw blade slip detection device was developed by Japanese Patent Publication No. 47-513.
Publication No. 17 (: 2 things shown are known.
この従来の本のは、従動ホイール側の回転数の変化を検
出、その値が予め設定さｎた値以下（−低下した場合（
ニー報あるいは停止信号を出すようになっていた。This conventional book detects changes in the rotation speed of the driven wheel, and if the value falls below a preset value (-)
It was supposed to issue a knee warning or a stop signal.
発明が解決しようとする問題点
上記従来の装置にあっては、従動ホイールの回転数の変
化だけしか検出していなかつｍ７ｔｌ−め、駆動ホイー
ルに連結さｎ２駆動モータの回転速度が過電負荷により
低下した場合も鋸刃のスリップとして検出してしまい、
該動作しやすかった。まｔ被切断材の材質により駆動モ
ータと駆動ホイールとの増速比をプーリで変えているが
、上記従来のものにあっては、上記増速比を変えるとと
ζ：検出設定値を変える必要があり、めんどうであつ几
。Problems to be Solved by the Invention The conventional device described above only detects changes in the rotation speed of the driven wheel, and the rotation speed of the drive motor connected to the drive wheel changes due to an overcurrent load. Even if it drops, it will be detected as saw blade slipping,
It was easy to operate. The speed increase ratio between the drive motor and the drive wheel is changed using a pulley depending on the material of the material to be cut, but in the conventional type mentioned above, when the speed increase ratio is changed, the detection setting value is changed. It's necessary, troublesome and difficult.
問題点を解決するための手段及び作用
本発明は上記のこと（：かんがみなさｆ′Ｌｔもので、
駆動モータの回転数変動に対しては不感となり、高精度
（−帯鋸刃のスリップを検出することができ、ま几取扱
いが極めて簡素化することができるよう（：した帯鋸刃
のスリラグ検出装置を提供することを目的とするもので
、その構成は、駆動ホイールと従動ホイールのそｎぞｎ
の回転速度を検出する速度検出手段と、駆動ホイールに
対する帯鋸刃のスリップ率を設定する設定手段と、上記
両速度検出手段よりの各検出値より実際のスリップ率を
演算する演算手段と、この演算手段での演算結果と設定
手段による設定値との大小を比較する比較手段と、この
比較手段による比較値が設定値以上Ｃ二なつｔときに警
報等の信号を発生する出力手段とからなっており、駆動
ホイールと従動ホイールの相対回転数から直接帯鋸刃の
スリップ率を演算し、この演算値と設定値とを比較し、
その結果（−よＴ）警報あるいは停止信号が発せら几る
。Means and Effects for Solving the Problems The present invention is based on the above-mentioned matters.
It is insensitive to fluctuations in the rotation speed of the drive motor, and can detect band saw blade slippage with high accuracy, making handling of the machine extremely simple. The purpose of this wheel is to provide a drive wheel and a driven wheel.
a speed detection means for detecting the rotational speed of the band saw blade, a setting means for setting the slip ratio of the bandsaw blade with respect to the drive wheel, a calculation means for calculating the actual slip ratio from each detected value from both of the speed detection means, and this calculation. It consists of a comparison means for comparing the magnitude of the calculation result by the means and a set value by the setting means, and an output means for generating a signal such as an alarm when the comparison value by the comparison means is greater than or equal to the set value. Therefore, the slip rate of the bandsaw blade is calculated directly from the relative rotation speed of the driving wheel and the driven wheel, and this calculated value is compared with the set value.
As a result (-yoT) no alarm or stop signal is issued.
実施例 本発明の実施例を図面に基づいて説明する。Example Embodiments of the present invention will be described based on the drawings.
第３図は帯鋸盤の一例である横型金切帯鋸盤を示し、電
動機（図示せず）等を内装した台盤１；二枢着したハウ
ジング２は油圧シリング３で昇降さｎｌその左右端部（
−内装した駆動、従動ホイール４，５間に帯鋸刃６を装
架すると共（＝、このハウジング２の略中央部上部に電
気、油圧系統の制御装置を内蔵し友制御箱７が設けであ
る。Fig. 3 shows a horizontal metal-cutting bandsaw machine, which is an example of a bandsaw machine, in which a base plate 1 is equipped with an electric motor (not shown), etc.; a housing 2, which is connected with two pivots, is raised and lowered by a hydraulic cylinder 3; (
- A band saw blade 6 is installed between the drive and driven wheels 4 and 5 installed inside the housing 2 (=, a companion control box 7 is provided with electric and hydraulic system control devices built in approximately at the upper center of the housing 2). .
第１図に上記駆動、従動ホイール４．５の一方、例えば
従動ホイール部分の断面を示すもので％ ９１”ｌ’ハ
ウジング２に対して帯鋸刃６の張り方向（：移動可能（
；かつ回転不能（：支持さｎ−た従動ホイール軸であり
、この従動ホイール軸９に軸受１０を介して従動ホイー
ル５が支承さ几ている。従動ホイール軸９にはロータリ
エンコーダ１１が固着さ几ている。そしてこのロータリ
エンコーダ１１が従動ホイール５と一体く一回転スルカ
バー１２（：アングル１３にて連結されており、従動ホ
イール５の回転数がロータリエンコーダ１１にて出力パ
ルスとして検出さｎるようになっている。ａ−タリエン
コーダ１１と従動ホイール５とは歯車等の増減速機を介
して連結してもよい。FIG. 1 shows a cross section of one of the driving and driven wheels 4.5, for example, the driven wheel portion.
; and is a non-rotatable driven wheel shaft. A driven wheel 5 is supported on this driven wheel shaft 9 via a bearing 10. A rotary encoder 11 is fixed to the driven wheel shaft 9. The rotary encoder 11 is integrally connected to the driven wheel 5 through a one-turn cover 12 (angle 13), and the rotational speed of the driven wheel 5 is detected as an output pulse by the rotary encoder 11. The a-tary encoder 11 and the driven wheel 5 may be connected via an increase/decrease gear such as a gear.
上記構成は従動ホイール部（：おけるものであるが、駆
動ホイール４においても全く同様（ニジて駆動ホイール
４の回転数がロータリエンコーダにて出力パルスとして
検出されるようになっている。Although the above configuration is for the driven wheel section, it is exactly the same for the drive wheel 4 (the rotational speed of the drive wheel 4 is detected as an output pulse by a rotary encoder).
第２図は駆動、従動ホイール４，５の各回転数から帯鋸
刃６のスリップ率を演算し、こルが設定スリップ率以上
（；なつ之場合（−警報あるいは停止信号を出すための
アナログ回路を示すもので、１４は設定スリップ率８ｏ
を出力するスリップ率設定器、１５は駆動ホイール
４側のロー ｐ ＴＪ ｘ ｙ コーダエＧからの信号
をこ几の周波数に比例した電圧ＮＤ （＝変換する第１
のＦ／Ｖコンバータ、１７は従動ホイール５側のロータ
リエンコーダ１１からのパルス信号をこ几の周波数（−
比例し九電圧Ｎｓに変換する第２のＦ／Ｖコ／バータで
ある。上記両寛圧ＮＤ％Ｎｓ［両ホイール４，５の回転
数に相浩する。１８は第１のＦ／Ｖコンバータ１５から
の出力電圧ＮＤと設定スリップ率Ｓｏ を乗算して８
ｏ＊ＮＤの信号を出力する増幅器、１９に両Ｆ／Ｖコン
バータ１５，１７の両出力電圧ＮＤ、Ｎｓの差を演算し
て（ＮＤ−Ｎｓ）を出力する減算器、２０は上記両信号
５ｏ−ＮＤ と（ＮＤ−Ｎｓ）を比較する比較器、２
１はこの比較器２０の出力信号がＮＤ−Ｎｓ？５ｏ−Ｎ
Ｄとなつｔとき（＝駆動して出力信号を警報器あるいに
停止装置に出力するドライバ回路である。Figure 2 shows the calculation of the slip rate of the band saw blade 6 from the respective rotational speeds of the drive and driven wheels 4 and 5, and if the slip rate exceeds the set slip rate (; 14 indicates the set slip rate of 8o
A slip ratio setting device 15 outputs a signal from the drive wheel 4 side low p TJ
The F/V converter 17 converts the pulse signal from the rotary encoder 11 on the driven wheel 5 side to this frequency (-
A second F/V co/verter converts into a proportional nine voltage Ns. The above-mentioned both relaxation pressures ND%Ns [corresponds to the rotational speed of both wheels 4 and 5. 18 is the product of the output voltage ND from the first F/V converter 15 and the set slip ratio So.
19 is an amplifier that outputs the signal o*ND, 19 is a subtracter that calculates the difference between the output voltages ND and Ns of both F/V converters 15 and 17 and outputs (ND-Ns), and 20 is a subtracter that outputs the above-mentioned two signals 5o. A comparator that compares -ND and (ND-Ns), 2
1 is the output signal of this comparator 20 ND-Ns? 5o-N
When t becomes D, it is a driver circuit that drives and outputs an output signal to an alarm or a stop device.
上記構成における作用を説明する。The operation of the above configuration will be explained.
帯鋸刃６Ｔｒｉ従勤ホイール５を移蛎することにより適
宜（：緊張さ几る。この状態で駆動ホイール４を駆動す
ること（−より帯鋸刃６（＝よって従動ホイール５が従
動回転さｆ′Ｌ％このときの帯鋸刃６の循環移動によっ
て台盤１上にセットさ几ｔワークが少しずつ切削さ几て
切断される。By moving the band saw blade 6Tri and the driven wheel 5, the tension is reduced as appropriate.In this state, driving the drive wheel 4 causes the band saw blade 6 (=Therefore, the driven wheel 5 rotates f'L At this time, the workpiece set on the base 1 is cut little by little by the circular movement of the band saw blade 6.
上記切断作業において、帯鋸刃６に伸びが生じ、あるい
は過電切削により帯鋸刃６が駆動ホイール４１ｍ対して
スリップが生じると、従動ホ（−＃５（ｍｌｏロータリ
エンコーダ１１からのパルス信号の周波数が駆動側のそ
几より減少し、従って各’Ｆ／Ｖコンバータ１５，１７
からの出力電圧ＮＤ 、 Ｎｓ に差が生じる。このと
きのスリップ率Ｓは
ＮＤ −Ｎｓ
Ｓ−□ ・・・・・・ （１１
Ｄ
（＝よって定義さｎる。このスリップ率Ｓがスリップ設
定器１４（：て設定さｎｅｔ設定値ＳＯ以上になると、
こｎが比較器２０にての演
算がなさ几、ドライバ回路２１から警報あるいは停止信
号が出力さ几る。In the above cutting operation, if the band saw blade 6 stretches or if the band saw blade 6 slips with respect to the drive wheel 41m due to overcurrent cutting, the frequency of the pulse signal from the driven ho (-#5 (mlo rotary encoder 11) The capacity of each 'F/V converter 15, 17 is reduced from that of the drive side.
A difference occurs in the output voltages ND and Ns from the . The slip rate S at this time is ND -Ns S-□... Then,
When the comparator 20 performs no calculation, the driver circuit 21 outputs an alarm or a stop signal.
上記作用は駆動ホイール４に対して帯鋸刃６が所定以上
スリップしｆｃ場合であり１重切削により駆動ホイール
４を駆動するモータの回転数が低下した場合には、帯鋸
刃６にスリップが生じない限りドライバ回路に作動しな
い。The above action occurs when the band saw blade 6 slips more than a predetermined amount fc with respect to the drive wheel 4. If the rotation speed of the motor that drives the drive wheel 4 decreases due to single cutting, no slip occurs in the band saw blade 6. As long as the driver circuit does not operate.
また上記実施ではアナログ回路を用い比例を示しｔが、
カウンタ等を用いたデジタル回路を用いてもよい。In addition, in the above implementation, an analog circuit is used to show proportionality, and t is
A digital circuit using a counter or the like may also be used.
発明の効果
本光明によ几ば、駆動ホイール４と従動ホイール５の相
対速度差（−二り帯鋸刃６のスリップが検出さｎるよう
にしたから、駆動ホイール４（；連結さｎ７Ｈ駆動モー
タの回転速度が退京負荷１：より低下した場合等、上記
駆動モータの回転数変動に対しては不感となり、高精度
に帯鋸刃６のスリップを検出することができる。まｔ検
出設定値ｒｊ：駆動モータの回転数の変化に対しても変
える必要がなく、スリップ検出装置の取扱いが極めて簡
素化することができる。Effects of the Invention According to the present invention, since the relative speed difference between the drive wheel 4 and the driven wheel 5 (-) is such that the slip of the band saw blade 6 is detected, the drive wheel 4 (; connected to the 7H drive motor When the rotational speed of the band saw blade 6 is lower than the withdrawal load 1:, etc., it becomes insensitive to the rotational speed fluctuation of the drive motor, and the slip of the band saw blade 6 can be detected with high accuracy. : There is no need to change the number of rotations of the drive motor, and the handling of the slip detection device can be extremely simplified.
図面は本発明の実施例を示すもので、第１図は要部の断
面図、第２図にアナログ回路を示すブロック線図、第３
図に帯鋸盤の正面図である。
４は駆動ホイール、５は従動ホイール、６に゛帯鋸刃。The drawings show an embodiment of the present invention, and FIG. 1 is a sectional view of the main parts, FIG. 2 is a block diagram showing an analog circuit, and FIG. 3 is a block diagram showing an analog circuit.
The figure is a front view of a bandsaw machine. 4 is a driving wheel, 5 is a driven wheel, and 6 is a band saw blade.
Claims (1)
刃６を循環してワークを切断するようにした帯鋸盤にお
いて、駆動ホイール４と従動ホイール５のそれぞれの回
転速度を検出する速度検出手段と、駆動ホイール４に対
する帯鋸刃６のスリップ率を設定する設定手段と、上記
両速度検出手段よりの各検出値より実際のスリップ率を
演算する演算手段と、この演算手段での演算結果と設定
手段による設定値との大小を比較する比較手段と、この
比較手段による比較値が設定値以上になつたときに警報
等の信号を発生する出力手段とからなることを特徴とす
る帯鋸刃のスリップ検出装置。In a band saw machine that cuts a workpiece by circulating a band saw blade 6 mounted between a driving wheel 4 and a driven wheel 5, speed detection means detects the respective rotational speeds of the driving wheel 4 and the driven wheel 5. , a setting means for setting the slip ratio of the bandsaw blade 6 with respect to the drive wheel 4, a calculation means for calculating the actual slip ratio from each detected value from both of the speed detection means, and the calculation results and settings of the calculation means. A band saw blade slip comprising a comparison means for comparing the magnitude with a set value by the means, and an output means for generating a signal such as an alarm when the comparison value by the comparison means exceeds the set value. Detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60298247A JPH0712576B2 (en) | 1985-12-28 | 1985-12-28 | Band saw blade slip detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60298247A JPH0712576B2 (en) | 1985-12-28 | 1985-12-28 | Band saw blade slip detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62157717A true JPS62157717A (en) | 1987-07-13 |
| JPH0712576B2 JPH0712576B2 (en) | 1995-02-15 |
Family
ID=17857141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60298247A Expired - Lifetime JPH0712576B2 (en) | 1985-12-28 | 1985-12-28 | Band saw blade slip detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0712576B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0239819U (en) * | 1988-09-10 | 1990-03-16 | ||
| JP2019155736A (en) * | 2018-03-13 | 2019-09-19 | 島根県 | Bandsaw device |
| JP2020196122A (en) * | 2019-05-31 | 2020-12-10 | 高聖精密機電股▲分▼有限公司Ｃｏｓｅｎ Ｍｅｃｈａｔｒｏｎｉｃｓ Ｃｏ．，Ｌｔｄ | Health diagnosis system of portable machine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5226302A (en) * | 1975-08-25 | 1977-02-26 | Kokan Mining Co Ltd | Method of preeheating pellet |
-
1985
- 1985-12-28 JP JP60298247A patent/JPH0712576B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5226302A (en) * | 1975-08-25 | 1977-02-26 | Kokan Mining Co Ltd | Method of preeheating pellet |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0239819U (en) * | 1988-09-10 | 1990-03-16 | ||
| JP2019155736A (en) * | 2018-03-13 | 2019-09-19 | 島根県 | Bandsaw device |
| JP2020196122A (en) * | 2019-05-31 | 2020-12-10 | 高聖精密機電股▲分▼有限公司Ｃｏｓｅｎ Ｍｅｃｈａｔｒｏｎｉｃｓ Ｃｏ．，Ｌｔｄ | Health diagnosis system of portable machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0712576B2 (en) | 1995-02-15 |
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