JPS63174844A - Interference preventer for metalcutting machine - Google Patents
Interference preventer for metalcutting machineInfo
- Publication number
- JPS63174844A JPS63174844A JP32937487A JP32937487A JPS63174844A JP S63174844 A JPS63174844 A JP S63174844A JP 32937487 A JP32937487 A JP 32937487A JP 32937487 A JP32937487 A JP 32937487A JP S63174844 A JPS63174844 A JP S63174844A
- Authority
- JP
- Japan
- Prior art keywords
- spindle
- tool
- lifting
- tip
- distance
- 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
- 230000002265 prevention Effects 0.000 claims description 5
- 238000003754 machining Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000003028 elevating effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- RRLHMJHRFMHVNM-BQVXCWBNSA-N [(2s,3r,6r)-6-[5-[5-hydroxy-3-(4-hydroxyphenyl)-4-oxochromen-7-yl]oxypentoxy]-2-methyl-3,6-dihydro-2h-pyran-3-yl] acetate Chemical compound C1=C[C@@H](OC(C)=O)[C@H](C)O[C@H]1OCCCCCOC1=CC(O)=C2C(=O)C(C=3C=CC(O)=CC=3)=COC2=C1 RRLHMJHRFMHVNM-BQVXCWBNSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/406—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by monitoring or safety
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/49—Nc machine tool, till multiple
- G05B2219/49157—Limitation, collision, interference, forbidden zones, avoid obstacles
Landscapes
- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Auxiliary Devices For Machine Tools (AREA)
Abstract
Description
【発明の詳細な説明】
〈発明の目的〉
〔産業上の利用分野〕
本発明は、テーブルに対して昇降する昇降軸の下端に主
軸を回動自在に設けた加工機において、主軸とテーブル
との干渉を防止する加工機の干渉防止装置に関する。Detailed Description of the Invention [Objective of the Invention] [Industrial Field of Application] The present invention provides a processing machine in which a main spindle is rotatably provided at the lower end of an elevating shaft that moves up and down with respect to a table. The present invention relates to an interference prevention device for a processing machine that prevents interference between machines.
（従来の技術〕
一般に、自動車のボディー等のように複雑な曲面形状を
有する金型の加工にあたっては、プラノミラータイプの
５軸制（’ｌｌ Ｎ Ｃ加工機が広く利用されている。(Prior Art) In general, plano-mirror type five-axis NC processing machines are widely used for processing molds having complex curved shapes such as automobile bodies.
この種の加工機としては、例えば第６図に示す如く、凹
型コラム１に対してワークＷをＲ置したテーブル２が前
後方向（Ｘ軸方向）へ、クロスレ−ル３が上下方向（Ｘ
軸方向）へそれぞれ移動自在に設けられているとともに
、クロスレール３にサドル４が前記クロスレール３およ
びテーブル２の移動方向に対してそれぞれ直交する方向
（Ｙ軸方向）へ移動自在に、サドル４の中央に垂直に支
持されたラム５の下端に旋回軸６がＺ軸線を中心に水平
方向へ回動自在に、この旋回軸６の下端に主軸ヘッド７
が水平な支軸８を介して上下方向へ回動自在にそれぞれ
設けられた、構造のものが知られている。そして、主軸
ヘッド７には、工具９を有する主軸１０が回転自在に装
着されている。In this type of processing machine, for example, as shown in FIG.
The saddle 4 is provided on the cross rail 3 so as to be movable in the direction (Y-axis direction) perpendicular to the movement direction of the cross rail 3 and the table 2. At the lower end of the ram 5, which is supported vertically at the center of
A structure is known in which the shafts are respectively provided so as to be freely rotatable in the vertical direction via horizontal support shafts 8. A main spindle 10 having a tool 9 is rotatably mounted on the main spindle head 7.
従来、このような加工機において、Ｘ軸方向のストロー
クの下降限は、加工ストロークを最大にするために、第
７図に示す如く主軸ヘンドアを水平にした状態でテーブ
ル２と主軸ＩＯに装着された工具９とが互いに干渉する
手前のところで決定されている。すると、主軸へノド７
が垂直な状態から成る角度範囲内にあるとき、クロスレ
ール３をＸ軸方向へ下降させると、Ｘ軸方向のストロー
クが下降限に達する前に工具９とテーブル２とが干渉す
るという不具合が生しる。Conventionally, in such processing machines, in order to maximize the machining stroke, the lower limit of the stroke in the X-axis direction is set by attaching the spindle hend door to the table 2 and the spindle IO in a horizontal state as shown in Fig. 7. The determination is made at a position before the two tools 9 interfere with each other. Then, the throat 7 to the main shaft
If the cross rail 3 is lowered in the X-axis direction when the cross-rail 3 is within a vertical angle range, the tool 9 and table 2 will interfere with each other before the stroke in the Sign.
そこで、手動運転の場合には作業者の注意に頼らざるを
得ないが、数値制御等の場合には加工テープを作るとき
にこの干渉を考慮することにしている。しかしながら、
時としてテープ作成時の加工ミスによって、機械の損傷
や事故が発生することがあった。Therefore, in the case of manual operation, it is necessary to rely on the operator's attention, but in the case of numerical control, etc., this interference is taken into account when making the processing tape. however,
Occasionally, machining errors during tape production could result in machine damage or accidents.
本発明の目的は、昇降軸の加工ストロークを減縮するこ
となく、主軸とテーブルとの干渉を防止する加工機の干
渉防止装置を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide an interference prevention device for a processing machine that prevents interference between a main spindle and a table without reducing or reducing the machining stroke of an elevating axis.
（発明の構成〉
〔問題点を解決するための手段〕
そのため、本発明の構成は、テーブルに対して昇降する
昇降軸の下端に、工具を装着した主軸を昇降軸の昇降方
向と直交する軸を支点として回動自在に設け、かつ、昇
降軸の下端とテーブルとが干渉する手前までを昇降軸の
下降限ストローク量とした加工機において、前記主軸の
ストローク量を検出する位置検出器と、前記主軸の回動
角度を検出する角度検出器と、前記主軸の回動中心から
工具先端までの長さデータ、主軸の回動中心から昇降軸
の下端までの距離データおよび前記下降限ストローク量
を人力する定数設定部と、前記角度検出器の角度データ
と前記長さデータとから主軸の回動中心から工具先端ま
での昇降軸方向の距離を求め、この距Ｍが前記距離デー
タより大きいとき、両距離の差を前記下降限ストローク
量から差し引いた値まで昇降軸のストローク量が達した
ことを条件として停止指令を出力する演算制御部と、を
それぞれ設けたことを特徴とする。(Structure of the Invention) [Means for Solving the Problems] Therefore, the structure of the present invention is such that the main shaft, on which the tool is attached, is connected to the lower end of the lifting shaft that moves up and down with respect to the table, and the main shaft is attached to the shaft that is perpendicular to the lifting direction of the lifting shaft. A position detector for detecting the stroke amount of the main spindle in a processing machine that is rotatably provided with the main shaft as a fulcrum, and has a lower stroke limit for the elevating shaft up to the point before the lower end of the elevating shaft interferes with the table; An angle detector that detects the rotation angle of the spindle, length data from the rotation center of the spindle to the tip of the tool, distance data from the rotation center of the spindle to the lower end of the lifting shaft, and the lowering limit stroke amount. The distance in the vertical axis direction from the center of rotation of the spindle to the tip of the tool is determined from the manually operated constant setting section, the angle data of the angle detector, and the length data, and when this distance M is larger than the distance data, The present invention is characterized in that it is provided with an arithmetic control section that outputs a stop command on the condition that the stroke amount of the vertical axis reaches a value obtained by subtracting the difference between the two distances from the lower limit stroke amount.
予め、定数設定部によって、主軸の回動中心から工具先
端までの長さデータ、主軸の回動中心から昇降軸の下端
までの距離データおよび下降限ストローク量を人力して
おけば、演算制御部は、角度検出器で検出した主軸の回
動角度と前記長さデータとから主軸の回動中心から工具
先端までの昇降軸方向の距離を求め、この距離が前記距
離データより大きいとき、つまり工具先端が昇降軸の下
ｔ１より低いとき、昇降軸の下端から工具先端までの距
離を下降限ストローク量から差し引いた値まで昇降軸の
ストロークが達したことを条件として停止指令を出力す
る。If you manually input the length data from the spindle rotation center to the tool tip, the distance data from the spindle rotation center to the lower end of the lifting axis, and the lowering limit stroke amount using the constant setting section in advance, the calculation control section calculates the distance in the lifting axis direction from the rotation center of the spindle to the tip of the tool from the rotation angle of the spindle detected by the angle detector and the length data, and when this distance is greater than the distance data, that is, the tool When the tip is lower than the lower end t1 of the lifting axis, a stop command is output on condition that the stroke of the lifting axis reaches a value obtained by subtracting the distance from the lower end of the lifting axis to the tool tip from the lower limit stroke amount.
従って、昇降軸の加工ストロークを減縮することなく、
主軸とテーブルとの干渉を防止することができる。Therefore, without reducing the machining stroke of the lifting axis,
Interference between the spindle and the table can be prevented.
第３図は５軸制御ＮＣ加工機の正面を、第４１ｆｆｉは
その側面をそれぞれ示している。これらの図において、
ヘース１１には、テーブル１２が前後方向（Ｘ軸方向）
へ移動自在に設けられているとともに、そのテーブル１
２の両側に凹型コラム１３が固定されている。凹型コラ
ム１３の水平ビームにはサドル１４がモータ１５の駆動
によって左右方向（Ｙ軸方向）へ、サドル１４に゛はラ
ム１６がモータ１７の駆動によって上下方向（Ｘ軸方向
）へ、それぞれ移動自在に設けられている。前記ラム１
６の下端には、旋回軸１８がＺ軸線を中心として水平方
向へ回動自在に設けられている。旋回軸１８には、主軸
ヘッド１９が水平な支軸２０を支点として上下方向へ回
動自在に設けられている。FIG. 3 shows the front of the 5-axis controlled NC processing machine, and No. 41ffi shows its side. In these figures,
The table 12 is attached to the heath 11 in the front and back direction (X-axis direction).
Table 1
Concave columns 13 are fixed on both sides of 2. A saddle 14 is mounted on the horizontal beam of the concave column 13, and a ram 16 is movable in the horizontal direction (Y-axis direction) by driving a motor 15, and a ram 16 is movable vertically (X-axis direction) by driving a motor 17. It is set in. Said ram 1
A pivot shaft 18 is provided at the lower end of the rotor 6 so as to be rotatable in the horizontal direction about the Z-axis. A main shaft head 19 is provided on the pivot shaft 18 so as to be freely rotatable in the vertical direction about a horizontal support shaft 20 as a fulcrum.
主軸ヘッド１９には、先端に工具２２を有する主軸２３
が回転自在に装着されている。The spindle head 19 includes a spindle 23 having a tool 22 at its tip.
is rotatably mounted.
第１図は上記加工機の干渉防止装置を示している。同図
において、演算制御部６１には、角度検出器６２によっ
て検出された主軸ヘッド１９の回動角度データθ、位置
検出器６３によって検出されたラム１６の下降ストロー
ク量ＺＳおよび定数５ 設定部６４からの定数データが
それぞれ入力されている。定数設定部６４からは、第２
図に示す如く、主軸へラド１９の回動中心から工具２２
の先端までの長さデータし、主軸へラド１９の回動中心
から旋回軸１８の下端までの距離データＨのほかに、主
軸２３に装着された工具２２の先端の高さ位置が少なく
とも旋回軸１８の下端以上の状態において、旋回軸１８
とテーブル１２とが干渉する手前の下降限までのラム１
６の下降限ストロークＩＺＬがそれぞれ入力されている
。これにより、演算制御部６１は、第５図に示すフロー
チャートに従って処理を行う。FIG. 1 shows an interference prevention device for the processing machine. In the figure, an arithmetic control unit 61 includes rotation angle data θ of the spindle head 19 detected by an angle detector 62, a downward stroke amount ZS of the ram 16 detected by a position detector 63, and a constant 5 setting unit 64. Constant data from is input respectively. From the constant setting section 64, the second
As shown in the figure, from the rotation center of the Rad 19 to the main shaft, the tool 22
In addition to the distance data H from the center of rotation of the rad 19 to the lower end of the pivot shaft 18, the height position of the tip of the tool 22 mounted on the spindle 23 is at least as high as the pivot shaft. When the rotation axis 18 is above the lower end of the
Ram 1 to the lowering limit before interference with table 12
6 lower limit strokes IZL are each input. Thereby, the arithmetic control section 61 performs processing according to the flowchart shown in FIG.
すなわち、一定時間間隔毎に角度データθを取り込み、
続いてその角度データθと前記距＃ｌＬとから主軸へラ
ド１９の回動中心から工具２２の先端までの垂直路＃Ｒ
ｈを求めた後、その垂直距離りが前記距離Ｈ以下である
か否かを判断する。ここで、ｈ≦Ｈであれば、つまり工
具２２の先端高さ位置が旋回軸１８の下端以上であれば
、ラム１６の下降ストロークｇｚｓ（ここでは、旋回軸
１日の下端までのストローク量）が下降限ストロークｆ
ｉＺＬに達していないこと（ＺＳ＜ＺＬ）を条件として
メインルーチンへ復帰する。In other words, the angle data θ is taken in at regular time intervals,
Next, from the angle data θ and the distance #lL, a vertical path #R from the center of rotation of the rad 19 to the tip of the tool 22 is determined from the angle data θ and the distance #lL.
After determining h, it is determined whether the vertical distance is less than or equal to the distance H. Here, if h≦H, that is, if the height position of the tip of the tool 22 is above the lower end of the rotating shaft 18, then the downward stroke gzs of the ram 16 (here, the stroke amount to the lower end of the rotating shaft in 1 day) is the lower limit stroke f
The process returns to the main routine on the condition that iZL has not been reached (ZS<ZL).
一方、ｈ≦Ｈでなければ、つまり工具２２の先端高さ位
置が旋回軸１８の下端より低ければ、垂直路１ｌｉＩｈ
と前記距離Ｈとの差Δｈを求めた後、ラム１６の下降ス
トロークｌｚｓが下降限ストロークＩＺＬから差Δｈを
引いた値に達していないこと（ＺＳ＜ＺＬ−Δｈ）を条
件としてメインルーチンへ復帰する。ここで、ＺＳ＜Ｚ
Ｌ−Δｈでなければ、またはＺＳ＜ＺＬでなければ、機
械停止Ｉ旨令を出力してメインルーチンへ復帰する。On the other hand, if h≦H, that is, if the height position of the tip of the tool 22 is lower than the lower end of the pivot shaft 18, the vertical path 1liIh
After calculating the difference Δh between and the distance H, return to the main routine on the condition that the downward stroke lzs of the ram 16 has not reached the value obtained by subtracting the difference Δh from the lower limit stroke IZL (ZS<ZL−Δh). do. Here, ZS<Z
If it is not L-Δh or if ZS<ZL, a machine stop I instruction is output and the process returns to the main routine.
従って、本実施例によれば、工具２２の先端高さ位置を
求め、この高さ位置が旋回軸１８の下端以上であれば、
下降限ストロークＩＺＬまでラム１６を下降させること
ができ、一方、工具２２の先端高さ位置が旋回軸１８の
下端より低ければ、旋回軸１８の下端から工具２２の先
端高さ位置までの距離つまりΔｈを下降限ストロークｊ
ｌＺＬから引いた値までラム１６を下降させることがで
きる。よって、ラム１６のストロークを減縮することな
く、主軸２３とテーブル１２との干渉を防止することが
できる。Therefore, according to this embodiment, the height position of the tip of the tool 22 is determined, and if this height position is equal to or higher than the lower end of the pivot shaft 18,
If the ram 16 can be lowered to the lower limit stroke IZL, and on the other hand, the height position of the tip of the tool 22 is lower than the lower end of the pivot shaft 18, the distance from the lower end of the pivot shaft 18 to the height position of the tip of the tool 22, i.e. Δh is the lowering limit stroke j
The ram 16 can be lowered to a value less than lZL. Therefore, interference between the main shaft 23 and the table 12 can be prevented without reducing or reducing the stroke of the ram 16.
〈発明の効果〉
以上の通り、本発明によれば、昇降軸の加工ストローク
を減縮することなく、主軸とテーブルとの干渉を防止す
ることが可能な加工機の干渉防止装置を提供することが
できる。<Effects of the Invention> As described above, according to the present invention, it is possible to provide an interference prevention device for a processing machine that can prevent interference between the main spindle and the table without reducing or reducing the machining stroke of the lifting axis. can.
第１図は本発明の一実施例を示すブロック図、第２図は
その要部を示す図、第３図は加工機を示す正面図、第４
図はその側面図、第５図はフローチャート、第６図およ
び第７図は従来の加工機を示す図である。
１２・・・テーブル、１６・・・昇降軸としてのラム、
１９・・・主軸ヘッド、２２・・・工具、２３・・・主
軸、６１・・・演算制御部、６２・・・角度検出器、６
３・・・位置検出器、６４・・・定数設定部。Fig. 1 is a block diagram showing one embodiment of the present invention, Fig. 2 is a diagram showing its main parts, Fig. 3 is a front view showing the processing machine, and Fig. 4 is a block diagram showing an embodiment of the present invention.
The figure is a side view, FIG. 5 is a flowchart, and FIGS. 6 and 7 are diagrams showing a conventional processing machine. 12...Table, 16...Ram as a lifting axis,
19... Spindle head, 22... Tool, 23... Spindle, 61... Arithmetic control section, 62... Angle detector, 6
3...Position detector, 64...Constant setting section.
Claims (1)
を装着した主軸を昇降軸の昇降方向と直交する軸を支点
として回動自在に設け、かつ、昇降軸の下端とテーブル
とが干渉する手前までを昇降軸の下降限ストローク量と
した加工機において、前記主軸のストローク量を検出す
る位置検出器と、 前記主軸の回動角度を検出する角度検出器と、前記主軸
の回動中心から工具先端までの長さデータ、主軸の回動
中心から昇降軸の下端までの距離データおよび前記下降
限ストローク量を入力する定数設定部と、 前記角度検出器の角度データと前記長さデータとから主
軸の回動中心から工具先端までの昇降軸方向の距離を求
め、この距離が前記距離データより大きいとき、両距離
の差を前記下降限ストローク量から差し引いた値まで昇
降軸のストローク量が達したことを条件として停止指令
を出力する演算制御部と、 をそれぞれ設けたことを特徴とする加工機の干渉防止装
置。(1) A main shaft equipped with a tool is installed at the lower end of the lifting shaft that lifts and lowers with respect to the table so that it can rotate freely around an axis perpendicular to the lifting direction of the lifting shaft, and the lower end of the lifting shaft and the table interfere. In the processing machine, the lowering stroke limit of the lifting axis is set to the point before the lifting axis, and the processing machine includes a position detector that detects the stroke amount of the main spindle, an angle detector that detects the rotation angle of the main spindle, and a rotation center of the main spindle. a constant setting section for inputting length data from the center to the tool tip, distance data from the rotation center of the spindle to the lower end of the lifting shaft, and the lowering limit stroke amount; and the angle data of the angle detector and the length data. Find the distance in the direction of the lifting axis from the center of rotation of the spindle to the tip of the tool, and if this distance is greater than the distance data, the stroke amount of the lifting axis is calculated by subtracting the difference between both distances from the lowering limit stroke amount. An interference prevention device for a processing machine, characterized in that it is provided with: an arithmetic control section that outputs a stop command on the condition that the stop command is reached;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32937487A JPS63174844A (en) | 1987-12-25 | 1987-12-25 | Interference preventer for metalcutting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32937487A JPS63174844A (en) | 1987-12-25 | 1987-12-25 | Interference preventer for metalcutting machine |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23074483A Division JPS60123245A (en) | 1983-12-06 | 1983-12-06 | Interference preventer for working machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63174844A true JPS63174844A (en) | 1988-07-19 |
| JPH0129657B2 JPH0129657B2 (en) | 1989-06-13 |
Family
ID=18220732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32937487A Granted JPS63174844A (en) | 1987-12-25 | 1987-12-25 | Interference preventer for metalcutting machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63174844A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9411330B2 (en) | 2011-01-26 | 2016-08-09 | Mitsubishi Electric Corporation | Numerical control device |
-
1987
- 1987-12-25 JP JP32937487A patent/JPS63174844A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9411330B2 (en) | 2011-01-26 | 2016-08-09 | Mitsubishi Electric Corporation | Numerical control device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0129657B2 (en) | 1989-06-13 |
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