JPH0447841B2 - - Google Patents
Info
- Publication number
- JPH0447841B2 JPH0447841B2 JP11008483A JP11008483A JPH0447841B2 JP H0447841 B2 JPH0447841 B2 JP H0447841B2 JP 11008483 A JP11008483 A JP 11008483A JP 11008483 A JP11008483 A JP 11008483A JP H0447841 B2 JPH0447841 B2 JP H0447841B2
- Authority
- JP
- Japan
- Prior art keywords
- numerical control
- control device
- clock
- distributed
- axis
- 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
Links
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
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
- G05B19/416—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 control of velocity, acceleration or deceleration
-
- 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
- G05B2219/33—Director till display
- G05B2219/33088—Clock
-
- 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
- G05B2219/42—Servomotor, servo controller kind till VSS
- G05B2219/42186—Master slave, motion proportional to axis
Landscapes
- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Numerical Control (AREA)
Description
本発明は、工作機械等の各軸ごとの制御装置を
分散して配置してなる分散形数値制御装置に関す
るものである。
The present invention relates to a distributed numerical control device in which control devices for each axis of a machine tool or the like are distributed in a distributed manner.
従来は、１個の数値制御装置が多数軸を一括し
て制御することが行われていたが、この場合同時
制御できる軸数は高々３軸程度である。
すなわち、それ以上の軸数を同時制御しようと
すると、装置が複雑化、肥大化してコスト的、及
び実用性の問題から得策でない。
そこで、各軸ごとに１個の数値制御装置を配置
し、上位の軸制御器が駆動情報を各数値制御装置
に伝送する分散形数値制御装置が開発されつつあ
る。
その際、問題となることは、各軸間の同期をい
かにして実現するかということである。
従来の数値制御装置では、第１図に示すよう
に、数値制御装置１内のクロツクジエネレータ２
のクロツク３（10MHz程度）を分周器４にて
500KHzに分周し、そののち係数器５にて、補間
の種類によつて100〜300kHzのパルス６に分周さ
れ、このパルス６によつて関数発生器７を駆動し
ている。
Conventionally, a single numerical control device has been used to collectively control a large number of axes, but in this case, the number of axes that can be controlled simultaneously is about three at most. That is, if an attempt is made to simultaneously control a greater number of axes, the device becomes complicated and bulky, resulting in cost and practicality problems, which is not a good idea. Therefore, distributed numerical control devices are being developed in which one numerical control device is arranged for each axis, and the upper axis controller transmits drive information to each numerical control device. In this case, the problem is how to achieve synchronization between each axis. In a conventional numerical control device, as shown in FIG.
The clock 3 (approximately 10MHz) is divided by the frequency divider 4.
The frequency is divided to 500 kHz, and then the frequency is divided by a coefficient unit 5 into pulses 6 of 100 to 300 kHz depending on the type of interpolation, and this pulse 6 drives a function generator 7.
分散形数値制御装置を実現するために、単純
に、この従来装置を多数備えるだけでは、クロツ
クジエネレータの誤差が影響して正確な同期運転
は不可能である。
例えば、ｙ軸を受けもつ数値制御装置のクロツ
クがｘ軸を受けもつ数値制御装置のクロツクより
も速い場合、第２図に示すように、目標とする移
動線（一点鎖線）よりｙ軸よりにかたよつた軌跡
（実線）を通過することになり、不測の誤差を生
じることになる。
本発明は、上記の点に鑑みて、全軸の同期運転
を実現できる分散形数値制御装置を提供すること
を目的とする。
If a large number of conventional devices are simply provided in order to realize a distributed numerical control device, accurate synchronized operation will not be possible due to errors in the clock generator. For example, if the clock of the numerical control device that controls the y-axis is faster than the clock of the numerical control device that controls the x-axis, as shown in Fig. The vehicle will pass along a skewed trajectory (solid line), resulting in an unexpected error. In view of the above points, the present invention aims to provide a distributed numerical control device that can realize synchronous operation of all axes.
本発明は、上位の軸制御器から各数値制御装置
に移動情報を伝送するために用いられる伝送クロ
ツクを分周することにより関数発生器の駆動クロ
ツクを送出する手段を設けたものである。
The present invention provides means for transmitting a drive clock for a function generator by frequency-dividing a transmission clock used to transmit movement information from a higher-level axis controller to each numerical control device.
伝送クロツクを分周することにより数値制御装
置の関数発生器の駆動タイミングが完全に一致す
る。
By frequency-dividing the transmission clock, the drive timings of the function generators of the numerical control device are perfectly matched.
第３図に、本発明の具体的実施例を示して説明
する。
図において、８は軸制御器であり、多数の数値
制御装置１（図では１個しか表示していない）に
対し、移動データ９を伝送するものであり、伝送
のための伝送クロツク１０をも、各数値制御装置
に出力している。
各数値制御装置は、前記移動データ９及び伝送
クロツク１０を受信するためのデータ受信部１１
を備える。
データ受信部１１は、移動データを受信して必
要処理を行うとともに、伝送クロツクを分周器４
に入力できるパルス波形に変換する。
このようにすることにより、各数値制御装置の
関数発生器の駆動パルス６は、完全に同期する。
FIG. 3 shows and describes a specific embodiment of the present invention. In the figure, 8 is an axis controller, which transmits movement data 9 to a large number of numerical control devices 1 (only one is shown in the figure), and also includes a transmission clock 10 for transmission. , is output to each numerical control device. Each numerical control device includes a data receiving section 11 for receiving the movement data 9 and the transmission clock 10.
Equipped with. The data receiving section 11 receives the movement data and performs necessary processing, and also transmits the transmission clock to the frequency divider 4.
Convert to a pulse waveform that can be input to By doing so, the drive pulses 6 of the function generators of each numerical control device are completely synchronized.
以上述べたように、本発明によれば、各軸が完
全に同期運転を行う分散形数値制御装置が実現で
きるという効果がある。
As described above, according to the present invention, it is possible to realize a distributed numerical control device in which each axis operates completely synchronously.
第１図は従来例を示す図、第２図は従来技術の
問題を説明する図、第３図は本発明の具体的実施
例を示す図である。
FIG. 1 is a diagram showing a conventional example, FIG. 2 is a diagram explaining problems of the prior art, and FIG. 3 is a diagram showing a specific embodiment of the present invention.
Claims (1)
のデータを受けとり、駆動クロツクによつて、自
装置内の関数発生器で出力したパルスにより自己
に割りあてられた１軸の移動制御を行う数値制御
装置を複数個備える分散形数値制御装置におい
て、 前記各数値制御装置に共通に入力される前記デ
ータの伝送クロツクを分周することにより前記駆
動クロツクを得る手段を設けたことを特徴とする
分散形数値制御装置。[Claims] 1. Data for axis movement issued by one axis command control device is received, and 1 is assigned to the self by a pulse outputted by a function generator within the device itself by a drive clock. In a distributed numerical control device comprising a plurality of numerical control devices for controlling movement of axes, means is provided for obtaining the drive clock by frequency-dividing the data transmission clock commonly input to each of the numerical control devices. A distributed numerical control device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11008483A JPS603007A (en) | 1983-06-21 | 1983-06-21 | Synchronization system of distributed numerical control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11008483A JPS603007A (en) | 1983-06-21 | 1983-06-21 | Synchronization system of distributed numerical control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS603007A JPS603007A (en) | 1985-01-09 |
| JPH0447841B2 true JPH0447841B2 (en) | 1992-08-05 |
Family
ID=14526620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11008483A Granted JPS603007A (en) | 1983-06-21 | 1983-06-21 | Synchronization system of distributed numerical control system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS603007A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06100927B2 (en) * | 1985-06-03 | 1994-12-12 | 株式会社日立製作所 | Programmable controller |
| JPH0782379B2 (en) * | 1987-07-09 | 1995-09-06 | 横河電機株式会社 | Robot controller |
| JP2693635B2 (en) * | 1990-10-11 | 1997-12-24 | ファナック株式会社 | CNC synchronous operation method |
-
1983
- 1983-06-21 JP JP11008483A patent/JPS603007A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS603007A (en) | 1985-01-09 |
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