JPS5847908U

JPS5847908U - positioning device

Info

Publication number: JPS5847908U
Application number: JP14321281U
Authority: JP
Inventors: 東　晃義
Original assignee: 三菱電機株式会社
Priority date: 1981-09-26
Filing date: 1981-09-26
Publication date: 1983-03-31

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来の位置決め装置の一例の構成を示す構成図
、第２図はこの考案の一実施例の位置決め装置の構成を
示す構成図、第３図Ａ、　ＢおよびＣはそれぞれこの実
施例のねじ軸始点信号発生装置の出力信号、モータ回転
信号発生装置の出力信号および上記各発生装置の出力信
号が一致した時点の信号を示す図である。図において、１１は架台、１２は台形ねじ軸（ねじ軸）
、１３は載台、１４はパルスモータ、１５はパルス発生
装置、１６はねじ軸始点信号発生装置、１７はモータ回
転信号発生装置、１８はパルス数設定用コンピュータ（
制御装置）、１８Ｃは記憶装置である。Fig. 1 is a block diagram showing the structure of an example of a conventional positioning device, Fig. 2 is a block diagram showing the structure of a positioning device according to an embodiment of this invention, and Figs. 3 A, B, and C respectively show this embodiment. FIG. 6 is a diagram showing a signal at the time when the output signal of the screw shaft start point signal generating device, the output signal of the motor rotation signal generating device, and the output signal of each of the above-mentioned generating devices match. In the figure, 11 is the mount, 12 is the trapezoidal screw shaft (screw shaft)
, 13 is a stage, 14 is a pulse motor, 15 is a pulse generator, 16 is a screw shaft starting point signal generator, 17 is a motor rotation signal generator, 18 is a pulse number setting computer (
control device), 18C is a storage device.

Claims

[Scope of utility model registration request]

A screw shaft attached to the frame so that both ends can rotate,
a mounting table on which the object to be processed is placed, which moves in the axial direction without rotation due to the rotation of the screw shaft, which has a built-in screw nut screwed onto the screw shaft; a pulse motor with an output shaft connected to rotate the screw shaft;
A pulse generator that generates a voltage pulse to rotate the pulse motor, and outputs an axial starting point signal to the pulse generator when the stand is located at the first end of the screw shaft of the mount. A screw shaft start point signal generator outputs a rotation direction start point signal every time the pulse motor rotates once in synchronization with one predetermined voltage pulse among the plurality of voltage pulses that rotate the pulse motor once. a motor rotation signal generator, which corresponds to the number of voltage pulses supplied from the pulse generator to the pulse motor, counting the time when the axial direction start point signal and the rotation direction start point signal match as a counting start point; a storage device that stores the actual measured movement amount of the table, and a desired movement amount of the table is input, and the pulse generator generates the pulse from the pulse generator corresponding to the desired movement amount from the stored contents of the storage device. Find the required number of voltage pulses to be supplied to the motor,
When the number of voltage pulses supplied from the pulse generator to the pulse motor reaches the required number of voltage pulses, the operation of the pulse generator is stopped and the table is controlled to move by the desired amount of movement. A positioning device characterized by comprising a control device.