JPH0438342U

JPH0438342U -

Info

Publication number: JPH0438342U
Application number: JP7995390U
Authority: JP
Priority date: 1990-07-26
Filing date: 1990-07-26
Publication date: 1992-03-31

Description

[Brief explanation of the drawing]

第１図は本考案の位置決め装置の一実施例を示
す側面図、第２図は第１図の−線矢視図、第
３図は第１図の−線矢視図である。１……エアシリンダ、２……摺動台、３……ピ
ストン、４……シリンダチユーブ、４ａ，４ｂ…
…プレート、５……ボールナツト、６……ボール
ネジ軸、７ａ，７ｂ……軸受、８……電磁ブレー
キ、９……ロータリエンコーダ、１０……コント
ローラ。 1 is a side view showing an embodiment of the positioning device of the present invention, FIG. 2 is a view taken along the - line in FIG. 1, and FIG. 3 is a view taken along the - line in FIG. 1...Air cylinder, 2...Sliding base, 3...Piston, 4...Cylinder tube, 4a, 4b...
... plate, 5 ... ball nut, 6 ... ball screw shaft, 7a, 7b ... bearing, 8 ... electromagnetic brake, 9 ... rotary encoder, 10 ... controller.

Claims

[Scope of utility model registration request]

A slide table that is reciprocated by a fluid pressure actuator, a ball nut that is fixed to the slide table in the reciprocating direction, and a ball nut that is screwed onto the ball nut and attached to the body of the fluid pressure actuator so that it can rotate freely and axially. a ball screw shaft supported immovably; an electromagnetic brake provided at one end of the ball screw shaft to brake rotation of the ball screw shaft;
A rotary encoder detects the amount of rotation of the ball screw shaft and outputs an electrical signal, and a signal representing a pre-given target stop position is compared with an electrical signal representing the current position from the rotary encoder, and both signals match. A positioning device comprising: a controller that outputs a braking signal that activates the electromagnetic brake when the electromagnetic brake is activated.