JPS6274949U

JPS6274949U -

Info

Publication number: JPS6274949U
Application number: JP16558585U
Authority: JP
Priority date: 1985-10-28
Filing date: 1985-10-28
Publication date: 1987-05-13

Description

[Brief explanation of the drawing]

第１図はこの考案の位置割出装置の一実施例の
横断面図、第２図は前図の部分拡大図、第３図は
前図―線での断面図、第４図は従来例の全体
回路図、第５図は従来例の横断面図、第６図は前
図の部分拡大図、第７図は前図―線での断面
図である。１……ポンプライン、２……タンクライン、３
……流量制御弁、５……液圧モータ、７……カム
、９……ローラ、１０……スプール、１１……凹
部、２１……スプール摺動室、２９……シリンダ
室、３１……ピストン部、３２……前室、３３…
…後室。 Figure 1 is a cross-sectional view of one embodiment of the position indexing device of this invention, Figure 2 is a partially enlarged view of the previous figure, Figure 3 is a sectional view taken along the line from the front figure, and Figure 4 is a conventional example. 5 is a cross-sectional view of the conventional example, FIG. 6 is a partially enlarged view of the previous figure, and FIG. 7 is a cross-sectional view taken along the line of the previous figure. 1... Pump line, 2... Tank line, 3
...flow control valve, 5 ... hydraulic motor, 7 ... cam, 9 ... roller, 10 ... spool, 11 ... recess, 21 ... spool sliding chamber, 29 ... cylinder chamber, 31 ... Piston part, 32... Front chamber, 33...
...back chamber.

Claims

[Scope of utility model registration request]

In a position indexing device in which a drive motor 5 is driven by a hydraulic pump and the object to be indexed is driven by the drive motor 5, a flow control valve 3 is connected to a pump line 1 or a tank line 2 connected to the drive motor 5. The flow rate control valve 3 includes a spool 10 that opens and closes a variable orifice and is slidably disposed in a spool sliding chamber 21, and the cam surface of the cam 7 that interlocks with the drive motor 5 has a spool 10 that opens and closes a variable orifice. By providing a positioning recess 11 and bringing the contact 9 of the spool 10 into contact with this cam surface, the spool 10 is
The opening degree of the variable orifice is adjusted in response to the cam shape, while the spool sliding chamber 21 has cylinder chambers 2 closed at both front and rear ends.
9 is provided around the spool 10, and a piston portion 31 that slides within the cylinder chamber 29 is provided in the middle of the spool 10.
The cylinder chamber 29 is divided into two chambers 3 at the front and rear by surrounding the cylinder chamber 29.
The pump line 1 is divided into two chambers 2 and 33, and the pump line 1 is connected to both chambers 3 and 3.
2. A position indexing device characterized in that the device is configured to be switched in communication with 2 and 33.