JPS61195953U

JPS61195953U -

Info

Publication number: JPS61195953U
Application number: JP7769485U
Authority: JP
Priority date: 1985-05-27
Filing date: 1985-05-27
Publication date: 1986-12-06

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例に係る旋盤における
ワークのセツトミス防止機構の概略構成図、第２
図はワークを正規の向きに装着した時のチヤツク
部近傍の拡大縦断面図、第３図はワークを逆向き
に装着した時のチヤツク部近傍の拡大縦断面図、
である。１……旋盤、３……スピンドル、５……チヤツ
ク部、７，１６……空気通路、８……ワーク、１
１……空気通路制御弁、１２……弁体、１８……
圧縮空気供給手段、１９……圧縮空気供給通路、
２１……回転継手手段、２２……背圧検出手段、
２４……起動回路。 FIG. 1 is a schematic configuration diagram of a workpiece setting error prevention mechanism in a lathe according to an embodiment of the present invention, and FIG.
The figure is an enlarged longitudinal sectional view of the vicinity of the chuck when the workpiece is mounted in the normal direction, and Figure 3 is an enlarged longitudinal sectional view of the vicinity of the chuck when the workpiece is mounted in the opposite direction.
It is. 1...Lathe, 3...Spindle, 5...Chuck part, 7, 16...Air passage, 8...Work, 1
1... Air passage control valve, 12... Valve body, 18...
Compressed air supply means, 19... compressed air supply passage,
21...Rotating joint means, 22...Back pressure detection means,
24...Start circuit.

Claims

[Scope of utility model registration request]

The spindle of a lathe that processes a workpiece that can be attached to the chuck even when turned upside down is provided with an air passage that penetrates from the rear end of the spindle toward the chuck. A compressed air supply means for supplying compressed air to the air passage is connected to the end side via the compressed air supply passage, and the chuck side of the air passage is capable of contacting a workpiece attached to the chuck. It has an energized valve body and is arranged in a position that blocks the air passage when the valve body abuts a workpiece mounted with the front and back sides in the normal position, and otherwise opens the air passage to the atmosphere. an air passage control valve provided in the compressed air supply passage, and back pressure detection means for outputting an on signal based on back pressure generated by the shutoff operation of the air passage control valve, and the back pressure detection means A workpiece setting error prevention mechanism in a lathe, characterized in that: is connected to a starting circuit of the lathe.