Screw blade stretcher capable of controlling screw pitch

The utility model discloses a screw pitch controllable helical blade stretcher which comprises a device base, a fixing support is arranged on the upper surface of the device base, a placing groove is formed in the surface of the fixing support, limiting sliding grooves are formed in the upper side a...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	YANG QINGYAN, XIA YONGZHONG, YANG WEI, XIA PENGCHENG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PUNCHING METAL TRANSPORTING WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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