CN2056104U - Tapping-head for rolled thread - Google Patents

Abstract

The utility model rolled thread screw thread strand hand is a kind of manual screwing tool, form by parts such as strand hand body, roll dies, fixing strand handgrip, movable strand handgrip, slide, handle, screw thread linings, its machining screw is a kind of chipless processing, and laborsaving material-saving again is easy to use.It is identical that a kind of rolled thread screw thread of specification strand hand can process pitch, and the slightly different screw thread of nominal diameter.The utility model also is suitable for screw thread processing or the screw thread reparation that is used in the thin-walled mouth of pipe.

Description

Tapping-head for rolled thread

The utility model relates to the hand-operated tools of machining, is a kind of rolled thread screw thread strand hand of screw thread processing usefulness.

At present, in the machining, the hand-operated tools of the screw thread of use processing all adopts filament plate screw thread strand hand, the subject matter that exists is: this instrument is a machining, effort during operation, and a kind of filament plate can only process a kind of screw thread of dimensions, and screw thread that can not the processing thin-walled mouth of pipe.

The purpose of this utility model is that another kind of manual screwing tool will be provided--rolled thread screw thread strand hand, there is not smear metal during its machining screw, and laborsaving material-saving again, easy to use, particularly it also is suitable for the screw thread of the thin-walled mouth of pipe is processed or repaired.

To achieve these goals, rolled thread screw thread strand hand of the present utility model, by strand hand body, roll dies, fixing strand handgrip, parts such as movable strand handgrip, slide, handle, screw thread lining are formed; The inner chamber of strand hand body is equipped with three identical roll dies altogether, and wherein two roll dies are contained on the strand hand body, and another roll dies is contained on the slide of strand hand intracoelomic cavity; The installing hole of three roll dies axles all is oval slightly along screw thread garden tangential direction; On the movable strand handgrip handle is housed, movable strand handgrip connects with slide by screw mandrel; In the fixing strand handgrip screw thread lining is housed.

Clockwise rotate handle, movable strand handgrip just drives slide by screw mandrel and moves, and the roll dies on the slide is drawn close to other two roll dies, and workpiece is clamped, and a turning handle simultaneously rotates the strand hand and processes the screw forming on workpiece then.

The shape of three roll dies, size, pitch are all identical.The utility model is when the different workpiece of processing external diameter, and roll dies can be along with the needs of the helical angle that generates screw thread, in axis hole along the oval direction from making corresponding deflection.Like this, with the hank hand, it is identical just can to process pitch, and the screw thread that nominal diameter is had nothing in common with each other comes.

, the screw thread lining can be inserted the mouth of pipe earlier and will twist the root place that hand places machining screw during with the utility model, rotate then and twist hand and withdraw from the mouth of pipe, make screw forming the thin-wall pipes machining screw.Like this, both can avoid mouth of pipe distortion, and make the mouth of pipe present internal thread again.This also is with the processing thin-walled pipe internal-threaded method of the utility model.

For two thin-wall pipes that diameter is identical, can process slightly tapered internal and external threads respectively with the utility model, then two pipes are linked up.This processing is to repairing the oil and gas path pipeline of some equipment, and is comparatively practical.

The utility model also is suitable for to be used in repairs mouth of pipe screw thread, and when mouth of pipe screw thread presented distortion and can not use, available the utility model double thread was repaired processing.

The advantage of the utility model rolled thread screw thread strand hand is: easy to use, add laborsaving material-saving again in man-hour, and particularly be suitable for the screw thread of the thin-walled mouth of pipe is processed or repaired.

Fig. 1 is one embodiment of the present of invention, wherein:

The movable strand of 1--strand hand body 2--roll dies 3--fixing strand handgrip 4--handgrip 5--slide 6--handle 7--screw thread lining

The closely-pitched pitch of roll dies 2 is 1.5 millimeters, because the installing hole of each roll dies axle all is oval slightly along screw thread garden tangent line, so it is 1.5 millimeters that present embodiment strand hand can process pitch, and the slightly different nominal diameter of helical angle is 12～18 millimeters various fine threads.

Claims (3)

1, rolled thread screw thread strand hand is made up of parts such as strand hand body 1, roll dies 2, fixing strand handgrip 3, movable strand handgrip 4, slide 5, handle 6 screw threads linings 7.It is characterized in that: the inner chamber of strand hand body 1 is equipped with three identical roll dies 2 altogether, and wherein two roll dies 2 are contained on the strand hand body 1, and another roll dies 2 is contained on the slide 5 of strand hand body 1 inner chamber, and the installing hole of three roll dies axles all is oval slightly along screw thread garden tangential direction.

2, by the described rolled thread screw thread strand of claim 1 hand, it is characterized in that: on the movable strand handgrip 4 handle 6 is housed, movable strand handgrip 4 connects with slide 5 by screw mandrel.

3, by claim 1,2 described rolled thread screw thread strand hands, it is characterized in that: in the fixing strand handgrip 3 screw thread lining 7 is housed.

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