CN105658364A - Pipe threading attachment and adaptor for handheld drill - Google Patents

Abstract

A pipe threading system (10) for threading the outer surface of a pipe includes an adapter (12) having a cylindrical chamber (22), a detachable guiding attachment (14) and a spindle (18) for insertion into the chuck of a handheld electric drill. The pipe threading system (10) further includes at least one threading die (16) shaped to cut the thread of the pipe. The attachment (14) includes a central open bore (3; 20) to allow the threading of pipe sections beyond the length of the threading die's (16) cutting surface.

Description

Pipeline for hand-held formula drilling tool attacks thread attachment part and switching part

The cross reference of related application

The content of the U.S. Provisional Application 61/881,438 that on September 23rd, 2013 is submitted to by the application by reference and U.S.'s non-provisional application 14/494,531 that on September 23rd, 2014 submits to is incorporated into this, and requires their right of priority.

Technical field

This subject content discloses a kind of attachment for hand electric drilling tool, and screw thread is applied to the external diameter of round pipe by it. This attachment is combined with the screw die being formed for cutting screw thread, and is attached to hand-held formula drilling tool by switching part.

Background technology

Solid that is that pipeline is commonly used to delivering gas, liquid and viscosity or particle. Can see that they are commonly used in water pipe, building and petroleum industry etc. Pipeline is attached to accessory or device frequently by attachment mechanism. Spiral in outer diameter tube is threaded through a kind of method providing attachment with the respective threaded interlocking on the internal diameter of accessory. Screw thread is applied to pipeline and can improve its value and function.

But, it is expensive and loaded down with trivial details that screw method attacked by former pipeline. Their often need completely unique instrument and lack at a distance or be difficult to the ability of the local work arrived. When surrogate is bigger and not portable time other method also attempt requirement manual actuation. Therefore, as described herein, it is necessary to a kind of pipeline tapping device that is compact, cheap and that drive by hand electric drilling tool.

Summary of the invention

For meeting as above and other demand, this disclosure provides a kind of for for the external diameter of pipeline attack screw thread easily, portable and that there is cost benefit system. Such as, although this disclosure has described threaded pipe, it should be understood that present disclosure may be used for attacking screw thread on any right cylinder, and, present disclosure goes for electric conduit, transfer lime etc.

The present invention can comprise switching part and attachment system. Switching part can comprise main shaft to be fitted into the drilling tool chuck of standard, and multiple fastening piece can be adopted to fix attachment, such as dog screw.

As an alternative, or in addition, switching part and/or attachment system can be combined with completely moveable drill bit. The cross section of main shaft can comprise circle, trilateral, square, rectangle, pentagon, hexagon etc. for any suitable shape. Attachment comprises the attachment head containing the slit for cutting screw die. When driving by the hand electric drilling tool being attached, screw die is combined with cutting surface and creates screw thread style on pipeline. Screw die keeps panel to be fastened to attachment head and fix screw die in the screw die slit of head. Attachment head is combined with the pipeline that centre hole opening is longer than the cutting surface of screw die with length of cut. In addition, attachment head comprises the opening for cooling and for discharging scrap metal.

By by switching part main shaft insert hand electric drilling tool chuck and with chuck key fastening it, the present invention can use with other drilling tool attachments in the same way.Then user selects the attachment head of suitable dimension and it is fixed into switching part. In attachment, drilling tool can drive attachment via switching part. The cutting surface that attachment is positioned over the end without threaded tube and screw die contacts with pipeline. When operating drilling tool, screw die creates screw thread on the external diameter of pipeline. Once cutting surface contact pipeline, attachment will be fixed to pipeline and driven by the outside surface of electrodrill along pipeline. The length making screw die exceed cutting surface along pipeline by the centre hole of attachment head continues to attack screw thread, wears in hand-hole as the pipe section attacking screw thread. The sense of rotation of drilling tool can overturn for carving screw thread or for removing attachment from the pipeline attacking screw thread.

It is little size that the advantage of native system has benefited from the present invention relative to former pipeline tapping device. Little size allows user in the work of more position and allows greater flexibility when working on the pipeline that original place has been buried underground. It simplifies manipulation property and portability.

Another advantage of native system is the ability being attacked screw thread by switching between different attachment sizes fast on the pipeline of different size.

A further advantage of the invention is by the ability with switching between the screw die that different cutting surface arranges and the different screw thread style of fast creation and the degree of depth.

Other advantages of native system provided herein come from and use electric motor instead of manual work as main power resources, attack thread systems relative to manual actuation, electronic scheme will more Transmit evenly power and vibration can be reduced. The use of electric motor also will alleviate the health fatigue of operator. Depending on the motor of drilling tool, electric motor can provide moment of torsion more more than manual driving system. Electric motor can also be compacter than manual cranking or other Manual drive mechanism. In addition, electric motor can create screw thread quickly than manual system.

Important advantages derive is in using traditional hand electric drilling tool as power resources. This kind of drilling tool is customary in machine work environment. User is complete by not needing to buy special attacks thread systems or extra external impetus source, reduces overall system cost. If the use of power supply that is outside and that widely use make attachment and switching part ratio be combined with special power supply take less space and weight lighter.

Another advantage of native system is carried out the ability attacking screw thread at differing materials on the pipeline made fast. In addition, screw die body can be made up of the differing materials being suitable for cutting different pipeline.

Further advantage derives from attachment weight light compared with former tapping device. Lighter weight simplifies operation and alleviates the health fatigue of user. It also helps bigger portability.

The feature of other object of embodiment, advantage and novelty is stated in description part subsequently, and through to the inspection of description subsequently and accompanying drawing or the study produced or operate that can pass through embodiment, this part will become apparent for those skilled in the art. The object of design and advantage can be realized by the mode of the method, means and the combination that particularly point out in the following claims and obtain.

Accompanying drawing explanation

Accompanying drawing is by only example but describes one or more enforcement modes meeting present inventive concept in the way of not limiting.In accompanying drawing, same Reference numeral refers to for same or similar element.

Figure 1A is the stereographic map of the example of system disclosed herein.

Figure 1B is disclosed herein and the decomposition view of the embodiment of system that shows in figure ia.

Fig. 2 A is the top perspective view of the embodiment of switching part disclosed herein.

Fig. 2 B is the stereographic map of the example of the main shaft being attached to switching part.

Fig. 3 is the stereographic map of the example of the attachment head comprising opening.

Fig. 4 is the vertical view of another example of the screw die maintenance panel of the view comprising centre hole.

Fig. 5 is the stereographic map of the embodiment of screw die and cutting surface thereof.

Fig. 6 A, 6B guide part with the side-view of the switching part that is correctly supplied in device by pipeline and the embodiment of attachment system disclosed herein comprising.

Embodiment

The present invention is devoted to a kind of pipeline and attacks thread systems 10, and it comprises the switching part 12 for hand electric drilling tool and attachment 14, and system 10 is applicable on the external diameter of pipeline to attack screw thread. System 10 comprises at least one screw die 16, and it is configured as and cuts screw thread on the outside surface of pipeline. Attachment 14 comprises center drilling 20 to allow the insertion of pipeline, so that the pipe section of the length exceeding screw die cutting surface can be attacked screw thread.

As shown in Figure 1A, 1B, switching part 12 is for being attached to hand electric drilling tool by attachment 14. Switching part 12 can be made up of iron class alloy, other metal alloy or polymkeric substance. Switching part 12 can comprise the cylindrical cavity 22 for receiving cylindrical insert 15 and/or attachment 14. Switching part 12 can also comprise the main shaft 18 of the chuck being fixed into hand electric drilling tool. Main shaft 18 extends from the blind end of the circular cylindrical cavity 22 of switching part 12. Main shaft 18 can work together with the drilling tool of right angle and standard. The internal surface of cavity 22 can comprise smooth internal surface or comprise vertical long recess, and vertical long recess passes to the equal axis of attachment 14 to the corresponding groove interlocking on the outside surface of optional attachment 14 to guarantee the axis rotation of switching part 12 and rotates.

As shown in the embodiment of description in Fig. 1, screw die 16 can be the form of cylindrical inserts 15, and wherein cylindrical inserts 15 can embed in the cavity 22 of switching part 12. Can there is different sizes for attacking screw thread for having the pipeline of certain limit external diameter in cylindrical inserts 15. Cylindrical inserts 15 can comprise the internal surface 11 limiting center insert opening 17, and wherein internal surface 11 comprises at least one screw die 16. Such as, internal surface 11 can comprise multiple screw die 16 surface. Cylindrical inserts 15 can comprise the outside surface 13 of the internal surface of the circular cylindrical cavity 22 of contact switching part 12. Cylindrical inserts can be inserted into the circular cylindrical cavity 22 of switching part 12 removedly. Alternately, cylindrical inserts 15 can attach to attachment 14, and attachment 14 attaches to switching part 12 removedly.

Attachment 14 can attach to switching part 12 to be enclosed in system 10 by cylindrical inserts 15. Attachment 14 can make cylindrical inserts 15 remain on original position. Alternately, or in addition, part 12 of transferring can comprise interim locking mechanism so that cylindrical inserts 15 remains on original position. Such as, cavity 22 can comprise groove to receive the corresponding recesses of the outside surface of cylindrical inserts 15. Cavity 22 can comprise other different mechanisms so that cylindrical inserts 15 to be fastened to switching part 12, includes but not limited to screw thread, screw, pressure, or other suitable fastening mechanism any.

As shown in Figure 1, the cylindrical guide 36 that attachment 14 can comprise cylindrical diskware 5 and extend from the center attachment openings 3 in cylindrical diskware 5. Certainly, cylindrical diskware 5 can be any suitable shape, comprises hexagon. Center attachment openings 3 can align the pipeline receiving screw thread to be attacked with center insert opening 17. The outer perimeter of cylindrical diskware 5 can comprise screw thread and mate with the threaded portion with the internal surface of cavity 22. As an alternative, or in addition, the surface of cylindrical diskware 5 can comprise the breach preventing cylindrical diskware 5 from rotating.

In an embodiment, switching part 12 can comprise one or more fastening piece 24 if trip bolt to be fastened to switching part 12 by attachment 14. Such as, the cylindrical diskware 5 of attachment 14 can be attached to the cavity 22 of switching part 12 by screw. Alternate embodiment can use clamp or threaded portion so that attachment 14 to be fixed to switching part 12, and those of ordinary skill in the art identify from the example provided.

In another embodiment, system 10 can comprise the rigidly attached main shaft 18 to attachment 14, needs switching part 12 as previously mentioned. In this example, attachment 14 and switching part 12 can be a replacement two separate piece. Further screw die 16 and/or cylindrical insert 15 can not be discrete items, but the part of switching part 12 or attachment 14.

Attachment 14 can comprise attachment head 26 and screw die keeps panel 28 to receive at least one screw die 16, as shown in Figure 3,4. Can there is different sizes for attacking screw thread for having the pipeline of certain limit external diameter in attachment head 26. Attachment head 26 can be made up of iron class alloy, other metal alloy or polymkeric substance. Attachment head 26 can comprise multiple screw die slit 32 for accepting screw die 16. In an embodiment, attachment head comprises 4 screw die slits 32. Alternate embodiment can comprise less or more screw die slit 32. The vertical long recess of the corresponding recesses interlocking that attachment head 26 can also be combined with in the internal surface with part 12 of transferring on the outside surface of attachment 14 or attachment head 26. In addition, cylindrical spacer can insert the length attacking screw thread in attachment head 26 to be set on the pipeline of insertion.

In an embodiment, attachment 14 comprises the screw hole attacking screw thread, and for adopting, screw die is kept panel 28 to be fastened to attachment 14 to this threaded hole by fastening piece 30 (such as screw). Other embodiment can comprise use clamp, magnet or other fastening piece so that screw die to keep panel 28 be fastened to attachment 14.

As shown in Figure 3, attachment head 26 can be combined with opening 34 in screw die slit 32. The scrap metal that these openings 34 cut before making leaves attachment head 26. Opening 34 also allows by providing the path of turnover to form natural convection and make pipeline and screw die radiating and cooling for air. Described path also allows to use cutting fluid or other fluid lubricate or cool attachment 14 simultaneously. They can also reduce the quality of attachment head 26. In addition, user can see pipeline by opening 34 and measure pipeline and attacked the length of screw thread.

As shown in Figure 4, screw die keeps panel 28 to be fixed in attachment head 26 by one or more screw die 16. Screw die 16 is fixed in the screw die slit 32 of attachment head 26. In such embodiments, screw die 16 can be linear, and as shown in Figure 5, it is adaptive or slip into slit 32 that its neutral line screw die 16 is configured to the internal surface along attachment head 26.

Screw die keeps panel 28 can change screw die 16 for removable to allow, and can be fixed to attachment 14 by several fastening pieces 30, and showing fastening piece 30 in an embodiment is screw. Screw die keeps panel 28 can comprise hole, and corresponding to the threaded hole in attachment head 26, this some holes allows screw die to keep panel 28 fastening piece 30 to be fastened to attachment head 26. Screw die maintenance panel 28 can by metal alloy or polymers manufacturing. Panel 28 can comprise the face plate center opening 29 alignd with open center hole 20 to receive the pipeline for attacking screw thread.

Attachment head 26 defines the internal attachment cavity comprising open center hole 20, and open center hole 20 accepts pipeline and attacked the part of screw thread. This hole 20 allows to carry out attacking screw thread at the pipe section darker than the extension of the length of screw die cutting surface.

Attachment head 26 can comprise the multiple slits 32 for receiving each screw die 16. These slits 32 can keep panel 28 and used by removing screw die. Screw die 16 is fixed in their slit by fastening screw die holding surface plate 28. These slits 32 can present radial symmetry around attachment head 26. Screw die 16 can also be spaced apart the screw die cutting surface made in succession and follow the screw thread style identical with former otch, deepens existing screw thread. The use of multiple screw die 16 alleviates the abrasion on screw die 16 and load.

Screw die 16 can be made up of hardening metal alloy, is similar to those at other drill bit and what instrument used. Each screw die 16 comprises certain limit cutting surface, as shown in Figure 1 and Figure 5. When drilling tool and attachment 14 operate, the outside surface of the cutting surface contact pipeline of screw die 16. Cutting surface can be what gradually contract so that each cutting surface cuts progressively and gos deep into pipeline. This kind of layout defines screw thread style gradually, and wherein otch in succession removes a small amount of pipeline material. Which reduce the stress on screw die 16, attachment 14 and electrodrill. Cutting surface first can be combined with inclined-plane or room, chamber with the front portion of tube contacts so that attachment 14 when starting to cut screw thread centering and stablize to pipeline. Along with screw thread is progressive to darker cutting surface, the stable firmly attachment 14 of screw die 16 also allows it to drive along pipeline by electrodrill. When drilling tool reverse operating, screw die 16 can also be used for carving screw thread. Screw die 16 can be combined with different cutting surfaces to create different screw thread styles or depth of cut. They can also be made up of differing materials to cut various types of pipeline. Screw die 16 can be replaced because of abrasion or cutting characteristic.

Cutting surface on screw die 16 can be angled, thus when operating drilling tool and during attachment, and cutting surface is inwardly driven from pipe end by attacking screw thread due to pipeline. Screw die 16 can also be spaced apart, thus the cutting surface on screw die 16 in succession is followed the identical screw thread cut by former screw die and deepened existing otch progressively. This kind of cutting order creates the end originating in pipeline and the spiral screw thread that extends internally.

As shown in Fig. 6 A, 6B, system 10 can comprise cylindrical guiding part 36 and directly enter in device correctly to be supplied by pipeline. Such as, cylindrical guiding part 36 can extend from the face plate center opening 29 of attachment, and wherein cylindrical guiding part 36 is configured to receiving pipeline. Face plate center opening 29 aligns with open center hole 20. In the drawings, guide part 36 to be shown as to be positioned at before the 2nd switching part.In an embodiment, part 36 is guided can forever to be solidly connected to attachment head 26. In another embodiment, guide part 36 can be removable. Attachment head 26 can be configured to guiding part 36 interact with multiple varying dimensions to adapt to the pipeline of multiple size.

It is noted that the variations and modifications of embodiment described herein are to it will be readily apparent to those skilled in the art that. This kind of change and amendment can be made when not departing from the spirit and scope of the present invention and do not reduce its adjoint advantage. Such as, it is possible to the various embodiments of method and portable electric appts are provided based on the combination from the various features and functions of provided in this article subject content.

Claims (14)

1. a thread systems attacked by pipeline, comprising:

Switching part, it comprises circular cylindrical cavity and main shaft, and wherein said main shaft is configured to engage with hand electric drilling tool;

Cylindrical insert, it comprises outside surface and internal surface, and wherein said internal surface defines center insert opening, and wherein said internal surface comprises at least one screw die, and wherein said cylindrical insert is positioned in described circular cylindrical cavity removedly; And

Attachment, it is attached to described switching part removedly, the cylindrical guide that wherein said switching part comprises cylindrical diskware and extends from the center attachment openings in described cylindrical diskware,

Wherein, described center insert opening aligns the pipeline that receives for attacking screw thread with described center attachment openings.

2. system according to claim 1, wherein said cylindrical diskware comprises the diskware outside surface of the circumference limiting described cylindrical diskware, wherein said diskware outside surface comprise diskware screw thread at least partially, wherein said diskware screw thread along the internal surface of the circular cylindrical cavity of described switching part part removedly with described cavity engagement threads.

3. system according to claim 1, also comprises screw, and the cylindrical diskware of described attachment is attached to the circular cylindrical cavity of described switching part by wherein said screw removedly.

4. system according to claim 1, wherein said cylindrical guide comprises at least one surface opening of the sidewall being positioned at described cylindrical guide so that air is flowed by described attachment.

5. system according to claim 1, multiple cutting surfaces of wherein said screw die define the internal surface of described cylindrical insert.

6. system according to claim 1, wherein said main shaft attaches to the outside surface of the blind end of described cavity, and the open end of wherein said cavity is configured to receive the cylindrical diskware of described attachment.

7. a thread systems attacked by pipeline, comprising:

Switching part, it comprises circular cylindrical cavity and main shaft, and wherein said main shaft attaches to the outside surface of the blind end of described cavity, and wherein said spindle design is for engage with hand electric drilling tool; And

Attachment, it is attached to described switching part removedly, and wherein said switching part comprises:

Cylindrical attachment body, it comprises inner attachment cavity, and wherein said attachment cavity comprises the open center hole being configured to receiving pipeline,

At least one screw die being positioned at described attachment cavity, the cutting surface of wherein said screw die defines the internal surface in described open center hole, and

Panel, it attaches to the end of described cylindrical attachment body removedly, at least one screw die described is fixed in described attachment cavity by wherein said panel, wherein said panel comprises face plate center opening, and wherein said face plate center opening aligns the pipeline received for attacking screw thread with described open center hole.

8. system according to claim 7, wherein said attachment cavity comprises at least one the screw die slit being configured to receive described screw die.

9. thread systems attacked by pipeline according to claim 7, and wherein said cylindrical attachment body comprises at least one opening of the sidewall being positioned at described cylindrical attachment body so that air is flowed by described attachment.

10. system according to claim 7, multiple cutting surfaces of the multiple screw die in wherein said attachment cavity define the open center hole of described attachment cavity.

11. systems according to claim 7, wherein said circular cylindrical cavity receives described attachment at least partially.

12. systems according to claim 7, also comprise the cylindrical guide extended from the face plate center opening of described attachment, and wherein said cylindrical guide is configured to receiving pipeline.

13. systems according to claim 7, the part of the outside surface of wherein said attachment comprises attachment screw thread, wherein said attachment screw thread along the internal surface of the circular cylindrical cavity of described switching part part removedly with described switching part engagement threads.

14. systems according to claim 7, also comprise screw, and described switching part is attached to described attachment by wherein said screw removedly.