CN215396110U

CN215396110U - External screw connector hole digger

Info

Publication number: CN215396110U
Application number: CN202121842335.XU
Authority: CN
Inventors: 傅方强
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-07
Filing date: 2021-08-07
Publication date: 2022-01-04
Anticipated expiration: 2031-08-07

Abstract

The utility model provides an external thread port hole digger which comprises a drill handle and a drill body positioned at one end of the drill handle, wherein a quick-connection external thread is arranged at one end of the drill handle, which is back to the drill body; the quick-connection thread insert is characterized by further comprising a quick-connection thread insert, wherein a quick-connection internal thread used for being screwed with the quick-connection external thread is arranged on the inner wall of the quick-connection thread insert, and a main polygonal clamping portion is arranged on the outer wall of the quick-connection thread insert. The centering device has the advantages of convenience in production and installation, reduction in rejection rate and good centering effect.

Description

External screw connector hole digger

Technical Field

The utility model relates to the field of tappers, in particular to an external screw connector tapper.

Background

The hole digger has various types and can be divided into a stone hole digger, a metal hole digger and a wood hole digger according to hole-forming objects, the existing wood hole digger is often divided into drill chuck installation and quick-release chuck installation when being installed, wherein the drill chuck installation has better stability (concentricity), but is easy to slip under the condition of not firm clamping; the quick-release head has a mounting gap, so that the quick-release head is poor in axial accuracy and prone to being inclined although a slipping phenomenon does not exist.

In view of the above problems, the patentees have filed for applications with the following numbers: 2021211657455, named: the utility model relates to a utility model of an internal screw interface woodworking tapper, which comprises a drill handle and a drill body positioned at one end of the drill handle, wherein the end surface of the drill handle opposite to the drill body is provided with an installation screw hole; a centering hole is formed in the center of the end face of one end, back to the drill handle, of the drill body, and a centering head is arranged in the centering hole; the outer wall of the drill body is provided with two main blade mounting parts which are uniformly distributed at 180 degrees, and the main blade mounting parts penetrate from one end of the drill body back to the drill handle to the other end of the drill body; the outer wall of the drill body is also provided with two auxiliary blade mounting parts which are uniformly distributed at 180 degrees, and the auxiliary blade mounting parts are positioned on the outer cylindrical wall of the drill body between the two main blade mounting parts; the end part of one end of the centering head, which is back to the drill shank, is in a polygonal pyramid shape, the main blade is installed on the main blade installation part, and the auxiliary blade is installed on the auxiliary blade installation part.

Although the above patent solves the problems mentioned in the background art, the applicant finds that the strength of the screw is reduced due to the diameter of the drill shank when the screw is installed, and the installation of the screw is easily affected by the diameter of the drill shank, and the installation of the screw is an internal thread and belongs to a blind hole, so that the screw is difficult to tap, the screw tap is easily broken, the thickness of the hole wall is uneven, and the screw is not suitable for direct clamping of a drill chuck; meanwhile, the connecting piece in threaded connection with the drill bit needs to be punched and opened, so that the cost is high, the early-stage production investment of a manufacturer is large, and the healthy development of enterprises is not facilitated.

SUMMERY OF THE UTILITY MODEL

Based on the above problems, the present invention aims to provide an external screw joint hole opener which is easy to produce and install, reduces the rejection rate, and has a good centering effect.

Aiming at the problems, the following technical scheme is provided: an external thread port hole digger comprises a drill handle and a drill body positioned at one end of the drill handle, wherein a quick-connection external thread is arranged at one end of the drill handle, which is back to the drill body; the quick-connection thread insert is characterized by further comprising a quick-connection thread insert, wherein a quick-connection internal thread used for being screwed with the quick-connection external thread is arranged on the inner wall of the quick-connection thread insert, and a main polygonal clamping portion is arranged on the outer wall of the quick-connection thread insert.

In the structure, the main polygonal clamping part of the quick-connection threaded sleeve is hexagonal and is used for being matched and clamped with a drill chuck, the inner wall of the quick-connection threaded sleeve is provided with quick-connection internal threads, and the quick-connection internal threads are arranged in a communicating manner, so that the quick-connection threaded sleeve is very convenient to produce and can be obtained by directly purchasing and cutting off hexagonal sectional materials; the quick-connection external thread of the drill handle can be directly processed in the modes of turning, thread rolling, thread sleeving and the like, and the quick-connection external thread belongs to the external thread, so that the smoothness of chip removal can be effectively ensured during processing, and the finished product rate, the structural strength and the relative position precision of the quick-connection external thread are superior to those of the previously applied internal thread structure, so that a series of problems encountered in actual production of the existing patent can be effectively solved, and the production efficiency and the product quality are effectively improved; the fast external screw thread that connects on the drillstock can be directly with the cooperation butt joint of the screw shell that connects soon of equipment centre gripping, and the screw thread of the external screw thread that connects soon revolves to the rotation direction syntropy with equipment, can avoid the circumstances of the external screw thread that connects soon and the separation of the screw shell that connects soon to take place in the course of working to realize from tight effect, realized the accurate butt joint of drillstock and equipment main shaft when avoiding skidding, effectively guarantee machining precision and stability.

The utility model is further provided that one end of the quick-connection external thread, which faces away from the drill handle, is provided with a secondary polygonal clamping part, and the secondary polygonal clamping part is positioned in the quick-connection internal thread when the quick-connection thread sleeve is screwed on the quick-connection external thread.

In the structure, the secondary polygonal clamping part is hexagonal, and the outer contour of the secondary polygonal clamping part is smaller than that of the main polygonal clamping part of the quick-connection screw sleeve, so that the secondary polygonal clamping part can be conveniently matched with a small-caliber drill chuck, a socket wrench or a screwdriver, and the installation convenience is improved.

The end surface of one end of the drill body, which is back to the drill handle, is provided with a centering head, a main blade and an auxiliary blade, and the centering head and the drill body are arranged concentrically; the main blades are two pieces which are arranged at intervals of 180 degrees along the circumferential direction of the drill body; the auxiliary blades are two blades which are arranged at intervals of 180 degrees along the circumferential direction of the drill body and are arranged at intervals of 90 degrees with the main blades in the circumferential direction of the drill body.

In the structure, during hole opening, the centering head can play a centering role while rotating and feeding, meanwhile, the main blade cuts a machined surface, and the auxiliary blade can trim the drilled inner hole wall.

The utility model further provides that the end part of the centering head, which faces away from the drill shank, is in a polygonal pyramid shape.

In the above structure, the centering head end portion is preferably a quadrangular pyramid shape.

The utility model is further arranged that the centering head, the main blade and the auxiliary blade are all made of hard alloy materials.

In the structure, the centering head, the main blade and the auxiliary blade made of the hard alloy can effectively ensure the wear resistance and the sharpness.

The utility model is further arranged in that one end of the drill handle, which is back to the quick-connection external thread, is provided with a drill body external thread with the same rotating direction as the quick-connection external thread, the drill body is cylindrical, two ends of the drill body are respectively provided with a cutting edge and an end cover, and the end cover is provided with a drill body internal thread which is screwed with the drill body external thread; the drill handle is provided with a centering hole in the center of the end face of one end, back to the quick-connection external thread, of the drill handle, and a centering drill bit is arranged in the centering hole.

In the structure, the drill handle and the drill body are butted through the threads, so that the drill body can be conveniently and independently replaced on the premise of not replacing the drill handle, and the use cost is reduced; the fast external screw thread on the drill shank can be directly in matched butt joint with the fast screw sleeve clamped by equipment, the external screw thread of the drill body is in screwed butt joint with the drill body, the screw thread of the fast external screw thread and the external screw thread of the drill body is in the same direction as the rotating direction of the equipment, the fast external screw thread and the fast screw sleeve can be avoided in the machining process, the external screw thread of the drill body is separated from the drill body, the self-tightening effect is realized, the drill shank and the equipment spindle are realized while the slipping is avoided, the drill shank is in accurate butt joint with the drill body, and the machining precision and the stability are effectively guaranteed.

The utility model is further provided that one end of the drill body provided with the cutting edge faces to the same direction as the drill tip of the centering drill, and the drill tip of the centering drill extends out of the drill body.

In the structure, the drill point of the centering drill bit extends out of the drill body and can drill into the surface of the object to be drilled to realize centering before the drill body.

The utility model is further provided that the cutting edges are a plurality of and are uniformly distributed along the circumferential direction of the drill body.

In the above-mentioned structure, a plurality of blade designs can effectively promote life, reduces the wearing and tearing of each blade.

The utility model is further arranged in that the outer wall of the drill handle is provided with a locking hole communicated with the centering hole, and the locking hole is provided with a fixing screw which is screwed with the locking hole to fix the centering drill.

In the structure, a section of the centering drill bit positioned in the locking hole is milled with a centering plane matched with the fixing screw on the outer wall.

The utility model has the beneficial effects that: the main polygonal clamping part of the quick-connection threaded sleeve is hexagonal and is used for being matched with a drill chuck for clamping, the inner wall of the quick-connection threaded sleeve is provided with quick-connection internal threads, and the quick-connection internal threads are arranged in a communicating manner, so that the quick-connection threaded sleeve is very convenient to produce and can be obtained by directly purchasing and cutting off hexagonal sectional materials; the quick-connection external thread of the drill handle can be directly processed in the modes of turning, thread rolling, thread sleeving and the like, and the quick-connection external thread belongs to the external thread, so that the smoothness of chip removal can be effectively ensured during processing, and the finished product rate, the structural strength and the relative position precision of the quick-connection external thread are superior to those of the previously applied internal thread structure, so that a series of problems encountered in actual production of the existing patent can be effectively solved, and the production efficiency and the product quality are effectively improved; the fast external screw thread that connects on the drillstock can be directly with the cooperation butt joint of the screw shell that connects soon of equipment centre gripping, and the screw thread of the external screw thread that connects soon revolves to the rotation direction syntropy with equipment, can avoid the circumstances of the external screw thread that connects soon and the separation of the screw shell that connects soon to take place in the course of working to realize from tight effect, realized the accurate butt joint of drillstock and equipment main shaft when avoiding skidding, effectively guarantee machining precision and stability.

Drawings

Fig. 1 is a schematic view of the overall structure of embodiment 1 of the present invention.

Fig. 2 is a schematic overall full-section structure diagram of embodiment 1 of the present invention.

Fig. 3 is a schematic view of the overall structure of the drill shank and the drill body according to embodiment 1 of the present invention.

Fig. 4 is a schematic diagram of an explosion full-section structure of embodiment 1 of the present invention.

Fig. 5 is a schematic view of the overall structure of embodiment 2 of the present invention.

Fig. 6 is a schematic overall full-section structure diagram of embodiment 2 of the present invention.

Fig. 7 is a schematic view of the overall structure of the drill shank and the drill body according to embodiment 2 of the present invention.

Fig. 8 is a schematic view of an explosion full-section structure of embodiment 2 of the present invention.

The reference numbers in the figures mean: 10-a drill shank; 11-connecting external threads; 12-secondary polygonal clamping portion; 13-drill body external thread; 14-a centering hole; 15-locking holes; 16-a set screw; 20-a drill body; 21-a centering head; 22-a primary blade; 23-a secondary blade; 24-cutting edge; 25-end cap; 251-internal threads; 30-quick connection thread insert; 31-quick connection of internal threads; 32-a primary polygonal clamping portion; 40-pilot drill.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

Example 1

Referring to fig. 1 to 8, the external screw interface hole digger shown in fig. 1 to 4 comprises a drill shank 10 and a drill body 20 located at one end of the drill shank 10, wherein one end of the drill shank 10, which faces away from the drill body 20, is provided with a quick-connection external thread 11; the quick-connection thread insert is characterized by further comprising a quick-connection thread insert 30, wherein a quick-connection internal thread 31 used for being screwed with the quick-connection external thread 11 is arranged on the inner wall of the quick-connection thread insert 30, and a main polygonal clamping portion 32 is arranged on the outer wall of the quick-connection thread insert 30.

In the structure, the main polygonal clamping part 32 of the quick-connection threaded sleeve 30 is hexagonal and is used for being matched and clamped with a drill chuck (not shown in the figure), the inner wall of the quick-connection threaded sleeve is provided with the quick-connection internal thread 31, and the quick-connection internal thread 31 is arranged in a communicating manner, so that the quick-connection threaded sleeve 30 is very convenient to produce and can be obtained by directly purchasing and cutting off a hexagonal section; the quick-connection external thread 11 of the drill handle 10 can be directly processed in the modes of turning, thread rolling, thread sleeving and the like, and the quick-connection external thread 11 belongs to an external thread, so that the smoothness of chip removal can be effectively ensured during processing, and the finished product rate, the structural strength and the relative position precision of the quick-connection external thread are all superior to those of an internal thread structure applied in advance, so that a series of problems encountered in actual production of the existing patent can be effectively solved, and the production efficiency and the product quality are effectively improved; the fast thread 11 that connects on the drillstock 10 can be directly with the fast swivel nut 30 cooperation butt joint of equipment centre gripping, the screw thread of the fast thread 11 of connecting revolves to the rotation direction syntropy with equipment, can avoid the condition emergence of the fast thread 11 of connecting with the separation of the fast swivel nut 30 in the course of working, and realize from tight effect, realized the accurate butt joint of drillstock 10 with the equipment main shaft when avoiding skidding, effectively guarantee machining precision and stability.

In this embodiment, one end of the quick connection external thread 11, which faces away from the drill shank 10, is provided with a secondary polygonal clamping portion 12, and the secondary polygonal clamping portion 12 is located in the quick connection internal thread 11 when the quick connection thread insert 30 is screwed on the quick connection external thread 11.

In the structure, the secondary polygonal clamping part 12 is hexagonal, and the outer contour of the secondary polygonal clamping part is smaller than that of the primary polygonal clamping part 32 of the quick-connection screw sleeve 30, so that the secondary polygonal clamping part can be conveniently matched with a drill chuck, a socket wrench or a screwdriver with a small caliber, and the installation convenience is improved.

In this embodiment, a centering head 21, a main blade 22 and an auxiliary blade 23 are arranged on an end surface of one end of the drill body 20, which faces away from the drill shank 10, and the centering head 21 and the drill body 20 are arranged concentrically; the main blades 22 are two pieces arranged at an interval of 180 degrees along the circumferential direction of the drill body 20; the secondary blades 23 are two pieces which are arranged along the circumferential direction of the drill body 20 at intervals of 180 degrees and arranged at intervals of 90 degrees with the primary blades 22 in the circumferential direction of the drill body 20.

In the above structure, the centering head 21 performs centering while rotating and feeding, the main blade 22 cuts the machined surface, and the auxiliary blade 23 trims the drilled inner hole wall.

In the present embodiment, the end of the centering head 21 facing away from the drill shank 10 is in the shape of a polygonal pyramid.

In the above structure, the end of the centering head 21 is preferably a quadrangular pyramid.

In this embodiment, the centering head 21, the main blade 22, and the sub-blade 23 are made of cemented carbide.

In the above structure, the centering head 21, the main blade 22 and the auxiliary blade 23 made of cemented carbide can effectively ensure the wear resistance and sharpness.

Example 2

Referring to fig. 1 to 8, the external screw interface hole digger shown in fig. 5 to 8 comprises a drill shank 10 and a drill body 20 located at one end of the drill shank 10, wherein one end of the drill shank 10, which faces away from the drill body 20, is provided with a quick-connection external thread 11; the quick-connection thread insert is characterized by further comprising a quick-connection thread insert 30, wherein a quick-connection internal thread 31 used for being screwed with the quick-connection external thread 11 is arranged on the inner wall of the quick-connection thread insert 30, and a main polygonal clamping portion 32 is arranged on the outer wall of the quick-connection thread insert 30.

In this embodiment, one end of the drill shank 10, which is opposite to the quick-connection external thread 11, is provided with a drill body external thread 13 having the same rotation direction as the quick-connection external thread 11, the drill body 20 is cylindrical, two ends of the drill body 20 are respectively provided with a cutting edge 24 and an end cover 25, and the end cover 25 is provided with a drill body internal thread 251 for screwing with the drill body external thread 13; the drill shank 10 is provided with a centering hole 14 in the center of the end face of one end back to the quick-connection external thread 11, and a centering drill bit 40 is arranged in the centering hole 14.

In the structure, the drill handle 10 and the drill body 20 are butted through threads, so that the drill body 20 can be conveniently and independently replaced on the premise of not replacing the drill handle 10, and the use cost is reduced; the fast external screw thread 11 on the drill shank 10 can be directly matched and butted with the fast connecting screw sleeve 30 clamped by equipment, simultaneously, the drill body external screw thread 13 is in screwed butt joint with the drill body 20, the screw thread turning directions of the fast external screw thread 11 and the drill body external screw thread 13 are the same as the rotating direction of the equipment, the fast external screw thread 11 and the fast connecting screw sleeve 30 can be avoided in the processing process, the situation that the drill body external screw thread 13 is separated from the drill body 20 occurs, the self-tightening effect is realized, the drill shank 10 and an equipment spindle are realized while the slipping is avoided, the drill shank 10 is accurately butted with the drill body 20, and the processing precision and the stability are effectively ensured.

In this embodiment, the end of the drill body 20 having the cutting edge 24 faces in the same direction as the drill tip of the pilot drill 40, and the drill tip of the pilot drill 40 extends out of the drill body 20.

In the above structure, the drill tip of the centering drill 40 protrudes out of the drill body 20, and can be centered before the drill body 20 drills into the surface of the object to be drilled.

In this embodiment, the cutting edges 24 are uniformly distributed along the circumferential direction of the drill body 20.

In the above-mentioned structure, a plurality of blades 24 design can effectively promote life, reduces the wearing and tearing of each blade 24.

In this embodiment, the outer wall of the drill handle 10 is provided with a locking hole 15 communicated with the centering hole 14, and the locking hole 15 is provided with a fixing screw 16 screwed with the locking hole 15 to fix the centering drill 40.

In the above structure, a section of the pilot bit 40 located in the locking hole 15 has a centering plane (not shown) milled on its outer wall to fit the fixing screw 16.

The utility model has the beneficial effects that: the main polygonal clamping part 32 of the quick-connection threaded sleeve 30 is hexagonal and is used for being matched and clamped with a drill chuck (not shown in the figure), the inner wall of the quick-connection threaded sleeve is provided with quick-connection internal threads 31, and the quick-connection internal threads 31 are arranged in a communicating mode, so that the quick-connection threaded sleeve 30 is very convenient to produce and can be obtained by directly purchasing and cutting off hexagonal sectional materials; the quick-connection external thread 11 of the drill handle 10 can be directly processed in the modes of turning, thread rolling, thread sleeving and the like, and the quick-connection external thread 11 belongs to an external thread, so that the smoothness of chip removal can be effectively ensured during processing, and the finished product rate, the structural strength and the relative position precision of the quick-connection external thread are all superior to those of an internal thread structure applied in advance, so that a series of problems encountered in actual production of the existing patent can be effectively solved, and the production efficiency and the product quality are effectively improved; the fast thread 11 that connects on the drillstock 10 can be directly with the fast swivel nut 30 cooperation butt joint of equipment centre gripping, the screw thread of the fast thread 11 of connecting revolves to the rotation direction syntropy with equipment, can avoid the condition emergence of the fast thread 11 of connecting with the separation of the fast swivel nut 30 in the course of working, and realize from tight effect, realized the accurate butt joint of drillstock 10 with the equipment main shaft when avoiding skidding, effectively guarantee machining precision and stability.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and those modifications and variations assumed in the above are also considered to be within the protective scope of the present invention.

Claims

1. The utility model provides an external screw interface hole digger, includes the drillstock and is located the drill body of drillstock one end, its characterized in that: one end of the drill handle, which is back to the drill body, is provided with a quick-connection external thread; the quick-connection thread insert is characterized by further comprising a quick-connection thread insert, wherein a quick-connection internal thread used for being screwed with the quick-connection external thread is arranged on the inner wall of the quick-connection thread insert, and a main polygonal clamping portion is arranged on the outer wall of the quick-connection thread insert.

2. The external screw interface hole opener of claim 1, wherein: the quick-connection external thread is characterized in that a secondary polygonal clamping portion is arranged at one end, back to the drill shank, of the quick-connection external thread, and the secondary polygonal clamping portion is located in the quick-connection internal thread when the quick-connection thread insert is screwed on the quick-connection external thread.

3. An external screw interface tap according to claim 1 or claim 2 wherein: the end surface of one end of the drill body, which is back to the drill handle, is provided with a centering head, a main blade and an auxiliary blade, and the centering head and the drill body are arranged concentrically; the main blades are two pieces which are arranged at intervals of 180 degrees along the circumferential direction of the drill body; the auxiliary blades are two blades which are arranged at intervals of 180 degrees along the circumferential direction of the drill body and are arranged at intervals of 90 degrees with the main blades in the circumferential direction of the drill body.

4. The external screw interface hole opener of claim 3, wherein: the end part of one end of the centering head, which is back to the drill handle, is in a polygonal pyramid shape.

5. The external screw interface hole opener of claim 3, wherein: the centering head, the main blade and the auxiliary blade are all made of hard alloy materials.

6. An external screw interface tap according to claim 1 or claim 2 wherein: one end of the drill handle, which is back to the quick-connection external thread, is provided with a drill body external thread with the same rotation direction as the quick-connection external thread, the drill body is cylindrical, two ends of the drill body are respectively provided with a cutting edge and an end cover, and the end cover is provided with a drill body internal thread which is screwed with the drill body external thread; the drill handle is provided with a centering hole in the center of the end face of one end, back to the quick-connection external thread, of the drill handle, and a centering drill bit is arranged in the centering hole.

7. The external screw interface hole opener of claim 6, wherein: the drill body is provided with a cutting edge, one end of the drill body faces the same direction as the drill tip of the centering drill, and the drill tip of the centering drill extends out of the drill body.

8. The external screw interface hole opener of claim 6, wherein: the cutting edges are a plurality of and are uniformly distributed along the circumferential direction of the drill body.

9. The external screw interface hole opener of claim 6, wherein: the outer wall of the drill handle is provided with a locking hole communicated with the centering hole, and the locking hole is provided with a fixing screw which is screwed with the locking hole to fix the centering drill.