CN208289158U - Screw tap - Google Patents
Screw tap Download PDFInfo
- Publication number
- CN208289158U CN208289158U CN201820861213.7U CN201820861213U CN208289158U CN 208289158 U CN208289158 U CN 208289158U CN 201820861213 U CN201820861213 U CN 201820861213U CN 208289158 U CN208289158 U CN 208289158U
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- China
- Prior art keywords
- connecting portion
- diameter
- screw tap
- knife handle
- area
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- Expired - Fee Related
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Abstract
The utility model relates to drilling device technical fields, provide a kind of screw tap, comprising: knife handle, first connecting portion and processing department, the first connecting portion are connected between the knife handle and processing department；One end of the processing department is connect with the other end of the first connecting portion, the processing department has central spindle, cutting edge is provided in the central spindle, the cutting edge includes at least two protrusion areas and at least two smooth areas, the protrusion area and smooth area are surrounded on the rotation axis, and it is arranged alternately, the diameter for the rotational trajectory that the farthest point of rotation axis described in distance is formed in the protrusion area is greater than the diameter for the rotational trajectory that the farthest point of rotation axis described in distance in the smooth area is formed.Based on above structure, during carrying out tapping using the screw tap, the cutting that tapping generates can be smoothly discharged by the gap between the inner wall and smooth area in hole so that the screw tap can continuous operation.
Description
Technical field
The utility model relates to drilling device technical field more particularly to a kind of screw taps.
Background technique
Screw tap is a kind of cutter of machining internal thread, can be divided into spiral tap and straight sword screw tap according to shape, according to making
Set tap and machine tap can be divided into environment.
Tapping is to belong to relatively difficult manufacturing procedure, is cut because screw tap is almost embedded in workpiece, every
The machining load of tooth will be big than other cutters, and screw tap is very big with work piece interface along screw thread, when screw cutting it
It must accommodate and fines that when scrap fallaway generates, therefore, it can be stated that screw tap works under very arduous test conditions.In order to make
Tapping is gone on smoothly, the various problems for answering forethought to be likely to occur.As workpiece material performance, select what cutter and machine
Bed, selection how high cutting speed, the amount of feeding etc..
During realizing the application, the inventor finds that the existing technology has at least the following problems: current screw tap exists
During carrying out tapping to workpiece, it is easy to be retained in hole because of the cutting that tap tapping generates, to influence holding for the screw tap
Continuous work.
Utility model content
In order to solve the above-mentioned technical problem, the utility model embodiment provides a kind of screw tap with good chip removal performance.
The utility model provides a kind of screw tap, comprising:
Knife handle；
First connecting portion, one end are fixedly connected with one end of the knife handle；
Processing department, one end are connect with the other end of the first connecting portion, and the processing department has central spindle, in the central spindle
It is provided with cutting edge, the cutting edge includes at least two protrusion areas and at least two smooth areas, the protrusion area and smooth area
It is surrounded on the rotation axis, and is arranged alternately, the rotation that the farthest point of rotation axis described in distance is formed in the protrusion area
The diameter of transition mark is greater than the diameter for the rotational trajectory that the farthest point of rotation axis described in distance in the smooth area is formed.
In some embodiments, the screw tap further includes second connecting portion, one end of the second connecting portion and described the
The other end of one interconnecting piece is fixedly connected, and the other end of the second connecting portion is fixedly connected with one end of the processing department.
In some embodiments, the knife handle is cylindrical, and the first connecting portion is in a circular table shape, the second connecting portion
Cylindrical, the diameter of the knife handle is greater than the diameter of the second connecting portion, the diameter of described first connecting portion one end end face
Equal to the diameter of the knife handle, the diameter of the first connecting portion the other end face is equal to the diameter of the second connecting portion.
In some embodiments, the diameter of the second connecting portion is less than in the smooth area rotation axis described in distance most
The diameter for the rotational trajectory that remote point is formed.
In some embodiments, the junction of two interconnecting piece and the processing department is provided with reinforcing rib.
In some embodiments, there are four the reinforcing rib is total to, uniformly it is surrounded on the side of the second connecting portion.
In some embodiments, the quantity of the protrusion area and smooth area is two.
In some embodiments, the quantity of the protrusion area and smooth area is four.
In some embodiments, the other end of the knife handle is provided with mounting portion, the mounting portion be used for lathe or its
He connects driving equipment, so that lathe or other driving equipments can drive the screw tap to rotate, the mounting portion is in cylinder
Shape, diameter are slightly less than the diameter of the knife handle.
In some embodiments, one end on the mounting portion far from the first connecting portion is provided with circular conical surface, described
The tilt angle of circular conical surface is 45 degree.
The beneficial effects of the utility model are: compared with prior art, the utility model provides a kind of screw tap, comprising:
Knife handle, first connecting portion and processing department, the first connecting portion are connected between the knife handle and processing department；The processing department
One end is connect with the other end of the first connecting portion, and the processing department has central spindle, is provided with cutting edge in the central spindle, institute
Stating cutting edge includes that at least two protrusion areas and at least two smooth areas, the protrusion area and smooth area are surrounded on the rotary shaft
Line, and be arranged alternately, the diameter for the rotational trajectory that the farthest point of rotation axis described in distance is formed in the protrusion area is greater than
The diameter for the rotational trajectory that the farthest point of rotation axis described in distance is formed in the smooth area.Based on above structure, using
During the screw tap carries out tapping, the cutting that tapping generates can be arranged smoothly by the gap between the inner wall and smooth area in hole
Out, so that the screw tap can continuous operation.
Detailed description of the invention
One or more embodiments are illustrated by the picture in corresponding attached drawing, these exemplary theorys
The bright restriction not constituted to embodiment, the element in attached drawing with same reference numbers label are expressed as similar element, remove
Non- to have special statement, composition does not limit the figure in attached drawing.
Fig. 1 is the structural representation perspective view of the utility model embodiment plug tap；
Fig. 2 is the structural representation side view of Fig. 1 plug tap；
Fig. 3 is the structural representation top view of Fig. 2 plug tap.
Specific embodiment
For the ease of understanding the utility model, with reference to the accompanying drawings and detailed description, the utility model is carried out more
Detailed description.It should be noted that it can be directly in another element when element is expressed " being fixed on " another element
Upper or placed in the middle there may be one or more therebetween elements.When an element is expressed " connection " another element, it can
To be directly to another element or elements placed in the middle there may be one or more therebetween.This specification is used
Term " on ", "lower", "inner", "outside", the instructions such as " bottom " orientation or positional relationship be orientation based on the figure or
Positional relationship is merely for convenience of describing the present invention and simplifying the description, rather than the device or member of indication or suggestion meaning
Part must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
In addition, term " first ", " second " " third " etc. are used for description purposes only, it is not understood to indicate or imply relatively important
Property.
Unless otherwise defined, technical and scientific term all used in this specification and the skill for belonging to the utility model
The normally understood meaning of the technical staff in art field is identical.Art used in the description of the utility model in this specification
Language is only for the purpose of describing specific embodiments, and is not intended to limitation the utility model.Art used in this specification
Language "and/or" includes any and all combinations of one or more related listed items.
In addition, as long as technical characteristic involved in the utility model different embodiments disclosed below is each other
Not constituting conflict can be combined with each other.
Referring to Fig. 1, Fig. 1 is the schematic perspective view of the utility model embodiment plug tap.The utility model is implemented
Example provides a kind of screw tap 100, including knife handle 10, first connecting portion 20, second connecting portion 30 and processing department 40, wherein described the
One end of one interconnecting piece 20 is fixedly connected with one end of the knife handle 10, and the other end and one end of the second connecting portion 30 are fixed
Connection, the other end of the second connecting portion 30 are fixedly connected with one end of the processing department 40.
Specifically, knife handle 10 is cylindrical body, screw tap 100 has rotation axis A, the axis weight of rotation axis A and knife handle 10
It closes.When being processed using screw tap 100, which is rotated around rotation axis A.
As shown in Fig. 2, the knife handle 10 is cylindrical, one end of one end of the knife handle 10 and the first connecting portion 20
It is fixedly connected, the other end is provided with mounting portion 11, and the mounting portion 11 with lathe or other driving equipments for connecting, to make
Obtaining lathe or other driving equipments can drive the screw tap 100 to rotate.The mounting portion 11 is cylindrical, and diameter is slightly less than institute
The diameter of knife handle 10 is stated, there are four plane, the screw tap 100 is installed on lathe or other for the side setting of the mounting portion 11
When driving equipment, the twisting resistance that four planes apply it by lathe or other driving equipments, so that the screw tap 100
It is rotated around rotation axis A.One end on the mounting portion 11 far from the first connecting portion 20 is provided with circular conical surface.It is preferred that
, the tilt angle of the circular conical surface is 45 degree.
The first connecting portion 20 is in a circular table shape, 20 one end end face of first connecting portion be circle, diameter be equal to or
It is slightly less than the diameter of the knife handle 10.
The second connecting portion 30 is cylindrical, the other end of the first connecting portion 20 and the one of the second connecting portion
End is fixedly connected, and the other end face of the first connecting portion 20 is circle, and diameter is equal to two interconnecting piece 30
Diameter.The diameter of the second connecting portion 30 is less than the diameter of the knife handle 10.The other end of the second connecting portion 30 and institute
The one end for stating processing department 40 is fixedly connected.Two interconnecting piece 30 and the junction of the processing department 40 are provided with reinforcing rib 31,
There are four the reinforcing rib is total, it is uniformly surrounded on the side of the second connecting portion 30.
The processing department 40 has a central spindle 41, is provided with cutting edge 42,42 winding of cutting edge in the central spindle 41
In the lateral surface of the central spindle 41.
Referring to Fig. 3, Fig. 3 is projection view of the screw tap 100 along the direction the rotation axis A, it is described in Fig. 3
The shape of the outer profile of cutting edge 42 is similar to diamond shape, and the cutting edge 42 includes protruding area 421 and smooth area 422, described convex
Out area 421 and smooth area 422 there are four, the protrusion area 421 and smooth area 422 are surrounded on the rotation axis A, and hand over
For setting.The rotational trajectory that rotation axis A described in distance farthest point is formed in the protrusion area 421 is the first motion profile,
First motion profile is round, a diameter of d1, and rotation axis A described in distance farthest point is formed in the smooth area 422
Rotational trajectory be the second motion profile, second motion profile and first motion profile are concentric circles, a diameter of
D2, and the diameter d1 of first motion profile is greater than the diameter d2 of second motion profile.Using the screw tap 100 into
When row tapping operation, inner wall of the cutting edge 42 by cutting hole, device to hole progress tapping.Practical device to hole in the cutting edge 42
Inner wall cut be the cutting edge 42 protrusion area 421, by first motion profile diameter d1 be greater than institute
State the diameter d2 of the second motion profile.Therefore the hole (hole is processed as threaded hole) processed by the protrusion area 421
Diameter is consistent with the diameter d1 of first motion profile.It follows that between having between the inner wall and smooth area 422 in above-mentioned hole
Gap, the chip that protrusion area 421 is cut can be discharged by the gap, be conducive to the continuous operation of the screw tap 100.
It is understood that the protrusion area 421 and smooth area 422 can be designed in some other embodiment
Two, the protrusion area 421 and smooth area 422 are surrounded on the rotation axis A, and are arranged alternately.Such structure may make
The gap having between the inner wall and smooth area 422 in hole is bigger, the discharge of chip is more conducive to, so as to improve screw tap
100 feed speed, and then shorten the time of the tapping of screw tap.
In some other above-mentioned embodiment, there are two protrusion areas 421 to compare with the screw tap of smooth area 422 for tool, this implementation
There are four protrusion area 421 and smooth areas 422 for example plug tap 100 tool.Such structure can be effectively reduced using the screw tap 100
In tapping process, the abrasion progress in protrusion area 421, to extend the service life of the screw tap 100.
Further, the quantity of the reinforcing rib 31 is four in the present embodiment, and four reinforcing ribs 31 are along described
The direction of rotation axis A is aligned with four protrusion areas 421.Obviously the mistake cut in the inner wall using protrusion 421 device to hole of area
Cheng Zhong protrudes area 421 by great resistance, and reinforcing rib 31 is corresponding with the position in the protrusion area 421, can reinforce protrusion area and exist
Rigidity on rotation axis direction prevents the screw tap from thus locating to be broken.
The diameter of the second connecting portion 30 is less than the diameter d2 of second motion profile.The benefit of such structure is:
It may make processing department 40 after the completion of tapping, extremely smoothly exited from the threaded hole of workpiece, prevent institute during exiting
It states knife handle 10 and encounters the inner sidewall in hole on workpiece, to influence the quality of tapping.
The beneficial effects of the utility model are: compared with prior art, the utility model provides a kind of screw tap, comprising:
Knife handle, first connecting portion and processing department, the first connecting portion are connected between the knife handle and processing department；The processing department
One end is connect with the other end of the first connecting portion, and the processing department has central spindle, is provided with cutting edge in the central spindle, institute
Stating cutting edge includes that at least two protrusion areas and at least two smooth areas, the protrusion area and smooth area are surrounded on the rotary shaft
Line, and be arranged alternately, the diameter for the rotational trajectory that the farthest point of rotation axis described in distance is formed in the protrusion area is greater than
The diameter for the rotational trajectory that the farthest point of rotation axis described in distance is formed in the smooth area.Based on above structure, using
During the screw tap carries out tapping, the cutting that tapping generates can be arranged smoothly by the gap between the inner wall and smooth area in hole
Out, be conducive to the continuous operation of the screw tap.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；
Under the thinking of the utility model, it can also be combined between the technical characteristic in above embodiments or different embodiments,
Step can be realized with random order, and there are many other variations of the different aspect of the utility model as described above, be
Simplicity, they do not provide in details；Although the utility model is described in detail with reference to the foregoing embodiments, this
The those of ordinary skill in field it is understood that it is still possible to modify the technical solutions described in the foregoing embodiments,
Or equivalent replacement of some of the technical features；And these are modified or replaceed, and do not make the sheet of corresponding technical solution
Matter departs from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. a kind of screw tap has rotation axis characterized by comprising
Knife handle；
First connecting portion, one end are fixedly connected with one end of the knife handle；
Processing department, one end are connect with the other end of the first connecting portion, and the processing department has central spindle, are arranged in the central spindle
There is cutting edge, the cutting edge includes at least two protrusion areas and at least two smooth areas, and the protrusion area and smooth area are surround
It in the rotation axis, and is arranged alternately, the rotation rail that the farthest point of rotation axis described in distance is formed in the protrusion area
The diameter of mark is greater than the diameter for the rotational trajectory that the farthest point of rotation axis described in distance in the smooth area is formed.
2. screw tap according to claim 1, which is characterized in that the screw tap further includes second connecting portion, and described second connects
One end of socket part is fixedly connected with the other end of the first connecting portion, the other end of the second connecting portion and the processing department
One end be fixedly connected.
3. screw tap according to claim 2, which is characterized in that the knife handle is cylindrical, and the first connecting portion is in circle
Mesa-shaped, the second connecting portion is cylindrical, and the diameter of the knife handle is greater than the diameter of the second connecting portion, and described first connects
The diameter of socket part one end end face is equal to the diameter of the knife handle, and the diameter of the first connecting portion the other end face is equal to described the
The diameter of two interconnecting pieces.
4. screw tap according to claim 3, which is characterized in that the diameter of the second connecting portion is less than in the smooth area
The diameter for the rotational trajectory that the point farthest apart from the rotation axis is formed.
5. screw tap according to claim 4, which is characterized in that the junction of two interconnecting piece and the processing department is arranged
There is reinforcing rib.
6. screw tap according to claim 5, which is characterized in that there are four the reinforcing rib is total, be uniformly surrounded on described
The side of second connecting portion.
7. screw tap according to claim 1, which is characterized in that the quantity of the protrusion area and smooth area is two.
8. screw tap according to claim 1, which is characterized in that the quantity of the protrusion area and smooth area is four.
9. screw tap according to claim 1 to 8, which is characterized in that the other end of the knife handle is provided with installation
Portion, the mounting portion with lathe or other driving equipments for connecting, so that lathe or other driving equipments can drive institute
Screw tap rotation is stated, the mounting portion is cylindrical, and diameter is slightly less than the diameter of the knife handle.
10. screw tap according to claim 9, which is characterized in that the one of the separate first connecting portion on the mounting portion
End is provided with circular conical surface, and the tilt angle of the circular conical surface is 45 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820861213.7U CN208289158U (en) | 2018-06-05 | 2018-06-05 | Screw tap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820861213.7U CN208289158U (en) | 2018-06-05 | 2018-06-05 | Screw tap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208289158U true CN208289158U (en) | 2018-12-28 |
Family
ID=64723681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820861213.7U Expired - Fee Related CN208289158U (en) | 2018-06-05 | 2018-06-05 | Screw tap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208289158U (en) |
-
2018
- 2018-06-05 CN CN201820861213.7U patent/CN208289158U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181228 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |