CN208483335U - Screw tap - Google Patents
Screw tap Download PDFInfo
- Publication number
- CN208483335U CN208483335U CN201820860961.3U CN201820860961U CN208483335U CN 208483335 U CN208483335 U CN 208483335U CN 201820860961 U CN201820860961 U CN 201820860961U CN 208483335 U CN208483335 U CN 208483335U
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- CN
- China
- Prior art keywords
- screw tap
- diameter
- interconnecting piece
- processing department
- area
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Abstract
The utility model relates to drilling device technical fields, provide a kind of screw tap, comprising: knife handle, interconnecting piece, processing department and tip, wherein one end of interconnecting piece is fixedly connected with one end of knife handle；One end of processing department and the other end of interconnecting piece connect, cutting edge is provided in the central spindle of processing department, cutting edge includes at least two protrusion areas and at least two smooth areas, protrusion area and smooth area are surrounded on rotation axis, and it is arranged alternately, the diameter for protruding the rotational trajectory that point farthest apart from rotation axis in area is formed is greater than the diameter for the rotational trajectory that point farthest apart from rotation axis in smooth area is formed；Tip is fixedly connected on the other end of processing department.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；
Interconnecting piece, one end are fixedly connected with one end of the knife handle；
Processing department, one end are connect with the other end of the interconnecting piece, 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；
Tip, the tip are fixedly connected on the other end of the processing department.
In some embodiments, in the processing department close to the tip one end cutting edge, along the rotation axis
Towards the tip direction, the diameter of the diameter of first motion profile and second motion profile is gradually become smaller.
In some embodiments, the knife handle is cylindrical, and the interconnecting piece is cylindrical, and the diameter of the knife handle is greater than
The diameter of the interconnecting piece.
In some embodiments, the joint face that the tip is connect with the processing department is circle, and diameter is equal to described
The other end face of processing department.
In some embodiments, the junction of the 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 interconnecting piece.
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 less than the diameter of the knife handle.
In some embodiments, one end on the mounting portion far from the interconnecting piece is provided with circular conical surface, the circular cone
The tilt angle in face 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, interconnecting piece, processing department and tip, wherein one end of interconnecting piece is fixedly connected with one end of the knife handle；The one of processing department
End is connect with the other end of the interconnecting piece, and the processing department has central spindle, is provided with cutting edge, the cutting in the central spindle
Sword is surrounded on the rotation axis including at least two protrusion areas and at least two smooth areas, the protrusion area and smooth area, and
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 described flat
The diameter for the rotational trajectory that the farthest point of rotation axis described in distance is formed on skating area；The tip is fixedly connected on the processing
The other end in portion.Based on above structure, during carrying out tapping using the screw tap, the cutting that tapping generates can be smoothly
By between the inner wall and smooth area in hole gap discharge 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, interconnecting piece 20, processing department 30 and tip 40, wherein the one of the interconnecting piece 20
End is fixedly connected with one end of the knife handle 10, and the other end is fixedly connected with one end of the processing department 30, the processing department 30
The other end be fixedly connected with the tip 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 the knife handle 10 and one end of the interconnecting piece 20 are fixed
Connection, the other end are provided with mounting portion 11, and the mounting portion 11 with lathe or other driving equipments for connecting, so that machine
Bed or other driving equipments can drive the screw tap 100 to rotate.The mounting portion 11 is cylindrical, and diameter is slightly less than the knife
The diameter of handle 10, there are four plane, the screw tap 100 is installed on lathe or other drivings for the side setting of the mounting portion 11
When equipment, the twisting resistance that four planes apply it by lathe or other driving equipments, so that the screw tap 100 is around rotation
Shaft axis A is rotated.One end on the mounting portion 11 far from the interconnecting piece 20 is provided with circular conical surface.Preferably, described
The tilt angle of circular conical surface is 45 degree.
The interconnecting piece 20 is cylindrical, and one end of the other end of the interconnecting piece 20 and the processing department 30 is fixed to be connected
It connects, the diameter of the interconnecting piece 20 is less than the diameter of the knife handle 10.The junction of the interconnecting piece 20 and the knife handle 10 is set
It is equipped with chamfering, for preventing stress from concentrating.
The processing department 30 has a central spindle 31, is provided with cutting edge 32,32 winding of cutting edge in the central spindle 31
In the lateral surface of the central spindle 31.
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 32 is similar to diamond shape, and the cutting edge 32 includes protruding area 321 and smooth area 322, described convex
Out area 321 and smooth area 322 there are four, the protrusion area 321 and smooth area 322 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 321 is the first motion profile,
First motion profile is circle, and the rotational trajectory that rotation axis A described in distance farthest point is formed in the smooth area 322 is
Second motion profile, second motion profile and first motion profile are concentric circles, and first motion profile
Straight d1 be greater than second motion profile diameter d2.When carrying out tapping operation using the screw tap 100, the cutting edge 32
By the inner wall of cutting hole, device to hole carries out tapping.What the inner wall of practical device to hole was cut in the cutting edge 32 is described cut
The protrusion area 321 for cutting sword 32, since the diameter d1 of first motion profile is greater than the diameter d2 of second motion profile.Cause
The diameter in this hole (hole is processed as threaded hole) processed by the protrusion area 321 is straight with first motion profile
Diameter d1 is consistent.It follows that there is gap between the inner wall and smooth area 322 in above-mentioned hole, the chip that protrusion area 321 is cut
It can be discharged by the gap, be conducive to the continuous operation of the screw tap 100.
It is understood that the protrusion area 321 and smooth area 322 can be designed in some other embodiment
Two, the protrusion area 321 and smooth area 322 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 322 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 321 to compare with the screw tap of smooth area 322 for tool, this implementation
There are four protrusion area 321 and smooth areas 322 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 321, to extend the service life of the screw tap 100.
Further, diameter d2 of the diameter of the interconnecting piece 20 less than the second motion profile.Such structure it is good
Place is: may make processing department 30 after the completion of tapping, extremely smoothly exits from the threaded hole of workpiece, prevents from exiting process
Described in knife handle 10 encounter the inner sidewall in hole on workpiece, to influence the quality of tapping.
The tip 40 is in coniform, and the joint face that the tip 40 connect with the processing department 30 is round, diameter
Equal to the other end face of the processing department 30.It is the structural representation side view of screw tap referring to Fig. 2, Fig. 2.The processing
The other end in portion 30 is in frustum.Specifically, in the processing department 30 close to the tip 40 one end cutting edge 32, edge
The rotation axis A towards 40 direction of tip, the diameter d1 of first motion profile and second motion profile
Diameter d2 gradually becomes smaller.The advantages of such structure, is, during carrying out tapping using the screw tap 100, necessarily cuts
The more early inner wall with hole in part in protrusion area 321 in sword 32 closer to tip 40 rubs.With 100 tapping of screw tap
Progress, the diameter d1 of first motion profile in the protrusion area 321 to rub with the inner wall of the opening in hole becomes larger, attacks
During silk, it is stepped up the cutting depth of device to hole opening inner wall, the screw tap 100 may make more smoothly to enter hole
Inside avoids screw tap 100 from tilting, or due to larger with the cutting depth of the inner wall in hole at the beginning, screw tap 100 is caused to bear
Torque is larger, is broken screw tap.
Preferably, the diameter of the knife handle 10 is 10 millimeters, and the length of the processing department 30 is 14 millimeters, the screw tap
100 length is 52 millimeters, and the interconnecting piece 20, processing department 30 and the total length of tip 40 are 16 millimeters.
Further, in some other embodiment, the interconnecting piece 20 and the junction of the processing department 30 are provided with
Reinforcing rib (not shown).The quantity of the reinforcing rib is four, and four reinforcing ribs are along the direction and four of the rotation axis A
A protrusion area 321 is aligned.Obviously during the inner wall using protrusion 321 device to hole of area is cut, area 321 is protruded by pole
Big resistance, reinforcing rib is corresponding with the position in the protrusion area 321, can reinforce protruding rigidity of the area on rotation axis direction,
Prevent the screw tap from thus locating to be broken.
The beneficial effects of the utility model are: compared with prior art, the utility model provides a kind of screw tap, comprising:
Knife handle, interconnecting piece, processing department and tip, wherein one end of interconnecting piece is fixedly connected with one end of the knife handle；The one of processing department
End is connect with the other end of the interconnecting piece, and the processing department has central spindle, is provided with cutting edge, the cutting in the central spindle
Sword is surrounded on the rotation axis including at least two protrusion areas and at least two smooth areas, the protrusion area and smooth area, and
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 described flat
The diameter for the rotational trajectory that the farthest point of rotation axis described in distance is formed on skating area；The tip is fixedly connected on the processing
The other end in portion.Based on above structure, during carrying out tapping using the screw tap, the cutting that tapping generates can be smoothly
By between the inner wall and smooth area in hole gap discharge so that the screw tap can continuous operation.
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；
Interconnecting piece, one end are fixedly connected with one end of the knife handle；
Processing department, one end are connect with the other end of the interconnecting piece, and the processing department has central spindle, are provided with and are cut in the central spindle
Sword is cut, the cutting edge includes that at least two protrusion areas and at least two smooth areas, the protrusion area and smooth area are surrounded on institute
Rotation axis is stated, and is arranged alternately, the rotational trajectory that the farthest point of rotation axis described in distance is formed in the protrusion area is
First motion profile, the rotational trajectory that the farthest point of rotation axis described in distance is formed in the smooth area are the second movement rail
Mark, the diameter of first motion profile are greater than the diameter of the second motion profile；
Tip, the tip are fixedly connected on the other end of the processing department.
2. screw tap according to claim 1, which is characterized in that the cutting of one end of the close tip in the processing department
Sword, along the rotation axis towards the tip direction, the diameter of first motion profile and second motion profile
Diameter gradually becomes smaller.
3. screw tap according to claim 2, which is characterized in that the knife handle is cylindrical, and the interconnecting piece is cylindrical,
The diameter of the knife handle is greater than the diameter of the interconnecting piece.
4. screw tap according to claim 3, which is characterized in that the joint face that the tip is connect with the processing department is circle
Shape, diameter are equal to the other end face of the processing department.
5. screw tap according to claim 4, which is characterized in that the interconnecting piece and the junction of the processing department are provided with
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 interconnecting piece.
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 driving equipment for connecting, so that driving equipment can drive the screw tap to rotate, the mounting portion
Cylindrical, diameter is less than the diameter of the knife handle.
10. screw tap according to claim 9, which is characterized in that one end on the mounting portion far from the interconnecting piece is set
It is equipped with circular conical surface, the tilt angle of the circular conical surface is 45 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820860961.3U CN208483335U (en) | 2018-06-05 | 2018-06-05 | Screw tap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820860961.3U CN208483335U (en) | 2018-06-05 | 2018-06-05 | Screw tap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208483335U true CN208483335U (en) | 2019-02-12 |
Family
ID=65250851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820860961.3U Expired - Fee Related CN208483335U (en) | 2018-06-05 | 2018-06-05 | Screw tap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208483335U (en) |
-
2018
- 2018-06-05 CN CN201820860961.3U patent/CN208483335U/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: 20190212 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |