CN207857994U - A kind of small-bore trapezoidal thread thread forming tap - Google Patents
A kind of small-bore trapezoidal thread thread forming tap Download PDFInfo
- Publication number
- CN207857994U CN207857994U CN201721735425.2U CN201721735425U CN207857994U CN 207857994 U CN207857994 U CN 207857994U CN 201721735425 U CN201721735425 U CN 201721735425U CN 207857994 U CN207857994 U CN 207857994U
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- thread
- leader
- small
- working portion
- bore
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Abstract
The utility model discloses a kind of small-bore trapezoidal thread thread forming taps, including leader, working portion, retained part and limit part, further include through leader and working portion and leading to the V-type chip-breaker of retained part, leader and working portion are both provided with trapezoidal thread, for the screw thread cylinder of leader with axis at 5 °~10 °, the screw thread cylinder of working portion is parallel with axis.The beneficial effects of the utility model are：The intensity and rigidity for improving screw tap, solve the problems, such as screw tap frangibility, improve the service life of screw tap；The cutting ability and chip resistance of screw tap are improved, ensures the quality and efficiency of screw tap processing.
Description
Technical field
The utility model is related to machine tools technical fields more particularly to a kind of small-bore trapezoidal thread to squeeze silk
Cone.
Background technology
Material is QSn4-3 bronze, and material wearability is good, and viscosity is big, and technique processability is poor, as trapezoidal internal thread Tr5 ×
1 major diameter Φ 5, central diameter Φ 4.4, path Φ 3.8, the depth of thread 25 belong to small-bore trapezoidal thread deep hole machining, difficulty of processing
Greatly.Existing special trapezoidal internal thread screw tap, since the chip pocket of its working portion is 3 slots, chip pocket, which accounts for screw tap, integrally to be compared
Example is larger, and screw tap intensity is poor, and work in-process, chip breaking is poor, and the rigidity and intensity of screw tap are insufficient, the easily viscous bits of work in-process,
Screw tap frangibility.Part processing quality cannot meet technology requirement.
Utility model content
The purpose of this utility model is that：A kind of small-bore trapezoidal thread thread forming tap is proposed, the intensity of screw tap is improved
And rigidity, it solves the problems, such as screw tap frangibility, improves the service life of screw tap；The cutting ability and chip resistance of screw tap are improved, is protected
Demonstrate,prove the quality and efficiency of screw tap processing.
In order to solve the above technical problems, the utility model uses following technical solution：
A kind of small-bore trapezoidal thread thread forming tap, including it is arranged in order the leader, working portion, clamping part of composition
Point and limit part, further include through leader and working portion and leading to the V-type chip-breaker of retained part, leader
It is both provided with trapezoidal thread with working portion, the screw thread cylinder of leader and axis are at 5 °~10 °, the threaded post of working portion
Face is parallel with axis.
Preferably, the screw thread cylinder of leader and axis are at 7.5 °.
Preferably, material for taps W18Cr4V.
Preferably, chip-breaker is symmetrical 2.
Preferably, one end of the disconnected retained part of limit part is circular cone column.
Preferably, the cone angle of circular cone column is 75 °.
The beneficial effects of the utility model are：The intensity and rigidity of Acme thread tap are improved, Acme thread tap frangibility is solved
The problem of, improve the service life of Acme thread tap；The cutting ability and chip resistance of Acme thread tap are improved, ensures Acme thread tap processing
Quality and efficiency.
Description of the drawings
Fig. 1 is that the structural diagrams of the utility model are intended to.
Fig. 2 is part A enlarged diagram in Fig. 1.
In figure：1- leaders, 2- working portions, 3- retained parts, 4- limit parts, 41- circular cone columns, 5-V type chip breaking
Slot.
Specific implementation mode
Below in conjunction with attached drawing, the technical scheme in the utility model embodiment is clearly and completely described, shows
So, the described embodiments are only a part of the embodiments of the utility model, instead of all the embodiments.
As shown in Figs. 1-2, a kind of small-bore trapezoidal thread thread forming tap, including it is arranged in order the leader 1 of composition, work
Make part 2, retained part 3 and limit part 4, further includes through leader 1 and working portion 2 and leading to retained part
V-type chip-breaker 5, leader 1 and working portion 2 are both provided with trapezoidal thread, the screw thread cylinder of leader and axis at
7.5 °, the screw thread cylinder of working portion is parallel with axis, material for taps W18Cr4V, and chip-breaker 5 is symmetrical 2, limiting section
It is circular cone column 41 to divide one end of 4 disconnected retained part 3, and cone angle is 75 °.
In order to which clamping processes part, limit part 4 can prevent from rotating when its processing；Circular cone column 41 is for preventing processing zero
The central axes play of part；Chip-breaker 5 act as chip breaking and chip removal.The above, only the utility model are preferably specific real
Mode is applied, but protection scope of the utility model is not limited thereto, and any one skilled in the art is in this reality
In technical scope with novel exposure, technical solution and its utility model according to the present utility model design be subject to equivalent replacement or
Change, should be covered within the scope of the utility model.
Claims (6)
1. a kind of small-bore trapezoidal thread thread forming tap, including it is arranged in order the leader (1), working portion (2), folder of composition
Hold part (3) and limit part (4), it is characterised in that：Further include through leader (1) and working portion (2) and leading to
The V-type chip-breaker (5) of retained part (3), the leader (1) and working portion (2) are both provided with trapezoidal thread, described to draw
The screw thread cylinder with axis of partly (1) are led into 5 °~10 °, the screw thread cylinder of the working portion (2) is parallel with axis.
2. a kind of small-bore trapezoidal thread thread forming tap as described in claim 1, it is characterised in that：The leader (1)
Screw thread cylinder and axis at 7.5 °.
3. a kind of small-bore trapezoidal thread thread forming tap as described in claim 1, it is characterised in that：The material for taps is
W18Cr4V。
4. a kind of small-bore trapezoidal thread thread forming tap as described in claim 1, it is characterised in that：The V-type chip-breaker (5)
It is symmetrical 2.
5. a kind of small-bore trapezoidal thread thread forming tap as described in claim 1, it is characterised in that：The limit part (4)
Disconnected retained part (3) one end be circular cone column (41).
6. a kind of small-bore trapezoidal thread thread forming tap as claimed in claim 5, it is characterised in that：The circular cone column (41)
Cone angle is 75 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721735425.2U CN207857994U (en) | 2017-12-13 | 2017-12-13 | A kind of small-bore trapezoidal thread thread forming tap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721735425.2U CN207857994U (en) | 2017-12-13 | 2017-12-13 | A kind of small-bore trapezoidal thread thread forming tap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207857994U true CN207857994U (en) | 2018-09-14 |
Family
ID=63468859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721735425.2U Active CN207857994U (en) | 2017-12-13 | 2017-12-13 | A kind of small-bore trapezoidal thread thread forming tap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207857994U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107999904A (en) * | 2017-12-13 | 2018-05-08 | 贵州新安航空机械有限责任公司 | A kind of small-bore trapezoidal thread thread forming tap |
-
2017
- 2017-12-13 CN CN201721735425.2U patent/CN207857994U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107999904A (en) * | 2017-12-13 | 2018-05-08 | 贵州新安航空机械有限责任公司 | A kind of small-bore trapezoidal thread thread forming tap |
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| GR01 | Patent grant |