CN209654397U - A kind of Thread-cutting screw - Google Patents
A kind of Thread-cutting screw Download PDFInfo
- Publication number
- CN209654397U CN209654397U CN201822060837.1U CN201822060837U CN209654397U CN 209654397 U CN209654397 U CN 209654397U CN 201822060837 U CN201822060837 U CN 201822060837U CN 209654397 U CN209654397 U CN 209654397U
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- spiral shell
- screw
- thread
- shell body
- teeth
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Abstract
The utility model discloses a kind of Thread-cutting screws, it is related to fastener areas, including screw head, spiral shell body and spiral shell tail, two internal screw threads have at least been wholely set on spiral shell body and spiral shell tail, an external screw teeth has also at least been wholely set on spiral shell body and spiral shell tail, the radius of internal screw thread is less than the radius of external screw teeth, forms the collecting tank for collecting waste residue between adjacent internal screw thread.There are problems that the waste residue that tapping generates influences threaded hole molding the prior art, the utility model passes through setting external screw teeth and internal screw thread, tapping is carried out using external screw teeth, form threaded hole, internal screw thread consolidates the molding of threaded hole internal diameter, meanwhile, the waste residue squeezed out is collected using the collecting tank formed between internal screw thread, to effectively improve the Forming Quality of threaded hole, enhance the bonding strength of screw.
Description
Technical field
The utility model relates to fastener areas, more specifically, it relates to a kind of Thread-cutting screw.
Background technique
When carrying out installing fixed to aluminum alloy doors and windows, it will usually use screw, screw as a kind of general components,
It is widely used for connecting the plate of various materials.
For existing bolt structure, such as the Chinese patent that patent publication No. is CN206636904U, it discloses one kind
High temperature resistant screw special, including screw rod, screw rod one end connect head, and head is in awl shape, screw rod other end coupling nut, nut
Centre is equipped with cross pattern or line of blooming, and screw rod and nut junction are equipped with mini level meter, and screw rod and nut pass through welding form
Connection, mini level meter are located at weld, and head diameter is greater than screw rod, diameter proportion 3:2；The length on head is the 1/ of screw rod
3, screw surface is equipped with screw thread.
Above-mentioned patent is in use, first with screw thread to blind hole tapping, then realizes connection.During tapping, screw thread is squeezed
The waste residue of blind hole inner wall, extrusion remains in the thread groove to be formed, and with the rotation of screw thread, moves in thread groove.Due to
Waste residue has certain hardness, and particularly with metal material, waste residue is rotated with screw, then scratches threaded hole inner wall, influences
Threaded hole Forming Quality then reduces the bonding strength of screw.
Utility model content
There are problems that the waste residue that tapping generates influences threaded hole molding the prior art, the purpose of this utility model is
A kind of Thread-cutting screw is provided, convenient for collecting the waste residue that tapping generates, improves threaded hole Forming Quality, the connection for enhancing screw is strong
Degree.
To achieve the above object, the utility model provides following technical solution:
Two have at least been wholely set on a kind of Thread-cutting screw, including screw head, spiral shell body and spiral shell tail, the spiral shell body and the spiral shell tail
Internal screw thread has also at least been wholely set an external screw teeth on the spiral shell body and the spiral shell tail, and the radius of the internal screw thread is less than
The radius of the external screw teeth forms the collecting tank for collecting waste residue between the adjacent internal screw thread.
Through the above technical solutions, carrying out tapping using external screw teeth, threaded hole is formed, internal screw thread scrapes threaded hole inner wall,
Consolidate the molding of threaded hole internal diameter, while the waste residue that tapping is generated is collected in collecting tank, the waste residue for avoiding tapping from generating follows
Thread moves in thread groove, scratches thread groove, improves the Forming Quality of threaded hole, enhance the bonding strength of screw.
Further, the screw pitch of the internal screw thread is greater than the screw pitch of the external screw teeth.
Through the above technical solutions, internal screw thread is greater than the circle number of external screw teeth rotation relative to threaded hole turnning circle, increase
Internal screw thread scrapes the number of threaded hole internal diameter, improves the Forming Quality of threaded hole.
Further, the spiral shell body side wall offers through-hole between the adjacent internal screw thread.
Through the above technical solutions, opening up through-hole for enhancing the capacity of collecting tank, convenient for collecting more waste residues.
Further, accommodating chamber is offered in the spiral shell body, the through-hole is connected to the accommodating chamber.
Through the above technical solutions, in use, if the waste residue in single collecting tank is excessive, excessive waste residue in collecting tank
It is pressed by through-hole to accommodating chamber.
Further, the Luo Weicebi offers notch along far from the direction at the top of it, and the notch runs through institute simultaneously
State internal screw thread and the external screw teeth.
Through the above technical solutions, notch can effectively enhance the cutting ability of external screw teeth, the Forming Quality of threaded hole is improved.
Further, the screw head is offered far from the side of the spiral shell body convenient for turning the slot that turns of the spiral shell body, institute
It states to turn and offers chamfering at channel opening.
It is convenient for turning spiral shell body by tool through the above technical solutions, turning slot；Chamfering is for guiding screwing tool to be inserted into
To turning in slot.
Further, the screw head is in mesa-shaped, and side of the screw head far from the spiral shell body is in regular hexagon, the screw head
It is circle close to the side of the spiral shell body, and is integrally fixed with the spiral shell body.
Through the above technical solutions, screw head is set as regular hexagon far from the side of spiral shell body, convenient for passing through spanner or vice
Turn screw head.
Further, the screw head side wall is radially integrally fixed with multiple raised lines
Through the above technical solutions, in use, screw head is pressed on the opening of threaded hole as spiral shell body is threaded into slot
Place, raised line increase the roughness of screw head, loosening after avoiding spiral shell body from being threaded into hole.
Further, the internal screw thread and the external screw teeth all extend to the tip of the spiral shell tail.
Through the above technical solutions, carrying out tapping convenient for turning spiral shell body.
Compared with prior art, the utility model has the beneficial effects that
(1) tapping, internal screw thread tapping female bore internal diameter are carried out by external screw teeth, and the waste residue that tapping is generated is collected in interior spiral shell
Between tooth, waste residue is avoided to scratch molding thread groove, improves thread groove Forming Quality, enhance the bonding strength of the utility model；
(2) further, by opening up through-hole and accommodating chamber, excessive waste residue is after being squeezed in collecting tank, into appearance
It receives intracavitary, increases the collecting amount of waste residue；
(3) further, by opening up notch, enhance externally threaded chip performance, be conducive to external screw thread and complete tapping shape
At threaded hole.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is the cross-sectional view of the utility model.
Appended drawing reference: 1, screw head；2, spiral shell body；3, spiral shell tail；4, internal screw thread；5, external screw teeth；6, collecting tank；7, through-hole；8, hold
Receive chamber；9, notch；10, slot is turned；11, chamfering；12, raised line.
Specific embodiment
In order to keep the purpose of this utility model, technical scheme and beneficial effects clearer, below with reference to embodiment and attached
The utility model is described in further detail for figure, but the embodiments of the present invention is not limited only to this.
As shown in Figure 1, a kind of Thread-cutting screw, including screw head 1, spiral shell body 2 and the spiral shell tail 3 successively integrally fixed, spiral shell body 2 and spiral shell
3 side of tail is integrally fixed with six internal screw threads 4, is also integrally fixed with an external screw teeth 5 on spiral shell body 2 and spiral shell tail 3, internal screw thread 4
Radius is less than the radius of external screw teeth 5, and the screw pitch of internal screw thread 4 is greater than the screw pitch of external screw teeth 5, is formed and is used between adjacent internal screw thread 4
In the collecting tank 6 for collecting waste residue.In use, external screw teeth 5 forms threaded hole, internal screw thread 4 is used for for squeezing hole inner wall to be processed
Threaded hole internal diameter is scraped, and the waste residue scraped is collected in collecting tank 6, threaded hole Forming Quality is improved, to enhance
The bonding strength of the utility model.Internal screw thread 4 and external screw teeth 5 all extend to the tip of spiral shell tail 3, are easier to spiral shell tail 3 being screwed into use.
As depicted in figs. 1 and 2, accommodating chamber 8 is offered in spiral shell body 2, accommodating chamber 8 is cylindrical, and 2 side wall of spiral shell body is in adjacent interior
Through-hole 7 is offered between thread 4, through-hole 7 is located in collecting tank 6 simultaneously, and through-hole 7 is connected to accommodating chamber 8, excessive in collecting tank 6
Waste residue be squeezed after collected in accommodating chamber 8 by through-hole 7, avoid waste residue in collecting tank 6 excessive.
3 side wall of spiral shell tail offers notch 9 along far from the direction at the top of it, and cut hole section is triangular in shape, and notch 9 runs through simultaneously
Internal screw thread 4 and external screw teeth 5, production easy to process can improve the cutting energy of external screw teeth 5 due to offering notch 9 on external screw teeth 5
Power improves the Forming Quality of threaded hole.Screw head 1 is offered far from the side of spiral shell body 2 turns slot 10 convenient for turn spiral shell body 2, twists
Dynamic slot 10 is regular hexagon, turns 10 opening of slot and offers chamfering 11, is inserted into convenient for screwing tool.Screw head 1 is in mesa-shaped, screw head
1 side far from spiral shell body 2 is in regular hexagon, and through grinding process at six angles, screw head 1 is circle close to the side of spiral shell body 2,
And it is integrally fixed with spiral shell body 2, spiral shell body 2 is cylindrical, and 1 side wall of screw head is radially integrally fixed with multiple raised lines 12, this is practical
It is novel be threaded into hole after, raised line 12 is depressed into threaded hole opening, loosens after avoiding screw-driving.
In summary:
When utility model works, external screw teeth 5 is used for tapping female bore outer diameter, 4 tapping female bore internal diameter of internal screw thread, and by tapping
The waste residue of generation is collected between adjacent internal screw thread 4, and waste residue is avoided to scratch molding thread groove, improves thread groove Forming Quality,
Enhance the bonding strength of the utility model；By opening up through-hole 7 and accommodating chamber 8, excessive waste residue is being squeezed in collecting tank 6
Afterwards, into accommodating chamber 8, increase the collecting amount of waste residue；By opening up notch 9, enhances externally threaded chip performance, be conducive to outer
Screw thread completes tapping and forms threaded hole.
The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited merely to
Above-described embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should refer to
Out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and
Retouching, these improvements and modifications also should be regarded as the protection scope of the utility model.
Claims (9)
1. a kind of Thread-cutting screw, including screw head (1), spiral shell body (2) and spiral shell tail (3), which is characterized in that the spiral shell body (2) and described
It has at least been wholely set two internal screw threads (4) on spiral shell tail (3), has also at least been wholely set on the spiral shell body (2) and the spiral shell tail (3)
There is an external screw teeth (5), the radius of the internal screw thread (4) is less than the radius of the external screw teeth (5), the adjacent internal screw thread (4)
Between form the collecting tank (6) for collecting waste residue.
2. a kind of Thread-cutting screw according to claim 1, which is characterized in that the screw pitch of the internal screw thread (4) is greater than described
The screw pitch of external screw teeth (5).
3. a kind of Thread-cutting screw according to claim 1, which is characterized in that spiral shell body (2) side wall is in adjacent described interior
Through-hole (7) are offered between thread (4).
4. a kind of Thread-cutting screw according to claim 3, which is characterized in that offer accommodating chamber in the spiral shell body (2)
(8), the through-hole (7) is connected to the accommodating chamber (8).
5. a kind of Thread-cutting screw according to claim 1, which is characterized in that spiral shell tail (3) side wall is along far from its top
Direction offer notch (9), the notch (9) simultaneously run through the internal screw thread (4) and the external screw teeth (5).
6. a kind of Thread-cutting screw according to claim 1, which is characterized in that the screw head (1) is far from the spiral shell body (2)
Side offers to turn turning slot (10) for the spiral shell body (2), and described slot (10) opening that turns offers chamfering (11).
7. a kind of Thread-cutting screw according to claim 1, which is characterized in that the screw head (1) is in mesa-shaped, the screw head
(1) side far from the spiral shell body (2) is in regular hexagon, and the screw head (1) is circle close to the side of the spiral shell body (2), and
Integrally it is fixed with the spiral shell body (2).
8. a kind of Thread-cutting screw according to claim 7, which is characterized in that screw head (1) side wall is radially integrated
It is fixed with multiple raised lines (12).
9. a kind of Thread-cutting screw according to claim 1, which is characterized in that the internal screw thread (4) and the external screw teeth (5)
All extend to the tip of the spiral shell tail (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822060837.1U CN209654397U (en) | 2018-12-08 | 2018-12-08 | A kind of Thread-cutting screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822060837.1U CN209654397U (en) | 2018-12-08 | 2018-12-08 | A kind of Thread-cutting screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209654397U true CN209654397U (en) | 2019-11-19 |
Family
ID=68517843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822060837.1U Active CN209654397U (en) | 2018-12-08 | 2018-12-08 | A kind of Thread-cutting screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209654397U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022167004A1 (en) * | 2021-02-05 | 2022-08-11 | 宁波辉禹照明有限公司 | Multi-purpose screw |
| CN115488081A (en) * | 2022-09-13 | 2022-12-20 | 上海外高桥造船有限公司 | Internal thread cleaning device and cleaning method |
-
2018
- 2018-12-08 CN CN201822060837.1U patent/CN209654397U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022167004A1 (en) * | 2021-02-05 | 2022-08-11 | 宁波辉禹照明有限公司 | Multi-purpose screw |
| CN115488081A (en) * | 2022-09-13 | 2022-12-20 | 上海外高桥造船有限公司 | Internal thread cleaning device and cleaning method |
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