CN208858722U - Tapping screw - Google Patents
Tapping screw Download PDFInfo
- Publication number
- CN208858722U CN208858722U CN201820983857.3U CN201820983857U CN208858722U CN 208858722 U CN208858722 U CN 208858722U CN 201820983857 U CN201820983857 U CN 201820983857U CN 208858722 U CN208858722 U CN 208858722U
- Authority
- CN
- China
- Prior art keywords
- nail
- head
- tapping
- screw rod
- block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
Abstract
The utility model discloses tapping screws, are related to screw field, including the head of a nail, head of a nail side is provided with screw rod, and screw rod is provided with far from one end of the head of a nail and attacks block, and the radius for attacking block gradually becomes smaller along the direction far from the head of a nail, it attacks block side and is provided with tapping, offer slot scraping on tapping.There are problems that waste residue influences thread forming the prior art, the utility model on tapping by opening up slot scraping, the waste residue generated in tapping process is discharged by way of scraping, avoids remaining residue in hole inner thread to be processed, effectively improves the quality of tapping thread.
Description
Technical field
The utility model relates to screw fields, more specifically, it relates to tapping screw.
Background technique
Tapping screw is voluntarily to attack the one kind for drilling out negative thread in the prebored hole of material to have threaded fasteners, is mainly used for connecting
Connect thin metal plate or non-metal board.
For existing tapping screw, such as the Chinese patent that patent publication No. is CN204106186U, it discloses one kind
For the screw tap of Atlas vertebral pedicle screw, including longitudinal assister bar and tapping bar, the side of longitudinal main upright bar is arranged in tapping bar
Center, the head of tapping bar is cone shape, and the head of tapping bar is the plane after Passivation Treatment, and the leading portion of tapping bar is set
It is equipped with the helicla flute for tapping.
Above-mentioned patent utilizes the spiral shell of tapping bar side in use, tapping bar is inserted into hole to be processed, squeezed and rotated
Line squeezes the inner wall in hole to be processed, makes to form screw thread in hole to be processed.In tapping process, tapping bar squeeze out waste residue residual with
Tapping bar moves in the screw thread in hole to be processed, since waste residue has certain hardness, so that the screw thread in hole to be processed is scratched,
The quality of thread forming is influenced, therefore there are shortcomings to be modified for the prior art.
Utility model content
There are problems that waste residue influences thread forming the prior art, the purpose of the utility model is to provide self tapping spiral shells
Nail has the advantages that improve thread forming quality.
To achieve the above object, the utility model provides following technical solution:
Tapping screw, including the head of a nail, the head of a nail side are provided with screw rod, and the screw rod is set far from one end of the head of a nail
It being equipped with and attacks block, the radius for attacking block gradually becomes smaller along the direction far from the head of a nail, and the block side of attacking is provided with tapping,
Slot scraping is offered on the tapping.
It is inserted into hole to be processed through the above technical solutions, will first attack block, squeezes and rotate the head of a nail, tapping squeezes to be added
Work hole inner wall squeezes out extra waste residue, meanwhile, slot scraping rotates in hole inner thread to be processed, and discharge remains in screw thread
The quality of thread forming is effectively turned up in waste residue.
Further, the head of a nail is coaxially fixed with convex block far from the side of the screw rod, and the convex block is far from the spiral shell
The side of bar coaxially offers spider fin.
Through the above technical solutions, mating tool is inserted into spider fin, convenient for the rotation head of a nail, in hole to be processed
Interior tap out.
Further, the opening of the spider fin offers chamfering.
Through the above technical solutions, after opening up chamfering, it will be in mating tool insertion spider fin convenient for operator.
Further, the star trench bottom offers groove.
Through the above technical solutions, after opening up groove, with spider fin mating tool can be at certain angle of inclination by
Rotate the head of a nail.
Further, described to attack block and coaxially offer location hole, the positioning hole grafting far from one end of the head of a nail
It is provided with pilot pin, the pilot pin is fixed with far from one end of the screw rod and is pre-placed in the locating plate in hole to be processed.
Through the above technical solutions, fixing a pilot pin before tapping in hole to be processed, location hole and positioning are recycled
It is mating between needle, avoid screw rod in tapping process from tilting.
Further, the location hole inner wall is set as rubbing surface.
Through the above technical solutions, rubbing surface is used to increase the frictional force of location hole inner wall, screw bolt loosening is avoided.
Further, the junction of the screw rod and the head of a nail is circumferentially provided with reinforcing ring.
Through the above technical solutions, reinforcing ring is used to enhance the bonding strength between screw rod and the head of a nail, screw rod and nail are improved
The torsion that cap junction can bear.
Further, the side of the head of a nail towards the screw rod radially offers frictional groove.
Through the above technical solutions, frictional groove is used to increase the frictional force on head of a nail surface, carried out using the utility model
When connection, the loosening of screw rod is effectively avoided.
Compared with prior art, the utility model has the beneficial effects that
(1) it is rotated in hole inner thread to be processed by slot scraping, the residue remained in screw thread is fallen into slot scraping, is followed
Slot scraping discharge, avoids remaining residue in hole inner thread to be processed, and the quality of thread forming is effectively turned up；
(2) by opening up location hole, it is ensured that axis direction of the screw rod along hole to be processed screws in, and effectively avoids the screw thread of tapping
Inclination；
(3) by opening up frictional groove, increase the frictional force between the head of a nail and object, the utility model connection is effectively avoided to make
With rear loosening.
Detailed description of the invention
Fig. 1 is the overall structure diagram one of the utility model；
Fig. 2 is the overall structure diagram two of the utility model；
Fig. 3 is cross-sectional view when the utility model is used；
Fig. 4 is the portion A partial enlarged view in Fig. 3.
Appended drawing reference: the 1, head of a nail；2, screw rod；3, block is attacked；4, tapping；5, slot scraping；6, convex block；7, spider fin；8, chamfering；
9, groove；10, location hole；11, rubbing surface；12, reinforcing ring；13, frictional groove；14, pilot pin；15, locating plate.
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 depicted in figs. 1 and 2, tapping screw, including surface are the circular head of a nail 1, and 1 side of the head of a nail is integrally fixed with screw rod
2, the junction of screw rod 2 and the head of a nail 1 is circumferentially fixed reinforcing ring 12, and reinforcing ring 12 is formed by way of spot welding, for improving
Bonding strength between screw rod 2 and the head of a nail 1.The head of a nail 1 radially offers frictional groove 13 towards the side of screw rod 2, this is practical
After novel use, the side of the head of a nail 1 towards screw rod 2 is abutted with body surface, increases the frictional force between the head of a nail 1 and object, is prevented
Only the utility model loosens, and influences bonding strength.
The one end of screw rod 2 far from the head of a nail 1, which is integrally fixed with, attacks block 3, attacks that block 3 is in a circular table shape, attacks the radius of block 3 along far from nail
The direction of cap 1 gradually becomes smaller, and attacks 3 side of block and is provided with tapping 4, tapping 4 is connected with the screw thread of 2 side of screw rod.It uses
When, block 3 will be attacked and be pressed into the hole to tapping, compress and rotate the head of a nail 1, tapping 4 is made to compress the inner wall in hole to be processed, make to be added
Work hole inner wall forms screw thread.Slot scraping 5 is offered on tapping 4,5 section of slot scraping is triangular in shape, in use, slot scraping 5 is for scraping
Waste residue in hole inner thread to be processed avoids the waste residue squeezed out that tapping 4 is followed to move in hole inner thread to be processed, by
There is certain hardness in waste residue, to scratch the screw thread of hole inner wall to be processed.
As shown in figures 1 and 3, side of the head of a nail 1 far from screw rod 2 is coaxially fixed with convex block 6, side of the convex block 6 far from screw rod 2
Face coaxially offers spider fin 7, and 7 cross section of spider fin is regular hexagon, by the tool for being inserted into clamping engagement in spider fin 7
The rotation of block 3 is attacked in drive.The opening of spider fin 7 offers chamfering 8, and chamfering 8 is convenient for being inserted into the work of clamping engagement into spider fin 7
Tool.7 bottom of spider fin opens up fluted 9, by opening up groove 9, in use, tool can the certain angle of deflection turned,
Tool easy to use, which turns, attacks block 3.
As shown in Figure 3 and Figure 4, it attacks the one end of block 3 far from the head of a nail 1 and coaxially offers location hole 10, location hole 10 is tapered,
Grafting is provided with pilot pin 14 in location hole 10, and pilot pin 14 is fixed with locating plate 15 far from one end of screw rod 2, and locating plate 15 is
Cylindric, pilot pin 14 is located at the center point of locating plate 15, and coaxial placement is in hole to be processed, for preventing pilot pin 14 from inclining
Tiltedly.In use, hole bottom to be processed is provided with pilot pin 14, it is inserted into pilot pin 14 in location hole 10, prevents from turning and attack block 3
In the process, screw rod 2 tilts, and hole inner wall to be processed forms inclined screw thread, and 10 inner wall of location hole is set as rubbing surface 11, for increasing
Add the friction between pilot pin 14 and location hole 10, prevents screw rod 2 from loosening.
The working principle and beneficial effect of the utility model is as follows:
When utility model works, it will first attack block 3 and be inserted into hole to be processed, then insert a tool into spider fin 7, squeeze simultaneously
The head of a nail 1 is rotated, tapping 4 squeezes hole inner wall to be processed, squeezes out extra waste residue, waste residue flows into slot scraping 5, and follows slot scraping 5
Discharge is rotated up in hole inner thread to be processed.
When the utility model is used, slot scraping 5 rotates in hole inner thread to be processed, scrapes the residue in screw thread, avoids
Thread forming quality is turned up in remaining residue in hole inner thread to be processed, meanwhile, improve the bonding strength of the utility model；It rubs
Wipe the frictional force that slot 13 increases between the head of a nail 1 and object effectively avoids screw rod 2 from loosening after using the utility model connection；It is logical
It crosses and opens up location hole 10, it is ensured that axis direction of the screw rod 2 along hole to be processed screws in, and the screw thread of tapping is effectively avoided to tilt.
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 (8)
1. tapping screw, including the head of a nail (1), which is characterized in that the head of a nail (1) side is provided with screw rod (2), the screw rod
(2) one end far from the head of a nail (1), which is provided with, attacks block (3), and the radius for attacking block (3) is along the side far from the head of a nail (1)
To gradually becoming smaller, described block (3) side of attacking is provided with tapping (4), offers slot scraping (5) on the tapping (4).
2. tapping screw according to claim 1, which is characterized in that side of the head of a nail (1) far from the screw rod (2)
It is coaxially fixed with convex block (6), the convex block (6) coaxially offers spider fin (7) far from the side of the screw rod (2).
3. tapping screw according to claim 2, which is characterized in that the opening of the spider fin (7) offers chamfering
(8).
4. tapping screw according to claim 2, which is characterized in that spider fin (7) bottom opens up fluted (9).
5. tapping screw according to claim 1, which is characterized in that described to attack the one end of block (3) far from the head of a nail (1)
It coaxially offers location hole (10), the interior grafting of the location hole (10) is provided with pilot pin (14), and the pilot pin (14) is separate
One end of the screw rod (2), which is fixed with, to be pre-placed in the locating plate (15) in hole to be processed.
6. tapping screw according to claim 5, which is characterized in that location hole (10) inner wall is set as rubbing surface
(11).
7. tapping screw according to claim 1, which is characterized in that the junction of the screw rod (2) and the head of a nail (1)
Circumferentially it is provided with reinforcing ring (12).
8. tapping screw according to claim 1, which is characterized in that side of the head of a nail (1) towards the screw rod (2)
Radially offer frictional groove (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820983857.3U CN208858722U (en) | 2018-06-23 | 2018-06-23 | Tapping screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820983857.3U CN208858722U (en) | 2018-06-23 | 2018-06-23 | Tapping screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208858722U true CN208858722U (en) | 2019-05-14 |
Family
ID=66411971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820983857.3U Expired - Fee Related CN208858722U (en) | 2018-06-23 | 2018-06-23 | Tapping screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208858722U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114483747A (en) * | 2022-01-19 | 2022-05-13 | 慈溪市振成机械有限公司 | Anti-loose screw with special structure and machining process thereof |
-
2018
- 2018-06-23 CN CN201820983857.3U patent/CN208858722U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114483747A (en) * | 2022-01-19 | 2022-05-13 | 慈溪市振成机械有限公司 | Anti-loose screw with special structure and machining process thereof |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190514 Termination date: 20210623 |