CN114001081A - Anti-seizing stainless steel bolt and manufacturing method thereof - Google Patents
Anti-seizing stainless steel bolt and manufacturing method thereof Download PDFInfo
- Publication number
- CN114001081A CN114001081A CN202111323917.1A CN202111323917A CN114001081A CN 114001081 A CN114001081 A CN 114001081A CN 202111323917 A CN202111323917 A CN 202111323917A CN 114001081 A CN114001081 A CN 114001081A
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- bolt
- thread
- bolt body
- stainless steel
- milling cutter
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
- F16B35/041—Specially-shaped shafts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/16—Rigid blades, e.g. scrapers; Flexible blades, e.g. wipers
- B08B1/165—Scrapers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
Abstract
The present invention relates to a stainless steel bolt structure for preventing seizure and a method for manufacturing the structure. The utility model provides a prevent type of dying of biting stainless steel bolt, includes the bolt body, is provided with the external screw thread on the bolt body, and the external screw thread includes first flank of thread and second flank of thread, is provided with the slotted hole on first flank of thread and/or the second flank of thread. The outer thread of the invention is provided with the slotted hole, on one hand, the opening of the slotted hole can scrape off the scraps on the nut body, and meanwhile, the scraps can be collected into the slotted hole.
Description
Technical Field
The present invention relates to a stainless steel bolt structure for preventing seizure and a method for manufacturing the structure.
Background
The stainless steel material is essentially different from the carbon steel material. Because the stainless steel material has good extensibility, when the bolt and the nut which are made of the stainless steel material are assembled for use, the situation that the bolt and the nut cannot be unscrewed, namely the situation that the bolt and the nut are seized, is easy to occur. In engineering use, in order to improve seizure, the method mainly comprises the following steps of firstly, selecting a high-quality stainless steel material to ensure enough strength and corrosion resistance and reduce seizure; secondly, selecting products with mechanical properties of the machine to meet the tensile strength and the safety load of the products; thirdly, the friction between the internal thread and the external thread is reduced; and fourthly, operating strictly according to assembly specifications.
Currently, technicians improve the first, second and fourth aspects more frequently, and the third aspect is improved less frequently. It is common practice to clean the internal and external threads prior to assembly to remove particulate debris, coat lubricating oil, and the like. In the prior art, the invention name is as follows: a stainless steel threaded connection that prevents dying of stinging, publication no: CN111271360A, through independently scribble fluid and scrape off the collection to the abrasive dust between the screw thread to threaded connection department in rotatory process, avoided stainless steel screw tooth surface to take place serious adhesion wearing and tearing to and the abrasive dust that long-term wearing and tearing produced piles up between the screw tooth, hinder the process of closing soon of screw tooth and finally arouse the phenomenon of dying. But the technical scheme has complex structure and inconvenient production and installation.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a structure which can coat lubricating oil at a threaded connection part through self rotation and collect chips accumulated among screw threads, can effectively avoid seizure, and is simple in structure and convenient to produce.
The technical scheme provided by the invention is as follows:
the utility model provides a prevent type of dying of biting stainless steel bolt, includes the bolt body, is provided with the external screw thread on the bolt body, and the external screw thread includes first flank of thread and second flank of thread, is provided with the slotted hole on first flank of thread and/or the second flank of thread.
Specifically, the opening of the slotted hole extends from the crest of the thread of the external thread to the root of the thread of the external thread.
Preferably, be provided with the bolt scraper on the outer disc of the shank of bolt and be in the initiating terminal of external screw thread, the screw direction setting of external screw thread is followed to the bolt scraper, and the both sides terminal surface of bolt scraper is first scraper face and second respectively and scrapes the knife face, and first scraper face is by the tail end slope setting of shank of bolt head end orientation shank of bolt, and the second is scraped the knife face and is set up by the tail end slope of shank of bolt head end orientation shank of bolt, and first scraper face and second scrape the tail end that the knife face all faces the shank of bolt.
Preferably, an included angle formed by a straight line m formed by the points a and b and a straight line n passing through the point a and being parallel to the axis of the bolt body is an acute angle.
Preferably, the included angle formed by the intersection point b ' of the second scraping surface and the crest, the midpoint a ' of the intersection line of the second scraping surface and the circular ring surface formed by the root on the bolt body, a straight line m ' formed by the points a ' and b ' and a straight line n ' passing through a ' and being parallel to the axis of the bolt body is an acute angle.
Preferably, the external thread is multistage, be the breach between the adjacent external thread in the screw direction, with be provided with the oil tank on the nut body of bolt body matched with, be provided with the internal thread with external thread matched with on the nut body, seted up the oil through hole on the internal thread flank, the top intercommunication of oil through hole sets up the motion groove, the ball sets up in the junction of oil through hole and motion groove, oil through hole and oil tank lower part intercommunication under the junction one side direction setting of oil through hole and motion groove.
Preferably, the nut body is provided with a blocking block, and the blocking block is positioned at the top of the oil tank.
Preferably, the motion groove is communicated with the oil tank through a ventilation hole, and the joint of the ventilation hole and the oil tank is positioned above the oil level in the oil tank.
The invention also provides a manufacturing method of the anti-seize stainless steel bolt, which comprises the following steps,
SA1, fixing the bolt body with external thread;
SA2, drilling the first thread face and/or the second thread face by a drilling tool to form a slotted hole.
The invention also provides a manufacturing method of the anti-seize stainless steel bolt, which comprises the following steps,
SB1, fixing the bolt body with the external thread turned on the clamp;
SB2, the milling cutter is positioned at the starting end of the external thread, the end part of the milling cutter faces the axial lead of the bolt body, the milling cutter is started, and the milling cutter rotates;
SB3, operating the clamp to enable the bolt body to rotate around the axis of the bolt body and move from the head end of the bolt body to the tail end direction of the bolt body, and cutting the external thread by the milling cutter to form a first scraping surface;
SB4, the milling cutter is positioned at the bottom of the external thread, the end part of the milling cutter faces the axial lead of the bolt body, the milling cutter is started, and the milling cutter rotates;
SB5, operating the clamp to make the bolt body rotate around the axis of the bolt body and move from the tail end of the bolt body to the head end of the bolt body, and the milling cutter cuts the external thread to form a second scraping surface. The external thread between the first scraper face and the second scraper face is a bolt scraper.
The outer thread of the invention is provided with the slotted hole, on one hand, the opening of the slotted hole can scrape off the scraps on the nut body, and meanwhile, the scraps can be collected in the slotted hole. According to the invention, the bolt scraper is arranged at the starting end of the external thread, so that scraps among the threads can be scraped, and meanwhile, the scraps can slide onto the tooth bottom surface along the first scraper surface and the second scraper surface, and the scraps can be effectively prevented from being accumulated among the threads. According to the invention, the bolt body rotates relative to the nut body, and the intermittent gap passes through the oil through hole, so that the air pressure at the oil through hole is continuously changed, the ball moves in the motion groove, the oil feeding hole is intermittently communicated with the oil through hole, and lubricating oil is intermittently coated on the external thread and the internal thread.
Drawings
FIG. 1 is a front view of a bolt body and a nut body;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is an enlarged view of FIG. 1 at B;
FIG. 4 is an enlarged view of FIG. 1 at B;
FIG. 5 is a schematic view of the structure of the bolt body and the nut body;
FIG. 6 is a schematic view of the structure of the bolt body and the nut body;
FIG. 7 is an enlarged view at C of FIG. 6;
FIG. 8 is an enlarged view at C of FIG. 6;
FIG. 9 is a schematic view of the structure of the bolt body;
FIG. 10 is an enlarged view of FIG. 9 at D;
fig. 11 is a schematic view showing a positional relationship between the milling cutter and the bolt body when the milling cutter of example 3 processes the bolt scraper.
In the figure:
1. a bolt body; 2. a nut body; 3. an external thread; 4. an internal thread; 5, notching; 6. an oil through hole; 7. a ball; 8, a moving groove; 9. a ventilation hole; 10. a lower oil hole; 11. a plugging block; 12. a first scraper surface; 13. a first scraping edge; 14 a second scraping edge; 15. a second scraper surface; 16. a third scraping edge; 17. a fourth scraping edge; 18. a first slot; 19. a second slot; 20. an oil tank; 21. a bolt scraper; 22. provided is a milling cutter.
In fig. 4, a is the midpoint of the intersection line of the first scraping surface and the cylindrical surface formed by the tooth bottom;
b in FIG. 4 is the intersection of the first rake face and the crest;
m is a connecting line of a and b; n is a straight line which passes through the point a and is parallel to the axis of the bolt body;
in fig. 8, a' is the midpoint of the intersection line of the first rake face and the cylindrical surface formed by the root;
b' in FIG. 8 is the intersection of the first rake face and the crest;
m ' is a connecting line of a ' and b '; n 'is a line parallel to the axis of the bolt body passing through point a'.
Detailed Description
Example 1
The utility model provides a prevent type of dying of biting stainless steel bolt, includes the bolt body 1, is provided with external screw thread 3 on the bolt body 1, and external screw thread 3 includes first flank of thread and second flank of thread. The first flanks are each provided with a first slot 18 and the second flanks are each provided with a second slot 19.
The openings of the first and second slots 18, 19 extend from the crest of the thread of the external thread 3 to the root of the thread of the external thread 3. So that the opening edges of the first and second slots 18 and 19 can be used as scrapers while the chips scraped off by the external thread 3 and the internal thread 4 of the nut body 2 fall into the first and second slots 18 and 19.
A manufacturing method of an anti-seize stainless steel bolt comprises the following steps,
SA1, fixing the bolt body 1 with the external thread 3;
SA2, drilling the first and second flanks by a drilling tool to form the first and second slots 18, 19.
Example 2
An anti-seize stainless steel bolt comprises a bolt body 1, wherein an external thread 3 is arranged on the bolt body 1. The external thread 3 comprises a first flank and a second flank.
The outer circle surface of the bolt body 1 is provided with a bolt scraper 21 and is positioned at the starting end of the external thread. The bolt scraper 21 is arranged in the direction of the helix of the external thread 3. The two side end surfaces of the bolt scraper 21 are respectively a first scraper surface 12 and a second scraper surface 15.
The first scraper surface 12 is obliquely arranged from the head end of the bolt body 1 to the tail end of the bolt body 1. The intersection of the first rake surface 12 and the first thread surface forms a first scraping edge 13, and the intersection of the first rake surface 12 and the second thread surface forms a second scraping edge 14.
The second scraping tool face 15 is obliquely arranged from the head end of the bolt body 1 to the tail end of the bolt body 1, and the first scraping tool face 12 and the second scraping tool face 15 are both arranged towards the tail end of the bolt body 1. The intersection of the second rake surface 15 and the first thread surface forms a third rake edge 16, and the intersection of the second rake surface 15 and the second thread surface forms a fourth rake edge 17.
A manufacturing method of an anti-seize stainless steel bolt comprises the following steps,
SB1, fixing the bolt body 1 with the external thread 3 turned out on the clamp;
SB2, the milling cutter is positioned at the starting end of the external thread 3, the end part of the milling cutter 22 faces the axial lead of the bolt body 1, the milling cutter 22 is started to rotate, and the axial lead of the milling cutter 22 is vertical to the axial lead of the bolt body 1;
SB3, operating the clamp to make the bolt body 1 rotate around the axis of the bolt body 1 and move from the head end of the bolt body 1 to the tail end of the bolt body 1, and the milling cutter 22 cuts the external thread 3 to form a first scraping surface 12;
SB4 and the milling cutter 22 are positioned at the bottom of the external thread 3, the end part of the milling cutter 22 faces the axial lead of the bolt body 1, the milling cutter 22 is started, and the milling cutter 22 rotates;
SB5, the bolt body 1 is rotated about the axis of the bolt body 1 by operating the jig, and the milling cutter 22 cuts the external thread 3 to form the second rake face 15 by moving the bolt body 1 from the tail end of the bolt body 1 to the head end of the bolt body 1.
The thread between the first blade surface 12 and the second blade surface 15 constitutes a bolt blade 21. The first scraping surface 12 and the second scraping surface 15 are obliquely arranged, so that the length of a contact line between the bolt scraping blade 21 and the internal thread 4 on the nut body 2 can be increased, and meanwhile, the scraps can be remained on the first scraping surface 12 and the second scraping surface 15.
Example 3
This example is an improvement over example 2, the improvement being:
the included angle formed by a straight line m formed by the points a and b and a straight line n which passes through the point a and is parallel to the axis of the bolt body 1 is an acute angle.
The included angle formed by the straight line m 'formed by the intersection point b' of the second scraping surface 15 and the crest, the midpoint a 'of the intersection line a' of the second scraping surface 15 and the circular ring surface formed by the root of the thread on the bolt body 1 and the straight line n 'passing through a' and being parallel to the axis of the bolt body 1 is an acute angle.
Through the above-mentioned structure setting, can realize that first scraping knife face 12 and second scrape knife face 15 not only by the tail end of the body of bolt 1 to the head end direction slope of the body of bolt 1, and first scraping knife face 12 and second scrape knife face 15 by the excircle of the body of bolt 1 to the axle center direction slope of the body of bolt 1, make the piece that stops on first scraping knife face 12 and second scrape knife face 15 along first scraping knife face 12 and second scrape knife face 15 by the tail end of the body of bolt 1 to the head end of the body of bolt 1, by the excircle of the body of bolt 1 to the axle center direction landing of the body of bolt 1, final piece can constitute the cylindrical surface landing along the tooth bottom of the body of bolt 1 and break away from the surface of internal thread 4 and external screw thread 3.
During machining, as shown in fig. 11, the milling cutter 22 is positioned at the root of the external thread 3, the end of the milling cutter 22 is set toward the axial line of the bolt body 1 and the end of the milling cutter 22 is set from the tail end of the bolt body 1 toward the head end of the bolt body 1, and the milling cutter 22 is rotated by operating the milling cutter.
Using step SB3 in example 2: operating the clamp to enable the bolt body 1 to rotate around the axis of the bolt body 1 and move from the head end of the bolt body 1 to the tail end direction of the bolt body 1, and cutting the external thread 3 by the milling cutter 22 to form a first scraping surface 12;
using step SB4 in example 2: the milling cutter 22 is positioned at the bottom of the external thread 3, the end part of the milling cutter 22 faces the axial lead of the bolt body 1, the milling cutter 22 is started, and the milling cutter 22 rotates;
using step SB5 in example 2: the bolt body 1 is rotated around the axis of the bolt body 1 by operating the jig, and the milling cutter 22 cuts the external thread 3 to form a second rake face 15 by moving the bolt body 1 from the tail end of the bolt body 1 to the head end of the bolt body 1.
Example 4
An anti-seize stainless steel bolt comprises a bolt body 1, wherein an external thread 3 is arranged on the bolt body 1.
The external screw thread 3 is the multistage, is breach 5 between the adjacent external screw thread 3 on the spiral direction.
The nut body 2 matched with the bolt body 1 is provided with an oil tank 20. The nut body 2 is provided with an internal thread 4 matched with the external thread 3. The thread surface of the internal thread 4 is provided with an oil through hole 6. The upper part of the oil through hole 6 is communicated with a moving groove 8. The ball 7 is arranged at the joint of the oil through hole 6 and the moving groove 8. The diameter of the moving groove 8 is larger than that of the oil through hole 6. The ball 7 can move in the moving groove 8, and can block the oil through hole 6 when being positioned at the joint of the oil through hole 6 and the moving groove 8. The lower oil hole 10 is arranged at one side of the joint of the oil through hole 6 and the moving groove 8 and is communicated with the lower part of the oil tank 20.
The moving groove 8 is communicated with the oil tank 20 through a ventilation hole 9, and the joint of the ventilation hole 9 and the oil tank 20 is positioned above the oil surface in the oil tank 20. The nut body 2 is provided with a blocking block 11, and the blocking block 11 is positioned at the top of the oil tank 20.
When in use, the electric tool can be used for operation. When the bolt body 1 is screwed into the nut body 2, the gaps 5 are formed among the multiple sections of external threads 3, so that air pressure at the oil through holes 6 is changed, the ball 7 is further pushed to move in the moving groove 8, the oil through holes 10 and the oil through holes 6 are intermittently communicated, and lubricating oil in the oil tank 20 is intermittently coated on the external threads 3 and the internal threads 4.
Claims (10)
1. The utility model provides a prevent type of dying of stinging stainless steel bolt, includes bolt body (1), is provided with external screw thread (3) on bolt body (1), and external screw thread (3) are provided with the slotted hole including first flank of thread and second flank of thread, its characterized in that on first flank of thread and/or the second flank of thread.
2. Anti-seize stainless steel bolt according to claim 1, characterized in that the opening of the slot extends from the crest of the thread of the external thread (3) to the root of the thread of the external thread (3).
3. The anti-seize stainless steel bolt according to claim 1, wherein the bolt scraper (21) is arranged on the outer circumferential surface of the bolt body (1) and located at the starting end of the external thread, the bolt scraper (21) is arranged along the spiral direction of the external thread (3), the end surfaces of the two sides of the bolt scraper (21) are respectively a first scraper surface (12) and a second scraper surface (15), the first scraper surface (12) is arranged from the head end of the bolt body (1) towards the tail end of the bolt body (1) in an inclined manner, the second scraper surface (15) is arranged from the head end of the bolt body (1) towards the tail end of the bolt body (1) in an inclined manner, and the first scraper surface (12) and the second scraper surface (15) are both arranged towards the tail end of the bolt body (1).
4. The anti-seize stainless steel bolt according to claim 3, wherein the intersection point b of the first scraping surface (12) and the crest, the midpoint a of the intersection line of the first scraping surface (12) and the circular ring surface formed by the root of the thread on the bolt body (1), the straight line m formed by the points a and b and the straight line n passing through a and being parallel to the axis of the bolt body (1) form an acute angle.
5. The anti-seize stainless steel bolt according to claim 3, wherein the intersection point b ' of the second scraping surface (15) and the crest, the midpoint a ' of the intersection line of the second scraping surface (15) and the circular ring surface formed by the root of the thread on the bolt body (1), the straight line m ' formed by the points a ' and b ' and the straight line n ' passing through a ' and being parallel to the axis of the bolt body (1) form an acute angle.
6. The anti-seize stainless steel bolt according to claim 1, wherein the external thread (3) is multi-segmented, a gap (5) is formed between adjacent external threads (3) in the spiral direction, an oil tank (20) is arranged on the nut body (2) matched with the bolt body (1), an internal thread (4) matched with the external thread (3) is arranged on the nut body (2), an oil through hole (6) is formed in the thread surface of the internal thread (4), a moving groove (8) is communicated above the oil through hole (6), a ball (7) is arranged at the joint of the oil through hole (6) and the moving groove (8), and a lower oil hole (10) is arranged in one side direction of the joint of the oil through hole (6) and the moving groove (8) and communicated with the lower portion of the oil tank (20).
7. An anti-seize stainless steel bolt according to claim 6, wherein the nut body (2) is provided with a stopper block (11), the stopper block (11) being located at the top of the oil tank (20).
8. A stainless steel bolt of the anti-seizing type according to claim 6, wherein the moving groove (8) is communicated with the oil tank (20) through the ventilating hole (9), and the joint of the ventilating hole (9) and the oil tank (20) is located above the oil level in the oil tank (20).
9. A method for manufacturing a seizure preventive stainless steel bolt, comprising the steps of preparing the seizure preventive stainless steel bolt according to claim 1,
SA1, fixing a bolt body (1) with an external thread (3);
SA2, drilling the first thread face and/or the second thread face by a drilling tool to form a slotted hole.
10. A method for manufacturing a seizure preventive stainless steel bolt, comprising the steps of preparing the seizure preventive stainless steel bolt according to claim 3,
SB1, fixing the bolt body (1) with the external thread (3) turned out on the clamp;
SB2 and the milling cutter (22) are positioned at the starting end of the external thread (3), the end part of the milling cutter (22) faces to the axial lead of the bolt body (1), the milling cutter is started, and the milling cutter (22) rotates;
SB3, operating the clamp to enable the bolt body (1) to rotate around the axis of the bolt body (1) and move from the head end of the bolt body (1) to the tail end direction of the bolt body (1), and cutting the external thread (3) by the milling cutter (22) to form a first scraping surface (12);
SB4 and the milling cutter (22) are positioned at the bottom of the external thread (3), the end part of the milling cutter (22) faces to the axial lead of the bolt body (1), the milling cutter is started, and the milling cutter (22) rotates;
SB5, operating the clamp to make the bolt body (1) rotate around the axis of the bolt body (1) and move from the tail end of the bolt body (1) to the head end direction of the bolt body (1), the milling cutter (22) cuts the external thread (3) to form a second scraping surface (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111323917.1A CN114001081A (en) | 2021-11-10 | 2021-11-10 | Anti-seizing stainless steel bolt and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111323917.1A CN114001081A (en) | 2021-11-10 | 2021-11-10 | Anti-seizing stainless steel bolt and manufacturing method thereof |
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| CN114001081A true CN114001081A (en) | 2022-02-01 |
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| CN202111323917.1A Pending CN114001081A (en) | 2021-11-10 | 2021-11-10 | Anti-seizing stainless steel bolt and manufacturing method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204610493U (en) * | 2015-03-11 | 2015-09-02 | 邯郸市正信标准件有限公司 | Twoly cut tail tapping screw |
| EP2980424A1 (en) * | 2014-07-31 | 2016-02-03 | King Point Enterprise Co., Ltd | Fastening bolt for use in concrete |
| CN205876919U (en) * | 2016-07-21 | 2017-01-11 | 赵齐兵 | Sewing needle crab bolt |
| CN208311220U (en) * | 2018-03-06 | 2019-01-01 | 江苏固德建筑机械有限公司 | A kind of coiled hair cross Self Drilling Screws improving degree of being completely embedded |
| CN209083744U (en) * | 2018-10-27 | 2019-07-09 | 嘉兴合邦机械科技有限公司 | A kind of cement self tapping anchor bolt of improvement |
| CN113027890A (en) * | 2019-12-09 | 2021-06-25 | 精法精密工业股份有限公司 | Pointed tail screw with cutting groove |
-
2021
- 2021-11-10 CN CN202111323917.1A patent/CN114001081A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2980424A1 (en) * | 2014-07-31 | 2016-02-03 | King Point Enterprise Co., Ltd | Fastening bolt for use in concrete |
| CN204610493U (en) * | 2015-03-11 | 2015-09-02 | 邯郸市正信标准件有限公司 | Twoly cut tail tapping screw |
| CN205876919U (en) * | 2016-07-21 | 2017-01-11 | 赵齐兵 | Sewing needle crab bolt |
| CN208311220U (en) * | 2018-03-06 | 2019-01-01 | 江苏固德建筑机械有限公司 | A kind of coiled hair cross Self Drilling Screws improving degree of being completely embedded |
| CN209083744U (en) * | 2018-10-27 | 2019-07-09 | 嘉兴合邦机械科技有限公司 | A kind of cement self tapping anchor bolt of improvement |
| CN113027890A (en) * | 2019-12-09 | 2021-06-25 | 精法精密工业股份有限公司 | Pointed tail screw with cutting groove |
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