CN109989978A - Composite bolt and its manufacturing method - Google Patents
Composite bolt and its manufacturing method Download PDFInfo
- Publication number
- CN109989978A CN109989978A CN201810000957.4A CN201810000957A CN109989978A CN 109989978 A CN109989978 A CN 109989978A CN 201810000957 A CN201810000957 A CN 201810000957A CN 109989978 A CN109989978 A CN 109989978A
- Authority
- CN
- China
- Prior art keywords
- kerve
- bolt
- circumferential surface
- rigid body
- solder
- 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.)
- Pending
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 41
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 229910000679 solder Inorganic materials 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims description 22
- 238000003466 welding Methods 0.000 claims description 6
- 238000003801 milling Methods 0.000 claims description 4
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical group [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 3
- 239000000155 melt Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 2
- 238000003763 carbonization Methods 0.000 claims 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims 1
- 229910052721 tungsten Inorganic materials 0.000 claims 1
- 239000010937 tungsten Substances 0.000 claims 1
- 238000010079 rubber tapping Methods 0.000 abstract description 13
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
- F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
- F16B25/0084—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by geometric details of the tip
-
- 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
- F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
- F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
- F16B25/0094—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw the screw being assembled or manufactured from several components, e.g. a tip out of a first material welded to shaft of a second material
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Dowels (AREA)
Abstract
A kind of composite bolt, comprising bolt body, at least one be formed in bolt body kerve and at least one be filled in the recombiner unit of at least one kerve.The circumferential surface that bolt body includes the rounded bottom surface for defining a center of circle, is upwardly extended by rounded bottom surface periphery, and it is formed in the main thread of circumferential surface.At least one kerve is to extend to circumferential surface by rounded bottom surface.At least one recombiner unit includes the solder for being filled at least one kerve and being fixed in bolt body, and the rigid body positioned at least one kerve and with solder Joint.Rigid body and solder compatible fill up at least one kerve with closing, and rigid body has the outer surface being revealed in outside at least one kerve, and the deputy thread for forming the outer surface and being mutually connected with the main thread.Whereby, the effective tapping of material characteristic of rigid body can be passed through, and intensity, lower-cost material just can be selected in bolt body, and then achievees the purpose that save cost.The present invention also provides the manufacturing methods of composite bolt.
Description
Technical field
The present invention relates to a kind of bolt and its manufacturing methods, more particularly to a kind of composite bolt and its manufacturing method.
Background technique
Refering to fig. 1, an existing bolt 1 includes a screw head 11 and a screw rod extended downwardly by the screw head 11
12, wherein the screw rod 12 is divided into a tapping end 121 and a fixing end 122 according to the distance with the screw head 11.The bolt 1
It in order to bear power when tapping, therefore is made with the high strength steel integrated molding of higher cost.However in tapping
During, only the tapping end 121, which has, participates in tapping movement and must use high-intensitive steel, and other parts are simultaneously not required to
It to use to so high-intensitive steel, therefore the existing bolt 1 the problem of there are cost is excessively high and waste of material.
Summary of the invention
Effectively tapping it can be not required to the whole compound spiral shell for using high-strength material again the purpose of the present invention is to provide a kind of
Bolt and its manufacturing method.
Composite bolt of the present invention, comprising bolt body, at least one be formed in the kerve of the bolt body, and at least one
A recombiner unit for being filled at least one kerve.
The bolt body includes the rounded bottom surface for defining a center of circle, is upwardly extended by the rounded bottom surface periphery
Circumferential surface, and it is formed in the main thread of the circumferential surface.Wherein, which is to extend to the week by the rounded bottom surface
Face.
At least one recombiner unit includes being filled at least one kerve, and be fixed in the weldering of the bolt body
Material, and the rigid body positioned at least one kerve and with the solder Joint.The rigid body and the solder compatible close
Ground fills up at least one kerve, and the rigid body has the outer surface being revealed in outside at least one kerve, and forms institute
The deputy thread stating outer surface and being mutually connected with the main thread.
The object of the invention to solve the technical problems also can be used following technical measures and further realize.
Preferably, aforementioned composite bolt, comprising several kerves for being formed in the rounded bottom surface at intervals and it is several with
The comparable recombiner unit of kerve quantity, wherein every two adjacent kerve presss from both sides angularly with the center of circle each other.
Preferably, aforementioned composite bolt, wherein at least one kerve tool there are two from the circumferential surface toward the center of circle and
Each other towards oppositely extending limiting section.
Preferably, aforementioned composite bolt, wherein the material of at least one rigid body is tungsten carbide.
Preferably, aforementioned composite bolt, wherein at least one kerve is to be prolonged by the center of circle along several through directions
The circumferential surface is extended to, wherein every two adjacent through directions are pressed from both sides angularly each other.
Preferably, aforementioned composite bolt, wherein the quantity of the through direction is three or more.
The manufacturing method of composite bolt of the present invention, comprises the steps of
Step (a) prepares bolt body, and the bolt body includes the rounded bottom surface for defining a center of circle, by described
The circumferential surface that rounded bottom surface periphery upwardly extends, and it is formed in the main thread of the circumferential surface.
Step (b) processes at least one in the bolt body and is extended to by the rounded bottom surface using process equipment
The kerve of the circumferential surface.
Step (c) prepares at least one recombiner unit, at least one recombiner unit include for be filled in this at least one
The solder of a kerve, and the rigid body for being filled at least one kerve, the rigid body have be revealed in this at least one
Outer surface outside a kerve, and the deputy thread for forming the outer surface and being mutually connected with the main thread.
The rigid body by the fill solder after at least one kerve, then is moved into this at least one by step (d)
Kerve.
Step (e) is powered to the solder using welding equipment, melts the solder, makes the solder affixed whereby
In the bolt body and the rigid body.
Preferably, the manufacturing method of aforementioned composite bolt, wherein in the step (e), when the utilization welding equipment
After being powered, milling apparatus is recycled to carry out deburring to the main thread and the deputy thread.
Preferably, the manufacturing method of aforementioned composite bolt, wherein the material of the rigid body is tungsten carbide.
Preferably, the manufacturing method of aforementioned composite bolt, wherein at least one kerve tool there are two from the circumferential surface toward
The center of circle and each other towards oppositely extending limiting section.
Preferably, the manufacturing method of aforementioned composite bolt, wherein at least one kerve is by the center of circle along several
Through direction extends to the circumferential surface, wherein every two adjacent through direction is pressed from both sides angularly each other.
Preferably, the manufacturing method of aforementioned composite bolt, wherein the quantity of the through direction is three or more.
Preferably, the manufacturing method of aforementioned composite bolt, wherein in the step (b), the process equipment is described
Several kerves for being formed in the rounded bottom surface at intervals are processed on bolt body, wherein every two adjacent kerves each other with
The center of circle presss from both sides angularly；In the step (c), prepare the several and comparable recombiner unit of kerve quantity.
Beneficial effect of the invention is: by material it is harder and suitable for tapping the rigid body utilize the weldering
Expect and is able to be arranged in the bottom of the bolt body, not only can be by the effective tapping of material characteristic of rigid body, and the spiral shell
Intensity, lower-cost material just can be selected in bolt ontology, and then achievees the purpose that save cost.
Detailed description of the invention
Fig. 1 is a side view, illustrates an existing bolt；
Fig. 2 is a flow chart, illustrates first implementation method of the manufacturing method of composite bolt of the present invention；
Fig. 3 is a perspective view, illustrates a bolt body used in first implementation method；
Fig. 4 is a side view, and Fig. 5 is then a bottom view, and explanation is using a process equipment in the bolt whereby
The kerve that ontology is processed；
Fig. 6 is a side view, illustrates that the connection of the recombiner unit and the bolt body in first implementation method is closed
System；
Fig. 7 is a perspective view, illustrates a rigid body of the recombiner unit；
Fig. 8 is a side view, is illustrated using finished product made of first implementation method, while also illustrating that the present invention is compound
One first embodiment of bolt；
Fig. 9 and Figure 10 are all stereogram exploded views, illustrate a second embodiment of composite bolt of the present invention and one respectively
3rd embodiment；
Figure 11 is a bottom view, illustrates a fourth embodiment of composite bolt of the present invention；
Figure 12 is a cross-sectional view, illustrates that the connection of the plural recombiner unit and a bolt body of the fourth embodiment is closed
System；And
Figure 13 to Figure 17 is all bottom view, illustrates the 5th embodiment of composite bolt of the present invention to one the 9th respectively
Embodiment.
Specific embodiment
The following describes the present invention in detail with reference to the accompanying drawings and embodiments.
Referring to Fig.2, first implementation method of the manufacturing method for composite bolt of the present invention, the first implementation method packet
S1 containing step to step S6.
Step S 1, prepares a bolt body 2 as shown in Figure 3, which includes one and define one
21, circumferential surfaces 22 upwardly extended by 21 periphery of rounded bottom surface of rounded bottom surface in the center of circle 211 and one are formed in the circumferential surface
22 main thread 23.
Step S2 (is not painted) using a process equipment in figure, processes a such as Fig. 4 extremely in the bolt body 2
Kerve 3 shown in fig. 5.The kerve 3 must extend to the circumferential surface 22 by the rounded bottom surface 21, and in first implementation method
In, which is to extend to the circumferential surface 22 along two through direction D by the center of circle 211, and the through direction D is pressed from both sides each other
180 degree.
Step S3, prepares a recombiner unit 4 as shown in Figure 6, Figure 7, which includes one for filling
In the solder 41 of the kerve 3 and one for being filled in the rigid body 42 of the kerve 3, which has one to be revealed in this
Outer surface 429 outside kerve 3 and one form the outer surface 429, and the deputy thread 421 being connected with 23 phase of main thread.Its
In, the material of the rigid body 42 is the hard and tungsten carbide suitable for tapping of material.
Step S4, as shown in Fig. 6, Fig. 8, after which is filled in the kerve 3, then the rigid body 42 is moved into should
Kerve 3.
Step S5, continues refering to Fig. 8, is powered using a welding equipment (not being painted in figure) to the solder 41, makes the weldering
Material 41 melts, and is fixed in the solder 41 between the bolt body 2 and the rigid body 42.
Step S6, in order to avoid just not generating a little error because aligning in step S4 or step S5,
Deburring also is carried out to the main thread 23 and the deputy thread 421 using a milling apparatus (not being painted in figure), makes the main thread 23
Perfect it can be connected with the deputy thread 421.
It then, can the rigid body 42 that is material is harder and being suitable for tapping after step S1 to step S6
Using the solder 41 it is able to that the bottom of the bolt body 2 is arranged in, it not only can be effective by the material characteristic of the rigid body 42
Tapping, and intensity, lower-cost material just can be selected in the bolt body 2, and then achievees the purpose that save cost.In addition it to say
Bright, the process equipment, the milling apparatus, the selection of the welding equipment and running are all the prior art of related fields,
Therefore no longer add to repeat here.Continue refering to Fig. 8, a first embodiment of composite bolt of the present invention, for utilization first reality
The real product that applying method produces.But special one is wanted to be mentioned that, which not necessarily has to using such as first implementation method
Manufacture, all structures and the comparable real product of effect with the first embodiment, in the range of all the category present invention covers.
Refering to Fig. 9, Figure 10, the second embodiment and a 3rd embodiment of composite bolt of the present invention, with this first
The structure of embodiment is substantially similar, is different in: the through direction D of the second embodiment and the 3rd embodiment respectively distinguishes
For three and four, and 120 degree and 90 degree are pressed from both sides respectively.It is compared with the first embodiment, the second embodiment and the third are implemented
The kerve 3 of example provides the limit of multiple directions, skid off the rigid body 42 will not by the direction of the circumferential surface 22, and reaches more preferable
Limit effect.
Refering to fig. 11 to Figure 14, wherein Figure 11, Figure 12 are painted a fourth embodiment of composite bolt of the present invention, and Figure 13
And Figure 14 is painted the 5th embodiment and a sixth embodiment respectively.Above-mentioned fourth embodiment to sixth embodiment all with this
The structure of first embodiment is substantially similar, is different in: the fourth embodiment includes two kerves 3 and two recombiner units 4,
And the 5th embodiment includes three kerves 3 and three recombiner units 4, which includes that four kerves 3 and four are multiple
Close unit 4.It exerts a force when wherein, in order to make tapping balanced, therefore every two adjacent kerve 3 presss from both sides isogonism with the center of circle 211 each other
Degree.In addition, the kerve 3 need not be extended to the circumferential surface 22 by the center of circle 211, only the circumferential surface is extended to by the rounded bottom surface 21
22, a kind of embodiment being easier processing is provided whereby.In addition, in the 5th embodiment and the sixth embodiment,
Though not showing the solder 41, the bolt body 2, the connection relationship of the solder 41 and the rigid body 42 and Figure 12
The fourth embodiment is similar, does not chart still further to keep specification succinct.
Refering to fig. 15 to Figure 17, it is painted the 7th embodiment, the 8th embodiment of composite bolt of the present invention respectively
With the 9th embodiment, structure of above-mentioned 7th embodiment to the 9th embodiment all with the fourth embodiment to sixth embodiment
Substantially similar, be different in: there are two each kerve 3 tools from the circumferential surface 22 toward the center of circle 211 and each other towards oppositely extending
Limiting section 31 it is wider at the circumferential surface 22 so that the kerve 3 is narrower at the circumferential surface 22, then it is described just
Property body 42 be arranged in the kerve 3, will be limited and can not be skidded off toward the direction of the circumferential surface 22, reach more preferably limit whereby
Position effect.
As long as composite bolt of the present invention can be produced it should be particularly noted that, first implementation method is slightly improved
The second embodiment to the 9th embodiment.Again referring to Fig.2, being added to be in step S2 at main improvement using being somebody's turn to do
Construction equipment processes the kerve 3 of right quantity or suitable shape, and in step S3, prepares an appropriate number of recombiner unit 4
Or the rigid body 42 of suitable shape.It is further illustrated, or can produce not as shown in Figure 11 to Figure 12 through the circle
The kerve 3 of the heart 211, to be convenient to procedure for processing；Or as shown in figure 9, when processing the kerve 3 from the center of circle 211 toward three
A through direction D extends to the circumferential surface 22, and the rigid body 42 is enable to be limited when being set to the kerve 3 by multiple directions, and can not
It is skidded off toward the direction of the circumferential surface 22；Or as shown in figure 15, which can be fabricated to limiting section as shown in figure 15
31, and the recombiner unit 4 of arrange in pairs or groups shape and cooperating number conjunction, so that the rigid body 42 is more preferably limited in the kerve 3.
Claims (13)
1. a kind of composite bolt；It is characterized by: comprising:
Bolt body, including defining the rounded bottom surface in a center of circle, the circumferential surface upwardly extended by the rounded bottom surface periphery, and
It is formed in the main thread of the circumferential surface；
At least one kerve is formed in the bolt body, and extends to the circumferential surface by the rounded bottom surface；And
At least one recombiner unit is filled at least one kerve, which includes
Solder is filled at least one kerve and is fixed in the bolt body and rigid body, is located at least one kerve
And at least one kerve, and the rigid body are filled up with closing with the solder Joint, the rigid body and the solder compatible
With the outer surface being revealed in outside at least one kerve, and the secondary spiral shell for forming the outer surface and being mutually connected with the main thread
Line.
2. composite bolt according to claim 1, it is characterised in that: be formed in the circular base at intervals comprising several
The kerve in face and several with the comparable recombiner unit of kerve quantity, wherein every two adjacent kerve each other with the circle
The heart presss from both sides angularly.
3. composite bolt according to claim 1, it is characterised in that: there are two by the circumferential surface at least one kerve tool
Toward the center of circle and each other towards oppositely extending limiting section.
4. composite bolt according to claim 1, it is characterised in that: the material of at least one rigid body is tungsten carbide.
5. composite bolt according to claim 1, it is characterised in that: at least one kerve is by the center of circle along number
A through direction extends to the circumferential surface, wherein every two adjacent through directions are pressed from both sides angularly each other.
6. composite bolt according to claim 5, it is characterised in that: the quantity of the through direction is three or more.
7. a kind of manufacturing method of composite bolt；It is characterized by: comprising the steps of:
(a) prepare bolt body, the bolt body includes the rounded bottom surface for defining a center of circle, by the rounded bottom surface week
The circumferential surface that edge upwardly extends, and it is formed in the main thread of the circumferential surface；
(b) process equipment is utilized, at least one is processed in the bolt body and the circumferential surface is extended to by the rounded bottom surface
Kerve；
(c) prepare at least one recombiner unit, which includes for being filled at least one kerve
Solder, and the rigid body for being filled at least one kerve, the rigid body, which has, to be revealed in outside at least one kerve
Outer surface, and the deputy thread for forming the outer surface and being mutually connected with the main thread；
(d) by the fill solder after at least one kerve, then the rigid body moved into at least one kerve；And
(e) it is powered using welding equipment to the solder, melts the solder, the solder is made to be fixed in the bolt whereby
Ontology and the rigid body.
8. the manufacturing method of composite bolt according to claim 7, it is characterised in that: in the step (e), when utilize institute
It states after welding equipment has been powered, milling apparatus is recycled to carry out deburring to the main thread and the deputy thread.
9. the manufacturing method of composite bolt according to claim 7, it is characterised in that: the material of the rigid body is carbonization
Tungsten.
10. the manufacturing method of composite bolt according to claim 7, it is characterised in that: there are two at least one kerve tools
From the circumferential surface toward the center of circle and each other towards oppositely extending limiting section.
11. the manufacturing method of composite bolt according to claim 7, it is characterised in that: at least one kerve is by described
The center of circle extends to the circumferential surface along several through directions, wherein every two adjacent through direction is pressed from both sides angularly each other.
12. the manufacturing method of composite bolt according to claim 11, it is characterised in that: the quantity of the through direction is three
More than a.
13. the manufacturing method of composite bolt according to claim 7, it is characterised in that: described to add in the step (b)
Construction equipment processes several kerves for being formed in the rounded bottom surface at intervals on the bolt body, wherein every two is adjacent
Kerve each other with the center of circle folder angularly；In the step (c), prepare the several and comparable compound list of the kerve quantity
Member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810000957.4A CN109989978A (en) | 2018-01-02 | 2018-01-02 | Composite bolt and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810000957.4A CN109989978A (en) | 2018-01-02 | 2018-01-02 | Composite bolt and its manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109989978A true CN109989978A (en) | 2019-07-09 |
Family
ID=67128274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810000957.4A Pending CN109989978A (en) | 2018-01-02 | 2018-01-02 | Composite bolt and its manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109989978A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1916364A1 (en) * | 1969-03-29 | 1970-10-01 | Artur Fischer | Spreizkoerper for anchoring a bolt-shaped fastening element in a wall or the like. |
| DE1925007A1 (en) * | 1969-03-29 | 1970-11-19 | Artur Fischer | Spreizkoerper for anchoring a bolt-shaped fastening element in a wall or the like. |
| NL7018133A (en) * | 1969-12-27 | 1971-06-29 | ||
| IL34181A (en) * | 1969-03-29 | 1973-05-31 | Fischer Artur | Expansion member for anchoring bolt-type fastening means |
| US4022099A (en) * | 1976-02-06 | 1977-05-10 | General Motors Corporation | Threaded fastener with reusable thread forming pilot tip |
| ES233385U (en) * | 1977-01-19 | 1978-03-16 | Sfs Stadler Ag | Hole-drilling self-tapping screw |
| WO1993016292A1 (en) * | 1992-02-11 | 1993-08-19 | Sfs Industrie Holding Ag | Self-boring fastener |
| WO1996016274A1 (en) * | 1994-11-23 | 1996-05-30 | Ejot Verbindungstechnik Gmbh & Co. Kg | Self-cutting screw |
| CN1043677C (en) * | 1994-03-23 | 1999-06-16 | Ejot连接技术合资有限公司 | Drill, especially drilling screw |
| EP1129297B1 (en) * | 1998-11-13 | 2002-04-24 | TOGE-Dübel A. Gerhard KG | Corrosion-resistant screw with a cutting insert |
| US6619899B1 (en) * | 2002-06-10 | 2003-09-16 | Power Products Iii, Llc | Cutting insert for fasteners |
| US20190257343A1 (en) * | 2018-02-22 | 2019-08-22 | Shehkai Precision Co., Ltd. | Composite screw |
| US20190257342A1 (en) * | 2018-02-22 | 2019-08-22 | Shehkai Precision Co., Ltd. | Method of producing composite screw |
-
2018
- 2018-01-02 CN CN201810000957.4A patent/CN109989978A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1916364A1 (en) * | 1969-03-29 | 1970-10-01 | Artur Fischer | Spreizkoerper for anchoring a bolt-shaped fastening element in a wall or the like. |
| DE1925007A1 (en) * | 1969-03-29 | 1970-11-19 | Artur Fischer | Spreizkoerper for anchoring a bolt-shaped fastening element in a wall or the like. |
| IL34181A (en) * | 1969-03-29 | 1973-05-31 | Fischer Artur | Expansion member for anchoring bolt-type fastening means |
| NL7018133A (en) * | 1969-12-27 | 1971-06-29 | ||
| US4022099A (en) * | 1976-02-06 | 1977-05-10 | General Motors Corporation | Threaded fastener with reusable thread forming pilot tip |
| US4257307A (en) * | 1977-01-19 | 1981-03-24 | Sfs Stadler Ag | Hole-drilling self-tapping screw |
| ES233385U (en) * | 1977-01-19 | 1978-03-16 | Sfs Stadler Ag | Hole-drilling self-tapping screw |
| WO1993016292A1 (en) * | 1992-02-11 | 1993-08-19 | Sfs Industrie Holding Ag | Self-boring fastener |
| CN1043677C (en) * | 1994-03-23 | 1999-06-16 | Ejot连接技术合资有限公司 | Drill, especially drilling screw |
| WO1996016274A1 (en) * | 1994-11-23 | 1996-05-30 | Ejot Verbindungstechnik Gmbh & Co. Kg | Self-cutting screw |
| EP1129297B1 (en) * | 1998-11-13 | 2002-04-24 | TOGE-Dübel A. Gerhard KG | Corrosion-resistant screw with a cutting insert |
| ATE216760T1 (en) * | 1998-11-13 | 2002-05-15 | Toge Duebel A Gerhard Kg | CORROSION-RESISTANT SCREW WITH CUTTING INSERT |
| US6619899B1 (en) * | 2002-06-10 | 2003-09-16 | Power Products Iii, Llc | Cutting insert for fasteners |
| US20190257343A1 (en) * | 2018-02-22 | 2019-08-22 | Shehkai Precision Co., Ltd. | Composite screw |
| US20190257342A1 (en) * | 2018-02-22 | 2019-08-22 | Shehkai Precision Co., Ltd. | Method of producing composite screw |
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Application publication date: 20190709 |