CN106884841A - A kind of round end washer cross Self Drilling Screws and its processing technology - Google Patents
A kind of round end washer cross Self Drilling Screws and its processing technology Download PDFInfo
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- CN106884841A CN106884841A CN201710222886.8A CN201710222886A CN106884841A CN 106884841 A CN106884841 A CN 106884841A CN 201710222886 A CN201710222886 A CN 201710222886A CN 106884841 A CN106884841 A CN 106884841A
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- screw
- screw rod
- protective cover
- drilling
- threading
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Links
- 238000005553 drilling Methods 0.000 title claims abstract description 98
- 238000005516 engineering process Methods 0.000 title claims description 17
- 230000001681 protective effect Effects 0.000 claims abstract description 62
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 19
- 238000005520 cutting process Methods 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 238000005496 tempering Methods 0.000 claims description 21
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 17
- 238000010791 quenching Methods 0.000 claims description 15
- 230000000171 quenching effect Effects 0.000 claims description 15
- 229910001220 stainless steel Inorganic materials 0.000 claims description 15
- 238000005554 pickling Methods 0.000 claims description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 229910019142 PO4 Inorganic materials 0.000 claims description 10
- 238000000137 annealing Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 10
- 238000000465 moulding Methods 0.000 claims description 10
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 10
- 239000010452 phosphate Substances 0.000 claims description 10
- 239000010935 stainless steel Substances 0.000 claims description 10
- 238000003466 welding Methods 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000003032 molecular docking Methods 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 5
- 229910000635 Spelter Inorganic materials 0.000 claims description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 5
- 239000004411 aluminium Substances 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 229920001971 elastomer Polymers 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 239000000314 lubricant Substances 0.000 claims description 5
- 229910052748 manganese Inorganic materials 0.000 claims description 5
- 239000011572 manganese Substances 0.000 claims description 5
- 239000003921 oil Substances 0.000 claims description 5
- 238000004806 packaging method and process Methods 0.000 claims description 5
- 229910052698 phosphorus Inorganic materials 0.000 claims description 5
- 239000011574 phosphorus Substances 0.000 claims description 5
- 238000007747 plating Methods 0.000 claims description 5
- 229920000642 polymer Polymers 0.000 claims description 5
- 229920001296 polysiloxane Polymers 0.000 claims description 5
- -1 polysiloxanes Polymers 0.000 claims description 5
- 239000011701 zinc Substances 0.000 claims description 5
- 229910052725 zinc Inorganic materials 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 2
- 239000004677 Nylon Substances 0.000 description 4
- 229920001778 nylon Polymers 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
Classifications
-
- 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
- F16B25/10—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws
-
- 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
- F16B41/00—Measures against loss of bolts, nuts, or pins; Measures against unauthorised operation of bolts, nuts or pins
-
- 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
- F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
Abstract
The invention discloses a kind of round end washer cross Self Drilling Screws, including nut, screw rod and the drilling tail for setting gradually, nut, screw rod and drilling tail are formed in one structure；The junction of nut and screw rod is provided with protective cover, and screw rod is perpendicular to disc and the screw rod axis along its length of protective cover through the center of circle of protective cover；Protective cover is equipped with washer pad away from the one side of nut, and washer pad fixes drilling tail away from multiple sharp cone distals are uniformly distributed in the one side of protective cover, and fixed drilling tail offers screw thread all over the body on screw rod parallel to screw rod around it；Drilling tail is sharp cone distal, and it is hollow cutting structure that it is internal, that is, form internal cavities, and internal cavities inside is filled with anticorrosion silicon rubber, the groove for chip removal is offered in sharp cone distal drilling tail；Round end washer cross Self Drilling Screws of the invention not only increases operating efficiency, reduces learies, time saving and energy saving, energy-efficient, and reduces production cost, and production stage is simple, time saving and energy saving.
Description
Technical field
The present invention relates to a kind of round end washer cross Self Drilling Screws and its processing technology, belong to fastening or fixing component technology
Field.
Background technology
Screw is the physics and mathematical principle of the inclined-plane circular rotating and frictional force for utilizing object, is fastened by easy stages
The instrument of implements parts；Self Drilling Screws is the new invention of people in recent years, is also self-tapping screw, and the afterbody of Self Drilling Screws is in drilling tail
Or fine stern shape, without secondary process, directly drilling, tapping, locking on material, basic material can be set, significantly save construction
Time, however, existing Self Drilling Screws also has certain, inefficiency, it is fragile, and make the mistake of screw
Journey is complex and learies are big, and making step is complex, time saving and energy saving to improve operating efficiency, reduces learies, this hair
It is bright to propose a kind of round end washer cross Self Drilling Screws and its processing technology.
The content of the invention
The technical problem to be solved in the present invention is, in view of the shortcomings of the prior art, proposing a kind of round end washer cross drilling tail spiral shell
Silk and its processing technology.
The present invention is that the technical scheme for solving above-mentioned technical problem proposition is：A kind of round end washer cross Self Drilling Screws, bag
Include nut, screw rod and the drilling tail for setting gradually, nut, screw rod and drilling tail are formed in one structure；The company of nut and screw rod
The place of connecing is provided with protective cover, screw rod perpendicular to disc and the screw rod axis along its length of protective cover through protective cover circle
The heart；
Protective cover is equipped with washer pad away from the one side of nut, and washer pad is more away from being uniformly distributed in the one side of protective cover
Individual sharp cone distal fixes drilling tail, and fixed drilling tail offers screw thread all over the body on screw rod parallel to screw rod around it；
Drilling tail is sharp cone distal, and it is hollow cutting structure that it is internal, that is, form internal cavities, and internal cavities inside is filled with anti-corrosion
Erosion silicon rubber, offers the groove for chip removal in sharp cone distal drilling tail.
The technical scheme that further limits of the invention is：
Foregoing round end washer cross Self Drilling Screws, protective cover uses nylon material, and the washer pad on protective cover is using stainless
Steel matter.
Foregoing round end washer cross Self Drilling Screws, nut forms island shape and protrudes away from the middle part of the end face of protective cover
Portion, the upper surface of protuberance offers cross docking recess.
Foregoing round end washer cross Self Drilling Screws, the material of anticorrosion silicon rubber is polysiloxanes high molecular polymer.
Foregoing round end washer cross Self Drilling Screws, nut is rigid quality of rubber materials, and the outer surface of screw rod and drilling tail is equal
With zinc coat.
The processing technology of round end washer cross Self Drilling Screws of the invention, comprises the following steps：
（One）Wire rod prepares：The wire rod is STAINLESS STEEL WIRE, and wherein stainless steel is nickeliferous：2.2-2.7%, copper：3-6%, carbon：
14-17%, manganese：10.3-11.2%, phosphorus：4.9-5.3%, aluminium：5.6-5.8%, balance of iron, is unidirectionally moved by moveable scissor
It is dynamic, prepare cylindrical blank by the volume of round end washer cross Self Drilling Screws；
（Two）Annealing：75-95min, natural cooling are kept under conditions of being 380-400 DEG C in temperature by wire rod；After annealing
Wire rod is placed in and 7-12min is soaked in the hydrochloric acid that concentration is 20-25%, and clear water is cleaned, then is placed in concentration for 5-8% phosphate is molten
10-15min is soaked in liquid, clear water is cleaned, and smears appropriate lubricant；
（Three）Cold-heading：Linearmaterial cold-heading equipment after pickling is carried out into cold-heading molding, the spiral shell of screw is formed by mould molding
Cap, screw rod and drilling tail, open up out cavity and groove for cuttings at drilling tail；
（Four）Threading：Screw thread is rubbed on the screw rod of screw using threading equipment, is comprised the following steps that
A, first time threading, shallow thread is rubbed using threading equipment on the screw rod of screw；
B, second threading, threading intensification is carried out using threading equipment on the shallow thread on the screw rod of screw；
C, third time threading, final spiral shell is rubbed on the basis of preceding threading twice using threading equipment on the screw rod of screw
Line；
（Five）Cleaning is deoiled；
（Six）Screw is heat-treated, concrete technology is：
A, heating：Screw is heated to 750-800 DEG C, and is incubated 3-5 hours；
B, cooling：After using the air-cooled cooldown rate with 20-25 DEG C/s to accelerate to be cooled to 460-490 DEG C by screw, then it is air cooled to
Room temperature；
C, once it is tempered：After screw is heated into 450-480 DEG C of tempering 25-35min, warm 35-40s is treated, make screw temperature uniform
Change, after accelerating to be cooled to 330-350 DEG C with the cooldown rate of 22-26 DEG C/s afterwards, then be air cooled to room temperature；
D, screw is heated to 700-750 DEG C, quenching 45-50min is carried out in quenching oil, then be air cooled to room temperature；
E, double tempering：By the screw after quenching be heated to 550-570 DEG C tempering 40-45min, after be air cooled to room temperature；
（Seven）Pickling again：Screw after tempering is placed in 16-19min is soaked in the hydrochloric acid that concentration is 20-23%, clear water is cleaned,
Concentration is placed in again to soak 22-27min in 3-4% phosphate solutions, is finally cleaned with clear water；
（Eight）Plating：Pure spelter coating is electroplated in screw outer surface；
（Nine）Clean and dry；
（Ten）Protective cover is installed, original protective cover is that, without escutcheon, protective cover is integrally formed with washer pad and fixed drilling tail, root
Perforate is carried out according to Screw rod size, by protective cover and screw rod welding fabrication；
（11）To anticorrosion silicon rubber is injected in the cavity of screw rod bottom, sealed using electric welding after filling up；
（12）Packaging.
The present invention is using the beneficial effect of above-mentioned technical proposal：Nut is provided with protection with the junction of screw rod in the present invention
Cover, protective cover is provided with and fixed drilling tail is uniformly provided with washer pad, and washer pad, effectively raises operating efficiency, makes
Between screw and workpiece more firmly, fixed drilling tail is had an effect with the drilling tail cooperation of screw bottom, alleviates staff's
Workload so that fastened by screw effect is good, time saving and energy saving, the cutting portion of screw in hollow-core construction, and hollow-core construction to be filled with
Moistureproof silicon rubber, changes the big present situation of screw learies, and silicon rubber with protection against the tide, can strengthen practicality and the utilization of screw
Rate, reduces learies, protects environment, and the technical scheme simple structure, easy to use, safeguards simple；Current spiral shell
During silk processing, threading is once completed, and the substandard products screw such as screw thread process deviation and screw thread disconnection, round end China of the invention easily occurs
Using the method for multiple threading when department's cross Self Drilling Screws is due to threading, gradually deepen screw thread, defect rate greatly reduces, enter
One step improves the corrosion-resistant and rust-resisting property of screw, it is ensured that the stability of screw locking, round end washer cross of the invention
Screw is carried out heat treatment and the stability of screw structural is kept by double tempering by Self Drilling Screws, and employs pickling twice,
Once before threading, after being once arranged in threading, greatly reduce the scrappage of screw, further improve the toughness of screw with
And practicality, it is simple the step of making screw in the present invention, it is time saving and energy saving.
Brief description of the drawings
The invention will be further described below in conjunction with the accompanying drawings：
Fig. 1 is the structural representation of invention；
Fig. 2 is the structural representation of nut in invention；
Wherein：1- nuts, 2- screw rods, 3- drilling tails, 4- protective covers, 5- washer pads, 6- fixation drilling tails, 7- anticorrosion silicon rubber,
8- grooves, 9- docking recess.
Specific embodiment
Embodiment 1
A kind of round end washer cross Self Drilling Screws of the present embodiment, including nut 1, screw rod 2 and the drilling tail 3 for setting gradually, its
It is characterised by：Nut 1, screw rod 2 and drilling tail 3 are formed in one structure；Nut 1 is provided with protective cover 4 with the junction of screw rod 2,
Screw rod 2 passes through the center of circle of protective cover 4 perpendicular to the disc of protective cover 4 and the axis along its length of screw rod 2；
Protective cover 4 is equipped with washer pad 5 away from the one side of nut 1, and washer pad 5 is away from uniform in the one side of protective cover 4
The multiple sharp cone distals of distribution fix drilling tail 6, and fixed drilling tail 6 offers screw thread all over the body on screw rod 2 parallel to screw rod 2 around it；Drilling tail
3 is sharp cone distal, and it is hollow cutting structure that it is internal, that is, form internal cavities, and internal cavities inside is filled with anticorrosion silicon rubber
Glue 7, offers the groove 8 for chip removal in sharp cone distal drilling tail.
Protective cover 4 uses nylon material, and the washer pad 6 on protective cover 4 uses stainless steel；Nut 1 is away from protection
The middle part of the end face of cover 4 forms island shape protuberance, and the upper surface of protuberance offers cross docking recess 9；Anticorrosion
The material of silicon rubber 7 is polysiloxanes high molecular polymer；Nut 1 is the appearance of rigid quality of rubber materials, screw rod 2 and drilling tail 3
Face is respectively provided with zinc coat.
The processing technology of round end washer cross Self Drilling Screws of the invention, comprises the following steps：
（One）Wire rod prepares：The wire rod is STAINLESS STEEL WIRE, and wherein stainless steel is nickeliferous：2.2%, copper：3%, carbon：14%, manganese：
10.3%, phosphorus：4.9%, aluminium：5.6%, balance of iron is unidirectionally moved by moveable scissor, by round end washer cross Self Drilling Screws
Volume prepare cylindrical blank；
（Two）Annealing：75min, natural cooling are kept under conditions of being 380 DEG C in temperature by wire rod；Wire rod after annealing is put
7min is soaked in the hydrochloric acid that concentration is 20%, clear water is cleaned, then is placed in concentration to soak 10min in 5% phosphate solution,
Clear water is cleaned, and smears appropriate lubricant；
（Three）Cold-heading：Linearmaterial cold-heading equipment after pickling is carried out into cold-heading molding, the spiral shell of screw is formed by mould molding
Cap, screw rod and drilling tail, open up out cavity and groove for cuttings at drilling tail；
（Four）Threading：Screw thread is rubbed on the screw rod of screw using threading equipment, is comprised the following steps that
A, first time threading, shallow thread is rubbed using threading equipment on the screw rod of screw；
B, second threading, threading intensification is carried out using threading equipment on the shallow thread on the screw rod of screw；
C, third time threading, final spiral shell is rubbed on the basis of preceding threading twice using threading equipment on the screw rod of screw
Line；
（Five）Cleaning is deoiled；
（Six）Screw is heat-treated, concrete technology is：
A, heating：Screw is heated to 750 DEG C, and is incubated 3 hours；
B, cooling：After using the air-cooled cooldown rate with 20 DEG C/s to accelerate to be cooled to 460 DEG C by screw, then it is air cooled to room temperature；
C, once it is tempered：After screw is heated into 450 DEG C of tempering 25min, warm 35s is treated, make screw equalizing temperature, afterwards with 22
DEG C/after the cooldown rate of s accelerates to be cooled to 330 DEG C, then it is air cooled to room temperature；
D, screw is heated to 700 DEG C, quenching 45min is carried out in quenching oil, then be air cooled to room temperature；
E, double tempering：By the screw after quenching be heated to 550 DEG C tempering 40min, after be air cooled to room temperature；
（Seven）Pickling again：Screw after tempering is placed in 16min is soaked in the hydrochloric acid that concentration is 20%, clear water is cleaned, then is placed in
Concentration is finally cleaned to soak 22min in 3% phosphate solution with clear water；
（Eight）Plating：Pure spelter coating is electroplated in screw outer surface；
（Nine）Clean and dry；
（Ten）Protective cover is installed, original protective cover is that, without escutcheon, protective cover is integrally formed with washer pad and fixed drilling tail, root
Perforate is carried out according to Screw rod size, by protective cover and screw rod welding fabrication；
（11）To anticorrosion silicon rubber is injected in the cavity of screw rod bottom, sealed using electric welding after filling up；
（12）Packaging.
Embodiment 2
A kind of round end washer cross Self Drilling Screws of the present embodiment, including nut 1, screw rod 2 and the drilling tail 3 for setting gradually, its
It is characterised by：Nut 1, screw rod 2 and drilling tail 3 are formed in one structure；Nut 1 is provided with protective cover 4 with the junction of screw rod 2,
Screw rod 2 passes through the center of circle of protective cover 4 perpendicular to the disc of protective cover 4 and the axis along its length of screw rod 2；
Protective cover 4 is equipped with washer pad 5 away from the one side of nut 1, and washer pad 5 is away from uniform in the one side of protective cover 4
The multiple sharp cone distals of distribution fix drilling tail 6, and fixed drilling tail 6 offers screw thread all over the body on screw rod 2 parallel to screw rod 2 around it；Drilling tail
3 is sharp cone distal, and it is hollow cutting structure that it is internal, that is, form internal cavities, and internal cavities inside is filled with anticorrosion silicon rubber
Glue 7, offers the groove 8 for chip removal in sharp cone distal drilling tail.
Protective cover 4 uses nylon material, and the washer pad 6 on protective cover 4 uses stainless steel；Nut 1 is away from protection
The middle part of the end face of cover 4 forms island shape protuberance, and the upper surface of protuberance offers cross docking recess 9；Anticorrosion
The material of silicon rubber 7 is polysiloxanes high molecular polymer；Nut 1 is the appearance of rigid quality of rubber materials, screw rod 2 and drilling tail 3
Face is respectively provided with zinc coat.
The processing technology of round end washer cross Self Drilling Screws of the invention, comprises the following steps：
（One）Wire rod prepares：The wire rod is STAINLESS STEEL WIRE, and wherein stainless steel is nickeliferous：2.7%, copper：6%, carbon：17%, manganese：
11.2%, phosphorus：5.3%, aluminium：5.8%, balance of iron is unidirectionally moved by moveable scissor, by round end washer cross Self Drilling Screws
Volume prepare cylindrical blank；
（Two）Annealing：95min, natural cooling are kept under conditions of being 400 DEG C in temperature by wire rod；Wire rod after annealing is put
12min is soaked in the hydrochloric acid that concentration is 25%, clear water is cleaned, then be placed in concentration to be soaked in 8% phosphate solution
15min, clear water is cleaned, and smears appropriate lubricant；
（Three）Cold-heading：Linearmaterial cold-heading equipment after pickling is carried out into cold-heading molding, the spiral shell of screw is formed by mould molding
Cap, screw rod and drilling tail, open up out cavity and groove for cuttings at drilling tail；
（Four）Threading：Screw thread is rubbed on the screw rod of screw using threading equipment, is comprised the following steps that
A, first time threading, shallow thread is rubbed using threading equipment on the screw rod of screw；
B, second threading, threading intensification is carried out using threading equipment on the shallow thread on the screw rod of screw；
C, third time threading, final spiral shell is rubbed on the basis of preceding threading twice using threading equipment on the screw rod of screw
Line；
（Five）Cleaning is deoiled；
（Six）Screw is heat-treated, concrete technology is：
A, heating：Screw is heated to 800 DEG C, and is incubated 5 hours；
B, cooling：After using the air-cooled cooldown rate with 25 DEG C/s to accelerate to be cooled to 490 DEG C by screw, then it is air cooled to room temperature；
C, once it is tempered：After screw is heated into 480 DEG C of tempering 35min, warm 40s is treated, make screw equalizing temperature, afterwards with 26
DEG C/after the cooldown rate of s accelerates to be cooled to 350 DEG C, then it is air cooled to room temperature；
D, screw is heated to 750 DEG C, quenching 50min is carried out in quenching oil, then be air cooled to room temperature；
E, double tempering：By the screw after quenching be heated to 570 DEG C tempering 45min, after be air cooled to room temperature；
（Seven）Pickling again：Screw after tempering is placed in 19min is soaked in the hydrochloric acid that concentration is 23%, clear water is cleaned, then is placed in
Concentration is finally cleaned to soak 27min in 4% phosphate solution with clear water；
（Eight）Plating：Pure spelter coating is electroplated in screw outer surface；
（Nine）Clean and dry；
（Ten）Protective cover is installed, original protective cover is that, without escutcheon, protective cover is integrally formed with washer pad and fixed drilling tail, root
Perforate is carried out according to Screw rod size, by protective cover and screw rod welding fabrication；
（11）To anticorrosion silicon rubber is injected in the cavity of screw rod bottom, sealed using electric welding after filling up；
（12）Packaging.
Embodiment 3
A kind of round end washer cross Self Drilling Screws of the present embodiment, including nut 1, screw rod 2 and the drilling tail 3 for setting gradually, its
It is characterised by：Nut 1, screw rod 2 and drilling tail 3 are formed in one structure；Nut 1 is provided with protective cover 4 with the junction of screw rod 2,
Screw rod 2 passes through the center of circle of protective cover 4 perpendicular to the disc of protective cover 4 and the axis along its length of screw rod 2；
Protective cover 4 is equipped with washer pad 5 away from the one side of nut 1, and washer pad 5 is away from uniform in the one side of protective cover 4
The multiple sharp cone distals of distribution fix drilling tail 6, and fixed drilling tail 6 offers screw thread all over the body on screw rod 2 parallel to screw rod 2 around it；Drilling tail
3 is sharp cone distal, and it is hollow cutting structure that it is internal, that is, form internal cavities, and internal cavities inside is filled with anticorrosion silicon rubber
Glue 7, offers the groove 8 for chip removal in sharp cone distal drilling tail.
Protective cover 4 uses nylon material, and the washer pad 6 on protective cover 4 uses stainless steel；Nut 1 is away from protection
The middle part of the end face of cover 4 forms island shape protuberance, and the upper surface of protuberance offers cross docking recess 9；Anticorrosion
The material of silicon rubber 7 is polysiloxanes high molecular polymer；Nut 1 is the appearance of rigid quality of rubber materials, screw rod 2 and drilling tail 3
Face is respectively provided with zinc coat.
The processing technology of round end washer cross Self Drilling Screws of the invention, comprises the following steps：
（One）Wire rod prepares：The wire rod is STAINLESS STEEL WIRE, and wherein stainless steel is nickeliferous：2.5%, copper：4%, carbon：15%, manganese：
11%, phosphorus：5.2%, aluminium：5.7%, balance of iron is unidirectionally moved by moveable scissor, by round end washer cross Self Drilling Screws
Volume prepares cylindrical blank；
（Two）Annealing：80min, natural cooling are kept under conditions of being 390 DEG C in temperature by wire rod；Wire rod after annealing is put
10min is soaked in the hydrochloric acid that concentration is 22%, clear water is cleaned, then be placed in concentration to be soaked in 6% phosphate solution
12min, clear water is cleaned, and smears appropriate lubricant；
（Three）Cold-heading：Linearmaterial cold-heading equipment after pickling is carried out into cold-heading molding, the spiral shell of screw is formed by mould molding
Cap, screw rod and drilling tail, open up out cavity and groove for cuttings at drilling tail；
（Four）Threading：Screw thread is rubbed on the screw rod of screw using threading equipment, is comprised the following steps that
A, first time threading, shallow thread is rubbed using threading equipment on the screw rod of screw；
B, second threading, threading intensification is carried out using threading equipment on the shallow thread on the screw rod of screw；
C, third time threading, final spiral shell is rubbed on the basis of preceding threading twice using threading equipment on the screw rod of screw
Line；
（Five）Cleaning is deoiled；
（Six）Screw is heat-treated, concrete technology is：
A, heating：Screw is heated to 780 DEG C, and is incubated 4 hours；
B, cooling：After using the air-cooled cooldown rate with 23 DEG C/s to accelerate to be cooled to 470 DEG C by screw, then it is air cooled to room temperature；
C, once it is tempered：After screw is heated into 470 DEG C of tempering 30min, warm 38s is treated, make screw equalizing temperature, afterwards with 24
DEG C/after the cooldown rate of s accelerates to be cooled to 340 DEG C, then it is air cooled to room temperature；
D, screw is heated to 720 DEG C, quenching 47min is carried out in quenching oil, then be air cooled to room temperature；
E, double tempering：By the screw after quenching be heated to 560 DEG C tempering 42min, after be air cooled to room temperature；
（Seven）Pickling again：Screw after tempering is placed in 17min is soaked in the hydrochloric acid that concentration is 22%, clear water is cleaned, then is placed in
Concentration is finally cleaned to soak 25min in 3% phosphate solution with clear water；
（Eight）Plating：Pure spelter coating is electroplated in screw outer surface；
（Nine）Clean and dry；
（Ten）Protective cover is installed, original protective cover is that, without escutcheon, protective cover is integrally formed with washer pad and fixed drilling tail, root
Perforate is carried out according to Screw rod size, by protective cover and screw rod welding fabrication；
（11）To anticorrosion silicon rubber is injected in the cavity of screw rod bottom, sealed using electric welding after filling up；
（12）Packaging.
The present invention is not limited to above-described embodiment.The technical scheme that all use equivalents are formed, all falling within the present invention will
The protection domain asked.
Claims (6)
1. a kind of round end washer cross Self Drilling Screws, including the nut for setting gradually（1）, screw rod（2）And drilling tail（3）, it is special
Levy and be：The nut（1）, screw rod（2）And drilling tail（3）Be formed in one structure；The nut（1）With screw rod（2）Company
The place of connecing is provided with protective cover（4）, the screw rod（2）Perpendicular to protective cover（4）Disc and the screw rod（2）Along its length
Axis passes through protective cover（4）The center of circle；
The protective cover（4）Away from nut（1）One side be equipped with washer pad（5）, the washer pad（5）Away from protection
Cover（4）One side on be uniformly distributed multiple sharp cone distals and fix drilling tails（6）, and the fixed drilling tail（6）Parallel to screw rod（2）, institute
State screw rod（2）On offer screw thread all over the body around it；
The drilling tail（3）It is sharp cone distal, and it is hollow cutting structure that it is internal, that is, internal cavities are formed, in the internal cavities
Portion is filled with anticorrosion silicon rubber（7）, the groove for chip removal is offered in the sharp cone distal drilling tail（8）.
2. round end washer cross Self Drilling Screws according to claim 1, it is characterised in that：The protective cover（4）Using Buddhist nun
Imperial material, the protective cover（4）On washer pad（6）Using stainless steel.
3. round end washer cross Self Drilling Screws according to claim 1, it is characterised in that：The nut（1）Away from protection
Cover（4）End face middle part formed island shape protuberance, the upper surface of the protuberance offers cross docking recess
（9）.
4. round end washer cross Self Drilling Screws according to claim 1, it is characterised in that：The anticorrosion silicon rubber（7）
Material be polysiloxanes high molecular polymer.
5. round end washer cross Self Drilling Screws according to claim 1, it is characterised in that：The nut（1）It is rigid rubber
Glue material matter, the screw rod（2）And drilling tail（3）Outer surface be respectively provided with zinc coat.
6. the processing technology of the round end washer cross Self Drilling Screws described in any claim according to claim 1-5, it is special
Levy and be：Comprise the following steps：
（One）Wire rod prepares：The wire rod is STAINLESS STEEL WIRE, and wherein stainless steel is nickeliferous：2.2-2.7%, copper：3-6%, carbon：
14-17%, manganese：10.3-11.2%, phosphorus：4.9-5.3%, aluminium：5.6-5.8%, balance of iron, is unidirectionally moved by moveable scissor
It is dynamic, prepare cylindrical blank by the volume of round end washer cross Self Drilling Screws；
（Two）Annealing：75-95min, natural cooling are kept under conditions of being 380-400 DEG C in temperature by wire rod；After annealing
Wire rod is placed in and 7-12min is soaked in the hydrochloric acid that concentration is 20-25%, and clear water is cleaned, then is placed in concentration for 5-8% phosphate is molten
10-15min is soaked in liquid, clear water is cleaned, and smears appropriate lubricant；
（Three）Cold-heading：Linearmaterial cold-heading equipment after pickling is carried out into cold-heading molding, the spiral shell of screw is formed by mould molding
Cap, screw rod and drilling tail, open up out cavity and groove for cuttings at drilling tail；
（Four）Threading：Screw thread is rubbed on the screw rod of screw using threading equipment, is comprised the following steps that
A, first time threading, shallow thread is rubbed using threading equipment on the screw rod of screw；
B, second threading, threading intensification is carried out using threading equipment on the shallow thread on the screw rod of screw；
C, third time threading, final spiral shell is rubbed on the basis of preceding threading twice using threading equipment on the screw rod of screw
Line；
（Five）Cleaning is deoiled；
（Six）Screw is heat-treated, concrete technology is：
A, heating：Screw is heated to 750-800 DEG C, and is incubated 3-5 hours；
B, cooling：After using the air-cooled cooldown rate with 20-25 DEG C/s to accelerate to be cooled to 460-490 DEG C by screw, then it is air cooled to
Room temperature；
C, once it is tempered：After screw is heated into 450-480 DEG C of tempering 25-35min, warm 35-40s is treated, make screw temperature uniform
Change, after accelerating to be cooled to 330-350 DEG C with the cooldown rate of 22-26 DEG C/s afterwards, then be air cooled to room temperature；
D, screw is heated to 700-750 DEG C, quenching 45-50min is carried out in quenching oil, then be air cooled to room temperature；
E, double tempering：By the screw after quenching be heated to 550-570 DEG C tempering 40-45min, after be air cooled to room temperature；
（Seven）Pickling again：Screw after tempering is placed in 16-19min is soaked in the hydrochloric acid that concentration is 20-23%, clear water is cleaned,
Concentration is placed in again to soak 22-27min in 3-4% phosphate solutions, is finally cleaned with clear water；
（Eight）Plating：Pure spelter coating is electroplated in screw outer surface；
（Nine）Clean and dry；
（Ten）Protective cover is installed, original protective cover is that, without escutcheon, protective cover is integrally formed with washer pad and fixed drilling tail, root
Perforate is carried out according to Screw rod size, by protective cover and screw rod welding fabrication；
（11）To anticorrosion silicon rubber is injected in the cavity of screw rod bottom, sealed using electric welding after filling up；
（12）Packaging.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710222886.8A CN106884841A (en) | 2017-04-07 | 2017-04-07 | A kind of round end washer cross Self Drilling Screws and its processing technology |
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|---|---|---|---|
| CN201710222886.8A CN106884841A (en) | 2017-04-07 | 2017-04-07 | A kind of round end washer cross Self Drilling Screws and its processing technology |
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| CN106884841A true CN106884841A (en) | 2017-06-23 |
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| CN201710222886.8A Pending CN106884841A (en) | 2017-04-07 | 2017-04-07 | A kind of round end washer cross Self Drilling Screws and its processing technology |
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| CN108252994A (en) * | 2018-01-19 | 2018-07-06 | 重庆大有表面技术有限公司 | Expansion bolt |
| CN108620823A (en) * | 2017-12-30 | 2018-10-09 | 俞祖林 | The production method of modified form screw with metal gasket |
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| CN110081060A (en) * | 2019-05-30 | 2019-08-02 | 浙江洪扬汽车零部件有限公司 | A kind of novel dust lead type drilling screw rod |
| CN112648276A (en) * | 2020-11-05 | 2021-04-13 | 苏州华丰不锈钢紧固件有限公司 | T-shaped bolt and manufacturing method thereof |
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Application publication date: 20170623 |