CN104043944A - Drill tail thread forming method - Google Patents
Drill tail thread forming method Download PDFInfo
- Publication number
- CN104043944A CN104043944A CN201310079670.2A CN201310079670A CN104043944A CN 104043944 A CN104043944 A CN 104043944A CN 201310079670 A CN201310079670 A CN 201310079670A CN 104043944 A CN104043944 A CN 104043944A
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- China
- Prior art keywords
- forming
- rod
- brill
- tail
- stock
- Prior art date
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- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000005520 cutting process Methods 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 11
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 56
- 238000005553 drilling Methods 0.000 claims description 25
- 238000002360 preparation method Methods 0.000 claims description 7
- 241000278713 Theora Species 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 238000003490 calendering Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 17
- 230000002950 deficient Effects 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 5
- 238000013461 design Methods 0.000 abstract description 4
- 238000010606 normalization Methods 0.000 abstract description 4
- 238000007514 turning Methods 0.000 abstract description 2
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 230000008569 process Effects 0.000 description 12
- 238000012545 processing Methods 0.000 description 12
- 238000007493 shaping process Methods 0.000 description 12
- 238000000465 moulding Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 4
- 238000003892 spreading Methods 0.000 description 4
- 230000007480 spreading Effects 0.000 description 4
- 230000008034 disappearance Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- BGOFCVIGEYGEOF-UJPOAAIJSA-N helicin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1C=O BGOFCVIGEYGEOF-UJPOAAIJSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000011160 research Methods 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
- F16B25/10—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses a drill tail thread forming method. The drill tail thread forming method sequentially comprises a material preparing step, a preliminary forming step, a drill tail forming step, a thread forming step and the like, wherein in the preliminary forming step, a rod body and a thread head are initially formed by using a blank material firstly, then, in the drill tail forming step, the blank material is clamped and cut by using a forming knife design, so as to form at least one row of chip groove, a cutting edge and the like on the rod body, and finally, in the thread forming step, forming threads in the peripheral surface of the rod body. By the method, due to the manufacturing manner, the method has the effects that the production quality can achieve normalization, the existing manufacturing disadvantage that clamping and turning are not easily controlled is avoided, the production speed is greatly increased, the fraction defective of production is lowered, and the like.
Description
Technical field
The present invention relates to a kind of screw processing molding method, refer in particular to a kind of Self Drilling Screws forming method.
Background technology
Consult Fig. 1, Fig. 2, existing Self Drilling Screws forming method 1 includes a material preparation step 11, a preliminary forming step 12, a spreading step 13, a brill tail forming step 14 and a thread forming step 15; Wherein, this material preparation step 11 is prepared the metal stock a of a suitable length in advance; Separately, this preliminary forming step 12 forms this stock a respectively one body of rod 21, is formed in the spiral shell head 22 of these body of rod 21 one end, and a brill tail shaping district 23 in contrast to these body of rod 21 one end; In this spreading step 13, utilize a spreading mould 131 that this brill tail shaping district 23 is given to punching press and form a flat again.
Still continuous aforementioned, this brill tail forming step 14 utilizes fixture 141 to clamp respectively the place such as this spiral shell head 22 and this brill tail shaping district 23, finally reverse for the fixture 141 at these 23 places of brill tail shaping district of clamping again, so that this brill tail shaping district 23 is able to be reversed the spiral helicine brill afterbody 231 of formation one tool; Finally, utilize this thread forming step 15, its threading forming machine (not shown) of having got everything ready, and utilize this threading forming machine on this body of rod 21, to be molded multiple threads 24, so complete the manufacture of this existing Self Drilling Screws 2.
So, though the manufacture forming method 1 of this existing Self Drilling Screws plastic go out operational Self Drilling Screws 2, but on processing procedure, still have following disappearance, hereby details are as follows:
1. fraction defective is high
Due to the moulding of this brill afterbody 231, completely by these fixture 141 twisting formations, so whether smoothly this brill afterbody 231 key of moulding depends on the torsion power that this fixture 141 is bestowed, and the factor such as this fixture 141 rotational angles, finally add this brill tail shaping district 23 and strike out flat and have certain length, thus issuable changes in material, therefore, if the application of force is too small and rotational angle is not enough in twist process, will make this brill tail shaping district 23 effectively moulding; Otherwise, if the application of force is excessive and rotational angle too etc. when situation, not only make this brill tail shaping district 23 that is flat excessively be reversed, cause the generation of defective products, what is more, this brill tail shaping district 23 produces irregular rotation in the time reversing, and can make this brill tail shaping district 23 be out of shape even rhegma, more increase the generation of defective products, real to be improved.
2. process velocity is slow
In process, utilize the moulding of reversing as reaching this brill tail shaping district 23, adding when this fixture 141 rotates has certain inertia force to produce, so taking into account under the factors such as processing yield and this brill afterbody 231 moulding accuracy, operating speed is reversed in its processing can not be too fast, otherwise can affect this brill afterbody 231 and process yield, relatively, its speed of production also can synchronously be affected.
In view of this, the inventor is for not attaining perfect caused many disappearances and inconvenience on above-mentioned Self Drilling Screws forming method, and deeply design, and active research improvement has a fling at and development and Design goes out this case.
Summary of the invention
The object of the present invention is to provide a kind of Self Drilling Screws forming method, it has minimizing because of improper the produced scale error of the application of force, promotes process velocity, reduces the effects such as bad, expense cost is low.
In order to reach above-mentioned purpose, solution of the present invention is:
A kind of Self Drilling Screws forming method, it sequentially includes:
One material preparation step, it prepares the stock of a metal material, one preliminary forming step, stock is formed respectively a body of rod by it, and be formed in the spiral shell head of this body of rod one end, one bores tail forming step, it is prepared one and bores tail forming machine, and this brill tail forming machine has the grip unit of this stock of clamping, at least one forming cutter cutting for this body of rod, and the brill tail cutter that can grind for this body of rod, wherein, first this grip unit clamps this body of rod, this forming cutter cuts on this body of rod, bore afterbody and form one, simultaneously on this brill afterbody and form at least one chip removal flute that spiral is offered that is on this body of rod, finally coordinate again this brill tail knife needle to carry out grinding to the ora terminalis of this brill afterbody, this body of rod is positioned at this brill afterbody ora terminalis place and is formed with a cutting edge, and a thread forming step, it carries out the operation of thread calendering forming for this body of rod.
Above-mentioned grip unit clamps this stock and rotates, and coordinates this forming cutter to advance, cut and form.
It is motionless that above-mentioned grip unit clamps this stock, coordinates this forming cutter to rotate and advance, cut, and on this body of rod, molds chip removal flute.
Above-mentioned forming cutter has two, and is corresponding setting.
Adopt after said structure, the present invention clamps this body of rod by this grip unit, so that this forming cutter is able to mold at least one chip removal flute and a cutting edge on this body of rod with brill tail cutter, finally again through this thread forming step, the circumferential surface of this body of rod is molded to thread, as make this complete this Self Drilling Screws manufacture; Be with, see through this manufacture mode of production of this brill tail forming step, can make this body of rod directly be cut moulding and go out a brill afterbody, carry out again following process processing in order to do profit, utilize this add mode not only can avoid existing because of the uppity disappearance facts life of clamping rotation, can make quality of production normalization, to reduce fraction defective, simultaneously more favourable shortenings man-hour is with effects such as enhancement working (machining) efficiencies.
Brief description of the drawings
Fig. 1 is existing Self Drilling Screws forming method flow chart;
Fig. 2 is this existing Self Drilling Screws forming process schematic diagram;
Fig. 3 is the Self Drilling Screws forming method flow chart of a preferred embodiment of the present invention;
Fig. 4 is the preliminary forming process schematic diagram of this preferred embodiment;
Fig. 5 is the member schematic diagram of the brill tail forming machine of this preferred embodiment;
Fig. 6 is the Self Drilling Screws forming process schematic diagram of this preferred embodiment.
Primary clustering symbol description
3 Self Drilling Screws forming method 31 material preparation steps
32 preliminary forming steps 33 bore tail forming step
34 thread forming steps 331 bore tail forming machine
332 grip unit 333 forming cutters
334 bore tail cutter A stock
4 Self Drilling Screws 41 bodies of rod
42 spiral shell heads 43 bore afterbody
44 thread 431 chip removal flutes
432 cutting edges.
Detailed description of the invention
In order further to explain technical scheme of the present invention, below by specific embodiment, the present invention will be described in detail.
Consult Fig. 3, Fig. 4, a preferred embodiment of the present invention, the present embodiment Self Drilling Screws forming method 3 sequentially includes material preparation step 31, preliminary forming step 32, bores the steps such as tail forming step 33 and thread forming step 34; Wherein, in this material preparation step 31, prepare the stock A of a metal material; Separately, this preliminary forming step 32 molds respectively a body of rod 41 for this stock A, and is formed in the spiral shell head 42 of these body of rod 41 one end.
Coordinate and consult Fig. 5 again, Fig. 6, still continuous above-mentioned, in this brill tail forming step 33, prepare one and bore tail forming machine 331, wherein, this brill tail forming machine 331 has the grip unit 332 of this stock of clamping A, at least one forming cutter 333 cutting for this body of rod 41, and the brill tail cutter 334 that can grind for this body of rod 41, and aforementioned this forming cutter 333 can be provided with two forming cutters 333 that are corresponding setting according to the demand of wanted machine-shaping simultaneously, three are the setting that corresponding forming cutter 333 and four is corresponding forming cutter 333, be corresponding this forming cutter 333 and explain as example to arrange two in the present embodiment, this grip unit 332 can clamp this stock A rotation simultaneously, and coordinate these forming cutters 333 to advance, cutting, also or this grip unit 332 can to clamp this stock A motionless, and coordinating these forming cutters 333 to rotate advances, cutting, so that mold a brill afterbody 43 on this body of rod 41, and on this brill afterbody 43, form at least one chip removal flute 431 that spiral is offered that is on this body of rod 41, coordinate again this brill tail cutter 334 to carry out the processing processing of grinding for the ora terminalis 430 of this brill afterbody 43, in order to do making these brill afterbody 43 ora terminalis places be formed with a cutting edge 432, finally, in this thread forming step 34, carry out thread spreading operation for the circumferential surface of this body of rod 41, to mold multiple threads 44 (as shown in Figure 6), so complete the manufacture of this Self Drilling Screws 4.
By above-mentioned explanation, when learning that the present invention has following listed advantage and effect really:
1. fraction defective reduces
In this brill tail forming step 33, utilize the grip unit 332 of boring tail forming machine 331 can clamp this stock A rotation, the forming cutters 333 such as cooperation simultaneously advance, cutting, also or this grip unit 332 can to clamp this stock A motionless, and coordinate these forming cutters 333 rotations to advance, cutting, to mold this brill afterbody 43, last again through the grinding of this brill tail cutter 334, to mold at least one chip removal flute 431 and a cutting edge 432 etc. on this brill afterbody 43, be not by the clamping of fixture and to reverse processing mode as existing, utilize and reverse power size, and windup-degree is to depend on the moulding of chip removal flute of this brill tail region, therefore this brill afterbody 43 does not have processing deficiency, or processing excessively causes this stock A torsional deformation, even cause the facts of damaging to produce, really effectively reduce fraction defective.
2. the standardization of product-quality indicators
Still continuous aforementioned, by this corresponding two forming cutter 333, and the setting of this brill tail cutter 334, in order to do form this brill afterbody 43 on this body of rod 41 with incremental cutting way, and become at least one being formed in portion 43 on this body of rod 41, to be the chip removal flute 431 that spiral is offered at this brill tail, an and cutting edge 432, therefore the size of its moulding all can be controlled in exact value, and do not have not of uniform size, be different from existing to reverse processing mode, and the facts that has scale error after formed product is produced, in order to do making this each Self Drilling Screws 4 after moulding can reach normalization.
3. promote process velocity
Can directly cut for these body of rod 41 places, grind and mold this brill afterbody 43 by this brill tail forming machine 331, therefore be maintained the process velocity of certain accuracy in process, and can produce the finished product production capacity with yield with the processing procedure of always changing, not only efficiency promotes outside the molding manufacture procedure efficiency of this Self Drilling Screws 4, the shortening of more favourable activity duration.
Conclude aforementioned, Self Drilling Screws forming method of the present invention, it is mainly in this brill tail forming step, by the design of this brill tail forming machine, utilize gradual and orderly approach on this body of rod, to give turning and mold chip removal flute that a tool spiral offers and the brill afterbody of cutting edge, finally mold thread in the circumferential surface of this body of rod again; Therefore utilize forming method of the present invention really can make the quality of production have more precisely and normalization, to reduce outside fraction defective, and then reach the effect such as increase speed of production, reduce costs.
Above-described embodiment and accompanying drawing non-limiting product form of the present invention and style, suitable variation or modification that any person of an ordinary skill in the technical field does it, all should be considered as not departing from patent category of the present invention.
Claims (4)
1. a Self Drilling Screws forming method, is characterized in that, sequentially includes:
One material preparation step, it prepares the stock of a metal material;
One preliminary forming step, stock is formed respectively a body of rod by it, and be formed in the spiral shell head of this body of rod one end;
One bores tail forming step, it is prepared one and bores tail forming machine, and this brill tail forming machine has the grip unit of this stock of clamping, at least one forming cutter cutting for this body of rod, and the brill tail cutter that can grind for this body of rod, wherein, first this grip unit clamps this body of rod, this forming cutter cuts on this body of rod, bore afterbody and form one, simultaneously on this brill afterbody and form at least one chip removal flute that spiral is offered that is on this body of rod, finally coordinate again this brill tail knife needle to carry out grinding to the ora terminalis of this brill afterbody, this body of rod is positioned at this brill afterbody ora terminalis place and is formed with a cutting edge, and
One thread forming step, it carries out the operation of thread calendering forming for this body of rod.
2. Self Drilling Screws forming method as claimed in claim 1, is characterized in that: this grip unit clamps this stock and rotates, and coordinates this forming cutter to advance, cut and form.
3. Self Drilling Screws forming method as claimed in claim 1, is characterized in that: it is motionless that this grip unit clamps this stock, coordinates this forming cutter to rotate and advances, cuts, and on this body of rod, molds chip removal flute.
4. Self Drilling Screws forming method as claimed in claim 1, is characterized in that: this forming cutter has two, and is corresponding setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310079670.2A CN104043944A (en) | 2013-03-13 | 2013-03-13 | Drill tail thread forming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310079670.2A CN104043944A (en) | 2013-03-13 | 2013-03-13 | Drill tail thread forming method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104043944A true CN104043944A (en) | 2014-09-17 |
Family
ID=51497603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310079670.2A Pending CN104043944A (en) | 2013-03-13 | 2013-03-13 | Drill tail thread forming method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104043944A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106736309A (en) * | 2017-02-23 | 2017-05-31 | 河北顶创金属制品有限公司 | A kind of screw processing technology |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2302675A (en) * | 1938-09-08 | 1942-11-24 | Economy Screw Corp | Self-tapping screw |
| US3780389A (en) * | 1971-10-06 | 1973-12-25 | Elco Industries Inc | Method of manufacturing a self-drilling and self-tapping fastener |
| US4532663A (en) * | 1981-06-30 | 1985-08-06 | Illinois Tool Works Inc. | Method of manufacturing a drill screw |
| JPH03234331A (en) * | 1990-02-07 | 1991-10-18 | Nitto Seiko Co Ltd | Manufacture of drill screw and form rolling die |
| TW544356B (en) * | 2001-08-23 | 2003-08-01 | Rung-Ju Jau | Method for machining screw cutting edge of elongated cutting edge drill bit |
| CN101994741A (en) * | 2009-08-19 | 2011-03-30 | 赵颖庆 | Method for producing screw with spiral chip removal flute and finished product of screw |
-
2013
- 2013-03-13 CN CN201310079670.2A patent/CN104043944A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2302675A (en) * | 1938-09-08 | 1942-11-24 | Economy Screw Corp | Self-tapping screw |
| US3780389A (en) * | 1971-10-06 | 1973-12-25 | Elco Industries Inc | Method of manufacturing a self-drilling and self-tapping fastener |
| US4532663A (en) * | 1981-06-30 | 1985-08-06 | Illinois Tool Works Inc. | Method of manufacturing a drill screw |
| JPH03234331A (en) * | 1990-02-07 | 1991-10-18 | Nitto Seiko Co Ltd | Manufacture of drill screw and form rolling die |
| TW544356B (en) * | 2001-08-23 | 2003-08-01 | Rung-Ju Jau | Method for machining screw cutting edge of elongated cutting edge drill bit |
| CN101994741A (en) * | 2009-08-19 | 2011-03-30 | 赵颖庆 | Method for producing screw with spiral chip removal flute and finished product of screw |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106736309A (en) * | 2017-02-23 | 2017-05-31 | 河北顶创金属制品有限公司 | A kind of screw processing technology |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140917 |