CN109909685A - A kind of manufacturing method of elbow screw - Google Patents
A kind of manufacturing method of elbow screw Download PDFInfo
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- CN109909685A CN109909685A CN201910067135.2A CN201910067135A CN109909685A CN 109909685 A CN109909685 A CN 109909685A CN 201910067135 A CN201910067135 A CN 201910067135A CN 109909685 A CN109909685 A CN 109909685A
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- screw
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- bar portion
- steel wire
- arc groove
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Abstract
The present invention discloses a kind of manufacturing method of elbow screw, is related to technical field of fastening comprising following steps, step S1: wire drawing；Step S2: cutting；Step S3: fluting opens up arc groove to steel wire section using cutter, arc groove close to steel wire section one end and be circumferentially arranged along steel wire section；Step S4: bending carries out bending close to one end of arc groove to steel wire section using bending machine, so that steel wire section is divided into straight-bar portion and bending part, straight-bar portion and bending part are intersected at arc groove, and bending part is bent relative to straight-bar portion towards arc groove；Step S5: folder tail；S6: thread rolling of step；Step S7: heat treatment；Step S8: plated film.The present invention carries out bending in screw manufacturing process, to carry out bending to finished product screw instead of the later period, not only reduces cost, the later period is also avoided to injure in bending process to the clamping of finished product screw.
Description
Technical field
The present invention relates to technical field of fastening, more particularly, to a kind of manufacturing method of elbow screw.
Background technique
Screw is a kind of common fastener, is widely used on mechanical, electric appliance and building.General material be metal or
Plastic cement, cylindrical, surface carves indent and convex ditch and is known as screw thread, utilizes the inclined-plane circular rotating of object and the physics of frictional force
And mathematical principle fasten implements parts by easy stages, thus to more than two objects are connected.
Elbow screw be by common technique after straight screw rod is made, then to bending on punching machine, such processing method
Speed is slow, and non-cutting time is long, and need to add punching apparatus, and manufacturing cost is high.
Summary of the invention
The object of the present invention is to provide a kind of manufacturing methods of elbow screw, and bending is carried out in screw manufacturing process, from
And the later period is replaced to carry out bending to finished product screw, cost is not only reduced, also avoids the later period in bending process to finished product screw
Clamping injury.
The purpose of the present invention is what is be achieved by the following technical programs:
A kind of manufacturing method of elbow screw comprising following steps, step S1: wire drawing adds steel wire by disk member wire drawing machine
Work is to obtain corresponding diameter；Step S2: the steel wire after wire drawing is cut into the steel wire section of preset length by cutting；Step S3: it opens
Slot opens up arc groove to steel wire section using cutter, arc groove close to steel wire section one end and be circumferentially arranged along steel wire section；Step
S4: bending carries out bending close to one end of arc groove to steel wire section using bending machine, so that steel wire section is divided into straight-bar portion and folding
Turn of bilge, straight-bar portion and bending part intersect at arc groove, and bending part is bent relative to straight-bar portion towards arc groove；Step S5:
Tail is pressed from both sides, straight-bar portion is processed far from one end of bending part using folder tail machine, to obtain the spiral shell tail of correspondingly-shaped；Step S6:
Thread rolling carries out thread rolling by surrounding of the thread rolling machine to straight-bar portion, to process the first screw thread in straight-bar portion；Step
S7: heat treatment carries out medium temperature quenching and lonneal to the screw of thread rolling of above-mentioned completion；Step S8: plated film, to completion
Screw after heat treatment carries out coating film treatment.
By adopting the above technical scheme, during processing elbow screw, wire drawing and cutting first are carried out to steel wire, thus
The identical steel wire section of several diameters, length is obtained, one end of steel wire section is then clamped, the other end of steel wire section is opened
Slot then carries out bending towards arc groove to obtain arc groove.Under the action of arc groove, in order to bending part and straight-bar portion
Intersection be located at arc groove, to realize the effect of positioning, to improve the precision of processing, then straight-bar portion is pressed from both sides
Tail, thread rolling, are then heat-treated screw, to obtain finished product screw.When being bent to steel wire section, the bending of steel wire section
The side at position is squeezed, and the other side is stretched, by the way that arc groove is arranged, so that the position being squeezed to steel wire section mentions
The position of deformation is supplied, consequently facilitating carrying out bending.When due to carrying out bending to screw in the prior art, need to clamp spiral shell
Nail, may damage the screw thread on screw, thus by the way that bending step is arranged between cutting and folder tail, with reduction pair
The influence of screw thread.
The present invention is further arranged to: in step s 4, the angle of arc groove is set as 90 ~ 150 degree.
By adopting the above technical scheme, in general, for screw rod in bending, the angle being squeezed is usually 180
Degree, and is squeezed active force and is gradually reduced from the center of arc groove to both ends, thus by the angle of arc groove be set as 90 to
150 degree, the bending of steel wire section is on the one hand adapted to, the both ends of another aspect arc groove are by lesser squeezing action power, with doubling
It is curved to play mobile buffering effect, and the angle by reducing arc groove, to guarantee the intensity of steel wire section.
The present invention is further arranged to: the angle between bending part and straight-bar portion is 120 ~ 150 degree, in step s 4, arc
The depth of shape slot is the 1/6 ~ 1/4 of straight-bar portion radius.
By adopting the above technical scheme, 120 ~ 150 degree are set by the angle between bending part and straight-bar portion, may be implemented to make
Locating effect is played when with the elbow screw, and in the steel wire section in bending, reduces steel wire section relative to arc groove one
The drawing force that side is subject to.The depth of arc groove is the 1/6 ~ 1/4 of straight-bar portion radius, is being guaranteed in the effect for opening up arc groove
Influence of the lower reduction to entire screw intensity.
The present invention is further arranged to: after completing step S2, being processed using the one end of heading machine to steel wire section
To obtain screw head, and in the process of step S3, arc groove is arranged close to screw head.
By adopting the above technical scheme, it first takes the lead before cutting and fluting, to make the screw that there is screw head, a side
Face can realize quickly positioning in bending by screw head, be on the other hand convenient for carrying out in mounting screw hand-held or cooperate corresponding
Tool is to drive screw to rotate.When taking the lead, active force is applied to steel wire section, to take the lead between fluting, to subtract
Few influence to arc groove.
The present invention is further arranged to: after work is taken the lead in completion, being drilled using drilling tool to screw head, in spiral shell
An installing port is obtained at head.
By adopting the above technical scheme, it is drilled by the way that drilling tool is arranged to screw head, so that corresponding tool is inserted into
In installing port, drives screw to be rotated, have the advantages that easy to operate.
The present invention is further arranged to: step S8 further includes that screw is put into antirust oil and soaks by S81: plated film
Bubble, when immersion a length of 2 ~ 2.5h；Step S82: isolation film is coated on bending part by packet isolation film；Step S83: secondary film coating,
Straight-bar portion is electroplated, the surface in straight-bar portion is made to be formed with wearing layer.
By adopting the above technical scheme, first the screw after heat treatment is put into antirust coat and is impregnated, to obtain the first antirust
Layer, which is coated on the surface of entire screw, then straight-bar portion is electroplated, so that straight-bar portion surface is formed with
Wearing layer, to make the straight-bar portion of the elbow screw have the advantages that antirust and wear-resisting, and bending part has the advantages that antirust
The present invention is further arranged to: step S8 further includes step S84: plated film three times removes isolation film, and screw is put into antirust
Impregnated in oily, when immersion a length of 1.5 ~ 2h.
By adopting the above technical scheme, it by the way that plated film three times is arranged, plays a protective role to wearing layer, and since bending part is logical
It often is exposed in air, to adhere to antirust oil again on the first antirust coat of bending part, to increase the antirust of bending part
Effect.
The present invention is further arranged to: step S6 further includes secondary thread rolling, after completing to the thread rolling in straight-bar portion, takes out spiral shell
Nail, the intersection of bending part Yu straight-bar portion is held on using fixture, carries out secondary thread rolling to bending part using thread rolling machine, and rolling over
The second screw thread is obtained on turn of bilge.
By adopting the above technical scheme, by thread rolling of setting, the first screw thread is obtained in straight-bar portion, it is secondary by being arranged
Thread rolling obtains the second screw thread on bending part, so that bending part and straight-bar portion can be carried out threaded connection.
The present invention is further arranged to: in step s 8, using zinc-plated processing.
By adopting the above technical scheme, by using zinc-plated processing, to form protective layer on the surface of screw, have resistance to
The advantages of mill, antirust.
In conclusion advantageous effects of the invention are as follows:
(1) by setting arc groove, the position of deformation is provided to the position that steel wire section is squeezed, is convenient for bending, and
Thus by the way that bending step is arranged between cutting and folder tail, to reduce the influence to screw thread；
(2) 90 to 150 degree are set by the angle of arc groove, the bending of steel wire section is on the one hand adapted to, on the other hand due to arc
The both ends of slot play mobile buffering effect by lesser squeezing action power, with doubling is curved, and by reducing arc groove
Angle, with the intensity of pretty good steel wire section.
Detailed description of the invention
Fig. 1 is the structure diagram of method shown in embodiment one；
Fig. 2 is the elbow screw obtained using method in embodiment one；
Fig. 3 is the structure diagram of method shown in embodiment two；
Fig. 4 is the elbow screw obtained using method in embodiment two.
Appended drawing reference: 1, arc groove；2, screw head；3, straight-bar portion；4, bending part；5, the first screw thread；6, the second screw thread；7, pacify
Fill mouth.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
Embodiment one, referring to Figures 1 and 2, a kind of manufacturing method of elbow screw include the following steps,
Step S1: wire drawing, by steel wire by the wire drawing of disk member machine to obtain corresponding diameter, the diameter can for 3.5mm ~
4.5mm。
Step S2: the steel wire after wire drawing is cut into steel wire section using cutting machine, and the length of steel wire section is identical, steel by cutting
The length of silk section is 10mm ~ 13mm.
Then it takes the lead to the steel wire section for completing cutting, i.e., one end of steel wire section is installed on to the corresponding position of heading machine
Place, then takes the lead to steel wire section, and to obtain screw head 2, the shape of screw head 2 can be arranged in round end shape, and for finished product
For elbow screw, screw head 2 and straight-bar portion 3 are coaxially disposed.
Steel wire section is not removed, is drilled using drilling tool to screw head 2 directly on heading machine, to obtain installing port
7, the installing port 7 can it is rounded setting and it is coaxial with screw head 2, and the depth of installing port 7 can more than or equal to screw head 2 depth
Degree, in order to which corresponding tool to be caught in installing port 7, so that the elbow screw be driven to rotate.
Step S3: fluting opens up arc groove 1 to steel wire section using cutter, and arc groove 1 is arranged close to screw head 2, arc groove 1
Circumferentially be arranged along steel wire section, the angle of arc groove 1 is set as 90 ~ 150 degree, the depth of arc groove 1 for 3 radius of straight-bar portion 1/6 ~
1/4, to adapt to the bending of steel wire section, and doubling is curved plays mobile buffering effect.
Step S4: bending, one end using fixture clamped wire section far from screw head 2, then using bending machine to steel wire section
The other end carry out bending, so that steel wire section is divided into straight-bar portion 3 and bending part 4, the angle between bending part 4 and straight-bar portion 3
Be 120 ~ 150 degree, straight-bar portion 3 and bending part 4 intersect at arc groove 1, and bending part 4 relative to straight-bar portion 3 towards arc groove 1
Bending, wherein bending part 4 and the length ratio in straight-bar portion 3 are 1:3.
Step S5: folder tail, using the intersection of fixture clamping bending part 4 and straight-bar portion 3, then using folder tail machine to straight-bar
Portion 3 is processed far from one end of bending part 4, to obtain the spiral shell tail of correspondingly-shaped.Spiral shell tail can be arranged in tip-like；
S6: thread rolling of step carries out thread rolling by surrounding of the thread rolling machine to straight-bar portion 3 after completing folder tail work, thus
The first screw thread 5 is processed in straight-bar portion 3；
Step S7: heat treatment is first washed and is dried to the screw of an above-mentioned thread rolling of completion, first carries out 400 ~ 450
DEG C medium temperature quenching, 40-55 minute a length of at that time, then 200 ~ 300 DEG C of lonneal of progress, 50-60 minutes a length of at that time.
Step S8: plated film comprising following small step,
S81: plated film of step, screw is put into antirust oil and is impregnated, when immersion a length of 2 ~ 2.5h.
Step S82: isolation film is coated on bending part 4 by packet isolation film, and wherein isolation film can be adhesive tape, thus right
Bending part 4 plays isolation effect.
Step S83: straight-bar portion 3 is electroplated in secondary film coating, so that the surface in straight-bar portion 3 is formed with wearing layer, then tears
Lower isolation film, to obtain wearing layer in straight-bar portion 3.
Step S84: screw is put into antirust oil and impregnates by plated film three times, when immersion a length of 1.5 ~ 2h, to make bending part
Antirust coat on 4 thickeies, and plays protecting effect to wearing layer.
Embodiment two, with embodiment one the difference is that, referring to Fig. 3 and Fig. 4,
A kind of manufacturing method of elbow screw, includes the following steps,
Step S1: wire drawing, by steel wire by the wire drawing of disk member machine to obtain corresponding diameter, the diameter can for 3.5mm ~
4.5mm。
Step S2: the steel wire after wire drawing is cut into steel wire section using cutting machine, and the length of steel wire section is identical, steel by cutting
The length of silk section is 10mm ~ 13mm.
Step S3: fluting opens up arc groove 1 to steel wire section using cutter, and arc groove 1 is arranged close to screw head 2, arc groove 1
Circumferentially be arranged along steel wire section, the angle of arc groove 1 is set as 90 ~ 150 degree, the depth of arc groove 1 for 3 radius of straight-bar portion 1/6 ~
1/4, to adapt to the bending of steel wire section, and doubling is curved plays mobile buffering effect.
Step S4: bending, one end using fixture clamped wire section far from screw head 2, then using bending machine to steel wire section
The other end carry out bending, so that steel wire section is divided into straight-bar portion 3 and bending part 4, the angle between bending part 4 and straight-bar portion 3
Be 120 ~ 150 degree, straight-bar portion 3 and bending part 4 intersect at arc groove 1, and bending part 4 relative to straight-bar portion 3 towards arc groove 1
Bending, wherein bending part 4 and the length ratio in straight-bar portion 3 are 1:3.
Step S5: folder tail, using the rubber intersection of fixture clamping bending part 4 and straight-bar portion 3, then using folder tail machine to straight
Bar portion 3 is processed far from one end of bending part 4, to obtain the spiral shell tail of correspondingly-shaped.Spiral shell tail can be arranged in tip-like；
Step S61: thread rolling, after completing folder tail work, using fixture clamping bending part 4 and straight-bar portion 3, intersection,
Thread rolling is carried out by surrounding of the thread rolling machine to straight-bar portion 3, to process the first screw thread 5 in straight-bar portion 3；
Step S62: secondary thread rolling inverts the screw, makes 4 face thread rolling cutter of bending part, then carries out to the surrounding of bending part 4
Thread rolling, to process the second screw thread 6 on bending part 4；
Step S7: heat treatment is first washed and is dried to the screw of above-mentioned completion thread rolling, first carries out 400 ~ 450 DEG C
Medium temperature quenching, it is 40-55 minutes a length of at that time, 200 ~ 300 DEG C of lonneal is then carried out, it is 50-60 minutes a length of at that time.
Step S8: zinc-plated.
The embodiment of present embodiment is presently preferred embodiments of the present invention, not limits protection of the invention according to this
Range, therefore: the equivalence changes that all structures under this invention, shape, principle are done, should all be covered by protection scope of the present invention it
It is interior.
Claims (9)
1. a kind of manufacturing method of elbow screw, which is characterized in that include the following steps,
Step S1: wire drawing machines steel wire to obtain corresponding diameter by the wire drawing of disk member；
Step S2: the steel wire after wire drawing is cut into the steel wire section of preset length by cutting；
Step S3: fluting, steel wire section is opened up arc groove (1) using cutter, arc groove (1) close to steel wire section one end and along steel
Silk section is circumferentially arranged；
Step S4: bending carries out bending close to one end of arc groove (1) to steel wire section using bending machine, thus by steel wire section point
For straight-bar portion (3) and bending part (4), straight-bar portion (3) and bending part (4) are intersected at arc groove (1), and bending part (4) is opposite
It is bent in straight-bar portion (3) towards arc groove (1)；
Step S5: folder tail is processed straight-bar portion (3) far from the one end of bending part (4) using folder tail machine, to obtain corresponding shape
The spiral shell tail of shape；
S6: thread rolling of step carries out thread rolling by surrounding of the thread rolling machine to straight-bar portion (3), to process on straight-bar portion (3)
First screw thread (5) out；
Step S7: heat treatment carries out medium temperature quenching and lonneal to the screw of thread rolling of above-mentioned completion；
Step S8: plated film carries out coating film treatment to the screw completed after being heat-treated.
2. a kind of manufacturing method of elbow screw according to claim 1, which is characterized in that in step s 4, arc groove
(1) angle is set as 90 ~ 150 degree.
3. a kind of manufacturing method of elbow screw according to claim 2, which is characterized in that bending part (4) and straight-bar portion
(3) angle between is 120 ~ 150 degree, and in step s 4, the depth of arc groove (1) is the 1/6 ~ 1/4 of straight-bar portion (3) radius.
4. a kind of manufacturing method of elbow screw according to claim 3, which is characterized in that after completing step S2,
It is taken the lead using the one end of heading machine to steel wire section to obtain screw head (2), and in the process of step S3, arc groove
(1) it is arranged close to screw head (2).
5. a kind of manufacturing method of elbow screw according to claim 4, which is characterized in that after work is taken the lead in completion,
It is drilled using drilling tool to screw head (2), to obtain an installing port (7) at screw head (2).
6. a kind of manufacturing method of elbow screw according to claim 1, which is characterized in that step S8 further includes,
S81: plated film of step, screw is put into antirust oil and is impregnated, when immersion a length of 2 ~ 2.5h；
Step S82: isolation film is coated on bending part (4) by packet isolation film；
Step S83: straight-bar portion (3) are electroplated in secondary film coating, and the surface in straight-bar portion (3) is made to be formed with wearing layer.
7. a kind of manufacturing method of elbow screw according to claim 6, which is characterized in that step S8 further includes step
S84: plated film three times removes isolation film, and screw is put into antirust oil and is impregnated, when immersion a length of 1.5 ~ 2h.
8. a kind of manufacturing method of elbow screw according to claim 1, which is characterized in that step S6 further includes secondary stranding
Silk takes out screw after completing to the thread rolling of straight-bar portion (3), utilizes the intersection of fixture clamping bending part (4) and straight-bar portion (3)
Place carries out secondary thread rolling to bending part (4) using thread rolling machine, and obtains the second screw thread (6) on bending part (4).
9. a kind of manufacturing method of elbow screw according to claim 8, which is characterized in that in step s 8, using plating
Zinc processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910067135.2A CN109909685B (en) | 2019-01-24 | 2019-01-24 | Manufacturing method of elbow screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910067135.2A CN109909685B (en) | 2019-01-24 | 2019-01-24 | Manufacturing method of elbow screw |
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| Publication Number | Publication Date |
|---|---|
| CN109909685A true CN109909685A (en) | 2019-06-21 |
| CN109909685B CN109909685B (en) | 2021-08-03 |
Family
ID=66960731
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910067135.2A Active CN109909685B (en) | 2019-01-24 | 2019-01-24 | Manufacturing method of elbow screw |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4932234A (en) * | 1988-05-14 | 1990-06-12 | Tokai Trw & Co., Ltd. | Method of forming tappet adjusting screws |
| CN103537878A (en) * | 2013-11-04 | 2014-01-29 | 宁波浩渤工贸有限公司 | Processing method for U-shaped double end bolt |
| CN104525830A (en) * | 2014-12-01 | 2015-04-22 | 温州科腾紧固件有限公司 | Elbow expansion bolt manufacturing process |
| CN108506304A (en) * | 2017-04-15 | 2018-09-07 | 裴志胜 | A kind of high strong pluck-resistant anchoring piece with bending slot |
| CN108526826A (en) * | 2018-04-28 | 2018-09-14 | 鹏驰五金制品有限公司 | A kind of processing technology of high-strength bolt |
| CN208014926U (en) * | 2018-03-12 | 2018-10-26 | 正泰电气股份有限公司 | A kind of angular transition connection conductor |
| CN108890223A (en) * | 2018-06-28 | 2018-11-27 | 浙江俊荣五金工业有限公司 | Locking double section silk screw production technologies |
-
2019
- 2019-01-24 CN CN201910067135.2A patent/CN109909685B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4932234A (en) * | 1988-05-14 | 1990-06-12 | Tokai Trw & Co., Ltd. | Method of forming tappet adjusting screws |
| CN103537878A (en) * | 2013-11-04 | 2014-01-29 | 宁波浩渤工贸有限公司 | Processing method for U-shaped double end bolt |
| CN104525830A (en) * | 2014-12-01 | 2015-04-22 | 温州科腾紧固件有限公司 | Elbow expansion bolt manufacturing process |
| CN108506304A (en) * | 2017-04-15 | 2018-09-07 | 裴志胜 | A kind of high strong pluck-resistant anchoring piece with bending slot |
| CN208014926U (en) * | 2018-03-12 | 2018-10-26 | 正泰电气股份有限公司 | A kind of angular transition connection conductor |
| CN108526826A (en) * | 2018-04-28 | 2018-09-14 | 鹏驰五金制品有限公司 | A kind of processing technology of high-strength bolt |
| CN108890223A (en) * | 2018-06-28 | 2018-11-27 | 浙江俊荣五金工业有限公司 | Locking double section silk screw production technologies |
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| CN109909685B (en) | 2021-08-03 |
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