CN113020507A - Thread rolling forming process for spiral spike - Google Patents
Thread rolling forming process for spiral spike Download PDFInfo
- Publication number
- CN113020507A CN113020507A CN202110375159.1A CN202110375159A CN113020507A CN 113020507 A CN113020507 A CN 113020507A CN 202110375159 A CN202110375159 A CN 202110375159A CN 113020507 A CN113020507 A CN 113020507A
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- CN
- China
- Prior art keywords
- thread rolling
- heating
- screw spike
- screw
- spike
- 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
- 238000005096 rolling process Methods 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000010438 heat treatment Methods 0.000 claims abstract description 52
- 238000012163 sequencing technique Methods 0.000 claims abstract description 5
- 230000006698 induction Effects 0.000 claims description 37
- 230000005540 biological transmission Effects 0.000 claims description 19
- 230000000694 effects Effects 0.000 description 9
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H3/00—Making helical bodies or bodies having parts of helical shape
- B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling
- B21H3/06—Making by means of profiled members other than rolls, e.g. reciprocating flat dies or jaws, moved longitudinally or curvilinearly with respect to each other
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H9/00—Feeding arrangements for rolling machines or apparatus manufacturing articles dealt with in this subclass
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B9/00—Fastening rails on sleepers, or the like
- E01B9/02—Fastening rails, tie-plates, or chairs directly on sleepers or foundations; Means therefor
- E01B9/04—Fastening on wooden or concrete sleepers or on masonry without clamp members
- E01B9/06—Railways spikes
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2201/00—Fastening or restraining methods
- E01B2201/04—Fastening or restraining methods by bolting, nailing or the like
Abstract
The invention discloses a screw spike thread rolling forming process, which comprises the following steps: 1) the screw spikes to be threaded are sequenced through a sequencing mechanism; 2) heating the thread rolling part of the screw spike after the sequence; 3) and feeding the heated screw spike into a thread rolling mechanism for thread rolling. The thread rolling forming process of the screw spike can carry out thread rolling forming on the screw spike on the basis of the existing thread rolling machine.
Description
Technical Field
The invention relates to a spiral spike forming process, in particular to a spiral spike thread rolling forming process.
Background
The screw spike is a special bolt for railway fasteners, and comprises multiple specifications and models mainly including a screw spike S1, a screw spike S2 and a screw spike S3. The spiral spike S1 is applied to the V-shaped spring strip of the ballast track fastener of the high-speed railway, the spiral spike S2 and the spiral spike S3 are applied to the WJ-8 type of the ballastless track fastener of the high-speed railway, and the spiral spike S8926 is an important product component of the high-speed railway fastener in China.
Screw way nail class product head is hexagonal head, and pole portion diameter is 24mm, and the profile of tooth is pitch 12.5 mm's non-standard screw thread, and its material is alloy steel, has the product strength grade requirement of at least 8.8 grades, and current thread rolling machine includes: the automatic thread rolling machine comprises a sorting mechanism, a transmission mechanism and a thread rolling mechanism, wherein the sorting mechanism is used for sorting disordered workpieces into ordered arrangement and arranging the ordered workpieces on the transmission mechanism for ordered transmission, and finally the sorted workpieces are rolled by the thread rolling mechanism one by one, and the screw spike has poor direct thread rolling effect and low thread rolling speed by using the existing thread rolling process due to large tooth form deformation.
Disclosure of Invention
The invention aims to provide a screw spike thread rolling forming process, which can carry out thread rolling forming on a screw spike on the basis of an existing thread rolling machine, and improves the forming effect and efficiency.
In order to achieve the purpose, the invention provides a spiral spike thread rolling forming process, which comprises the following steps:
1) the screw spikes to be threaded are sequenced through a sequencing mechanism;
2) heating the thread rolling part of the screw spike after the sequence;
3) and feeding the heated screw spike into a thread rolling mechanism for thread rolling.
Preferably, in the step 2), the thread rolling part of the screw spike is heated to 500-.
Preferably, in the step 2), the heating of the thread rolling part of the screw spike to the set temperature lasts for 3-10 s.
Preferably, in the step 3), after the thread rolling part of the screw spike close to the thread rolling mechanism is heated, the thread is fed into the thread rolling mechanism within 10s to complete thread rolling.
Preferably, the heating in step 2) is performed by induction heating.
Preferably, the heating in step 2) is performed by induction heating, and the heating device comprises: a lower template and an upper template; the lower template is arranged on the transmission mechanism, the upper template is arranged above the transmission mechanism and can move up and down, a plurality of heating grooves are arranged in the transmission direction of the transmission mechanism along the upper edge of the lower template, each heating groove is positioned in the lower template, a lower induction arc is embedded in the outer side of each heating groove, positioning grooves corresponding to the heating grooves are formed in the lower surface of the upper template, each positioning groove is positioned in the upper template, an upper induction arc is embedded in the outer side of each positioning groove, and the lower induction arc and the upper induction arc are connected to form an induction coil after the lower template and the upper template are closed.
Preferably, in step 2), 1-5 spiral spikes to be threaded can be accommodated in each heating groove.
Preferably, the upper template is connected with a telescopic cylinder.
Preferably, the upper templates are provided with 2-5 and have the same structure.
Preferably, the induction coil formed after the lower induction arc and the upper induction arc are closed is in a spiral shape.
According to the technical scheme, the thread rolling forming process for the spiral spike can carry out thread rolling forming on the spiral spike on the basis of the existing thread rolling machine, and the forming effect and efficiency are improved.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural view of a preferred embodiment of a heating apparatus.
Description of the reference numerals
1 conveying mechanism and 2 lower die plate
3 upper template 4 telescopic cylinder
5 induction arc on spiral spike 6 to be threaded
7 lower induction arc
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
In the present invention, unless otherwise specified, directional words included in terms such as "upper, lower, left, right, front, rear, inner, and outer" and the like merely represent the directions of the terms in a normal use state or are colloquially known by those skilled in the art, and should not be construed as limiting the terms.
The invention provides a screw spike thread rolling forming process, which comprises the following steps:
1) the screw spikes 5 to be threaded are sequenced by a sequencing mechanism;
2) heating the thread rolling part of the screw spike after the sequence;
3) and feeding the heated screw spike into a thread rolling mechanism for thread rolling.
Through the implementation of the technical scheme, the heating process is added in the existing thread rolling process, the heating process is added after the sequencing mechanism, and then the heated spiral spike is sent into the thread rolling mechanism for thread rolling, so that the problem that the spiral spike is difficult to thread due to large tooth-shaped deformation is solved, and the forming effect and efficiency are improved.
In this embodiment, in order to further increase the thread rolling effect, it is preferable that the thread rolling portion of the screw spike is heated to 500-.
In this embodiment, in order to further increase the thread rolling effect, it is preferable that the thread rolling portion of the screw spike is heated to the set temperature for 3 to 10 seconds in step 2). By the method, the thread rolling part of the screw spike is heated more uniformly, and the thread rolling effect is improved.
In this embodiment, preferably, in step 3), after the thread rolling part of the screw spike close to the thread rolling mechanism is heated, the thread rolling mechanism is fed within 10s to complete thread rolling. By the method, the problem that the thread rolling effect is influenced after the thread rolling part of the screw spike is cooled due to overlong delay time can be avoided.
In this embodiment, in order to further realize rapid heating and improve production efficiency, it is preferable that the heating is performed by an induction heating method in step 2).
In this embodiment, referring to fig. 1, in order to further provide a specific heating structure of the induction heating method, it is preferable that the heating by the induction heating method in step 2) is applied to a heating device including: a lower template 2 and an upper template 3; the lower template 2 is arranged on the transmission mechanism 1, the upper template 3 is arranged above the transmission mechanism 1 and can move up and down, a plurality of heating grooves are arranged in the transmission direction of the transmission mechanism 1 along the upper edge of the lower template 2, each heating groove is positioned in the lower template 2, a lower induction arc 7 is embedded in the outer side of each heating groove, positioning grooves corresponding to the heating grooves are formed in the lower surface of the upper template 3, each positioning groove is positioned in the upper template 3, an upper induction arc 6 is embedded in the outer side of each positioning groove and is provided, and after the lower template 2 and the upper template 3 are closed, the lower induction arc 7 and the upper induction arc 6 are connected to form an induction coil. Through the arrangement, the spiral spike can be heated in the transmission process, when the spiral spike is subjected to thread rolling, the transmission mechanism 1 stops transmission, the lower die plate 2 descends to enable the induction coil to integrally form a passage, the thread rolling part of the spiral spike 5 to be subjected to thread rolling in the induction coil is subjected to induction heating, after the heating is completed, the upper die plate 3 moves upwards, the transmission mechanism 1 continues to transmit, and the heated spiral spike is sent to the position of the thread rolling mechanism for thread rolling.
In this embodiment, since the thread rolling operation time period and the heating time period are long, in order to improve the thread rolling efficiency, it is preferable that 1 to 5 spiral spikes 5 to be rolled can be accommodated in each of the heating grooves in step 2). The thread rolling efficiency can be improved by heating the thread rolling parts of 1-5 to-be-rolled spiral spikes 5 at one time and then rolling the five spiral spikes one by one.
In this embodiment, preferably, a telescopic cylinder 4 is connected to the upper die plate 3, and at least 2 ejection cylinders are disposed in each heating groove, and the ejection cylinders are distributed along the length direction of each screw spike. The upper die plate 3 can move up and down through the telescopic cylinder 4, the heated spiral spike 5 to be threaded can be conveniently ejected out of the heating groove through the ejection cylinder, and thread rolling operation is facilitated.
In this embodiment, in order to further improve the heating efficiency, it is preferable that the upper mold plate 3 is provided with 2 to 5 and has the same structure. Because the heating time is longer for the thread rolling time, through setting up a plurality of cope match-plates 3, every cope match-plate pattern 3's the same homoenergetic cooperation lower bolster 2 carries out induction heating to the screw, can play the effect of preheating after heating later screw spike, improves heating efficiency.
In this embodiment, in order to further improve the heating efficiency, it is preferable that the induction coil formed after the lower induction arc 7 and the upper induction arc 6 are closed has a spiral shape.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (10)
1. The screw spike thread rolling forming process is characterized by comprising the following steps:
1) the screw spikes (5) to be threaded are sequenced through a sequencing mechanism;
2) heating the thread rolling part of the screw spike after the sequence;
3) and feeding the heated screw spike into a thread rolling mechanism for thread rolling.
2. The process for forming a screw spike thread rolling device according to claim 1, wherein in the step 2), the thread rolling portion of the screw spike is heated to 500-800 ℃.
3. The process for forming the screw spike according to claim 2, wherein in the step 2), the thread rolling portion of the screw spike is heated to the set temperature for 3 to 10 seconds.
4. The process for forming the screw spike according to claim 3, wherein in the step 3), the thread is formed by feeding the thread into the thread rolling mechanism within 10s after the thread rolling part of the screw spike close to the thread rolling mechanism is heated.
5. The screw spike thread rolling forming process according to any one of claims 1 to 4 wherein heating is performed in step 2) by induction heating.
6. The screw spike thread rolling forming process according to claim 5, wherein the heating in step 2) is performed by induction heating using a heating device comprising: a lower template (2) and an upper template (3);
lower bolster (2) set up on transmission device (1), cope match-plate pattern (3) set up in the top of transmission device (1) can reciprocate, follow on lower bolster (2) arrange on the transmission direction of transmission device (1) and be provided with a plurality of heating tanks, be located every in lower bolster (2) the outside of heating tank all imbeds and is provided with down induction arc (7), the lower surface of cope match-plate pattern (3) be formed with the constant head tank that the heating tank corresponds, be located every in cope match-plate pattern (3) the outside of constant head tank all imbeds and is provided with induction arc (6), lower bolster (2) and cope match-plate pattern (3) closed back, lower induction arc (7) and last induction arc (6) are connected and are formed the induction coil.
7. The process for forming the screw spike thread rolling according to claim 6, wherein 1 to 5 screw spikes (5) to be rolled can be accommodated in each heating groove in the step 2).
8. The forming process of the screw spike thread rolling according to claim 6, wherein the upper template (3) is connected with a telescopic cylinder (4).
9. The screw spike thread rolling forming process according to claim 8, wherein 2 to 5 upper templates (3) are provided and have the same structure.
10. The screw spike thread rolling forming process according to claim 5, wherein the induction coil formed after the lower induction arc (7) and the upper induction arc (6) are closed is in a spiral shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110375159.1A CN113020507A (en) | 2021-04-08 | 2021-04-08 | Thread rolling forming process for spiral spike |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110375159.1A CN113020507A (en) | 2021-04-08 | 2021-04-08 | Thread rolling forming process for spiral spike |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113020507A true CN113020507A (en) | 2021-06-25 |
Family
ID=76454096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110375159.1A Pending CN113020507A (en) | 2021-04-08 | 2021-04-08 | Thread rolling forming process for spiral spike |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113020507A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB639061A (en) * | 1946-09-03 | 1950-06-21 | Leo William Bedker | Method and apparatus for forming screw threads |
| JP2003025037A (en) * | 2001-07-11 | 2003-01-28 | Aoyama Seisakusho Co Ltd | Manufacturing method of screw component of excellent straightness, and thread rolling die |
| CN201201024Y (en) * | 2007-11-27 | 2009-03-04 | 海盐永固工模具有限责任公司 | Inductive heating type special type machine for rolling screw thread |
| CN202377453U (en) * | 2011-12-08 | 2012-08-15 | 浙江七丰五金标准件有限公司 | Heating and transmitting device for spike thread rolling machine |
| CN206763826U (en) * | 2017-05-10 | 2017-12-19 | 中铁隆昌铁路器材有限公司 | High ferro switch tie king-bolt throwing mould |
| CN110340263A (en) * | 2019-08-14 | 2019-10-18 | 中原利达铁路轨道技术发展有限公司 | A kind of railway spike Automatic Production System |
-
2021
- 2021-04-08 CN CN202110375159.1A patent/CN113020507A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB639061A (en) * | 1946-09-03 | 1950-06-21 | Leo William Bedker | Method and apparatus for forming screw threads |
| JP2003025037A (en) * | 2001-07-11 | 2003-01-28 | Aoyama Seisakusho Co Ltd | Manufacturing method of screw component of excellent straightness, and thread rolling die |
| CN201201024Y (en) * | 2007-11-27 | 2009-03-04 | 海盐永固工模具有限责任公司 | Inductive heating type special type machine for rolling screw thread |
| CN202377453U (en) * | 2011-12-08 | 2012-08-15 | 浙江七丰五金标准件有限公司 | Heating and transmitting device for spike thread rolling machine |
| CN206763826U (en) * | 2017-05-10 | 2017-12-19 | 中铁隆昌铁路器材有限公司 | High ferro switch tie king-bolt throwing mould |
| CN110340263A (en) * | 2019-08-14 | 2019-10-18 | 中原利达铁路轨道技术发展有限公司 | A kind of railway spike Automatic Production System |
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Application publication date: 20210625 |
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| RJ01 | Rejection of invention patent application after publication |