CN1064267C - Thin-wall steel pipe javelin and its forming process and equipment - Google Patents
Thin-wall steel pipe javelin and its forming process and equipment Download PDFInfo
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- CN1064267C CN1064267C CN96109511A CN96109511A CN1064267C CN 1064267 C CN1064267 C CN 1064267C CN 96109511 A CN96109511 A CN 96109511A CN 96109511 A CN96109511 A CN 96109511A CN 1064267 C CN1064267 C CN 1064267C
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- javelin
- thin
- wall steel
- steel tube
- mould
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Abstract
The present invention relates to a thin-wall steel pipe javelin, a forming process and a forming device. The center section of the javelin is a circular pipe, transition sections towards both ends of the javelin are conical pipes, and the wall thickness of the javelin is from 0.3mm to 0.5mm. In the machining process, a workpiece rotates to carry out frictional heating, extrusion and simultaneous drawing with conical surface molds sheathed outside the workpiece, a set of conical surface molds are used for subsection machining, and the end is forged and formed. The steel pipe javelin machined by the process and the device has the advantages of smooth surfaces, uniform wall thickness and good use effect.
Description
The present invention relates to make javelin, moulding process and the equipment that raw material is produced with the seamless thin wall steel pipe.
Javelin of the prior art is generally alloy rifle head and adds rod, and external all-metal javelin is forged for casting and processed, the cost height, and wall unevenness when the sportsman uses or float or heavy, influences sports achievement.
The purpose of this invention is to provide the uniform thin-wall steel tube javelin of a kind of all-metal wall thickness, moulding process and former.
Purpose of the present invention realizes by following measure: the middle part of javelin is isometrical thin-wall steel tube structure, and the middle part is thin-walled circular cone steel-tube construction to the two ends transition, the wall thickness b=0.3-0.5mm of described javelin.
One section of javelin is the javelin of isometrical thin-wall steel tube, and its changeover portion to an end is a Taper Pipe, and its other end is a section, forms head of javelin.
A kind of moulding process of thin-wall steel tube javelin, the thin-wall steel tube two ends are stuck on the coaxial turntable of former, initiatively rotating disk and motor transmission can realize 1500-2800 rev/min rotation, passive rotating disk and another additional motor pass on from one to another kinetic energy and realize axial feed; the mould of suit is by the knife rest clamping of axial feed on the thin-wall steel tube; along with the rotation of processed thin-wall steel tube; inner chamber is the mould axial feed at the uniform velocity of the conical surface; with processed high speed rotational workpieces friction; produces bigger heat; the light-wall pipe of heating is subjected to the pressure of conical surface mould; gradually become the pipeline section with tapering; workpiece to be machined is subjected to the stretching of passive rotating disk and pulls out simultaneously; after above-mentioned operation is finished; select the identical waney complete mould segmental machining of tapering successively for use; the stage casing that makes thin-wall steel tube is isometrical pipe; the changeover portion to two ends is Taper Pipe; two ends are with imitative swage die (as Fig. 4) forging forming that the camber top is arranged; each wall thickness b=0.3-0.5mm of of the javelin after the moulding; process through quenching, be the javelin finished product.
The workpiece of being processed is a short tube, is one section after the processing and is isometrical pipe, and another section is a Taper Pipe, becomes head of javelin 8 through end forging and pressing and quenching.
Former main body described in the technology is that lathe or combined type rotate, push, pull out forging equipment.
Used former in a kind of thin-wall steel tube moulding process, at frame one end main motor and speed change gear are arranged, main motor transmission is rotating disk initiatively, the moving frame lower framework platform that is slidingly connected, and be subjected to pay the leading screw that the motor transmission does to stretch action and connect, with main motor mutually the leading screw of transmission connect knife rest, knife rest has laterally and guiding mechanism up and down, clamp mould on the knife rest, complete mould is the conical surface that inner surface and each section of javelin conical surface adapt.Segmentation adapted mould, the stretching and shifting momentum of the amount of feeding of knife rest and follow rest processes the uniform javelin of wall thickness that meets international weight, length, tapering requirement in accordance with regulations.
The thin-wall steel tube of using in the above-mentioned technology is generally the different tube diameters section bar of wall thickness 0.5mm, can process the steel pipe javelin of various diameters, tapering, varying length, the smooth free from flaw of product surface, conical surface transition is even, this processing method can improve yield rate, the production efficiency height, and the product result of use is good.
Narrate below in conjunction with accompanying drawing embodiment.
Fig. 1 is a former structural representation of the present invention.
Fig. 2 is the structural representation of steel pipe javelin.
Fig. 3 is the structural representation of steel pipe head of javelin.
Fig. 4 is a javelin end forge die structural representation.
With reference to Fig. 1, Fig. 2 and Fig. 4 is one embodiment of the present of invention, and this thin-wall steel tube javelin is men's javelin throw, and the middle part is φ 30mm, and two awl bars are respectively 1.4 meters and 1.1 meters, 2.7 meters of total lengths.The middle part of javelin is isometrical thin-wall steel tube structure, and the middle part is thin-walled circular cone steel-tube construction to the two ends transition, and the thickness b of described javelin different piece is between 0.3-0.5mm.
The moulding process of above-mentioned thin-wall steel tube javelin, the thin-wall steel tube two ends of φ 30mm are stuck on the coaxial turntable, initiatively rotating disk 5 can be realized 2800 rev/mins rotation with the motor transmission, passive rotating disk links to each other with another additional motor can realize axial feed; the mould of suit is by the knife rest clamping that can axially reach length feed on the thin-wall steel tube; along with the rotation of processed thin-wall steel tube; inner chamber is the mould axial feed at the uniform velocity of the conical surface; with processed high speed rotational workpieces friction; produces bigger heat; the light-wall pipe of heating is subjected to the pressure of conical surface mould; gradually become the pipeline section with tapering, workpiece to be machined 4 is subjected to the stretching of passive rotating disk and pulls out simultaneously, and after above-mentioned operation is finished; select the identical complete mould segmental machining of tapering successively for use; the stage casing that makes thin-wall steel tube is isometrical pipe, the changeover portion to two ends is Taper Pipe, and two ends are with imitative swage die 9 (as Fig. 4) forging forming that has camber to push up; each wall thickness b=0.3-0.5mm of of the javelin after the moulding promptly meets international standard.Through the processing of quenching, be the javelin finished product again.
Former main body described in the technology is that combined type rotates, pushes, pulls out forging equipment.
Used former in the above-mentioned thin-wall steel tube moulding process, at frame one end main motor and speed change gear are arranged, main motor transmission is rotating disk (1) initiatively, moving frame (12) the lower framework platform that is slidingly connected, and be subjected to pay the leading screw (6) that the motor transmission does to stretch action and connect, with main motor mutually the leading screw of transmission (11) connect knife rest (2), knife rest has laterally and guiding mechanism up and down, clamp mould (3) on the knife rest (2), complete mould is the conical surface that inner surface and each section of javelin conical surface adapt.Segmentation adapted mould, the stretching and shifting momentum of the amount of feeding of knife rest and follow rest processes the uniform javelin of wall thickness that meets international weight, length, tapering requirement in accordance with regulations.The steel pipe javelin that produces 7 be φ 30 standard men's javelin throws.
Claims (6)
1, a kind of thin-wall steel tube javelin, the middle part that it is characterized in that javelin (7) are isometrical thin-wall steel tube structure, and the middle part is thin-walled circular cone steel-tube construction to the two ends transition, the wall thickness b=0.3-0.5mm of described javelin.
2, javelin according to claim 1 is characterized in that its one section is isometrical thin-wall steel tube, and its changeover portion to an end is a Taper Pipe, and its other end is a section, forms head of javelin (8).
3, a kind of moulding process of thin-wall steel tube javelin, it is characterized in that the thin-wall steel tube two ends are stuck on the coaxial turntable of former, initiatively rotating disk and motor transmission can realize 1500-2800 rev/min rotation, passive rotating disk and another additional motor pass on from one to another kinetic energy and realize axial feed; the mould of suit is by the knife rest clamping of axial feed on the thin-wall steel tube; along with the rotation of processed thin-wall steel tube; inner chamber is the mould axial feed at the uniform velocity of the conical surface; with processed high speed rotational workpieces friction; produces bigger heat; the light-wall pipe of heating is subjected to the pressure of conical surface mould; gradually become the pipeline section with tapering; workpiece to be machined is subjected to the stretching of passive rotating disk and pulls out simultaneously; after above-mentioned operation is finished; select the identical not isometrical complete mould segmental machining of tapering successively for use; the stage casing that makes thin-wall steel tube is isometrical pipe; the changeover portion to two ends is Taper Pipe; two ends are with the imitative swage die forging forming that the camber top is arranged; each wall thickness b=0.3-0.5mm of of the javelin after the moulding; process through quenching, be the javelin finished product.
4, moulding process according to claim 3 is characterized in that the workpiece of being processed is a short tube, processes back one section and is isometrical pipe, and another section is a Taper Pipe, becomes the head of javelin product through end forging and pressing and quenching.
5,, it is characterized in that described former main body is that lathe or combined type rotate, push, pull out forging equipment according to claim 3 or 4 described moulding process.
6, used former in a kind of thin-wall steel tube moulding process, it is characterized in that main motor and speed change gear being arranged at frame one end, main motor transmission is rotating disk (1) initiatively, moving frame (12) the lower framework platform that is slidingly connected, and be subjected to pay the leading screw (6) that the motor transmission does to stretch action and connect, with main motor mutually the leading screw of transmission (11) connect knife rest (2), knife rest has laterally and guiding mechanism up and down, clamp mould (3) on the knife rest (2), complete mould is the conical surface that inner surface and each section of javelin conical surface adapt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96109511A CN1064267C (en) | 1996-08-22 | 1996-08-22 | Thin-wall steel pipe javelin and its forming process and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96109511A CN1064267C (en) | 1996-08-22 | 1996-08-22 | Thin-wall steel pipe javelin and its forming process and equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1151915A CN1151915A (en) | 1997-06-18 |
| CN1064267C true CN1064267C (en) | 2001-04-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96109511A Expired - Fee Related CN1064267C (en) | 1996-08-22 | 1996-08-22 | Thin-wall steel pipe javelin and its forming process and equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1064267C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101618583B (en) * | 2009-06-11 | 2011-07-20 | 常熟市尚湖镇高科科技设备厂 | Remaining needle sleeve head forming machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4333643A (en) * | 1980-02-19 | 1982-06-08 | Victor Saffire | Javelin |
| CN2051520U (en) * | 1989-05-23 | 1990-01-24 | 唐冰丹 | Safety dart for teaching and training |
| CN1103825A (en) * | 1993-12-14 | 1995-06-21 | 孙复兴 | Process for mfg. metallic javelin |
| CN2216716Y (en) * | 1995-02-25 | 1996-01-03 | 赵沛 | Closing in forming apparatus for lead sleeve of cable |
-
1996
- 1996-08-22 CN CN96109511A patent/CN1064267C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4333643A (en) * | 1980-02-19 | 1982-06-08 | Victor Saffire | Javelin |
| CN2051520U (en) * | 1989-05-23 | 1990-01-24 | 唐冰丹 | Safety dart for teaching and training |
| CN1103825A (en) * | 1993-12-14 | 1995-06-21 | 孙复兴 | Process for mfg. metallic javelin |
| CN2216716Y (en) * | 1995-02-25 | 1996-01-03 | 赵沛 | Closing in forming apparatus for lead sleeve of cable |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1151915A (en) | 1997-06-18 |
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