CN204711022U - A kind of eccentric spinning draw structure - Google Patents
A kind of eccentric spinning draw structure Download PDFInfo
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- CN204711022U CN204711022U CN201520223917.8U CN201520223917U CN204711022U CN 204711022 U CN204711022 U CN 204711022U CN 201520223917 U CN201520223917 U CN 201520223917U CN 204711022 U CN204711022 U CN 204711022U
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- spherical groove
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Abstract
The utility model relates to a kind of eccentric spinning draw structure, comprise spinning block and bore mould, one end of described spinning block is provided with spherical groove, and the side being furnished with the end face of spherical groove is furnished with bore mould, described bore mould is furnished with the jack at through two ends, described spinning block rotates around the center line of jack, simultaneously the edge of spherical groove all the time with the justified margin of jack.The utility model apparatus structure is simple, and principle is ingenious, and processing technology is simple and quick, and the one end that can realize similar metal tube is any caliber size from its external diameter reducing.
Description
Technical field
The utility model relates to draw manufacture field, particularly relates to a kind of eccentric spinning draw structure.
Background technology
At present, all need one end of metal tube or two ends to carry out reducing in many applications of metal tube, the particularly headrest stay field of first automobile, substantially one end of all headrest stays all needs to carry out reducing, mostly existing necking down process is to adopt extrusion die, and directly axially carrying out extruding to the end of metal tube carrys out one-shot forming fore shaft, the reducing size of this technique and the thickness of metal tube have very large relation, when the thickness of metal pipe-wall is greater than 1.5mm, existing technique draw bore can only be reduced to 9.5mm from 14mm for external diameter is the pole of 14mm, the state of sealing completely cannot be reached.
In addition, existing axial compression draw technique easily produces external diameter outwardly at the root of the reducing part of metallic rod, affects quality and the outward appearance of product.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of eccentric spinning draw structure, and apparatus structure is simple, and principle is ingenious, and processing technology is simple and quick, and the one end that can realize similar metal tube is any caliber size from its external diameter reducing.
The utility model solves the technical scheme that its technical problem adopts: provide a kind of eccentric spinning draw structure, comprise spinning block and bore mould, one end of described spinning block is provided with spherical groove, and the side being furnished with the end face of spherical groove is furnished with bore mould, described bore mould is furnished with the jack at through two ends, described spinning block rotates around the center line of jack, simultaneously the edge of spherical groove all the time with the justified margin of jack.
Supplement as one of the present utility model, described bore mould is connected with external support by bearing.
Supplement as another kind of the present utility model, the bottom of described spherical groove has the chip-removal hole communicated with outside.
Corresponding use step is as follows:
A one end of metal tube is inserted in the jack of bore mould by (), one end of this metal tube needs one of the draw section to stretch out and keeps static in the outside of jack, the internal diameter 0.5mm larger than the external diameter of metal tube of jack;
B () spinning block rotates around the center line of metal tube, spinning block moves towards bore mould simultaneously, the inwall of spherical groove contacts with the end wall of metal tube all the time, to the extruding force that metal tube one is constant, until one end of metal tube is retracted to the size of regulation.
Carry out in process in step b, bore mould can carry out the rotation of 0.1-0.2mm.
The velocity of rotation of spinning block is that 1100-1300 per minute turns in stepb, and meanwhile, the feeding translational speed of spinning block is 8-12mm per second.
beneficial effect
The utility model relates to a kind of eccentric spinning draw structure, and apparatus structure is simple, and principle is ingenious, and processing technology is simple and quick, and the one end that can realize similar metal tube is any caliber size from its external diameter reducing; In addition, after using device of the present utility model and technique, the root of the choke of metal tube would not produce external diameter situation bigger than normal, and working (machining) efficiency is very high.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that device of the present utility model processes a station;
Fig. 2 is the schematic diagram that device of the present utility model processes another station;
Fig. 3 is the schematic diagram that device of the present utility model processes another station.
1, spinning block; 2, bore mould; 3, chip-removal hole; 4, spherical groove; 5, metal tube.
Detailed description of the invention
Below in conjunction with specific embodiment, set forth the utility model further.Should be understood that these embodiments are only not used in restriction scope of the present utility model for illustration of the utility model.In addition should be understood that those skilled in the art can make various changes or modifications the utility model, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the utility model instruction.
As shown in Figure 1, embodiment of the present utility model relates to a kind of eccentric spinning draw structure, comprise spinning block 1 and bore mould 2, one end of described spinning block 1 is provided with spherical groove 4, and the side being furnished with the end face of spherical groove 4 is furnished with bore mould 2, described bore mould 2 is furnished with the jack at through two ends, described spinning block 1 rotates around the center line of jack, simultaneously the edge of spherical groove 4 all the time with the justified margin of jack.
Bore mould 2 just supports metal tube 5, prevent it from moving radially, the axial restraint of metal tube 5 will by other clamping device, the clamping of metal tube 5 can adopt automation equipment to carry out, as cylinder clamping mechanism, also after clamping, baffle plate can be set at the other end of metal tube 5, prevent it from moving axially.
Supplement as one of the present utility model, described bore mould 2 is connected with external support by bearing, carry out in the process of the draw in one end of metal tube 5, one section near spinning block 1 can be subject to larger extruding force, although metal tube 5 belongs to stationary state, but or slight axial rotation can be produced, if bore mould 2 is fixed, then sliding friction will be produced between bore mould 2 and metal tube 5, this frictional force is often larger, the outer surface of metal tube 5 can be damaged, because the reducing process velocity of metal tube 5 is very fast, so at short notice, metal tube 5 can drive bore mould 2 to carry out the rotation of 0.1-0.2mm, rotating 0.1mm under normal circumstances can be more reasonable, a lot of time naked eyes be can't see, but effect is obvious.
In addition, supplement as of the present utility model, the bottom of described spherical groove 4 has the chip-removal hole 3 communicated with outside, because some metal material is softer, in the process of reducing, easily produce chip, in actual practical process, a vavuum pump can be connected at the other end of chip-removal hole 3, by the chip in spherical groove 4 or the timely sucking-off of foreign material, the cleannes of spherical groove 4 inner surface can be ensure that.
As first embodiment of the present utility model, as Figure 1-3, processing diameter is needed now to be the fulcrum bar of headrest of automobile of 14mm, one end of headrest stay is inserted in the jack of bore mould 2, one end of this golden headrest stay needs one of the draw section to stretch out and keeps static in the outside of jack, the internal diameter 0.5mm larger than the external diameter of headrest stay of jack;
Spinning block 1 rotates around the center line of fulcrum bar of headrest of automobile, the speed of rotating is 1100 turns per minute, spinning block 1 moves towards bore mould 2 simultaneously, the feeding translational speed of spinning block 1 is 8mm per second, the inwall of spherical groove 4 contacts with the end wall of fulcrum bar of headrest of automobile all the time, to the extruding force that fulcrum bar of headrest of automobile one is constant, until one end of fulcrum bar of headrest of automobile is retracted to the size of regulation, the size of this regulation can be any size of 0-14mm, be the headrest stay of 14mm for diameter, regardless of the size after reducing, spinning block 1 all need not be changed, determine the size after reducing by the amount of feeding of spinning block 1,
Certainly, if require that the size of reducing is less, the length that fulcrum bar of headrest of automobile stretches out outside bore mould 2 is longer.
As second embodiment of the present utility model, as Figure 1-3, processing diameter is needed now to be the fulcrum bar of headrest of automobile of 10mm, one end of headrest stay is inserted in the jack of bore mould 2, one end of this golden headrest stay needs one of the draw section to stretch out and keeps static in the outside of jack, the internal diameter 0.5mm larger than the external diameter of headrest stay of jack;
Spinning block 1 rotates around the center line of fulcrum bar of headrest of automobile, the speed of rotating is 1300 turns per minute, spinning block 1 moves towards bore mould 2 simultaneously, the feeding translational speed of spinning block 1 is 12mm per second, the inwall of spherical groove 4 contacts with the end wall of fulcrum bar of headrest of automobile all the time, to the extruding force that fulcrum bar of headrest of automobile one is constant, until one end of fulcrum bar of headrest of automobile is retracted to the size of regulation, the such headrest stay of general processing only needs the time of 6 seconds, comprises the time of clamping and blanking.
In addition, in the draw structure described in this patent, spinning block 1 can be arranged in an eccentric die holder, and this eccentric die holder is inner chamber bias, can be cylindrical outside it, the center superposition of this columniform center and metal tube 5.
Apparatus structure described in this patent is simple, and principle is ingenious, and processing technology is simple and quick, and the one end that can realize similar metal tube is any caliber size from its external diameter reducing; In addition, after using device of the present utility model and technique, the root of the choke of metal tube would not produce external diameter situation bigger than normal, and working (machining) efficiency is very high.
Claims (3)
1. an eccentric spinning draw structure, comprise spinning block (1) and bore mould (2), it is characterized in that, one end of described spinning block (1) is provided with spherical groove (4), and the side being furnished with the end face of spherical groove (4) is furnished with bore mould (2), described bore mould (2) is furnished with the jack at through two ends, described spinning block (1) rotates around the center line of jack, simultaneously the edge of spherical groove (4) all the time with the justified margin of jack.
2. eccentric spinning draw structure according to claim 1, is characterized in that: described bore mould (2) is connected with external support by bearing.
3. eccentric spinning draw structure according to claim 1, is characterized in that: the bottom of described spherical groove (4) has the chip-removal hole (3) communicated with outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520223917.8U CN204711022U (en) | 2015-04-14 | 2015-04-14 | A kind of eccentric spinning draw structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520223917.8U CN204711022U (en) | 2015-04-14 | 2015-04-14 | A kind of eccentric spinning draw structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204711022U true CN204711022U (en) | 2015-10-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520223917.8U Expired - Fee Related CN204711022U (en) | 2015-04-14 | 2015-04-14 | A kind of eccentric spinning draw structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN204711022U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104785651A (en) * | 2015-04-14 | 2015-07-22 | 宁波继峰汽车零部件股份有限公司 | Eccentric spinning contracted pipe structure and usage method thereof |
| CN111644480A (en) * | 2020-06-04 | 2020-09-11 | 临海市万宏机电配件厂 | Metal tube ball head processing die |
-
2015
- 2015-04-14 CN CN201520223917.8U patent/CN204711022U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104785651A (en) * | 2015-04-14 | 2015-07-22 | 宁波继峰汽车零部件股份有限公司 | Eccentric spinning contracted pipe structure and usage method thereof |
| CN111644480A (en) * | 2020-06-04 | 2020-09-11 | 临海市万宏机电配件厂 | Metal tube ball head processing die |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151021 Termination date: 20210414 |