CN108555045A - A kind of tube-drawing mold - Google Patents
A kind of tube-drawing mold Download PDFInfo
- Publication number
- CN108555045A CN108555045A CN201810443264.2A CN201810443264A CN108555045A CN 108555045 A CN108555045 A CN 108555045A CN 201810443264 A CN201810443264 A CN 201810443264A CN 108555045 A CN108555045 A CN 108555045A
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- CN
- China
- Prior art keywords
- die sleeve
- bearing
- tube
- interior
- drawing die
- 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
- 230000000694 effects Effects 0.000 claims abstract description 6
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 13
- 239000000047 product Substances 0.000 description 19
- 230000008569 process Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 238000005096 rolling process Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 241000233855 Orchidaceae Species 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels
- B21C3/02—Dies; Selection of material therefor; Cleaning thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
- B21C1/22—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Extraction Processes (AREA)
Abstract
The invention discloses a kind of tube-drawing molds, belong to drawing technique field, solves the technical issues of eccentric blank is easily broken when using drawing mould in the prior art, tubing drawing mould in the present invention, including drawing die sleeve and interior die sleeve, the interior die sleeve is installed on the inside of the drawing die sleeve, and the tube-drawing mold further includes bearing, the bearing is mounted between the interior die sleeve and the drawing die sleeve, so that the interior die sleeve can rotate under the effect of circumferential stress difference.
Description
【Technical field】
The present invention relates to drawing technique field more particularly to a kind of tube-drawing molds.
【Background technology】
Tube-drawing technique refers to that pipe semi-finished product blank material is drawn into certain size and cross sectional shape by drawing mould
Product, the draw-off gear used at present mostly uses greatly the design that die sleeve and mold are fixedly mounted, it is ensured that drawing mould is in drawing
It cannot rotate in the process, however during the drawing process using the drawing mould of such structure design, i.e., semi-products pass through mold
When, since pipe is there are wall thickness eccentric phenomena, and the position of mold is kept fixed constant, therefore pipe can only drag between mold
Dynamic operation easily leads to pipe fracture to increase the frictional force that pipe is subject to.In addition, can also be deposited by the finished product after mold
In the non-uniform phenomenon of stress distribution, it is not achieved Product Precision requirement, unstable quality, rejection rate is higher.
【Invention content】
A kind of drawing mould is provided technical problem to be solved by the present invention lies in overcome the deficiencies in the prior art, it can
Effectively tubing is reduced because eccentric there is a phenomenon where being broken, and improves the quality of product after drawing.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：
A kind of tube-drawing mold, including drawing die sleeve and interior die sleeve, the interior die sleeve are installed in the drawing die sleeve
Side, the tube-drawing mold further includes bearing, and the bearing is mounted between the interior die sleeve and the drawing die sleeve, so that
The interior die sleeve can rotate under the effect of circumferential stress difference.
Further, the peripheral side of the interior die sleeve is equipped with the fixed plate to be formed that extends radially outwardly, the drawing die sleeve
One end be equipped with end cap flange, be additionally provided with positioning step on the madial wall of the drawing die sleeve, the bearing includes first bearing
And second bearing, the first bearing are installed between the positioning step and the side of the fixed plate, the second bearing
It is installed between the other side of the fixed plate and the end cap flange.
Further, the first bearing and the second bearing are self-aligning thrust roller bearing.
Further, the interior die sleeve covers clearance fit with the drawing die.
Further, the tube-drawing mold further includes stretching-machine motherboard, and the stretching-machine motherboard is set with the drawing
On die sleeve, the medial surface of the stretching-machine motherboard is the conical surface with the drawing die sleeve lateral surface cone match, the conical surface
Radius is gradually reduced along the feeding direction of tubing.
Further, the axis of the axis of the drawing die sleeve, the axis of interior die sleeve and the bearing overlaps.
Beneficial effects of the present invention：
Tube-drawing mold in the present invention in use, if supplied materials pipe wall unevenness is even, is drawn in pipe
During stretching, because pipe wall thickness difference generate circumferential stress difference can drive in die sleeve around drawing die sleeve central axis revolve
Turn, rolling friction is become from sliding friction between interior die sleeve and pipe, is rubbed with reducing the axial direction that pipe is subject to during the drawing process
Power is wiped, pipe itself is made to be more uniformly stressed, effectively reduce pipe is broken because of eccentric, to reduce drawing production
Cost, while rolling friction can also promote the material at wall thickness to flow to the thin place of wall to improve so that the wall thickness of finished product is more uniform
The quality of product after drawing.
The peripheral side of interior die sleeve is equipped with the fixed plate to be formed that extends radially outwardly, and one end of drawing die sleeve is equipped with end cap method
Orchid is additionally provided with positioning step on the madial wall of drawing die sleeve, and bearing includes first bearing and second bearing, and first bearing is installed in
Between positioning step and the side of fixed plate, second bearing is installed between the other side of fixed plate and end cap flange.Such one
Come, by the cooperation of end cap flange and drawing die sleeve can realize the installation to first bearing and second bearing position, assembling with
It dismantles relatively simple, is replaced convenient for first bearing and the repair in second bearing later stage.
First bearing and second bearing are self-aligning thrust roller bearing.So design, can allow for interior die sleeve according to pipe
The wall thickness difference of base generates radial shake and realizes automatic aligning, with compensating coaxial degree error.
Interior die sleeve covers clearance fit with drawing die.So design can be avoided generating between interior die sleeve and drawing die sleeve and be rubbed
Wipe resistance, it is ensured that interior die sleeve can rotate under the action of circumferential stress difference, equal so as to the wall thickness that improves finished product
Even property.
Tube-drawing mold further includes stretching-machine motherboard, and stretching-machine motherboard suit drawing die is put on, stretching-machine motherboard it is interior
Side is the conical surface with drawing die sleeve lateral surface cone match, and the radius of the conical surface is gradually reduced along the feeding direction of tubing.Such as
This design, it can be ensured that be arranged concentrically between drawing die sleeve and stretching trolley, while being also avoided that in drawing process, stretching-machine is female
Plate is detached from drawing die sleeve, and last assembling in this way can also be convenient for the quick-replaceable of later stage drawing mould.
The axis of the axis of drawing die sleeve, the axis of interior die sleeve and bearing overlaps.So design, can ensure the wall of finished product
It is thick uniform, improve the quality of finished product.
These features and advantages of the present invention will the detailed exposure in following specific implementation mode, attached drawing.
【Description of the drawings】
Following further describes the present invention with reference to the drawings：
Fig. 1 is the structural schematic diagram of tubing drawing mould in the preferred embodiment of the present invention.
【Specific implementation mode】
The invention discloses drawing mould, including drawing die sleeve and interior die sleeve, the interior die sleeve is installed on the drawing die
Set inside, the tube-drawing mold further includes bearing, and the bearing is mounted between the interior die sleeve and the drawing die sleeve,
So that the interior die sleeve can rotate under the effect of circumferential stress difference.Drawing mould in use, if supplied materials pipe wall thickness
It is uneven, then during pipe is stretched, because pipe wall thickness difference generate circumferential stress difference can drive in die sleeve around
The central axis of drawing die sleeve rotates, and becomes rolling friction from sliding friction between interior die sleeve and pipe, is being drawn with reducing pipe
The axial friction being subject in the process is pulled out, pipe itself is made to be more uniformly stressed, effectively reduction pipe occurs disconnected because of eccentric
It splits, to reduce drawing production cost, while rolling friction can also promote the material at wall thickness to flow to the thin place of wall, so that finished product
Wall thickness it is more uniform, improve the quality of product after drawing.
The technical solution of the embodiment of the present invention is explained and illustrated with reference to the attached drawing of the embodiment of the present invention, but under
It is only the preferred embodiment of the present invention to state embodiment, and not all.Based on the implementation example in the implementation mode, people in the art
Member's obtained other embodiments without making creative work, belong to protection scope of the present invention.
As shown in Figure 1, the tube-drawing mold in the present embodiment, including stretching-machine motherboard 1, drawing die sleeve 2, interior die sleeve 3
And bearing, stretching-machine motherboard 1 are sleeved on drawing die sleeve 2, interior die sleeve 3 is mounted on 2 inside of drawing die sleeve, and bearing is mounted on internal model
Between set 3 and drawing die sleeve 2, so that interior die sleeve 3 can generate rotation under the effect of circumferential stress difference.
Specifically, the bearing in the present embodiment includes first bearing 4 and second bearing 5, the inner ring of first bearing 4 being capable of phase
It relatively rotates to the outer ring of first bearing 4, the inner ring of second bearing 5 can occur relatively with respect to the outer ring of second bearing 5
The peripheral side of rotation, interior die sleeve is equipped with the fixed plate 31 to be formed that extends radially outwardly, and the feed end of drawing die sleeve is equipped with end cap method
Orchid 6, end cap flange 6 is fixed by screws on drawing die sleeve 2, and positioning step 21 is additionally provided on the madial wall of drawing die sleeve, the
One bearing 4 is installed between positioning step 21 and fixed plate 31, i.e. the outer ring of first bearing 4 is fitted on positioning step 21, the
The inner ring of one bearing 4 is fitted in the side of fixed plate 31, and second bearing 5 is installed between fixed plate 31 and end cap flange 6, that is, holds
Lid flange 6 is fitted on the outer ring of second bearing 5, and the inner ring of second bearing 5 is fitted in the other side of fixed plate 31.Such one
Come, interior die sleeve 3 just can be made to relatively rotate with respect to drawing die sleeve 2, while passing through the cooperation of end cap flange 6 and drawing die sleeve 2
It can realize the installation positioning axially and radially to first bearing 4 and second bearing 5, assembly and disassembly are relatively simple, are convenient for
The repair in 5 later stage of first bearing 4 and second bearing is replaced.
When tube-drawing mold processing tubing in the present embodiment, it is additionally provided with stretching core bar in interior die sleeve, pipe is from stretching
Discharge is squeezed between core bar and interior Membrane cover 3 forms finished product.If supplied materials pipe wall unevenness is even, in the process that pipe is stretched
In, because pipe wall thickness difference generate circumferential stress difference can drive in die sleeve 3 around drawing die sleeve 2 central axis rotate, it is interior
Rolling friction is become from sliding friction between die sleeve 3 and pipe, to reduce the axial friction that pipe is subject to during the drawing process,
Pipe itself is set to be more uniformly stressed, effectively reduce pipe is broken because of eccentric, to reduce drawing production cost,
Rolling friction simultaneously can also promote the material at wall thickness to flow to the thin place of wall to improve drawing so that the wall thickness of finished product is more uniform
The quality of product afterwards；Finally, due to which interior die sleeve 3 can generate rotation under the action of circumferential stress difference, therefore avoid circumferential direction
Damage caused by the internal die sleeve 3 of stress difference, improves the service life of drawing mould.
First bearing 4 and second bearing 5 in the present embodiment are self-aligning thrust roller bearing.So design, Neng Gouyun
Perhaps interior die sleeve 3 generates radial shake according to the wall thickness difference of pipe and realizes that automatic aligning is further carried with compensating coaxial degree error
The high evenness of wall thickness of finished product.
It is understood that deep groove ball bearing or self-aligning ball bearing also can be used in those skilled in the art, as long as can realize
The bearing that interior die sleeve is rotated relative to drawing die sleeve is set to each fall in protection scope of the present invention, this will not be detailed here.
In order to be further ensured that the uniform wall thickness of finished product, the quality of finished product is improved.Drawing die sleeve in the present embodiment
Axis, the axis of interior die sleeve, the axis of first bearing 4 and second bearing 5 axis overlap.
In addition, in order to avoid generating frictional resistance between drawing die sleeve 2 when interior die sleeve 3 rotates, it is interior in the present embodiment
Die sleeve 3 and 2 clearance fit of drawing die sleeve.Thus, just can ensure that interior die sleeve 3 can rotate under the action of circumferential stress difference
Get up, so as to improve the evenness of wall thickness of finished product.
Finally, in order to ensure being arranged concentrically between drawing die sleeve 2 and stretching trolley, the stretching-machine motherboard in the present embodiment
Medial surface is the conical surface 11 with drawing die sleeve lateral surface cone match, the radius of the conical surface 11 along tubing feeding direction (this reality
Apply the direction that the feeding direction in example is right-to-left) it is gradually reduced.Thus, also be avoided that in drawing process, stretching-machine
Motherboard 1 is detached from drawing die sleeve 2, while assembling in this way, can also be convenient for the quick-replaceable of later stage drawing mould.Drawing die sleeve 2
Peripheral side is additionally provided with limited step, when the right end of limited step and stretching-machine motherboard 1 offsets, the left side of drawing die sleeve 2 and drawing
The left side for stretching machine motherboard 1 is concordant.
It is understood that in order to simplify the structure of tube-drawing mold, it can be not provided with stretching-machine motherboard structure, directly will
Drawing die sleeve is fixed on stretching-machine.
It should be noted that the tube-drawing mold in the present invention can be additionally used in the drawing molding of bar, can also reach
To the basic effect of the present embodiment, this will not be detailed here.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, is familiar with
The those skilled in the art should be understood that the present invention includes but not limited to attached drawing and interior described in specific implementation mode above
Hold.The modification of any function and structure principle without departing from the present invention is intended to be included in the range of claims.
Claims (6)
1. a kind of tube-drawing mold, including drawing die sleeve and interior die sleeve, the interior die sleeve is installed on the inside of the drawing die sleeve,
It is characterized in that, the tube-drawing mold further includes bearing, the bearing is mounted on the interior die sleeve and the drawing die sleeve
Between, so that the interior die sleeve can rotate under the effect of circumferential stress difference.
2. tube-drawing mold according to claim 1, which is characterized in that the peripheral side of the interior die sleeve be equipped with it is radial to
One end of the fixed plate extended to form outside, the drawing die sleeve is equipped with end cap flange, is also set on the madial wall of the drawing die sleeve
It includes first bearing and second bearing to have positioning step, the bearing, and the first bearing is installed in the positioning step and institute
Between the side for stating fixed plate, the second bearing is installed between the other side of the fixed plate and the end cap flange.
3. tube-drawing mold according to claim 2, which is characterized in that the first bearing and the second bearing are equal
For self-aligning thrust roller bearing.
4. tube-drawing mold according to claim 3, which is characterized in that the interior die sleeve covers gap with the drawing die
Cooperation.
5. tube-drawing mold according to claim 1, which is characterized in that the tube-drawing mold further includes stretching-machine
Motherboard, the stretching-machine motherboard are set with the drawing die and put on, and the medial surface of the stretching-machine motherboard is and the drawing die sleeve
The radius of the conical surface of lateral surface cone match, the conical surface is gradually reduced along the feeding direction of tubing.
6. tube-drawing mold according to claim 1, which is characterized in that the axis of the drawing die sleeve, interior die sleeve
The axis of axis and the bearing part overlaps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810443264.2A CN108555045A (en) | 2018-05-10 | 2018-05-10 | A kind of tube-drawing mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810443264.2A CN108555045A (en) | 2018-05-10 | 2018-05-10 | A kind of tube-drawing mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108555045A true CN108555045A (en) | 2018-09-21 |
Family
ID=63538421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810443264.2A Pending CN108555045A (en) | 2018-05-10 | 2018-05-10 | A kind of tube-drawing mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108555045A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112474848A (en) * | 2020-11-19 | 2021-03-12 | 浙江义腾特种钢管有限公司 | Seamless thin-walled tube drawing die for integrated circuit |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2928528A (en) * | 1954-06-02 | 1960-03-15 | Canada Steel Co | Wire-drawing die |
| SU590030A1 (en) * | 1972-01-25 | 1978-01-30 | Shapoval Viktor N | Wire drawing/rolling tool |
| CN1068760A (en) * | 1991-07-19 | 1993-02-10 | 山东工业大学 | A kind of processing unit (plant) of cold-drawn thread wire |
| JP2002018511A (en) * | 2000-07-04 | 2002-01-22 | Suzutoyo Seiko Kk | Drawing device |
| CN101020198A (en) * | 2007-03-23 | 2007-08-22 | 桂林漓佳金属有限责任公司 | Stretcher for producing copper alloy pipe for high precision petroleum pump |
| CN205519033U (en) * | 2016-04-14 | 2016-08-31 | 江阴市三恒机电科技有限公司 | Wire drawing machine rotating die box |
| CN106238483A (en) * | 2016-09-27 | 2016-12-21 | 梓兰特线（厦门）科技有限公司 | A kind of pressure wire drawing die cover |
| CN208390676U (en) * | 2018-05-10 | 2019-01-18 | 浙江海亮股份有限公司 | A kind of tube-drawing mold |
-
2018
- 2018-05-10 CN CN201810443264.2A patent/CN108555045A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2928528A (en) * | 1954-06-02 | 1960-03-15 | Canada Steel Co | Wire-drawing die |
| SU590030A1 (en) * | 1972-01-25 | 1978-01-30 | Shapoval Viktor N | Wire drawing/rolling tool |
| CN1068760A (en) * | 1991-07-19 | 1993-02-10 | 山东工业大学 | A kind of processing unit (plant) of cold-drawn thread wire |
| JP2002018511A (en) * | 2000-07-04 | 2002-01-22 | Suzutoyo Seiko Kk | Drawing device |
| CN101020198A (en) * | 2007-03-23 | 2007-08-22 | 桂林漓佳金属有限责任公司 | Stretcher for producing copper alloy pipe for high precision petroleum pump |
| CN205519033U (en) * | 2016-04-14 | 2016-08-31 | 江阴市三恒机电科技有限公司 | Wire drawing machine rotating die box |
| CN106238483A (en) * | 2016-09-27 | 2016-12-21 | 梓兰特线（厦门）科技有限公司 | A kind of pressure wire drawing die cover |
| CN208390676U (en) * | 2018-05-10 | 2019-01-18 | 浙江海亮股份有限公司 | A kind of tube-drawing mold |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112474848A (en) * | 2020-11-19 | 2021-03-12 | 浙江义腾特种钢管有限公司 | Seamless thin-walled tube drawing die for integrated circuit |
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