CA1147293A - Device for drawing wire, rod, pipe or the like - Google Patents
Device for drawing wire, rod, pipe or the likeInfo
- Publication number
- CA1147293A CA1147293A CA000346736A CA346736A CA1147293A CA 1147293 A CA1147293 A CA 1147293A CA 000346736 A CA000346736 A CA 000346736A CA 346736 A CA346736 A CA 346736A CA 1147293 A CA1147293 A CA 1147293A
- Authority
- CA
- Canada
- Prior art keywords
- duct
- lubricating
- pipe
- rod
- lubricating duct
- 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.)
- Expired
Links
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
- B21C9/00—Cooling, heating or lubricating drawing material
-
- 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
- B21C3/12—Die holders; Rotating dies
- B21C3/14—Die holders combined with devices for guiding the drawing material or combined with devices for cooling heating, or lubricating
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Extraction Processes (AREA)
- Electric Cable Installation (AREA)
Abstract
ABSTRACT
A device is disclosed for drawing wire, rod, pipe, or the like under hydrodynamic pressure. The device includes a lubricating duct, pre-ceding a drawing duct, in which the lubricant pressure builds up. The lubricating duct tapers conically towards the drawing duct. The nozzle-shaped drawing duct and the lubricating duct are each arranged in a separate element, the walls of the lubricating duct being at an angle of between 2 and 10° to the axis thereof.
A device is disclosed for drawing wire, rod, pipe, or the like under hydrodynamic pressure. The device includes a lubricating duct, pre-ceding a drawing duct, in which the lubricant pressure builds up. The lubricating duct tapers conically towards the drawing duct. The nozzle-shaped drawing duct and the lubricating duct are each arranged in a separate element, the walls of the lubricating duct being at an angle of between 2 and 10° to the axis thereof.
Description
In wire-drawing technology, increasing use has been made in recent years of pressure lubrication. This is based upon a variety of principles, the best-known of which are:
a) producing the pressure by means of external pumps;
b) producing the pressure by means of a lubricating duct in which the pressure builds up as a function of the length and diameter of the duct in relation to the diameter of the wire, rod or pipe to be drawn;
c) suitably shaped double or multiple drawing dies.
When drawing is carried out using hydrodynamic lubrication, it is known to use a conical lubricating duct, to which end the said duct is arranged in the drawing-tool and precedes the deformation zone in the draw-ing die. In this case, the lubricating duct and deformation zone have conical walls which merge smoothly into each other and which are at the same angle to the axis of the duct. One-piece drawing tools of this kind are described in United States Patents 2,343,118 and 3,763,680.
It is the purpose of the present invention to improve these known drawing devices. The improvement according to the invention makes it possible to achieve increased cross-sectional reduction and/or increased drawing velocity, especially in the case of materials having poor drawing properties.
According to the invention there is provided a device for drawing wire, rod, pipe, or the like under hydrodynamic pressure, the said device comprising a lubricating duct open at one end and preceding a drawing duct, in which the lubricant pressure builds up, the said lubricating duct tapering conically towards the said drawing duct, characterized in that the nozzle-shaped drawing duct and the lubricating duct are each arranged in a separate element, the walls of the said lubricating duct being at an angle of between
a) producing the pressure by means of external pumps;
b) producing the pressure by means of a lubricating duct in which the pressure builds up as a function of the length and diameter of the duct in relation to the diameter of the wire, rod or pipe to be drawn;
c) suitably shaped double or multiple drawing dies.
When drawing is carried out using hydrodynamic lubrication, it is known to use a conical lubricating duct, to which end the said duct is arranged in the drawing-tool and precedes the deformation zone in the draw-ing die. In this case, the lubricating duct and deformation zone have conical walls which merge smoothly into each other and which are at the same angle to the axis of the duct. One-piece drawing tools of this kind are described in United States Patents 2,343,118 and 3,763,680.
It is the purpose of the present invention to improve these known drawing devices. The improvement according to the invention makes it possible to achieve increased cross-sectional reduction and/or increased drawing velocity, especially in the case of materials having poor drawing properties.
According to the invention there is provided a device for drawing wire, rod, pipe, or the like under hydrodynamic pressure, the said device comprising a lubricating duct open at one end and preceding a drawing duct, in which the lubricant pressure builds up, the said lubricating duct tapering conically towards the said drawing duct, characterized in that the nozzle-shaped drawing duct and the lubricating duct are each arranged in a separate element, the walls of the said lubricating duct being at an angle of between
2 and 10 to the axis thereof and the lubricating duct merging with the ~ti 1~ 7~93 drawing duct without an intermediate gap and without substantial widening thereof.
: Accommodating the lubricating duct and the drawing die or duct in separate elements makes it possi~le for the two ducts to be of different designs adapted to their respective functions. For instance, the diameter, . conicity and length of the drawing duct may be fully adapted to the lubricant .~
' ., .
Y, -la-~147~93 to be used and to the desired lubricant pressure at the end of the lubricat-ing duct, which is a function of the material to be drawn and the drawing velocity.
Since the drawing duct is arranged in its own element, it may be shaped to produce optimal deformation. The conical lubricating ducts have hitherto extended into the drawing ducts at the same conicity, which has made it impossible for the drawing duct to be shaped to produce optimal deformation of the relevant material. The high lubricant pressure attain-able in the drawing duct as a result of the conical shape thereof made it seem undesirable to allow two elements to abut in this area, since it was feared that sealing problems might result.
The hydrodynamic pressure does not build up linearly in the lubri-cating duct, but may lead to a maximum in that duct and therefore before the drawing duct. With proper choice of duct conicity and length, lubricant viscosity and drawing velocity, the pressures achieved may be so high that the material to be drawn is deeormed before it enters the drawing die. This means that the drawing tool itself performs little deformation. Thus, if full use is made of the deformation in the drawing die, it is possible to obtain increased cross-sectional reduction, to wit by the amount which already occurs in the lubricating duct. Deformation in the lubricating duct is not at all times uniform, and the drawing die therefore also performs the function of calibrating the material being drawn.
Depending upon the drawing conditions, therefore, it is possible to obtain increased cross-sectional reduction per drawing tool, increased - drawing velocity, or significantly longer drawing-tool life, as compared with known devices of the type mentioned at the beginning hereof.
With suitable choice of the angle of inclination, the inlet and outlet diameter of the duct, the length thereof, and the viscosity of the ~1~7293 lubricant, pressures of up to 20,000 bars may be achieved. Most materials in practice deform under a maximal pressure of this order.
An embodiment of the device according to the invention is illus-trated in cross section - in part diagrammatically - in the drawing attached hereto. In the said drawing, drawing die 1 is located in bore 2 of a tool-holder 3. The latter has an internal thread into which a nipple 4 is ` screwed which presses drawing die 1 against a shoulder 5 in the tool-holder.
Nipple 4 has a conical duct 6 tapering towards drawing die 1.
; Even when most of the deformation of the material being drawn takes place before the drawing die, a considerable amount of heat is developed with large cross-sectional reductions and/or high drawing velocities. For this reason it may be necessary to cool the drawing die. To this end tool-holder 3 has an annular duct 7 covered by an annular disc 8 screwed to the tool-holder, annular seals 9 being provided for sealing. The cooling agent is supplied and carried away through lines 10 and 11.
The angle between the wall and the axis of the duct depends upon the viscosity of the lubricant used and thus upon the material being drawn.
For the purpose of drawing copper, or copper-alloy, wire, an angle of between 4 and 5 has been found particularly satisfactory.
: Accommodating the lubricating duct and the drawing die or duct in separate elements makes it possi~le for the two ducts to be of different designs adapted to their respective functions. For instance, the diameter, . conicity and length of the drawing duct may be fully adapted to the lubricant .~
' ., .
Y, -la-~147~93 to be used and to the desired lubricant pressure at the end of the lubricat-ing duct, which is a function of the material to be drawn and the drawing velocity.
Since the drawing duct is arranged in its own element, it may be shaped to produce optimal deformation. The conical lubricating ducts have hitherto extended into the drawing ducts at the same conicity, which has made it impossible for the drawing duct to be shaped to produce optimal deformation of the relevant material. The high lubricant pressure attain-able in the drawing duct as a result of the conical shape thereof made it seem undesirable to allow two elements to abut in this area, since it was feared that sealing problems might result.
The hydrodynamic pressure does not build up linearly in the lubri-cating duct, but may lead to a maximum in that duct and therefore before the drawing duct. With proper choice of duct conicity and length, lubricant viscosity and drawing velocity, the pressures achieved may be so high that the material to be drawn is deeormed before it enters the drawing die. This means that the drawing tool itself performs little deformation. Thus, if full use is made of the deformation in the drawing die, it is possible to obtain increased cross-sectional reduction, to wit by the amount which already occurs in the lubricating duct. Deformation in the lubricating duct is not at all times uniform, and the drawing die therefore also performs the function of calibrating the material being drawn.
Depending upon the drawing conditions, therefore, it is possible to obtain increased cross-sectional reduction per drawing tool, increased - drawing velocity, or significantly longer drawing-tool life, as compared with known devices of the type mentioned at the beginning hereof.
With suitable choice of the angle of inclination, the inlet and outlet diameter of the duct, the length thereof, and the viscosity of the ~1~7293 lubricant, pressures of up to 20,000 bars may be achieved. Most materials in practice deform under a maximal pressure of this order.
An embodiment of the device according to the invention is illus-trated in cross section - in part diagrammatically - in the drawing attached hereto. In the said drawing, drawing die 1 is located in bore 2 of a tool-holder 3. The latter has an internal thread into which a nipple 4 is ` screwed which presses drawing die 1 against a shoulder 5 in the tool-holder.
Nipple 4 has a conical duct 6 tapering towards drawing die 1.
; Even when most of the deformation of the material being drawn takes place before the drawing die, a considerable amount of heat is developed with large cross-sectional reductions and/or high drawing velocities. For this reason it may be necessary to cool the drawing die. To this end tool-holder 3 has an annular duct 7 covered by an annular disc 8 screwed to the tool-holder, annular seals 9 being provided for sealing. The cooling agent is supplied and carried away through lines 10 and 11.
The angle between the wall and the axis of the duct depends upon the viscosity of the lubricant used and thus upon the material being drawn.
For the purpose of drawing copper, or copper-alloy, wire, an angle of between 4 and 5 has been found particularly satisfactory.
Claims
PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A device for drawing wire, rod, pipe, or the like under hydro-dynamic pressure, the said device comprising a lubricating duct open at one end and preceding a drawing duct, in which the lubricant pressure builds up, the said lubricating duct tapering conically towards the said drawing duct, characterized in that the nozzle-shaped drawing duct and the lubricating duct are each arranged in a separate element, the walls of the said lubricating duct being at an angle of between 2 and 10° to the axis thereof and the lubricating duct merging with the drawing duct without an intermediate gap and without substantial widening thereof.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA1561/79 | 1979-03-01 | ||
| AT0156179A AT372022B (en) | 1979-03-01 | 1979-03-01 | DEVICE FOR DRAWING WIRE, RODS, TUBES OD. DGL. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1147293A true CA1147293A (en) | 1983-05-31 |
Family
ID=3516063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000346736A Expired CA1147293A (en) | 1979-03-01 | 1980-02-29 | Device for drawing wire, rod, pipe or the like |
Country Status (16)
| Country | Link |
|---|---|
| EP (1) | EP0025041A1 (en) |
| JP (1) | JPS56500245A (en) |
| AR (1) | AR222371A1 (en) |
| AT (1) | AT372022B (en) |
| BE (1) | BE882013A (en) |
| BR (1) | BR8007227A (en) |
| CA (1) | CA1147293A (en) |
| DE (1) | DE3034315D2 (en) |
| ES (1) | ES8100914A1 (en) |
| GB (1) | GB2055656A (en) |
| IT (1) | IT1128880B (en) |
| PL (1) | PL222396A1 (en) |
| SE (1) | SE8007645L (en) |
| WO (1) | WO1980001765A1 (en) |
| YU (1) | YU54580A (en) |
| ZA (1) | ZA801190B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2820661B1 (en) * | 2001-02-14 | 2004-09-24 | Roger Marcel Sabau | DEVICE FOR DRAWING OR DRAWING FERROUS AND NON-FERROUS METALS (WIRES, BARS, TUBES) WITH NEARLY ZERO WEARING OF THE DIES AND TOTAL RESPECT OF THE SURFACE CONDITION OF ALL PRODUCTS MANUFACTURED |
| FR2820660B1 (en) * | 2001-02-14 | 2003-04-04 | Roger Marcel Sabau | DEVICE FOR DRAWING OR DRAWING METALS, FERROUS AND NON-FERROUS (WIRES, BARS, TUBES) WITH NEARLY ZERO WEARING OF THE DIES AND TOTAL RESPECT OF THE SURFACE CONDITION OF ALL PRODUCTS MANUFACTURED |
| EP1388379A1 (en) * | 2002-08-08 | 2004-02-11 | Roger Sabau | Device for drawing or stretching (wires, bars, tubes) with a quasi zero wear of the die and the reaching of optimal tribological conditions |
| US9635962B2 (en) | 2012-04-12 | 2017-05-02 | Cabeau, Inc. | Travel pillow with lateral and rear support bar and a flat and thin back |
| US10321765B2 (en) | 2014-03-11 | 2019-06-18 | Cabeau, Inc. | Travel pillow |
| US9968197B2 (en) | 2014-03-11 | 2018-05-15 | Cabeau, Inc. | Travel pillow |
| USD762400S1 (en) | 2014-10-20 | 2016-08-02 | Cabeau, Inc. | Travel pillow |
| CN206525873U (en) | 2015-09-29 | 2017-09-29 | 卡布公司 | For supporting the head of user or the pillow of neck and the closing organ of magnetic |
| USD790880S1 (en) | 2015-09-29 | 2017-07-04 | Cabeau, Inc. | Neck pillow |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1582434A (en) * | 1926-02-08 | 1926-04-27 | Simons Abraham | Apparatus for drawing wire |
| US2029039A (en) * | 1934-11-06 | 1936-01-28 | Simons Aaron | Process and apparatus for wire drawing |
| US2088040A (en) * | 1936-08-07 | 1937-07-27 | Simons Abraham | Method of and apparatus for wiredrawing |
| FR1139790A (en) * | 1954-11-30 | 1957-07-04 | Nat Res Dev | Wire drawing method and apparatus |
| US3080962A (en) * | 1959-06-12 | 1963-03-12 | Copperweld Steel Co | Die drawing of clad rod or wire |
| US3413832A (en) * | 1965-07-27 | 1968-12-03 | Nat Standard Co | Wire drawing method |
-
1979
- 1979-03-01 AT AT0156179A patent/AT372022B/en not_active IP Right Cessation
-
1980
- 1980-02-21 AR AR280041A patent/AR222371A1/en active
- 1980-02-28 YU YU00545/80A patent/YU54580A/en unknown
- 1980-02-29 GB GB8034502A patent/GB2055656A/en not_active Withdrawn
- 1980-02-29 ZA ZA00801190A patent/ZA801190B/en unknown
- 1980-02-29 JP JP50052080A patent/JPS56500245A/ja active Pending
- 1980-02-29 WO PCT/AT1980/000008 patent/WO1980001765A1/en not_active Application Discontinuation
- 1980-02-29 BR BR8007227A patent/BR8007227A/en unknown
- 1980-02-29 BE BE0/199620A patent/BE882013A/en not_active IP Right Cessation
- 1980-02-29 DE DE80AT8000008T patent/DE3034315D2/en not_active Expired
- 1980-02-29 CA CA000346736A patent/CA1147293A/en not_active Expired
- 1980-02-29 IT IT67320/80A patent/IT1128880B/en active
- 1980-02-29 ES ES489069A patent/ES8100914A1/en not_active Expired
- 1980-03-01 PL PL22239680A patent/PL222396A1/xx unknown
- 1980-09-10 EP EP80900432A patent/EP0025041A1/en not_active Withdrawn
- 1980-10-30 SE SE8007645A patent/SE8007645L/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AR222371A1 (en) | 1981-05-15 |
| WO1980001765A1 (en) | 1980-09-04 |
| YU54580A (en) | 1983-01-21 |
| BR8007227A (en) | 1980-12-30 |
| SE8007645L (en) | 1980-10-30 |
| JPS56500245A (en) | 1981-03-05 |
| IT1128880B (en) | 1986-06-04 |
| BE882013A (en) | 1980-06-16 |
| ES489069A0 (en) | 1980-12-01 |
| EP0025041A1 (en) | 1981-03-18 |
| ES8100914A1 (en) | 1980-12-01 |
| GB2055656A (en) | 1981-03-11 |
| ZA801190B (en) | 1981-05-27 |
| ATA156179A (en) | 1983-01-15 |
| AT372022B (en) | 1983-08-25 |
| IT8067320A0 (en) | 1980-02-29 |
| DE3034315D2 (en) | 1981-04-23 |
| PL222396A1 (en) | 1980-11-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |