WO2017032959A1 - Ultrasonically vibrated die rings - Google Patents
Ultrasonically vibrated die rings Download PDFInfo
- Publication number
- WO2017032959A1 WO2017032959A1 PCT/GB2015/052486 GB2015052486W WO2017032959A1 WO 2017032959 A1 WO2017032959 A1 WO 2017032959A1 GB 2015052486 W GB2015052486 W GB 2015052486W WO 2017032959 A1 WO2017032959 A1 WO 2017032959A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- end surface
- die ring
- die
- mounting tube
- ring
- Prior art date
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
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/006—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing using vibratory energy
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B3/00—Methods or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
-
- 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
- B21C3/04—Dies; Selection of material therefor; Cleaning thereof with non-adjustable section
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/008—Processes combined with methods covered by groups B21D1/00 - B21D31/00 involving vibration, e.g. ultrasonic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D51/00—Making hollow objects
- B21D51/16—Making hollow objects characterised by the use of the objects
- B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
- B21D51/2615—Edge treatment of cans or tins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D51/00—Making hollow objects
- B21D51/16—Making hollow objects characterised by the use of the objects
- B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
- B21D51/2615—Edge treatment of cans or tins
- B21D51/2638—Necking
Definitions
- the invention relates to an apparatus for forming metal workpieces by driving the workpieces into a die. It has particular application to annular workpieces that commonly have circular symmetry about the axis of movement, whereby the forming process changes the longitudinal profile of the workpiece, for example to form a neck of reduced radius and predetermined shape.
- US patent 4,854, 149 (Porucznik et al.) illustrates examples of such an ultrasonically - assisted forming process.
- the end of the workpiece to be formed is inserted coaxially into the profiled aperture of a die ring.
- a transducer is attached to the die ring at a location on its circumference and delivers ultrasonic energy into the die ring.
- the transducer vibrates along its own longitudinal axis, which is aligned with a radius of the die ring.
- the radial application of ultrasonic vibrations to the die ring induces resonant modes of vibration, depending on the shape and material of the die ring and the frequency applied.
- the die ring is mounted on a forming machine via a mounting tube that is coaxial with the die ring.
- the die ring needs to be mounted firmly enough to withstand the high forces exerted on it during the forming of a metal workpiece, while allowing it to vibrate as freely as possible at the applied frequency. It is desirable to minimize the transmission of vibrations from the die ring into the mounting tube, both because this causes energy to be lost from the die ring and because it may interfere with the desired mode of vibration of the die ring.
- the pure radial mode R0 cannot generally be achieved at suitable frequencies and within the typical space constraints of a die in a forming machine.
- the die ring can readily be induced to vibrate in a "radial bending" mode termed "RBO", which is schematically illustrated in Figures 1 A to 1C.
- Figure 1 A shows a simple, hollow cylinder in its resting state. Because the harmonic number is zero, this mode continues to display circular symmetry about the axis of the ring, whereby in ideal circumstances the contact between the working surface of the die ring and the workpiece is synchronous around any given circumference.
- the expansion and contraction are also substantially synchronous along the axis of the die ring. However, the amplitude of the vibration is not uniform along the axis.
- the component oscillates between an hourglass shape (Figure IB) and a barrel shape (Figure 1C) over a cycle of the vibration, passing through approximately its original cylindrical configuration (Figure 1A) at the midpoint between each of these two extremes.
- Figure IB the annular end surface of the component bulges outwards in a convex cone
- Figure 1C the annular end surface of the component sinks inwards in a concave cone.
- shape of the end surface in these configurations is not necessarily a true cone, i.e. a plane containing the axis may intersect the end surface in a curved line rather than a straight line.
- the invention provides a die, comprising: a generally cylindrical die ring comprising an end surface and having a radial bending (RBO) mode of vibration in which the end surface oscillates between a concave and a convex state; and
- RBO radial bending
- a mounting tube coaxial with the die ring and extending from the end surface of the die ring;
- the mounting tube joins the end surface of the die ring at a radius where the amplitude of the oscillation of the end surface is at a minimum.
- the invention also provides a method of operating a die that comprises a generally cylindrical die ring having an end surface; and a mounting tube coaxial with the die ring and extending from the end surface.
- the method comprises vibrating the die ring in a radial bending (RBO) mode, in which the end surface of the die ring oscillates between a concave and a convex state, characterized in that the minimum amplitude of the oscillation of the end surface occurs at a radius where the mounting tube joins the end surface.
- RBO radial bending
- the radius of the mounting tube joins the end surface of the die ring at a radius where the amplitude of the oscillation is at a minimum, the undesired transmission of vibrational energy from the die ring into the mounting tube can be reduced.
- Figures 1 A to 1C are perspective views of a computer model of an annular component undergoing vibration in radial bending mode RBO.
- Figure ID is a schematic sectional view of the end wall of the component of Figure 1 A, shown at the two extremes of its vibration.
- Figures 2A and 2B are perspective views in different orientations of a die in accordance with the invention.
- Figure 3 is a longitudinal section of the die of Figure 2. Description of the preferred embodiment
- Figure ID schematically shows the end wall of the component of Figure 1 A at the two extremes of its vibration in the radial bending mode RBO.
- Dotted lines 30 show the component in its "hourglass” configuration, corresponding to Figure IB.
- Solid lines 32 show the component in its "barrel” configuration, corresponding to Figure 1 C. It can be seen that the movement of any point on the surface of the end wall between the two extremes is principally in a direction parallel to the axis 34.
- a point P on the radially outer part of the end surface moves between a greater axial elongation in the barrel configuration and a smaller axial elongation in the hourglass configuration, while a point Q on the radially inner part of the end surface does the opposite, oscillating 180° out of phase with the outer part.
- the amplitude of the oscillation of the end surface must be at a minimum.
- the movement of the points on the end surface is not in general purely axial - there is also a radial component - but it is still true that at an intermediate radius there exists a circle of points on the end surface where the amplitude of the oscillation of the points is at a minimum.
- the amplitude may be defined in various ways. Preferably, it is the straight-line distance between the corresponding points at the two extremes of the oscillation. Alternatively, the amplitude may be measured along the path that a point on the surface follows between those two extremes. Another possibility is to measure only the component of the movement parallel to the axis. If preferred, the amplitude may be defined as one half of any of the aforementioned values, to conform to the conventional definition for a waveform; this makes no difference to identifying the radius at which the minimum value occurs.
- FIGS 2A, 2B and 3 illustrate a die 1 according to an embodiment of the present invention.
- the die 1 incorporates a die ring 2 that defines a central axis 3.
- the die ring 2 is formed integrally with a resonant mounting tube 4.
- the mounting tube 4 is coaxial with the die ring 2 and extends axially from an end surface 5 of the die ring 2.
- Part way along the tube 4 is a radially projecting flange 6, which is used for mounting the die 1 on a forming machine (not shown) to support the die ring in use.
- the section of the tube 4 between the die ring 2 and the flange 6 is thin-walled so as to be relatively flexible and to minimize the coupling of the vibration of the die ring 2 into the tube 4.
- the die ring 2 has a central aperture 8 that opens to the axial end remote from the mounting tube 4.
- the interior wall of the aperture 8 defines a working surface 10 that is profiled to form a tubular workpiece (not shown) as it is driven into the aperture against the working surface 10.
- the die ring 2 is vibrated ultrasonically to assist the forming process.
- the outer surface 12 of the die ring 2 is generally cylindrical. At one point on its circumference there is formed a planar surface, parallel to the axis, that acts as an interface 14 for an ultrasonic transducer (not shown).
- the interface surface 14 has a threaded bore 16 in its centre for receiving a stud (not shown) that is used to secure the transducer.
- the shape and material of the die ring 2 are chosen such that, when an ultrasonic transducer is coupled to the interface 14 and introduces energy at a predetermined frequency, the die ring 2 vibrates in the previously described radial bending mode RBO. During this vibration, the end surface 5 oscillates between a convex and a concave configuration as illustrated in Figure ID.
- the radius R of the mounting tube 4 where it joins the end surface 5 is equal to the radius where the amplitude of this oscillation of the end surface 5 is at a minimum. More precisely, the circle of points on the end surface where the oscillation is a minimum lies within the thickness of the wall of the mounting tube.
- the vibration modes of the die ring 2 can be considered independently from those of the mounting tube 4.
- the mounting tube 4 joins the end surface 5 of the die ring 2 where the amplitude of vibration is at a minimum so it is desirable to design the mounting tube 4 such that at the operating frequency the vibration of the mounting tube 4 is also at a minimum at that junction.
- the mounting tube 4 typically vibrates in an axisymmetric mode with nodes and antinodes of vibration distributed along its length.
- a node of the mounting tube preferably coincides with the junction of the mounting tube and the die ring so that the amplitude of vibration is at a local minimum there.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP15770586.4A EP3341146B8 (en) | 2015-08-27 | 2015-08-27 | Ultrasonically vibrated die rings |
ES15770586T ES2759350T3 (en) | 2015-08-27 | 2015-08-27 | Matrix rings with ultrasonic vibration |
PCT/GB2015/052486 WO2017032959A1 (en) | 2015-08-27 | 2015-08-27 | Ultrasonically vibrated die rings |
BR112018003915-2A BR112018003915A2 (en) | 2015-08-27 | 2015-08-27 | ultrasonically vibrated mold rings |
PL15770586T PL3341146T3 (en) | 2015-08-27 | 2015-08-27 | Ultrasonically vibrated die rings |
US15/755,802 US20180326468A1 (en) | 2015-08-27 | 2015-08-27 | Ultrasonically Vibrated Die Rings |
MX2018002475A MX2018002475A (en) | 2015-08-27 | 2015-08-27 | Ultrasonically vibrated die rings. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/GB2015/052486 WO2017032959A1 (en) | 2015-08-27 | 2015-08-27 | Ultrasonically vibrated die rings |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2017032959A1 true WO2017032959A1 (en) | 2017-03-02 |
Family
ID=54196990
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2015/052486 WO2017032959A1 (en) | 2015-08-27 | 2015-08-27 | Ultrasonically vibrated die rings |
Country Status (7)
Country | Link |
---|---|
US (1) | US20180326468A1 (en) |
EP (1) | EP3341146B8 (en) |
BR (1) | BR112018003915A2 (en) |
ES (1) | ES2759350T3 (en) |
MX (1) | MX2018002475A (en) |
PL (1) | PL3341146T3 (en) |
WO (1) | WO2017032959A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109622656A (en) * | 2018-11-10 | 2019-04-16 | 江苏兴达钢帘线股份有限公司 | A kind of production technology for the steel wire that sebific duct fatigue resistance can be improved |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4854149A (en) | 1987-06-30 | 1989-08-08 | Metal Box Plc | Reducing the diameter of tubular bodies |
US5095733A (en) | 1989-03-28 | 1992-03-17 | Cmb Foodcan Plc | Maintaining a preferred vibration mode in an annular article |
EP1273363A2 (en) * | 2001-07-02 | 2003-01-08 | Forschungsgesellschaft Umformtechnik m.b.H. | Axial support for an ultrasonically vibrating die, in particular for wire, bar or tube drawing |
WO2015025769A1 (en) * | 2013-08-22 | 2015-02-26 | 昭和電工株式会社 | Metalworking die |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10161250B4 (en) * | 2001-12-13 | 2004-05-06 | Daimlerchrysler Ag | Method for mechanical joining of metal sheets |
-
2015
- 2015-08-27 US US15/755,802 patent/US20180326468A1/en not_active Abandoned
- 2015-08-27 BR BR112018003915-2A patent/BR112018003915A2/en not_active Application Discontinuation
- 2015-08-27 PL PL15770586T patent/PL3341146T3/en unknown
- 2015-08-27 EP EP15770586.4A patent/EP3341146B8/en active Active
- 2015-08-27 ES ES15770586T patent/ES2759350T3/en active Active
- 2015-08-27 WO PCT/GB2015/052486 patent/WO2017032959A1/en active Application Filing
- 2015-08-27 MX MX2018002475A patent/MX2018002475A/en unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4854149A (en) | 1987-06-30 | 1989-08-08 | Metal Box Plc | Reducing the diameter of tubular bodies |
US5095733A (en) | 1989-03-28 | 1992-03-17 | Cmb Foodcan Plc | Maintaining a preferred vibration mode in an annular article |
EP1273363A2 (en) * | 2001-07-02 | 2003-01-08 | Forschungsgesellschaft Umformtechnik m.b.H. | Axial support for an ultrasonically vibrating die, in particular for wire, bar or tube drawing |
WO2015025769A1 (en) * | 2013-08-22 | 2015-02-26 | 昭和電工株式会社 | Metalworking die |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109622656A (en) * | 2018-11-10 | 2019-04-16 | 江苏兴达钢帘线股份有限公司 | A kind of production technology for the steel wire that sebific duct fatigue resistance can be improved |
Also Published As
Publication number | Publication date |
---|---|
ES2759350T3 (en) | 2020-05-08 |
MX2018002475A (en) | 2019-01-10 |
EP3341146A1 (en) | 2018-07-04 |
EP3341146B8 (en) | 2019-10-02 |
EP3341146B1 (en) | 2019-08-28 |
US20180326468A1 (en) | 2018-11-15 |
PL3341146T3 (en) | 2020-06-15 |
BR112018003915A2 (en) | 2018-09-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FI95544B (en) | Reducing the diameter of tubular bodies | |
US8899295B2 (en) | Ultrasonic oscillating unit with holder | |
JP3650158B2 (en) | Vibration member mounting apparatus and method for mounting vibration member | |
US20200213495A1 (en) | Vibrating device and optical detector device | |
JP5930595B2 (en) | Vibrating actuator, vibrator and vibrator manufacturing method | |
CN101340985B (en) | Device for the ultrasonic processing of a workpiece | |
JP3278846B2 (en) | Modular unit for tubular sonicator | |
JP4755102B2 (en) | Ultrasonic horn mount | |
EP3341146B1 (en) | Ultrasonically vibrated die rings | |
US20020130157A1 (en) | Symmetric ultrasonic rotary horn | |
KR20110021858A (en) | Resonant nodal mount for linear ultrasonic horns | |
JPH03180223A (en) | Forming die and its manufacture | |
JPH0248153A (en) | Supporting device for ultrasonic vibrator | |
US3212312A (en) | Apparatus utilizing vibratory energy | |
JPH08294673A (en) | Ultrasonic horn for converting composite vibration | |
WO2015025769A1 (en) | Metalworking die | |
US6984921B1 (en) | Apparatus and method for resonant mounting of vibration structure | |
US3910085A (en) | Vibratory forming of materials | |
WO2017032958A1 (en) | Ultrasonically vibrated die rings | |
JPH10303240A (en) | Ultrasonic wave horn of wire bonding device | |
WO2017021671A1 (en) | Ultrasonically vibrated die and method of its operation | |
US4072034A (en) | Method and apparatus for forming material by forcing through a die orifice | |
GB2251570A (en) | Improvements in or relating to vibratable ring-like structures | |
US20020134813A1 (en) | Large vibration tool, especially for welding applications | |
JP2005059090A (en) | Die holder, and ultrasonic drawing device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 15770586 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 15755802 Country of ref document: US Ref document number: MX/A/2018/002475 Country of ref document: MX |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: 112018003915 Country of ref document: BR |
|
ENP | Entry into the national phase |
Ref document number: 112018003915 Country of ref document: BR Kind code of ref document: A2 Effective date: 20180227 |