WO2011124627A1 - Procédé pour séparer des pièces par rupture, pièce et unité laser - Google Patents

Procédé pour séparer des pièces par rupture, pièce et unité laser Download PDF

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Publication number
WO2011124627A1
WO2011124627A1 PCT/EP2011/055384 EP2011055384W WO2011124627A1 WO 2011124627 A1 WO2011124627 A1 WO 2011124627A1 EP 2011055384 W EP2011055384 W EP 2011055384W WO 2011124627 A1 WO2011124627 A1 WO 2011124627A1
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WO
WIPO (PCT)
Prior art keywords
laser
notch
workpiece
feed rate
feed
Prior art date
Application number
PCT/EP2011/055384
Other languages
German (de)
English (en)
Other versions
WO2011124627A9 (fr
Inventor
Siegfried Gruhler
Horst SCHÖLLHAMMER
Willi Breithaupt
Joachim Klein
Original Assignee
Mauser-Werke Oberndorf Maschinenbau Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=44314124&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2011124627(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority to BR112012025493A priority Critical patent/BR112012025493A2/pt
Priority to EP11719776A priority patent/EP2555904A1/fr
Priority to CN201180023093.4A priority patent/CN102939182B/zh
Priority to KR1020127029079A priority patent/KR101609654B1/ko
Priority to MX2012011690A priority patent/MX2012011690A/es
Application filed by Mauser-Werke Oberndorf Maschinenbau Gmbh filed Critical Mauser-Werke Oberndorf Maschinenbau Gmbh
Publication of WO2011124627A1 publication Critical patent/WO2011124627A1/fr
Publication of WO2011124627A9 publication Critical patent/WO2011124627A9/fr
Priority to CN201280017478.4A priority patent/CN103648707B/zh
Priority to MX2013011618A priority patent/MX2013011618A/es
Priority to KR1020137029344A priority patent/KR101609657B1/ko
Priority to EP12714675.1A priority patent/EP2694242A1/fr
Priority to PCT/EP2012/056480 priority patent/WO2012136858A1/fr
Priority to JP2014503178A priority patent/JP6071996B2/ja
Priority to BR112013025805A priority patent/BR112013025805A2/pt
Priority to US14/110,023 priority patent/US20140090515A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/36—Removing material
    • B23K26/362—Laser etching
    • B23K26/364—Laser etching for making a groove or trench, e.g. for scribing a break initiation groove
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D31/00—Shearing machines or shearing devices covered by none or more than one of the groups B23D15/00 - B23D29/00; Combinations of shearing machines
    • B23D31/002—Breaking machines, i.e. pre-cutting and subsequent breaking
    • B23D31/003—Breaking machines, i.e. pre-cutting and subsequent breaking for rings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08—Devices involving relative movement between laser beam and workpiece
    • B23K26/0869—Devices involving movement of the laser head in at least one axial direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
    • F16C17/022—Sliding-contact bearings for exclusively rotary movement for radial load only with a pair of essentially semicircular bearing sleeves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C9/00—Bearings for crankshafts or connecting-rods; Attachment of connecting-rods
    • F16C9/04—Connecting-rod bearings; Attachments thereof
    • F16C9/045—Connecting-rod bearings; Attachments thereof the bearing cap of the connecting rod being split by fracturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/006—Vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2300/00—Application independent of particular apparatuses
    • F16C2300/02—General use or purpose, i.e. no use, purpose, special adaptation or modification indicated or a wide variety of uses mentioned

Definitions

  • the invention relates to a method for fracture separation of workpieces according to the preamble of patent claim 1, a workpiece produced by such a method and a laser unit.
  • EP 0 808 228 B2 of the Applicant describes a generic fracture separation method in which a notch which predetermines the fracture plane is formed in a connecting rod eye to be fractured by means of laser energy.
  • This notch consists of a plurality of notch sections, the distance of which is essentially based on the pulse rate of the laser and the feed rate of the laser beam with respect to
  • a certain disadvantage of the above-described procedure is that - as explained - the feed rate and the pulse rate must be coordinated so that form the notch behavior improving notch sections. Furthermore, it has been found that, especially in the case of the formation of sinusoidal notches or of connecting rods with a large axial length, the laser beam must be refocused, because the depth of field is not sufficient to perform the notch sections (perforation) with the required precision.
  • the object of the invention is to provide a method which enables the creation of notch sections of a fracture separation notch with little effort.
  • the object of the invention is furthermore to provide a workpiece produced by such a method and a laser unit for carrying out the method.
  • a laser notch is formed by means of laser energy, this notch having a plurality of notch sections.
  • the pulse rate, the workpiece material and the average laser power are coordinated so that the distance of the notch portions is substantially greater than the notch spacing, which results arithmetically from the feed rate, the relative movement and the pulse rate (frequency) of the laser.
  • the coupling of the laser beam is preferably carried out obliquely to the longitudinal axis Kerbl.
  • the feed rate during laser processing is varied so that a notch with different lent deep notch sections is formed.
  • the depth of a continuous region referred to as the notch base in the following, can be varied by the variation of the feed rate
  • Such a notch has a further improved notch effect number and thus improved fracture mechanics.
  • the variation of the feed rate takes place according to a periodic function, for example a sine function or depending on the component geometry.
  • the feed rate during laser processing can vary in the range between 100mm / min and 1500mm / min.
  • the laser beam can be moved relative to the stationary workpiece, in kinematic reversal, however, the workpiece can be moved relative to the stationary laser, mixed forms are advantageous.
  • the laser beam can be radial, d. h., Are coupled perpendicular to the fracture separation notch or obliquely to the fracture separation notch.
  • the notch portions are thus perpendicular to the notch axis, while they are employed at an oblique coupling obliquely to the notch axis.
  • the coupling is preferably carried out at an angle of ⁇ 45 ° (with respect to the plane perpendicular to the longitudinal axis Kerbl Kunststoffsachse (in a connecting rod that is the radial plane of the Connecting rod)).
  • the angle would thus be, for example, 30 ° to the horizontal and 60 ° to the vertical (see FIG. 11).
  • the actual kerf spacing which is established on the basis of the choice of the parameters, is more than 1 (times the arithmetic notch spacing, which results from the pulse rate and the feed rate.
  • fiber laser it is preferred if a so-called fiber laser is used as the laser.
  • fiber lasers are known from the prior art, so that detailed descriptions of the structure can be dispensed with.
  • a laser with an average power of less than 50 watts and a pulse rate of substantially more than 1 KHz, preferably more than 10 kHz is used, wherein the feed may be more than 1000 mm / min.
  • the pulse rate in conventional methods is about the same
  • the pulse frequency is significantly longer, for example, 50 to 140Hz.
  • the notch portions extend out of a continuous notch base.
  • the workpiece produced by the method may be, for example, a connecting rod or a crankcase or other workpiece in which a bearing eye or other area to be separated by a fracture separation process.
  • the workpiece produced by the method can have notch portions of varying depth by varying the feed rate of the laser. It is particularly preferred if these variations are repeated periodically along the notch portion.
  • a laser unit for carrying out the method has a laser module, a laser head for focusing the laser beam emitted via the laser module onto a workpiece to be machined and an feed axis which is effective in the feed direction. This can be controlled by a control unit such that the feed is varied periodically during the laser processing.
  • a highly dynamic feed axis is preferred, with which the feed rate changes with an acceleration of more than 0.5 g, preferably in the range of 1 to 2g can be carried out. That is, the feed rate profiles can be sinusoidally performed with high precision, in the limit, even almost rectangular.
  • Figure 1 is a schematic diagram of a laser unit for producing a fracture separation notch in a large connecting rod
  • FIG. 2 shows a greatly enlarged illustration of a fracture separation notch produced by the method according to the invention
  • FIG. 3 a corresponding representation with modified laser power and / or pulse rate
  • FIG. 4 shows fracture separation notches depending on the feed
  • FIG. 5 shows fracture separation notches as a function of the mean laser power
  • Figure 6 is a diagram illustrating the dependence of a notch depth of a feed of the laser beam
  • FIG. 7 shows a diagram for illustrating feed rate modulation as a function of time
  • FIG. 8 shows a diagram and an illustration to illustrate the resulting notch depth as a function of the average feed rate in feed rate modulation
  • FIG. 9 shows fracture separation notches under comparable conditions with and without feed rate modulation
  • FIG. 10 shows a schematic illustration of a laser unit that can be used in a feed rate modulation laser method
  • 1 1 is a schematic diagram of a laser head of the laser unit according to FIG. 10.
  • Figure 1 shows a sectional view of a large connecting rod 1, which is to be separated by fracture separation in a bearing shell and a connecting rod side part.
  • the course of this fracture separation plane 2 is predetermined by two diametrical fracture separation notches 4 (only one shown in FIG. 1), which is preferably formed in the form of a perforation with a multiplicity of notch sections 6.
  • two diametrical fracture separation notches 4 (only one shown in FIG. 1), which is preferably formed in the form of a perforation with a multiplicity of notch sections 6.
  • a fiber laser according to the invention is used, whose laser head 8 is shown schematically in FIG.
  • Such fiber lasers may in principle be diode-pumped solid-state lasers, with a core of a glass fiber forming the active medium.
  • the radiation of the solid-state laser is introduced via a coupling into the fiber, in which then takes place the actual laser gain.
  • the beam properties and beam quality of the laser can be adjusted via the geometry of the fiber (glass fiber), so that the laser remains largely independent of external influences and shows a very simple structure.
  • the laser beam After emerging from said active fiber, the laser beam is introduced into a glass fiber, via which the radiation is then directed to the laser head 8 shown in FIG. 1 and directed onto the workpiece 1 to be machined via its focusing optics 10.
  • a laser beam 12 impinges in the radial direction, ie, perpendicular to the notch axis (vertical in FIG. 1).
  • This arrangement may have the disadvantage that the focusing optics 10 are damaged by the melting material. is dirty, because due to the 90 ° coupling reflections and possibly residual melt directly go back the beam path. If coupling takes place at an angle, for example at 30 ° or 45 °, any reflections and residual melt that occur are reduced below the angle of failure (see Figure 1: 12 "") so that no contamination occurs.
  • a laser unit with oblique coupling is described with reference to FIGS. 10 and 11.
  • the notch geometry can additionally be influenced by the trailing (upwards in FIG. 11) or piercing (downward in FIG. 11) beam guidance.
  • the notch geometry can additionally be influenced by the air flow acting through the nozzle through the melt.
  • fiber lasers are characterized by very good electrical-optical efficiencies and outstanding beam quality with great depth of field in a very compact structure, so that less costly solutions can be created with a small space than with conventional lasers. Due to the high peak power and the good focusability of fiber lasers, the power density is relatively high, so that vaporized material content outweighs. However, as part of the energy is converted into heat, there is still melting and heat influence of the environment. In this case, the residual heat can accumulate, so that one obtains pronounced melting phenomena that could lead to the arithmetic notch spacing being significantly smaller than the notch spacing actually occurring and this notching distance is also comparatively stable with variation of the other parameters.
  • the workpiece ie, the connecting rod is firmly clamped and the laser head 8 is at a feed rate V in Axialrich- tion or axis-parallel moves
  • the laser power at about 50 W and the pulse frequency of the laser in the illustrated embodiment is approximately 20KHz.
  • the spot diameter is about 30 ⁇
  • the feed V is about 1500mm / min.
  • a notch spacing of approximately 0.00125 mm would be calculated.
  • the notch spacing K (here at 45 ° obliquely coupled laser beam) is about 0.1 mm.
  • FIG. 2 shows a greatly enlarged view of a concretely processed by the method according to the invention with the above parameters Pleuelauges, in this embodiment, the laser beam obliquely (45 °) is coupled.
  • the average laser power is about 50 W and the pulse power at about 8 kW.
  • the distance between the perforation (notch spacing) K is about 0.1 mm, resulting in a continuous notch base (G), out of which the individual, the perforation forming notch portions 6 extend out.
  • the depth of the notch root G in the embodiment according to FIG. 2 is about 0.51 mm, while the depth P (seen in the radial direction) of the notch sections 6 is about 0.78 mm (measured from the circumferential wall 14 of the connecting-end eye 1).
  • Figure 3 shows a similar embodiment with reduced laser power (40 W) and steeper coupling (30 °) of the laser beam 12 - it can be seen that the notch K results in no significant change, the depth G of the notch base and the depth P of the notch sections are at the steeper coupling and reduced laser power (40 W) slightly larger. With the somewhat steeper coupling, a notch improving the fracture behavior can thus be formed with even less power than in the previously described embodiment.
  • FIG. 4 shows the dependence of the fracture separation notch on the set feed rate V (see FIG. 1) with which the laser beam is moved in the kerf longitudinal direction.
  • the notch distance remains almost unchanged. It is clear, however, that at lower feed speeds on the one hand, the depth G of the notch base is larger and also the axial length of the notch portions (PG) behaves inversely proportional to the feed, the differences between the
  • 500mm / min and 1000mm / min are comparatively low.
  • FIG. 5 shows the dependence of the fracture separation notch on the laser power.
  • an average laser power of 50 W was set.
  • the fracture separation notch shown below results from an average laser power of 100 W, the other parameters being unchanged. It can be seen clearly that with reduced laser power a somewhat finer notch structure with longer notch sections is formed, the notch spacing, however, remaining approximately unchanged, as already indicated above. With the reduced laser power, as expected, a continuous notch bottom with a slightly smaller depth G is formed than at a higher laser power.
  • the use of a laser with comparatively low laser power (50 W and less) at an average feed rate in the range between 500 and 1500 mm / min should therefore be optimal.
  • the beam quality can be improved by a so-called Q-switch.
  • a Q-switch is an optical device which, in a pulsed laser, delays the pulse, reduces the pulse duration, and increases the pulse height (peak power) to give a very sharp laser pulse which increases rapidly and after reaching a sharp maximum quickly drops again. Without such a Q-switch, the pulse is significantly wider and flatter.
  • FIG. 6 shows the dependence of the occurring notch depth on the feed, which is varied between 100 and 3000 mm / min.
  • the dimension S2 corresponds to the above-described dimension G (depth of the notch base) and the dimension S1 of the total depth P (see FIGS. 2 and 3) of the notch, so that the length of the notch portions corresponds to the difference (GP).
  • the upper curve shows the course of the total depth S1 of the notch, while the lower curve shows the course of the depth of the notch base S2. It can be clearly seen that at comparatively low feed rates in the range of up to about 800 mm / min, there is a comparatively strong dependence of the notch depth (S1, S2) on the feed rate.
  • FIG. 7 shows examples of a feed rate modulation, which takes place according to a sine function.
  • the speed modulation can also be carried out according to other, preferably periodic functions. Shown is the course of the feed rates within a certain feed range, which does not correspond to the entire length of the traction fracture notch to be formed as a function of time. Specifically shown here is the feed range between 67.5 and 69.5mm, that is, there are only 2mm of the entire fracture separation notch shown, the velocity modulation in the non-illustrated areas of the fracture separation notch, however, takes place accordingly.
  • the slightly wavy from top left to bottom right shown Curves top dashed curve / bottom continuous curve) show the actual feed toward the fracture separation notch as a function of time t.
  • the feed rate is varied according to the sine functions drawn, the sine function being associated with a larger amplitude of the dashed laser path, while the sine function having a smaller amplitude is assigned to the solid laser motion path. It can be seen that the feed rate is changed relatively high frequency, so that the laser head 8 has to be greatly accelerated and decelerated within a short time in order to adjust the motion profile along the traction fracture notch to be formed.
  • FIG. 8 shows a diagram in which the self-adjusting notch depth depending on the average feed V m , that is, the average value of the above-described speed modulation adjusts.
  • FIG. 8 it can be seen that, for example, at a mean feed rate of 800 mm / min (in fact, the feed rate varies according to the sine function according to FIG.
  • a fracture separation notch adjusts with the progression shown in FIG. It can be seen clearly that different notch sections are formed from a notch base with the dimension S2 (G) corresponding to the sine period.
  • the sections marked S3 are formed in the areas in which the feed rate is comparatively low.
  • the notch sections marked S1 are formed in the areas in which the laser speed moves at a comparatively high speed.
  • the course of the characteristic quantities S1 (G), S2, S3 (P) as a function of the average feed is shown in the diagram according to FIG.
  • the curve above shows the course of the total notch depth (S3) at low feed rate, the curve S1 the course of the notch depth at a comparatively high feed rate (always during the speed modulation) and the curve S2 the course of the depth of the notch base again. It can be seen that the notch depth increases with reduced the average feed rate. It is clearly visible, however, that notch sections with varying notch depths can be formed with appropriate speed modulation. It was found that such a notch has a significantly improved fracture mechanics compared to the aforementioned notches. In other words, the feed rate modulation makes it possible to form comparatively deep, and sharp starting notches which significantly improve the initiation fracture toughness and the arrest fracture toughness against continuous perforation score scores without the feed rate modulation.
  • the modulation of the feed rate can also be done in dependence on the component geometry. That is, for very complex components, such as breakthroughs in the fracture separation notch, the feed rate can be adapted to the geometry of the component, so that in unproblematic areas with a comparatively high feed rate or amplitude of the feed rate modulation is driven, while in more critical areas, the speed modulation accordingly is withdrawn, so that sets a lower average feed rate or a constant feed rate.
  • the laser unit has a laser module 16 which contains, for example, a fiber laser and the control of this fiber laser.
  • the control of the laser unit 16 is designed so that the feed rate of the laser beam can be modulated in the manner described above.
  • the laser beam 12 generated by the laser module 16 is guided via optical fibers 18 to a recollimator 20, which is merely indicated in FIG.
  • the laser beam is converted into a parallel beam, with the beam diameter in the range of about 6mm.
  • This parallel beam is then guided via the light guide 18 to the laser head 8, via which a laser beam is then directed onto the workpiece to be machined, in the present case a connecting rod eye 1 of a connecting rod.
  • the focused laser beam is coupled at an angle of 30 ° to the horizontal in FIG.
  • the laser head 8 is designed with a Z-feed axis 22, via which the feed takes place in the longitudinal groove axis.
  • This feed axis is designed as a highly dynamic axis, with the extremely high accelerations at a high loop gain and a large jerk are feasible, so that an extremely precise control of the modulation is required.
  • the accelerations may be, for example, in the range between 1 to 2 g, the loop gain in the range of 10 n / min / mm (166.71 / s) and the jerk greater than 400 m / s 3 .
  • Swivel axis 24 executed, via which the laser head 8 about the Z-feed axis 22 is pivotable.
  • the laser unit further has an X-adjusting axis 26, via which the entire laser head 8 can be moved in the X-direction (radially to the connecting-rod eye 1). With such a device can also form sinusoidal fracture separation notches.
  • FIG. 11 shows the basic structure of the beam guidance in the laser head 8.
  • the optical fiber 18 coupled to the fiber laser (laser module 16) is shown.
  • the laser beam is converted in the recollimator 20 into a parallel beam with a diameter of approximately 6 mm. converted and then deflected by a deflecting mirror 28 by 90 ° in the direction of the Pleuelaugenachse.
  • the deflected laser beam 12 is then focused on the Pleuelaugenwandung via an optical system with a focal length of, for example, 100mm, wherein an alignment to Pleuelcommunswandung via a further deflection mirror 32, which is employed in the illustrated embodiment at an angle of 60 ° to the horizontal, so that the Laser beam resulting in a coupling angle of 30 ° to the horizontal or in an angle of attack of 60 ° to the incident on the deflection mirror 32 vertical part of the laser beam 12 (deflection 60 °) impinges on the Pleuelindividuswandung.
  • the laser beam exits via a nozzle 34 and is focused so that the laser spot is located approximately 3 mm in front of the exit plane of the nozzle 34.
  • a protective glass 34 is provided in the beam path between the nozzle 34 and deflecting mirror 32.
  • the pivot axis 24 can also be seen; in this case, the laser head 8 is rotatably mounted via a rotary bearing 38 and can be pivoted about the Z-feed axis 22 via a motor, not shown, so that practically every peripheral wall area of the connecting rod is pivoted is reachable.
  • a fracture separation notch 4 can be formed, in which the notch sections 6 are spaced in 1/1 Omm range, preferably in the range of 0.1 to Have 0.3mm. It was found that even when using a laser with a power of only 30 watts, a highly effective perforated fracture separation notch 4 can be formed.
  • the laser type, the pulse rate, the pulse duration, the workpiece material and / or the laser power selected so that the distance between the notched portions is substantially greater than the notch spacing, which is calculated from the feed rate of the laser beam and / or the workpiece and the pulse rate of the laser would result.
  • the feed modulation described also allows the formation of oblique laser notches for runways, as they occur for example in ball or roller guides.
  • the feed rate during laser processing in response to the workpiece geometry and / or periodically modulated.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Laser Beam Processing (AREA)
  • External Artificial Organs (AREA)

Abstract

L'invention concerne un procédé pour séparer des pièces (1) par rupture et une pièce fabriquée selon un tel procédé. Selon l'invention, le type de laser, le taux d'impulsions, la durée d'impulsion, le matériau des pièces et/ou la puissance du laser sont sélectionnés de telle manière que la distance des sections d'entaille (6) soit essentiellement plus grande que la distance d'entaille (K) qui résulterait par calcul de la vitesse d'avancement (V) du faisceau laser (12) et/ou de la pièce (1) et du taux d'impulsions du laser. La modulation d'avancement décrite permet également la formation d'entailles au laser obliques pour des transporteurs à rouleaux, telles qu'elles se présentent par exemple dans des glissières à billes ou glissières à galets. Selon l'invention, la vitesse d'avancement est modulée en fonction de la géométrie de la pièce et/ou périodiquement pendant le traitement au laser.
PCT/EP2011/055384 2010-04-06 2011-04-06 Procédé pour séparer des pièces par rupture, pièce et unité laser WO2011124627A1 (fr)

Priority Applications (13)

Application Number Priority Date Filing Date Title
BR112012025493A BR112012025493A2 (pt) 2010-04-06 2011-04-06 processo para separação por ruptura de peças de trabalho, peça de trabalho e unidade de laser
EP11719776A EP2555904A1 (fr) 2010-04-06 2011-04-06 Procédé pour séparer des pièces par rupture, pièce et unité laser
CN201180023093.4A CN102939182B (zh) 2010-04-06 2011-04-06 用于断离工件的方法和激光装置
KR1020127029079A KR101609654B1 (ko) 2010-04-06 2011-04-06 작업물을 파괴 분할하는 방법, 작업물 및 레이저 유닛
MX2012011690A MX2012011690A (es) 2010-04-06 2011-04-06 Metodo para dividir mediante fractura piezas de trabajo, pieza de trabajo y unidad laser.
US14/110,023 US20140090515A1 (en) 2011-04-06 2012-04-10 Method for Fracture Splitting Workpieces, Workpiece, and Laser Unit
BR112013025805A BR112013025805A2 (pt) 2011-04-06 2012-04-10 processo para separação por ruptura de peças a trabalhar, peça a trabalhar e unidade de laser
CN201280017478.4A CN103648707B (zh) 2011-04-06 2012-04-10 用于断裂分割工件的方法、工件和激光器单元
JP2014503178A JP6071996B2 (ja) 2011-04-06 2012-04-10 ワークピースを破断分割するための方法、ワークピース及びレーザー装置
MX2013011618A MX2013011618A (es) 2010-04-06 2012-04-10 Metodo para dividir mediante fractura piezas de trabajo, pieza de trabajo y unidad laser.
KR1020137029344A KR101609657B1 (ko) 2011-04-06 2012-04-10 작업물을 파괴 분할하기 위한 방법, 작업물 및 레이저 유닛
EP12714675.1A EP2694242A1 (fr) 2011-04-06 2012-04-10 Procédé destiné à séparer des pièces par rupture, pièce et unité laser
PCT/EP2012/056480 WO2012136858A1 (fr) 2011-04-06 2012-04-10 Procédé destiné à séparer des pièces par rupture, pièce et unité laser

Applications Claiming Priority (2)

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JP2015516888A (ja) * 2012-03-12 2015-06-18 マウザー‐ヴェルケ オベルンドルフ マシーネンバウ ゲーエムベーハーＭａｕｓｅｒ−Ｗｅｒｋｅ Ｏｂｅｒｎｄｏｒｆ Ｍａｓｃｈｉｎｅｎｂａｕ ＧｍｂＨ ワークピースの破断分割のための方法及び装置
WO2016124656A1 (fr) * 2015-02-03 2016-08-11 Mauser-Werke Oberndorf Maschinenbau Gmbh Unité de traitement laser

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DE102011118737A1 (de) * 2011-11-17 2013-05-23 Alfing Kessler Sondermaschinen Gmbh Laser-Kerbmaschine
DE102015106956A1 (de) 2014-09-29 2016-03-31 Mauser-Werke Oberndorf Maschinenbau Gmbh Verfahren zum Bruchtrennen von Werkstücken und Werkstückrohling

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EP0924440A2 (fr) * 1997-11-21 1999-06-23 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Bielle forgée en acier au carbone pour moteurs à pistons avec chapeaux de palier séparés par rupture
US20050160597A1 (en) * 2003-11-12 2005-07-28 Hiroichi Hase Method of forming fracture start portion of ductile metal part and fracture start portion forming device
DE102007053814A1 (de) * 2007-11-12 2009-05-14 Alfing Kessler Sondermaschinen Gmbh Werkzeugmaschine zur Bearbeitung von Pleuelstangen
US20090242521A1 (en) * 2008-03-31 2009-10-01 Electro Scientific Industries, Inc. On-the-fly manipulation of spot size and cutting speed for real-time control of trench depth and width in laser operations

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Publication number Priority date Publication date Assignee Title
JP2015516888A (ja) * 2012-03-12 2015-06-18 マウザー‐ヴェルケ オベルンドルフ マシーネンバウ ゲーエムベーハーＭａｕｓｅｒ−Ｗｅｒｋｅ Ｏｂｅｒｎｄｏｒｆ Ｍａｓｃｈｉｎｅｎｂａｕ ＧｍｂＨ ワークピースの破断分割のための方法及び装置
WO2016124656A1 (fr) * 2015-02-03 2016-08-11 Mauser-Werke Oberndorf Maschinenbau Gmbh Unité de traitement laser

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KR101609654B1 (ko) 2016-04-06
EP2555904A1 (fr) 2013-02-13
DE102010014085B4 (de) 2016-02-18
KR20130055592A (ko) 2013-05-28
WO2011124627A9 (fr) 2012-03-29
DE102023104504A1 (de) 2023-06-01
CN102939182A (zh) 2013-02-20
CN102939182B (zh) 2016-06-29
MX2013011618A (es) 2017-02-16
BR112012025493A2 (pt) 2016-06-21
DE102010014085A1 (de) 2011-10-06
MX2012011690A (es) 2013-02-21

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