EP2908973A2 - Outil vibrant, procédé de construction d'outil - Google Patents

Outil vibrant, procédé de construction d'outil

Info

Publication number
EP2908973A2
EP2908973A2 EP13780352.4A EP13780352A EP2908973A2 EP 2908973 A2 EP2908973 A2 EP 2908973A2 EP 13780352 A EP13780352 A EP 13780352A EP 2908973 A2 EP2908973 A2 EP 2908973A2
Authority
EP
European Patent Office
Prior art keywords
tool
workpiece
parameters
area
machine
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.)
Withdrawn
Application number
EP13780352.4A
Other languages
German (de)
English (en)
Inventor
Jens Ketelaer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sauer Ultrasonic GmbH
Original Assignee
Sauer Ultrasonic 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
Application filed by Sauer Ultrasonic GmbH filed Critical Sauer Ultrasonic GmbH
Publication of EP2908973A2 publication Critical patent/EP2908973A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B37/00—Boring by making use of ultrasonic energy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/04—Drills for trepanning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
    • B24B1/04—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes subjecting the grinding or polishing tools, the abrading or polishing medium or work to vibration, e.g. grinding with ultrasonic frequency
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/18—Wheels of special form

Definitions

  • the invention relates to a vibrating tool and a method for tool design.
  • Figure 5 shows schematically a known vibrating tool. It is a drill.
  • the upper side faces the workpiece, the lower side faces the drive.
  • a screw through the hole in the bottom center of the tool is rigidly connected to the drive.
  • the drive can rotate around the vertical axis.
  • a vibrating drive is provided, which applies the tool in use with a vibration.
  • the vibration can be parallel to the axis of rotation, ie
  • Nri ' 1 "ui, izu tone' to make correspondingly It has been shown;. That the Obereinstiitmung between reality and Theoretical he is unsatisfactory.
  • the object of the invention is to provide a vibrating
  • Invention to provide a method of tool design, which provides reliable predictions for the optimization of desired parameters, in particular the vibration amplitude.
  • Properties of the tool in particular magnification of the oscillation amplitude, can be varied.
  • the inside length of the tool (axial distance
  • Bottom of the transverse plate of the tool to the attachment may be outside a range whose lower limit is 25 mm and / or its upper limit is 45 mm, and / or the ratio of inner length to outer diameter may be outside a range whose Lower limit is 0.45 or 0.35 and / or its upper limit is 0.8 or 0.9 or 1.1. This dimensioning is particularly useful with drills.
  • the transverse plate of a drill can be a radial over the
  • a tool as above for i b ierenden machining a workpiece in a processing machine has in a workpiece facing area. ⁇ 12 ⁇ one
  • a first transverse dimension which is less than 2 mm, preferably less than 1.2 mm
  • the machining surface may be circular and the tool cylinder may be cup-shaped hollow cylindrical, the nominal diameter of the tool may be in the range between 15 and 150 mm, and the tool may be a drill or a grinding wheel.
  • Wall thickness can but need not be constant.
  • the tool when the tool is a grinding wheel, includes in the section parallel to the axis, the outer surface at least partially, in particular preferably at least in the region axially immediately behind the working surface, with the axis a first angle, which is at least 10 ° or at least 15 °, and may be less than 60 ° or less than 50 °, and / or the inner surface has a convex (inwardly curved) portion which may or may not circulate around the inner circumference of the inner surface.
  • the tool is for paraxial vibration
  • the Anreur.gs requenz may be in the range of a resonant frequency fO.
  • that can Tool be designed for continuous drive, in particular rotary drive around the axis of rotation, which may also be the vibration axis, along which translational
  • a method for tool design has the
  • Parameters of tool design in particular first and / or other parameters, and analyzing the modified construction with the Fi i a-element method ⁇ "FEM" ⁇ with respect to the third parameters, and storing the changed parameters and the result of the analysis Design can be FEM-analyzed to have corresponding comparison values for changed results
  • the first parameters can have geometric parameters of the tool, eg the nominal diameter
  • the third parameters can be dynamic parameters for a given or variable dynamic excitation of the tool including one or more of the following parameters: Schw: gsamplitude at one or more excitation frequencies or ranges thereof, resonant frequency or ranges thereof, oscillation mode, upper oscillatory behavior.
  • the method can be applied iteratively in such a way that, in particular, according to the analysis result, a tool design with changed parameters is taken as the new initial tool design.
  • FIG. 1 shows schematically features of the invention
  • Figure 2 shows examples of drills
  • FIG. 3 shows examples of grinding wheels
  • FIG. 4 shows the use of the tool in a machine
  • Figure la shows a perspective view schematically
  • Tool 10 which is a vibrating drill in use »Figure 1b shows a cross section to it. 13 is the
  • Machining surface ie the surface that is ultimately engaged with the workpiece to be machined. 12 is a total of the workpiece facing portion of the
  • Machine-side drive can be used. 15 is a Querpiatte, from which the further processing of the further components of the further components of the further components of the further components of the further components of the further components.
  • Tool structure extends towards the workpiece. It can, but does not have to be flat and / or formed with a constant thickness in the axial direction.
  • the entire tool can be cup-shaped. 14 denotes the wall of the cup. 19 symbolizes an optionally existing symmetry axis, which can also be an axis of rotation of the tool, along which the vibration can also take place.
  • the tool beyond the transverse plate 15 is composed of a carrier 14b and the attached thereto, the workpiece facing abrasive attachment 14a.
  • the carrier 14b is made of suitable. Material made, such as metal or ceramic.
  • the Schleifaufsa za 14a is a cured mixture of one hand binder and the other
  • the abrasive may be or have diamond grains.
  • the division into abrasive attachment 14a and Carrier 14b is schematic only in FIG. The other figures do not show them, although they can be present there. the
  • the abrasive attachment 14a itself can in axial
  • Direction have a certain dimension, which may be 1 mm or more or 3 mm or more and / or less than 5 mm and / or less than 10 mm. Otherwise apply
  • a characteristic of the considered tools is that the inner length li of the tool (axial distance between the working surface 13 and the inner surface ("bottom") of the transverse plate 15 of the tool on the
  • Fixing may be outside a range whose lower limit is 25 mm and / or whose upper limit is 45 mm, and / or the ratio ⁇ 2 of inner length li to nominal diameter dn may be outside a range whose lower limit is 0.45 or 0, Is 35 and / or its upper limit is 0.8 or 0, 9 or 1.1.
  • the transverse plate 15 can radially over the
  • the projection 17 may rotate around the circumference of the drill, be rotationally symmetrical and may be formed by the transverse plate 15 having a circular outline with a diameter dg which is larger than the outer diameter da of the hollow cylindrical workpiece-side region 12.
  • the supernatant can be a dimension in radial
  • Edge region of the transverse plate more chamfered or rounded than is the case with known tools.
  • Fig. 2 shows this.
  • the chamfer height in the axial direction or the radius of curvature may be at least 30%, preferably at least 50% or at least the thickness of
  • the upper limit may be at the
  • the working surface 13 may have a transverse dimension Q which is smaller than 2 mm, preferably smaller than 1.2 mm.
  • the carrier 14b is closed cylindrical and preferably closed circular cylindrical and having in sections perpendicular to the axis 13 of constant cross-section.
  • the transverse dimension Q and the diameter can be uniform as well as on certain areas.
  • the design can be such that the condition for the
  • Transverse dimension applies in any case for the processing surface 13.
  • it can also be placed in a specific area above it, up to 5mm or 3mm from the working area
  • Cutting plane include an angle ⁇ with the axis 19, which may be> 0 ° and preferably> 10 ° or> 15 °, and may be ⁇ 60 ° or ⁇ 50 °.
  • the angle ⁇ or the surface forming it is preferably also rotationally symmetrical with respect to the axis 19. Also, 'this
  • the convex portion 31 may be a concavity in the cup interior, as can be seen in the sectional images of Figures 3a and 3b.
  • the concavity can ring around the circumference of the inner wall 33 and
  • the apex of the convex portion 31 may be in a range of 40% to 90% of the inner length li. It may increase by at least 5% or at least 10% of the inner length Ii (height) over a connecting line of adjacent concave Be. , 5 just.
  • I i inside length. It is the height of
  • La outer length. It is the total height of the tool in the direction of the axis 19, so in section of the
  • the inferior limit of Q may be 0.4 mm or 0.5 mm.
  • the upper limit of ⁇ 2 can be 0.5% or 0.7%.
  • Tools with optimized properties, in particular oscillation amplitude, can have dimensions which correspond to the above table and / or the information in FIGS. 2 and 3, in each case + 2% or + 1% or + 0.5% tolerance.
  • an initial tool design is input in a data processable form and then analyzed by means of an FEM method, then varied and re-analyzed.
  • '> my first form become; ⁇ M i construction or the varied parameter for this stored together with analysis results.
  • the procedure can be more '. be repeated with different changes, in particular iteratively ', by the result of a first execution of the input, a second
  • the third parameters may be dynamic parameters, in particular oscillation amplitude and / or
  • Resonant frequency and / or vibration mode transversal, axial
  • / or characteristics of upper vibration They can become known or given dynamic
  • Parameter may be variable
  • the dynamic excitation can be caused by a suitable actuator. It may, for example, be a piezo actuator.
  • the parameters to be changed can be automatically selectable, both in terms of quality of the parameter itself and its direction of change. But you can also enter specifications
  • FEM is used to analyze a specific (possibly already modified) construction and, in particular, to determine its third parameter. At least in this regard
  • Results ie behavior of the third parameter (s)
  • design parameters or changed parameters
  • FIG. 4 shows schematically the manner of use of a
  • the tool 10 itself is by means of a
  • Output end 43 a of an actuator 43 is fixed, the other end in turn to a stationary
  • Construct member 44 is attached. This in turn can with the only shown schematically recording 45 a Machine tool can be connected. It can be around here
  • Standard couplings act, such as KSK couplings.
  • Energy supply device that manages without slipping contacts. 47 is the receiver-side component that inductively receives energy, forms it appropriately, and then connects the actuator 43 to the actuator 43 via non-connections
  • Workpiece table 46 Workpiece table 46. Workpiece table 46 and tools
  • the tool itself can not be reversibly driven by rotation in the
  • Coordinate system of Figure 4 so around the z-axis - 45 is then preferably a rotating machine spindle, which is their, - ⁇ KS rotatably mounted on a fixed receptacle of the machine frame and is driven from there.
  • the actuator 43 preferably causes a reversing
  • Relative movement on the one hand has the reversing and amplitude-optimized oscillation in the z-direction, and on the other hand, the continuous rotational movement of the
  • Output end and a grinding wheel are attached, as shown in Figure 3.
  • the tools described are moved while vibrating in addition to continuous operation.
  • the drills rotate around the respective axes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)

Abstract

L'invention concerne un outil vibrant (10) destiné à l'usinage vibratoire d'une pièce dans une machine d'usinage, comportant une zone côté machine (11) et une zone côté pièce (12) qui présente une surface d'usinage (13) destinée à être posée sur la pièce. La longueur intérieure (li) est située en dehors d'une plage de valeurs définie. La plaque transversale (15) peut présenter un débordement (17) ou des congés de raccordement ou chanfreins définis. Dans un procédé de construction d'outil, on analyse par la méthode des éléments finis une construction d'outil qui présente des paramètres modifiés en fonction de paramètres cibles.
EP13780352.4A 2012-10-22 2013-10-22 Outil vibrant, procédé de construction d'outil Withdrawn EP2908973A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012219232.8A DE102012219232A1 (de) 2012-10-22 2012-10-22 Vibrierendes Werkzeug, Verfahren zur Werkzeugkonstruktion
PCT/EP2013/072093 WO2014064116A2 (fr) 2012-10-22 2013-10-22 Outil vibrant, procédé de construction d'outil

Publications (1)

Publication Number Publication Date
EP2908973A2 true EP2908973A2 (fr) 2015-08-26

Family

ID=49484274

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13780352.4A Withdrawn EP2908973A2 (fr) 2012-10-22 2013-10-22 Outil vibrant, procédé de construction d'outil

Country Status (3)

Country Link
EP (1) EP2908973A2 (fr)
DE (1) DE102012219232A1 (fr)
WO (1) WO2014064116A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE541203C2 (sv) * 2017-08-09 2019-04-30 Jan Anders Forsell Hålsåg

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63267150A (ja) * 1987-04-22 1988-11-04 Chiyouonpa Kogyo Kk 超音波研削用カツプ砥石
FR2955510A1 (fr) * 2010-01-26 2011-07-29 Snecma Outil et procede de percage par ultrasons des materiaux en composite a matrice ceramique

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06339865A (ja) * 1992-02-28 1994-12-13 Nikon Corp 超音波研削用カップ砥石及びこれを用いた 超音波研削加工機
DE10162636A1 (de) * 2001-12-20 2003-07-03 Hilti Ag Ultraschallkernbohrkrone
DE102004031600B4 (de) * 2004-06-30 2006-04-20 Hilti Ag Werkzeug zur Bearbeitung eines mineralischen Untergrundes mit einem Ultraschall-Werkzeuggerät
DE102005038108A1 (de) * 2005-08-11 2007-02-15 Multi Orbital Systems Gmbh Vorrichtung und Verfahren zum Bearbeiten von Oberflächen
US7508116B2 (en) * 2005-09-07 2009-03-24 Panasonic Corporation Method and apparatus for vibration machining with two independent axes
US7687975B2 (en) * 2007-03-27 2010-03-30 Panasonic Corporation Vibration assisted machining system with stacked actuators

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63267150A (ja) * 1987-04-22 1988-11-04 Chiyouonpa Kogyo Kk 超音波研削用カツプ砥石
FR2955510A1 (fr) * 2010-01-26 2011-07-29 Snecma Outil et procede de percage par ultrasons des materiaux en composite a matrice ceramique

Also Published As

Publication number Publication date
DE102012219232A1 (de) 2014-04-24
WO2014064116A2 (fr) 2014-05-01
WO2014064116A3 (fr) 2014-10-23

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