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WO1992009391A1 - Porte-outil pour tours a commande numerique - Google Patents

Porte-outil pour tours a commande numerique Download PDF

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Publication number
WO1992009391A1
WO1992009391A1 PCT/EP1991/002275 EP9102275W WO9209391A1 WO 1992009391 A1 WO1992009391 A1 WO 1992009391A1 EP 9102275 W EP9102275 W EP 9102275W WO 9209391 A1 WO9209391 A1 WO 9209391A1
Authority
WO
WIPO (PCT)
Prior art keywords
holder
tool
bore
basic
longitudinal axis
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.)
Ceased
Application number
PCT/EP1991/002275
Other languages
German (de)
English (en)
Inventor
Walter Mehl
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of WO1992009391A1 publication Critical patent/WO1992009391A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
    • B23B29/04—Tool holders for a single cutting tool

Definitions

  • the invention relates to a tool holder for NC lathes or CNC lathes, with the generic features mentioned in the preamble of claim 1.
  • Such tool holders are known and are manufactured and sold, for example, by WNT NC-Technik GmbH & Co.G, Untergassen 5, Sulzberg (brochure 4/89 page 76).
  • Tool holders of this type are required in order, for example, to hold turning, piercing and / or boring tools securely on a support which is arranged on the machine frame so as to be movable in two mutually perpendicular coordinate directions for the purpose of machining a rotating workpiece. Since, depending on the type of machining, it may be desirable to select the tool arrangement with respect to the workpiece such that the tool sees the spindle or the workpiece rotatably attached to it "left-turning""" or “right-turning” , such tool holders should of course be equally suitable for both directions of rotation.
  • the tool holder corresponding to the prior art are designed so that for the different possible directions of rotation of the workpiece, seen from the support, different tool holders are also required.
  • Adjustment options are available by means of which the vertical position of the tool can be adjusted, but it is not simply possible to rotate the tool holder by 180 ° as it were and to reclamp the tool with the required orientation, since then the support against the torque is not is ensured with sufficient certainty.
  • the clamping screws can be screwed by means of which the change holder is attached one end face of the basic holder can be pressed on, these tensioning screws being able to pass through a radial slot of the basic holder which is open towards the contact surface and is arranged opening into the through hole, the clear width of this slot being about 1/3 to 1 / 2 of the clear diameter of the anchoring hole, a very secure fixation of the change holder in the basic holder is possible in a simple manner, the elements required for fixation, namely the radial through hole of the Basic holder and the threaded anchor bolt can be produced with the simplest of means.
  • the tool holder according to the invention is therefore very inexpensive to manufacture. Since the basic holder is provided in an essentially flat, at least sectionally flat end face against which the interchangeable holder only has to be pressed in order to fix it, that is to say, therefore, a specific design of the basic holder in terms of adaptation to a special interchangeable holder is not required the base holder of the tool holder according to the invention, as it were, “only once” is required in order to be usable in combination with different exchangeable holders. Warehousing is thus considerably simplified since change holders only have to be kept in stock in accordance with the types of tools used, but all of which can be combined with a single basic holder.
  • the basic holder is provided with a central bore which is arranged coaxially with the axis of its fastening shaft. Corresponding holders can then be inserted into this bore without further ado, which are expediently provided with a radial flange, which in turn is provided with bores through which tensioning screws can be passed, which can be screwed into the front thread of the basic holder, so that such exchangeable holders can also be fastened to the basic holder in a conventional manner.
  • such interchangeable holders for tools extending in the axial direction are also held on the basic holder by means of an anchoring bolt passing through a radial bore of the basic holder.
  • the tool holder is provided with connection bores for coolant at a lateral distance from the central axis of its fastening shaft or from a central bore, if any, for receiving axial tool holders the tool holder according to the invention is possible without further ado since the space required for the anchoring bolts and screws is relatively small and at the same time occupies only a narrow strip in the region of a radial plane of the tool holder containing the central shaft axis.
  • the tool holder is also provided with coolant channels, each of which has a mouth opening that is open toward the tool and through which coolant can be sprayed onto the tool, these mouth openings being arranged in this way are that, depending on the direction of rotation - left or right - with which the workpiece is driven in rotation and accordingly the tool is arranged with 180 ° different orientations on the tool holder, one or the other opening for the Spraying coolant onto the tool while others are using it expediently is closed by means of a suitable stopper.
  • the tool holder can also be fixed with an orientation on the tool holder or support that deviates from a "horizontal" orientation of the tool with respect to the axis of rotation of the workpiece.
  • the tool holder according to the invention is inexpensive to manufacture due to its geometrically simple design with correspondingly simple operations and tools.
  • FIG. 1 shows a tool holder according to the invention in its position of use on a tool carrier designed as a turret;
  • FIG. 2 shows the basic holder of the tool holder according to FIG. 1 in a representation corresponding to the perspective of the representation of FIG. 1 and Fig. 3, the tool holder according to Figure 1, in section along its plane of symmetry.
  • the tool holder shown in FIG. 1, to the details of which is expressly referred to, is designated in its entirety by 10 and is shown in its position of use on a tool holder 11 in which it is used for the external turning of a workpiece (not shown), which can be driven in a rapidly rotating manner about an axis 12 which runs parallel to a central longitudinal axis 13 of the tool holder 10.
  • a tool holder 11 in which it is used for the external turning of a workpiece (not shown), which can be driven in a rapidly rotating manner about an axis 12 which runs parallel to a central longitudinal axis 13 of the tool holder 10.
  • the tool holder 10 is used in the context of a CNC-controlled lathe, with the tool holder 10 shown as a carrier for a radial tool, as well as other tool holders which are suitable tools for other types of processing.
  • the tool holder 10 shown is accordingly designed for a transverse reception of the turning tool, which is denoted overall by 14, which, according to the arrangement shown, is designed for "clockwise rotation” machining of the workpiece, i.e. machining in which the workpiece rotates in the direction of rotation represented by the arrow 16, seen from the drive side of the tool spindle, ie clockwise.
  • the tool holder 10 consists of a base holder, designated overall by 17, which, with reference to FIG. the details of which are also referred to, to be explained in more detail below, and a change holder 18 carrying the tool 14, which, if necessary, can be detachably fixed to the base holder 17 in an exchangeable manner by another, analog change holder 18.
  • the basic holder 17 is, according to its basic shape, designed as a solid, cylindrical, block-shaped part which is provided by means of a standard shaft 19 which extends along the central axis 13 of the basic holder 17 and which has straight teeth running at right angles to the central axis 13 on the tool holder 11 can be fastened in a manner known per se.
  • the basic holder 17 which in a typical dimensioning has a radial diameter between 50 and 60 mm and an axial thickness between 25 mm and 35 mm, is provided with a continuous, flat, flattened areas 21 and 22 that run between two mutually parallel, flat of the outer part of the basic holder body 23, provided with a bore 24, the central axis 26 of which runs at right angles to the central longitudinal axis 13 of the basic holder and intersects it in the center of the basic holder 17, the central bore axis 26 in turn being perpendicular to the central one Longitudinal axis 13 extends transverse central plane 27 of the base holder body 23 and the bore 24 has a diameter which corresponds to approximately 1/3 of the axial thickness of the base holder body 23.
  • the end face 28 of the base holder body 23 facing the changeable holder 18 of the tool holder 10 is designed as a flat surface in the special embodiment shown.
  • a serration oriented parallel to the central longitudinal axis 26 of the bore 24 can also be provided on this end face, with which a corresponding toothing of the interchangeable holder 18 can be engaged in order to securely fix these two holder elements 17 and 18 against lateral displacements to achieve.
  • the basic holder 17 is provided on its side facing the interchangeable holder 18 with a slot 29 which extends between the bore 24 and the free outer side of the basic holder 17 and extends over its entire axial length or thickness of the basic holder body 23, which is symmetrical with respect to the central longitudinal axis 26 of the bore 24 and the central longitudinal axis 13 of the basic holder 17 containing the longitudinal center plane thereof is formed, to which, as seen in the illustration in FIG. 1, the interchangeable holder 18 is also symmetrical.
  • the interchangeable holder 18 which has the overall shape of a solid U-profile piece that is open towards the outside as seen in the direction of the central longitudinal axis 13, is in the region of its longitudinal legs 31 and 32, which are connected to a solid yoke part 33 of the interchangeable holder 18 , provided with holes 36 and 37, the central axes 34 and 38, as seen in the illustrated position of use, in which the interchangeable holder with its outer yoke surface is pressed against the end face 28 of the base holder 17, run parallel to the central longitudinal axis 13 of the tool holder 10.
  • In these bores 36 and 37 as can be seen in detail in FIG.
  • an anchoring screw 48 or 49 with either one on an inner shoulder 51 of the respective bore 36 or 37 or screw head 52 which can be supported on the outer free end face of the respective longitudinal leg 31 or 32, the threaded bolts 53 of which can be screwed into a thread 54 or 56 of an anchoring bolt 39 which is slidably arranged in the radial bore 24 of the basic holder 17 , ie has a diameter which is slightly smaller than the clear diameter of this bore 24, as is necessary for the sliding bolt 39 to move freely in the bore 24, and forms a tie rod member in connection with the anchoring screws 48 and 49 , by means of which the interchangeable holder 18 can be firmly anchored to the basic holder 17.
  • the interchangeable holder 18 is for adjusting a desired displacement relative to a horizontal one containing the axis of rotation 12 of the workpiece Level easily adjustable.
  • a set screw provided in this regard on the interchangeable holder 18, not shown, can be screwed with the one shown in FIG Slit 41 can be realized with a radial flange in engagement.
  • threaded holes 44 designed as blind bores can also be accommodated in this area "outside" of the anchoring device, into which screws suitable for anchoring other, for example conventionally designed, exchangeable brackets can also be screwed, so that the basic holder 17 can also be screwed in Combination with such is usable. If this type of fastening is used, it is expedient if the openings on the quick-change holder, through which the retaining screws pass, are designed as elongated holes in order to provide sufficient adjustment parallel to the central longitudinal axis 26 of the bore 24 of the base holder 17 to reach.
  • the interchangeable holder 18 is also formed symmetrically with respect to its longitudinal center plane running between the longitudinal legs 31 and 32 and parallel to these.
  • the tool holder 10 is also suitable for a user. tongue with left-turning, ie usable in the direction of arrow 16 'oriented drive of the workpiece, in which case the turning tool 14 must be "turned over”, ie with the cutting edge 46 pointing "downward” against the upper longitudinal leg as shown in FIG 31 of the change holder 18 must be clamped.
  • the interchangeable holder 18 is provided on both longitudinal legs 31 and 32 with stepped bores for receiving tensioning screws and with retaining screws for the terminal strip 47, which, between left-hand turning processing, the longitudinal leg 32, as shown, and the tool 14 is arranged.
  • the basic holder 17 is also provided with a central blind bore 57, which is introduced from its end face 28 and coaxial with its central longitudinal axis 13 and whose diameter is between 1/3 and 2/5 of the diameter of the - Flange-shaped - basic holder body 23.
  • This blind bore 27 can be used for a well-centered mounting of collets for drilling tools or piercing tools, so that the basic holder 17 is also universally used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)

Abstract

Dans des tours à commande numérique par calculateur capables d'usiner une pièce en rotation avec différents outils agencés chacun au moyen d'un porte-outil sur un support mobile sur un chariot en croix, chaque porte-outil se compose d'un organe de retenue de base susceptible d'être fixé sur le support d'outil et d'un organe échangeable de retenue susceptible d'être fixé sur l'organe de retenue de base et qui reçoit un outil correspondant. L'organe de retenue de base (17) peut être fixé par une broche de fixation (19) sur le support d'outils (11) et se présente comme un corps (23) en forme de bride pourvu d'un passage (24) qui le traverse radialement et dont l'axe longitudinal central (26) forme un angle droit avec l'axe longitudinal central (13) de l'organe de retenue de base (17), traversant le centre de ce dernier. L'organe de retenue de base est pourvu d'une fente (29) ouverte du côté de l'organe échangeable de retenue (18) qui s'étend sur toute la longueur du passage (24) et s'ouvre dans celui-ci. Un boulon d'ancrage (39) dont le diamètre correspond au diamètre du passage (24) peut être inséré dans le passage (24). Le boulon d'ancrage (39) est pourvu de passages filetés parallèles, perpendiculaires à son axe central (26), dans lesquels peuvent être vissées des vis de tension qui passent entre les faces de la fente (29) et qui permettent de fixer l'organe échangeable de retenue (18) sur l'organe de retenue de base (17).
PCT/EP1991/002275 1990-12-03 1991-12-02 Porte-outil pour tours a commande numerique Ceased WO1992009391A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4038450.0 1990-12-03
DE19904038450 DE4038450A1 (de) 1990-12-03 1990-12-03 Werkzeughalter fuer nc-drehmaschinen

Publications (1)

Publication Number Publication Date
WO1992009391A1 true WO1992009391A1 (fr) 1992-06-11

Family

ID=6419441

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1991/002275 Ceased WO1992009391A1 (fr) 1990-12-03 1991-12-02 Porte-outil pour tours a commande numerique

Country Status (2)

Country Link
DE (1) DE4038450A1 (fr)
WO (1) WO1992009391A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4414047A1 (de) * 1994-04-22 1995-10-26 Walter Mehl Werkzeughalter

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4227268A1 (de) * 1992-08-18 1994-02-24 Heidelberger Druckmasch Ag Werkzeughalter

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4080854A (en) * 1976-08-27 1978-03-28 Hardinge Brothers, Inc. Adjustable tool holder

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4080854A (en) * 1976-08-27 1978-03-28 Hardinge Brothers, Inc. Adjustable tool holder

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Katalog von der Firma EWS Werkzeugfabrik G. und K. W{gele GmbH & Co. KG Seite 1.12 in der Anmeldung erw{hnt *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4414047A1 (de) * 1994-04-22 1995-10-26 Walter Mehl Werkzeughalter
WO1995029027A3 (fr) * 1994-04-22 1995-11-30 Walter Mehl Porte-outils comportant des tirants de raccordement agissant sur le support de base et le support interchangeable et pouvant etre axialement serres

Also Published As

Publication number Publication date
DE4038450A1 (de) 1992-06-04

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