EP0193547A1 - Alesoir a mouvement pendulaire - Google Patents

Alesoir a mouvement pendulaire

Info

Publication number
EP0193547A1
EP0193547A1 EP19850904114 EP85904114A EP0193547A1 EP 0193547 A1 EP0193547 A1 EP 0193547A1 EP 19850904114 EP19850904114 EP 19850904114 EP 85904114 A EP85904114 A EP 85904114A EP 0193547 A1 EP0193547 A1 EP 0193547A1
Authority
EP
European Patent Office
Prior art keywords
pendulum
guide
head
cutter head
boring bar
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Withdrawn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
EP19850904114
Other languages
German (de)
English (en)
Inventor
Rainer Wessely
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.)
KOYEMANN WERKZEUGE GmbH
Original Assignee
KOYEMANN WERKZEUGE 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 KOYEMANN WERKZEUGE GmbH filed Critical KOYEMANN WERKZEUGE GmbH
Publication of EP0193547A1 publication Critical patent/EP0193547A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B23D77/00—Reaming tools
    • B23D77/02—Reamers with inserted cutting edges
    • B23D77/04—Reamers with inserted cutting edges with cutting edges adjustable to different diameters along the whole cutting length
    • B23D77/048—Reamers with inserted cutting edges with cutting edges adjustable to different diameters along the whole cutting length by means of conical screw threads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/08—Chucks holding tools yieldably
    • 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
    • B23D2277/00—Reaming tools
    • B23D2277/20—Number of cutting edges
    • B23D2277/202—Two
    • 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
    • B23D2277/00—Reaming tools
    • B23D2277/46—Guiding pads

Definitions

  • the invention is based on a pendulum reamer, on the boring bar of which a cutter head with at least three cutting blades is held and guided on all sides.
  • a pendulum reamer of this type is known from the German patent 541 743.
  • the boring bar is rigidly connected to a cylindrical cage in which a cutter head carrying the cutting knives is arranged in a pendulum-supporting manner against elastic inserts.
  • the cutting blades of the cutter head come out through slots arranged on the circumference of the cage.
  • the cutter head is supported by a steel ball inside the cage to absorb the cutting pressure.
  • the cutter head is provided with a conical bearing surface on which the cutting knives can be adjusted parallel to the cone axis for the purpose of adjustment to another diameter.
  • the known pendulum reamer has the disadvantage that the cutter head and the cutting knife can only be removed from the cage after the cage bottom has been removed and that an exact guidance of the cutting knife is not possible. Because the knife head is supported by elastic intermediate layers. Another disadvantage is the fact that the cutter head can only swing out against the resistance of the elastic intermediate layer and this resistance is greater the greater the deviation of the cutter head axis from the boring bar axis. From DE-PS 664 304 a pendulum reamer is known in which the cutter head is guided transversely to the boring bar axis in a slot of the boring bar and a pair of knives at right angles to it are displaceably guided in a recess in the cutter head.
  • the present invention has for its object to provide a pendulum reamer, in which the cutter head is movably and reliably guided on all sides and is held on the boring bar in an easily replaceable manner.
  • This object is achieved in that at the free, hollow cylindrical end of the boring bar is provided with a central recess, perpendicular to the boring bar axis guide plate that the cutter head can be supported on this all-round parallel guide, which is composed of a a flat guide surface of the cutter head bearing against the outside of the guide plate and a guide surface of a guide head lying parallel to the inside of the guide plate connected to the cutter head via a short central neck, the length of the neck corresponding to the thickness of the guide plate and the diameter of the recess by the maximum pendulum play is greater than the diameter of the neck and that the guide head of the cutter head can be coupled to the boring bar in a rotationally fixed manner via a movable driving part.
  • the neck of the cutter head can be inserted into the recess in the guide plate via an open slot on the side.
  • a securing part must be provided which, after inserting the cutter head, at least partially encompasses its guide head and holds the cutter head with its neck in the region of the central recess.
  • the pendulum reamer according to the invention has the advantage that the cutter head is guided in a freely oscillating radial manner and the displacement resistance of the cutter head is the same and low in all directions, and that the guide surface loaded during reaming is relatively large and is as close as possible to the plane of the cutting knife, so that tilting of the cutter head and its cutting knife cannot occur.
  • An axially displaceable sleeve is used to secure the inserted cutter head, which sleeve can be pushed over the cutter head receptacle after inserting the cutter head and holds the guide head in the area of the central recess.
  • a centering cone is attached to the guide head, which cooperates with a cone ring arranged axially displaceably in the boring bar.
  • the distance between the centering cone and the cone ring in the operating position is finely adjustable, so that the maximum pendulum play can be set by adjusting this distance.
  • the conical ring is expediently fastened to the axially displaceable sleeve and the centering cone is screwed onto a threaded pin of the guide head.
  • a driver part is mounted within the boring bar, swinging around an axis perpendicular to the axis of the boring bar, the driver projections of which engage in a slot in the cutter head are parallel to the pendulum axis and parallel to the slot-like recess in the guide plate.
  • the cutting knives are radially adjustable in the cutter head using a central adjusting screw and can be locked in the set position using locking screws. Furthermore, channels are provided in the cutter head which supply the cutting knives with a cutting and / or cooling emulsion which is fed through a longitudinal bore in the boring bar, the driver part and the central adjusting screw.
  • Fig. 1 is a side view of the pendulum reamer according to the invention.
  • FIG. 2 is a view corresponding to FIG. 1, but with the sleeve pushed up
  • 3 is a bottom view of the pendulum reamer
  • FIG. 4 is an enlarged view, in particular the tool holder of the pendulum reamer when the sleeve is pushed up
  • FIG. 5 is a perspective view of the tool holder of the boring bar and the cutter head
  • FIG. 7 is a view of the cutter head along the section line VII-VII in Fig. 6,
  • FIG. 8 is a view corresponding to FIG. 4 of a second embodiment of the invention.
  • Fig. 9 is a view along the section line IX-IX in Fig. 8.
  • the pendulum reamer according to Figs. 1 to 7 has a boring bar 1, the free end 2 of which is provided with a tool holder 3, into which a cutter head 7 can be quickly replaced is.
  • the tool holder 3 is formed by a semi-cylindrical part 4, which connects continuously to a cylindrical part of the boring bar 1.
  • a circular guide plate 5 is arranged with a central recess 6,
  • the central recess 6 is open on one side via a slot 41, the width of which can be somewhat smaller than the diameter of the central recess 6.
  • This slot 41 runs perpendicular to the parting plane of the half cylinder 4.
  • the cutter head 7 is connected to a guide head 10 via a short central neck 9.
  • the diameter of the neck 9 is such that it can be inserted into the slot 41 of the guide plate 5, so that the cutter head 7 rests with its guide surface 8 on the outside of the guide plate 5 and the guide head 10 with its guide surface 8 parallel to the guide surface 8 40 rests on the inside of the guide plate 5.
  • the two sides of the guide plate 5 and also the guide surfaces 8 and 40 can NEN be coated with a friction reducing material.
  • the cutter head is held by the guide plate 5 in a freely oscillating manner.
  • a driver part 15 is used, which is mounted in a cylindrical cavity 19 of the boring bar 1 so as to pivot about an axis 18.
  • the pendulum axis 18 runs perpendicular to the boring bar axis and perpendicular to the parting plane of the hollow cylinder 4.
  • driving projections 37 are attached, which engage in a slot 36 of the guide head 10 of the cutter head 7. In this way, the cutter head 7 is guided on the guide plate 5 in a freely oscillating manner and is nonetheless coupled to the boring bar 1 in a rotationally fixed manner.
  • the driver part 15 is provided with an annular bead 20 which is arranged at the level of the pendulum axis 18 and is fitted with as little play as possible in the cylindrical cavity 19 of the drill rod 1.
  • a sleeve 22 is arranged axially displaceably on the boring bar 1 and is pushed over the tool holder 3 after inserting the cutter head 7. In this securing position, the lower edge of the sleeve 22 encompasses the lateral edge of the guide plate 5.
  • the tapered ring 17 is connected to the sleeve 22 and engages around the centering cone 16 of the cutter head 7 in the securing position.
  • the centering cone 16 is screwed onto a threaded pin 14 of the cutter head 7 so that it can be adjusted axially relative to the conical ring 17. In this way, the desired pendulum play can be set.
  • a ring 26 made of elastic material is arranged between the centering cone 16 and the guide head 10, as shown in FIG. 7.
  • the frictional forces acting between this ring 26 and the centering gel 16 prevent the centering cone from being inadvertently adjusted.
  • 5 shows, the conical ring 17 is screwed onto a half ring 21 at the lower end of the sleeve 22.
  • the cavities in the boring bar are dimensioned such that when sleeve 22 and cone ring 17 are pushed up, space 3 for receiving guide head 10 of cutter head 7 is completely free.
  • the cutting knives 11, 12 and 13 are guided in a radially movable manner in the carrier body 27 of the cutter head 7.
  • a central adjusting screw 30 is used for the radial adjustment of the cutting knives 11, 12 and 13, which acts with a cone 31 on correspondingly designed inclined surfaces of the cutting knives 11, 12 and 13.
  • the adjusting screw 30 has a hexagon socket, into which a socket wrench that extends through the threaded bore 29 can be inserted.
  • the recesses for receiving the cutting knives or the cutting support are open on the end face of the carrier body 27 and on the circumferential surface.
  • a cover 28 can be screwed onto the end face of the carrier body 27.
  • the cutting knives 11, 12 and 13 can be locked in their set position by means of the locking screws 35 shown in FIG. 5.
  • Smaller channels 33 are incorporated in the carrier body 27 of the cutter head 7, through which the cutting blades 11, 12 and 13 can be supplied with a cutting or cooling emulsion.
  • This cutting and cooling emulsion is fed through a bore 34 in the drill rod 1, a longitudinal bore in the driver part 15 and a bore 32 in the adjusting screw 30 to the channels 33.
  • the axially displaceable sleeve 22 can have a part which, in the securing position of the sleeve 22, lies in the direction of the slot 41 in front of the guide head 10.
  • the sleeve 22 can be locked in its securing position.
  • a ball 24, which is under the pressure of a spring 25 and which holds the sleeve 22 in the securing position (cf. FIG. 1), is used for this purpose. By pushing the ball 24 against the action of the spring 25, the sleeve 22 can be moved out of its securing position.
  • this securing function is performed by the conical ring 17 fastened to the sleeve 22, which in the securing position of the sleeve 22 lays at an adjustable distance around the centering cone 16 and thus also limits the pendulum play to an adjustable value.
  • a modified embodiment of the pendulum reamer according to the invention is shown, in which no slot 41 leading to the central recess 6 is provided for inserting the cutter head 7, but two sector-shaped, wing-like recesses 42.
  • the guide head 10 'of the cutter head 7 has corresponding sector-shaped wings 43, so that the cutter head 7 with its guide head 10 'can be inserted axially through the guide plate 5' and then rotated 90 ° into the working position.
  • the guide head 7 has a central pin 45, which can be inserted into a pivoting or cardanically suspended driver part 15 '.
  • this pin 45 there is a transverse slot which, after rotation of the cutter head 7 is aligned in the working position with holes which are arranged in the driver part 15 '.
  • a window 44 In the lower part of the boring bar 1 there is a window 44 through which a bolt 46 into the holes of the slave part 15 'and the transverse slot of the pin 45 can be used.
  • the lower driver part 15 ' is pivotally connected to the upper driver part 15 via an axis 47.
  • the axis 47 extends at right angles to the pendulum axis 18 of the upper driver part 15.
  • the centering cone 16 is arranged rigidly on the guide head 10 ', while the adjusting cone 17 is arranged axially adjustable and lockable in the boring bar 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling Tools (AREA)
  • Milling, Broaching, Filing, Reaming, And Others (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)

Abstract

Un alésoir comprend une tige de forage qui tient et fait avancer avec un mouvement pendulaire dans tous les sens une tête porte-lames avec au moins trois lames. Une plaque de guidage (5, 5') perpendiculaire à l'axe de la tige de forage et pourvue d'un évidement central (6) est agencée à l'extrémité libre, cylindrique et creuse de la tige de forage. Cette plaque de guidage (5, 5') soutient et guide dans tous les sens la tête porte-lames (7), étant parallèlement connectée à celle-ci. Cette connexion parallèle se fait par l'intermédiaire d'une surface plane de guidage (8) de la tête porte-lames (7) qui s'appuie sur le côté extérieur de la plaque de guidage (5, 5'), et d'une surface de guidage (40) parallèle à la première et s'appuyant sur le côté intérieur de la plaque de guidage (5, 5') d'une tête de guidage (10, 10') connectée à la tête porte-lames (7) par un collet court et central (9). La longueur du collet (9) correspond à l'épaisseur de la plaque de guidage (5, 5') et le diamètre de l'évidement (6) autour du jeu pendulaire est plus grand que le diamètre du collet (9). La tête de guidage (10, 10') de la tête porte-lames (7) peut être connectée à la tige de forage par une unité mobile d'entraînement (15, 15') de façon à empêcher la rotation de celle-ci. On obtient ainsi une tête porte-lames (7) susceptible d'être déplacée dans tous les sens, d'être aisément et fiablement guidée, connectée de façon facilement amovible à la tige de forage (1).
EP19850904114 1984-09-05 1985-08-24 Alesoir a mouvement pendulaire Withdrawn EP0193547A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3432615 1984-09-05
DE19843432615 DE3432615A1 (de) 1984-09-05 1984-09-05 Pendelreibahle

Publications (1)

Publication Number Publication Date
EP0193547A1 true EP0193547A1 (fr) 1986-09-10

Family

ID=6244694

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850904114 Withdrawn EP0193547A1 (fr) 1984-09-05 1985-08-24 Alesoir a mouvement pendulaire

Country Status (3)

Country Link
EP (1) EP0193547A1 (fr)
DE (1) DE3432615A1 (fr)
WO (1) WO1986001443A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202010002058U1 (de) 2010-02-08 2011-06-09 Johne & Co. Präzisionswerkzeuge GmbH, 46286 Werkzeug und Werkzeugkopf zum Bearbeiten von Bohrungen und ähnlichen Materialausnehmungen
DE102014105908B4 (de) * 2014-04-28 2020-06-25 Hartmetall-Werkzeugfabrik Paul Horn Gmbh Werkzeug zur spanenden Bearbeitung eines Werkstücks und Verfahren zur Herstellung eines Werkzeugs

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE541743C (de) * 1932-01-15 Richard Braun Umlaufendes Schneidwerkzeug mit eingesetzten Messern
US1484207A (en) * 1922-02-20 1924-02-19 Ernest P Campbell Adjustable cylinder reamer
US1823032A (en) * 1926-06-26 1931-09-15 Vlieg Gerard A De Tool holder
US1774701A (en) * 1928-01-18 1930-09-02 Frederick H Davenport Expanding reamer
US1883611A (en) * 1930-04-07 1932-10-18 Vlieg Gerard A De Tool holder
DE584814C (de) * 1931-01-16 1933-09-25 Fritz Werner Akt Ges Kombiniertes Bohr- und Reibwerkzeug
US2018674A (en) * 1932-03-09 1935-10-29 Hutto Engineering Company Inc Metal cutting or reaming device
DE664304C (de) * 1933-03-19 1938-08-24 Hans F Puchstein In zwei aufeinander senkrecht stehenden Koordinatenebenen selbsttaetig einstellbare Reibahle
GB1035120A (en) * 1964-06-12 1966-07-06 Herbert Ltd A Adjustable reamer
FR2313166A1 (fr) * 1975-06-04 1976-12-31 Janin Andre Perfectionnements aux outils de coupe travaillant en rotation

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8601443A1 *

Also Published As

Publication number Publication date
WO1986001443A1 (fr) 1986-03-13
DE3432615C2 (fr) 1988-01-14
DE3432615A1 (de) 1986-03-13

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Inventor name: WESSELY, RAINER