US3531843A - Cutter head,particularly for gear-cutting machine - Google Patents

Cutter head,particularly for gear-cutting machine Download PDF

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Publication number
US3531843A
US3531843A US781775A US3531843DA US3531843A US 3531843 A US3531843 A US 3531843A US 781775 A US781775 A US 781775A US 3531843D A US3531843D A US 3531843DA US 3531843 A US3531843 A US 3531843A
Authority
US
United States
Prior art keywords
cutter head
hub
ribs
axis
bore
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.)
Expired - Lifetime
Application number
US781775A
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English (en)
Inventor
Erich Kotthaus
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.)
Rheinmetall Air Defence AG
Original Assignee
Werkzeugmaschinenfabrik Oerlikon Buhrle AG
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 Werkzeugmaschinenfabrik Oerlikon Buhrle AG filed Critical Werkzeugmaschinenfabrik Oerlikon Buhrle AG
Application granted granted Critical
Publication of US3531843A publication Critical patent/US3531843A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23F—MAKING GEARS OR TOOTHED RACKS
    • B23F23/00—Accessories or equipment combined with or arranged in, or specially designed to form part of, gear-cutting machines
    • B23F23/12—Other devices, e.g. tool holders; Checking devices for controlling workpieces in machines for manufacturing gear teeth
    • B23F23/1206—Tool mountings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23F—MAKING GEARS OR TOOTHED RACKS
    • B23F21/00—Tools specially adapted for use in machines for manufacturing gear teeth
    • B23F21/12—Milling tools
    • B23F21/22—Face-mills for longitudinally-curved gear teeth
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T407/00—Cutters, for shaping
    • Y10T407/13—Yieldable tool
    • Y10T407/134—Resiliently mounted tool
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T407/00—Cutters, for shaping
    • Y10T407/17—Gear cutting tool
    • Y10T407/1705—Face mill gear cutting tool
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/10—Gear cutting

Definitions

  • a cutter head for a gear-cutting machine and the like having a disc-shaped body with a seating surface at the rear disposed at right angles to the axis of the body.
  • An elastically resilient hub in the interior of and connected to the body having a conical centering bore with the axis of the bore coinciding with the axis of the body.
  • Radiallydisposed ribs extend in an axial direction over the entire width of the hub connect the hub to the body.
  • the wall of the conical bore has recesses in the region of the ribs whereby the hub is more elastically resilient between the ribs than in the region of the ribs.
  • the ribs are formed by a number of bores disposed in a circle concentric to the centering bore of the hub.
  • the invention relates to a cutter head, particularly for a gear-cutting machine having a disc-shaped body with a seating surface at the rear disposed at right-angles to the axis of the body, with an elastically resilient hub in the interior of and connected to the body and having a conical centering bore, the axis of which coincides with the axis of the body.
  • the object of the present invention is to obviate this disadvantage.
  • the cutter head according to the invention is characterised in that the hub is connected to the body of the cutter head by radially disposed ribs extending in an axial direction over the entire width of the hub, the wall of the conical bore having recesses in the zone of the ribs and the hub being more elastically resilient between the ribs than in the zone of the ribs.
  • FIG. 1 is an axial cross-section through a face cutter head and the end of the arbor supporting it;
  • FIG. 2 is a partial rear view of the cutter head after removal of the arbor according to a second embodiment
  • FIG. 3 is a sectional view of the cutter head shown in FIG. 2 and FIG. 4 is the same as FIG. 2 with the cutter head hub expanded.
  • FIG. 1 a work spindle 10 is mounted about an axis 11 in a spindle stock housing (not shown) of a gear-cutting machine.
  • FIG. 1 shows only a part of the front end of this work spindle 10 which has a plane end face 12 disposed at right-angles to the axis 11. From this end face 12, a conically shaped pin-member 13 protrudes having a peripheral surface 14 equiaxial with the axis 11. Likewise equiaxial in the pinmember 13 is a threaded bore 15.
  • a cutter head 16 Mounted on the work spindle 10 is a cutter head 16 having a disc-shaped body 17, from which a series of cutters 18 project, in fact in the direction of the axis 11. They are usually disposed in a circle concentric with the axis 11, though they may however also be disposed along one or a plurality of spirals surrounding the axes.
  • the end faces of the cutters i.e. the faces which encounter the workpiece as the cutter head rotates, have inner and outer lateral edges 19 and 20 as well as front edges 21. In the case of many cutter heads, only the inner and front edges 19 and 21 form a cutting action, while in the case of others this action is performed by only the outer and the front edges 20, 21.
  • cutter heads in which the inner edge 19 and outer edge 20 cut alternately, while the front edge 21 of each cutter performs a cutting action. Then again, there are cutter heads on which only every second cutter 18 cuts, applying its front edge 21 and side edge 19 or 20. There are also various other arrangements of cutters 18.
  • the cutters 18 are adjustably anchored in the cutter head 16 in a manner which is not shown in the drawings.
  • the cutter head 16 is mounted on the spindle by a screw bolt 22.
  • the bolt 22 passes through a central bore 23 in the disc 17 and is screwed into the threaded bore 15 of the work spindle.
  • the bolt 22 has a head 24 having a hexagonal recess 25 for insertion of a key.
  • the head 24 is located in the interior of the disc-shaped body 17.
  • the rear seating surface 26 of the cutter head 16 is pressed against the end face 12 of the work spindle 10 by the bolt 22, in order to secure the cutter head exactly in a plane extending at right-angles to the axis 11.
  • the cutter head is fitted on to the conical surface 14 of the spindle pin 13 by means of a conical bore 27, the connection being by a press fit, when the cutter head 16 is flush against the face 12 of the spindle 10.
  • the spindle 10 drives the cutter head 16 by means of a spline (not shown) disposed on the end face 12 of the spindle 10 and engaging in a groove (not shown) on the rear face 26 of the cutter head 16. In some cases, this spline may also ensure a definite angular position between the cutter head 16 and the spindle 10.
  • a number of bores 28 are disposed in the rear face 26, their axes 29 being in a circle concentric with the spindle axis 11.
  • These bore axes 29 may be disposed either parallel with the spindle axis 11 or, as shown in FIG. 3, they may be inclined at an angle to the spindle axis 11. This angle corresponds to the angle enclosed by the generatrix of the conical face of the bore 27 and the spindle axis 11. This angle is for example 77'30".
  • the conical bore 27 discharges into a hollow space 30, the diameter of which is so selected that passages 31 are formed between the circularly-disposed bores 28 and the said hollow space 30.
  • the conical bore 27, the circle of bores 28, the hollow space 30 and the passages 31 bound an elastically resilient hub 32, the axis of which coincides with the axis of the body, the hub being connected to the disc-shaped body 17 only by ribs 33.
  • ribs 33 In the zone of these radially disposed ribs 33 are provided, in the wall of the conical bore 27 and extending over the entire width of the hub 32, recesses 34 which prevent the pin-member 13 of the work spindle bearing on the hub 32 in the zone of the ribs 33.
  • These recesses may have a circularly cylindrical limitation.
  • the ribs 33 which are substantially bound by the walls of the bores 28, extend in an axial direction over the entire width of the hub 32 which is more resilient between the ribs 33 than in the region of the ribs.
  • the hub 32 may be elastically deformed in the region between the ribs 33.
  • the radius of the conical bore 27 has expanded by the amount D, so that, as can be seen from FIG. 4, the bores 28 deform without considerable stresses arising in the disc-shaped body 17 of the cutter head.
  • the maximum diameter of the conical pin-member 13 of the work spindle 10 is 130.11 mm. with a tolerance of 0 and +0.00% mm., while the maximum diameter of the conical bore 27 is likewise 130.11 mm.
  • a cutter head for a gear-cutting machine and the like comprising a disc-shaped body having a seating surface at the rear disposed at right angles to the axis of said body, an elastically resilient hub in the interior of and connected to said body having a conical centering bore, the axis of said bore coinciding with the axis of said body, radially-disposed ribs (33) extending in an axial direction over the entire width of said hub (32) connecting said hub (32) to said body (17), the wall of said conical bore (27) having recesses (34) in the region of said ribs (33) whereby said hub (32) is more elastically resilient between said ribs (33) than in the region of said ribs (33).
  • a cutter head wherein the axes of said bores which are disposed in a circle are inclined by the same angle in relation to the axis of said body as is the generatrix of said conical bore wall (27).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Milling Processes (AREA)
US781775A 1968-01-08 1968-12-06 Cutter head,particularly for gear-cutting machine Expired - Lifetime US3531843A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH22668A CH484712A (de) 1968-01-08 1968-01-08 Messerkopf, insbesondere für Verzahnungsmaschine

Publications (1)

Publication Number Publication Date
US3531843A true US3531843A (en) 1970-10-06

Family

ID=4182153

Family Applications (1)

Application Number Title Priority Date Filing Date
US781775A Expired - Lifetime US3531843A (en) 1968-01-08 1968-12-06 Cutter head,particularly for gear-cutting machine

Country Status (7)

Country Link
US (1) US3531843A (de)
JP (1) JPS4815187B1 (de)
CH (1) CH484712A (de)
DE (1) DE1810087B1 (de)
FR (1) FR1595877A (de)
GB (1) GB1214347A (de)
SE (1) SE333492B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5215417A (en) * 1991-04-11 1993-06-01 The Gleason Works Rotary ring cutter

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1442659A (en) * 1920-06-10 1923-01-16 Leblond Mach Tool Co R K Milling-machine spindle
US2212406A (en) * 1938-06-16 1940-08-20 Niles Bement Pond Co Tool mounting for machine tool spindles
DE1023654B (de) * 1956-01-24 1958-01-30 Hermann Greiner K G Messerkopfaufnahme fuer Fraesspindelkoepfe
US2828672A (en) * 1955-07-08 1958-04-01 Gleason Works Rotary cutter for gears and the like
US2983166A (en) * 1958-07-28 1961-05-09 Clarence W Davidson Rotary cutting tool
US3138996A (en) * 1962-10-08 1964-06-30 Gleason Works Face mill cutter and machine for cutting gears

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1442659A (en) * 1920-06-10 1923-01-16 Leblond Mach Tool Co R K Milling-machine spindle
US2212406A (en) * 1938-06-16 1940-08-20 Niles Bement Pond Co Tool mounting for machine tool spindles
US2828672A (en) * 1955-07-08 1958-04-01 Gleason Works Rotary cutter for gears and the like
DE1023654B (de) * 1956-01-24 1958-01-30 Hermann Greiner K G Messerkopfaufnahme fuer Fraesspindelkoepfe
US2983166A (en) * 1958-07-28 1961-05-09 Clarence W Davidson Rotary cutting tool
US3138996A (en) * 1962-10-08 1964-06-30 Gleason Works Face mill cutter and machine for cutting gears

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5215417A (en) * 1991-04-11 1993-06-01 The Gleason Works Rotary ring cutter

Also Published As

Publication number Publication date
DE1810087B1 (de) 1970-01-02
SE333492B (de) 1971-03-15
JPS4815187B1 (de) 1973-05-12
GB1214347A (en) 1970-12-02
CH484712A (de) 1970-01-31
FR1595877A (de) 1970-06-15

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