US3891407A - Method for grinding bevel- or hyperboloid-shaped gears - Google Patents

Method for grinding bevel- or hyperboloid-shaped gears Download PDF

Info

Publication number
US3891407A
US3891407A US297986A US29798672A US3891407A US 3891407 A US3891407 A US 3891407A US 297986 A US297986 A US 297986A US 29798672 A US29798672 A US 29798672A US 3891407 A US3891407 A US 3891407A
Authority
US
United States
Prior art keywords
grinding
axis
bodies
gears
head
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
US297986A
Other languages
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
Priority to US429519A priority Critical patent/US3877176A/en
Application granted granted Critical
Publication of US3891407A publication Critical patent/US3891407A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B23F23/1237—Tool holders
    • B23F23/1268—Face-mill-type grinding wheel holders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23F—MAKING GEARS OR TOOTHED RACKS
    • B23F19/00—Finishing gear teeth by other tools than those used for manufacturing gear teeth
    • B23F19/002—Modifying the theoretical tooth flank form, e.g. crowning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23F—MAKING GEARS OR TOOTHED RACKS
    • B23F9/00—Making gears having teeth curved in their longitudinal direction
    • B23F9/02—Making gears having teeth curved in their longitudinal direction by grinding

Definitions

  • ABSTRACT A method of, and apparatus for, grinding bevelor hyperboloid-shaped gears having lengthwise curved teeth with the aid ofa grinding body rotating about its axis, wherein the axis of the grinding body is moved within a tooth gap and continuously along an endless path.
  • the apparatus for the performance of the aforesaid method contemplates the provision of a number of grinding bodies which are rotatably mounted about their axis at a circle at a grinding wheel or head, and wherein the grinding wheel is rotatable about an axis containing the center of the aforesaid circle.
  • Drive means serve for the rotation of the grinding bodies.
  • bevelor hyperboloidshaped gears are ground in that there is employed a single grinding disk, wherein during an indexing type method technique one tooth gap after the other must be ground.
  • the method aspects of this development are characterized by the features that the axis of the grinding body moves within a tooth gap and continuously along an endless path.
  • the alproatus for the performance of the aforesaid method is manifested by the features that a number of grinding bodies are mounted to be rotatable about their axis at a circle at the grinding wheel, that the grinding wheel is rotatable about an axis containing the center of the aforesaid circle and is provided with a drive for rotating the grinding bodies.
  • FIG. 1 is a longitudinal sectional view through a grinding wheel or head of the inventive apparatus
  • FIG. 2 is a top view of the grinding wheel of FIG. I.
  • FIG. 3 illustrates a machine employing the grinding wheel illustrated in FIGS. 1 and 2 for grinding bevelor hyperboloid gears.
  • a grinding wheel or head possesses eleven grinding bodies 11 arranged along an outer circle having a radius Ka and eleven grinding bodies 12 arranged along an inner circle having the radius K,-.
  • different angular spacings prevail between these grinding bodies 11 and 12, and specifically there are provided a smaller angular spacing d), and a larger angular spacing (1) so that there are formed groups of two respective grinding bodies 11 and 12 which respectively engage in a tooth gap or space of the gear to be ground.
  • the grinding bodies 11 can be employed for grinding the convex tooth flanks and the grinding bodies 12 for grinding the concave tooth flanks. Further, the axis of each of the grinding bodies is rolled along a curve corresponding to the directrix of the associated gear tooth.
  • the grinding wheel or head 10 possesses a base body 13 having a conical bore 14 by means of which this grinding wheel 10 can be secured to a non-illustrated work spindle.
  • a retaining or holder ring 15 with screws 16.
  • the eleven inner grinding bodies 12 are secured to this retaining ring 15.
  • the outer grinding bodies 11 and 12 are radially displaceable.
  • each inner grinding body 12 a holder or support 17 which is radially displaceably supported at the retaining ring 15.
  • a blade spring 20 is provided at each holder 17, between which there is mounted an inner grinding body 12.
  • the outer grinding bodies 11 are displaceable at holders or supports 22 at the base body 13.
  • the holder 22 is displaceable in radial direction with the aid of an adjustment screw 23 and can be fixed in desired position with the aid of a fixing screw 24.
  • a blade spring 25 secures the holder 22 against any unintentional displacement when the fixing screw 24 is released.
  • the retaining ring 15 is rotatably secured to base body 13. To rotate the retaining ring 15 upon the base body 13 it is sufficient to release the screws 16.
  • the grinding bodies 11 and 12 are composed of a conical tip 11a and 12a and a cylindrical portion 11b and 12b respectively. Such outer grinding bodies 11 are seated upon a spindle 27, the rear end face 28 of which is arched or domed. This end face 28 bears upon a first ring-shaped control disk 29.
  • This first control disk or cam 29 is secured at housing 30, in which is mounted the non-illustrated work spindle, and does not rotate together with the grinding wheel or head 10.
  • the inner grinding bodies 12 also bear upon a second ring-shaped control disk or cam 31.
  • the second control disk 31 is secured in any suitable and therefore not particularly illustrated fashion at the first control disk 29. With the aid of such control disks 29, 31 the inner and outer grinding bodies 11, 12 can be displaced in axial direction while bending through the blade springs 21 and 26 respectively. Both control disks 29 and 31 are suitably adjustably secured to the housing 30.
  • Both the inner and the outer grinding bodies 11 and 12 are rotatable about their own axis and are driven pneumatically.
  • each grinding body 11, 12 is provided with a penumatic drive motor 32, which has not been particularly illustrated in the drawing since it can be of conventional design.
  • a compressed air conduit or line 33 leads to each drive motor 32, the compressed air conduit 33 being attached to the base body 13.
  • a channel 34 is provided at the base body 13 for each compressed air conduit 33. All of the channels 34 open into a ring-shaped compartment 35 at the interior of a stationary grinding ring 36.
  • the ring-shaped compartment 35 is connected through the agency of a hose 37, secured to the grinding ring 36, with a nonillustrated compressed air source.
  • the grinding wheel or head described in conjunction with FIGS. 1 and 2 is employed in a machine known as such in the art and generally illustrated in FIG. 3.
  • This machine embodies a V-belt 7AM driven by a non-illustrated motor.
  • This motor drives the grinding wheel or head 10 through the agency of a the aforementioned V-belt as well as through the agency of a transmission A.
  • Transmission A renders possible switching to four different speeds.
  • this transmission A possesses four change gears A1, A2, A3, A4, so that grinding wheel can be driven at eight different rotational speeds.
  • At the gears designated by reference character B there is provided an intermediate gear 6A2, by means of which the direction of rotation of the grinding wheel can be reversed. This renders possible the grinding of hyperboloid gears.
  • the shaft 3A1, at which there is secured the grinding wheel 10, can be inclined with regard to the shaft 4A2.
  • the gears designated by reference character C must be exchanged. Owing to this inclination there also can be ground a very flat gear without the grinding bodies contacting the gear at its path when they move in front of and past the teeth of the gear to be ground.
  • At the shaft 1T2 there is secured the gear to be ground.
  • This shaft 1T2 is driven by a differential gearing or differential tranmission D through the agency of different change gears T1, T2, T3, T4 as well as via the shafts 7T1, 7T2, 7T3 and 2T1.
  • a roller drum 40, at which is located the grinding wheel 10, is driven by an endless worm 6W 1.
  • This worm 6W1 is connected with a trans mission box S rendering possible changeover to eighteen different speeds.
  • the movement of the roller drum is transmitted with the desired transmission ratio to a satellite support of the differential transmission D.
  • change gears W1 to W6 Between the transmission box S and the differential transmission D there are arranged change gears W1 to W6.
  • An auxiliary motor E is provided for the purpose of rapidly moving the roller drum back into its starting position.
  • the mode of operation of the described apparatus is as follows: at the machine depicted in FIG. 3 there are produced the gears which are to be ground with the aid of the inventive apparatus. For this purpose there is mounted at this machine instead of the grinding wheel 10 a cutter head or tooth cutter which has not been illustrated in the drawing. The cutting operation occurs in a manner well known to those skilled in the art and therefore is not here further explained, especially since details of the cutting operation do not constitute subject matter of this invention.
  • the gear produced in the conventional manner upon the machine depicted in FIG. 3 now can be ground in that there is mounted at the machine. instead of the cutter head, the grinding wheel or head 10. For grinding the gear the machine is placed into operation in the same manner as during cutting of the gear.
  • control disks 29 and 31 which render possible axial displacement of the grinding bodies 11 and 12. Owing to this axial displacement of the grinding bodies 11 and 12 the gear can be ground in crowned or cambered manner in the desired way. In order to be able to change the load bearing surface of the tooth flank it is necessary to alter the position of the control disks. This can occur either solely by adjusting the control disks 29, 31 at the housing 30 or by exchanging such control disks 29, 31 for control disks of a different shape or configuration.
  • a method for grinding bevelor hyperboloidshaped gears with lengthwise curved teeth with the aid of a grinding head at which there are arranged a number of grinding bodies comprising:

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
US297986A 1971-10-21 1972-10-16 Method for grinding bevel- or hyperboloid-shaped gears Expired - Lifetime US3891407A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US429519A US3877176A (en) 1971-10-21 1974-01-02 Apparatus for grinding bevel- or hyperboloid-shaped gears

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1537571A CH543921A (de) 1971-10-21 1971-10-21 Verfahren zum Schleifen von kegel- oder hyperboloidförmigen Zahnrädern sowie eine Vorrichtung zur Durchführung dieses Verfahrens

Publications (1)

Publication Number Publication Date
US3891407A true US3891407A (en) 1975-06-24

Family

ID=4408559

Family Applications (1)

Application Number Title Priority Date Filing Date
US297986A Expired - Lifetime US3891407A (en) 1971-10-21 1972-10-16 Method for grinding bevel- or hyperboloid-shaped gears

Country Status (9)

Country Link
US (1) US3891407A (sv)
JP (1) JPS5335318B2 (sv)
CH (1) CH543921A (sv)
DE (1) DE2250707C3 (sv)
FR (1) FR2157602A5 (sv)
GB (1) GB1392862A (sv)
IT (1) IT969749B (sv)
SE (1) SE389043B (sv)
SU (1) SU506276A3 (sv)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0377124A2 (en) * 1989-01-06 1990-07-11 Eaton Corporation Improved method of making ring gear and ring gear therefrom
US6263571B1 (en) * 1994-12-05 2001-07-24 David B. Dooner Toothed gear design and manufacturing method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0022586B1 (de) * 1979-07-12 1982-12-15 Werkzeugmaschinenfabrik Oerlikon-Bührle AG Verfahren zum Balligschleifen von Zahnrädern mit längsgekrümmten Zähnen und Schleifkopf zur Durchführung des Verfahrens

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1243767A (en) * 1914-11-05 1917-10-23 Lees Bradner Co Method of cutting a worm.
US1305437A (en) * 1919-06-03 Method of forming worm gears
US3503301A (en) * 1968-04-04 1970-03-31 Dan R Cantrell Apparatus and method for cutting gears

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1305437A (en) * 1919-06-03 Method of forming worm gears
US1243767A (en) * 1914-11-05 1917-10-23 Lees Bradner Co Method of cutting a worm.
US3503301A (en) * 1968-04-04 1970-03-31 Dan R Cantrell Apparatus and method for cutting gears

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0377124A2 (en) * 1989-01-06 1990-07-11 Eaton Corporation Improved method of making ring gear and ring gear therefrom
EP0377124A3 (en) * 1989-01-06 1992-01-15 Eaton Corporation Improved method of making ring gear and ring gear therefrom
US6263571B1 (en) * 1994-12-05 2001-07-24 David B. Dooner Toothed gear design and manufacturing method

Also Published As

Publication number Publication date
JPS5335318B2 (sv) 1978-09-26
JPS4850394A (sv) 1973-07-16
DE2250707C3 (de) 1975-11-06
IT969749B (it) 1974-04-10
CH543921A (de) 1973-11-15
SU506276A3 (ru) 1976-03-05
DE2250707B2 (de) 1975-03-13
DE2250707A1 (de) 1973-04-26
FR2157602A5 (sv) 1973-06-01
GB1392862A (en) 1975-05-07
SE389043B (sv) 1976-10-25

Similar Documents

Publication Publication Date Title
US4648295A (en) Method for producing workpieces having polygonal outer and/or inner contours and apparatus for implementing the method
US3782040A (en) Gear machine
US3757474A (en) Curved surface generator
US3891407A (en) Method for grinding bevel- or hyperboloid-shaped gears
US3877176A (en) Apparatus for grinding bevel- or hyperboloid-shaped gears
US3823626A (en) Method of and apparatus for machining curved surfaces
US4015370A (en) Machine for grinding of peripheral surfaces on work pieces
CN108044196A (zh) 坡口机
US3964367A (en) Device for machining trochoidal inner walls, especially for the cylinders of Wankel engines
US2164978A (en) Method of and machine for grinding gears
US1815336A (en) Method and apparatus for grinding gears
US4467567A (en) Method of crown grinding gears having lengthwise curved teeth
US4265053A (en) Apparatus for grinding cutting tools
US2706872A (en) Grinding machine
US1610527A (en) Lapping machine
US2356869A (en) Method and apparatus for generating gears by planetary motion
JPS6247145B2 (sv)
US2784649A (en) Machine tool for the production of blades of centrifugal machines
US4292765A (en) Machine for abrading outside diameters and the method of making same
US1990240A (en) Progressive multiple spindle gear shaping machine
EP0076859B1 (en) Cam grinding machine
KR20210031199A (ko) 감속기
SU483229A1 (ru) Плоскодоводочный станок
US2038665A (en) Gear grinding machine
JPS6219983B2 (sv)