US20050170753A1 - Method and device for producing gear plates for a continuously variable gearbox - Google Patents

Method and device for producing gear plates for a continuously variable gearbox Download PDF

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Publication number
US20050170753A1
US20050170753A1 US10/474,233 US47423303A US2005170753A1 US 20050170753 A1 US20050170753 A1 US 20050170753A1 US 47423303 A US47423303 A US 47423303A US 2005170753 A1 US2005170753 A1 US 2005170753A1
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US
United States
Prior art keywords
transmission
grinding
motion
pendulum
spindle
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.)
Abandoned
Application number
US10/474,233
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English (en)
Inventor
Erwin Junker
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.)
Erwin Junker Maschinenfabrik GmbH
Original Assignee
Erwin Junker Maschinenfabrik 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 Erwin Junker Maschinenfabrik GmbH filed Critical Erwin Junker Maschinenfabrik GmbH
Assigned to ERWIN JUNKER MASCHINENFABRIK GMBH reassignment ERWIN JUNKER MASCHINENFABRIK GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: JUNKER, ERWIN
Publication of US20050170753A1 publication Critical patent/US20050170753A1/en
Abandoned legal-status Critical Current

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    • 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
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
    • B24B5/14—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding conical surfaces, e.g. of centres
    • 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
    • B24B35/00—Machines or devices designed for superfinishing surfaces on work, i.e. by means of abrading blocks reciprocating with high frequency
    • 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
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
    • B24B5/16—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding peculiarly surfaces, e.g. bulged
    • B24B5/162—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding peculiarly surfaces, e.g. bulged controlled by a template

Definitions

  • the present invention relates to a method as well as to an apparatus for the manufacture of transmission plates for a continuously variable transmission, such as a belt-and-pulley drive.
  • a continuously variable transmission also called a CVT
  • a transmission surface is herein to be understood the surface, at which forces are transferred.
  • the transmission surface can have a shape that is curved or straight, radially across the transmission plate.
  • the transmission plates arranged in pairs are adjustable as to the space between them, and a force-transferring element, such as a chain of fine links, for example, can be deflected between them. By adjusting the space between the plates, a continuous adjustability is achieved.
  • the force-transferring element migrates positively along the transmission surface of the confronting transmission plates.
  • the force-transferring element is thus shifted up and down and from the inside out and vice versa on the transmission surface between an inside diameter and an outside diameter.
  • a radial, relative pendulum-like motion with respect to the workpiece spindle is performed between the grinding wheel and the transmission plate for grinding the conical or spherical transmission surface, so that the grinding area of the grinding wheel on the transmission surface migrates between an inside radius and an outside radius of the surface.
  • the grinding pattern of the drive surface can be varied selectively.
  • a cross grind for example, can be produced with the inventive method.
  • Cross grinding refers here to a grinding pattern, in which the cuts somehow cross one another. In this manner, the surface roughness of the drive surface can be controlled, thereby creating optimum conditions for avoiding slippage by a force-transferring element in the operation of the transmission.
  • the surface can be produced within the necessary close dimensional tolerances and has the necessary strength. Since the surface roughness of the transmission plates is plainly improved by the controlled creation of the surface roughness of the transmission plates and slippage is prevented to a great degree, the contact pressure of the transmission plates can be further reduced, which results in a reduction of the surface-to-surface pressure and thus also of friction in the transfer of force and hence an improvement in the efficiency of the transmission.
  • a continuously variable transmission having transmission plates manufactured according to the invention ultimately also leads to a reduction in the fuel consumption of an internal combustion engine in comparison with the fuel consumption of conventionally made transmissions.
  • Cross grinding produced in this manner, offers the advantages that the percentage of contact area on the surface of the transmission plates is higher, since a “cross grind” is obtained similar to that produced on honed surfaces.
  • the rotational speed of the workpiece spindle is coordinated with the pendulum-like motion.
  • a uniform grinding pattern can be produced on the transmission surface in all areas.
  • the speed of the workpiece spindle is varied according to the radial grinding position of the grinding wheel on the transmission surface.
  • a uniform grinding pattern can be produced on all areas of the transmission surface, for example by increasing or reducing the workpiece spindle speed, especially by achieving equal grinding conditions at all points of grinding contact, so as to produce the same surface roughness on all circumferential areas of the transmission plate. This prevents the force transfer element from operating at different slippage limits at different positions on the transmission plate.
  • the rate of the pendulum-like motion is varied according to the radial position of the grinding wheel on the transmission surface.
  • the relative pendulum-like motion can be performed by a back-and-forth movement either of the grinding wheel or of the transmission plate.
  • two workpiece spindles are provided, which are associated with each other such that a pendulum-like motion across the transmission surfaces can be performed by two transmission plates, so that a pair of transmission plates can be ground in a vise with only one grinding wheel.
  • the two workpiece spindles are so adjusted in this case that the transmission surfaces of the two plates are arranged adjacent one another, while the conical or spherical transmission surfaces each lie in a single plane.
  • the machining of two mounted transmission plates by the method of the invention thus permits the manufacturing time to be reduced.
  • the cycle periods can be approximately cut in half. It is obvious in this case that the workpiece spindle speeds are coordinated with the lengthened swing.
  • the two workpiece spindles can be turned about a common pivot point so that the transmission surfaces can be produced with a spherical surface shape.
  • the position of the pivot point is determined by the radius of the spherical shape.
  • the inventive apparatus for producing transmission plates for a continuously variable transmission has at least one workpiece spindle and one grinding spindle, the grinding spindle and the transmission plates being arranged so that, during the grinding operation, a relative pendulum-like motion across the transmission surface, in a radial direction with respect to the workpiece spindle axis, can be performed between the grinding wheel and the workpiece spindle.
  • the grinding pattern on the transmission surface can be influenced with the apparatus. Due to the pendulum-like motion it is possible, instead of the otherwise customary uniformly radial grinding pattern, to produce any desired grinding pattern on the surface, e.g., a cross grind, a grinding pattern spiraling outward, or any other desired grinding pattern.
  • the relative pendulum-like motion can be achieved preferably either by a grinding wheel that can be shifted back and forth or by a transmission plate that can be shifted in the same manner.
  • a grinding wheel spindle carriage which is adjustable angularly with respect to the workpiece spindle.
  • the grinding wheel spindle carriage permits precise and rapid shifting back and forth of the grinding wheel across the transmission surface being ground. Due to angular adjustability with respect to the workpiece spindle different conical shapes of transmission plates can be manufactured.
  • the apparatus has a control system, with which the relative pendulum-like motion can be deliberately controlled.
  • the pendulum-like motion can be deliberately varied so that a predefined surface roughness of the transmission surface of the transmission plates can be established.
  • the rotational speed of the workpiece spindle and the velocity of the pendulum-like motion are variable.
  • the machining of the transmission surface can thus be optimized for a particular application, i.e., with respect to its slippage and frictional properties in the operation of the transmission.
  • the workpiece spindle can rotate about a pivot point to produce a “spherical” shape of the transmission surface.
  • the pivot point is determined in this case by the desired or required radius of curvature.
  • the rotational movement then also serves at the same time for producing the relative pendulum-like motion.
  • the apparatus has two workpiece spindles, which are adjustable for alignment and their spacing apart.
  • the apparatus thus permits the simultaneous grinding of two transmission plates simultaneously, as well as the execution of the pendulum-like motion of the invention during the grinding.
  • the manufacturing time can in this way be reduced.
  • the cone angle is adjustable in this way.
  • the two-workpiece spindles can turn about a common pivot point; this permits the production of spherical or various surfaces on the transmission surfaces.
  • the apparatus is part of a CNC machining center.
  • the transmission plates can be further processed in a single set-up. Changeover between different operating steps preceding or following the grinding operation is thus unnecessary.
  • FIG. 1 shows a diagrammatic plan view of a first embodiment of the inventive grinding apparatus
  • FIG. 2 shows a diagrammatic plan view of a second embodiment of the invention using two workpiece spindles
  • FIG. 3 shows a diagrammatic plan view of an embodiment alternative to the one in FIG. 1 and
  • FIG. 4 shows a diagrammatic plan view of an embodiment alternative to the one in FIG. 2 .
  • FIG. 1 A plan view of an inventive grinding apparatus is shown simplified in FIG. 1 .
  • the workpiece 1 is a transmission plate with a conical surface 2 , clamped in a workpiece spindle 3 .
  • the transmission plate 1 has a conical transmission surface 2 , i.e., it slopes in only one direction. It is obvious, however, that the transmission plate 1 can also have a shape sloping in two directions.
  • a grinding wheel 4 is provided on a grinding spindle 5 to grind the conical transmission surface 2 of the transmission plate 1 .
  • the grinding wheel 4 and the grinding spindle 5 are provided on a grinding spindle carriage 6 such that the grinding wheel 4 can perform a pendulum-like motion while grinding the surface 2 .
  • a control system 7 is provided, by which the rotational speed of the workpiece spindle 3 as well as the pendulum-like motion of the grinding wheel 4 can be controlled.
  • the grinding wheel 4 swings back and forth between an outside radius 2 . 2 and an inside radius 2 . 1 such that its tracks on the surface 2 cross one another.
  • a cross grind can be produced on the surface 2 .
  • the apparatus it is therefore possible to control the surface roughness of the transmission surface 2 of the transmission plate 1 .
  • the rotational speed of the workpiece spindle 3 , the speed and direction of the pendulum-like motion of the grinding wheel can be established through the control system 7 .
  • Other adjustment parameters are the same as in conventional grinding machines, such as for example the movement of the grinding wheel 4 toward the surface in the X-Y plane.
  • FIG. 2 shows diagrammatically a second embodiment of the grinding apparatus of the invention in which, unlike the embodiment previously described, two workpiece spindles 3 and 3 ′ are provided.
  • the apparatus to grind two transmission plates 1 and 1 ′ in one set-up.
  • the two workpiece spindles 3 , 3 ′ are aligned with one another according to the cone shape of the transmission surface 2 , 2 ′ such that the surface lines of each half of the conical surface 2 , 2 ′ are in a single plane.
  • the grinding spindle 5 is arranged on a grinding spindle slide 6 , which permits a pendulum-like motion from the inside radius 2 . 1 of the surface 2 of the one transmission plate 1 to the inside radius 2 . 1 of the other transmission plate 1 ′. In this way the time required for the grinding of the transmission surface of transmission plates can be reduced.
  • FIG. 3 presents schematically an alternative embodiment of the grinding apparatus from FIG. 1 .
  • a movable grinding spindle 6 instead of a movable grinding spindle 6 , here the pendulum-like motion during grinding the transmission surface 2 is performed by a workpiece spindle 10 , which can swing back and forth.
  • a radius shape i.e., spherical shape of the transmission surface 2 is developed, which has a targeted surface roughness due to the cross-grinding that is generated.
  • the position of the pivot point 8 determines the radius of curvature of the spherical surface and is preferably adjustable.
  • FIG. 4 as in FIG. 3 , an alternative embodiment of the grinding machine from FIG. 2 is represented diagrammatically with two workpiece spindles.
  • the two-workpiece spindles 10 , 10 ′ can pivot around a common point 9 such that the pendulum-like motion can be performed through the workpiece spindles 10 , 10 ′, while grinding wheel 4 approaches in direction Y.
  • the pivot point 9 is adjustable, as is the swing angle ⁇ to adapt the apparatus to various shapes of transmission plates.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Friction Gearing (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Pulleys (AREA)
US10/474,233 2001-04-04 2002-04-03 Method and device for producing gear plates for a continuously variable gearbox Abandoned US20050170753A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10116807A DE10116807B4 (de) 2001-04-04 2001-04-04 Verfahren und Vorrichtung zur Herstellung von Getriebescheiben eines stufenlos verstellbaren Getriebes
DE10116807.1 2001-04-04
PCT/EP2002/003654 WO2002081147A2 (de) 2001-04-04 2002-04-03 Verfahren und vorrichtung zur herstellung von getriebescheiben eines stufenlos verstellbaren getriebes

Publications (1)

Publication Number Publication Date
US20050170753A1 true US20050170753A1 (en) 2005-08-04

Family

ID=7680375

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/474,233 Abandoned US20050170753A1 (en) 2001-04-04 2002-04-03 Method and device for producing gear plates for a continuously variable gearbox

Country Status (12)

Country Link
US (1) US20050170753A1 (ru)
EP (1) EP1372906B1 (ru)
JP (1) JP3949583B2 (ru)
KR (1) KR100816576B1 (ru)
CN (1) CN100400231C (ru)
AU (1) AU2002312789A1 (ru)
BR (1) BR0208687B1 (ru)
CZ (1) CZ298796B6 (ru)
DE (2) DE10116807B4 (ru)
ES (1) ES2269710T3 (ru)
RU (1) RU2284891C2 (ru)
WO (1) WO2002081147A2 (ru)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004041117A1 (de) * 2004-08-24 2006-03-02 Nyffenegger, Ulrich Verfahren und Vorrichtung zum Schleifen eines Profils eines Werkstücks
CN102335844A (zh) * 2011-10-22 2012-02-01 安庆机床有限公司 一种圆锥滚子球基面磨床
JP5842550B2 (ja) 2011-11-08 2016-01-13 日本精工株式会社 超仕上げ加工装置、超仕上げ加工方法、及び外輪の製造方法
CN109386587A (zh) * 2017-08-09 2019-02-26 本田技研工业株式会社 无级变速器用带轮及无级变速器用带轮的制造方法
CN107756182A (zh) * 2017-10-30 2018-03-06 重庆代发铸造有限公司 特殊工件打磨装置
CN108500817A (zh) * 2018-03-29 2018-09-07 宁波鑫神泽汽车零部件有限公司 汽车零件抛光装置
CN111230678A (zh) * 2020-03-19 2020-06-05 苏州市职业大学 一种精密细小圆弧磨削加工机构
CN111702610B (zh) * 2020-07-07 2021-05-25 中国航发动力股份有限公司 一种发动机轮盘环列异形榫槽尖边处理方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2040449A (en) * 1931-06-10 1936-05-12 Gen Motors Corp Grinding machine
US2212179A (en) * 1938-12-20 1940-08-20 Martin Joseph Harry Lens grinder
US3871813A (en) * 1971-10-28 1975-03-18 Danker & Wohlk Inc Mold member for contact lens construction
US4074416A (en) * 1974-04-24 1978-02-21 Raytheon Company Mirror and method of making same
US5938516A (en) * 1997-12-17 1999-08-17 Amsted Industries Incorporated Grinding wheel and method for removal of sprues and riser pads from cast railcar wheels
US6283687B1 (en) * 1996-07-02 2001-09-04 Boehringer Werkzeugmaschinen Gmbh Multiple milling on crankshafts
US6579215B2 (en) * 2000-05-31 2003-06-17 Toshiba Kikai Kabushiki Kaisha Machine tool management system

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Publication number Priority date Publication date Assignee Title
FR674808A (fr) * 1928-07-05 1930-02-03 Anciens Etablissements Fetu De Machine à rectifier d'après gabarit
DE844553C (de) * 1945-05-01 1952-07-21 Gottfried Wohlgemuth Einstellvorrichtung fuer Rundschleifmaschine
FR1216177A (fr) * 1958-02-14 1960-04-22 Buss Ag Procédé et dispositif pour meuler et polir les fonds et les couvercles de récipients
CH452384A (fr) * 1966-02-18 1968-05-31 Genevoise Instr Physique Rectifieuse pour cônes et cylindres
IT1220123B (it) * 1987-11-02 1990-06-06 Dyanex Di Bandelli D & Visinti Spazzola rotante per levigatura
RO107379B1 (ro) * 1990-01-06 1993-11-30 Mecanica Nicolina Dispozitiv de rectificat suprafețe sferice, exterioare și interioare
JP3402801B2 (ja) * 1994-11-22 2003-05-06 本田技研工業株式会社 無段変速機用プーリ装置の可動シーブ加工方法
JPH10337643A (ja) * 1997-06-06 1998-12-22 Mitsubishi Heavy Ind Ltd 研磨装置
JP2000130527A (ja) * 1998-10-30 2000-05-12 Nissan Motor Co Ltd Ｖベルト式無段変速機用プーリー及び無段変速機
DE19955818B4 (de) * 1999-01-20 2004-08-05 Nsk Ltd. Verfahren zum Schleifen der Zugoberfläche einer halbringförmigen Scheibe eines stufenlosen Getriebes

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2040449A (en) * 1931-06-10 1936-05-12 Gen Motors Corp Grinding machine
US2212179A (en) * 1938-12-20 1940-08-20 Martin Joseph Harry Lens grinder
US3871813A (en) * 1971-10-28 1975-03-18 Danker & Wohlk Inc Mold member for contact lens construction
US4074416A (en) * 1974-04-24 1978-02-21 Raytheon Company Mirror and method of making same
US6283687B1 (en) * 1996-07-02 2001-09-04 Boehringer Werkzeugmaschinen Gmbh Multiple milling on crankshafts
US5938516A (en) * 1997-12-17 1999-08-17 Amsted Industries Incorporated Grinding wheel and method for removal of sprues and riser pads from cast railcar wheels
US6579215B2 (en) * 2000-05-31 2003-06-17 Toshiba Kikai Kabushiki Kaisha Machine tool management system

Also Published As

Publication number Publication date
BR0208687B1 (pt) 2011-07-26
JP3949583B2 (ja) 2007-07-25
RU2003132074A (ru) 2005-04-20
EP1372906A2 (de) 2004-01-02
CN1500027A (zh) 2004-05-26
WO2002081147B1 (de) 2003-11-27
KR20030093273A (ko) 2003-12-06
RU2284891C2 (ru) 2006-10-10
CN100400231C (zh) 2008-07-09
DE10116807A1 (de) 2002-10-17
WO2002081147A3 (de) 2003-05-01
ES2269710T3 (es) 2007-04-01
WO2002081147A2 (de) 2002-10-17
BR0208687A (pt) 2004-08-03
JP2004532134A (ja) 2004-10-21
AU2002312789A1 (en) 2002-10-21
DE50207564D1 (de) 2006-08-31
KR100816576B1 (ko) 2008-03-24
CZ298796B6 (cs) 2008-01-30
CZ20032700A3 (en) 2004-03-17
DE10116807B4 (de) 2007-01-11
EP1372906B1 (de) 2006-07-19

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Date Code Title Description
AS Assignment

Owner name: ERWIN JUNKER MASCHINENFABRIK GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:JUNKER, ERWIN;REEL/FRAME:015029/0069

Effective date: 20030122

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION