EP2732915A3 - Spring end grinding machine with protection device - Google Patents

Spring end grinding machine with protection device Download PDF

Info

Publication number
EP2732915A3
EP2732915A3 EP13192737.8A EP13192737A EP2732915A3 EP 2732915 A3 EP2732915 A3 EP 2732915A3 EP 13192737 A EP13192737 A EP 13192737A EP 2732915 A3 EP2732915 A3 EP 2732915A3
Authority
EP
European Patent Office
Prior art keywords
grinding
spring
helical compression
unit
compression springs
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.)
Granted
Application number
EP13192737.8A
Other languages
German (de)
French (fr)
Other versions
EP2732915A2 (en
EP2732915B1 (en
Inventor
Joachim Reichel
Martin Schnizler
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.)
Wafios AG
Original Assignee
Wafios 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 Wafios AG filed Critical Wafios AG
Publication of EP2732915A2 publication Critical patent/EP2732915A2/en
Publication of EP2732915A3 publication Critical patent/EP2732915A3/en
Application granted granted Critical
Publication of EP2732915B1 publication Critical patent/EP2732915B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • B24B27/00—Other grinding machines or devices
    • B24B27/0069—Other grinding machines or devices with means for feeding the work-pieces to the grinding tool, e.g. turntables, transfer means
    • 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
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/005—Feeding or manipulating devices specially adapted to grinding machines
    • 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
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/04—Protective covers for the grinding wheel
    • 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
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/06—Dust extraction equipment on grinding or polishing machines
    • 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
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/10—Single-purpose machines or devices
    • B24B7/16—Single-purpose machines or devices for grinding end-faces, e.g. of gauges, rollers, nuts, piston rings
    • B24B7/167—Single-purpose machines or devices for grinding end-faces, e.g. of gauges, rollers, nuts, piston rings end faces coil springs

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

Eine Federendenschleifmaschine (100) zum Schleifen von Federenden von Schraubendruckfedern hat eine Schleifeinheit (120), die ein Schleifscheibenpaar mit zwei drehbaren Schleifscheiben (130, 140) aufweist, zwischen denen ein Schleifraum (135) gebildet ist, eine Ladeeinheit (150), die mindestens einen im Wesentlichen achsparallel mit den Schleifscheiben drehbaren Ladeteller (160, 170) aufweist, der eine Vielzahl von außeraxialen Federaufnahmen (166) zur Aufnahme jeweils einer Schraubendruckfeder (F) hat, und eine Steuereinheit (102) zur Steuerung der Ladeeinheit und der Schleifeinheit. In Federaufnahmen aufgenommene Schraubendruckfedern (F) sind durch Drehung eines in einer Arbeitsposition angeordneten Ladetellers sukzessive ertlang einer Schleifbahn durch den Schleifraum transportierbar. Während einer Bearbeitungsphase stehen jeweils beide Federenden der im Schleifraum befindlichen Schraubendruckfedern gleichzeitig in einem Kontaktbereich derart in spanabtragendem Eingriff mit einer zugeordneten Schleifscheibe, dass von dem Kontaktbereich ein Partikelstrom mit abgetragenen Partikeln des Werkstoffs der Schraubenfedern ausgeht. An mindestens einer durch den Partikelstrom erreichbaren Position der Federendenschleifmaschine ist eine Schutzeinrichtung (221, 222, 223, 224, 225, 226, 227) angebracht. Zumindest eine dem Partikelstrom ausgesetzte Oberfläche der Schutzeinrichtung besteht aus einem anorganischen Nicht-Eisen-Material, z.B. aus Messing. Dadurch kann die Entstehung von störenden eisenhaltigen Ablagerungen an den geschützten Stellen weitgehend unterdrückt werden.

Figure imgaf001
A spring end grinding machine (100) for grinding spring ends of helical compression springs has a grinding unit (120) having a grinding wheel pair with two rotatable grinding wheels (130, 140) between which a grinding space (135) is formed, a loading unit (150) at least a loading plate (160, 170) rotatable substantially axially parallel with the grinding wheels, having a plurality of off-axis spring retainers (166) for receiving a respective helical compression spring (F), and a control unit (102) for controlling the loading unit and the grinding unit. Helical compression springs (F) accommodated in spring receptacles can be transported successively along a grinding path through the grinding space by rotation of a loading plate arranged in a working position. During a processing phase, both spring ends of the helical compression springs located in the grinding space are simultaneously in a contact region in chip-removing engagement with an associated grinding wheel that emanates a particle stream of abraded particles of the material of the helical springs from the contact region. A protective device (221, 222, 223, 224, 225, 226, 227) is attached to at least one position of the spring-end grinding machine that can be reached by the particle flow. At least one of the particle flow exposed surface of the protective device consists of an inorganic non-ferrous material, such as brass. As a result, the formation of disturbing iron-containing deposits at the protected sites can be largely suppressed.
Figure imgaf001
EP13192737.8A 2012-11-20 2013-11-13 Spring end grinding machine with protection device Active EP2732915B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201210221221 DE102012221221A1 (en) 2012-11-20 2012-11-20 Spring sander with protection device

Publications (3)

Publication Number Publication Date
EP2732915A2 EP2732915A2 (en) 2014-05-21
EP2732915A3 true EP2732915A3 (en) 2015-05-27
EP2732915B1 EP2732915B1 (en) 2019-08-21

Family

ID=49578179

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13192737.8A Active EP2732915B1 (en) 2012-11-20 2013-11-13 Spring end grinding machine with protection device

Country Status (3)

Country Link
EP (1) EP2732915B1 (en)
CN (1) CN103831708A (en)
DE (1) DE102012221221A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103786081B (en) * 2013-12-31 2016-04-20 绍兴市家度弹簧机械有限公司 A kind of spring grinding mechanism
US20180136094A1 (en) * 2014-11-12 2018-05-17 Illinois Tool Works Inc. Planar grinder
CN105598763A (en) * 2016-01-22 2016-05-25 重庆市安太弹簧有限责任公司 Abrasive disk used for grinding double end faces of spring
CN105773347A (en) * 2016-04-29 2016-07-20 新昌县盛金祺机械有限公司 Efficient bearing polishing equipment
CN109176195B (en) * 2018-09-25 2023-12-15 杭州恒立弹簧制造有限公司 Efficient spring grinding machine
CN112296830A (en) * 2019-07-30 2021-02-02 均豪精密工业股份有限公司 Grinding device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB615492A (en) * 1946-07-03 1949-01-06 Heath Spring & Notion Company Improvements in or relating to machines for grinding the ends of coiled springs
DE8114600U1 (en) * 1981-05-16 1981-10-22 Ernst Witzmann, Metallverarbeitung, Vorrichtungsbau, 5620 Velbert PROTECTIVE DEVICE FOR THE SHAFT OF BAND GRINDING MACHINES
JPH08276364A (en) * 1995-04-06 1996-10-22 Mitsubishi Materials Corp Polishing and grinding having damping properties and device for cutting work
JP2010089208A (en) * 2008-10-08 2010-04-22 Sanyo Special Steel Co Ltd Method of preventing deposition of abrasive particle in spinning type cutting machine cover container and cutting machine cover container

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1020255B (en) * 1954-08-07 1957-11-28 Karl Hack Spring end grinding machine with vertical grinding spindle and grinding wheel spacing adjustable by means of a fine measuring thread
DE1020892B (en) * 1954-08-07 1957-12-12 Karl Hack Spring end grinding machine with removable protective cover for the grinding wheels
CN2212479Y (en) * 1994-11-28 1995-11-15 阳旻企业股份有限公司 Lapping machine for end surface of spring conveyed continuously

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB615492A (en) * 1946-07-03 1949-01-06 Heath Spring & Notion Company Improvements in or relating to machines for grinding the ends of coiled springs
DE8114600U1 (en) * 1981-05-16 1981-10-22 Ernst Witzmann, Metallverarbeitung, Vorrichtungsbau, 5620 Velbert PROTECTIVE DEVICE FOR THE SHAFT OF BAND GRINDING MACHINES
JPH08276364A (en) * 1995-04-06 1996-10-22 Mitsubishi Materials Corp Polishing and grinding having damping properties and device for cutting work
JP2010089208A (en) * 2008-10-08 2010-04-22 Sanyo Special Steel Co Ltd Method of preventing deposition of abrasive particle in spinning type cutting machine cover container and cutting machine cover container

Also Published As

Publication number Publication date
EP2732915A2 (en) 2014-05-21
CN103831708A (en) 2014-06-04
DE102012221221A1 (en) 2014-05-22
EP2732915B1 (en) 2019-08-21

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