EP0088164A1 - Zuführeinrichtung - Google Patents

Zuführeinrichtung Download PDF

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Publication number
EP0088164A1
EP0088164A1 EP82111561A EP82111561A EP0088164A1 EP 0088164 A1 EP0088164 A1 EP 0088164A1 EP 82111561 A EP82111561 A EP 82111561A EP 82111561 A EP82111561 A EP 82111561A EP 0088164 A1 EP0088164 A1 EP 0088164A1
Authority
EP
European Patent Office
Prior art keywords
workpiece
feed device
perforated plate
electromagnet
workpieces
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.)
Ceased
Application number
EP82111561A
Other languages
German (de)
English (en)
French (fr)
Inventor
Werner Engel
Hans Günter Seiler
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.)
Goetze GmbH
Original Assignee
Goetze 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 Goetze GmbH filed Critical Goetze GmbH
Publication of EP0088164A1 publication Critical patent/EP0088164A1/de
Ceased legal-status Critical Current

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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
    • 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
    • B24B7/17—Single-purpose machines or devices for grinding end-faces, e.g. of gauges, rollers, nuts, piston rings for simultaneously grinding opposite and parallel end faces, e.g. double disc grinders
    • 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

Definitions

  • the invention relates to a feed device for processing machines, in particular for grinding machines, consisting of a transport device which receives the workpieces to be processed, in particular piston rings, individually and which feeds at least one processing tool, with which a magnetic device holding the workpieces inside the transport device interacts.
  • a feed device for grinding machines is already known from DE-PS 879'369.
  • the feed device consists of a rotating disk, in which a large number of permanent magnets of alternating polarity are arranged in the entire end face area facing the workpieces to be transported.
  • the entire end face area based on the workpieces in the circumferential direction, can thus be magnetized.
  • the workpieces in particular with an annular cross section, are individually removed from a storage container by the magnets and placed in the area of the magnets on the smooth end face of the rotating disk.
  • a guide device in the form of rails is provided, which forces the workpieces held on the disc by magnetic force in a certain direction.
  • the feed device mentioned has the following disadvantages: On the one hand, a large number of magnets are required to hold the entire transport disk to magnetize and on the other hand a relatively large space is required to be able to set up the machine.
  • the invention has for its object to provide a feed device with simple means that can be used universally with any processing machines, but especially grinding machines.
  • the feed device should be almost optimally suitable for, in contrast to the prior art, high throughput speeds in terms of space requirements, manageability and operational reliability.
  • the transport device consists of a perforated plate that can be at least partially inserted into the working area of the processing machine and the magnetic device consisting of at least one electromagnet is arranged stationary in the area of the workpiece holder of the perforated plate.
  • this feed device can be used universally for processing machines, such as grinding machines with one or more grinding wheels, lapping machines, honing machines or similar machines. These are the preferred areas of application.
  • the shape of the workpieces is also of minor importance. In addition to cylindrical and ring-shaped (eg piston rings) workpieces, any angular workpieces can also be fed to the respective processing machine with this device.
  • An electromagnet preferably a controllable direct current electromagnet, is used so that the danger that several workpieces are drawn into an opening in the perforated plate at the same time and thus tilting and resulting damage to the transport device can be eliminated.
  • This is achieved, inter alia, in that the DC electromagnet can be switched off after the first workpiece has been drawn into a recess in the perforated plate.
  • the impulse for the power cut-off occurs automatically due to the change in the magnetic field when the first ring is pulled in.
  • an electromagnet consists of a current-carrying coil (with an iron core), the effect of which is based on the fact that a current generates a magnetic field in its surroundings. The strength of a magnetic field is hardly influenced by most substances.
  • Ferromagnetic materials such as iron, nickel, cobalt and the like, however, cause a change in the magnetic field.
  • This known effect is used according to the invention.
  • the workpiece itself thus serves as a switching mechanism in that the magnet switches off as soon as it has drawn a workpiece into an opening in the perforated plate.
  • the magnetic current is switched on again automatically by an adjustable time stage when the first workpiece has left the area of the magnetic field due to the transport movement of the perforated plate.
  • Various criteria are to be used for the cycle time of the direct current electromagnet. It can be controllable on the one hand depending on the transport speed, on the other hand on the respective workpiece dimension, in particular on the diameter of piston rings, or on the other hand depending on both criteria.
  • At least one further electromagnet connected as a permanent magnet is provided in the area of the workpiece holder of the perforated plate in addition to the controllable electromagnet or magnets.
  • the combination of these two different magnets is intended to expand or improve the mode of operation of the feed device. It must be taken into account here that the field strength of the electromagnet connected as a permanent magnet does not exert itself on the workpiece that has not yet been drawn in, in order to counteract the risk that several workpieces are unintentionally drawn into only one opening in the perforated plate as soon as they reach the area of the continuous magnetic field will.
  • the permanent magnet is preferably, viewed in the transport direction of the perforated plate, arranged in front of the electromagnet and has essentially that Function to first pull the rings into the transport device at this point.
  • a particularly good mode of operation results from the stationary arrangement of three controllable electromagnets and two electromagnets connected as permanent magnets, all of which are relatively small, in the area of the memorandum holder of the perforated plate.
  • the feed device 1 shown in the schematic diagram according to FIG. 1 essentially consists of an oscillating feed tube 2 which is arranged at an angle ⁇ to the machine axis 3.
  • the workpieces, on the one hand disk-shaped 4, on the other hand ring-shaped 5 (for example piston rings, bearing rings or the like) are arranged in packs within the feed trough 2 and are moved downwards along the slope by the oscillating movement thereof.
  • the perforated plate 7 is at least partially Can be inserted into the working area between two rotating grinding wheels 10, 11, the workpieces 4 or 5 being machined on both end faces 12, 13.
  • a support body 14 On the side of the perforated plate 7 facing away from the packaged workpieces 4 or 5 there is a support body 14 which initially forms the support surface 15 for the workpieces 4 or 5.
  • a plurality of direct current electromagnets 17-21 are arranged, which cooperate with a controller 22.
  • the electromagnets 17-19 can be switched off and serve to attract the individual workpieces 4 or 5.
  • the electromagnets 20, 21 are switched so that they have a permanent magnetic field.
  • the workflow of the feed device according to the invention is roughly as follows:
  • the workpieces 4 are moved in the direction of the perforated plate 7 along the slope of the feed channel 2.
  • the perforated plate 7 runs at a constant speed, for example 25 m / min.
  • the available time for drawing in assuming a 5 mm diameter play between the workpiece outer diameter and the hole diameter in the perforated plate 7 is 0.012 s. With an axial perforated plate thickness of 2 mm, this corresponds to an axial conveying speed of 10,000 mm / min.
  • the controllable direct current electromagnets 17 - 19 are now energized so that a magnetic field can build up.
  • the first workpiece 4 is drawn into the area of an opening 9 and comes to rest on the support surface 15.
  • a measuring device 23 is provided which Magnetic field change detected and the controller 22 notifies that a workpiece 4 has been drawn into an opening 9.
  • the electromagnets 17 - 19 are switched off so that no further workpiece 4 can be drawn into the already occupied opening 9.
  • the very weak electromagnets connected as permanent magnets 20, 21 prevent the retracted workpiece 4 from falling out of the opening during further transport.
  • the magnetic current is switched on again by a time stage connected to the control 22 as soon as the workpiece 4 has left the area of the magnetic field of the electromagnets 17-19, which are now inactive.
  • the transformed magnetic current is shown with a trigger pulse.
  • the magnetic current absorbed by the magnets 17-19 remains constant after the switch-on (a) until a workpiece 4 penetrates into the area of the magnetic field and thus causes a change in the current consumption (b). If the change in the magnetic field has been detected, the controllable electromagnets switch off and are switched on again after a precisely defined time (t ⁇ , t2) by a time step.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Non-Mechanical Conveyors (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
EP82111561A 1982-03-09 1982-12-13 Zuführeinrichtung Ceased EP0088164A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823208395 DE3208395C1 (de) 1982-03-09 1982-03-09 Werkstueckzufuehreinrichtung
DE3208395 1982-03-09

Publications (1)

Publication Number Publication Date
EP0088164A1 true EP0088164A1 (de) 1983-09-14

Family

ID=6157697

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82111561A Ceased EP0088164A1 (de) 1982-03-09 1982-12-13 Zuführeinrichtung

Country Status (3)

Country Link
EP (1) EP0088164A1 (ja)
JP (1) JPS58171250A (ja)
DE (1) DE3208395C1 (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105171427A (zh) * 2015-08-31 2015-12-23 重庆理工大学 活塞环斜端面全自动磨床
CN109015346A (zh) * 2018-07-02 2018-12-18 宁夏共享机床辅机有限公司 活塞环珩磨机上料机的控制控制系统及其控制方法
CN116141194A (zh) * 2023-02-28 2023-05-23 肇庆高峰机械科技有限公司 一种双端面磨床用自动上料装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7407572B2 (en) * 2004-07-23 2008-08-05 Exxonmobil Research And Engineering Company Feed injector
JP4874631B2 (ja) * 2005-11-10 2012-02-15 康元 糸島 噴射ノズル

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1499104A (en) * 1919-08-09 1924-06-24 Frederic E Gardner Grinding machine
US1548562A (en) * 1921-05-16 1925-08-04 Blanchard Machine Company Means for and method of handling work pieces
DE879369C (de) * 1949-11-09 1953-06-11 Gardner Machine Company Zufuehrvorrichtung fuer Schleifmaschinen
DE881760C (de) * 1951-01-09 1953-07-02 Goetzewerke Maschine zum Laeppen der Schulterflaechen von Kolbenringen
US2835085A (en) * 1955-11-21 1958-05-20 Hanchett Magna Lock Corp Magnetic dial feeder
US2862601A (en) * 1956-03-07 1958-12-02 Robert L Littwin Electromagnetic transfer apparatus
DE7507716U (de) * 1975-07-10 Licentia Patent Verwaltungs Gmbh Vereinzelungs- und Zuführvorrichtung von eisenhaltigen Kleinteilen zum Einsatzort

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3461621A (en) * 1967-06-27 1969-08-19 Textron Inc Machine for face-grinding bearing rings or the like

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7507716U (de) * 1975-07-10 Licentia Patent Verwaltungs Gmbh Vereinzelungs- und Zuführvorrichtung von eisenhaltigen Kleinteilen zum Einsatzort
US1499104A (en) * 1919-08-09 1924-06-24 Frederic E Gardner Grinding machine
US1548562A (en) * 1921-05-16 1925-08-04 Blanchard Machine Company Means for and method of handling work pieces
DE879369C (de) * 1949-11-09 1953-06-11 Gardner Machine Company Zufuehrvorrichtung fuer Schleifmaschinen
DE881760C (de) * 1951-01-09 1953-07-02 Goetzewerke Maschine zum Laeppen der Schulterflaechen von Kolbenringen
US2835085A (en) * 1955-11-21 1958-05-20 Hanchett Magna Lock Corp Magnetic dial feeder
US2862601A (en) * 1956-03-07 1958-12-02 Robert L Littwin Electromagnetic transfer apparatus

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Soviet Inventions Illustrated week B 08, 4. April 1979, Section P 56 & SU-A-601 126 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105171427A (zh) * 2015-08-31 2015-12-23 重庆理工大学 活塞环斜端面全自动磨床
CN109015346A (zh) * 2018-07-02 2018-12-18 宁夏共享机床辅机有限公司 活塞环珩磨机上料机的控制控制系统及其控制方法
CN109015346B (zh) * 2018-07-02 2020-05-15 宁夏共享机床辅机有限公司 活塞环珩磨机上料机的控制系统及其控制方法
CN116141194A (zh) * 2023-02-28 2023-05-23 肇庆高峰机械科技有限公司 一种双端面磨床用自动上料装置

Also Published As

Publication number Publication date
DE3208395C1 (de) 1983-10-27
JPS58171250A (ja) 1983-10-07

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): CH DE GB IT LI

17P Request for examination filed

Effective date: 19830811

STAA Information on the status of an ep patent application or granted ep patent

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18R Application refused

Effective date: 19850701

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SEILER, HANS GUENTER

Inventor name: ENGEL, WERNER