DE458830C - Lifting and lowering device for the grinding table of a glass grinding and polishing machine - Google Patents

Lifting and lowering device for the grinding table of a glass grinding and polishing machine

Info

Publication number
DE458830C
DE458830C DED52753D DED0052753D DE458830C DE 458830 C DE458830 C DE 458830C DE D52753 D DED52753 D DE D52753D DE D0052753 D DED0052753 D DE D0052753D DE 458830 C DE458830 C DE 458830C
Authority
DE
Germany
Prior art keywords
grinding
lifting
polishing machine
wedge
lowering device
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
Application number
DED52753D
Other languages
German (de)
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.)
Mannesmann Demag AG
Original Assignee
Demag AG
Publication date
Priority to DED52753D priority Critical patent/DE458830C/en
Application granted granted Critical
Publication of DE458830C publication Critical patent/DE458830C/en
Expired legal-status Critical Current

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
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
    • B24B7/22—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain
    • B24B7/24—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain for grinding or polishing glass

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)

Description

Heb- und Senkvorrichtung für den Schleiftisch einer Glasschleif- und Poliermaschine. Das Heben und Senken des Schleiftisches von Glasschleif- und Poliermaschinen erfolgt bisher unter Vermittlung einer hydraulischen Antriebseinrichtung, die auf die Königswelle einwirkt, oder durch eine Hebebühne, die durch mehrere hydraulische Zylinder gehoben und gesenkt wird. Bei letzterer Anordnung ist ein gleichmäßiges Heben der Bühne nicht möglich, da es praktisch nicht durchführbar ist, mehrere hydraulische Kolben in der erforderlichen Weise gleichmäßig zu steuern. Bei der hydraulischen Hebevorrichtung muß, um ein Sinken der Welle bei nachlassendem Wasserdruck zu verhindern, ein Schieber untergeschoben werden. Das Ausbauen der hydraulischen Manschetten ebenso wie das jedesmalige Einsetzen des Schiebers ist eine äußerst schwierige und zeitraubende Arbeit.Lifting and lowering device for the grinding table of a glass grinding and Polishing machine. Raising and lowering the grinding table of glass grinding and polishing machines has been carried out so far with the mediation of a hydraulic drive device on the vertical shaft acts, or by a lifting platform, which is operated by several hydraulic Cylinder is raised and lowered. The latter arrangement is a uniform one Lifting the platform is not possible as it is practically impracticable to use multiple hydraulic ones To control the piston uniformly in the required manner. With the hydraulic Lifting device must, in order to prevent the shaft sinking when the water pressure drops, a slide can be pushed underneath. The same applies to removing the hydraulic cuffs how to insert the slide every time is an extremely difficult and time-consuming one Job.

Die Erfindung sieht nun zum Heben und Senken der Welle und damit des Tisches in an sich bekannter Weise einen Keil vor, der in einer seiner rechteckigen Form entsprechenden Aussparung mit in der Einstellrichtung geneigter Anlauffläche untergebracht und am Gestell abgestützt ist und seine Bewegung durch eine selbstsperrende Antriebsvorrichtung erhält, um eine Verdrehung des zu verstellenden Teiles um seine vertikale Achse in seiner Führung und die unbeabsichtigte Verschiebung des Keils in seiner Einstellrichtung bei feinster Einstellbarkeit zu verhindern.The invention now provides for raising and lowering the shaft and thus the Table in a known manner in front of a wedge in one of its rectangular Shape of the corresponding recess with the contact surface inclined in the direction of adjustment housed and supported on the frame and its movement by a self-locking Drive device receives to a rotation of the part to be adjusted by his vertical axis in its leadership and the inadvertent displacement of the wedge to prevent in its adjustment direction with the finest adjustability.

In der Zeichnung ist in den Abb. i und 2 ein Ausführungsbeispiel der Erfindung in zwei senkrecht zueinander stehenden vertikalen Schnitten dargestellt.In the drawing, in Figs. I and 2, an embodiment of the Invention shown in two mutually perpendicular vertical sections.

Mit a ist hierbei die Königswelle der Glasschleif- und -poliermaschine bezeichnet, die 1 zum Ein- und Ausfahren des Schleiftisches vermittels des Keiles b, auf dem sie sich abstützt, gehoben und gesenkt wird. An den Keil b greift die Gewindespindel c an, die unter Vermittlung des dargestellten Zahnrades d und eines nicht gezeichneten Elektromotors angetrieben wird und dadurch.in dem jeweils gewollten Sinne eine selbstsperrende Bewegung des Keiles herbeiführt. Die Verschiebung des Keiles b hat, wie aus der Zeichnung ohne weiteres ersichtlich, ein Heben und Senken der Königswelle und damit des Schleiftisches zur Folge.With a here the vertical shaft of the glass grinding and polishing machine is referred to, the 1 is raised and lowered to retract and extend the grinding table by means of the wedge b on which it is supported. The threaded spindle c engages on the wedge b, which is driven by means of the illustrated gear wheel d and an electric motor (not shown) and thereby causes a self-locking movement of the wedge in the desired sense. As can be readily seen from the drawing, the displacement of the wedge b results in the vertical shaft and thus the grinding table being raised and lowered.

Auf das dargestellte Ausführungsbeispiel ist die Erfindung nicht beschränkt, da der Antrieb des Keiles auch durch andere selbstsperrende Antriebsvorrichtungen herbeigegeführt werden kann.The invention is not limited to the illustrated embodiment, because the wedge is also driven by other self-locking drive devices can be brought about.

Claims (1)

PATENTANSPRUCI3: Heb- und Senkvorrichtung für den Schleiftisch einer Glasschleif- und Poliermaschine, dadurch gekennzeichnet, daß der, wie bekannt, als Einstellmittel benutzte Keil (b) in einer seiner rechteckigen Form entsprechenden Aussparung mit in der Einstellrichtung geneigter Anlauffläche untergebracht und am Gestell abgestützt ist und daß seine Bewegung durch eine selbstsperrende Antriebsvorrichtung (c) erfolgt, um eine Verdrehung des zu verstellenden Teiles um seine vertikale Achse in seiner Führung und die unbeabsichtigte Verschiebung des Keiles in seiner Einstellrichtung bei feinster Einstellbarkeit zu verhindern.PATENTANSPRUCI3: Lifting and lowering device for the grinding table of a Glass grinding and polishing machine, characterized in that the, as known, as Adjustment means used wedge (b) in a shape corresponding to its rectangular shape Recess housed with an inclined contact surface in the setting direction and is supported on the frame and that its movement by a self-locking drive device (c) takes place in order to rotate the part to be adjusted about its vertical axis in its leadership and the inadvertent displacement of the wedge in its direction of adjustment to prevent with the finest adjustability.
DED52753D Lifting and lowering device for the grinding table of a glass grinding and polishing machine Expired DE458830C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DED52753D DE458830C (en) Lifting and lowering device for the grinding table of a glass grinding and polishing machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED52753D DE458830C (en) Lifting and lowering device for the grinding table of a glass grinding and polishing machine

Publications (1)

Publication Number Publication Date
DE458830C true DE458830C (en) 1928-04-20

Family

ID=7054425

Family Applications (1)

Application Number Title Priority Date Filing Date
DED52753D Expired DE458830C (en) Lifting and lowering device for the grinding table of a glass grinding and polishing machine

Country Status (1)

Country Link
DE (1) DE458830C (en)

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