DE2346563A1 - Spindle press with overload guard - spindle nut lifts axially against hydraulic or pneumatic load - Google Patents

Spindle press with overload guard - spindle nut lifts axially against hydraulic or pneumatic load

Info

Publication number
DE2346563A1
DE2346563A1 DE19732346563 DE2346563A DE2346563A1 DE 2346563 A1 DE2346563 A1 DE 2346563A1 DE 19732346563 DE19732346563 DE 19732346563 DE 2346563 A DE2346563 A DE 2346563A DE 2346563 A1 DE2346563 A1 DE 2346563A1
Authority
DE
Germany
Prior art keywords
spindle
press
spindle nut
nut
axially against
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.)
Pending
Application number
DE19732346563
Other languages
German (de)
Inventor
Heinz Kesper
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.)
EDELHOFF WERKZEUGMASCH
Original Assignee
EDELHOFF WERKZEUGMASCH
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 EDELHOFF WERKZEUGMASCH filed Critical EDELHOFF WERKZEUGMASCH
Priority to DE19732346563 priority Critical patent/DE2346563A1/en
Publication of DE2346563A1 publication Critical patent/DE2346563A1/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/28—Arrangements for preventing distortion of, or damage to, presses or parts thereof
    • B30B15/281—Arrangements for preventing distortion of, or damage to, presses or parts thereof overload limiting devices
    • B30B15/284—Arrangements for preventing distortion of, or damage to, presses or parts thereof overload limiting devices releasing fluid from a fluid chamber subjected to overload pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/18—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by screw means
    • B30B1/22—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by screw means driven through friction disc means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)

Abstract

The spindle is driven by a friction wheel which presses against a wheel at the end of the spindle. The spindle nut is secured against rotation but has axial play. The nut is mounted with sealing rings in the press frame. The axial space above the spindle nut is connected via a one-way valve to a pump and to an overload valve. When the press die hits the workpiece, the reaction force will be taken up by the hydraulic or pneumatic loading on the nut.

Description

Firma Gebr. Edelhoff Werkzeugmaschinenfabrik, 56 Wuppertal-Vohwinkel,Company Gebr. Edelhoff machine tool factory, 56 Wuppertal-Vohwinkel,

Kaiser Str. 132Kaiser Str. 132

SpindelpresseScrew press

Die Erfindung bezieht sich auf eine Spindelpresse mit einer im Pressenges teil drehfest gelagerten Spindelmutter.The invention relates to a screw press with a spindle nut rotatably mounted in part in the press joint.

Es ist Aufgabe der Erfindung,. Pressen der eingangs beschriebenen Gattung mit einer hydraulischen oder pneumatischen Oberlastsicherung zu versehen.It is the object of the invention. Presses of the type described above to be provided with a hydraulic or pneumatic overload safety device.

Die Lösung der Aufgabe besteht erfindungsgemäß darin, daß als Oberlastsicherung die Spindelmutter der Presse dient, die axial verschiebbar und durch ein vorgespanntes Druckmedium beaufschlagt ist.The object is achieved according to the invention in that the spindle nut of the press, which is axially displaceable and is acted upon by a pretensioned pressure medium, serves as an overload safety device.

Bei auftretender Oberlast kann die Spindelmutter mit der Spindel und dem daran befindlichen Stößel nach oben ausweichen.If an overload occurs, the spindle nut with the spindle and evade the attached plunger upwards.

Es ist zwar bereits bei Spindelpressen mit als Schwungrädern ausgebildeten Spindelmuttern bekannt, den Spindelmuttern Ringkolben überzuordnen, die von den Spindeln durchsetzt sind und deren Ringraum mit einem vorgespannten Druckmedium gefüllt ist. Bei auftretender Oberlast stützen sich die Spindelmuttern an den Ringkolben ab und weichen mitIt is already known in screw presses with spindle nuts designed as flywheels to superpose the spindle nuts with annular pistons which are penetrated by the spindles and their annular space with is filled with a pretensioned pressure medium. When overload occurs the spindle nuts are supported on the annular piston and give way with it

509812/0222509812/0222

diesen nach oben aus. Derartige öberlastsicherungen sind durch die Anordnung der Kolben konstruktiv relativ, kompliziert. Demgegenüber ist die erfindungsgemäße überlastsicherung insofern einfach im Aufbau, als die vorhandene Spindelmutter gleichzeitig den Kolben der Oberlastsicherung bildet.this upwards. Such overload protection devices are due to the arrangement the piston structurally relatively, complicated. In contrast is the overload protection according to the invention to the extent that it is simple in structure, as the existing spindle nut at the same time the piston of the overload safety device forms.

In der Zeichnung ist die Erfindung an einer Schwungrad-Spindelpresse veranschaulicht.In the drawing, the invention is on a flywheel screw press illustrated.

Mit 1 ist das Pressengestell mit dem Tisch 2 und mit 3 die Spindel mit dem Pressenstößel 4 bezeichnet. Der Antrieb der Spindel 3 erfolgt über eine Schwungscheibe 5 mittels elektromotorisch angetriebener Reibscheiben 6. Mit 7 ist die Spindelmutter bezeichnet, die in dem Pressengestell 1 drehfest und axial verschiebbar gelagert ist. Sie besitzt kopfseitig einen Halsansatz 8, mit dem sie sich in dem Pressengestell 1 mit Schiebesitz führt. Der oberhalb der Spindelmutter 7 in dem Pressengestell 1 mit 9 bezeichnete Raum ist mit einem Druckmedium gefüllt, das mittels einer Pumpe Io in den Raum 9 gefördert wird. Mit 11 ist ein Druckbegrenzungsventil bezeichnet. Der Druck des Druckmediums ist so bemessen, daß sich eine der gewünschten Nennkraft der Presse entsprechende Vorspannung ergibt. Mit 12,13 sind Dichtungen bezeichnet, mit denen die Spindelmutter 7 und ihr Halsansatz 8 in dem Pressengestell 1 abgedichtet sind. The press frame with the table 2 is denoted by 1 and the spindle with the press ram 4 is denoted by 3. The spindle 3 is driven via a flywheel 5 by means of friction disks 6 driven by an electric motor. The spindle nut 7, which is mounted in the press frame 1 in a rotationally fixed and axially displaceable manner. At the head end it has a neck extension 8 with which it is guided in the press frame 1 with a sliding seat. The space labeled 9 above the spindle nut 7 in the press frame 1 is filled with a pressure medium which is conveyed into the space 9 by means of a pump Io. 11 with a pressure relief valve is designated. The pressure of the pressure medium is measured in such a way that a preload corresponding to the desired nominal force of the press results. Seals with which the spindle nut 7 and its neck extension 8 are sealed in the press frame 1 are denoted by 12, 13.

-3--3-

509 8 12/0222509 8 12/0222

Für gewöhnlich sitzt die Spindelmutter 7 durch den Druck des in dem Raum 9 befindlichen Druckmittels auf ihrem Sitz in dem Pressengesten 1 auf. Bei auftretender überlast wird die Spindelmutter 7 über den Stößel 4 und die Spindel 3 entgegen der Druckwirkung des Druckmediums von ihrem Sitz abgehoben, wobei das in dem Raum 9 befindliche Druckmedium unter Energieverlust aus dem Raum 9 gedrückt wird.Usually the spindle nut 7 is seated by the pressure of the in the Space 9 located pressure medium on their seat in the press gestures 1. If an overload occurs, the spindle nut 7 is over the plunger 4 and the spindle 3 are lifted from their seat counter to the pressure effect of the pressure medium, the one located in the space 9 Pressure medium is pressed out of the space 9 with a loss of energy.

-4--4-

5098 12/02225098 12/0222

Claims (1)

PatentanspruchClaim Spindelpresse mit einer im Pressengestell drehfest gelagerten Spindelmutter, dadurch gekennzeichnet, daß als Oberlastsicherung die Spindelmutter (7) dient, die axial verschiebbar und durch ein vorgespanntes Druckmedium beaufschlagt ist.Screw press with a rotatably mounted in the press frame Spindle nut, characterized in that the spindle nut (7) serves as an overload safety device, which is axially displaceable and through a pretensioned pressure medium is applied. 509812/0222509812/0222
DE19732346563 1973-09-15 1973-09-15 Spindle press with overload guard - spindle nut lifts axially against hydraulic or pneumatic load Pending DE2346563A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19732346563 DE2346563A1 (en) 1973-09-15 1973-09-15 Spindle press with overload guard - spindle nut lifts axially against hydraulic or pneumatic load

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732346563 DE2346563A1 (en) 1973-09-15 1973-09-15 Spindle press with overload guard - spindle nut lifts axially against hydraulic or pneumatic load

Publications (1)

Publication Number Publication Date
DE2346563A1 true DE2346563A1 (en) 1975-03-20

Family

ID=5892696

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19732346563 Pending DE2346563A1 (en) 1973-09-15 1973-09-15 Spindle press with overload guard - spindle nut lifts axially against hydraulic or pneumatic load

Country Status (1)

Country Link
DE (1) DE2346563A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2430844A1 (en) * 1978-07-11 1980-02-08 Burdet Jean L Sa Closed tooling for hot pressing of watch cases - has hydraulic pressure increased as punch descends and released at preset safety value
DE3037082A1 (en) * 1980-10-01 1982-05-06 Malmedie & Co Maschinenfabrik GmbH, 4000 Düsseldorf Machine tool overload protection system - comprises plate lifted off seat by spindle against hydraulic pressure
DE8910841U1 (en) * 1989-09-11 1989-11-02 The Japan Steel Works, Ltd., Tokio/Tokyo Screw press
EP0474995A2 (en) * 1990-09-12 1992-03-18 Bêché & Grohs GmbH Screw press

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2430844A1 (en) * 1978-07-11 1980-02-08 Burdet Jean L Sa Closed tooling for hot pressing of watch cases - has hydraulic pressure increased as punch descends and released at preset safety value
DE3037082A1 (en) * 1980-10-01 1982-05-06 Malmedie & Co Maschinenfabrik GmbH, 4000 Düsseldorf Machine tool overload protection system - comprises plate lifted off seat by spindle against hydraulic pressure
DE8910841U1 (en) * 1989-09-11 1989-11-02 The Japan Steel Works, Ltd., Tokio/Tokyo Screw press
EP0474995A2 (en) * 1990-09-12 1992-03-18 Bêché & Grohs GmbH Screw press
DE4028886A1 (en) * 1990-09-12 1992-03-19 Beche & Grohs Gmbh SPINDLE PRESS
EP0474995A3 (en) * 1990-09-12 1992-08-26 Beche & Grohs Gmbh Screw press

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