DE1220285B - Hand-operated hydraulic control device - Google Patents

Hand-operated hydraulic control device

Info

Publication number
DE1220285B
DE1220285B DEV18293A DEV0018293A DE1220285B DE 1220285 B DE1220285 B DE 1220285B DE V18293 A DEV18293 A DE V18293A DE V0018293 A DEV0018293 A DE V0018293A DE 1220285 B DE1220285 B DE 1220285B
Authority
DE
Germany
Prior art keywords
piston
control device
grinding
workpiece
grinding wheel
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
DEV18293A
Other languages
German (de)
Inventor
Werner Schulze
Eberhard Nicolai
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.)
Schwermaschinenbau Kombinat Ernst Thalmann VEB
Original Assignee
Schwermaschinenbau Kombinat Ernst Thalmann VEB
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 Schwermaschinenbau Kombinat Ernst Thalmann VEB filed Critical Schwermaschinenbau Kombinat Ernst Thalmann VEB
Priority to DEV18293A priority Critical patent/DE1220285B/en
Publication of DE1220285B publication Critical patent/DE1220285B/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • 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
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/02—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables
    • B24B47/06—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables by liquid or gas pressure only

Description

Handbetätigte hydraulische Steuereinrichtung Die Erfindung betrifft eine von Hand betätigte hydraulische Steuereinrichtung an einer Schleifmaschine zum Beseitigen von Oberflächenfehlem an Rund- und Quadratstahl, bei der Schleifscheibe und Werkstück gegeneinander verschiebbar sind und das Schleifwerkzeug an einem zweiannigen Pendelhebel angeordnet ist, der unter Federdruck oder einem übergewicht steht.Hand-Operated Hydraulic Control Device The invention relates to a manually operated hydraulic control device on a grinding machine for removing surface defects on round and square steel, on the grinding wheel and workpiece are displaceable against each other and the grinding tool on a two-man Pendulum lever is arranged, which is under spring pressure or an excess weight.

Es sind hierfür Einrichtungen bekannt, bei denen der Anpreßdruck der Schleifscheibe auf das Werkstück durch einen hydraulischen oder auch pneumatischen Trieb erzeugt wird und durch Ventile geregelt werden kann. Der Schleifdruck kann dabei an einem Manometer abgelesen werden, der Bedienungsmann ist aber nicht in der Lage, den Schleifdruck kontinuierlich entsprechend der Form des Fehlers am Werkstück zu verändern.There are facilities known for this, in which the contact pressure of Grinding wheel on the workpiece by a hydraulic or pneumatic Drive is generated and can be regulated by valves. The sanding pressure can can be read on a pressure gauge, but the operator is not in able to continuously adjust the grinding pressure according to the shape of the defect on the workpiece to change.

Der Erfindung liegt die Aufgabe zugrunde, eine Steuereinrichtung zu schaffen, die dem Bedienungsmann ein Gefühl für den jeweils herrschenden Anpreßdruck gibt und es gestattet, diesen Druck entsprechend der Form des auszuschleifenden Fehlers optimal anzupassen.The invention is based on the object of providing a control device create that gives the operator a feeling for the prevailing contact pressure there and it allows this pressure to be grinded out according to the shape of the To adapt the error optimally.

Erfindungsgemäß wird die Aufgabe dadurch gelöst, daß zwischen der Druckpumpe und dem Kolben-Zylinder-Aggregat des hydraulischen Triebs des Schleifpendels ein in einem Zylinder gelagerter, mittels des Handsteuerhebels hin- und herschiebbarer Steuerkolben vorgesehen ist, der an seinem Umfang eine in Achsrichtung des Kolbens konisch und spitz auslaufende Kerbe aufweist.According to the invention the object is achieved in that between the Pressure pump and the piston-cylinder unit of the hydraulic drive of the grinding pendulum one that is mounted in a cylinder and can be moved back and forth by means of the manual control lever Control piston is provided, the one in the axial direction of the piston on its circumference has a conical and pointed notch.

In der Zeichnung ist ein Ausführungsbeispiel des Erfindungsgegenstandes dargestellt. Es zeigt F i g. 1 ein Schema der Steuereinrichtung, F i g. 2 eine perspektivische Ansicht des Steuerkolbens.An exemplary embodiment of the subject matter of the invention is shown in the drawing. It shows F i g. 1 shows a diagram of the control device, FIG. 2 is a perspective view of the control piston.

Beim Einschalten der Druckpumpe 1 und zurückgezogener Stellung des Steuerkolbens 2 (Pfeilrichtung a) fließt das von der Druckpumpe 1 geförderte öl drucklos über den Zylinder 3 und die Ablaufbohrung 4 in den Behälter 5 zurück. Im Steuerkolben 2 befindet sich eine konische, spitz auslaufende Kerbe 6. Wird der Steuerkolben 2 durch den Handsteuerhebel 7 nach vorn (Pfeilrichtung b) geschoben, so wird die Ablaufbohrung 4 mehr oder weniger verdeckt und je nach Stellung des Steuerkolbens 2 durch den sich verkleinernden Querschnitt der Kerbe 6 dem Abfluß des öles ein erhöhter Widerstand entgegengesetzt. Im Zylinder 3 und damit auch in dem Kolben-Zylinder-Aggregat 8, 10 baut sich ein Druck auf. Die Schleifscheibe 9, die am um die Achse 13 pendelnden Arm 12 mit Verschiebegewicht 14 angeordnet ist, wird an das Werkstück gedrückt. Die auf den Steuerkolben 2 und damit auch auf den Handsteuerhebel 7 wirkende Kraft entspricht dabei dem Verhältnis der Kolbenflächen des Steuerkolbens 2 und des Kolbens 10 sowie der Schleifscheibe 9. Die bei vollständig geschlossener Ablaufbohrung 4 erreichbare Kraft kann am überströmventil 11 begrenzt werden.When the pressure pump 1 is switched on and the control piston 2 is in the retracted position (arrow direction a), the oil delivered by the pressure pump 1 flows back into the container 5 without pressure via the cylinder 3 and the drain hole 4. In the control piston 2 there is a conical, pointed notch 6. If the control piston 2 is pushed forwards by the manual control lever 7 (direction of arrow b) , the drain hole 4 is more or less covered and, depending on the position of the control piston 2, by the decreasing cross-section the notch 6 opposes an increased resistance to the drainage of the oil. A pressure builds up in the cylinder 3 and thus also in the piston-cylinder unit 8, 10. The grinding wheel 9, which is arranged on the arm 12 oscillating about the axis 13 with a sliding weight 14, is pressed against the workpiece. The force acting on the control piston 2 and hence also to the manual control lever 7 corresponds to the ratio of the piston surfaces of the control piston 2 and the piston 10 and of the grinding wheel 9. The achievable with fully closed flow bore 4 force can be limited at the overflow valve. 11

Claims (1)

Patentanspruch: Von Hand betätigbare hydraulische Steuereinrichtung an einer Schleifmaschine zum Beseitigen von Oberflächenfehlem an Rund- und Quadratstahl, bei der die Schleifscheibe und das Werkstück gegeneinander verschiebbar sind und die an einem zweiarnügen Pendelhebel angeordnete Schleifscheibe durch einen hydraulischen Trieb gegen übergewicht und Federdruck an das Werkstück andrückbar ist, d a d u r c h g e k e n n -z e i c h n e t, daß zwischen der Druckpumpe (1) und dem Kolben-Zylinder-Aggregat (8, 10) des hydraulischen Triebs des Schleifpendels (9, 12, 13) ein in einem Zylinder (3) gelagerter, mittels des Handsteuerhebels (7) hin- und herschiebbarer Steuerkolben (2) vorgesehen ist, der an seinem Umfang eine in Achsrichtung des Steuerkolbens (2) konisch und spitz auslaufende Kerbe (6) aufweist. In Betracht gezogene Druckschriften: Deutsche Patentschriften Nr. 876 664, 1077 559; USA.-Patentschriften Nr. 2 876 598, 2 845 751, 2 797 532, 2 750 714, 2 741070. Claim: Manually operated hydraulic control device on a grinding machine for removing surface flaws on round and square steel, in which the grinding wheel and the workpiece can be moved relative to one another and the grinding wheel, which is arranged on a two-way pendulum lever, can be pressed against the workpiece by a hydraulic drive against excess weight and spring pressure is d a d u rch g e k hen -zeichnet in that between the pressure pump (1) and the piston-cylinder unit (8, 10) of the hydraulic drive of the grinding pendulum (9, 12, 13) in a cylinder (3 ) mounted control piston (2) which can be pushed back and forth by means of the manual control lever (7) is provided, which has a notch (6) which tapers conically and pointedly in the axial direction of the control piston (2) on its circumference. Considered publications: German Patent Specifications No. 876 664, 1077 559; USA. Patent Nos. 2,876,598, 2,845,751, 2,797,532, 2,750,714, 2,741,070.
DEV18293A 1960-03-19 1960-03-19 Hand-operated hydraulic control device Pending DE1220285B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEV18293A DE1220285B (en) 1960-03-19 1960-03-19 Hand-operated hydraulic control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEV18293A DE1220285B (en) 1960-03-19 1960-03-19 Hand-operated hydraulic control device

Publications (1)

Publication Number Publication Date
DE1220285B true DE1220285B (en) 1966-06-30

Family

ID=7576993

Family Applications (1)

Application Number Title Priority Date Filing Date
DEV18293A Pending DE1220285B (en) 1960-03-19 1960-03-19 Hand-operated hydraulic control device

Country Status (1)

Country Link
DE (1) DE1220285B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4062151A (en) * 1975-10-08 1977-12-13 Sunds Aktiebolag Billet grinding machine
FR2482820A1 (en) * 1980-05-20 1981-11-27 Rexroth Gmbh G L THREADING VALVE FOR A DRIVE MECHANISM CONTROL CIRCUIT

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE876664C (en) * 1949-03-19 1953-05-18 Luke & Spencer Pendulum grinding machine
US2741070A (en) * 1953-03-30 1956-04-10 Mid West Abrasive Co Swing grinder
US2750714A (en) * 1950-12-04 1956-06-19 Mid West Abrasive Co Swing grinder
US2797532A (en) * 1952-04-01 1957-07-02 Crucible Steel Co America Billet grinder
US2845751A (en) * 1955-01-10 1958-08-05 Mid West Abrasive Co Metal working machine
US2876598A (en) * 1957-01-10 1959-03-10 Allegheny Ludlum Steel Grinding machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE876664C (en) * 1949-03-19 1953-05-18 Luke & Spencer Pendulum grinding machine
US2750714A (en) * 1950-12-04 1956-06-19 Mid West Abrasive Co Swing grinder
US2797532A (en) * 1952-04-01 1957-07-02 Crucible Steel Co America Billet grinder
US2741070A (en) * 1953-03-30 1956-04-10 Mid West Abrasive Co Swing grinder
US2845751A (en) * 1955-01-10 1958-08-05 Mid West Abrasive Co Metal working machine
US2876598A (en) * 1957-01-10 1959-03-10 Allegheny Ludlum Steel Grinding machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4062151A (en) * 1975-10-08 1977-12-13 Sunds Aktiebolag Billet grinding machine
FR2482820A1 (en) * 1980-05-20 1981-11-27 Rexroth Gmbh G L THREADING VALVE FOR A DRIVE MECHANISM CONTROL CIRCUIT

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