DE19537082A1

DE19537082A1 - Clamping of rod and blanks inside shears

Info

Publication number: DE19537082A1
Application number: DE1995137082
Authority: DE
Inventors: Kurt Wengenroth
Original assignee: SCHUBERT MASCHINEN und ANLAGEN
Current assignee: SCHUBERT MASCHINEN und ANLAGEN
Priority date: 1995-10-05
Filing date: 1995-10-05
Publication date: 1997-06-19

Abstract

The clamp holds rods and blanks in a shearing machine. The process-linked time controlling of the oil pressure for the thrust and clamping force necessary during the shearing procedure is carried out by the purely mechanical opening and closing of scavenge channels (18). This is achieved by a geometrically defined edge on an insert plate (19) which is itself controlled by the shearing movement of the moving cutter. The time point for the oil pressure drop with the machine running is enabled by axial displacement of an adjustment spindle (15) by turning a handwheel (20).

Description

Use case

Die nachstehend beschriebenen Baugruppen dienen nach Anbau an eine geeignete Maschine zum verformungsarmen und rechtwinkligen Scheren von Stabstählen und NE-Metallen.The assemblies described below are used after mounting on a suitable machine for low-deformation and right-angled shears of steel bars and non-ferrous metals.

Es werden durch dieses System Scherergebnisse in höchster Qualität erzielt.This system produces the highest quality shear results achieved.

user

Überwiegende Anwendung in der Kalt- und Warmumformung sowie in allen Bereichen, wo gewichts- bzw. volumengenaue Scherlinge für die Weiter verarbeitung gefordert werden.Mainly used in cold and hot forming as well as in all Areas where weight and volume accurate hemlocks for the next processing.

Description of the invention 1. Section holder

Aufgabe:
Der Abschnitthalter soll vor dem Abscheren des Stabes den Scherling abstützen und ein Abbiegen und größeren Einzug an der Scherkante beim Schneidvorgang vermeiden.
Lösung:
Der in ein zweiteiliges Gehäuse Pos. 8 + 1 eingebaute Stößel Pos. 14 wird über die Gewindehülse Pos. 15 und den hydraulisch vorge spannten Kolben Pos. 21 vorgefahren und hindert den Stab scher seitig abzubiegen.Task:
The section holder should support the hemlock before shearing off the rod and avoid bending and drawing in at the shear edge during the cutting process.
Solution:
The plunger pos. 14 installed in a two-part housing pos. 8 + 1 is advanced via the threaded sleeve pos. 15 and the hydraulically preloaded piston pos. 21 and prevents the rod from shearing.

Special design features

1.1 The prestressed oil column is not over a cut Pressure valve derived, but compen in a pressure accumulator siert (very low energy dissipation in heat).
1.2 The pressure is constant, so there is no switching valve required.
1.3 The plunger remains adjustable from the outside even during the working stroke through the spindle item 16 .

2. Bar holder

Aufgabe:
Der Stangenhalter soll vor dem Schervorgang den Stab stangenseitig abstützen und ein Abbiegen sowie größeren Einzug an der Scherkante vermeiden.
Lösung:
Der in ein Gehäuse eingebaute Stößel Pos. 5 wird über das Druck stück Pos. 17, den Keil Pos. 26 und die Rollengabel Pos. 14 mit Kurvenrolle von einer Kurvenscheibe angesteuert.Task:
The rod holder should support the rod on the rod side prior to the shearing process and avoid bending and large indentation at the shear edge.
Solution:
The plunger pos. 5 installed in a housing is controlled by a cam plate via the pressure piece pos. 17 , the wedge pos. 26 and the roller fork pos. 14 with cam roller.

Special design features:

2.1 Purely mechanical forced control, no additional tax times.
2.2 The wedge system in connection with the adjusting sleeve pos. 8-12 serves in its construction as an adjustment of the plunger and at the same time by deflecting the wedge in the event of overload as a break protection.

3. Length stop

Aufgabe:
Das maßhaltige Abstoppen eines auflaufenden Stabes und die Ein leitung des Schervorganges mit anschließendem Ablüften, um den Scherling freizugeben.
Lösung:
Der mit einer sensorüberwachten Anschlagspitze Pos. 3-4 ausgerüstete Anschlagschlitten Pos. 68 wird über eine Stellspindel Pos. 72 mit Gleitstein Pos. 27 und Gelenkhebel Pos. 40 bis 43 durch eine Steuerstange Pos. 33 von der Exzenterwelle angetrieben.Task:
The accurate stopping of an accruing rod and the initiation of the shearing process with subsequent ventilation to release the hemlock.
Solution:
The stop slide item 68 equipped with a sensor-monitored stop point item 3-4 is driven by the eccentric shaft via an adjusting spindle item 72 with sliding block item 27 and articulated lever item 40 to 43 through a control rod item 33 .

Special design features

3.1 By mechanical control via the drive shaft The control times of the machine can be very precisely and without Set non-tax times.
3.2 The stop system depends on the type of control from the machine frequency.
3.3 Incorrect switching can be excluded by 3.2.

Claims

1. Device within scissors for clamping rod rod ( 4 ) and section ( 5 ) during the shearing process is characterized in that the tied-up timing of the oil pressure for the holding and clamping force required during the shearing process via the purely mechanical opening and closing of Rinsing channels ( 18 ) through a geometrically defined edge on an insert plate ( 19 ), which is controlled by the shearing movement of the movable knife itself.

2. Apparatus according to claim 1, characterized in that the time for the oil pressure drop during the running machine by axial displacement of an adjusting spindle ( 15 ) with a handwheel ( 20 ) is possible.

3. Apparatus according to claim 1, characterized in that the adaptation of the counter-holder ( 12 ) to the geometric conditions of the rod ( 4 ) and section ( 5 ) during the running machine via a thread pitch by turning an adjusting spindle ( 15 ) with a handwheel ( 16 ) is possible.