DE20023699U1 - Workpiece machining or deforming device has C-shaped mounting consisting of lower and upper crossheads able to turn in enclosing frame - Google Patents

Abstract

The machining or deforming device consists of a C-shaped mounting with a table at the front open side and a vertical carrier for the workpiece. The mounting (2) consists of lower and upper crossheads (6, 7), which are able to turn in an enclosing frame (8). The web (9) of the C-mounting is formed by a hydraulic cylinder (10).

Description

The The invention relates to a device for processing or Forming workpieces, consisting of a C-shaped frame, on the front open side of a table and a vertical Moving device is provided with a tool.

Such Devices are for example as presses or the like. known. Also Other machines are known in the so-called C-construction. All these devices and machines have the disadvantage that their C-shaped frames during machining or during the forming of workpieces in the Area of their front open sides bends. This bending is generally very undesirable since this to stresses and bends on guides and the like. and thus too Inaccuracies on the workpiece leads.

Of the Invention is therefore based on the object, a device of specified genus, in which a bend of the C-shaped frame is largely avoided.

These The object is achieved by the Characteristics of the protection claim 1 solved.

Appropriate further education The invention are characterized in the subclaims.

By the formation of the web of the C-shaped frame as a hydraulic cylinder and the pivotable mounting of at least the upper crosshead of the Device can the force, for example, in hydroforming on the front open side of the C-shaped frame acts, counteracted so that none Bending of the frame occurs. The lower crosshead and the upper cross head enclosing Frame supported this.

By the arrangement of at least one hydraulic cylinder only as a rapid traverse cylinder Is it possible, that same has a smaller cross section than hydraulic cylinder with two functions, namely Rapid traverse and stop. The relatively small hydraulic cylinder in the area of the bridge of the C-shaped frame, which take over the function hold, enable An enormous cost saving, since so-called standard cylinder can be used.

In addition, fall also significantly less cost for a hydraulic power unit, as for the aforementioned cylinder a much lower power necessary is.

ever After tooling it is possible with the device according to the invention, by the number of hydraulic cylinders in the region of the web of the C-shaped frame as well as the individual control or regulation of the hydraulic cylinder the locking forces to vary the same, the pressure control due to the small amount of oil is very dynamic.

One embodiment the device according to the invention will be described below with reference to an in the drawing, for example in Side view (partially cut) described press described.

The device shown in the figures 1 for machining or forming workpieces consists essentially of a C-shaped frame 2 , at the front, open side 3 a table 4 as well as a vertical traversing device 5 is provided.

The C-shaped frame 2 consists of a lower crosshead 6 and an upper crosshead 7 which are in a same enclosing frame 8th are pivotally mounted, at least with the upper crosshead 7 in contact surface of the frame 8th is arched. The jetty 9 the C-shaped frame 2 is by hydraulic cylinder 10 formed, which are preferably designed as a short-stroke and after closing a locking device 11 a tool carrier 12 the conveyor 5 hold in its closed position, ie counteract the force during forming. To do this, the upper crosshead pivots 7 around a pivot point 13 , The ratio of the center distance 14 the conveyor 5 to the pivot axis 15 of the upper crosshead 7 and the center distance 16 the hydraulic cylinder 10 to the pivot axis 15 of the upper crosshead 7 is preferably 1: 2, whereby the hydraulic cylinder 10 can be chosen much smaller in their interpretation.

The moving device 5 is from at least one other hydraulic cylinder 17 formed, at the lower end of the tool carrier 12 is appropriate. This hydraulic cylinder 17 is only for the downward and upward movement in rapid traverse of the tool carrier 12 intended.

The device 1 still has one the tool carrier 12 in its lowest position, ie in the position in which the tool 18 for the forming process by means of the hydraulic cylinder 17 is closed, locking locking device 11 on. This locking device 11 consists in this embodiment essentially of a horizontally movable hydraulic cylinder 20 , at the front end between a tool carrier 12 and upper crosshead 7 retractable intermediate piece 21 is provided.

Every hydraulic cylinder 10 , whose number can be selected according to specific requirements, can be acted upon with different pressures, since the hydraulic cylinder 10 are individually controllable. Depending on the tool, this may be necessary if different clamping forces are necessary in certain areas of the same.

Also the number of lower and upper crossheads 6 . 7 and frame 8th is changeable depending on the size of the workpiece, with the table 4 in one piece over all lower crossheads or their entire width.

1

contraption

2

C-shaped frame of 1

3

front open side of 2

4

Table of 1

5

vertical moving device of 1

6

lower cross of 2

7

upper crosshead of 2

8th

Frame around 2

9

Footbridge of 2

10

Hydraulic cylinder between 6 and 7

11

locking device

12

Tool carrier of 5 at 17

13

Pivot point of 7 in 8th

14

Center distance of 5 to 15

15

Pivot axis of 7

16

Center distance of 10 to 15

17

Hydraulic cylinder from 5

18

Tool

19

-

20

Hydraulic cylinder from 19

21

Adapter on 20

Claims (6)

Apparatus for processing or workpieces, consisting of a C-shaped frame, on the front open side of a table and a vertical displacement device is provided with a tool, characterized in that the C-shaped frame ( 2 ) from a lower crosshead ( 6 ) and an upper crosshead ( 7 ), which are contained within a framework ( 8th ) are pivotally mounted, and that the web ( 9 ) of the C-shaped frame ( 2 ) by hydraulic cylinders ( 10 ) is formed. Device according to claim 1, characterized in that at least the one with the upper crosshead ( 7 ) in contact surface of the frame ( 8th ) is arched. Apparatus according to claim 1 or 2, characterized in that the ratio of the axial distance ( 14 ) of the shuttle ( 5 ) to the pivot axis ( 15 ) of the upper crosshead ( 7 ) and the center distance ( 16 ) of the hydraulic cylinders ( 10 ) of the bridge ( 9 ) of the C-shaped frame ( 2 ) to the pivot axis ( 15 ) of the upper crosshead ( 7 ) Is 1: 2. Device according to one of claims 1 to 3, characterized in that the traversing device ( 5 ) from at least one further hydraulic cylinder ( 17 ) is formed, at the lower end of a tool carrier ( 12 ) is attached. Device according to one of claims 1 to 4, characterized in that a tool carrier ( 12 ) in its lowermost position locking device ( 11 ) is provided. Device according to claim 5, characterized in that the locking device ( 11 ) substantially from a horizontally movable hydraulic cylinder ( 20 ), at its front end a between tool carrier ( 12 ) and upper crosshead ( 7 ) retractable intermediate piece ( 21 ) is provided.