ES2258893A1 - System for mechanizing panel of reduced thickness on support, has flexible lamina that is arranged on sustenation columns for determining continuous surface in piece - Google Patents

Abstract

The system has a flexible lamina (1) that is arranged on sustenation columns (3.1) for determining a continuous surface in a piece (2).

Description

Clamping system for panel machining of reduced thickness

Technical sector

The present invention is related to the machine tool sector and in particular with the machining of panels or sheets of little thickness, proposing a clamping system that allows to perform that function in some advantageous conditions, without risk of deformation of the parts of application by machining efforts.

State of the art

In the activities of certain industries As the aeronautics and similar sector, it is required usually the execution of cutting, machining, riveting, etc., in relation to large laminar pieces surface and reduced thickness.

To perform these works the mentioned laminar pieces must be fastened on a support support that adapts to the extension and form of the same, existing for this is flexible support systems that allow establishing the clamping the parts under the conditions mentioned, by mobile modules that incorporate sets of columns that in turn they are mobile on the corresponding modules and susceptible to vertical regulation

These multiflexible systems allow establish an adapted support through all its columns to the configuration of the pieces on which to work, determining by means of the mentioned columns a multiplicity of points where the application piece sits.

The lift that is established is based on punctual supports on which the sheet piece is loaded corresponding to the operations to be carried out, which in the case of the laminar pieces of little thickness and therefore of little transverse resistance, can lead to deformations caused by the incidence of specific support on the piece, also causing vibrations causing a poorly finished operations performed on the piece.

Object of the invention

In accordance with the present invention, a fastening system is proposed that provides very advantageous features for the aforementioned function of supporting thinly laminar pieces in machining operations to be performed thereon, overcoming the drawbacks of conventional solutions, by means of a very simple realization
lla.

This system object of the invention consists of the provision of a flexible sheet on the point support supports of the piece to be machined in a multiflexible support system, so that said sheet constitutes a continuous surface extension runner for the support of the piece of application, avoiding the problems of punctual supports
them.

The sheet of sufridera is provided with groups of through holes through it, which allow passage of air from the lift points to hold the piece of application by vacuum absorption or establish a support floating of the same by means of projection of air.

Between the groups of holes in the sheet In addition, surface grooves are provided by the upper part of said sheet, which determines a communication between the groups of holes that gives rise to an air chamber in much of the contact surface with the piece of application, thus allowing a fully effective action of the clamping vacuum or floating lift, in relation to the same.

Said system object of the invention results in therefore of certainly advantageous characteristics, acquiring own life and preferred character for the application function to the one that is destined.

Description of the figures

Figure 1 shows a perspective of the system object of the invention, with the piece to be held in disposition of assembly and an enlarged partial detail taken from the set.

Figure 2A is a front view of the system in the same arrangement of the previous figure.

Figure 2B is a view of the system with the workpiece supported in the lift position.

Figure 2C is a view of the system in the machining arrangement of the application part.

Detailed description of the invention

The object of the invention consists of a system intended for the support of thin sheet pieces in machining operations to be performed on them, establishing a support arrangement that avoids deformation of said parts by machining efforts.

The system comprises a flexible sheet (1) that is incorporated to act as a surface support bearing for the sheet piece (2) to be machined, arranged on a set of lift columns (3.1) that are part of a system of multiflexible support (3), as shown in figure 1.

The sufridera sheet (1) rests on the support columns (3.1), as shown in Figure 2A, adapting to the shape defined by the ends of those mentioned columns (3.1) in correlation with the configuration of the piece (2) to be supported, so that said sufridera sheet (1) determines a continuous surface for the support of the application part (2), as depicted in figure 2B.

Under such conditions the part (2) is supported  with continuous support of its entire surface on the sheet of suffridera (1), which avoids the punctual incidence of the supports in relationship with the support columns (3.1), so that said punctual incidence is absorbed by the sufridera sheet (1), preventing the application part (2) from suffering deformations

In the sheet of sufridera (1) groups of  through holes (1.1) distributed by the extension of the same, to through which the air passage is susceptible to establish the clamping of the piece (2) by vacuum by suction from the support columns (3.1), or to establish a support floating by air flow from the same columns {3.1). The workpiece (2) is thus secured with continuous support throughout its extension, avoiding deformations by pressure efforts of machining, as well as vibrations that could affect the result of the operations carried out, as represented by the figure 2C.

The groups of holes (1.1) of the sheet sufridera (1) are also provided communicated by grooves (1.2) defined at the top of the sheet (1), whereby on the support surface of the application piece {2) there is a chamber in which the absorption or impulsion of air transmitted from the support columns (3.1), thus achieving a totally effective action of restraint or floating support of the piece (2).

Claims (3)

1. Clamping system for machining panels of reduced thickness, of the type that is arranged on a set of support columns (3.1) that determine support points correspondingly with the shapes of the piece (2) to be fastened, characterized in that it incorporates a flexible sheet (1) that is supported on the support columns (3.1), determining a continuous surface of the bearing for the support of the piece (2). 2. Clamping system for machining of panels of reduced thickness, according to the first claim, characterized in that the sheet of sufridera (1) is provided with groups of through holes (1.1) distributed in its extension, for the passage of vacuum or air to through them in relation to the piece (2), from the support columns (3.1). 3. Clamping system for machining of panels of reduced thickness, according to the first and second claims, characterized in that the suffering sheet (1) has grooves (1.2) formed on the upper face, which establish communication between the groups of holes ( 1.1), determining a continuous chamber of application of the vacuum or air with respect to the piece (2).