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Machining of sheet without removal material

A plate and flat plate technology, which is applied in the field of plate mechanical processing without removing materials and its devices, can solve the problems of high speed of advancement, difficulty in obtaining products without bending and rolling, etc.

Inactive Publication Date: 2004-03-17
MICHELIN RECH & TECH SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, where rolling makes the thickness of the sheet smaller, the speed of advance will become greater, which will generate very large internal stresses in the sheet being rolled, and therefore, it is difficult to obtain bending-free Rolled Products

Method used

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  • Machining of sheet without removal material
  • Machining of sheet without removal material
  • Machining of sheet without removal material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The processing device shown in Figures 1 to 4 comprises a frame 11 which supports a clamping device 16 holding two flat plates 161 and 162 mounted opposite each other so as to form a nominal opening between said flat plates 161 and 162 1. The device comprises a means for forcing the movement of the sheet relative to the nominal opening, ie a platen 15 capable of gripping the sheet 2 and moving relative to said plates 161 and 162 . This pressing plate 15 pulls the sheet 2 . In a movement away from the plates 161 and 162 , the platen is not too far from the plane perpendicular to the plane of the nominal opening 1 and passing through said opening.

[0023] In other words, the sheet passes through the nominal openings constituting a die not for drawing the wire, but for processing the sheet. However, the present invention is quite different from the analogous case of drawing because of the shape of the opening formed, which forms a new dimension for the sheet.

[0024] ...

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PUM

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Abstract

The present invention relates to a method and device for machining a sheet, which contains a jaw equipped with two plates mounted opposite each other in order to delimit a calibration opening between said plates in which it is possible to vary the spacing between plates. A clamp is provided for grasping the sheet, and the clamp is moved in relation to said plates. The movement of the clamp and the relative position of said plates is coordinated, so as to slide the sheet in relation to said plates while the distance between said plates is controlled. The process includes pulling the sheet by one end so as to separate an initial section from the plane containing the calibration opening and thus pass the sheet through the calibration opening while the plates are kept supported against said sheet, so as to vary continuously the thickness of the sheet while the sheet is passed through the calibration opening.

Description

technical field [0001] The present invention relates to the machining of plates or even flat plates (comparable within the scope of the invention with plates) in order to obtain non-parallel surfaces on said plates. Background technique [0002] In the field of metallurgy, rough plates are usually obtained by rolling. In the rolling process, rolling can cause a difference in the advancing speed of the sheet between upstream and downstream, which results in an increase in the length of the sheet after rolling. Basically, in a process as described above, the dimensions of the sheet are changed while maintaining a rectangular profile (of a section perpendicular to the direction of movement). Typically, the resulting product has parallel surfaces, each with tolerances in the flatness of the surfaces and in the thickness between the surfaces. Calibration of the sheet material is generally necessary if it is desired to maintain flatness and / or thickness within tight tolerances. ...

Claims

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Application Information

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IPC IPC(8): B21C1/00B21C1/20B21C25/08B21C37/02B21D25/04B29C33/38B29L30/00
CPCB21C1/00B21C37/02
Inventor 贾恩卡洛·佩戈拉罗
Owner MICHELIN RECH & TECH SA
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