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Method of producing a micro- or nano-mechanical part, comprising a femto-laser-assisted ablation step

A mechanical part, micron-level technology, used in the production of transmission parts, those transmission parts in clock/watch manufacturing, can solve problems such as difficulty in control, limit the accuracy of the ablation zone, limit the shape, etc., to achieve the effect of short duration

Inactive Publication Date: 2007-10-03
TAG HEUER SA
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

These methods are limited when used to process small dimensions, or materials that cannot withstand vibration or thermal constraints
In fact, it has been observed that heat transport in the material limits the precision of the ablated zone during the passage of pulses, even in a continuous process.
In addition, the ablation zone of conventional lasers conforms to the cylindrical shape of the beam, which limits the shapes that can be machined
The depth of machining depends on the power of the laser beam and the properties of the material, which is difficult to control

Method used

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  • Method of producing a micro- or nano-mechanical part, comprising a femto-laser-assisted ablation step
  • Method of producing a micro- or nano-mechanical part, comprising a femto-laser-assisted ablation step
  • Method of producing a micro- or nano-mechanical part, comprising a femto-laser-assisted ablation step

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Embodiment Construction

[0055] The device shown in Figure 1 is used to produce parts 10, this device is a synchronous or asynchronous transmission device, is used for transmitting motion or power, and it comprises:

[0056] Working surface 11, in this example 6 programmable axes (A, B, C, X, Y, Z) and holding device 12 (e.g. fastening splints, adhesives, magnets, vacuum, etc. system). The above-mentioned axes are controlled by the micron-level automatic machining program executed by the information processor 17 by means of compensation or updating means.

[0057] The information processor 13 mainly has a three-dimensional model software, such as a three-dimensional CAD system.

[0058] A femtosecond-type ultrashort pulse laser 14 with an optical head 15 for concentrating the emission of a laser beam 16 in a focal area.

[0059] Displacement control / manipulation information processor 17

[0060] Machining method

[0061] The information processor 13 can be constituted by such as a personal computer...

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Abstract

The invention relates to a method of producing a micro- or nano-mechanical part, such as a pulley or belt for clock making, comprising a laser ablation step which is performed with the aid of a femto-laser, i.e. a laser having a pulse with a duration of less than 5x10<-13> seconds and a power of more than 10<12 >watts on the beam / material interaction surface. According to the invention, the part to be machined is pre-modelled in three dimensions and said three-dimensional model is used to generate the machining programme.

Description

technical field [0001] The invention relates to a method for producing micron-scale mechanical parts and nano-scale mechanical parts [0002] The invention also relates to parts produced by the above-mentioned method, and these parts are used in the field of watchmaking or other fields, such as measuring instruments, optics, optoelectronics, etc., or other fields requiring high machining accuracy, but excluding burning erosion of biomaterials. [0003] The invention also relates to a method of producing transmission elements, such as belts, pulleys, gears, etc., in particular those used in clock / watch manufacture Background technique [0004] International application WO04006026 describes a clock / watchmaking device utilizing a belt or pulley for transmission. Timepiece movements provided with gears or other types of synchronous or asynchronous transmissions are well known. However, there is often a need to miniaturize the components of such mechanisms. [0005] The produ...

Claims

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Application Information

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IPC IPC(8): B23K26/40B23K26/06
CPCB23K26/402B23K26/0635B23K26/4065B23K26/408B23K26/4085G04D3/0069B23K26/0624B23K26/40B23K2103/16B23K2103/172B23K2103/42B23K2103/50B23K2103/52
Inventor G・塞蒙
Owner TAG HEUER SA
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