Opérations de la scie

Coupes spéciales

La coupe de matériaux courbés et de matériaux ronds ne constitue qu’un exemple de coupes spéciales.

Coupe de matériaux courbés

! AVERTISSEMENT Si l’ouvrage 1 est courbé ou gondolé, cramponnez-le 2 avec la face courbée

extérieure dirigée vers le guide 3. Assurez-vous toujours de l’absence d’un écartement entre l’ouvrage, le guide et la table le long de la ligne de coupe 4. Les ouvrages pliés ou gondolés peuvent se tordre ou culbuter, et peuvent faire gripper la lame de scie en rotation durant la coupe (Figure 32).

Coupe de matériaux ronds ou de forme irrégulière

! AVERTISSEMENT

Pour les matériaux ronds 5 tels que

 

les goujons ou les tubes, utilisez

 

toujours un serre-joint 6 ou un dispositif conçu de manière à cramponner l’ouvrage fermement contre le guide 7 et la table. Les goujons ont tendance à rouler pendant qu’on les coupe, ce qui amène la lame à « mordre » et tire l’ouvrage et votre main dans la lame (Figure 33).

Coupe de matériaux fins et larges

Si l’ouvrage 10 est fin et large et doit être coupé en position verticale, cramponnez-le contre le guide 9 avec un serre-joint "C" selon l’illustration de la Figure 34.

Operaciones de la sierra

Cortes especiales

Los cortes de material arqueado y de material redondo son solamente ejemplos de cortes especiales.

Corte de material arqueado

! ADVERTENCIA

Si la pieza de trabajo 1 está arqueada o

 

combada, fíjela con abrazadera 2 con la

 

cara exterior arqueada orientada hacia el tope-guía 3. Asegúrese siempre de que no haya espacio libre entre la pieza de trabajo, el tope- guía y la mesa a lo largo de la línea de corte 4. Las piezas de trabajo dobladas o combadas pueden torcerse u oscilar y pueden causar atasco en la hoja de sierra que gira durante el corte (Figura 32).

Corte de material redondo o que tenga forma irregular

!ADVERTENCIA Para material redondo 5, tal como va- rillas con espiga o tubos, use siempre

una abrazadera 6 o un dispositivo de sujeción diseñado para fijar la pieza de trabajo firmemente contra el tope-guía 7 y la mesa. Las varillas tienen tendencia a rodar mientras son cortadas, haciendo que la hoja “muerda” y tire de la pieza de trabajo con la mano del operador hacia la hoja (Figura 33).

Corte de material ancho y delgado

Si la pieza de trabajo 10 es delgada y ancha, y es necesario cortarla en posición vertical, sujete dicha pieza de trabajo contra el tope-guía 9 con una abrazadera en "C" 8 de la manera que se muestra en la Figura 34.

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Bosch Power Tools 3924-24, 3918 manual Coupes spéciales, Cortes especiales

3924-24, 3918 specifications

Bosch Power Tools has long been a leader in innovation and quality within the power tool industry, and its models 3918 and 3924-24 are prime examples of their commitment to performance and reliability. These tools are designed for both professionals and DIY enthusiasts, providing efficient solutions for a variety of tasks.

The Bosch 3918 is primarily a reciprocating saw that features a robust 6.5-amp motor, delivering impressive power for cutting through wood, metal, and other materials. One of its standout features is the tool-less blade change system, which allows users to switch blades quickly and easily without needing additional tools. This is not only time-saving but also enhances the user experience by minimizing downtime between cuts.

The saw also boasts a variable speed dial that can reach up to 2,700 strokes per minute, giving users optimal control over their cutting tasks. The pivoting shoe provides increased stability and allows for precise cuts in various applications. Additionally, the saw includes an electronic motor protection system, which helps prevent overheating and extends the lifespan of the tool.

On the other hand, the Bosch 3924-24 is a powerful angle grinder. With a 6.0-amp motor, it delivers high performance while being compact and lightweight. The grinder comes with a soft grip handle, making it comfortable for extended use. Its one-touch guard allows users to adjust the guard without any tools, thus enhancing convenience during operations.

This model is equipped with a direct-drive motor that increases torque and ensures that it works efficiently under load. The 3924-24's efficient dust management system minimizes dust and debris, providing a cleaner workspace and improving visibility during operations. Additionally, the grinder features a two-position side handle for added control and stability, making it suitable for a variety of grinding, cutting, and polishing applications.

Both Bosch Power Tools models, 3918 and 3924-24, exemplify the brand's commitment to quality, safety, and user ergonomics. Their advanced features, robust construction, and innovative technologies make them indispensable tools for any serious craftsman or home improvement enthusiast. Bosch continues to enhance its tools with practical features that reflect the needs of its users, ensuring that professionals get the results they demand while maintaining ease of use.