ドリルとザグリは同じものですが、異なる役割を果たします。 どちらも穴あけに刃先を使用しています。 ドリルは下の穴を開け、座ぐりはドリルによって開けられた下の穴を拡大します。

The application range of φ25-φ65 is φ25-φ65, the single-sided reaming allowance is 1mm10mm, lathe and special deep hole boring machine can be used, push boring and pull boring can be realized, reaming stability is good, reaming accuracy is relatively high, non-standard forming blind hole reaming drill can be customized according to customer requirements.

● Internal chip evacuation, easy loading and unloading of drill head and drill rod.

● The difficulty of chip removal is reduced accordingly, which makes the BTA drilling system suitable for processing large diameter deep holes.

● Large chip evacuation space. The total chip discharge section is about 1.26 times of the single chip outlet drill; the pressure requirement of cooling system is reduced for BTA drill.

● The torsional stiffness and vibration resistance of BTA drill is much higher than that of gun cobalt drill pipe, so BTA drill can be used with large feeds, which is beneficial to improve drilling efficiency and machining quality.

● The center of mass of the drill rod coincides with the central axis, and the torsional strength and stiffness are greater than those of the gun drill, which makes the BTA drill particularly suitable for drilling deep holes with the workpiece fixed and the drill bit rotating.

● Since the chips are discharged from the inside of the drill rod, the chips will not scratch the machined surface and the machined surface roughness is low.

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