Although centring and spotting drills are similar in name, they are two different drilling tools, and their main application scenarios and principles are also different.
I. Definition and characteristics of centring drill
Centring drill is a kind of drilling tool used for drilling holes, also known as heart drill and arbor drill. The principle is that the tapered drill bit is designed so that it can be automatically centred in the hole to make the drilling more accurate. Centring drills are mainly used in drilling holes where the centre position and accuracy are required to be high, such as probe holes and pilot holes.
2. the definition and characteristics of centring drill
Centring drill is a kind of drilling tool used for drilling holes at specific position. Fixed-point drilling is mainly used in occasions where the position and angle of drilling holes are more complicated and high precision is required, such as machining, woodworking products processing and so on.
3. the difference between centring drills and fixed-point drills
Although the name of the centring drill and the fixed-point drill are similar, but their main application scenarios and principles are very different. Centring drills are suitable for the occasions that need to ensure the position and accuracy of the hole centre, while fixed-point drills are suitable for the occasions that need to drill holes in a specific position. In addition, centring drills are automatically centred by the geometry of the drill bit, whereas fixed-point drills drill holes in a specific position by means of a drilling bar on the drill bit. Therefore, the selection of drilling tools needs to be based on actual needs.
Conclusion
Centring drills and fixed-point drills are two different drilling tools with different main application scenarios and principles. Understanding their differences can help us to choose the right drilling tool more reasonably when we actually choose and use the drilling tool, and improve the working efficiency and drilling accuracy.
