Advantages of U-drilling in deep hole machining and considerations

Shallow hole drills are often called U-drills, violent drills, and water-filled drills. The bottom of the drill is equipped with a water outlet hole, which makes it highly efficient compared to ordinary drills, and allows the machining of holes up to 5 times deeper than the diameter of the hole with a high degree of stability of the tool.

Advantages of U-drill

1.U drill first of all with ordinary drill is the difference between the U drill blade peripheral blade and the center of the blade, in this point of view, U drill and ordinary hard drilling relationship with the clamping tool and welding tool relationship is almost the same, no need to resharpen the tool wear directly replace the blade can be. After all, the use of indexable inserts than the whole hard drill to save material, and the consistency of the inserts easier to control the size of the parts.

2. The rigidity of U-drill is better, it can adopt high feed rate, and the machining diameter of U-drill is much larger than normal drill, the most. U drill can reach D50~60mm, of course, U drill can't be made too small due to the characteristics of the mounted insert.

3. U-drill encountered a variety of materials only need to replace the same type of different grades of inserts can be, hard drilling is not so convenient.

4. Compared with the hard drill, U drill out of the hole precision is still a little higher, and finish to be good, especially when the cooling lubrication is not smooth, more obvious, and U drill can be corrected hole position accuracy, hard drill then can not be, you can use the U drill as a rifled knife over the center.

Points to note on the use of U-drill:

1. The installation of U-drill should pay attention to the positive and negative direction, which blade is upward, which blade is downward, which faces inward, which faces outward.

2. The center height of the U-drill must be corrected, according to its diameter size to require control range, generally controlled within 0.1mm, the smaller the diameter of the U-drill, the higher the center height requirements, the center height is not good U-drill the second side of the wear and tear, the hole diameter will be large, the service life of the blade to shorten the U-drill is small if it is very easy to break.

3. U-drill on the coolant requirements are very high, must ensure that the coolant from the center of the U-drill shot, the coolant pressure should be the greater the better, you can plug up the excess water outlet of the turret to ensure that its pressure.

4. The cutting parameters of U-drill should be in strict accordance with the manufacturer's instructions, but also take into account the different brands of inserts, the power of the machine tool, the machining can be referred to the size of the load value of the machine tool, to make the appropriate adjustments, generally using a high speed, low feed.

5. U-drill inserts should be checked frequently and replaced in time, and different inserts should not be installed in reverse.

6. Adjust the feed amount according to the hardness of the workpiece and the length of the tool overhang, the harder the workpiece is, the larger the tool overhang is, and the smaller the amount of travel should be.

7. Do not use excessive wear of the blade, should be recorded in the production of blade wear and the number of workpieces can be processed in relation to the timely replacement of new blades.

8. Use adequate and correctly pressurized internal coolant. The main function of the coolant is chip removal and cooling.

9.U-drill can not be used for processing softer materials, such as copper, soft aluminum, etc..

(referred to as Ligong equipment) is a set of professional R & D, design, manufacture, sales, service CNC precision drilling machine and precision CNC machine tools, high-tech enterprises, with more than 15 years of vertical deep hole drilling, precision CNC machine tools R & D experience, the company's independent research and development and production of "Ligong" vertical deep hole drilling, CNC precision drilling machine and other series of products after a long period of technological precipitation and accumulation, and With the leading technology, we have become a leading company in the vertical deep hole drilling industry, and with the increasing market share, we enjoy a high brand awareness in the market and are widely recognized by customers.