Use of drill bits:

1, the drill should be installed in a special packaging box to avoid vibration collision with each other.

2, when in use, remove the drill from the packaging box should be installed in the spring clamp of the spindle or automatically replace the drill tool library. Put it back in the box when you're done.

3, the diameter of the drill should be measured with a tool microscope and other non-contact measuring instruments to avoid cutting edge contact with the mechanical measuring instrument and be hurt.

4, some CNC drilling machines use positioning rings Some CNC drilling machines do not use positioning rings, such as the use of positioning rings when the depth of its installation must be accurate, if not the use of positioning rings its drill to the spindle of the extension length to adjust the same, the multi-spindle drilling machine should pay attention to this point, to make each spindle drilling depth to be consistent. If the inconsistency may cause the drill bit to drill into the table or fail to drill through the board resulting in scrap.

5, usually can use 40 times the stereo microscope to check the drill cutting edge wear.

6, always check the concentricity of the spindle and the spring chuck and the clamping force of the spring chuck, the concentricity is not good, resulting in small diameter drill break and large aperture, etc., clamping force is not good, resulting in the actual speed and the set speed does not meet, between the chuck and the drill.

7, the clamping length of the fixed handle drill bit in the spring chuck is 4 to 5 times the diameter of the drill handle to clamp firmly.

8, always check the spindle press foot. The contact surface of the press foot should be horizontal and perpendicular to the spindle, and cannot be shaken to prevent broken drilling and deviation holes in the drilling.

9, the suction effect of the drilling machine is better, the suction air can reduce the temperature of the drill, and the dust taken by the colleague can reduce the friction and produce high temperature.

10, the substrate lamination including the upper and lower plate should be positioned firmly and flat in the one-hole and one-slot positioning system on the drilling machine's workbench. When using the adhesive tape, prevent the drill bit from sticking chips on the tape, which may cause chip removal difficulties and drill breakage.

11, ordering the manufacturer's drill, in the factory inspection to spot check whether 4% of its compliance with the regulations. And 100% with 10 to 15 times the microscope to examine the notch, abrasion and cracks.

12, the bit timely regrinding, can increase the use of the bit and the number of regrinding, extend the life of the bit, reduce production costs and expenses. Usually measured with a tool microscope, the wear depth should be less than 0.2mm within the full length of the two main cutting edges. Remove 0.25mm when regrinding. You can undercut a regular fixed-handle bit three times, you can undercut a bit twice. Turning over too much of its drilling quality and accuracy will be reduced, resulting in the scrap of circuit board finished products. Excessive grinding has the opposite effect.

13, when due to wear and its wear diameter is reduced by 2% compared with the original, the bit is scrapped.

14, the setting of drill parameters In general, the manufacturer provides a production of drill drill drill speed and down the speed of the parameter table, the parameter is only a reference, the actual process personnel through the actual use of a drill speed and down the speed of the actual situation of the parameters, usually the actual parameters and the reference parameters are different but not too much difference.