e former reamer supplier star long has introduced some common problems and solutions to the deep hole processing of the cutting tools.
First, there is a problem: the reamer’s service life is low.
1. The causes are: the reamer material is not suitable, the cutting fluid is not suitable, the cutting fluid is not flowing smoothly, and the surface roughness of the cutting and hinged cutting edges is too high.
2, the solution: the hard alloy reamer or coating reamer can be used to select the reamer material according to the processing material; the cutting fluid is regularly selected according to the processing material; the chips in the chip groove are often cleared, and the cutting fluid with sufficient pressure is used to meet the requirements through fine grinding or grinding.
Two. There is a problem: the shank of the reamer is broken.
1. The reason is: the reamer hole allowance is too large; when the reaming hole is reamed, the allowance distribution and the choice of the cutting amount are not suitable; the space of the reamer blade is small and the chip is blocked.
2, the solution: modifying the size of the pre processing aperture, modifying the allowance distribution, selecting the cutting amount reasonably, reducing the number of reamer teeth, increasing the space of the capacity of the chip, or grinding the gap between the cutter teeth.
Three, there is a problem: the position of the articulated hole is very poor.
1. Causes: wear of guide sleeve; too far end of guide sleeve from workpiece; short length of guide sleeve, poor accuracy and loose spindle bearing.
2, the solution: replace the guide sleeve regularly; lengthen the guide sleeve to improve the coordination precision of the clearance between the guide sleeve and the reamer; repair the machine tool and adjust the clearance of the spindle bearing in time.
Four. There is a problem: the cutting edge of the reamer.
1, the causes are: too large reamer hole allowance; high hardness of the workpiece material; the cutting edge is too large and the cutting load is not uniform; the main angle of the reamer is too small to increase the cutting width; when the hinges or the blind holes are reamed, the chip is too much, and it is not cleared in time and sharpened when the blade is sharpened.
2, the solution: modify the size of the pre processing diameter; reduce the material hardness or use the negative front angle reamer or hard alloy reamer; control the swing difference within the qualified range; increase the main deflection angle; pay attention to remove the chip in time or take the blade with the blade inclination angle; pay attention to the quality of the grinding.
Five, there is a problem: after reaming, the center line of the hole is not straight.
1. The causes are: the borehole deviation before the hinges, especially the smaller aperture, can not correct the original bending degree due to the poor rigidity of the reamer; the reamer’s main deflection angle is too large; the guide is bad, the reamer is easily deviated from the direction in the reaming; the cutting part is overlarge; the reamer is displaced at the gap in the intermittent hole; when hand hinges hole, in hand hinges hole, The force is too large in one direction, forcing the reamer to deflect to one end, which destroys the verticality of reaming.
2, the solution: increase the correction hole in the hole reaming or boring process; reduce the main deflection angle; adjust the appropriate reamer; change the reamer with the guiding or lengthening parts; pay attention to the correct operation.
