Causes and solutions of common problems in reaming

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Causes and solutions to common problems in reaming with multi blade reamers

9) when installing reamers, the oil on the surface of the taper shank is not wiped clean, or the taper surface is knocked or bruised

10 through the collision of information and wisdom) the flat tail of the taper shank is offset, and it interferes with the taper of the taper shank after being installed into the machine tool spindle

11) the spindle bend has made a comprehensive revision to the original GB8624 (1) 997 version of our country, or the spindle bearing is too loose or damaged

12) the reamer is not flexible in floating, Different from the workpiece, the shaft

13) when reaming by hand, the force of both hands is uneven, making the reamer shake left and right

8) select the cutting fluid with better cooling performance

9) before installing the reamer, the oil stain inside the reamer taper handle and the taper hole of the machine tool spindle must be wiped clean in fact, and the conical surface with bumps and bruises should be polished with oilstone

10) grinding the eccentric tail of the reamer

11) adjusting or replacing the spindle bearing

12) readjusting the floating chuck, And adjust the coaxiality

13) pay attention to the correct operation

6) the reamer has been worn, and the worn part has not been worn off during grinding

7) when reaming thin-walled steel parts, the elasticity of the inner hole recovers after reaming, reducing the aperture

8) when reaming, the allowance is too large or the reamer is not sharp, it is also easy to produce elastic recovery, reducing the aperture

9) the inner hole is not round, and the aperture is unqualified

6) replace the reamer regularly, Correctly sharpen the cutting part of the reamer

7) this factor should be considered when designing the reamer size, or take value according to the actual situation

8) make experimental cutting and take appropriate allowance

sharpen the reamer

9) see that the inner hole is out of round

7) the main shaft bearing is loose, there is no guide sleeve, or the fit gap between the reamer and the guide sleeve is too large

8) due to the tight clamping of the thin-walled workpiece, the workpiece deforms after removal

6) select qualified blanks

7) when using the holes with precise equal pitch reamers, the fit gap between the main shaft of the machine tool and the guide sleeve should be higher

8) adopt appropriate clamping methods, Reduce the clamping force

5) the reaming allowance is uneven or too small, and the local surface is not reamed to

6) the runout of the cutting part of the reamer is out of tolerance, the edge is not sharp, and the surface is rough

7) the blade band of the reamer is too wide

8) poor chip removal during reaming

9) the reamer is excessively worn

10) the reamer is bruised, If there is burr or chipping on the edge, it must ensure that the gripper of the rubber tensile testing machine has enough travel edge

11) there is debris accumulation tumor on the edge

12) due to the material relationship, it is not applicable to the zero rake angle or negative rake angle reamer

7) grinding the width of the blade belt

8) reduce the number of reamer teeth and increase the chip space according to the specific situation; Or use the reamer with blade inclination to make the chip removal smooth

9) replace the reamer regularly and grind all the wear areas away during grinding

10) take protective measures for the reamer during grinding, use and transportation to avoid bumping and bruises; For the reamer that has been bruised, use extra fine oilstone to repair the knock and bruise, or replace the reamer

11) trim it to qualified with oilstone

12) use the reamer with front angle of 5 ~ 10

1) select the reamer material according to the processing material, and can use carbide reamer or coated reamer

2) strictly control the cutting amount of edge grinding to avoid burns

3) correctly select the cutting fluid according to the processing material

often remove the chips in the chip groove, and use cutting fluid with sufficient pressure

4) meet the requirements through fine grinding or grinding

1) the drilling hole before reaming is not straight, especially the hole diameter is small, and the original curvature cannot be corrected due to the poor rigidity of the reamer

2) the main deflection angle of the reamer is too large, and the guidance is poor, Make the reamer easy to deviate from the direction in reaming

3) the reverse taper of the cutting part is too large

4) the reamer moves at the middle gap of the intermittent hole

5) when reaming by hand, the force is too large in one direction, forcing the reamer to deflect to one side, destroying the verticality of the reamed hole

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