Troubleshooting Measures for The Reamer

1. The larger the diameter of a reamer, the larger the error

Appropriately reduce the outer diameter of a reamer according to the specific situation, reduce the cutting speed, appropriately adjust the feed rate or reduce the machining allowance, reduce the entering angle, straighten or scrap the bent and unusable reamers.

Use oilstone to carefully trim them to pass the test, control the swing difference within the allowable range, choose a cutting fluid with better cooling performance, and wipe off the oil inside the taper shank of hdd rock reamers and the taper bore of the machine tool spindle before installing hdd rock reamers, and trim the bumps on the tapered surface with an oilstone.

Grind the flat tail of the reamer, adjust or replace the spindle bearing, re-adjust the floating chuck, and adjust the coaxial. Pay attention to the correct operation.

2. The aperture of a reamer is reduced

Change the outer diameter of the rock reamer, appropriately increase the cutting speed, appropriately reduce the feed rate, appropriately increase the entering angle, choose an oily cutting fluid with good lubrication performance, exchange the reamer regularly, and sharpen the cutting part of the reamer correctly.

When determining the size of the reamer, the above factors should be considered. Or the value should be selected according to the actual situation, for experimental cutting, take a suitable margin, and sharpen the rock reamer.

3. The inner bore of a reamer is not round

Reamers with unequal pitch can replace reamers with insufficient rigidity. The installation of reamers should adopt the method of rigid connection to increase the entering angle; use qualified reamers to control the bore position tolerance of the pre-processing process.

Adopt unequal pitch reamer, adopt a relatively long and precise guide sleeve, and select qualified blanks.

When using the equal pitch reamer to ream more precise bores, the clearance of the machine tool spindle should be adjusted, and the matching clearance of the guide sleeve should be required to be higher; the appropriate clamping method should be adopted to reduce the clamping force of the reamer.

4. The surface roughness value of the inner bore of a reamer is high

Reduce the cutting speed, select cutting fluid according to the processing material, appropriately reduce the entering angle, sharpen the reamer edge correctly, appropriately reduce the reaming allowance, improve the position accuracy and quality of the bottom bore before reaming, or increase the reaming allowance.

Choose a qualified reamer, sharpen the width of the blade, reduce the number of teeth of the reamer according to the specific situation, increase the space of the chip pocket or use a reamer with an inclination of the blade to make chip removal smooth.

Regularly replace the reamer and grind away the grinding area during sharpening. During the sharpening, use, and transportation of the reamer, protective measures should be taken to avoid hitting. For the reamer that has been hit, extra-fine oilstone should be used to repair the damaged reamer, or just replace the reamer. 

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5. The service life of a reamer is not long

According to the material to be processed, choose the material for a reamer, which can be a hard alloy reamer or coated reamer; strictly control the amount of sharpening and cutting to avoid burns.

The cutting fluid should be always selected correctly according to the processing material; the chips in the chip groove of the reamer should be often removed, and the cutting fluid with sufficient pressure should be used for fine grinding or grinding to meet the requirements.

6. Wear the teeth of a reamer

Modify the ruler of bore diameter in pre-processing, reduce the material hardness or switch to a negative rake angle reamer or a cemented carbide reamer, control the swing error within the qualified range, increase the entering angle, pay attention to timely removal of chips or use a reamer with an inclination of the blade, and pay attention to the sharpening quality of the reamer.