China supplier high demand Factory price what is 5 axis machining
In the process of reaming, there are often problems such as out-of-tolerance aperture and high surface roughness of the inner hole. China supplier high demand Factory price what is 5 axis machining
the cause of the problem
The larger the aperture, the larger the error
The design value of the outer diameter of the reamer is too large or there are burrs on the edge of the reamer; the cutting speed is too high; the feed rate is improper or the machining allowance is too large; the leading angle of the reamer is too large; the reamer is bent; Chip edge; the edge swing of the reamer is out of tolerance during sharpening; the selection of cutting fluid is inappropriate; the oil stain on the surface of the taper shank is not wiped clean or the taper surface is damaged when the reamer is installed; the flat tail of the taper shank is offset after the machine tool spindle Taper shank and cone interference; the main shaft is bent or the main shaft bearing is too loose or damaged; the reamer is inflexible in floating; China supplier high demand Factory price what is 5 axis machining
Aperture reduction
The design value of the outer diameter of the reamer is too small; the cutting speed is too low; the feed rate is too large; the main declination angle of the reamer is too small; Shrinkage; when reaming steel parts, if the allowance is too large or the reamer is not sharp, it is easy to produce elastic recovery and reduce the aperture; if the inner hole is not round, the aperture is unqualified.
The reamed inner hole is not round
The reamer is too long, the rigidity is insufficient, and vibration occurs during reaming; the main declination angle of the reamer is too small; the reamer edge is narrow; the reaming allowance is biased; the inner hole surface has gaps and cross holes; The bearing is loose, there is no guide sleeve, or the clearance between the reamer and the guide sleeve is too large; because the thin-walled workpiece is clamped too tightly, the workpiece is deformed after removal.
The inner surface of the hole has obvious facets
The reaming allowance is too large; the rear angle of the cutting part of the reamer is too large; the reamer edge is too wide; there are pores and sand holes on the surface of the workpiece; the spindle swing is too large. China supplier high demand Factory price what is 5 axis machining
supplier high demand Factory price what is 5 axis machining
High surface roughness valu
High surface roughness value of inner hole
The cutting speed is too high; the selection of cutting fluid is inappropriate; the main declination angle of the reamer is too large, and the reamer edge is not on the same circle; the reaming allowance is too large; the reaming allowance is uneven or too small, and the local surface is not reamed; The swing of the cutting part of the reamer is out of tolerance, the cutting edge is not sharp, and the surface is rough; the reamer blade is too wide; the chip removal is not smooth during reaming; the reamer is excessively worn; Edge has built-up edge; not suitable for zero or negative rake reamers due to material.
Low reamer service life
The material of the reamer is not suitable; the reamer is burned during sharpening; the selection of cutting fluid is not suitable, and the cutting fluid cannot flow smoothly in the cutting place; the surface roughness value of the reamer after sharpening is too high. China supplier high demand Factory price what is 5 axis machining
The position accuracy of the reamed hole is out of tolerance
The guide sleeve is worn; the bottom end of the guide sleeve is too far from the workpiece; the length of the guide sleeve is short and the accuracy is poor; the spindle bearing is loose.
Reamer tooth chipping
The reaming allowance is too large; the hardness of the workpiece material is too high; the swing of the cutting edge is too large, and the cutting load is uneven; the main angle of the reamer is too small, which increases the cutting width; when reaming deep holes or blind holes, there are too many chips , and it is not removed in time; the teeth have been cracked when sharpening.
Broken reamer handle
The reaming allowance is too large; when reaming taper holes, the allocation of rough and fine reaming allowances and the selection of cutting amount are not appropriate; the chip space of the reamer teeth is small, and the chips are blocked. China supplier high demand Factory price what is 5 axis machining
The center line of the hole after reaming is not straight
The drilling deflection before reaming, especially when the hole diameter is small, the original curvature cannot be corrected due to the poor rigidity of the reamer; the main declination angle of the reamer is too large; poor guidance makes the reamer easy to deviate during reaming direction; the reverse taper of the cutting part is too large; the reamer is displaced at the gap in the middle of the interrupted hole; when reaming by hand, the force is too large in one direction, forcing the reamer to deflect to one end and destroying the verticality of the reamed hole.
solution
The larger the aperture, the larger the error
Appropriately reduce the outer diameter of the reamer according to the specific situation; reduce the cutting speed; appropriately adjust the feed rate or reduce the machining allowance; appropriately reduce the entering angle; straighten or scrap the bent unusable reamer; Qualified; control the swing difference within the allowable range; choose a cutting fluid with better cooling performance; before installing the reamer, the reamer taper shank and the internal oil stains of the machine tool spindle taper hole must be wiped clean, and the taper surface is polished with oil stone; Grind the flat tail of the reamer; adjust or replace the spindle bearing; re-adjust the floating chuck and adjust the coaxiality; pay attention to correct operation. China supplier high demand Factory price what is 5 axis machining
Aperture reduction
Replace the outer diameter of the reamer; appropriately increase the cutting speed; appropriately reduce the feed rate; appropriately increase the main declination angle; select an oily cutting fluid with good lubricating performance; When selecting the size of the knife, the above factors should be considered, or the value should be selected according to the actual situation; for experimental cutting, take the appropriate allowance and sharpen the reamer.
The reamed inner hole is not round
The reamer with insufficient rigidity can use the reamer with unequal pitch, and the installation of the reamer should adopt rigid connection to increase the leading angle; select the qualified reamer to control the hole position tolerance in the pre-processing process; adopt the unequal pitch For the reamer, use a longer and more precise guide sleeve; select qualified blanks; when using an equal-pitch reamer to ream more precise holes, the clearance of the machine tool spindle should be adjusted, and the matching clearance of the guide sleeve should be higher; the clamping method to reduce the clamping force. China supplier high demand Factory price what is 5 axis machining
The inner surface of the hole has obvious facets
Reduce the reaming allowance; reduce the clearance angle of the cutting part; sharpen the width of the margin; select the qualified blank; adjust the machine tool spindle.
High surface roughness value of inner hole
Reduce the cutting speed; select the cutting fluid according to the processing material; appropriately reduce the main declination angle and sharpen the reamer edge correctly; appropriately reduce the reaming allowance; improve the position accuracy and quality of the bottom hole before reaming or increase the reaming allowance; Select a qualified reamer; sharpen the width of the blade; reduce the number of reamer teeth according to the specific situation, increase the space of the chip groove or use a reamer with an inclination angle to make the chip removal smooth; replace the reamer regularly, and grind it when sharpening. During the sharpening, use and transportation of the reamer, protective measures should be taken to avoid bumps; for the bumped reamer, use extra-fine whetstone to repair the bumped reamer, or replace the reamer ; Trim with whetstone to pass, and use a reamer with a rake angle of 5° to 10°. China supplier high demand Factory price what is 5 axis machining
Low reamer service life
Select the reamer material according to the processing material, and can use a carbide reamer or a coated reamer; strictly control the amount of sharpening and cutting to avoid burns; often choose the correct cutting fluid according to the processing material; often remove the chips in the chip groove, and use enough Pressure cutting fluid, after fine grinding or grinding to meet the requirements.
The position accuracy of the reamed hole is out of tolerance
Regularly replace the guide sleeve; lengthen the guide sleeve to improve the matching accuracy of the guide sleeve and the reamer clearance; timely repair the machine tool and adjust the spindle bearing clearance.
Reamer tooth chipping
Modify the pre-machined aperture size; reduce the hardness of the material or use a negative rake angle reamer or a carbide reamer; control the swing within the qualified range; increase the entering angle; pay attention to timely removal of chips or use a reamer with an inclination angle ; Pay attention to the sharpening quality. China supplier high demand Factory price what is 5 axis machining
Broken reamer handle
Modify the pre-machined aperture size; modify the allowance distribution, and select the cutting amount reasonably; reduce the number of reamer teeth, increase the chip space or grind the tooth gap by one tooth.
The center line of the hole after reaming is not straight
Increase the reaming or boring process to correct the hole; reduce the main declination angle; adjust the appropriate reamer; replace the reamer with the guide part or lengthen the cutting part; pay attention to correct operation. China supplier high demand Factory price what is 5 axis machining
