Shenzhen precision machinery parts processing copper drilling four trick copper is one of a kind of relatively pure copper, plasticity is good, but its strength, hardness is low, due to some special occasions, need to use copper as a material for precision machinery parts processing, parts of this kind of material in small size hole, it's easy to have a bit broken, this is because the red copper when drilling cutting force is small, and the cutting temperature is low, because of the high copper itself of the plastic, will cause the chip is not easy to fracture, large deformation, which would roll together, chip removal difficult problem.
Copper material drilling precision parts
below this kind of circumstance: 1 - using ordinary twist drill drill diameter
5 mm, hole depth is greater than 5 mm holes, and as the little bit poor rigidity, horizontal blade broad, axial force and the larger capacity small crumbs slot, cause the chip removal is bad, make the chip easy to plug in the hole, the bit jamming and broken, for the copper material precision machining
small size hole drilling difficulties, we need to pay attention to what?
Bit clamping position must be correct, for small diameter bit, because of its low stiffness, and axial stress after bending deformation, make the drill slanting, lead to drill is easy to break.
In order to avoid this kind of situation, clamp head out to make a bit short as far as possible, improve the drilling cost rigidity.
Workpiece clamping position to the right, the hole surface must be flat, bit axis perpendicular to the plane of the precision machinery parts processing, prevent drilling radial force, make the drill flower bending, make the drill slanting, lead to easy broken bit;
Drill holes, and to prevent bit wandering, before drilling center drill can be used to drill a pilot hole, then use bit drilling.
Drill the holes, and copper type precision parts in to add lubrication coolant, lubricating coolant by 5%
8% emulsion and the mixture of kerosene, vegetable oil is also used for lubrication.
Must strictly according to the bit diameter and chip removal, control or control each drilling hole deep, often out of bit of chip removal, prevent chip stuck in the hole, the bit broken.
The above information is derived from the shenzhen precision machining manufacturer Xavier precision components co. , LTD.
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