Adjustable Diamond Reamer

1, the leading design sets
Adjustable preamble sets diamond reamer diameter should be machined hole diameter than the small size of 0.01-0.02mm, 7mm long 15 front end? Taper reamer body to guide smoothly into the hole to be machined. Generally the preamble sets the length of the aperture 0.7-1.2 times, to havesynthetic diamond holes, leading sleeve length should be greater than the slot pitch values.
Since before the process valve hole size Φ31.98, therefore leading sleeve diameter is designed to Φ31.965. There are holes to be machined ring groove, so take the preamble sets the length of 60mm, grinding wheel preamble to open four Park arc grooves to facilitate coolant outflow from the hole bottom.
Preamble sets of softer material selection QAL9-4, so that the hole to be machined hole wall easily be scratched.
2, the design of the rear guide sleeve
After the reamer guide sleeve outside diameter smaller than the machined hole size 0.01-0.02mm, the retraction has both the right guidance and will not occur when processing "killed." Reamer body length to be considered part of the excess amount of calibration and pore structure, and the outside diameter of the spiral groove opening to the external cooling fluid can be passed smoothly.
As required size of the valve hole Φ32H9, so after the guide sleeve is designed to Φ31.985, fetch length 130mm. Figure IV.
3, reamer body design
Diamond particle Polycrystalline diamond and hole machining allowance and roughness related. Large margin requirements coarse roughness demanding select fine particles. So choose the basic principles of the diamond particles are guaranteed to meet bore roughness conditions, try to use a coarse diamond particles, so that one can cut diamond reamer large margin, Diamond Reamer allowance generally does not exceed 1/4-1/5 diamond calculate size. According to the information and the test results, the use of coarse, fine, fine three valve hole reamer machining