How to dress the circular profile of diamond grinding wheels?

Due to the operation difficulty and equipment complexity of precision form truing of arc-shaped diamond grinding wheel, a new NC mutual-wear form truing was proposed. In this form truing, wheel is driven along arc interpolation path to grind GC stone and then arc-shaped wheel profile is gradually formed. It is used for curve grinding of super-hard materials. On the base of establishing control mode of formation radius of arc-shaped diamond grinding wheel, effect of wheel position error relative to GC stone was analyzed on form error of trued arc-shaped profile of grinding wheel. In addition, evaluation indexes of truing accuracy and truing ratio were intruded, and then truing accuracy and truing ratio were investigated by L9(34 ) orthogonal test with reference to wheel rotate speed, moving speed and depth of cut.

The circular profiles of grinding wheels are usually dressed with diamond dressing pens, but are limited to white corundum and silicon carbide grinding wheels with low hardness. Therefore, foreign scholars have developed the reciprocating circular rotating cuprite dressing method and the in-line electrolytic in-process dressing (ELID) method. These two methods can perform precision dressing of diamond wheels with circular profiles for precision work on curved surfaces of superhard materials. However, the former requires additional control devices for reciprocating circular rotation and the latter requires complex CNC devices and contaminated electrolytes to control the electrochemical interaction between the grinding wheel and the electrodes. These can present problems of high technicality and maintenance costs, and can only dress a fixed radius of the grinding wheel's circular profile, making machining less flexible and therefore limiting the range of applications.

                 
                         

Analytical results of NC form truing show that the profile radius of arc-shaped grinding wheel may be regulated by changing arc interpolation radii in CNC mutual-wear form truing, which can suit for curve form grinding of different curvature, and form error is not larger than 5 µm/10 mm when position error between grinding wheel and GC stone is less than 0.1 mm. Experimental results of form truing show that wheel speed and wheel moving speed mainly influence truing accuracy and truing ratio respectively. Otherwise, truing accuracy and truing ratio may be simultaneously improved with increasing wheel speed, but truing ratio is enhanced and truing accuracy may be destroyed with increasing wheel moving speed. When optimal truing conditions are selected, form error of 25.1 µm / 8 mm and truing ratio of 7.31×10–3 mm3 /mm3 may be obtained respectively, enhancing truing accuracy by 2~3 times and truing ratio by about 7 times respectively.

What diamond grinding wheels do we have?
*Vitrified Diamond & CBN Wheel
Grinding PCD Inserts, PCBN Inserts, Mono Crystal Diamond Tools, PCD Reamer Grinding, Carbide and Cemmet Grinding, Precision Ceramic Grinding, Camshaft & Crankshaft Grinding, Natural Diamond Polishing, Double Disc, Internal Grinding
*Resin Diamond & CBN wheel
Resin diamond & cbn wheels used for machining tungsten carbide cutting tools, ceramic ,magnetic materials, silicon ,glass ,quartz and high speed steel,etc
*Electroplated Diamond & CBN Wheel
Electroplated diamond & cbn wheels used for profile grinding tungsten carbide, stainless steel, HS steel, zirconia / aluminum oxide, powdered metals, sintered silicon carbide
*Metal Diamond & CBN Wheel
Metal diamond & cbn wheels used for grinding tungsten carbide, ceramics, composites, zerconia aluminum oxide, ferrites, powdered metals, titanium graphite composite

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