Grinding Machine Produces Small Tools, Parts

United Grinding specially designed the Walter Helitronic Micro tool grinder to produce small, precise tools and parts. The machine produces rotationally symmetrical tools down to 0.134" in diameter and re-sharpens tools as small as 0.118" in diameter. High process stability and kinematics, with five interpolation axes and two positioning axes, ensure good results in production grinding or tool regrinding. To dampen vibration and optimize thermostability the machine features robust gantry construction and a rigid mineral-cast machine bed. 

The machine accommodates part diameters as wide as 0.5", and tools as long as 4.72" and as heavy as 26.46 lbs., making it ideal for the medical, precision engineering, automotive and avionic industries, according to the company. Its fully automated systems, including an integrated six-axis FANUC robot loader capable of handling as many as 1,500 workpieces, complete machining in a single clamping, saving time and effort and increasing efficiency. 

The machine’s motor-driven grinding spindle holds as many as three grinding wheels and reaches speeds as fast as 10,500 rpm. Linear drives power the X, Y and Z axes while high-torque motors rotate the A and C axes. A ball-type linear drive powers the X axis, which automatically moves tools to the center of rotation, shortening traverses and enhancing grinding precision. The rotating A axis reaches speeds of 1,000 rpm and helps the machine to grind cylindrical shapes precisely.