A tool grinder sharpens cutting tools through a grinding operation. When a drill bit grinder is used to resharpen twist drills, it employs a three-step operational process: Step 1 involves positioning the drill bit and setting the relief angle; Step 2 involves setting the drill point angle and feeding the chuck into the grinding fixture for rotation; and Step 3 involves setting the grinding depth and web thickness to execute the resharpening.
CNC insert grinders-such as the MR-M4 model-utilize a high-magnification camera projection system for in-line inspection. This enables non-contact measurement of the tool's length, angles, and arc radii, achieving a measurement accuracy of up to 0.001 mm.
A circular knife grinder achieves precise grinding by utilizing lateral, longitudinal, and vertical drive mechanisms to adjust the relative position between the circular knife mounting base and the grinding head assembly. Specifically, a lateral drive motor actuates the lateral base plate via a lateral transmission assembly; a longitudinal drive handwheel moves the longitudinal base plate via a longitudinal lead screw; and a vertical drive mechanism moves the grinding head assembly vertically.
The indexing head on a universal tool grinder can be operated in 24 distinct positions, allowing for the grinding of tools with virtually any angle or shape, thereby enabling multi-purpose functionality within a single machine.