Surface Grinder's Sealed Spindle Promotes Service Longevity
Kaast Machine Tools’ saddle-style F-Grind AH series high precision surface grinder is said to accommodate workpieces ranging from 5.8" × 17.5" all the way to 15.5" × 31", depending on the model.
Kaast Machine Tools’ saddle-style F-Grind AH series high precision surface grinder is said to accommodate workpieces ranging from 5.8" × 17.5" to 15.5" × 31", depending on the model. It features hardened, ground and PTFE-coated table guideways. It also features a double-V guide for transverse movements and combined flat and V guides for longitudinal movements.
Spindle motors are available with up to 7.5 hp and speeds ranging to 2,900 rpm. The class-P4 high-precision angular contact bearing is said to provide runout accuracy better than 2 microns. The cartridge-type spindle is completely sealed and lubricated, providing high-accuracy grinding and a long service life, says the company. The vertical feed moves in 0.01-mm (0.0004") increments. The transverse feed moves in 0.02-mm (0.0008") increments. Automatic downfeed from 0.001 to 0.999 mm (0.00004" to 0.04") is said to ensure a smooth finish.
Users can add an optional AD5 automatic downfeed system to enable fully automated three-axis grinding. The optional AD5 NC decreases vertical feed increments to 0.005 mm (0.0002").
The double-disc grinding process is consolidating its position in automotive applications but is moving into other industries. Double-disc grinders are now easier to operate, and they have added capabilities for control flexibility, precision process control, faster changeovers, and grinding of nontraditional materials.
Achieving consistent and quality results from the centerless grinding process requires an understanding of the basic fundamentals. Most application problems associated with centerless grinding derive from a misunderstanding of the basics. This article explains why the centerless process works and how to use it most effectively in your shop.
Understanding grinding wheel fundamentals will help you find the right wheel for the job.