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Distributor's Link Magazine Winter 2023 / Vol 46 No 1


106 THE DISTRIBUTOR’S LINK ABSOLUTE GRINDING CENTERLESS GRINDING FOR THE FASTENER INDUSTRY from page 34 In-Feed or End-Feed ¤ The parts are generally headed parts and often are shaped/contoured or tapered. ¤ In-Feed, which is often referred to as “crush grinding” is used for processing under-cuts, captivations, pointing, and the O.D. on shoulder bolts, to name a few. ¤ Cam-Out is a little known but common variation of in-feed. Instead of the regulating wheel feeding and dwelling during the grinding process, it is trued/dressed in the shape of a cam with a .010 to .030 thousand rise and a drop slot, which is the place for the work piece to drop out after grind. In this application, the load, feed, spark-out and removal are all controlled and timed off the rotation of the “cammed” regulating wheel. Because the slides are locked in this process, the accuracy of high volumes of components can be more accurately controlled vs. linear drive systems. When Looking For A Good Centerless (Precision) Grinding Partner, Ask The Following: [1] Is the company ISO9000-2015 Certified? [2] What is their minimum quantity? [3] Do they supply knock out pins or any other secondary processes for the Cold Heading Industry? [4] Are they responsive and easy to work with on quoting and process development? [5] Do they continually train new employees who wish to learn to be Centerless Grinding Technicians? Centerless grinding is a skill set that is not taught in trade schools. [6] Are they able to rebuild their own machines – including complete and partial rebuilds? In addition to improving the up time on very specialized equipment, this allows them to incorporate new technologies and loading processes. Centerless Grinding is a key secondary process for the fastener industry. It is ideal for captivations and O.D.s on shoulder bolts. Additional ground features include pointing, head height head diameter, chamfers, thread diameter pre-roll and many others. If you would like to learn more or need help with a project, please reach out to us at Absolute Grinding. We are a woman owned business and we are celebrating our 25th year in business. ABSOLUTE GRINDING & MANUFACTURING



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