Thread cutting is an alternative to thread rolling that involves producing screw threads using a single-point tool to cut a blank, which is also called a workpiece, as it is rotating on a lathe. However, rolled threads offer increased strength, faster production, less wasted material and a better surface finish than cut threads. Read More…
Leading Manufacturers
H & R Screw Machine Products, Inc.
Reed City, MI | 231-832-2356H & R Screw Machine Products-ISO 9001-certified manufacturer of high-volume screw machine products for many industries. We also produce CNC turned parts and provide machining of customer supplied castings, forgings and stampings. Our multiple-spindle screw machines have capacities up to 2 1/4" diameter. With 100’s of years of combined employee industry experience, choose H & R at www.hrscrew.com!
Thuro Metal Products, Inc.
Brentwood, NY | 800-238-3929It is Thuro’s mission to be the leading choice for screw machine parts, and to offer our products at the highest quality and the lowest cost. Our team members dedicate themselves to ensuring that our customers receive the perfect part on time, every time. We call this Thuro TruPerfection&trade. Visit our website today to learn more about what we may be able to do for you!
Pacific West America, Inc.
Calabasas, CA | 866-317-0208Pacific West America, Inc. offers a wide variety of products and services including precision turning. We use Swiss CNC Turning for our more intricate parts. We use a variety of materials such as, aluminum, steel, brass, among others. Here at PacificWest we believe in high quality products! We believe producing what our customers need and want for their project, so please stop at our site today and send us your plans.
Swissturn/USA
Oxford, MA | 508-987-6211Swissturn/USA specializes in Swiss screw machined products for various industries, including medical, aerospace, commercial, military and computer. Our team has over 150 years of combined experience in the Swiss screw machining field. We continually develop staff to meet 21st-century challenges, and are ready to use our experience to satisfy your needs.
Ashley Ward
Mason, OH | 513-398-1414We carry many products, but all are crafted using the highest quality and precision turning techniques. We believe in offering just what the customer needs- whether it is fast delivery, detailed designs, customized parts, or simply old-fashioned customer service! We know what it takes to keep our customers happy, which is why we have many of our original customers. Find out more by contacting us today!
Chardon Metal Products Co.
Chardon, OH | 440-285-2147Chardon Metal Products leads the industry in CNC precision machining, tube bending, fabrication, screw machine products, and assembly services. We're proud to offer a diversified portfolio of manufacturing processes to meet customer's needs. Our diversity and problem solving expertise have allowed us to grow and strengthen our position in the marketplace over the past seven decades. Contact us today and tell us what we can do for you.
Thread Rolling - H & R Screw Machine Products, Inc.In addition the difference between rolled threads and cut threads is visually evident since rolled threads must have larger diameters than the blank rods from which they were made, giving the end of rolled-thread screws a much difference appearance than that of cut-thread screws. Thread tapping, also referred to as CNC tapping, is another method of producing threads.
Tapping is specifically used to create inner diameter (ID) threads through the use of a threaded tool that can either cut or form threads in a pre-drilled hole. Industries that benefit from thread rolling and other thread forming processes include electronics, commercial, construction, medical, military, appliance, woodworking and marine.
Thread Rolling - H & R Screw Machine Products, Inc.During the thread rolling process, a hard die, which is a device used for cutting out, stamping or forming material, is pressed onto a rotating blank that has been attached to the thread rolling machine. The thread rolling machine gradually increases the force with which the die is applied to the workpiece; the force enables the thread profile to roll from the hard die onto the attached blank.
Once the thread profile rolls onto the blank, it caused the metal material to be displaced in order to form the roots of the thread, with the displaced metal flowing outward. The shape or profile of the screw threads that are rolled into the blank is called a thread form. There is an alternative to the traditional thread rolling machine, which is called a planetary thread rolling machine or rotary thread rolling machine.
Planetary thread rolling machines hold the screw blank stationary while several thread rolling machines roll around the blank in order to produce planetary roller screws, which are screws that are used in precise applications requiring linear motion. These machines offer high volume production, typically using sheet metal to form the screws.
There are two main types of dies used in thread rolling machines: flat dies and cylindrical dies. Flat dies are rectangular, simple contour dies that are typically used for machined metal screws, thread tapping and woodscrews. Cylindrical dies can have two or three in-feeds, meaning two or three areas of insertion. Cylindrical two-feed dies are often used for large or balanced screws, while cylindrical three-feed dies are used in applications such as tube fittings or spark plugs.