b'The Hemmer The Hemmer Pad BendersEliminate Tool Marks Eliminate Die Stations and Operations;Use in Progressive Dies, Automated MachinesThis patented tool can form a slightlyopen bend completely at in onevertical press stroke. Use it to form UP Flat HemAssembly hem Pressureor DOWN in high production stampingdies and automated machines. Eliminatethe cam action pre-hem operation and Important Hemmer Functions Bring this point as close aspossible to contact in this areado hems in two stations instead of three. 1. Diameter may be chosen more by leg before engaging the part.We use full hard D-2 rockers and height than material thickness.special READY High Production style 2. Hemmer dimensions are the same assaddles. This is a special bender, yet REC models, except rocker is in the Final Formattractively priced.center of the saddle.3. Testing is highly recommended on allAll hem applications should be quoted hem applications to help determineby READY. Fax prints and the worksheet proper positioning. Pressureon the back cover. We usually suggest a 4. Pressure pad needed to avoid slidingtest-bend using your material to accu- as hemmer contacts and attens. Bender must berately predict results and select the right positioned withhemmer design. We charge a modest 5. Maximum hemmer length is 12. For enough land tofee for this service, based upon the longer lengths, butt end-to-end with atten the hem.application010 gap between saddles.Bending WithoutPad Benders Not Just for Elimination of Tool Marks Tool MarksHardened Steel Pads can help in many Important Pad Functions READY Benders normally leave abender applications. By activating the 1. Hardened Pads can be designed to slight burnish or shine mark on bothbender on top of a hard pad, youmatch a parts irregular shape on part surfaces. This is a big improve-isolate the rocker from the part on the one side yet be at and parallel on ment over wipe tool scrapes andcritical holddown surface. the surface that the bender contacts. gouges.NO CONTACT = NO MARK. 2. Eliminates rocker contact and impact Elimination of tool marks is not juston part holddown surface. for prepainted metal - one of our big3. To protect a part cutout or hole from success areas. Use of pads (bottom,distortion due to its proximity to the left) and highly polished steel rockersbend line. are very successful on prepaint and4. To eliminate humping of the material other decorative surfaces.when the application dictates upsiz- Depending on acceptable tool marking the rocker diameter. The pad criteria, we have the solution to mostprovides holddown pressure close to situations. Testbending (page 19) isthe bend radius. the safe approach. For a modest fee,Independent pad 5. To match a standard rocker diameter we will form your material using ourcan be part of existing stripper to the Zee bend or offset vertical benders and send you a report withheight. Allows use of standard your sample for evaluation.rockers versus making specials.When Using Pads, READY TechnologyRecommends:1. Locate the pad and its shoulderscrews/ spools as close as possibleto the tangency point of the radius.This location and bushings or guideswill prevent the pad from tipping. DelrininsertBuilt-in pads 2. Springs to lift the pad should workcan be made as specials for most benders separately from the spring return of Solid Delrin Rockers or Delrin Insertedthe bender. Rockers are used without pads on low to3. Additional part holddown may be medium production applications.required in some applications (pilots, Delrin is a registered trademark of E.I. Dupont.die springs or nitrogen cylinders). 11'