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Innovative Cold Former Minimizes Changeover Time

The seven-station COLDmatic CM 725 cold former from Hatebur produces up to 180 parts per minute with fast changeover times of only ten to 15 minutes on high precision parts from 8 mm to 125 mm long with a wire diameter up to 22 mm.

Posted: February 22, 2018

For automotive suppliers, the seven-station COLDmatic CM 725 cold former from Hatebur produces up to 180 parts per minute with fast changeover times of only ten to 15 minutes on high precision parts from 8 mm to 125 mm long with a wire diameter up to 22 mm.

For producing screw blanks and solid parts, the easy-to-operate Carlo Salvi CS 001 from Hatebur forms up to 660 parts per minute from very thin wires (from 0.6 mm to 3 mm) with minimized set-up time that makes even small quantities down to five parts profitable.

The seven-station COLDmatic CM 725 cold former from Hatebur AG (Reinach, Switzerland) uses servo motors to significantly minimize changeover times and boost the productivity of users who are forming high precision parts from 8 mm to 125 mm long with a wire diameter up to 22 mm, which is ideal for suppliers of the automotive industry. With a production capacity of up to 180 parts per minute, the CM 725 is much faster than previous machine generations, and changeover times have been shortened considerably: at the wire infeed, a linear servo motor ensures that the grippers push the wire forward with highest precision. “The volume variation of the cut-off parts is below 0.35 percent. Together with the high quality of the sheared surface, which is typical for this machine, this results in a cut-off quality that allows forming from the first station,” explained Reinhard Buehrer, the head of marketing and sales at Hatebur.

The centerpiece of the COLDmatic is the new transfer system where the grippers used for part transfer are mounted. All of the grippers are individually driven by servo motors and can be individually opened, closed, and programmed. “Programmability brings enormous advantages when it comes to changeover times. Instead of changing all the parameters manually, all previously saved settings can be applied in just a few seconds,” noted Buehrer. Because of the servo motors, the CM 725 uses far less mechanical parts than previous machines, reducing overall costs by almost 20 percent. The innovative fast changing system allows operators to lift out all seven punches and dies at once and exchange them with prepared units in only ten to 15 minutes.

Hatebur also offers the Carlo Salvi CS 001 for processing very thin wires from 0.6 mm to 3 mm. Easy to change over and operate with one die and two punches, it can form an impressive 660 parts per minute with minimized set-up time and is ideal for producing screw blanks and solid parts. Even small quantities, as low as five parts, are profitable through the minimized time for set-up.

Hatebur Umformmaschinen AG, General Guisan-Strasse 21, 4153 Reinach, Switzerland, +41 61-716-2111, www.hatebur.com.