Cutting method to be applied to producing helical springs by col

Metal treatment – Process of modifying or maintaining internal physical... – Chemical-heat removing or burning of metal

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

148156, C21D 952

Patent

active

047055804

ABSTRACT:
A cutting method to be applied to producing helical springs by cold-forming a thick high-strength wire having a tensile strength in the range of 1765 to 2157 N/mm.sup.2 and a diameter in the range of 8 to 16 mm on a coiling machine, and then the wire is cut at the end coil of the coiled portion to provide a helical spring. A predetermined range about a position on the wire at a distance coresponding to the length of wire in the helical spring from the free end of the wire fed to the coiling machine is heated to a temperature within a predetermined temperature range. Therefore, the end coil of the helical spring is formed by the heated portion of the wire, and hence the helical spring is cut off the wire at a position in the heated portion. Accordingly, the helical spring can be cut with the cutting mandrel and the cutting blade or the coiling machine by a small shearing force and, since the cut end is only a portion of the end coil of the helical spring, the mechanical properties of the helical spring are not affected by cutting in the least.

REFERENCES:
patent: 4336081 (1982-06-01), Hijikata et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Cutting method to be applied to producing helical springs by col does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Cutting method to be applied to producing helical springs by col, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cutting method to be applied to producing helical springs by col will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1066195

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.