COVER STORY

TECHNOLOGY IS
ON FIRE

TECHNOLOGY IS ON FIRE

The photo shows the Tesla Model 3 in which our lightweight parts are installed.
(*Courtesy of Tesla, Inc.)

The photo shows the Tesla Model 3 in which our lightweight parts are installed. (*Courtesy of Tesla, Inc.)

Since our company was founded in 1935 by Rudolf Kellermann, KAMAX has always excelled in one thing in particular: the art of engineering. Over the past decades, we have developed hundreds of products, filed numerous patents and set milestones in the field of cold forming and the manufacture of fasteners for the automotive industry. Below we take a look at the current work of our Technology departments in the USA, China and Germany.

Lightweight fastener for Tesla

KAMAX Inc. in the US has recently been awarded new larger diameter lightweight head parts specific to the Model Y and refreshed version of the Model S. We have been manufacturing lightweight parts for a few years. These have primarily been M6 and M8 diameter. With the help from the Central Technology Department, these have been developed to run very efficiently in the cold header. The challenge has been the Tesla parts are M12 and M14. Tool life has not been optimal. Adjustments to current tool design are underway that should lead to even better results. All new designs and concepts introduce new challenges to overcome and the team is confident we will succeed.

US team responsible for Tesla lightweight design (f.l.t.r.): D. Burghdorf, D. Vogt, B. Price, M. Freeman, R. Darling

CONTACT

David Winn
Vice President Technology USA, OP-LAP
PHONE0: +1 810-272-2019

Workshop at Innovation Hub

CONTACT

Horst Dieterle
Director Product & Process Development and Innovation Hub, HO-HOM
PHONE: +49 6633 79-426

Horst Dieterle
Director Product & Process Development
and Innovation Hub, HO-HOM
PHONE: +49 6633 79-426

Non-Bolt Street Chisels from Wujin

The Chinese team started in 2014 with only one employee and the job was mainly collecting the issues which occurred in production and send them to the US or Tools & Equipment (T&E) in Germany. We needed their support to change the tool design and get the problems solved.

“We are grateful that T&E and US colleagues offered us the help at the beginning. Occasionally, we received different ideas from different teams, so we really feel the importance of tool design standardization.”, says Junhua Ni, Vice Technology Manager at KAMAX in China. Operation Wujin started tool design localization in 2018 and also made tool design guide lines internally as we didn‘t have group standards. The focus was to optimize the forming process and change trimming to forming. With these efforts our cold heading tool costs went down from 46 RMB/Kpcs to 29.7 RMB/Kpcs* by the end of 2020 and cold heading scrap ratio went down to 3.02%.

New KX Non-Bolt Product: Street Chisel

Tool Cost (RMB/Kpcs)*

Since 2019, the team of Junhua Ni has added making TAPTITE parts, cam-bolts, spindles, double ended bolts, T bolts, KXtap bolts, one-piece cam bolts and chisels. The newest project is working on a M30 plug. The chisel is the first part developed in Wujin and it’s the first time they use open dies. Gaining experience with this is a major topic for the Chinese TEC team. Very helpful has been using the software SIMUFACT, which can simulate the forming process and offer KAMAX China the reference for the tool design especially for non-bolt products.

Further non-bolt products will bring in more challenges as well as opportunities not only for the Technology department but also for production and quality. “Start is always not that easy, but I am sure we will be able to improve the current production and extend the market where we are still blank with all the efforts from us!”, says Junhua Ni.

*RMB stands for the Chinese currency Renminbi/Yuan (1 Yuan = 0.15 Dollar = 0.13 Euro).

scrap rate (cold heading)

CONTACT

Junhua Ni (Carson)
Vice Technology Manager, OP-WUJ
PHONE: +86 519 8011 5606

Junhua Ni (Carson)
Vice Technology Manager, OP-WUJ
PHONE: +86 519 8011 5606


KXpress · 2021 | 01