Whether you need tooling for your production line, a precision fixture, a destacker or laser weld cell, equipment refurbishment or a turnkey automated system, Coldwater can deliver a solution that meets the stringent requirements of the automotive industry. Our engineers are experts in designing efficient manufacturing solutions that achieve the high accuracy and repeatability required by the OEM and Tier automotive industry while making you more efficient, productive and cost-effective.
Coldwater provides the design and build of modular cells or turnkey automated welding and joining systems that are used in vehicle body-in-white assembly by Tier suppliers for both steel and aluminum structures. Production processes in these assembly lines incorporate a variety of material handling solutions as well as various joining technologies such as welding, hemming, adhesive bonding, clinching, riveting and more.
Typical applications include assembly and sub-assembly lines for closures, such as tailgates, doors, hoods, wheelhouses, roofs and structural components such as pillars, cross and front beams, reinforcements, and more.
Using Coldwater-designed laser welding module standards, we build powertrain laser welding lines to meet each customer’s particular requirements. Our solutions include palletized transfer of components with RFID tracking through the assembly and welding process, laser ablation, robotic material handling, servo-controlled presses, laser welding and ultrasonic inspection of the weld.
When it comes to lightweighting and joining of dissimilar or mixed materials, Coldwater Machine is the industry leader for new joining technologies for aluminum, magnesium and high strength materials. We are experts in both rotary friction welding and refill friction stir spot welding as well as laser welding of powertrain components.
Coldwater provides turnkey robotic solutions for automotive body subassemblies such as hoods, tailgates, doors and truck box sides. Our solutions use the latest in robotic assembly technology and can incorporate a wide variety of joining techniques from resistance and laser welding to clinch joints, self piercing rivets and friction welded nuts and fasteners.
Our customer had a new product that required five operations – a combination of bending, sizing, crush-forming and retrimming. The initial processing approach also required additional material to accommodate the retrim prior to bending. Coldwater’s solution replaced all of these operations with a single-stroke hydraulic press cycle. In addition, this approach eliminated the need for extra material.
The result? Time savings, floor space savings and an approximately 75% reduction in system cost as compared to the original processing approach.
The system was designed around a servo indexing dial table and features two TOX press stations, Rofin fiber laser, Spectrum feeder, Rofin laser marking, Fanuc robot load/unload and AB controls.
To produce this Automated Transmission Gear Assembly, we designed and built an integrated cell with automatic feeding of the gear and bushing that:
1. Robotically loads the component
2. Presses the hub and gear together
3. Laser welds the components
4. Presses a wear bushing into the gear
5. Laser marks the final assembly
6. Robotically unloads the finished assembly
Our customer had been processing tubular Window Regulators using four manual cells requiring one to two operators at each cell. We developed an automated, programmable line that decoils, mills, cuts, loads and bends that was capable of processing 40 different high volume parts with approximately 250 different SKUs. Providing easy programmability for quick changeover also enabled the customer to bring low-volume parts to this line.
The result? Three of the manual stations were replaced with this single line. The customer gained through faster changeover, improved part consistency, equipment reliability and labor savings.
To produce this Transmission Torque Tube, we designed an automated processing solution consisting of four in-line presses and a transfer system. As compared to alternative single-press solutions, this line eliminated the need for a pit or the expensive rigging costs associated with larger presses. The system features a station to flip the part – top to bottom – without the typical constraints encountered when using multiple dies in one large transfer press.
Our customer was interested in replacing clinch nuts with friction welded nuts on an automotive aluminum panel. Through a series of design iterations, verified by weld lab testing, we developed an M6 nut size and nut driver that would automate pickup and welding during production.
After verifying the optimal nut design and process, Coldwater developed a two-machine solution that friction welds nuts on the same part on different ends, which enabled our customer to meet the OEM’s 11.6 second part-to-part cycle requirement.
To produce this Expedition Truck Frame section, we provided two custom pierce stations to pierce the control arm pivot holes — post weld.
A particular challenge of this project was providing the cutting and forming of the cam washer lances from inside the bracket where there is a very limited space for tooling and supporting the mandrel.