“EVOline” The Beginning of a New Generation Thread Rolling now Faster
Rolled threads guarantee maximum strength and resilience in the most demanding situations.
LMT Fette has been developing rolling systems for chip-less thread forming for over 60 years now.
By utilizing numerous individual innovations and its wealth of experience with industrial applications, it has now created a completely new generation of rolling head: The EVOline sets the highest standards for efficiency, process reliability, precision and flexibility in thread rolling.
Whether it is fittings for pipe systems, connections for car bodies, jack screws for houses and bridge buildings or sucker rods for the oil and gas industry, threads are used in practically every sector.
Their job always remains the same, which is firmly holding together what belongs together.
However, there are great differences in the production and quality of threads.
Thread rolling has established itself as an efficient alternative and replacement to thread cutting for three main reasons:
extremely short production times with the highest thread stability
constant dimensional accuracy
excellent surface quality
In addition, a thread rolling head can be used in a flexible way in almost all machining centers.
As a result of its modular layout and a completely new tool design, the EVOline rolling head sets new performance standards for the chip-less production of external threads. This is our solution to the increased demands being made on thread rolling as a result of rising production volumes, new materials and integrated processing on tool machines. It is crucial here that tools offer process reliability, precision, flexibility and ease of operation.
Fine adjustment to accuracy of a hundredth of a millimeter
The exceptional features of the new rolling head include its simple but extremely accurate fine adjustment of thread diameter and the system’s ease of assembly.
Adjustment of the rolling diameter is carried out using a spindle. The system is accurate to one hundredth of a millimeter and offers exceptionally high repeat accuracy of the effective diameter. The new rolling head guarantees the repeatability of the thread diameter with the same setting within a range of +/- 0.01 millimeters. LMT Fette has applied for a patent for its new adjustment system.
Process reliability and simple operation through modular design
The modular design ensures simple assembly. In addition to the thread rollers themselves, the rolling head consists of the roll cage assembly with transmission, coupling with central alignment and fine adjustment as well as flexible coupling joint for a large number of standard shanks, locking mechanism/locking pin and shank. The locking pin can be turned through 360 degrees and therefore optimally adjusted to the mounting situation in the respective machine. The joint between coupling and shank guarantees precise concentricity with secure torque transmission. It can be modified to users’ specifications: for example, a coolant-operated locking device can be very easily integrated as an accessory.
Special chip protection
Special chip protection is another feature that increases process reliability even further. The rolling head has a stable chip protection lid that secures the machine against chips and contamination from upstream processes – even when the coupling is open. The tool design itself – for example, the nickel-plated surface of the rolling head – also contributes to this protection.
Some highlights of all models of the EVOline Rolling Heads
fast, simple and precise thread production
short production times, high quality and thread stability
simple and precise fine adjustment of thread diameter
permanent protection against chips and contamination
easy assembly and high standard of safety due to modular design
trouble-free adjustment to customer-specific applications
Whats New and Updated: 2016
New: The closing process can be realized with the new closing device (CCD) for EVOline. Adapted between rolling head and shank and connected with the coolant supply, closing of the rolling head can be transferred from process time to the non-productive time of the machine. Closing by coolant (or even compressed air) can be integrated in the machine program by a simple function.
The setting of the rolling diameter has adjustments of 0.01 millimeters which allow for precise control and consistent repeatability of the pitch diameter, giving you the assurance of a secure and reliable process.
The modular design provides longevity of use with the ability to replace the thread rolls, rollers, rolling system housing, central fine adjustment, closing clip device and shanks, making it adaptable to any station or other machines in house. All common shank sizes are available.
The interface between the clutch and shank guarantees precise concentricity between the with safe torque transmission. Customized modifications are possible, for example a coolant driven closing device adding to the speed and automation of the entire process.
Huge progress towards increased process safety and reliability is incorporated by a new chip guard in the EVOline heads. Chips and other particles from preliminary processes cannot enter the rolling head anymore, even with the opened clutch.
