Profimach PRT-Series
One Sliding Head Two-Roll-Type Thread & Profile Rolling Machines
Profimach PRT-Series
THREAD ROLLING MACHINES and PROFILE ROLLING MACHINES
- Versatility – with the ability to do both infeed and thru-feed, a standard feature on most of our machines, you can form anything from a bolt or stud to a long-threaded bar.
- Simplicity – With most setups performed in less than ½ hour, our machines can be used for both production and custom thread or form rolling.
- Cost-effectiveness – The ability to tilt die spindles to the helix angle of thread lets our customers use lower-cost, annular ring dies.
- Productivity – Speed-up dies can increase work feed rate while keeping RPMs of the work piece constant. Helical slow feed dies can decrease work feed rate, thereby allowing material to flow and form at a slower pace – requiring less horsepower and pressure than needed for annular dies.
- Maintainability – easy to maintain and service due to simple design and high-quality components.
Two-Roll thread rolling Machines
Our Affordable Profimach line of thread rolling machines, convinces by an excellent price-performance-ratio, available from 5 ton up to 400 ton . There is more pressure power on request. All models are equipped with PLC control and frequency converter (FU) for infinitive variable speed.
The universal composition of our thread rolling machines allows the application of the machine for all known processes of forming in in-feed or throughfeed. Highest production rates can be realized. Manual loading and unloading is comfortably supported by the generous working space.
The automation of this model range is always possible because of the open construction of the working space and makes the handling easy. This reduces drastically the takt time and simplifies loading and discharging of the work pieces.
High precise profile guiding rails lead to higher quality in through-feed or in-feed are guaranteed process. Thanks to short changeover times, all productions are guaranteed. All adjustments are easily done from the front of the machine.
Profimach PTR Rolling machines’ series
THREAD ROLLING MACHINES and PROFILE ROLLING MACHINES
Profimach PTR Rolling machines’ series is the long-lived rolling machines and the reliable one. Characterized by One Single Moving Slide and Two Rotating Spindles, the machines of the PTR series are suitable for rolling standard threads and profiles as well as cold forming on cylindrical components according to the most common thread standards (ISO, ACME, TPN, WORM SCREWS, etc.).
The PTR machines are engineered and designed to perfectly adapt the economical manufacturing solutions as well as the high productivity manufacturing lines.
The main lead of the our PTR line machines is the almost unlimited connection with automations, their short cycle times and the ability to make a quick and fully automatic setup - few seconds for pitch-finding during dies changeover.
The PTR model has been developed to allow fast and precise plunge and throughfeed rolling operations.
The spindles management for this series: all the spindles are managed in group through a single transmission moved by a single asynchronous motor.
PTR Series
Thread / Profile Rolling Machines
| Specification | PTR 30 | PTR 42 | PTR 50 | PTR 60 |
|---|---|---|---|---|
| MAX. ROLLING PRESSURE | 80 kN | 150 kN | 180 kN | 200 kN |
| ROLLING MATERIAL DIAMETER | 5 – 30 mm | 6 – 42 mm | 6 – 50 mm | 60 mm |
| THREAD MAX. PITCH | 2 mm | 3 mm | 4 mm | 6 mm |
| OUTER ROLLER DIAMETER | 120 – 170 mm | 120 – 170 mm | 120 – 170 mm | 210 mm |
| INNER ROLLER DIAMETER | 54 mm | 54 mm | 54 mm | 75 mm |
| MAX THICKNESS OF ROLLER | 100 mm | 100 mm | 100 mm | 120 mm |
| SPINDLE CENTER DISTANCE | 120 – 240 mm | 120 – 240 mm | 120 – 240 mm | 150 – 270 mm |
| AXIS TILTING ANGLE | ±3 ° | ±3 ° | ±3 ° | ±15 ° |
| SPINDLE SPEED | 34,43,57,72 rpm | 36,47,60,78 rpm | 36,47,60,78 rpm | 16,26,38,55,90 rpm |
| MAIN MOTOR POWER | 4.0 kW | 4.0 kW | 5.5 kW | 11 kW |
| HYDRAULIC MOTOR | 2.2 kW | 2.2 kW | 2.2 kW | 4 kW |
| COOLING MOTOR | 90 W | 90 W | 90 W | 125 W |
| OVERALL DIMENSION(L*W*H) | 1480x1500x1050 mm | 1500x1580x1140 mm | 1600x1550x1445 mm | 1700x1850x1545 mm |
| MACHINE WEIGHT | 1100 kg | 1400 kg | 1700 kg | 2300 kg |
THREAD ROLLING PROCESS
Superior quality of thread
Rolling process is recommended when threads are required with superior tensile, shear, and fatigue strength. Other processes like turning, milling and grinding remove material to produce the thread form, but thread rolling displaces the material with hardened steel dies. Rolling dies typically have a hardness between a range of RC 58-63 and there is a specific set of dies for each thread size and each thread form.
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Static tensile tests on parts formed through thread rolling show overall increases in strength of about 30 percent.
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Fatigue strength is improved by 50-75 percent.
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Tests on bolts first heat-treated to a hardness of 35-40 Rockwell C and subsequently rolled show even greater fatigue strength.
For many applications, thread rolling, is the best choice for creating higher quality external threads in a single pass due to it's chipless operation.
When parts are produced in larger quantities, single point threading’s versatility is less beneficial. This is because, in order to maximize effective tool life, single point inserts are processed with a limited depth of cut with multiple passes needed to cut to the thread’s full depth. The time needed to take these multiple passes can create a bottleneck. Additional passes may also be taken to deburr the thread, requiring more machine tool time or a secondary operation outside the machine. Although CNC is bringing down the total threading cycle times by making non cutting functions more efficient, these time savings are negated by the added time it takes to single point the thread. Thread rolling on the other hand, produces threads in one pass, reducing expensive CNC machining time.
In addition to doing more work on one machine in less time, thread rolling has many technical advantages over single point threading. Instead of cutting or shearing the material as is the case of single point threading, thread rolling cold forms the profile to be produced. In this process, the component material is stressed beyond its yield point, being deformed plastically, and thus permanently. A hardened die made from tool steel or HSS displaces the material along the contours of the thread profile, plastically deforming the material into the final form. The workpiece material is stressed beyond its yield point, which causes it to flow and conform to the mirror image of the die’s profile.
High benefits of Thread rolling process are:
✓ Lower costs
✓ Increased production
✓ Faster lead times
✓ Superior quality and accuracy:
○ Stronger threads
○ Improved finish
○ More accurate profile
Our spline rolling machine can easily replace all following models: FIMAT Hydraulic Spline Rollers – RH800, RH1150 & RH1350, Electromechanical NC Spline Rollers – RM800, RM1150 & RM1350, Roto-FLo Ex-Cell-O Spline Rollers, EX-CELL-O ROTO-FLO 3251S, ANDERSON COOK MARAND 330, ANDERSON COOK MARAND 350S, ESCOFIER INCREMEX 300, EX-CELL-O 3251S, EX-CELL-O ROTO-FLO 3225, EX-CELL-O ROTO-FLO 3251S, EX-CELL-O ROTO-FLO XK-225, GROB ZRM 12 NC-DR-A890, MICHIGAN ROTOFLOW 3237, NACHI PFM 915 FSAL, ROTO-FLO 3251, Cold Rolling Machine - EX-CELL-O - ROTOFLO XK337, Spline roller - Cold rolling, EX CELL O XK 275 CNC, EX CELL O XK251, Ex cell O roto flo XK 225 rolling machine, EX CELL O - XK851 CNC, EX CELL O - XK851 CNC, EX CELL O - XK851 CNC, Machine à rouler les cannelures - FIMAT RL 1350, Rouleuse de cannelures - ESCOFIER INC 300, EX-CELL-O COLD SPLINE ROLLING MACHINE XK 351 OR ROTO FLO 3251, profiroll, profiroll pr400hp, profiroll pr, profiroll pr15hp, ekin, mag series, mag XK 225, mag XK 237, mag XK 251, mag XK 275, mag XK 637, mag XK 651, mag XK 675, mag XK 837, mag XK 851,mag XK 875, ROTO-FLO machines, ROTO-FLO XK225, ROTO-FLO XK237, ROTO-FLO XK251, ROTO-FLO XK275, OSG EX-CELL-O, osg-mag.