First gear dry grinding machine in the world

Under the slogan “Beyond precision”, Samputensili is looking forward to meet customers and partners at EMO Hannover (September 18-23, 2017) in Hall 26, Stand A56 to show the results of the constant strive for precision and excel-lence, in an effort to make customers’ manufacturing more reliable, efficient and environmental friendly.

 

The new revolutionary machine features two spindles: one for skive hobbing and one for generating grinding. The grindind process is split into two main passes: roughing and finishing. For the roughing process, skive hobbing is implied, whereas worm grinding is used for the finishing process.

 

The SG 160 SKYGRIND removes about the 90 percent of the stock allowance with the first pass using a hobbing tool, which has the advantage of not heating the workpiece excessively. Subsequently, with the second finishing pass, a grinding wheel removes the remaining stock without causing problems of overheating the workpiece, therefore resulting in a completely dry process. Moreover, its innovative structure with two spindles actuated by linear motors and the use of more channels simultaneously ensure a time of chip-to-chip of less than two seconds.

 

The SG 160 SKYGRIND ensures cycle times for the finishing of gears that are perfectly in line with the automotive industry, at a lower cost compared to traditional manufacturing solutions. This amazingly productive machine is even faster than traditional dual table grinding machines, is characterised by a very small footprint and a lower cost of investment for auxiliary equipment. More importantly, by totally eliminating the need for cutting oils, the machine is extremely environmental friendly.

 

Samputensili G 160 – a European premiere

Also on display the Samputensili G 160 – a European premiere that the company is very proud to launch in Germany. This machine has been especially designed and manufactured to fit the requests of the automotive market, which is focusing on high performances and excellent quality.

The Samputensili G 160 features a new concept for the high-productive grinding of gears up to 160 mm diameter with double work spindles, where separate X1 and X2 axes, driven by linear motors, replace the typical rotary turret, enabling a faster workpiece change and a record-breaking chip-to-chip time of less than 2 seconds including meshing, synchronization and simultaneous repositioning of the tool.

 

This unique, patented machine concept ensures the best production times currently on the market. But the machine delivers even more.

 

No additional axis is needed to perform the dressing cycle. The dresser is mounted on the X1 axis slide next to the workpiece spindle. So, the precise and highly dynamic motion of the linear motor may also be used to fine-tune the geometry of the grinding wheel and the corresponding gear. It enables topological modifications of the gear flank at an unprecedented quality. Having the dresser located on the same slide as the workpiece-spindle, it finally makes it totally insensitive to thermal or other types of deviations.