MELCHIORRE

The company, through its more than 60 years history, is worldwide known as a reliable manufacturer of high precision (lower than 1 micron) machine tools. Potential applications cover almost every industrial sectors, such as automotive, hydraulic, electronic, optic, ceramics, etc. The flexibility and competence of Melchiorre’s technical department allows to find customized solutions for every request (eg special automatic loading systems, concave-convex grinding or perpendicularity requirements).

Melchiorre’s core business is played by the fine grinding market, single and double sided. Moreover, the company exploits its experience to provide also lapping, vertical honing and other special machines with great results.

Thanks to the huge variety of application fields experienced in the past and to the continous researchs for a higher products quality, Melchiorre is known worldwide as a reliable supplier within the high precision mechanical field. Machines’ sizes go from 400 to 2000 mm, allowing customers to flat grind whatever part within their production. Melchiorre has belonged to UCIMU (Italian Association of Machine Tools builders) since its birth: such award guarantees quality, reliability and continous innovation of the supplied products.

ELC MACHINE’S

The machines series “ELC” are designed for the double side fine grinding technology. ELC is the acronym of “Electronic-Logical Control”: the pressure, in fact, is applied electro-mechanically, through the movements of a ball screw controlled at close loop by a high precision load cell (± 1 DaN). This system, exclusive Melchiorre, allows to have quick and continous regulations of the working pressure and, consequently, a perfect repeatability of the loads.

The oscillation of the upper wheel is automatically adjustable, optimizing the surface of contact wheels- parts under process.

The machine provides also for a patented system of measuring control IN PROCESS, that permits to check the parts during the cycle and orders its stop automatically (device resolution: 0.1 micron). This technology ensures to accomplish the quality required without any further measurement:

  • THICKNESS VARIATION: ± 1 micron
  • FLATNESS: < 0.5 micron
  • PARALLELISM: < 1 micron
  • SURFACE FINISH Ra up to 0,01 micron

Special solutions can be introduced, as well, to let the customer improve its own technological product and be more competitive in the market.
Some examples of these solutions are the convex-concave grinding (a few microns) , the use of special spacers for the contemporary grinding of pumps covers, the polishing process or lapping on the same machines etc. Moreover, through specifically designed equipment, it is possible to perform a single side grinding process, keeping all the advantages of double side machines.

Finally, Melchiorre technological package includes also the optimization of the available time through customized automations for the loading of both parts and work-carriers.

The “ELC” sizes go from 400mm up to 2000mm.

Machining capacity

Type of grinding Lepuire
Workpiece fixture 6 buc.
Diameter clamping tool Ø254 mm
Maximum working diameter 230 mm
Grinding wheel size Ø880 mm
Dimensions of grinding wheel 4500 cm2
Motor moment 16 Nm
Spindel speed Max. 120 R/min
Spindel power 15 kW

Control type

CNC Grafica Melchiorre

Photos

Video

ELC MACHINE’S

The machines series “ELC” are designed for the double side fine grinding technology. ELC is the acronym of “Electronic-Logical Control”: the pressure, in fact, is applied electro-mechanically, through the movements of a ball screw controlled at close loop by a high precision load cell (± 1 DaN). This system, exclusive Melchiorre, allows to have quick and continous regulations of the working pressure and, consequently, a perfect repeatability of the loads.

The oscillation of the upper wheel is automatically adjustable, optimizing the surface of contact wheels- parts under process.

The machine provides also for a patented system of measuring control IN PROCESS, that permits to check the parts during the cycle and orders its stop automatically (device resolution: 0.1 micron). This technology ensures to accomplish the quality required without any further measurement:

  • THICKNESS VARIATION: ± 1 micron
  • FLATNESS: < 0.5 micron
  • PARALLELISM: < 1 micron
  • SURFACE FINISH Ra up to 0,01 micron

Special solutions can be introduced, as well, to let the customer improve its own technological product and be more competitive in the market.
Some examples of these solutions are the convex-concave grinding (a few microns) , the use of special spacers for the contemporary grinding of pumps covers, the polishing process or lapping on the same machines etc. Moreover, through specifically designed equipment, it is possible to perform a single side grinding process, keeping all the advantages of double side machines.

Finally, Melchiorre technological package includes also the optimization of the available time through customized automations for the loading of both parts and work-carriers.

The “ELC” sizes go from 400mm up to 2000mm.

Machining capacity

Type of grinding Lepuire
Workpiece fixture 6 buc.
Diameter clamping tool Ø630 mm
Maximum working diameter 600 mm
Grinding wheel size Ø2000 mm
Dimensions of grinding wheel 25000 cm2
Motor moment 90 Nm
Spindel speed Max. 80 R/min
Spindel power 75 kW

Control type

CNC Grafica Melchiorre

Photos

Video