} Vertical Machine Turns, Finish Grinds Parts in One Setup | Modern Machine Shop

Vertical Machine Turns, Finish Grinds Parts in One Setup


Facebook Share Icon LinkedIn Share Icon Twitter Share Icon Share by EMail icon Print Icon

Emag has developed the VLC 100 GT, which combines vertical turning and finish grinding. It is said to reduce cycle times for chucked components as large as 100 mm in diameter.

The machine uses the company’s pick-up concept, where the main spindle is used to load and unload workpieces from the integrated conveyor belt or shuttle. Users can equip the machining area with a variety of turning and grinding modules.

The first step is to pre- or complete-machine component surfaces that can be hard turned. Then, without changing the setup, the machine finish grinds areas that require high-precision geometries. This process has two advantages: the turning process is faster than grinding flat surfaces, and using the grinding tools for only finish grinding operations reduces wear and tear, the company says. Because the workpiece is machined in a single setup, the process is more efficient than when carried out on two machines. It also reduces costs and ensures quality.

The machine can be used as a conventional vertical grinding center, equipped with two grinding spindles for external and internal grinding, or for combination machining, with an additional block toolholder for hard turning operations. It can be equipped with corundum or CBN grinding technology, and users can dress vitrified-bonded CBN grinding wheels using a rotating diamond roll. A structure-borne sound system serves as GAP-control between the dressing roll and grinding wheel. An adaptive process control system promotes shorter cycle times.  

The Mineralit polymer concrete machine base damps vibration and improves surface finish.

An integrated measuring probe, located between the machining area and pick-up station for protection from debris, enables measuring to take place in the same setup either before or after machining to save clamping time. The probe can also take intermediate measurements.


  • What Is Single Point OD Grinding?

    Two enabling technologies -- superabrasive wheels and high precision servo control -- come together to provide a contour grinding process that resembles an OD turning operation. For many medium volume OD grinding applications, this method may be a means to consolidate several manufacturing steps into a single setup.

  • Double-Disc Grinding On The Move

    The double-disc grinding process is consolidating its position in automotive applications but is moving into other industries. Double-disc grinders are now easier to operate, and they have added capabilities for control flexibility, precision process control, faster changeovers, and grinding of nontraditional materials.

  • Getting The Most From Creep-Feed Grinding

    No other process can do what creep-feed grinding can do. Recent tests show even more can be gained by optimizing every element of a creep-feed system.