What is in this article?:
- Automatic Loading for Grinding Small Parts
- Two grinding spindles
- High output, short cycle times
- Integrated quality control
VLC 100 G vertical pick-up grinder has three axes (X, Z, C), and uses its overhead pick-up spindle to load itself. It machines with one or two grinding spindles, for internal and/or external work. Workpieces are mounted on pallets and fed into the VLC 100 G by conveyor belt. Then, the pick-up spindle continues the automated loading and unloading process.
The global automotive industry appears to have passed its crisis point, noted EMAG Maschinenfabrik GmbH, observing that there are a number of production challenges remaining for the OEMs and their Tier suppliers. Specifically, the builder of pointed machine tools identified the need for “sub-contractors” to respond to the rising levels of automotive output, and to ensure that production process safety standards and component quality are not impacted adversely once production rates rise.
“In fact, even the smallest components with complex geometries must be produced with increasing levels of precision,” EMAG explained as it introduced its VLC 100 G vertical grinding center, based on a “machine concept (that) offers efficient, error-free machining processes for the production of small chucked components.”
Typically, small chucked components are produced in high volumes, and automotive demand for components like gearwheels, planetary gears, chain gears, and flanged components involve quantities in the millions. Also, the cycle times for producing these parts are increasingly shorter. EMAG described how the internal contour of a gearwheel must be ground as quickly as possible, and the machine’s workholding unit reloaded with a new workpiece just as quickly, so the rate of production can be met. “In many production environments, this represents a critical moment, because the idle time is commonly a decisive factor in establishing the economic viability of the whole process,” it detailed.
High output levels and short cycle times for small chucked components (maximum diameter 100 mm) were EMAG’s primary objectives in the design of the VLC 100 G vertical grinding center. The machine uses an onboard pick-up system to load itself, and while one workpiece is being machined the operator – or the automation system – is placing new workpieces on the conveyor belt. This reduces idle time and increases output rates. Another advantages is the vertical machining concept: the design ensures that the grinding sludge falls to the bottom of the machine, and then evacuated.
Measuring processes can be integrated into the machine, making quality control integral to the production process. The measuring probe is located between the machining area and pick-up station, where it is protected from contamination.