01.02.2018
Concentrated flexibility and efficiency – facing heads and mounting tools from MAPAL
Using facing heads and mounting tools, complex contours on rotationally symmetric components can be realised without the use of a lathe for stationary workpieces. This benefits end machining centres when both pipe ends have to be machined simultaneously and independently of each other. The Bühring machine manufacturer therefore decided on a CNC machining centre with a corresponding tool solution from MAPAL and since then operates significantly more flexibly and economically.
Machine manufacturer Bühring machines complex contours with high efficiency and precision
The effort and commitment paid off. The machine fitted with the latest technology has significant advantages compared with the outdated system previously used.
Simultaneous machining of both pipe ends
- The single-slide facing heads:
- External diameter of 380 mm
- Face stroke of 55 mm
Other features of the facing head:
- Central oil lubrication
- Internal coolant supply
- Barrier air at the HSK connection which is used to automatically hold the mounting tools
“Along with high process reliability, one of biggest advantages of the new system that showed effect immediately is the significantly faster component
change”, explains Bühring. “Refitting on the system previously used took around 2.5 hours. We now require around half the time. This is noticeable as we generally change the product at least once a week.”
Automated tool change using HSK-A63 connection
The products currently being manufactured are a dozen components that the customer requires for the construction of straw bale presses. Bühring generally delivers the components ready for installation, i.e. completely machined, welded and painted. One of these components is a rotor with 17 welded double rings each with two spikes that within a round baler is responsible for the optimum transport of the straw from the pick-up system to the straw bale press.
The basic body of the rotor:
- Made from thin-walled roller tube made of steel
- 1,200 mm long
- Diameter of 250 mm
MAPAL provides a suitable machining process
The surface quality required for the order – a roughness of Rz 25 μm must not be exceeded – is achieved without problem using the new machining concept. The main times vary depending on the machining task from a few seconds to a few minutes. “We can produce more precisely and efficiently with the new machine and the MAPAL tools”, says Sven Bühring. “And we have not yet optimised programming due to a lack of time so we expect further improvements in the future.”