Fast changeover between gun drilling and BTA
- January 25, 2016
UNISIG has added a new machine to its UNI series of deep hole drilling machines: the UNI-50BTA. The machine allows operators to change quickly from BTA to gun drill deep hole drilling tooling.
This allows drilling holes with diameters as small as 8 mm (0.31 in.) and as large as 65 mm (2.56 in.), at depth-to-diameter hole ratios of 100:1 or greater. The new machine makes it possible to drill with eitehr tooling method within the diameter range in the same part without secondary operations, says the company.
The UNI-50BTA features a pressure head design that enables operators to make the tool change without dismantling the machine, reducing the time for changeover from several hours down to as low as 10 minutes. The machine further enhances productivity by combining elements from UNISIG’s other successful product lines into one high value machine. This provides flexibility in demanding high production or high precision applications, such as aerospace landing gear actuators, helicopter main shafts and diesel engine and transmission components. The machine features high accuracy feed and zero endplay spindles for bottom forming operations, counter rotation to minimize centerline drift and preloaded ballscrew drives for precise depth control.
As the largest machine in the UNI series, the UNI-50BTA is available in modular lengths, with the longest able to produce centerline bores up to 3,000 mm (118.1in.) deep in the toughest materials. Other drill depths available are 1,000 mm (39.4 in.), (1,500 mm) (59.1 in.), and 2,000 mm (78.7 in.). The machines complement high efficiency, multi-tasking turning centres, says the company. The system includes BTA and gundrill durable tooling, training, and installation.
The machine uses a multi-lingual interface with process monitoring and graphical display of critical information for ease of operations. Fluid delivery and chip discharge strategies are programmed depending on the finished tolerance objectives and the starting condition of the parts. Automatic process interruption enables unattended operation for improved productivity, says UNISIG.