Deep Hole Drilling Systems Cover Range of Applications
IMTS 2018: Unisig showcases equipment designed for gundrilling, BTA drilling, bottle boring and skiving/roller burnishing applications.
Unisig will showcase a range of gundrilling, Boring and Trepanning Association (BTA) drilling, bottle boring and skiving/roller burnishing equipment. Machines can be tooled for a variety of applications, including hydraulic cylinders and components for industries including medical, aerospace, die and mold, automotive, energy, and firearms.
In addition, the company will feature a custom machine from its research and development lab. The machine will demonstrate the extreme depth-to-diameter ratios possible with the latest control technologies. The machine possesses CNC motion control capabilities to produce accurate, off-center gundrilled holes.
The company will also introduce its expanded line of deep hole drilling and machining centers designed for moldmakers. These machines complement the company’s existing USC-M series of four- to seven-axis deep hole drilling and machining centers. Four-sided machining capability enables manufacturers to process large and small parts alike in a single setup.
One of the most common methods of tapping in use today on CNC machines is 'rigid tapping' or 'synchronous feed tapping.' A rigid tapping cycle synchronizes the machine spindle rotation and feed to match a specific thread pitch. Since the feed into the hole is synchronized, in theory a solid holder without any tension-compression can be used.
The more common twist drill point geometries often are not the best for the job at hand. By choosing the best point for the material being drilled, it is possible to achieve better tool life, hole geometry, precision, and productivity.
Achieving acceptable tool life and hole quality in a material such as CFRP demands a drill designed with composites in mind.