Backspotfacing up to 2.3 x the bore diameter
The standard range consists of back counterboring tools for use with bore diameters ranging from 6.5 mm to 21 mm in 0.5 mm increments. The maximum possible counterboring diameter is 2.3 times the bore diameter. The tools can be activated both by internal coolant pressure ( min. 20 bar, max. 50 bar) or compressed air (min. 6 bar).
|Bore diameter range||Counterbore diameter||Series|
|6.5 mm to 7.0 mm||9.5 mm to 16.5 mm||A series|
|7.5 mm to 8.5 mm||11.0 mm to 20.0 mm||B Series|
|9.0 mm to 10.0 mm||13.5 mm to 23.0 mm||C Series|
|10.5 mm to 11.5 mm||15.5 mm to 26.5 mm||D series|
|12.0 mm to 14.0 mm||18.0 mm to 32.5 mm||E series|
|14.5 mm to 17.0 mm||21.5 mm to 39.5 mm||F series|
|17.5 mm to 21.0 mm||26.0 mm to 49.0 mm||G Series|
Should no standard tool solution be available for your application, HEULE can make a detailed application analysis. The result will be an application-specific solution.
The BSF is specially designed for automatic operation and is ready for use immediately. It does not require a torque arm or any machine adaptations. The simple design of the back counterboring tool enables the swift replacement of individual parts and blades. Standard range carbide blades are coated and available in increments of 0.5 mm. The specially designed geometry of the tool ensures that chips and dirt are reliably flushed out of the blade window during counterboring.
The blade is extended by centrifugal force caused by the spindle rotation and retracted by activating the machine's internal coolant. Alternatively, if the machine is not equipped with internal coolant, there is also the option of activating the blade using compressed air. The counterboring tool is suitable for vertical and horizontal use.
The tool is moved in rapid feed in front of the bore. When the internal coolant is activated, the pressure on the control bolt causes the blade to retract. In this position, the tool moves through the bore. After turning off the internal coolant and activating the spindle rotation, the blade is extended. In working feed, the counterbore is now machined on the back of the bore. Once the blade is in the cut, the internal coolant can be switched on again.
Once the tool has reached the desired bore depth, the internal coolant is switched off. The tool is then removed from the counterbore and the spindle is stopped. The subsequent activation of the internal coolant retracts the blade, allowing the tool to be removed from the bore in rapid feed.
Do you wish to find out more about BSF technology? Visit our downloads section for detailed information, videos and operating instructions.
We demonstrate this in our 20-minute Online Seminar "back SPOTFACING up to 2.3 x bore diameter". Click on the link below and have a look.
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