- Masterpiece in the world 2018/12/03 UP
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Masterpiece in the World #25
SAFE-LOCK with pull-out protection mechanism for end mill shank
- Tag
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- Holder
Spiral-shaped grooves prevent slip and pull-out of a tool even during heavy-duty cutting.
Adjustable overhang length for regrinding
In the past, a sidelock holder which secures an end mill shank was the only way to prevent the tool from pulling out or slipping during heavy-duty cutting of heatproof alloys or the like. However, with the sidelock holder, the shank is fastened at one end with bolts, causing unstable run-out accuracy and tool balance, which makes it difficult for operators to increase cutting conditions. Moreover, in the wedge-shaped or pin-type pull-out protection mechanism, tool overhang is shortened every time grinding is performed, which necessitates program changes.
Then, HAIMER has developed the SAFE-LOCK as an advanced system for pull-out protection and to improve run-out accuracy and tool balance. The SAFE-LOCK has received a high evaluation from customers. It passed a 64 Titanium cutting test conducted by Boeing.
The structure highly resistant to slipping and pull-out force
The SAFE-LOCK secures the end mill with the spiral groove on the shank side and the anti-rotation drive key on the holder side. Having high resistance to slipping and pull-out force, it maintains high run-out accuracy and good tool balance. Additionally, the screw-like structure enables adjustments of overhang length at the time of regrinding. If combined with the HAIMER power shrink chuck or heavy-duty chuck, it can minimize chatter and vibration during machining, thereby leading to extended tool life.
End mill replacements for reasons other than normal wear no longer required, significantly improving production efficiency
The SAFE-LOCK has been used for the heavy-duty roughing process of components used in the aerospace and power generation industries.
At a customer’s shop floor, an operator’s constant attention was necessary during machining of a heatproof alloy because the end mill would be pulled out. The use of HAIMER shrink fit holder equipped with the SAFE-LOCK and an end mill compatible with the SAFE-LOCK has eliminated the need for a constant attention to machine operation, allowing the operator to do other tasks during machining. It also eliminated end mill replacements resulting from causes other than normal wear.
In ordinary die and mold machining or high-speed aluminum cutting for aircraft parts, a cutting depth changes at corners, causing the end mill to be pulled out and the workpiece to be damaged. The SAFE-LOCK is quite effective in such cases. It can prevent damage to workpieces made of expensive materials such as heatproof alloy and aluminum, contributing to cost reduction.
Cool Flash achieves optimal coolant supply to tool tip even at 16,000 min-1
Coolant discharged through the tool holder scatters in a skirt-like manner when the tool rotates at about 6,000 min-1 or higher, preventing the coolant from reaching the tool tip. The HAIMER Cool Flash (option), a coolant supply system for shrink-fit holders, was developed to solve such issues. The Cool Flash supplies coolant through the multiple slots at the edge of the holder to enable the coolant to reach the tool tip even at 16,000 min-1. If the Cool Flash is used on a 5-axis machine, pressure boosting by a pump is not required, allowing you to minimize initial costs. In general, a tool with coolant holes must have a diameter of φ12 mm or larger for structural reasons. However, the Cool Flash is available for a tool with a diameter of at least 6 mm, so you can use standard tools.
Today, the structure of the SAFE-LOCK is the global standard for pull-out prevention, and HAIMER has signed the license partner agreement with various manufacturers. If you are seeking ways to increase productivity or improve machining quality, please feel free to consult with us.
| Haimer Japan K.K. Location：Higashi-Tenma ENVY Building 1-39, Matsugae-cho, Kita-ku JP 530-0037 Osaka-City Phone：+81-6-4792-7980 URL：https://www.haimer.biz/ |
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