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"Selfeeder Electric" Pneumatic Feed Drilling Unit Q&A

Electric Q&A

Q1. What is the rapid feed rate of the Selfeeder?

The appropriate value is 50 to 100 mm/sec.


Q2. What is an adjustable spindle nose?

It is a Selfeeder spindle specification that can be installed to an NT tool or adjustable holder (multi-axis quick holder or stub holder) sold by Kuroda Precision Industries.

The adjustable holder is an adapter that can externally adjust the allowance of a tool in advance and can minimize downtime when changing tools.

Note: Sugino Machine does not provide the main body of the holder. Please prepare it yourself.


Q3. What is the difference between Electric and Mechatric?

Electric has a feeding mechanism that is pneumatically controlled by an air cylinder.
Mechatric has a feeding mechanism that is electronically controlled by a servo motor and ball screws.

The spindle rotation mechanism in each system is almost the same, and it transmits the rotation of the induction motor to the spindle through the timing belt.


Q4. How can I choose the proper Selfeeder?

Usage conditions and costs should be considered when choosing the proper Selfeeder; however, Electric is better suited for high-volume production of a single product.

On the other hand, Mechatric is better suited for production of various types of products because it can register many kinds of programs.

Also, because Mechatric performs stable feeding, it has advantages such as lessening burrs, extending the tool lifetime, and lowering running costs.


Q5. What is the difference between drilling processing with the hydraulic slide table and processing with the Mechatric?

Because you can register many programs (40 by external search) with Mechatric, it can easily handle simultaneous multiple product production and changes in work design.

Also, you can choose the most suitable processing pattern from among 12 types, including step feeding and skip feeding, thereby enabling easy programming, and effects such as longer tool lifetime and improved roughness of processed surfaces can be achieved.

By combining the hydraulic slide table and spindle unit, it is possible to increase the amount of units processed by using a carbide burnishing drill, which costs JPY 35,000 per unit, from 3,000 to 25,000.