Sandvik Coromant Threading - Manual (Page 25)

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2. Applications – Thread turning
External Internal
Right hand
threads Right hand
threads
Right hand
tool/insert
Right hand
tool/insert
Right hand
tool/insert
Right hand
tool/insert
Left hand
threads Left hand
threads
Left hand
tool/insert
Left hand
tool/insert
Left hand
tool/insert
Left hand
tool/insert
Left hand
tool/insert
Left hand
tool/insert
Left hand
tool/insert
Right hand
tool/insert
Right hand
tool/insert
Right hand
tool/insert
A negative shim must be used.
Thread turning methods
A thread can be produced in a number of ways. The spindle can rotate clockwise or
anticlockwise, with the tool fed towards or away from the chuck. The thread turning tool can
also be used in the normal- or upside-down position (the latter helps to remove chips).
Working away from the chuck
Using right-hand tools for left-hand threads (and vice-versa) enables cost savings through
tool inventory reduction (a negative shim must be used). Care must be taken due to the
risk of insert movement, particularly at the beginning of the thread.
Most
common
Most common