RUBOMETRIC Type D self-opening die heads AKON Werkzeuge GmbH

RUBOMETRIC Type D self-opening die heads are suitable for economical cutting of all common forms of threads in every length no matter right or left-hand; the latter requires using left-hand chasers. The die heads can be used on turning machines, turret lathes, single and multi-spindle automatic lathes, threading machines, drilling machines, or on other machines suitable for cutting threads. RUBOMETRIC Type D die heads are manufactured in accordance with the GEOMETRIC system and therefore the chasers of other brands of die heads such as GEOMETRIC type D and EFEM type G fit into  UBOMETRIC Type D die heads as well.

Advantages of the die heads:

• Shorter working time
  Reverse movement is no more necessary as the die head opens automatically after the cutting process has ended and the chasers are automatically retracted from the threads.
• No reversal in the rotary direction of the machine‘s spindle is necessary after thread cutting has been completed.
• Usage of the die head in accordance with the machine‘s construction type. (The die head is inserted into the tailstock of the machine, and thread is cut by rotating the workpiece)

or

• Rotating (The die head rotates and the workpiece remains static)
• Simple and accurate adjustment of the die head, for cutting threads in fine tolerance.
• By adjusting the die head you can cut over- or undersized threads using the same chasers.

Operation of the die head

To initiate thread cutting you need to either manually or mechanically move the die head to the workpiece. The thread length to be cut is set by means of a work stop, where the release path (a) needs to be taken into consideration as well. Once the desired length is reached, the die head will no longer move forward. The die head opens automatically and the chasers release the work. The die head can now be withdrawn over the cut thread and reset.

Die heads with a Morse taper shank

RUBOMETRIC die heads can also be supplied with Morse taper shanks, in accordance with DIN 228. When utilizing this design, the thread length to be cut is limited, as the Morse taper does not permit cutting of just-any thread length. The maximum possible thread lengths are:

• Size DS 5/16“ = approx. 70 mm
• Size D 9/16“ = approx. 100 mm
• Size D 3/4“ = approx. 130 mm
• Size D 1“ = approx. 140 mm

Each die head is supplied with a user instruction manual.