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TECHNICAL GUIDE

PUNCHING TOOLS

Vol.7 ABOUT TURRET PUNCH PRESS MACHINE

TECHNICAL GUIDE

PUNCHING TOOLS

Vol.7 ABOUT TURRET PUNCH PRESS MACHINE

A turret punch press machine is a machine in which a large number of tools having different shapes are arranged in a disk-shaped or fan-shaped turret, NC-controlled table and clamp holding and moving a work (workpiece) are performs punching and forming into place.

NAMES AND FUNCTIONS OF MAIN PARTS OF THE TURRET PUNCH PRESS MACHINE

① UPPER TURRET / LOWER TURRET

Toolholders which several tooling are set on.
A large number of tools can be mounted, and the turret of these tools is rotated and moved by NC-control and selected.

Misalignment of the upper and lower turret center leads to product failure/tool breakage.
We recommend that you perform maintenance with a centering fixture etc.
regular basis.
② STRIKER

A slide part that moves up and down with the force of a crank, hydraulic force or servomotor, and transmits the driving force of the press to the tool.Push down the punch (upper) downwards by moving up and down.

③ CLAMP

The part that holds the material.
The specified position of the work is moved to the base of the tool by NC control.

④ TURRET KEY

Positioning the angular shaped tool in the rotational direction.

Wear of the turret key leads to core misalignment of the tool and phase shift, which may cause machining failure and damage to the tool.
We recommend that you perform maintenance on a regular basis.
DESCRIPTION
⑤ LIFTERS

Hold the upper tooling and put it up after punching.

⑥ DIE HOLDER

To be set on Lower Turret.

Contamination such as slug and powdery dust may be mixed in the die holder.
Contamination of foreign matter leads to tool installation failure and can also cause tool breakage.
Be sure to do cleaning when set up the die.
In addition, by attaching a brush die or a roller die to a holder which is not used, it is possible to prevent contamination and prevent scratches on the back side of the work.

FEATURE OF TURRET PUNCH PRESS

  • ■Unlike a press machine, the machining position of the tool and material installed in the turret can be controlled by program, and it can be processed with any tool.
    For this reason, different products do not need to be changed or can be done in a short time.
  • ■Although the products are different, it allows to use same tool as long as hole or forming dimensions are same.
  • ■It is also possible to produce various types of small quantities in combination with automatic material supply, take-out device, automatic tool changing.
DRIVING METHOD OF TURRET PUNCH PRESS
MECHANICAL PRESS(CRANK PRESS)

A system in which the striker is operated by changing the rotational force of the flywheel to a vertical motion via the crankshaft and the crank.

〔 Mechanism of Crank Press 〕

Mechanism of Crank Press
HYDRAULIC PRESS

A system in which a piston is moved up and down by a hydraulic oil pressure to operate a striker.

Features of Hydraulic Press
  • ①Bottom dead point is adjustable by Machine program.
  • ②Top dead point is also adjustable by machine program which allows to process at high speed.
  • ③Less noise comparing to Crank press.

〔 HYDRAULIC PRESS 〕

HYDRAULIC PRESS
SERVO PRESS

A method of operating the striker by converting the rotational force of the servomotor directly or indirectly to vertical movement via a crank.

Fig.3 Mechanism of Servo Press ①
Fig.3 Mechanism of Servo Press ②
Features of Servo Press
  • ①High accuracy, high productivity,low noise, energy saving.
  • ②It is possible to program of pressure and speed control.

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