Fine blanking is similar to extrusion where the metal is extruded through die cavities to form the desired gear tooth geometry.
Fine blanking sheet metal.
Sheet metal blanking process fine blanking process.
Sheet thickness varies from 0 1 mm up to 12 mm and width up to 350 mm.
Figure 1 when a punch makes contact with the sheet the metal begins to deform and bulge around the point of the punch.
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Fine blanking is a high precision type of blanking which is the die cutting of the outside shape of a part.
The working principle fine blanking of a typical spur gear is presented in fig.
The fine blanking provides parts having smooth edge better flatness and high tolerance.
Fine blanking permits 3 d composite processing including coining semi shearing bending and drawing.
The tooling of fine blanking clearance will affect the final stamped part burrs height.
A typical compound fine blanking press includes a hardened die punch male the hardened blanking die female and a guide plate of similar shape size to the blanking die.
Image courtesy of dayton progress.
It is also similar to stamping but differs in the sense that it uses two opposing dies to form the gear from sheet material.
Fine blanking ensure stability regarding production with high quality and precision.
Fine blanking presses are similar to other metal stamping presses but they have a few critical additional parts.
Which blanking process sheared the sheet metal in three type of force separately applied.
Fineblanking is a specialty type of metal stamping that can achieve part characteristics such as flatness and a full sheared edge to a degree that is nearly impossible using a conventional.
Hope the following picture of a stamping factory experience will help you understand what is fine blanking and what difference between fine blanking and common punching and blanking process for sheet metal parts.
The fineblanking technology enables manufacturing of precision components without any finishing operation of the blanking cutting surface since the sheet metal is held still with an additional press force.
It ranges from 0 0003.
