Precision punch noise According to the type of noise generated can be divided
into no-load noise and load noise. No-load noise is a high-speed press no
material running noise, which contains motor noise, running parts of the impact
of noise, clutch and gear collision noise.
One of the most important source of
noise is the impact of clutch and gear noise. Load noise is a high-speed press
punching products generated when the noise, in the same high-speed press on the
use of different stamping process (such as punching, drawing, bending)
processing the same material noise is not the same. Precision punch motor noise.
As a power source, the noise generated when the motor running, including motor
windings of electromagnetic noise, aerodynamic noise and mechanical noise. Motor
noise level is mainly the size of the motor power, speed. Electromagnetic noise
of the motor, is generally caused by alternating electromagnetic field
interaction excitation of the rotor and stator vibration. Electromagnetic noise
is usually high-frequency noise punch
3d. Clutch noise. When the clutch is closed, the general high-speed punch
will have a 'jingle' sound. This is the intermittent sound generated by the
impact of the slider, the inertia force of the connecting rod in the
reciprocating operation, and the centrifugal force of the rotational quality of
the crankshaft. Clutch noise generated by the main factors are: Clutch closed by
the size of the impulse, in a certain state of quality depends on the speed of
high-speed punch impact speed; also contact with the stiffness and damping
characteristics of the material itself. Clutch has two kinds of rigid and
friction type, which friction in the small tonnage high-speed punch on the most
widely used, the noise is generally high punch
online, the noise is caused by a series of collisions. Noise of running
parts of precision punching machine.
There are three pairs of friction pairs in
the high-speed punch's crank-link slider structure: connecting rod small head
(ball head) and slider ball head seat; crankshaft journal and crankshaft tile;
crank neck and connecting rod big bearing. Due to production and commissioning
errors and practical needs, there is a gap between the necessity of these
components. The relative movement between components punch trump game, from free movement to
contact movement, inevitably bring the collision, the greater the gap, the
stronger the noise. In addition, the gap is fixed, the slider stroke the greater
the number, the greater the noise. The aerodynamic noise of the motor is
typically the cooling fan noise, which is the main noise source for most motors.
High-speed punch mechanical noise mainly contains some rotating parts of the
unbalanced force excitation generated noise and vibration generated when some
parts of the noise.
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