Hangzhou Powersonic Equipment Co., Ltd. |
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Descripersion
The Ultrasonic drilling is a drilling device that uses vibrations in order to hammer its bit through materials, as opposed to traditional drilling methods. The drill uses a piezoelectric actuator as its source of power, and utilizes a variety of 'horns' to vibrate, or hammer, its bit through the material. prototype of the drill was first released in April 2000, which weighed 1.5 lb. (.7 kg) and had the capacity to drill half-inch holes into granite using only 10 watts of power, whereas the modern household half-inch drill requires 750 watts. The USDC was originally designed to be able to drill through very rigid rock surfaces that would otherwise be damaged by a rotary drill, but has also shown potential usefulness to the field of medicine. It is the specific characteristics of the drill that make it ideal or practical for certain situations.
Ultrasonic drilling is a non-traditional, loose abrasive machining
process. In this the mirror image of a shaped tool can be
created in hard, brittle materials. Material removal is
achieved by the direct and indirect hammering of abrasive particles
against a workpiece.
By concentrating ultrasonic energy through a machines, tapered
solid metal horn to a stainless steel tube (drill) which vibrates,
in an abrasive medium, the ultrasonic drill penetrates hard
materials with extraordinary ease and rapidity. For example by
using as 1mm tube, it will drill through a piece of agate 5mm thick
in approximately one minute. All types of gemstone material may be
drilled with the Model ultrasonic drilling as well as glass
and ceramic materials. The ultrasonic drilling minimizes the
concern one experiences drilling fragile and precious material. The
machine consists of two components, the amplifier which generates
the power for drilling and a transducer head which converts
electrical into mechanical energy. The workpiece is hand held
without harm to the operator
How it works
The ultrasonic drilling is driven by a Piezoelectric stack actuator
that creates the vibrations. The actuator vibrates at an extremely
high frequency, making it ultrasonic, and it is these waves of
vibration that are transmitted by the horn of the actuator all the
way to the bit itself. The vibrations are created at the actuator
and are transferred by the horn to a free mass. The free mass
vibrates between the drill stem and the horn of the actuator to
transmit the vibrations down the drill stem. The drill stem houses
the drill bit, and the vibrations push the bit into the material.
The repetitive impact on the drill stem by the free mass, creates
stress pulses that transmit to the tip of the bit and into the
rock. Ultimately, the repetitive strike of the bit produces enough
strain on the surface to fracture it.
ITEM | PARAMETER |
Frequency | 20Khz |
Power | 100W |
Amplitude | 1-5um |
Dameter | 40MM |
Application:
When drilling brittle and hard materials such as glass or ceramics, they will often overheat and fracture due to stresses associated with ordinary rotational drilling or laser cutting methods. Substrates, windows and wafers of all types may be ultrasonically drilled including glass, ceramics, quartz, 96% and 99.6% Alumina, and Aluminum Nitride. The smooth, controlled cutting action of a lubricated ultrasonic rotary drill plus a water coolant reduces diamond tool binding. This enables faster, more efficient cutting using lighter tool pressure than with conventional machining. The lighter tool pressure simplifies drilling small diameter holes, long and deep holes, and adjacent holes close together all producing superior results. Less friction also reduces the stress imposed on the material caused by conventional diamond tool machining.
Other drilling services are also available from Valley Design
including conventional diamond drilling and diamond core drilling.
Sapphire, Glass, Fused Silica, Quartz, Silicon, Ceramics, AlN, 96%
and 99.6% Alumina and others can be drilled, lapped, polished and
shaped.