Presicion progressive punching die for electric appliances
Metal Stamping Die Capability
· Die Insert Tolerence: +/-0.005mm
· Stamping Speed: 1000SPM/min
· Tooling Life: 50-300 million times
Progressive stamping is a metalworking method that can encompass punching, coining,
bending and several other ways of modifying metal raw material,
combined with an automatic feeding system.
The feeding system pushes a strip of metal (as it unrolls from a
coil) through all of the stations of a progressive stamping die.
Each station performs one or more operations until a finished part
is made. The final station is a cutoff operation, which separates
the finished part from the carrying web. The carrying web, along
with metal that is punched away in previous operations, is treated
as scrap metal. Both are cut away, knocked down (or out of the
dies) and then ejected from the die set, and in mass production are
often transferred to scrap bins via underground scrap material
The progressive stamping die is placed into a reciprocating
stamping press. As the press moves up, the top die moves with it,
which allows the material to feed. When the press moves down, the
die closes and performs the stamping operation. With each stroke of
the press, a completed part is removed from the die.
Since additional work is done in each "station" of the die, it is
important that the strip be advanced very precisely so that it
aligns within a few thousandths of an inch as it moves from station
to station. Bullet shaped or conical "pilots" enter previously
pierced round holes in the strip to assure this alignment since the
feeding mechanism usually cannot provide the necessary precision in
Progressive stamping can also be produced on transfer presses.
These are presses that transfer the components from one station to
the next with the use of mechanical "fingers". For mass production
of stamped parts which do require complicated in-press operations,
it is always advisable to use a progressive press. One of the
advantages of this type of press is the production cycle time.
Depending upon the part, productions can easily run well over 800
parts/minute. One of the disadvantages of this type of press is
that it is not suitable for high precision deep drawing which is
when the depth of the stamping exceeds the diameter of the part.
When necessary, this process is performed upon a transfer press,
which run at slower speeds, and rely on the mechanical fingers to
hold the component in place during the entire forming cycle. In the
case of the progressive press, only part of the forming cycle can
be guided by spring-loaded sleeves or similar, which result in
concentricity and ovality issues and non uniform material
thickness. Other disadvantages of progressive presses compared to
transfer presses are: increased raw material input required to
transfer parts, tools are much more expensive because they are made
in blocks with very little independent regulation per station;
impossibility to perform processes in the press that require the
part leave the strip (example beading, necking, flange curling,
thread rolling, rotary stamping etc.).
The dies are usually made of tool steel to withstand the high shock
loading involved, retain the necessary sharp cutting edge, and
resist the abrasive forces involved.
The cost is determined by the number of features, which determine
what tooling will need to be used. It is advised to keep the
features as simple as possible to keep the cost of tooling to a
minimum. Features that are close together produce a problem because
it may not provide enough clearance for the punch, which could
result in another station. It can also be problematic to have
narrow cuts and protrusions.
|Mould material||SKD11/51/61,SKH-9,S136, ASP60, ASP23, S45C, CD650,
|Product material||copper, brass, metal, gold, bronze|
|Processing methods||Forings,CNC milling and turning,Grinding,Casting,Broaching,etc.|
|Processing equipment||CNC machine,Automotic lathe machine,EDM machine,Stamping
machine,Punching/Drilling machine,Ultrasonec cleaning machine,etc.|
|Detection equipment||Projector,Calliper,Height gauge,Screw gauge,Hardness gauge,etc.|
|Application||Electronic:Vehicle parts,CNC machining parts,Wireless receiver
plastic part, 3G/4G Modem Wireless Network Cards,USB housing.
Automotive interior parts: connector, navigation frame, car key.
All kinds of connectors, digital parts.|
|surface treatment||Plating,Painting,Powder coating,Anodization,Ball blasting|
|Vibration grinding,Polishing,Brushing.or according to customer’s
|Design software||PROE ,CATIA, SOLIDWORK, CAD,etc.|
|Cavity||Single / Multi per request|
|Mould life||1-30million shots|
|Specification||Many years machining parts processing experience;Precision
tolerance less than 0.001mm;Depends on customer’s requirements.|
|Delivery||Normally within 7-45 days (according to customer drawing, quantity
and material) special case will be sooner|
|Package||Wooden case or as customer's requirements|
How to start a new mould business?
|1.Quote||According to samples/picture/design, 2/3 D drawing and
|2.Discussion||Mould core/base material, cavity number, runner type, price,
|3.PI||Approval for all terms|
|4. Deposit||50% by T/T|
|5.Product Design||Our engineer will check product drawing, and pick up the
|6.Mould Design||Our engineer will do DFM and send PPT to customers for approval|
|7.Mould making||We start to make mould after customers confirmed the drawing|
|8.Mold Testing||We will express trial samples to customers by DHL for confirmation|
|9. Mould repair||We will modify the mould according to customer’s feedback|
| || |
|10. Mould approval||Express trial samples by DHL again till products approval|
|11.Balance payment||50% by T/T before delivery|
|12.Delivery||Delivery by sea or air, all documents as customer required|
Stamping die shows: