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The miniature coil is so small to see and compared,then how should we know it's size is correct ,how should we know it's dimension for different side?

What is the miniature coil?

Miniature coils made with Ultra-fine wire winding are quickly growing in popularity in the medical device industry.

With gauges ranging from AWG 45 (.0018”) to AWG 60 (.000309”), these wires can be as small as 1/10th the diameter of a human hair, allowing for noteworthy miniaturization in charging and receiving devices.

From above,we can know it is significant for the high precision device used on medical/Aerospace Engineering etc high technology industry.

So,more better the miniature coil is which served as one components(whatever on it's performance/size/inductance/resistance etc)the better for it's finished products.

Then how should we keep it's correctness at least on the size?

We will used the projector to measure the size from different dimension with other small tools.

OK-first introduce who are we:

Our ChengPin factory are specializing in the miniature coil for Hearing Aids/Medical Device and other high precision coil for over 18 years.

Can winding AWG56-57(0.0119)Wire with our wet winding technique which can hardly do in China Miniature coil factory 

With patience and technique and machine,there are less than 3 factory can do this in China.

Own more than 800 experienced workers and advanced automatic machine and imported serve tensioner.

Here we will share the way that we used

1: Prepare

1#  elastic press sheet、2#  work turntable  3# y axis control handle.   4#  reflectorlamp control switch  5# power switch、6# transmission lamp strong rank lamp  、7# rejects red tray、8# screen sheet 、9# Z axis control handle、10# X axis control handle、11# objective lens 、12# data display screen、13# projection screen Fine-Tuning rotate handle、 14#  projection screen 、15#  .data display screen switch

2:Check and test before projection:

a:turn on the projector power switch,put a glass grain rule on the projector work turntable

b:Turn the Fine-Tuning handle to make the white line on projection screen align at the arrows

c:Turn the X/Y axis handle and turntable to make the Y axis coordinated line on projector screen to Align with the stright line on grass grain rule( standard 10mm±0.005mm

D:Turn all the X/Y-Axis coordinate value on data display screen  into zero

e:Turn the X/Y-axis handle to make the Y-axis coordinate line on projector screen to Align with the stright line on grass grain rule( for example: Examine three times with size at 110-120mm standard 10mm±0.005mm )read the numerical value and record after alignment

products putting :take a products with wire arranged and put it onto the working turntable

ID measurement way: when the products inner diameter shows clearly,Align the X/Y Axis coordinate line with the Inner size A side and L1 Rim line,then Zero all the X/Y axis data on display screen.

B:move the X/Y Axis control handle,make the X/Y axis coordinate line align with the B side rim of the Inner diameter,then read the numerical value,(when measure the ID and RIB size,subject one side of the coordinate line close to the press line)

WBFK/FK-324 series:bottom rabbet B side size measurement way: arrange well the products wires,Aligning the X-axis coordinate line with the B side ID Rim,then Zero the X axis data,rotate the Z axis control handle until products outer edge clearly( this size included the pig tail glue on up rabbet)then read the data,same way for bottom rabbet A side

outer whole size measurement way: when the ID show clearly,Aligning the X/Y coordinate line with the ID edge,then rotate the control handle until the full products include completely and clearly, move the X/Y axis to align with one side zenith of the periphery, Zero the X/Y data on display screen,then move the X/Y Axis align with another zenith of the periphery, and read the numerical value

Measurement way for Periphery unilateral size :a when the products ID shows clearly, align the X/Y axis with the ID rim,after get the ID size,press the 2/1 buttom,move the X/Y Axis to align with the zenith of the measurand side.then read the numerical value.

Torsion measurement way:when product’s up and bottom rabbet ID shows clearly,Make the X/Y Axis align at the inner edge of A side,L1 or B size L2,then Zero the A data on display screen

rotate Z axis control handle until it’s products up and bottom rabbet ID shows clearly,turn the fine-tuning handle to make the Y axis parallel with the B side or D side, and adjust the X axis to make the projector Y axis overlap with the B or D side.and read the angle absolute value

products torsion reference the torsion specification tablesheet.

BK-262 carina Hem width measurement way: a:face down the products up rabbet on the glass grain rule,then put the rule onto the projector turntable

Make the X axis coordinate line align at one side carina,zero the data, measure another side carina,read the numerical value,(carina hem size drawing specification:0.0860 Max)

as per clients drawing specification request: when the whole size within the 0.0860 spec.but out of the carina hem size judge as NG.

Notes:1:Must keep the it flat and even when put the coil into the worktable

Up rabbet means the one close to the pig tail glue,
bottom rabbet means the one far away the pig tail glue

The Workers need wear the finger-cot on right thumb and index finger When operation

Projector spot check two times everyday.

5: WBFK/FK-324:when measure the B side size of bottom rabbet which should include the up rabbet pig tail glue,
rotate untill the shadow completely show and measure it's peak point)

6: Appearance check and pick up the products those need to do projection,all judged by the size measurement  way.

Above was may a little bit complicated,but rest assure our engineer and related workers are professional on test your products and keep the right performance and inductance etc.

If  you are sourcing the suitable supplier for your high quality miniature coil/high precision coil.you can try to connect with us

Let's talk and discuss more

Tel:0086-18979987730

Mail: pxyw@geplastic1.com

ChengPin Factory.