Our cemented carbide machining technology
Processing example of small hole with φ0.8±0.0005㎜
Machining details
Small hole EDM machining
WEDM machining
Machining shape
φ0.8×3㎜
Hole diameter：φ0.8±0.0005㎜
Roundness：0.001㎜ or less
Position：φ0.003㎜ or less
Processing equipment
Small-hole Drilling EDM (Sodick K3BL)
Wire EDM Machine (Sodick AP450L)
Machined carbide grade
KD20
*We are capable of this processing for all materials except stainless steel.
Customer's request
This is an example of ultra-high precision fine hole machining. The details of request are as below:
-To process a hole with diameter 0.8 ± 0.0005mm, roundness 0.001mm or less, and position diameter 0.003mm.
Since it was an ultra-high precision small hole machining that requires submicron accuracy, there were few vendors which could handle it.
Because of that, the customer contacted us.
Machining details
Based on the mechanical properties and product specifications requirement, we proposed the grade KD20, and moved on to processing.
This case involved small hole EDM machining and WEDM machining, however the request was to process high precision small hole at submicron accuracy. Due to the situation, it was necessary to pay attention to the following points.
-Because submicron machining accuracy is required, it was necessary to select special WE electric discharge machining conditions specialized for microfabrication.
-Because the product exceeded the measurement accuracy (± 1 μm) of our existing equipment, it was necessary to cross-check the inspection data with the customer.
Based on the machining data and machining know-how of similar shapes cultivated over many years, we repeated trial and error, selected special WE electric discharge machining conditions, and moved on to machining.
In addition, we carefully checked the measurement accuracy via verifying the inspection data with the customer.
By repeating the prototype processing, we were able to achieve a hole diameter of 0.7995 to 0.7997 mm, a roundness of 0.0004 to 0.0008 mm, and a position of 0.0004 to 0.0025 mm, which met the needs of our customer’s request.
Results of machining and service
This project was challenging as submicron processing accuracy was required, but we were able to manufacture a product that would satisfy our customers, using existing processing equipment and measuring instruments. Although they were a new customer, we have been highly evaluated for our ability to take on difficult projects that other vendors have refused.Because of that, we are continuously receiving requests for microfabrication of cemented carbide from the customer.
Cemented Carbide Material / Carbide Machining Solution Navigator has strengths in high-precision microfabrication and fine hole machining of cemented carbide.
For microfabrication of cemented carbide, it is necessary to repeat prototype processing based on the processing data in the past to determine the optimum conditions, and processing know-how is indispensable.
We are familiar with the characteristics of each material and will respond to customer's requests by carrying out processings that match the material. Of course, we also accept requests for processing with submicron processing accuracy, so please feel free to contact us.
Our cemented carbide machining example
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