Solutions for hard turning ball screw with CBN Inserts
Propose questions:The materials of ball screw are 42CrMo, and the hardness after quenching is HRC60~62, previous technology is ceramic inserts. It needs 9 steps to finish all tha working allowance, which will affect the efficiency obviously. And the ceramic insert will be easily chipping in the process, which will affect the product surface quality.
Specific for above problems, Halnn offer solutions as follows:
Halnn recommend Solid CBN Insert BN-S20 for hard turning ball screw, the cutting datas as follows: Vc=70~90m/min, Fr=0.1mm/r,ap=1~8mm, the application case details as follows:
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BN-S20 hard turning ball screw |
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Materials:42CrMo
Hardness:HRC60
Insert Model:BN-S20 CNMN120708
Cutting Data: Vc=90m/min，Fr=0.1mm/r,ap=4.5mm
Process: Dry Cutting
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Insert Materials |
Cutting Speed Vc (m/min) |
Cutting Depth ap(mm) |
Final Failure Mode |
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Halnn BN-S20 |
90 |
4.5 |
Normal Wear |
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Other Ceramic Insert |
65 |
0.5 |
Chipping |
Machining Effect: With BN-S20 Solid CBN Inserts hard turning ball screw, the cutting speed improved about 28%, the cuttign speed improve about 8 times, and the failure mode is normal wear, which meet all the customers’ requirements.