Halnn CBN insert for finish turning gears
In order to suit for high speed and strong strength working condition, the manufacturers will choose quenching after rough machining the gears to obtain high hardness .The hardness of the gear after heat treatment usually is about HRC60,and some gear has interrupted turning condition ,hard to machining, so it is very important to choose the cutting tools materials .Only choosing the most suitable cutting tools and the cutting parameters ,it will obtain excellent working efficiency and the gear precision .
If choosing the traditional cutting tools (such as carbide insert and ceramic insert) hard turning gear, it will often appear chipping phenomenon, which will affect the working efficiency and increase the cutting insert costs.
Halnn, as one professional manufacturer of cbn insert, continuous researching new type cbn insert with high performance and high quality, high efficiency. And Halnn cbn insert mainly used field as follows: high hardness cast iron, hardened steel ,gray cast iron and powder metallurgy industry.
Specific to gear finishing process, Halnn superhard researched non-metal adhesive cbn insert to hard turning gear. Compared with traditional insert ,When Halnn cbn insert hard turning gear, it will not chipping ,and the roughness will arrive Ra0.4,improving the working efficiency ,lower the processing costs, and is the most suitable cbn insert for hard turning gear process with HRC60.
Specific to gear finishing process, Halnn researched 2 grade cbn insert :
(1) BN-H11 grade pcbn insert, finish hard turning gear with high speed and high precision, such as machining gear wheel and gear shaft,ect. BN-H11 pcbn insert mainly suit for continuous processing with high efficiency and low costs.
(2) BN-H20 pcbn insert, finish hard turning gear end surface(with hole).BN-H20 cbn insert has high precision ,and suit for semi-interrupted turning process .
Application Case 1:
Halnn BN-H20 PCBN insert interrupt turning gear
Work piece Materials: 20CrMoTi
Processing Part: inner bore (semi-interrupted machining)
Insert Grade: HRC58~62
Cutting Parameters: N=1180r/min, Feed Rate: Fr=0.1mm/r, depth of cut ap=0.15mm,
Working Efficiency: When semi-interrupted turning gear inner bore, the cutting tools have excellent impact resistance and wear resistance, it will not have chipping phenomenon, and the precision will arrive Ra1.6~0.8.
Application Case 2:
Halnn cbn insert finish turning gear end surface
The work piece diameter: 167mm
The work piece materials: 20CrMnTi
The work piece hardness: HRC57~61(after quenching)
Machining Part: Gear end surface,
Cutting Type: interrupted Cutting
Insert Grade: WNGA080404
Cutting Parameters: Cutting Speed Vc=157m/min, the depth of cuts ap=0.3mm, Feed Rate: Fr=0.1mm/r
Working efficiency: One cutting edge can machining about 200 piece work piece,and will not have chipping phenomenon.
Halnn always devote to researching new type cbn insert to satisfy the customers’ requirements. More related to machining gear wheel, please check http://www.halnncbn.com/Solution/Gear_Wheels.html, or feel free to contact with us info@halnntools.com, skype:info@halnntools.com, whatsapp:+8615617635382