Manufacturing Process Gear & Shaft Manufacturing Associate Professor Su-Jin Kim School of Mechanical Engineering Gyeongsang National University 1

Powertrain Module of Automobile [모듈 공급업체] 현대모비스 한라공조 Engine [생산업체] 현대모비스 모토닉, 지코 화신, S&T대우 한국프랜지 SJM, 현대EP Transmission [생산업체] 현대위아 S&T중공업 에스엘 경창산업

Index Introduction of Gear Gear Machining Shaft & Gear Forming Bevel Cutting Bevel Forging

Gear Super, Helical Bevel(Straight, Spiral, Hypoid) Worm Shaft & Spline

Gear Hob Pitch Gear Hob © 2011 정영석, 세일공업 http://ma.gnu.kr/vod/Machining/Gear_Hob_Sim.avi Gear Hob Sim (20s) http://www.youtube.com/watch?v=aCRt6yVhXf0 Bevel Gear Sim (3min)

Hobbing A hob (cutter) is rotated one revolution to transfer each tooth profile onto a rotating gear blank. Used very often for medium to high sizes of production runs.  http://www.youtube.com/watch?v=TDzhSaSZrSg Gleason P90 Gear Hobber, 3 min

Gear Shaper The cutter engages the part on the forward stroke and pulls away from the part on the return stroke. Interference http://www.youtube.com/watch?v=Dd9Ekl9DPZg (60s) http://www.youtube.com/watch?v=CHQ1ZABx68o (140s)

Gear heat treatment Carburzing of Gears Induction Hardening of Gears Ferritic Nitrocarburizing of Gears http://www.youtube.com/watch?v=iI7QEI2g0lk (90s)

Gear Grinding Gear is grinded after heat treat to give fine finish and high accuracy. Gear grinding is the process of finish grinding gear teeth, often hardened to give a fine finish and high accuracy. The gear is typically machined with a grinding allowance before being heat treated (usually case hardened). After heat treatment the gear teeth are precision ground to the final dimensions, imparting a fine surface finish and precision sizing. Precision gear grinding is carried out using specialised gear grinding equipment. The process is usually carried out using a CNC gear grinder. Ground gears can be almost any size from small micro-gears right up to large, heavy power transmission gears for the mining or power generation industries. Rough grinding CNC gear grinder Finish grinding http://www.youtube.com/watch?v=w9x7BjDhxSs Gleason 1500G Titan 10min

Gear Machining Process of TIC Ring Gear 공정 Flow 선삭 수입검사 치절(황삭/정삭) 열처리 내경정삭 Pinion Gear 공정 Flow 선삭 수입검사 치절(황삭/정삭/정삭) 열처리 외경 완성 연마 래핑/Test 공정 Flow (Set화) 래핑 디버링 / 세척 TEST