• 제목/요약/키워드: TiAlN Coated Ball End Mill

검색결과 8건 처리시간 0.027초

초경 볼 엔드밀의 TiAlN 코팅 처리조건이 건식가공환경에서 고경도 강재의 절삭 특성에 미치는 영향 (The Effect of TiAlN coated Ball End Mill on Cutting characteristic of High Hardness Steels in Dry Condition)

  • 박동순;원시태;이영주;허장회
    • 한국소성가공학회:학술대회논문집
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    • 한국소성가공학회 2005년도 추계학술대회 논문집
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    • pp.344-349
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    • 2005
  • This paper is studied on the effect of TiAlN coated ball end mill on cutting characteristic of high hardness steels in dry cutting condition without coolant. KP4 steels[HRC32] and STD11[HRC60] heat treated steels wert: used as the workpiece and WC-Co ball end mill and single and multi layer TiAlN coated ball end mill were utilized. Results showed that TiAlN coated ball end mill were increased the cutting length than WC-Co ball end mill in the cutting speed$[245\~320m/min]$ about $2\~5$ times for KP4 steels and about $2.7\~4.3$ times for STD11 heat treated steels. The multi layer TiAlN coated ball end mill is good about $1.2\~1.7$ times for KP4 steels and STD11 steels than single layer coated.

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고경도 강재의 MQL 가공시 초경 볼 엔드밀의 TiAlN 코팅 조건이 절삭 특성에 미치는 영향 (The Effect of TiAlN coated Ball End Mill and MQL Cutting Condition on Cutting characteristic of High Hardness Steels)

  • 박동순;원시태;이영주;허장회
    • 한국소성가공학회:학술대회논문집
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    • 한국소성가공학회 2004년도 추계학술대회논문집
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    • pp.245-251
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    • 2004
  • This paper is studied on the effect of TiAlN coated Ball End Mill and MQL(Minimum Quantity Lubrication) cutting condition on cutting characteristic of high hardness steels. KP4 steels[HRC32] and STD11[HRC60] heat treated steels were used as the workpiece and WC-Co ball end mill and single and multi layer TiAlN coated ball end mill were utilized in the cutting tests. MQL device was used to spray botanical oil coolant. Result showed that TiAlN coated ball end mill were increased the cutting length than WC-Co ball end mill in the cutting speed[$245{\sim}320m/min$] about $2.3{\sim}5.7$ times for KP4 steels and about $2.5{\sim}4.3$ times far STD11 heat treated steels. The multi layer TiAlN coated ball end mill is good for KP4 steels than single layer coated.

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볼 엔드밀을 이용한 크라운 치형을 갖는 직선 베벨기어 금형 가공 (Machining of Straight Bevel Gear Die with Crown Teeth Using Ball End Mill)

  • 이강희;이기용;안동규;박용복
    • 한국공작기계학회논문집
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    • 제17권6호
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    • pp.104-110
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    • 2008
  • A lot of straight bevel gears have been manufactured by the cold forging process in order to improve the productivity and mechanical property of the product. The die for the cold forging of the gear needs high precision and reproducibility. In the study, cold forging die has been modeled by CAD/CAM and manufactured by machining center using ball end mill coated by (Al, Ti)N for heat-treated alloy steel(STD11, HRC 60). Through the measurement of the machined die, satisfactory dimensional accuracy and surface roughness were obtained. In the future, many 3-d cold forging dies will be directly machined instead of electric discharge machining.

AlTiN 코팅 층수에 따른 볼 엔드밀의 마모특성에 관한 연구 (A Study on the Wear Characteristics of the Ball End Mill According to the AlTiN Coated Layers)

  • 조규재;이승철
    • 한국정밀공학회지
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    • 제27권8호
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    • pp.54-61
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    • 2010
  • In this research KP-4, one of the plastic mold steels, was coated with the AlTiN from one layer to four layers by the PVD method in the $\Phi$ cemented carbide ball end mill. Coated KP-4 was processed with various conditions. For example, slope of $15^{\circ}$, $30^{\circ}$ and $45^{\circ}$ the spindle rotation speed was changed from 10,000rpm to 16,000rpm, the tool feeding speed was changed from 1,300mm/min to 1,700mm/min, the depth of cut was also changed from 0.3mm to 0.9mm, and etc. Cutting component force according to the coating layer number, surface roughness, and the wear of tool were studied.

AlTiN코팅공구를 사용한 플라스틱금형강의 기계가공성 평가 (Machinability Evaluation of the Plastic Mould Steel using AlTiN Coated Tool)

  • 이승철;조규재
    • 한국생산제조학회지
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    • 제18권6호
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    • pp.629-635
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    • 2009
  • In this research, KP-4, one of the plastic mold steels, was coated with the AlTiN from one layer to four layers by the PVD method in the $\Phi$ 8mm cemented carbide ball end mill. Coated KP-4 was processed with various conditions. For example, slope of $15^{\circ}$, $30^{\circ}$ and $45^{\circ}$ the spindle rotation speed was changed from 10,000rpm to 16,000rpm, the tool feeding speed was changed from 1,300mm/min to 1,700mm/min, the depth of cut was also changed from 0.3mm to 0.9mm, and etc. Cutting component force according to the coating layer number, and surface roughness were studied. The cutting component force showed a good agreement better the up ward direction than the down ward direction under all experimental conditions. In case of the condition per the material shape, it was lessen when the tool have larger angle because the average effective diameter of the tool is larger. The surface roughness showed good condition in case of the up ward than the down ward direction. And, in the 3rd layer of AlTiN coating, it showed the most suitable condition.

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볼 엔드밀 AlTiN코팅 층수에 따른 플라스틱금형강의 고속가공에 관한 연구 (A Study on the High Speed Characteristics of Plastic Mould Steel using Ball End Mill AlTiN Coated Layers)

  • 이승철;조규재
    • 한국기계가공학회지
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    • 제9권1호
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    • pp.81-86
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    • 2010
  • This paper investigated into process characteristics of AlTiN coated layers for machining to the direction of upper and lower in plastic mold material (KP-4) with the cemented carbide ball endmill with the diameter of 8mm coated AlTiN layers (1~4) step by step using machining center. The material used in experiments was KP-4 that was machined by three types of inclined angles; $15^{\circ}$, $30^{\circ}$ and $45^{\circ}$ As estimated mechanical properties of AlTiN coated layers, it was shown the most result in the condition of three layered coating that the coating that the coating depth, the hardness of the coated layer and the surface roughness of the coated layer were $13{\mu}m$, Hv 3027.3 and $0.042{\mu}m$, respectively. The cutting component was better at the condition of upper direction than that of lower direction in all experimental conditions and indicated to be less which the bigger angle of the material was increased the effective diameter of the tool.

볼 엔드밀 가공환경 조건이 고경도 강재의 절삭 특성에 미치는 영향 (Effect of Ball End Mill Cutting Environments on Machinability of Hardened Tool Steel)

  • 이영주;원시태
    • 소성∙가공
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    • 제13권1호
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    • pp.45-52
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    • 2004
  • This research conducted milling tests to study effects of cutting environment conditions of ball end mills on the characteristics of hard milling process. KP4 steels and STD11 heat treated steels were used as the workpiece and WC-Co ball end mill tools with TiAlN coated were utilized in the cutting tests. Dry cutting without coolant and semi-dry cutting using botanical oil coolant were conducted and MQL(Minimum Quantity Lubricant) device was used to spray coolant. Cutting forces, tool wear and surface roughness were measured in the cutting tests. Results showed that dry cutting of KP4 and hardened STD11 specimens produced better surface quality and wear performance than MQL spray cutting did.

미세홈 고속가공시 절삭유제 공급방식에 따른 가공성 평가 (Cutting Characteristics of Micro grooving by Cutting Environments in High Speed Machining using Ball End Mill)

  • 배정철;정연행;강명창;이득우;김정석
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 2002년도 추계학술대회 논문집
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    • pp.172-175
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    • 2002
  • High speed machining is one of the most effective technologies to improve productivity. It can give great advantage for manufacture of die and Moulds. However, when machining of micro groove in high speed machining a severely thermal damage was generated on workpiece and cutting tool. Generally, the cutting fluid is used to improve penetration. lubrication. and cooling effect. In order to rise the performance of lubrication. it contains extreme pressure agents (Cl, S, P). But the environment of work room go bad by those additive. Therefore, the compressed chilly air with oil mist system was developed to replace the conventional cutting fluid system. This paper carried out the tests to evaluate the machinability by the cutting environment in high speed micro groove machining of NAK80 (HrC40). Compressed chilly air with oil mist was ejected on the contact area between cutting edge and workpiece. The effect of this developed compressed chilly air with oil mist system was evaluated in terms of tool life. The results showed that the tool lift of carbide tool coated TiAlN with compressed chilly air mist cooling was much longer than that of the dry and flood coolant when cutting the material.

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