This study implements a high-precision camshaft profile grinding system by retrofitting the C-axis and X-axis structures of an existing cylindrical grinding machine and integrating CNC variable monitoring and control functions based on the manufacturer-provided Programming Package. The original inverter-driven C-axis was replaced with a servo motor to enable precise angular positioning, while a linear scale was additionally applied to the X-axis to establish a closed-loop system capable of high-precision infeed control. Changes in the grinding wheel diameter due to dressing are compensated by real-time monitoring of internal CNC variables, enabling regeneration of the profile grinding program to prevent degradation of form accuracy. Perfomance evaluation showed that the camshaft profile accuracy was maintained within ±4 μm, and the consistency of the profile was sustained within ±2.5 μm over repeated grinding cycles. This study presents a practical technological foundation for converting cylindrical grinding machines into profile grinders capable of precision machining of non-circular components such as camshafts.

Abstract
1. 서 론
2. 시스템 개조 설계
    2.1 C축: 서보모 터 기반 가공물 회전축(workspindle) 개조
    2.2 X축: 리 니어 스케일 기반 절입축 개선
    2.3 C-X축 동기 연삭 구조 구현
    2.4 모 듈형 기계 구조 설계 및 장비 통합
3. HMI 및 CNC 제어 개선
    3.1 제조사 프로그래밍 패키지 기반 변수 모니터링
    3.2 형상 기반 가공 프로그램 생성 메 커니즘
4. 성능 시험 및 평가
    4.1 형상 정밀도 및 반복 정밀도 측정
5. 결 론
References

• 손병로(R&D Center, HANKOOK CAICO CO., LTD.) | Byoung-Lo Son
• 이정훈(professor, Dept. of Control & Robotics Engineering, Gyeongsang National University) | Jung-Hoon Lee Corresponding author