To　achieve　constant　removal　rate　processing　for　non-round　parts　X-C　linkage　grinding,　grinding　removal　rate　was　decomposed　into　the　product　of　grinding　point　movement　speed,　the　grinding　contact　arc　and　the　parts　width;　the　C-axis　speed　was　adjusted　based　on　grinding　point　movement　speed　to　achieve　constant　removal　rate　grinding.　The　grinding　point　movement　speed　formula　was　developed　based　on　X-C　linkage　grinding　speed　relationship　model.　To　calculate　the　grinding　arc　length,　the　intersect　arc　length　between　the　curvature　circle　and　the　wheel　was　introduced　to　instead　of　the　grinding　contact　length.　Taking　the　flat　cam　grinding　for　example,　the　constant　angular　velocity　and　constant　removal　rate　grinding　were　carried　out　on　CNC　camshaft　grinder.　The　results　showed　that　the　constant　removal　rate　of　grinding　variable　speed　grinding　method　could　keep　the　grinding　force　more　stable　and　improve　the　processing　quality　of　non-round　parts　X-C　linkage.