Общий каталог Widia 2017

Reamer Troubleshooting

Problem	Cause	Possible Remedy
Hole diameter too large Nom diameter Hole diameter too small Nom diameter	1. Reaming tool running out of centre. 2. Concentricity of pilot hole and ream machining unsatisfactory. 3. Built-up edge. 4. Unsuitable cooling lubricant. 5. Reaming tool diameter too large. 1. Reamer worn. 2. Unsuitable cooling lubricant. 3. Reaming allowance too small.	• Use equalising adaptor. • Re-align, use fl oating head. • Change cooling lubricant. • Change cutting speed. • Measure reamers and send for repairs. • Replace and refi t tool. • Change cooling lubricant. • Increase reaming allowance.
Conical hole profi le wider towards drill runout Nom diameter	1. Concentricity of pilot hole and reaming unsatisfactory. 2. Positioning accuracy of pilot hole to reaming.	• Re-align, use equalising adaptor. • Correct positioning accuracy.
Conical hole profi le wider at drill entry point Nom diameter	1. Concentricity of pilot hole and reaming unsatisfactory. 2. Reaming tool skim cutting with ledger.	• Re-align, use fl oating head. • Securely clamp reaming tool axially.

(continued)