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Tooth surface defects - eating teeth

Update:11 Dec 2017
Summary:

The reason Due to the hob and the tooth blanks the loca […]

The reason
Due to the hob and the tooth blanks the location of each other a sudden change caused
  1) Column triangular guide is too loose, resulting in sudden changes in hob feed Column triangular rail is too tight, causing the phenomenon of crawling
  2) Tool holder helical gear meshing gap
  3) Hydraulic instability to find and eliminate some sudden factors
Countermeasures:
  1) Adjust the column triangular rail: tight tightness requirements
  2) Turret should be replaced if worn for a long time
  3) Reasonable maintenance of machine tools, especially clean, so that the oil flow to maintain smooth: oil pressure remained stable

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