1) Detection and repair of bed rails
The V-shaped guide rail of the bed shall meet the following accuracy requirements after inspection: the straightness in the vertical plane ≤0.01mm/m; the straightness in the horizontal plane ≤0.01mm/m; the non-verticality of the sliding saddle guide rail ≤0.02mm/ 250m; the contact point requires 12-14 points/25mm×25mm.
The plane guide rail of the bed shall meet the following accuracy requirements after inspection: the non-parallelism of the V-shaped guide rail ≤0.02mm/m; the straightness in the vertical plane ≤0.01mm/m; the contact point requires 12-14 points/25mm×25mm .
2) Detection and repair of sliding saddle rails
The sliding saddle V-shaped guide rail should meet the following accuracy requirements after inspection: the straightness in the vertical plane is less than or equal to 0.01mm in the full length; the contact point requires 10-12 points/25mm×25mm.
The sliding saddle flat guide rail should meet the following accuracy requirements after overhaul: the non-parallelism of the V-shaped guide rail is ≤0.02mm/m; the contact point requires 10-12 points/25mm×25mm.
3) Adjustment of the gap between the grinding wheel spindle and the bearing bush
Paint on the journal of the main shaft of the grinding wheel, grind it with the bearing bush, and scrape the surface of the bush with a scraper to make the contact point reach 12-14 points/25mm×25mm, and then adjust the installation and adjust the gap between the main shaft of the grinding wheel and the bearing bush to 0.0025 ~0.005mm, which can avoid the roundness of the workpiece during grinding.
4) Balance of grinding wheel spindle motor and grinding wheel
The vibration of the grinding wheel spindle motor has a great influence on the grinding surface roughness, so it is necessary to dynamically balance the grinding wheel spindle motor. The grinding wheel needs to be balanced twice: first, the grinding wheel is trimmed with a diamond pen, and then a rough balance is performed; then the grinding wheel is finely repaired with a whetstone or a finishing wheel after a fine turning, and then a fine balance is performed.
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