Main uses and structural features
★ The machine tool is a special CNC sleeve and spindle grinding machine with three-axis (X axis is work piece transverse feeding, Z1 and Z2 grinding wheel longitudinal movement) two linkage grinding machine. It is mainly used to grind the inner hole, inner conical hole, inner end face, outer circle, outer conical surface and outer end face of various spindle and sleeve. The grinding cycle is completed automatically (with automatic feed, withdrawal, rough grinding and fine grinding); Automatic dressing of grinding wheel, automatic compensation, etc.).
★ The machine tool adopts the structural mode of work piece box do transverse feeding and worktable (grinding wheel frame) do the longitudinal movement. The moving guide rails of work piece feeding and grinding wheel frame are rolling linear guide rails, which are driven by servo motor through ball screw. The rotation speed of work piece spindle and grinding wheel spindle are controlled by frequency converter to realize stepless speed regulation. The work piece clamping adopts the clamping mode of chuck + center frame or double center frame + traction. At the same time, other matching fixtures can be configured according to the particularity of the user's work piece.
★ The machine tool is a fully enclosed protective cover, with a front rotary operation box and a rear backpack electrical cabinet.
Main technical parameters
| S.N. | Name | Technical specification |
|---|---|---|
| 1 | Grinding ID (taper hole) scope | 20-200 ( mm ) |
| 2 | Max. Grinding ID (taper hole) depth | 200 ( mm ) |
| 3 | Max. Grinding OD | 300 ( mm ) |
| 4 | Max. Clamping length of work piece | 1200 ( mm ) |
| 5 | Motor power of work piece | 2.2 ( KW ) |
| 6 | Servo motor power of X axis | 20 ( NM ) |
| 7 | Servo motor power of Z1 Z2 axis | 11 ( NM ) |
| 8 | Motor power of grinding wheel 1 | 4 (KW) |
| 9 | Motor power of grinding wheel 2 | 22 ( KW ) |
| 10 | Motor rotating speed of grinding wheel 1 | 0—2800 (r/min) stepless speed regulation |
| 11 | Motor rotating speed of grinding wheel 2 | 0—24000 (r/min) stepless speed regulation |
| 12 | Rotating speed of work piece | 0—500 (r/min) stepless speed regulation |
| 13 | Positioning accuracy of X Z1 Z2 axis | 5 ( um ) |
| 14 | Repeat positioning accuracy of X Z1 Z2 axis | 5( um ) |
| 15 | Max. Stroke of X axis | 550（mm） |
| 16 | Max. Stroke of Z1 Z2 axis | 2（μm） |
| 17 | Max. Moving speed of X axis | 450 ( mm ) |
| 18 | Max. Moving speed of Z1 Z2 axis | 28( KW ) |
| 19 | Size of machine tool | 10 ( m/min) |
| 20 | Weight of machine tool | 4800 x 2800 x 2700 ( mm ) |
| 21 | Rated power (about) | 8200 ( KG ) |
| Machining accuracy | ||
| 1 | ID/OD roundness | 2 ( um ) |
| 2 | ID/OD cylindricity | 3 ( um ) |
| 3 | ID and OD concentricity | 3 ( um ) |
| 4 | Roughness of inner hole, outer circle and end face | Ra0.4 ( um ) |
| 5 | Perpendicularity of inner hole, outer circle and end face | 4 ( um ) |
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