Clamping Method and Alignment Measures for Turret Lathe

There are two clamping methods for turret lathes, one is the inline type and the other is the VDI type.

An inline turret is a tool that is directly installed on the tool holder. Due to the lack of intermediate adapters in the inline turret, the rigidity of the tool after clamping is good, but changing the tool takes time. When selecting a tool, the form and size of the tool should be determined based on the width of the turret groove. When installing drilling and drilling tools, an adapter is required. The tool holder is made of self boring holes and is not interchangeable. During installation, attention should be paid to matching the machine tool with the tool number. The dimensions of the boring cutter and drill bit should refer to the form and size of the adapter seat, and transition sleeves can be added if necessary.

VDI turrets cannot be directly installed and require various forms of VDI adapters. Due to the installation of these tool holders on the surface of the turret, the cantilever beam is longer and not as rigid as the inline type. The interface between VDI turret and tool holder is mainly determined by the tool aperture on the end face of the turret. If the tool aperture is 40mm, the VDI tool holder should choose the VDI40 interface. In addition, when selecting the tool holder, it should be noted that the VDI tool holder is divided into left and right tool holders, front and back tool holders, etc. This depends on the orientation of the machine tool turret and processing technology. Adjustment measures for clamping of turret lathe:

1. Clamp the workpiece onto a four jaw single action chuck. To increase the degree of freedom of the workpiece in the horizontal direction during alignment and prevent damage to the outer circle, a narrow copper plate is placed at the jaws of each chuck.

2. Place a flat plate on the bed and use a marker to find the centerline of the eccentric reference circle.

3. Using the cross line correction method, move the marking plate parallel from left to right along the eccentric lines on both sides, and reverse it by half a turn. Repeat the correction of the workpiece position and the height of the marking needle to ensure that the eccentric lines are evenly distributed on the left, right, and up and down positions. Until the height of the needle is the same.

4. Tighten the claws of each chuck in the opposite direction and ensure that the position of the workpiece is aligned and unchanged.

5. If the eccentricity accuracy of the CNC lathe is required to be high, the eccentricity of the workpiece can be regarded as the circular jump momentum, and the swing difference of the dial gauge can be directly corrected.