CNC lathe with double-speed shifting feature in spindle axis
OwnerHsi-Kuan Cheninventor
Life of this patent
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Abstract
A CNC lathe with double-speed shifting feature in spindle axis comprises a frame, a screw rod pivotally disposed along a lengthwise spindle axis of the frame, a worktable assembly and a tool holder assembly; characterized in that the screw rod includes a positive thread section and a counter thread section for engaging two nuts respectively secured on the worktable assembly and the tool holder assembly; thereby when the screw rod is rotated by a servomotor, the tool holder assembly and worktable assembly are simultaneously shifted in opposite directions along the spindle axis for obtaining a relatively shifting speed at the double of conventional one, so that the non-cutting operation time of a CNC lathe is greatly reduced, and so that the overall machining speed and efficiency are improved.
Claims8
A CNC lathe with double-speed shifting feature in spindle axis for simultaneously shifting a worktable assembly and a tool holder assembly so that the worktable assembly is shifted relative to the tool holder with a shifting speed double of a shifting speed between a worktable assembly and a tool holder assembly when only one of the worktable assembly and the tool holder assembly is moved, the CNC lathe comprising:
- a frame having a lengthwise spindle axis direction and a widthwise direction perpendicular to the lengthwise spindle axis direction;
- a screw rod including two sections of opposite threads, namely a positive thread section and a counter thread section, and a pivotally disposed on the frame in the lengthwise spindle axis direction;
- a worktable assembly reciprocatably disposed on the frame in the lengthwise spindle axis direction, including a first nut engaging the counter thread section of the screw rod for reciprocating the worktable assembly in a shifting direction along the lengthwise spindle axis direction when the screw rod is rotated in one direction;
- a tool holder assembly reciprocatably disposed on the frame along the lengthwise spindle axis direction, including a second nut engaging the positive thread section of the screw rod for reciprocating the tool holder assembly in a direction opposite to the shifting direction of the worktable assembly along the lengthwise spindle axis when the screw rod is rotated.
Dependencies are inferred from the claim text.