Precise linear two-dimensional double-drive workbench based on control of open numerical-control system

Abstract

The invention relates to the technical field of precision machining and ultra-precision machining of small-sized light-load machine tools, in particular to a precise linear two-dimensional double-drive workbench based on the control of an open numerical-control system. The precise linear two-dimensional double-drive workbench comprises a movable sliding table, an X-feeding-direction linear module, a Z-feeding-direction linear module, a base and the open numerical-control system. The movable sliding table is connected to the X-feeding-direction linear module through a flange with double screws and sliding blocks. The X-feeding-direction linear module is connected to the Z-feeding-direction linear module through a flange with double screws and sliding blocks. The X-feeding-direction linear module and the Z-feeding-direction linear module are arranged perpendicularly in an orthorhombic mode. The Z-feeding-direction linear module is arranged on the base. According to the precise linear two-dimensional double-drive workbench, by the adoption of the structure, the precise linear two-dimensional double-drive workbench has the characteristics of being high in accuracy, high in rigidity, free of gaps, and compact and attractive in appearance, and the precise linear two-dimensional double-drive workbench is suitable for precision machining and ultra-precision machining of small-sized and medium-sized light-load machine tools.

Description

technical field [0001] The invention relates to the technical field of precision and ultra-precision machining of light-load small machine tools, in particular to a precision linear two-dimensional double-drive workbench controlled by an open numerical control system. Background technique [0002] Precision and ultra-precision machining technology is the foundation of high-tech technology, and it is urgent to improve the precision of precision machining. With the gradual improvement of users' requirements for product precision and quality, precision machining equipment has attracted more and more attention. As the control object and execution structure of CNC machining equipment, the innovative design, performance optimization and control method of its system structure will directly affect the working performance of the equipment. [0003] According to the relevant literature, the traditional high-precision feed drive system adopts a single "servo motor + ball screw" driving...

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Problems solved by technology

[0007] Patent application number 201110377972.9 discloses a dual-rail dual-drive step-scanning device and method for double-workpiece platform exchange. There are 4 Y-direction linear motion units and 2 X-direction linear motion units preset above. The device only uses the Y-direction linear motion unit and the X-direction linear motion unit to form a double-rail dual-drive structure at the exposure station, and does not operate in the X or X direction. The Y direction adopts double drive technology, and because the workpiece table and the guide rail adopt a coupling connection mode, there will be a short separation between the workpiece table and the drive unit during the exchange process, which will affect the positioning accuracy of the workpiece table

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