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Two dimension moving three dimension rotating virtual shaft machine tool

A virtual axis machine tool and three-dimensional rotation technology, which is applied in metal processing, metal processing equipment, manufacturing tools, etc., can solve the problems that are not suitable for large-scale processing, complex curved surfaces, difficult large-inclination machining CNC programming, and small working space. Achieve good structural shock resistance and cutting stability, realize large inclination angle machining, and reduce machining errors

Inactive Publication Date: 2003-04-16
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the virtual axis machine tool based on the 6-SPS parallel mechanism also has shortcomings such as small working space, difficulty in realizing large-inclination machining, complex and difficult NC programming, and easy interference between legs.
Therefore, the existing virtual axis machine tools are not suitable for machining large parts with complex surface types

Method used

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  • Two dimension moving three dimension rotating virtual shaft machine tool
  • Two dimension moving three dimension rotating virtual shaft machine tool
  • Two dimension moving three dimension rotating virtual shaft machine tool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The principle of embodiment 1 is attached figure 1 As shown, the overall structure is as figure 2 shown. The virtual axis machine tool of this embodiment consists of a frame 6, a fixed platform 7 fixed on the frame, a moving platform 11 on which cutting tools are installed, a worktable 12 that can drive the workpiece to move along the Y direction, and two ends connected to the fixed platform respectively. The platform is composed of 5 connecting legs of the moving platform. Five connecting legs form a space parallel closed chain structure with the moving platform and the fixed platform. Wherein the connecting leg 10 is designed with two moving pairs, one of which is the outer moving pair 4, which is driven by a servo motor 8, and is connected with the fixed platform 7 through the components of the moving pair. Under the action of the external moving pair 4, the connecting leg can perform translational and telescopic movements along the X direction. Another moving p...

Embodiment 2

[0044] The overall structure of the virtual axis machine tool of the present embodiment is as shown in accompanying drawing 3, and its overall structure and the structure of a connecting leg 10 that contains two moving pairs are all the same as in Embodiment 1, and the difference is that a moving pair is designed 4 legs with the same structure, the structural legs are all composed of fixed length rods 19 and an outer moving pair, the outer moving pair is composed of a guide rail 20 arranged on the frame 6, a ball screw 18 and is configured with the guide rail and the ball screw The ball nut slider 17 constitutes, and the slider 17 can slide up and down along the guide rail under the drive of the servo motor 16 and the ball screw 18. One end of the fixed-length rod 19 is connected with the slide block 17 through a Hooke hinge, and the other end is connected with the moving platform 11 through a spherical hinge. This embodiment also enables the cutting tool on the moving platfor...

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Abstract

A machine tool with 2D-moving and 3D-rotating virtual shafts is composed of a fixed platform, a movable platform for installing cutting tool to it, and a bench carrying workpiece to move in single direction. The fixed and movable platforms are linked via 5 legs containing moving pairs. One of 5 legs has two moving pairs and one ball joint to be linked to the movable platform. One of two moving pairs is linked with the fixed platform. Another 4 legs are linked to the fixed platform via Hooke's hinges and to the movable platform via ball joints. Its advantages are five-shaft linkage, simple structure,and high stability and precision.

Description

1. Technical field [0001] The invention belongs to the technical field of numerical control machine tool manufacturing, and in particular relates to a novel structural design of a virtual axis numerical control machine tool. 2. Technical background [0002] The traditional CNC machine tool adopts a tandem mechanical structure. The disadvantages of this machine tool structure are bulky mechanism, many parts, long transmission chain, bulky, complex structure, expensive cost, and uneven force and thermal deformation of various parts of the machine tool. During the machining process, the joint action of tension, pressure, bending moment, and torque causes the machine tool to deform and vibrate, and the accumulation of errors leads to the reduction of machining accuracy. In addition, due to the heavy and bulky parts, the increase of speed and acceleration in the processing process is limited. [0003] In the existing virtual axis machine tool based on the 6-SPS parallel mechanis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q41/04
Inventor 徐礼钜范守文李翔龙田贵云
Owner SICHUAN UNIV
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