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Feeding system consisting of multi-drive elements

A technology of feed system and drive unit, which is applied in the direction of metal processing machinery parts, maintenance and safety accessories, metal processing equipment, etc., which can solve the problems that cannot be compensated, and achieve the effects of suppressing mechanical vibration, improving surface quality, and increasing acceleration

Active Publication Date: 2010-01-06
NANTONG MACHINE TOOLS GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the combined center of gravity position W of the table and the workpiece rises in the direction of the Z axis, the driving force F dl , F dr The Y-axis moment M relative to the center of gravity of the external force F y In the same direction, no compensation can be obtained

Method used

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  • Feeding system consisting of multi-drive elements
  • Feeding system consisting of multi-drive elements
  • Feeding system consisting of multi-drive elements

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] figure 1 It is a schematic diagram in the X direction of a feasible structure of the feed system structure and drive unit arrangement form of the three drive units with double ball screws and linear motors in the present invention. In the figure, the workbench 14 adopts a ladder-shaped structure. In order to reduce the weight of the workbench, a process hole 15 is opened on it. The workbench 14 is connected to the base body 16 through guide rails 13a and 13b. The double ball screws 11a and 11b are respectively arranged on the workbench. On both sides of the table 14, the mover 12a of the linear motor 12 is fixedly connected to the bottom of the workbench 14, and the stator 12b is fixedly connected to the base 16. The linear motor 12 is not limited to be arranged at the symmetrical center of the bottom of the workbench 14. In the present invention, it is not required that the position of the center of gravity of the worktable 14 is in the same plane as the thrust action ...

Embodiment 2

[0036] Figure 4 The structure of the feed system in is a schematic view in the X-axis direction of a configuration of 4 drive units for loading the turntable 20 . Used to limit the turntable in the Z-axis direction image 3 In the case of the configuration of the third drive unit. In the figure, the workbench 21 also adopts a trapezoidal structure, and a process hole 22 is opened on it. The workbench 21 is connected to the base body 23 through the guide rails 19a and 19b. On both sides of the part above the guide rail in the platform 21 , the double drive units 18c and 18d are respectively symmetrically arranged on both sides of the part below the guide rail in the workbench 21 .

Embodiment 3

[0038] Figure 5 The feed system structure in is a schematic view in the X-axis direction for loading the main shaft 28 which also adopts the configuration form of 4 drive units. This structure is applicable to the limitation of the spindle in the direction of the Z axis image 3 In the case of the configuration of the third drive unit. In the figure, the workbench 26 adopts a rectangular structure, and a process hole 27 is opened on it. The workbench 26 is connected to the base body 29 through the guide rails 25a and 25b, and the double drive units (take the lead screw as an example) 24a and 24b are symmetrically arranged on the workbench respectively. 26 on both sides of the middle and upper part, and the double drive units 24c and 24d are respectively symmetrical to the two sides of the middle and lower part of the workbench 26.

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PUM

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Abstract

The invention discloses a feeding system consisting of multi-drive elements, which comprises a worktable. The worktable is connected with a basal body by tracks; dual-drive elements are respectively arranged at both sides of the upper part of the worktable; and additional drive elements are arranged at the lower part of the worktable. The structure of the feeding system of the invention realizes: when the gravity center position of the worktable randomly changes in a plane which is perpendicular to the direction of a drive force, the moments of corresponding gravity center formed by the drive force and an external force are both compensated, and thus, the mechanical vibration of the feeding system is farthest inhibited; the acceleration of the feeding system can be increased; and the surface quality of workpiece processing can be enhanced.

Description

Technical field: [0001] The invention relates to the field of mechanical structure design of a feed system, in particular to the arrangement of a feed platform drive unit (servo motor + ball screw or linear motor and other drive force output systems) and platform structure in the field of numerically controlled machine tools. Background technique: [0002] In the field of CNC machine tools, the feed system that carries workpieces, spindles and turntables is widely used. In high-speed and high-precision CNC machining centers, higher requirements are put forward for the acceleration, feed speed and accuracy of the feed system. Traditional single servo motor + ball screw or linear motor directly drives the feed system (take the ball screw as an example). Because there are machine parts in the middle of the workbench, or considering factors such as the rigidity of the platform structure, the drive unit cannot directly pass through its center of gravity W. At high cutting speeds...

Claims

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Application Information

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IPC IPC(8): B23Q5/22B23Q11/00
Inventor 张辉刘衍甘青翟栋叶佩青赵彤
Owner NANTONG MACHINE TOOLS GROUP