Five freedom degree numerically controlled fraise machine

A technology of CNC milling machine and degree of freedom, which is applied in the field of CNC milling machines and can solve problems such as poor stiffness, complex CNC programming, and high cost

Inactive Publication Date: 2006-06-21
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the disadvantages of poor rigidity, low precision, complex structure and high cost of existing parallel machine tools, as well as the inconvenient processing, manufacturing and installation of existing five-degree-of-freedom parallel mach

Method used

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  • Five freedom degree numerically controlled fraise machine
  • Five freedom degree numerically controlled fraise machine
  • Five freedom degree numerically controlled fraise machine

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Experimental program
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specific Embodiment approach 1

[0007] Embodiment 1: The five-degree-of-freedom CNC milling machine described in this embodiment includes a milling machine bed 1, a platform base, a machining tool 3, and an electric spindle 9 that controls the movement of the machining tool 3. It also includes a milling machine bed 1 or The three-degree-of-freedom RPS mechanism connected to the platform base, the three-degree-of-freedom RPS mechanism is composed of the lower platform 4, the motion platform 5 and the telescopic rod 6 composed of the screw nut mechanism, and the telescopic rod 6 is three, each Both ends of the telescopic rod 6 are hinged with the lower platform 4 and the moving platform 5 respectively. The specific hinge mode is that the telescopic rod 6 is connected with the lower platform 4 through the rotating pair 7 , and the telescopic rod 6 is connected with the moving platform 5 through a ball hinge 8 or a Hooke twist.

specific Embodiment approach 2

[0008] Embodiment 2: The difference from Embodiment 1 is that this embodiment describes the specific milling machine bed and platform base structure. refer to figure 1 , the milling machine bed 1 is a vertical bed, the machining tool 3 and the electric spindle 9 are installed on the bed; the platform base is a two-degree-of-freedom platform base, which includes a base 2-2 and The mobile platform 2-1 arranged on the base 2-2, the upper surface of the base 2-2 is provided with an X guide rail 2-3, and the upper surface of the mobile platform 2-1 is provided with a Y guide guide 2-4 ; The three-degree-of-freedom RPS mechanism is arranged on the mobile platform 2-1, that is, the lower platform 4 on the three-degree-of-freedom RPS mechanism is arranged on the Y guide rail 2-4; the series part includes the mobile platform 2-1, the base 2- 2 and the lower platform 4 of the three-degree-of-freedom RPS mechanism, the movement of the lower platform 4 of the RPS mechanism relative to th...

specific Embodiment approach 3

[0009] Embodiment 3: The difference from Embodiment 2 is that this embodiment describes another specific structure of the milling machine bed and platform base. refer to figure 2 , the milling machine bed 1 is a gantry-type bed, and X guide rails 2-6 are installed on the beam of the gantry-type bed; the three-degree-of-freedom RPS mechanism is hung upside down on the beam of the gantry-type bed, and the specific connection structure It is: a slider is provided on the bottom surface of the lower platform 4 of the three-degree-of-freedom RPS mechanism, and the slider is installed in the X guide rail 2-6, and the one-dimensional movement of the RPS mechanism in the X direction can be realized by the motor 2-5; The motion platform 5 of the RPS mechanism is connected with the lower platform 4 through a telescopic rod 6 composed of a screw nut mechanism. The upper end of the telescopic rod 6 is a rotating pair 7, and the lower end is a three-degree-of-freedom spherical hinge 8 or a...

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Abstract

The five freedom numerically controlled milling machine is superior to available one, which has inconvenient manufacture and installation, complicated programming, and other demerits. The five freedom numerically controlled milling machine consists of a bed, a platform pedestal, a machining tool and a main electric shaft to control the machining tool, as well as a three freedom RPS mechanism. The three freedom RPS mechanism consists of a lower platform, a moving platform and telescopic rods comprising lead screw and nut mechanism, and each of the three telescopic rods has its ends hinged separately to the lower platform and the moving platform. The milling machine of the present invention has high rigidity, high precision, simple and symmetrical structure, low cost, simple manufacture and installation, high machine accuracy and convenient programming.

Description

technical field [0001] The invention relates to a numerically controlled milling machine. Background technique [0002] In the past ten years, parallel machine tool has been a hot topic in the field of CNC machine tool research at home and abroad. Parallel machine tools, also known as virtual axis machine tools, are knowledge-intensive, intelligence-intensive, and technology-intensive mechatronics high-tech products. They are the intersection of multidisciplinary application technologies such as parallel robots, CNC machinery, computer control, precision measurement, and CNC machining. Scholars at home and abroad have invested a lot of research work on it. [0003] Judging from the general situation of the development of parallel machine tool products and technologies at home and abroad, most of the research in the past few years has focused on the six-degree-of-freedom parallel mechanism. In recent years, people have paid more and more attention to parallel mechanisms wit...

Claims

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Application Information

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IPC IPC(8): B23C1/14B23Q1/01B23Q1/48
Inventor 王瑞王知行钟诗胜刘文涛
Owner HARBIN INST OF TECH
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