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Novel six-degree-of-freedom parallel platform

A degree of freedom and parallel technology, applied in the direction of manipulators, program-controlled manipulators, manufacturing tools, etc., can solve the problems of poor structural rigidity, poor transmission accuracy, and many transmission links, and achieve less cumulative error, high precision, and increased structural rigidity. Effect

Inactive Publication Date: 2017-06-27
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to propose a new six-degree-of-freedom parallel platform to solve the problems of many transmission links, poor transmission accuracy and poor structural rigidity in the prior art

Method used

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Embodiment Construction

[0015] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0016] See attached figure 1 And attached figure 2 , a novel six-degree-of-freedom parallel platform of the present invention includes:

[0017] static platform 1;

[0018] A moving platform 4 arranged coaxially and parallel to the static platform 1;

[0019] And six linear drive assemblies 3 arranged between the static platform 1 and the dynamic platform 4, the two ends of each linear drive assembly 3 are respectively connected with the lower end surface of the dynamic platform 4 and the upper end surface of the static platform 1 through the ball joint 2, and the straight line The drive assembly 3 includes an end cover 3-1, a motor protective case 3-2, a piezoelectric linear motor 3-3, a motor fixing plate 3-4, a shaft coupling 3-5, a ball spline shaft 3-7, and a ball spline Female 3-8 and spline fixed housing 3-9, the piezoelectric linear motor 3-...

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Abstract

The invention provides a novel six-degree-of-freedom parallel platform, belongs to the technical field of movement organizations, and aims at solving the problems of a plurality of transmission links, low transmission accuracy and low structure rigidity in the prior art. The novel six-degree-of-freedom parallel platform comprises a fixed platform, a movable platform which is arranged coaxial and parallel to the fixed platform, and six linear driving assemblies which are arranged between the fixed platform and the movable platform, wherein two ends of each linear driving assembly are correspondingly connected with the lower end surface of the movable platform and the upper end surface of the fixed platform through spherical hinges; piezoelectric linear motors of the linear driving assemblies are fixed to motor fixing plates; output shafts pass through the motor fixing plates to be connected with ball spline axles through couplings; the ball spline axles and ball spline nuts form ball spline pairs; motor protecting housings sleeve the outer sides of piezoelectric linear motors; one end of each motor protecting housing is connected with the corresponding motor fixing plate, and the other end of each motor protecting housing is fixedly connected with an end cover; one end of a spline fixing housing sleeves the outer side of the corresponding ball spline nut and is fixedly connected with the corresponding ball spline nut, and the other end of the spline fixing housing is fixedly connected with the corresponding motor fixing plate.

Description

technical field [0001] The invention belongs to the technical field of kinematics, and in particular relates to a novel six-degree-of-freedom parallel platform. Background technique [0002] Compared with the series mechanism, the parallel mechanism has the advantages of high precision, high rigidity, small additional inertia, small volume and simple structure, so it has been widely used. The most commonly used six-degree-of-freedom parallel mechanism is the UPS configuration, that is, a single outrigger is composed of the lower Hooker hinge (U), the middle linear drive component (P), and the upper compound ball hinge (S), and then consists of six outriggers and The dynamic and static platforms together constitute a six-degree-of-freedom parallel platform. The six-degree-of-freedom parallel platform of this configuration has the following defects: (1) There are many transmission links. In this configuration, there are 2 shafts and 2 pairs of bearings in the Hooke hinge, 3 ...

Claims

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Application Information

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IPC IPC(8): B25J9/00
CPCB25J9/00B25J9/003
Inventor 赵海波董吉洪赵伟国
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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