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Straight.rotation mechanism

A rotary mechanism, straight-forward technology, applied in mechanical equipment, friction transmission devices, belts/chains/gears, etc., can solve the problems of complex structures of straight-forward and rotary mechanisms, and achieve the effect of reducing manufacturing costs

Active Publication Date: 2011-05-11
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In this way, in the conventional straight forward and rotary mechanism, a guide member for holding the position of the gripping mechanism and the pinion gear 64 is required, so there is a problem that the structure of the straight forward and rotary mechanism becomes complicated.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0037] use figure 1 Embodiment 1 of the rectilinear / rotary mechanism of the present invention will be described.

[0038] figure 1 It is a perspective view of Embodiment 1 of the rectilinear / rotary mechanism of the present invention.

[0039] The first-axis linear motor 1a and the second-axis linear motor 1b (hereinafter referred to as linear motors 1a, 1b) are arranged so that both movable parts 2a, 2b move forward and backward in parallel.

[0040] Shafts 3a, 3b are fixed on unshown supporting parts, and movable parts 2a, 2b can move along the shafts 3a, 3b. figure 1 to move up and down.

[0041] A ball nut 21a as a first screwing member is supported on the movable portion 2a, and a ball nut 21b as a second screwing member is supported on the movable portion 2b. The ball nut 21a and the ball nut 21b are screwed to one ball screw 4 as a third screw member parallel to the shafts 3a, 3b.

[0042] The ball screw 4 is screwed to the ball nut 21a and the ball nut 21b, but ...

Embodiment approach 2

[0063] figure 2 It is a perspective view showing Embodiment 2 of the rectilinear / rotary mechanism of the present invention. The first axis linear motor 201a (hereinafter referred to as linear motor 201a) and the second axis linear motor 201b (hereinafter referred to as linear motor 201b) share one shaft 203, and the movable part 202a of linear motor 201a and the movable part of linear motor 201b The portion 202b is provided on this shaft 203 . The other configurations are the same as those in Embodiment 1, and therefore description thereof will be omitted.

[0064] According to Embodiment 2, since the linear motor 201a and the linear motor 201b have a structure in which both movable parts are arranged on one shaft 203, the width dimension as a linear motion / rotation mechanism can be configured to be small.

[0065] In Embodiment 2, the linear motor 201a and the linear motor 201b have movable parts disposed on one shaft 203, but even if the shafts of the linear motor 201a an...

Embodiment approach 3

[0067] image 3 It is a perspective view showing Embodiment 3 of the rectilinear / rotary mechanism of the present invention. In the first-axis linear motor 301a (hereinafter referred to as linear motor 301a) and the second-axis linear motor 301b (hereinafter referred to as linear motor 301b), movable shafts 303a and 303b on which permanent magnets are arranged respectively constitute movable parts, The first ball nut 321a is supported at the end of the movable shaft 303a of the linear motor 301a, and the second ball nut 321b is supported at the end of the movable shaft 303b of the linear motor 301b.

[0068] In addition, the coil part 306a of the linear motor 301a and the coil part 306b of the linear motor 301b are comprised so that it may become a fixed part at the time of driving of the linear motor 301a, 301b, respectively.

[0069] The other configurations are the same as those in Embodiment 1, and therefore description thereof will be omitted.

[0070] In Embodiment 3, t...

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Abstract

The invention provides a straight and rotation mechanism, which is low in manufacture cost and simple in structure.A pair of axis motors (1a, 1b) are fixedly equipped with shafts (3a, 3b) in parallel.Rolling ball nuts (21a, 21b) are respectively fixed on the movable parts (2a, 2b) of the pair of axis motors (1a, 1b) as the screw members.The rolling ball nuts (21a, 21b) are equipped with rotating shafts in parallel with the central axis thereof.The rolling ball nuts (21a, 21b) are respectively screwed with the positive guiding part (41) and the negative guiding part (42) of a ballscrew (4), wherein a thread is formed by the two guiding parts in an opposite direction.By adopting the above structure, the straight motion and the rotation motion of the ballscrew (4) can be controlled at the same time by controlling the direction and the speed of the movable parts (2a, 2b).

Description

technical field [0001] The invention relates to a mechanism for linear motion and rotary motion. Background technique [0002] A straight-forward / rotary mechanism is installed in a device that linearly or rotationally moves objects to be conveyed. [0003] As a conventional straight-forward / rotary mechanism, the Figure 4 The straight-forward / rotary mechanism described in Patent Document 1 is shown in . [0004] The ball screw 62a is directly connected to the rotation shaft of the motor 61a of the linear advance mechanism 60a. [0005] A rack 63a is attached to the ball screw 62a, and the rack 63a is linearly moved by the rotation of the ball screw 62a. [0006] The same straight-forward mechanism 60b composed of a motor 61b, a ball screw 62b, and a rack 63b is disposed parallel to the straight-forward mechanism 60a and facing the tooth surface of the rack 63a. Between the rack 63a and the rack 63b, the pinion 64 is disposed so as to mesh with the teeth of both the rack 6...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H19/02
Inventor 佐武英和桥本昭仲兴起高石阳介井上正哉家泽雅宏
Owner MITSUBISHI ELECTRIC CORP
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