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Eccentric swing gear device

A technology of gear device and eccentric swing, applied in the direction of gear transmission device, transmission device, transmission device parts, etc., can solve the problem of lengthening the total length, and achieve the effect of shortening the total length

Active Publication Date: 2017-03-15
SUMITOMO HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, the structure disclosed in the above-mentioned Patent Document 1 has the following problem: Since a standard flange is provided for mounting the driven machine on the output flange of the gear unit, the total length after the driven machine is installed becomes correspondingly longer.

Method used

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Examples

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Embodiment Construction

[0025] Hereinafter, an eccentric oscillating gear device according to an example of an embodiment of the present invention will be described in detail with reference to the drawings.

[0026] figure 1 It is a cross-sectional view showing an eccentric oscillating gear device according to an example of an embodiment of the present invention, figure 2 is an enlarged sectional view of its main part, image 3 yes figure 1 side view, Figure 4 It is a cross-sectional view showing a part of an industrial robot incorporating a spot welding torch device on the gear device.

[0027] The eccentric oscillating gear unit G1 includes a housing 10 , an output flange 20 that rotates relative to the housing 10 , an external gear (oscillating gear) 30 that oscillates around its axis, and a crankshaft 40 that oscillates and rotates the external gear 30 . The gear unit G1 further includes a crank bearing 70 arranged between the crankshaft 40 and the output flange 20 , and an oil seal 72 arra...

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Abstract

The invention provides an eccentric swing gear device to shorten the total length of a gear device and a driven machine after attaching a driven machine. The casing (10), the output flange (20), the swing gear (30), the crankshaft (40) for rocking and rotating the swing gear, the crankshaft bearing (70) arranged between the crankshaft and the output flange, and an oil seal (72) disposed between the casing and the output flange. The output flange includes a flange main body (21) on which a crankshaft bearing is disposed and a mating member (93), And the auxiliary body is connected in a fitted state in a fitted manner, and the auxiliary body restricts the movement of the crankshaft bearing in the axial direction, and the auxiliary body supports the flange body and the auxiliary body The fitting portion (91) and the oil seal are overlapped by the OL (72 - 91) when viewed from the radial direction.

Description

[0001] This application claims priority based on Japanese Patent Application No. 2015-174224 filed on September 3, 2015. The entire contents of this Japanese application are incorporated herein by reference. technical field [0002] The present invention relates to an eccentric oscillating gear device. Background technique [0003] Patent Document 1 discloses an eccentric oscillating gear device. [0004] The eccentric oscillating gear device includes: a housing; an output flange that rotates relative to the housing; a oscillating gear; a crankshaft that oscillates and rotates the oscillating gear; a crankshaft bearing disposed between the crankshaft and the output flange; Between housing and output flange. [0005] A driven machine such as a spot welding gun is mounted on the output flange. In order to ensure compatibility in mounting with the gear unit side (drive source side), the driven machine often has a “connection dimension to the gear unit side” determined as a s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H1/32F16H57/023
CPCF16H1/32F16H57/023F16H2001/323F16H2057/02086
Inventor 志津庆刚芳贺卓
Owner SUMITOMO HEAVY IND LTD
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