Increased efficiency dust catcher equipment manufacturing method of Fogging in andesite

AbstractShipping plays an important role in the world, transporting over 80% of international trade and employing over 1.5 million seafarers. The maritime industry, including shipbuilding and equipment manufacturing, is extensive. Both of these interconnected businesses are facing rapid change caused by increasingly speedy technological development and the tightening of environmental regulation. This survey-based research analyzes the current and future competence needs of firms operating in maritime logistics and the maritime industry. The findings indicate that in both contexts, the increasing importance of various general competences is understood and the need is recognized in particular to improve those related to environmental regulation as well as technology and automation. Overall, the gap between current and desired levels of competence is expected to widen. In terms of education, this is likely to affect vocational training and university-level learning differently in that functional competences are emphasized more in the former and social and meta-competences in the latter.

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Research on the Two-stage Technology Innovation Efficiency of Equipment Manufacturing industry in Henan Province — Based on Stochastic Frontier Analysis method

2020 International Conference on Modern Education and Information Management (ICMEIM) ◽

10.1109/icmeim51375.2020.00137 ◽

2020 ◽

Author(s):

Qingxiao Wang ◽

Ziyan An

Keyword(s):

Manufacturing Industry ◽

Stochastic Frontier Analysis ◽

Technology Innovation ◽

Stochastic Frontier ◽

Henan Province ◽

Analysis Method ◽

Two Stage ◽

Frontier Analysis ◽

Equipment Manufacturing ◽

Equipment Manufacturing Industry

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Design and manufacture of the novel drum worm pair

Science Progress ◽

10.1177/0036850420981220 ◽

2020 ◽

Vol 103 (4) ◽

pp. 003685042098122

Author(s):

Jingzi Zhang ◽

Jin’ge Wang ◽

Kai Wang

Keyword(s):

Contact Stresses ◽

Primary Objective ◽

Structure Design ◽

Worm Gear ◽

The Novel ◽

Bending Stress ◽

Manufacturing Method ◽

Design And Manufacture ◽

Maximum Contact ◽

Worm Drive

Although a significant amount of research on robot joint reducer was conducted, there are few systematic investigations on a novel joint reducer adopting inner worm-gear plane enveloping drum worm drive. To satisfy the development of modular robot joint, the primary objective of this paper was to systematically investigate the drum worm drive adopted in the novel joint reducer with integrated structure of drive, transmission, and support in the following aspects: meshing theory, design, analysis, and manufacture. According to the gear meshing theory, mechanical design method, classical mechanics, finite element method, and machining principle of virtual center distance, the systematic investigations around the drum worm pair applied in the novel joint reducer were conducted including the macro and micro meshing theory, structure design, mechanical and contact properties analyses, and manufacturing method. The novel joint reducer’s integrated structure was designed, and the drum worm pair’s mechanical and contact properties analyses were conducted, which showed: (1) the worm’s bending stress and deflection, worm-gear teeth’s shear stress and bending stress as well as the maximum contact stresses were all below their corresponding allowable values; (2) the maximum contact stresses appeared at the engage-in position of the worm pair opposing to the engaging-out position where the largest contact areas appeared. Then the manufacturing of drum worm’s spiral tooth was conducted via the modified 4-axis linkage CNC grinder according to the conjugate motion. Finally the novel joint reducer’s industrial prototype was assembled. The novel joint reducer with integrated structure of drive, transmission and support was designed and manufactured for the first time. The flowchart of design and manufacture of the reducer’s drum worm pair in this process was formulated, which provides a new insight on the research of joint reducers as well as other fields.

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