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Direct driving type dual spindle accurate rotating platform

A direct-drive, precise technology, used in large fixed members, metal processing machinery parts, metal processing equipment, etc., can solve the problems of large friction of the worm gear and worm of the transmission chain, affecting the transmission accuracy, and long transmission path, so as to improve the positioning accuracy. and repeatable positioning accuracy, simple manufacture and installation, and convenient connection adjustment.

Inactive Publication Date: 2009-07-22
三六零安全科技股份有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Traditional CNC turntables are mostly driven by worm gears through servo motors. Worm gear transmission has precision but no power, power but no precision, and the backlash cannot be overcome.
Mainly manifested in: (1) Due to the large gap in the transmission chain and the friction of the worm gear, the wear is relatively large, which greatly affects the rotation speed and transmission accuracy
(2) The transmission efficiency of worm gear is low, and the rotation speed is greatly limited, usually below 3000rpm
(3) There is inevitably a certain gap between the worm gear and the coupling, especially when the forward and reverse rotation is repeated at high frequency, it will have a great influence
(4) Due to the long transmission path of worm gear transmission, elastic deformation will also affect the transmission accuracy

Method used

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  • Direct driving type dual spindle accurate rotating platform
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Examples

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Embodiment

[0016] Example: such as figure 1 As shown, a direct-drive double-axis precision turntable includes an A-axis torque motor 1 , a C-axis frame 4 , a C-axis torque motor 5 , a workbench 6 , and a bearing seat 7 .

[0017] The A-axis torque motor 1 and the bearing block 7 are identical in appearance and structure, and are respectively installed on the machine tool (as on both sides of the gantry column of the gantry frame).

[0018] One side of the C-axis frame 4 is connected to the main shaft 8 of the A-axis torque motor 1 through the expansion sleeve 3 and the connecting flange 2 . For details, please refer to figure 2 , the connecting flange 2 is fixed on the main shaft 8 of the A-axis torque motor 1 by screws, and the connecting flange 2 and the C-axis frame 4 are fixedly connected by an expansion sleeve 3 . According to the same structure and principle, the other side of the C-axis frame 4 is connected to the main shaft of the bearing seat 7 through the expansion sleeve 3 ...

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Abstract

The invention discloses a directly-driven double-shaft precise rotating platform, which comprises an A-shaft moment motor (1) which is connected to a machine tool and a C-shaft frame (4), wherein a main shaft (8) of the A-shaft moment motor (1) can perform A-shaft rotation, and the C-shaft frame (4) is connected to the main shaft (8) of the A-shaft moment motor (1); and the C-shaft frame (4) is provided with a C-shaft moment motor (5), and the main shaft of the C-shaft moment motor (5) is provided with a workbench (6). The main shaft (8) of the A-shaft moment motor (1) is fixedly connected with a connecting flange (2) which is fixedly connected with the C-shaft frame (4) through an expansion bush (3). The directly-driven double-shaft precise rotating platform has the advantages of simple structure, high workbench transmission precision and high speed. A moving shaft of the machine tool has higher dynamic performance, adjusting performance, positioning precision and repeated positioning precision, so that the directly-driven double-shaft precise rotating platform provides the optimal condition for the free curved surface of a machining mold.

Description

technical field [0001] The invention relates to a CNC machine tool turntable, in particular to a direct-drive double-axis precision turntable. Background technique [0002] Traditional CNC turntables are mostly driven by worm gears through servo motors. Worm gear transmission has precision but no power, power but no precision, and backlash cannot be overcome. The main manifestations are: (1) Due to the large gap in the transmission chain and the large friction of the worm gear, the wear is relatively large, which greatly affects the rotation speed and transmission accuracy. (2) The transmission efficiency of the worm gear is low, and the rotation speed is greatly limited, usually below 3000rpm. (3) There is inevitably a certain gap between the worm gear and the coupling, especially when the forward and reverse rotation is repeated at high frequency, it has a great influence. (4) Due to the long transmission path of worm gear transmission, the elastic deformation will also ...

Claims

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Application Information

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IPC IPC(8): B23Q1/25
Inventor 周宏志周明王锐刚余华王康赵万华卢秉恒
Owner 三六零安全科技股份有限公司
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