Large precise numerical control rotating table

A rotary table and precision numerical control technology, applied in the direction of large fixed members, manufacturing tools, metal processing equipment, etc., can solve the problems of workpiece eccentricity limitation, inability to withstand large impact force, and inability to cope with cutting processing requirements, etc., to prolong the service life , Improve the effect of transmission stability

Inactive Publication Date: 2011-04-27
TIANJIN NO 1 MACHINE TOOL WORKS
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the large-scale CNC rotary table cannot cope with various complex cutting due to insufficient rotary positioning accuracy, difficulty in meeting the accuracy requirements for the end jump of the table top of the rotary table, limited eccentricity of the wor

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[0016] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples, and detailed descriptions are as follows with accompanying drawings:

[0017] See Figure 1-Figure 3 , Large precision CNC rotary table, including table base 5 and table spindle 1, worm and worm wheels installed on both sides of the table base, reducer and servo motor connected with the inner worm on one side of the table base. The outer ring of the YRT three-row cylindrical roller bearing 4 is installed on the base of the table, and the table spindle is installed on the inner ring of the YRT three-row cylindrical roller bearing 4, and the table spindle can rotate. The main drive servo motor 7 is connected to the main drive reducer 8, the output end of the main drive reducer is connected to the main drive coupling 10, the main drive reducer is connected to the base of the workbench through the reducer adjustment pad 9, and the main dri...

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Abstract

The invention relates to a large precise numerical control rotating table. The large precise numerical control rotating table comprises a table base, a table spindle, worms and worm gears which are mounted in both sides of the table base and a reducer and a servo motor which are connected with the worm in one side of the table base. The large precise numerical control rotating table is characterized in that the worm in the other side of the table base is connected with the reducer and the servo motor by a coupling so as to form a driven worm gear pair for providing a resistance moment for the table base; and the outer circumference of the table base is provided with a plurality of static pressure support pads, a clearance is left between the lower end surface of the table spindle and the static pressure support pads, three rows of cylindrical roller rotating table bearings are mounted between the table spindle and the table base, and the inner rings of the three rows of cylindrical roller rotating table bearings are provided with steel scales. The invention solves the problems that the rotary positioning accuracy is low, the table runout of the rotating table can not meet the accuracy requirements, the supported workpiece can not bear a large impact force as a result of restricted eccentric center and the like. Besides, the invention greatly improves the transmission smoothness of the rotating table and prolongs the service life of the bearing.

Description

technical field [0001] The invention belongs to the field of machine tool manufacturing, in particular to a large-scale precision numerical control rotary workbench. Background technique [0002] The CNC rotary table is the core component of various machine tools such as vertical lathes, milling machines, machining centers, and CNC gear shaping machines. Production processing capacity and efficiency. The current application status of large CNC rotary table is not ideal. [0003] At present, the driving method of large CNC rotary table is mainly servo motor. The transmission mode of the large CNC rotary table includes worm gear transmission and gear transmission. Practice has proved that worm gear transmission can provide high transmission accuracy and high transmission stability, but affected by various uncertain factors such as machining, assembly and debugging, the worm gear transmission process of large CNC rotary table is inevitable There is a transmission gap, which...

Claims

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Application Information

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IPC IPC(8): B23Q1/25B23Q5/34
Inventor 刘福聪吴文仲袁自强王秀梅任顺坤王景召李宏辉
Owner TIANJIN NO 1 MACHINE TOOL WORKS
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