Anti-backlash numerical control rotary table and control method thereof
A CNC turntable and turntable technology, which is applied in manufacturing tools, metal processing equipment, metal processing machinery parts, etc., can solve the problems of large thermal deformation error, large turntable error, high positioning accuracy requirements, etc. The effect of the gap
Active Publication Date: 2022-06-03
意特利(滁州)智能数控科技有限公司
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Problems solved by technology
However, it is difficult to guarantee high positioning accuracy requirements by adopting the worm gear transmission scheme, the backlash of the worm gear is relatively large, and the error when the turntable reverses is large
[0004] In order to solve the above-mentioned problems, transmission and anti-backlash worms are often used in related technologies. Specifically, the worm is provided with multi-section worm sleeves in the axial direction, and elastic elements are arranged between each worm sleeves, and a certain gap is set between each worm sleeves. The element realizes the elimination of the gap; however, the above-mentioned anti-backlash worm needs to be adjusted or even replaced after a period of time to ensure the positioning accuracy, and the bearing and turntable parts will produce errors caused by thermal deformation and vibration after working for a long time also larger
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[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments.
[0020] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for the purpose of illustration only and do not represent the only embodiment.
[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood...
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The invention relates to the technical field of machine tool accessories, in particular to an anti-backlash numerical control rotary table and a control method thereof. The inner ring of the outer gear ring bearing is fixed on the rotary table base, and teeth are uniformly distributed on the outer ring of the outer gear ring bearing; the rotary table surface is fixedly connected with the outer ring of the outer gear ring bearing, so that the rotary table surface and the rotary table base can rotate relatively; the two groups of driving mechanisms are meshed with the outer gear ring of the outer gear ring bearing and are used for driving the table top of the rotary table to rotate; according to the driving mechanism, through the arrangement of the dual-driving assemblies in the driving mechanism, one of the dual-driving assemblies provides main driving torque, and the other one of the dual-driving assemblies provides reverse anti-backlash torque, so that the first gear and the second gear are always kept to be tightly attached to the front faces and the back faces of the teeth of the outer gear ring bearing; and the positioning precision of the rotating table board is improved.
Description
technical field [0001] The invention relates to the technical field of machine tool accessories, in particular to an anti-backlash numerical control turntable and a control method thereof. Background technique [0002] The CNC rotary table is widely used in various CNC milling machines, boring machines, various vertical lathes, vertical milling and other machine tools, and can also be used as the fourth axis of the five-axis linkage machining center machine tool. With the high-precision requirements of CNC machine tools and the ability to process complex surfaces, higher requirements have been placed on the positioning accuracy, repeat positioning accuracy and load capacity of the CNC turntable. [0003] In the related art, in order to improve the precision of the numerically controlled turntable, a method is adopted to drive the turntable by means of a high-precision turbine worm drive, and is equipped with a large bearing bearing. However, it is difficult to ensure high p...
Claims
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IPC IPC(8): B23Q1/26B23Q7/02
CPCB23Q1/26B23Q7/02
Inventor 刘士孔孙书旺刘星明郑良泽
Owner 意特利(滁州)智能数控科技有限公司