Locking devices for machine tool shafts
A technology for locking devices and rotating shafts, which is applied in the direction of driving devices, metal processing machinery parts, metal processing equipment, etc., can solve the problems of high difficulty in processing ring-shaped thin-walled elastic elements, and achieve the effects of low cost, avoiding stress concentration, and simplifying the structure
Inactive Publication Date: 2018-03-30
SHENJI GRP KUNMING MACHINE TOOL
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In addition, the processing difficulty of the annular thin-walled elastic element used is high
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[0034] In order to make the purpose, technical solution and advantages of the invention clearer, the invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.
[0035] Such as figure 1 As shown, the CNC machine tool includes a base body 1 and a swing head 2 , and a rotating shaft 3 is disposed inside the base body 1 and associated with the swing head 2 so that the swing head 2 can swing relative to the base body 1 . exist figure 1 In the above, the rotating shaft 3 is covered by the base body 1, so the rotation axi...
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The invention provides a locking device used for a machine tool rotating shaft. A machine tool comprises a rotating shaft and a base body surrounding the rotating shaft; a gap exists between the rotating shaft and the base body; the locking device comprises a locking ring fixedly arranged on the rotating shaft in a sleeving manner and a body arranged in the gap; one side of the body is fixedly connected with the base body, the body is provided with a cavity, at least one portion of the locking ring can be arranged in the cavity, and the face, making contact with the locking ring, of the body is an expansion elastic face; according to configuration of the locking ring and the body, when the expansion elastic face expands, the locking body is locked by the body; and when the expansion elastic face is in the normal state or shrinkage state, the locking ring can freely rotate. According to the locking device, the structure is greatly simplified, the failure rate is reduced, the locking device is distributed around the rotating shaft, and the phenomenon that due to local stress, the rotation precision of the rotating shaft is affected is avoided.
Description
technical field [0001] The invention relates to the field of numerically controlled machine tools, in particular to a locking device for a rotating shaft of a numerically controlled machine tool, and is especially suitable for a locking device for a rotating shaft of a swing head of a five-axis linkage machine tool. Background technique [0002] At present, the key components of the existing five-axis linkage machine tool include the swing head. When working, the rotating shaft of the swing head needs to be locked by a relatively large locking force, so as to ensure that the rotating shaft of the swing head will not rotate due to the cutting force during the cutting process. Therefore, a reliable locking device needs to be provided. [0003] Common braking methods include: using a piston cylinder / air cylinder to lock the rotating shaft of the swing head; adopting a radial embracing method to hydraulically lock the rotating shaft. [0004] The first type of locking device r...
Claims
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IPC IPC(8): B23Q5/20
CPCB23Q5/20
Inventor 赛云祥符朗孙薇徐建平字立敏尹作升王维周星兴黄加良方超李卓曹文钊姚建鹏王亚东
Owner SHENJI GRP KUNMING MACHINE TOOL