An electrolytically machined cathode for a ball nut raceway
A ball nut and cathode technology, applied in the direction of machining electrodes, electric machining equipment, electrode manufacturing, etc., can solve the problems of unstable ball nut raceway machining process, avoid defects such as flow lines, and improve stability.
Inactive Publication Date: 2018-11-02
GUANGDONG UNIV OF TECH
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Problems solved by technology
[0007] In view of this, the purpose of the present invention is to provide a kind of electrolytic machining cathode of ball nut raceway, the structural design of the electrolytic machining cathode of this ball nut raceway can effectively solve the problem of electrolytic machining of ball nut raceway with helix angle less than 40°. The problem of unstable processing
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[0031] The embodiment of the invention discloses an electrolytic machining cathode of a ball nut raceway, so as to improve the stability of the machining process of the ball nut raceway with an electrolytic machining helix angle less than 40°.
[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0033] see Figure 1-Figure 5 , figure 1 It is a structural schematic diagram of the electrolytic machining cathode of the ball nut raceway of a specific embodiment of the present invention; figure 2 for figure 1 S...
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The invention discloses an electrolytic machining cathode of a ball nut roller path. The electrolytic machining cathode comprises a cathode head and a spring pressing plate assembly. The cathode head is provided with a nozzle. The nozzle communicates with a liquid inlet pipe. The angle between the nozzle and the axis of the cathode head is a preset acute angle. The spring pressing plate assembly comprises a sealing pressing plate and a fixing plate which are arranged oppositely. A compression spring is connected between the sealing pressing plate and the fixing plate. The cathode head is located on the side, away from the fixing plate, of the sealing pressing plate and is parallel to the sealing pressing plate. By applying the electrolytic machining cathode, precompression of the compression spring acts on the sealing pressing plate to seal a ball nut so that a closed space can be formed, working liquid is pumped in through a liquid inlet pipe under a certain liquid pressure, and the acting force of the compression spring to the pressing plate is higher than force of the liquid to the pressing plate, so that the backpressure at a machining gap outlet is formed through pressure of the working liquid, liquid flows in a convergent mode through the liquid backpressure, defects of flow lines and the like are effectively overcome, and the stability of the machining process is improved at the same time.
Description
technical field [0001] The invention relates to the technical field of numerical control electrolysis generating machining, and more specifically relates to an electrolytic machining cathode of a ball nut raceway. Background technique [0002] The ball nut is the key component of the ball screw pair, which is widely used in industrial fields such as machine tools and industrial robots. At present, the processing methods of the ball nut raceway mainly include turning-grinding method, hard turning enveloping method and other methods. [0003] However, the interference between the grinding wheel rod and the inner wall of the nut is unavoidable when turning and grinding the ball nut raceway with a large lead, which limits the processing of the ball nut raceway with a larger lead. The hard turning envelope method has extremely high requirements on the processing machine tool. The motion control system composed of linear motor drive, hydrostatic guide rail and grating closed-loop...
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IPC IPC(8): B23H3/04
CPCB23H3/04
Inventor 刘桂贤黄榕张永俊张传运程伟建
Owner GUANGDONG UNIV OF TECH