Numerical-control electrolytic machining method for closed curve groove in inner wall of tubular workpiece and clamping tool for numerical-control electrolytic machining method
A closed curve and processing method technology, applied in electric machining equipment, electrochemical machining equipment, manufacturing tools, etc., can solve problems such as difficult machining, and achieve good surface quality, high processing efficiency, and good process adaptability.
Active Publication Date: 2015-03-25
NO 59 RES INST OF CHINA ORDNANCE IND
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Problems solved by technology
[0009] The purpose of the present invention is to solve the problem that the closed curved groove on the inner wall of the tubular workpiece is difficult to machine, and propose an electrolytic machining method with low cost, high dimensional accuracy and surface quality, and easy operation
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Embodiment 1
[0043] Example 1, a numerically controlled electrolytic machining method for closed curved grooves on the inner wall of a tubular workpiece, its electrolytic machining process can be found in figure 1 ,Specific steps are as follows:
[0044] a. Preparation of electrolyte: The composition of the electrolyte is 1 part of 100g / L NaCl+1 part of 100g / L NaNO3, and the solvent is tap water.
[0045] b. Machining the initial lower hole: machine the lower hole at the starting position of the curved groove by EDM. The diameter of the lower hole is the same as the width of the curved groove, and the depth is the same as the depth of the curved groove. The lower hole is used as The starting point of electrolytic machining.
[0046] c. Clamp and position the tubular workpiece:
[0047] further reference image 3 : the non-working surface of the combined cathode 15 is installed on the cathode rod 4 to form the cathode system 19, and the cathode system 19 is installed in the waist-shaped ...
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The invention relates to a numerical-control electrolytic machining method for a closed curve groove in the inner wall of a tubular workpiece and a clamping tool for the numerical-control electrolytic machining method. According to the numerical-control electrolytic machining method for the closed curve groove in the inner wall of the tubular workpiece, movement of an axial movement system and an around-axis movement system is controlled according to a numerical-control track program, so that the tubular workpiece is made to move axially and rotate according to the numerical-control track program, and a track of the curve groove is formed through the movement, relative to the tubular workpiece, of a combined cathode. The clamping tool comprises the combined cathode, a cathode rod, a guide body and a liquid outlet base, wherein the middle section of the cathode rod is arranged in the guide body provided with a kidney-shaped hole, the guide body is fixedly connected to one end of the tubular workpiece, and the other end of the tubular workpiece is fixedly connected to the liquid outlet base. According to the numerical-control electrolytic machining method for the closed curve groove in the inner wall of the tubular workpiece and the clamping tool for the numerical-control electrolytic machining method, milling is replaced by electrolytic machining, machining of the closed curve groove in the inner wall of the integral tubular workpiece can be achieved, limitation of the hardness of machined materials is avoided, machining residual stress can not be generated, machining efficiency is high, and surface quality is high.
Description
technical field [0001] The invention relates to an electrolytic machining method for a tubular workpiece and a clamping fixture thereof, in particular to an electrolytic machining method for a closed curved groove on the inner wall of a tubular workpiece and a clamping fixture thereof, belonging to the field of electrolytic machining. Background technique [0002] On the inner wall of some special workpieces, there is an annular closed curved groove, which is a curved surface on the inner wall. In order to facilitate machining of this type of workpiece, the traditional method is to adopt a two-half split structure, that is, milling separately and then connecting them into a whole by bolts. However, the split workpiece has a complex structure and a large weight, and it will cause the problem that the connection strength and rigidity between the connecting parts are weakened. Therefore, in order to simplify the structure, reduce the weight and ensure the strength, it is prefe...
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IPC IPC(8): B23H3/00B23H9/00B23H11/00
CPCB23H3/00B23H9/00B23H11/00B23H11/003
Inventor 李立张隆平李忠盛陈汉宾易同斌吴道勋张昭林彭菲菲张帷
Owner NO 59 RES INST OF CHINA ORDNANCE IND