Processing method of surface of large-scale hollow ball casting
A technology of surface processing and casting, which is applied in the field of surface processing of large hollow spherical castings. It can solve the problems of turning processing interference of air holes and sand holes, overtravel in the X direction of CNC lathes, and inability to process spherical surfaces at one time.
Inactive Publication Date: 2012-07-18
SHENYANG AIRCRAFT CORP
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Problems solved by technology
[0002] The existing workpiece is a spherical hollow structure, the material is cast aluminum ZL101, and the diameter of the outer wall of the ball is 300mm. It is difficult to locate and align this workpiece, and the X direction of the CNC lathe is overtraveled, so it is impossible to process the entire spherical surface at one time. In addition, the air holes on the surface of the casting and Sand holes also interfere with turning operations
[0003] The usual processing method is: in terms of casting processing, the casting air holes and sand outlet holes are arranged at both ends of the process table axis, the air holes are sealed with aluminum welding after the casting is completed, and after the spherical surface processing is completed, there are defects in the sealing welding place; at the same time, along the A craft table is arranged on one side of the axis of the ball center, and the tool can only be turned in one direction; and because the tool protrudes too long, the X-direction of the lathe is overtraveled, and the entire spherical surface cannot be processed at one time.
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[0011] Such as figure 1 Shown, a kind of large-scale hollow spherical casting surface processing method is characterized in that comprising the following steps:
[0012] 1) Casting treatment: Casting air holes 2 and sand outlet holes 3 are set on both sides of the process table axis in the vertical direction. After rough turning the spherical surface, use a boring machine to fine-machine the two holes, and then press into the process plug 4 with interference fit and fill it with aluminum welding;
[0013] 2) Hollow ball processing: Arrange a process clamping table 1 on both sides along the center axis of the ball, turn one end of the hemisphere first, and then turn around and turn the other end of the hemisphere according to the end face and outer circle of the process clamping table 1.
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Abstract
The invention relates to a processing method of a surface of a large-scale hollow ball casting. The method comprises the steps of: 1) processing the casting, by arranging an air hole and a clearance hole of the casting component at two sides along the vertical direction of an axis of a process platform; roughly lathing the surface of the ball; finely processing two holes via a boring machine; pressing a technical plug by interference fit, and leveling by aluminum soldering; and 2) processing the hollow ball, by arranging a technical clamping holder at each side along the axis of the ball core; lathing the half ball at one end; aligning and positioning based on the end of the technical clamping holder and the external circle, and then turning to lathe the half ball at the other end. The processing method is simple in steps, avoids special tools, and can be accomplished by combination of the numerically controlled lathe and the common boring machine and simple operation. The processed part gains high precision and nice appearance.
Description
technical field [0001] The invention relates to a method for processing the surface of a large hollow ball casting, which belongs to the field of mechanical processing. Background technique [0002] The existing workpiece is a spherical hollow structure, the material is cast aluminum ZL101, and the diameter of the outer wall of the ball is 300mm. It is difficult to locate and align this workpiece, and the X direction of the CNC lathe is overtraveled, so it is impossible to process the entire spherical surface at one time. In addition, the air holes on the surface of the casting and Sand holes also interfere with turning operations. [0003] The usual processing method is: in terms of casting processing, the casting air holes and sand outlet holes are arranged at both ends of the process table axis, the air holes are sealed with aluminum welding after the casting is completed, and after the spherical surface processing is completed, there are defects in the sealing welding pl...
Claims
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IPC IPC(8): B23P15/00
Inventor 孙飞张正兴毕永明
Owner SHENYANG AIRCRAFT CORP