Inner wall machining structure and outer wall machining structure for thin-wall slender pipe fitting

Abstract

The invention discloses an inner wall machining structure for a thin-wall slender pipe fitting. The inner wall machining structure is characterized by comprising an outer clamp body, an outer elasticclamping head, an outer guide pull head and a screw cap, wherein the outer clamp body, the outer elastic clamping head and the outer guide pull head are of tubular structures, inner holes of the outerclamp body and the outer guide pull head are both conical, the middle of the outer elastic clamping head protrudes outwards, the middle diameter of the outer elastic clamping head is larger than thediameter of the two ends of the outer elastic clamping head, and a plurality of outer expansion joints are formed in the side wall of the outer elastic clamping head; and the outer elastic clamp headis sleeved with the the large-diameter ends of the outer clamp body and the outer guide pull head from the two ends of the outer elastic clamp head. When the inner wall of the pipe fitting is machined, the inner wall machining structure is arranged on the outer side of the pipe fitting in a sleeving mode, a three-jaw chuck of a machine tool is clamped on the outer clamp body, the inner wall of thepipe fitting is straightened, the inner wall of a part is machined to the designated size through a turning tool, the three-jaw chuck is not in direct contact with the pipe fitting, the part is prevented from being clamped and damaged, and the machining size and the surface precision of the inner wall of the pipe fitting are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of processing thin-walled parts, and in particular relates to an inner wall processing structure and an outer wall processing structure of a thin-walled elongated pipe. Background technique [0002] In the process of processing thin-walled and slender pipe fittings with small wall thickness (wall thickness between 0.5mm and 2mm) and large length (length above 200mm), the clamping of the parts is usually directly clamped by the three jaws of the lathe. One end, and then process the thin-walled and slender pipe fittings, but the following problems will occur: ①The clamping force of the three-jaw chuck of the lathe is easy to deform the part clamp; ②Due to the long part, the lathe spindle is running at high speed. The tail end of the part will shake. In this case, cutting with a turning tool cannot effectively process the part to the specified size and surface accuracy. [0003] In order to prevent the parts f...

AI Technical Summary

Problems solved by technology

[0002] In the process of processing thin-walled and slender pipe fittings with small wall thickness (wall thickness between 0.5mm and 2mm) and large length (length above 200mm), the clamping of the parts is usually directly clamped by the three jaws of the lathe. One end, and then process the thin-walled and slender pipe fittings, but the following problems will occur: ①The clamping force of the three-jaw chuck of the lathe is easy to deform the part clamp; ②Due to the long part, the lathe spindle is running at high speed. The end of the part will shake. In this case, cutting with a turning tool cannot effectively process the part to the specified size and surface accuracy.

[0003] In order to prevent the parts from shaking, the thimble of the tailstock of the lathe is usually used to support the parts, but practice shows that the parts processed in this way will also have some deviations in the size of the middle area of ​​the parts. After installing the middle bracket, although The processing size and surface accuracy of the slender pipe are slightly improved, but the processing size and surface accuracy still cannot meet the requirements, and this method is troublesome and inefficient when clamping parts

Images