General clamp for abrasive flow polishing of complicated hole surface

[0014] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0015] Examples of the present invention figure 1 , figure 2 , image 3 , Figure 4 As shown, this embodiment includes a clamp body, an embedded module, and bolts 13; the clamp body includes a lower guide sleeve 1, an upper guide sleeve 2, a lower pressure plate 3, a sleeve 4, an upper pressure plate 5, a sealing ring 6, and a bolt 7. , nut 8; the upper pressure plate 5 has a built-in module connection hole 5a, and the abrasive flow channel hole 5b distributed in the circumferential radial direction; the upper pressure plate 5 abrasive flow channel hole 5b is axially parallel to the polished surface of the polished workpiece 14; The sleeve 2, the upper pressure plate 5 and the sleeve 4 are tightly connected; the sealing ring 6 is installed between the joint surface between the lower guide sleeve 1 and the lower pressure plate 3, the lower guide sleeve 1 and the lower pressure plate 3 are tightly connected, and the lower pressure plate 3 Connected with the sleeve 4; the lower guide sleeve 1 and the upper guide sleeve 2 have circumferentially evenly distributed threaded holes for installation and fixation on different machine tools; the embedded module is installed in the fixture body; the embedded module and the upper pressure plate 5 It is fastened and connected by bolts 13; the clamp body positions and clamps the processed parts, guides the abrasive to reciprocate through the surface to be processed, and seals the flow channel; the embedded module has a circulation gap for the abrasive flow; the abrasive flow passes through the abrasive on the embedded module. The flow gap of the flow flows into the processing area in the fixture; when the abrasive particles flow into the fixture, the lower guide sleeve 1 and the upper guide sleeve 2 prevent the macro-flare phenomenon at the entrance due to elastic turbulence and the uneven flow rate will affect the polishing accuracy, making The elastic turbulence of the abrasive is completed in the guide sleeve, so when the abrasive passes through the corresponding channel to polish the workpiece, the flow of the abrasive is continuously stable, ensuring the stability of the polishing process.

[0016] The number of embedded modules is 4; when the polishing surface of the polished workpiece 14 is a tooth surface, the first embedded module includes a positioning mandrel 9, a compression nut 10, a compression knob 11, and a gasket 12; the polished workpiece 14 is installed by gears On the positioning mandrel 9 , the washer 12 is installed between the workpiece gear and the compression nut 10 , the compression knob 11 is above the compression nut 10 , and the compression knob 11 presses the compression nut 10 and is fastened to the positioning mandrel 9 On; the gear end surface of the workpiece 14 to be polished is pressed and covered by the center of the upper pressure plate 5, and the abrasive flow is circulated in the abrasive flow channel hole 5b where the end surface of the workpiece gear 14 is not pressed and covered by the upper pressure plate 5, so as to realize the gear tooth surface of the polished workpiece 14 polishing.

[0017] When the polishing surface of the workpiece to be polished is a cylindrical surface, the second embedded module presses the end face of the polished workpiece, the embedded module is fastened and installed on the upper pressure plate 5, the end surface of the workpiece is pressed and covers the center of the upper pressure plate 5, and the abrasive flows on the upper plate 5. The pressing plate 5 is not pressed by the end face of the workpiece and circulates through the abrasive flow channel hole 5b at the covered place, so as to realize the cylindrical polishing of the polished workpiece.

[0018] When the polishing surface of the workpiece to be polished is a hole, the third embedded module presses the end face of the polished workpiece, the embedded module is fastened and installed on the upper pressing plate 5, the end face of the workpiece is pressed and covers the center of the upper pressing plate 5, and the abrasive flows on the upper pressing plate. 5. The abrasive flow channel hole 5b at the place not pressed by the end face of the workpiece and covered is circulated, so as to realize the polishing of the polished workpiece hole.

[0019] When the outer contour of the polished workpiece is not polished and the polishing surface is a hole, the inner contour of the fourth embedded module is the same as the unpolished outer contour of the polished workpiece, and the inner contour of the fourth embedded module is in close contact with the unpolished outer contour of the polished workpiece. Tighten and cover the non-polishing surface of the polished workpiece to avoid polishing to the surface of the workpiece that does not need to be processed; the fourth embedded module presses the end face of the polished workpiece, the embedded module is firmly installed on the upper pressure plate 5, and the end face of the workpiece is pressed tightly In addition to covering the center of the upper platen 5, the abrasive flow flows through the abrasive flow channel hole 5b where the upper platen 5 is not pressed by the end face of the workpiece and is covered, so as to realize the polishing of the polished workpiece hole.

[0020] To achieve positioning and installation of different shapes and types of polished parts, it is only necessary to design the surface shape of the corresponding embedded module coupled with the surface of the polished part, replace and recombine the embedded modules, and then process different types of artifact.