Drilling and milling device for adjustment sheet type part

Abstract

The invention discloses a drilling and milling device for an adjustment sheet type part. The drilling and milling device comprises a clamp body, centering screws and centering press plates. The clamp body is provided with screw mounting grooves, and press block mounting grooves are formed in the clamp body and located at the two ends of each screw mounting groove. The centering screws are mounted in the screw mounting grooves, the two ends of each centering screw are sleeved with the corresponding centering press plates which are arranged in the press block mounting grooves, and supporting blocks are further arranged on the clamp body and located outside the screw mounting grooves. By the adoption of the clamp body, when the adjustment sheet type part is clamped, except four supporting points and four pressing points opposite to the supporting points of the part, other thin walls are all in a non-stressed state, and part deformation caused by clamping can be greatly reduced; drilling and lug milling are completed through one-time clamping, and clamping errors are greatly reduced; and the center distance size can be guaranteed during drilling and reaming, and the device can be used for the lug milling procedure, so that clamp manufacturing and managing cost is saved, workers can conveniently use the device for machining on site, and the part machining cycle is shortened.

Description

technical field [0001] The invention belongs to the technical field of machining of aero-engine adjusting piece parts, and in particular relates to a drilling and milling device for adjusting piece parts. Background technique [0002] In aero-engines, regulator parts are widely used in the expansion nozzle of the engine. Regulator parts are thin-walled parts with a special structure. Such as figure 1 As shown, the structure of the part is a thin-walled plane part. There are many ribs 2 on the bottom plate 1 to increase the strength. There are two main ribs 3 on the bottom plate 1. There are 4 holes on the main rib 3 for assembly. Two pins. Since the adjusting piece often needs to be opened and closed when the nozzle is retracted and expanded, there is a higher requirement for the hole distance from the bottom plate 1 of the adjusting piece to the mounting pin shaft. If the hole distance is small, it will hinder the opening of the regulating piece. Adjustability of the sp...

AI Technical Summary

Problems solved by technology

Since the adjusting piece often needs to be opened and closed when the nozzle is retracted and expanded, there is a higher requirement for the hole distance from the bottom plate 1 of the adjusting piece to the mounting pin shaft. If the hole distance is small, it will hinder the opening of the regulating piece. Adjustability of the spout

Therefore, in the processing of adjusting piece parts, it is necessary to carry out processes such as drilling and reaming, milling lugs, etc. However, as a clamping method for drilling and reaming and milling lugs for adjusting piece parts, it is generally performed on a set of milling fixtures first. Carry out milling lugs, and then drill and ream holes on the drilling and reaming jig, but as the processing of adjusting piece parts, it not only needs to ensure the size of the holes at the lugs from the bottom plate, but also the depth of the milling lugs (dimensions from the center of the hole), therefore, it is difficult to ensure the processing size with multiple clamping methods; especially the clamping deformation of thin-walled parts makes the processing of the distance from the bottom plate to the center of the hole unstable, which in turn affects the product performance, and the processing cycle is long and labor-intensive

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