Vertical external broaching machine for broaching inner mortise of annular workpiece and broaching method

Abstract

The invention relates to a vertical external broaching machine for broaching an inner mortise of an annular workpiece. The vertical external broaching machine comprises a base, a broaching workbench and a lathe bed; the broaching workbench is used for containing the annular workpiece to be broached; the lathe bed is provided with a slide carriage capable of moving up and down, and the slide carriage is provided with a cutter; the broaching workbench comprises a fixed base, an arc-shaped sliding seat, a first driving mechanism and a first locking mechanism, wherein the fixed base is provided with an arc-shaped notch, the inner wall face of the arc-shaped notch is a cylindrical face with a C-shaped cross section and an upward opening, and the inner wall of the arc-shaped notch is provided with a first sliding rail with a bending direction consistent with that of the arc-shaped notch; the arc-shaped sliding seat is connected to the first sliding rail of the fixed base in a sliding manner; the power acting end of the first driving mechanism is connected with the arc-shaped sliding seat, so that the arc-shaped sliding seat can be driven to slide back and forth along the first sliding rail; and the first locking mechanism is arranged between the fixed base and the arc-shaped sliding seat and used for locking the arc-shaped sliding seat and the fixed base together when the arc-shaped sliding seat slides to any angle position along the first sliding rail. The invention further relates to a broaching method applying the vertical external broaching machine.

Description

Technical field[0001]The present invention relates to the field of tellers, and more particularly to a vertical tale bed and a pulverization method for pulling the inner groove of the annular workpiece.Background technique[0002]Air parts such as tray workpieces (such as worm rouks) or some annular thin-walled workpieces have special requirements such as high temperature, corrosion resistance, and parts materials are also made of stainless steel (2Cr13), titanium alloy, high temperature nickel-based alloy. Processing materials. The inner groove of the annular thin-walled workpiece on the aircraft engine generally uses traditional processes such as plugging, planing, and milling, while the cutting, planing and milling are single-teeth single-blade cutting, and the tool is easily worn. The tool loss is large, and the workpiece has a frequent impact force. The workpiece toughness is high, which causes low levels of workpieces.[0003]According to the characteristics of the ring thin-walle...

AI Technical Summary

Problems solved by technology

The internal mortise and groove of annular thin-walled workpieces on aircraft engines are generally processed by traditional techniques such as slotting, planing and milling. However, slotting, planing and milling are single-tooth and single-edge cutting, and the tools are easy to wear. The loss of the tool is large, and there are frequent impacts on the workpiece, and the toughness of the workpiece is very strong, which results in a low pass rate of the workpiece

[0003] According to the characteristics of circular thin-walled workpieces, it is not suitable to use an internal broaching machine to broach the internal tenon groove of the workpiece, because the tools used for internal broaching are generally integral broaches, and the shape of the broaching hole will be relatively single, which is not suitable for broaching. Suitable for complex dovetail grooves, pine grooves and other complex internal tenon and groove processing

However, if an ordinary external broaching machine is used, although the tool is a combined broach, some workpieces have inclination angles and cone angles in the inner tenon grooves, and the inclination angles and cone angles of different specifications of workpieces are different. The internal mortise and groove workpieces cannot meet the requirements

[0004] Because the annular thin-walled workpiece itself is difficult to process, if the annular thin-walled workpiece cannot be effectively clamped, and is directly subjected to the high-speed impact of the broach, the annular thin-walled workpiece is easily deformed, resulting in a high rejection rate of the workpiece; secondly , the broaching tool directly broaches the annular thin-walled workpiece, which also causes high tool wear and greatly reduces the service life of the tool; moreover, for the broaching of the above-mentioned annular thin-walled workpiece, especially in high-speed broaching During the cutting process, many burrs are easily generated on the two end faces of the ring-shaped workpiece, which requires subsequent manual deburring, which takes up a lot of labor costs

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