CN2189506Y

CN2189506Y - Deep-hole compound processing device

Info

Publication number: CN2189506Y
Application number: CN 94209448
Authority: CN
Inventors: 蒋亨顺
Original assignee: BEIJING ELECTRICAL PROCESSING INST
Current assignee: BEIJING ELECTRICAL PROCESSING INST
Priority date: 1994-04-27
Filing date: 1994-04-27
Publication date: 1995-02-15
Anticipated expiration: 2004-04-27

Abstract

The utility model relates to a deep-hole compound processing device, which belongs to an electric processing application field, comprising a direct-current power supply 1, a hollow shaft 5, a tool electrode 6 sheathed on the hollow shaft 5, a motor D2 driving the tool electrode 6, the driving motor D3 of a work piece, a prostrate U-shaped bracket 3, a screw rod 2 driving the bracket 3 and a motor D1. The hollow shaft is arranged between the two arms of the bracket 3, the bracket 3 slides and supports the upper part of the bed body of a machine bed, and the positive and the negative electrodes of the direct-current power supply separately pass through carbon brushes 8 and 9 and connect with the work piece 7 and the tool electrode 6. The utility model not only can conduct the precise compound processing for the work piece of a deep long hole whose long-diameter ratio is over 100, but also can process various-shaped mould cavities.

Description

Deep-hole compound processing device

The utility model relates to a kind of electric machining device of processing deep-hole, belongs to the EDM Technology application.

Along with the development of mechanical industry and aerospace industry, many parts need be made elongated and shape hollow for improving rigidity and weight reduction.Because its endoporus often is the curved surface shape for many steps or with profile, so adopt common machining equipment to be difficult to be competent at; If the simple Electrolyzed Processing that adopts, then forming accuracy can not guarantee.

In view of this, the utility model will provide a kind of deep-hole of processing, the pass precise forming device of especially elongated, middle thick deep-hole, this device has passed through the workpiece of dumming to those endoporus, and the method that can adopt electric machining is carried out semifinishing and fine finishining to the endoporus of workpiece.

The purpose of this utility model be achieved in that a kind of deep-hole complex machining device comprise dc source, hollow shaft, be enclosed within tool-electrode on the said hollow shaft, drive said tool-electrode motor, workpiece drive motors, flat " Jiong " shape support that crouches, drive the leading screw and the motor of said support.Said hollow shaft is contained between two arms of said support, and said support sliding bearing is on the lathe bed of lathe, and the positive and negative electrode of said dc source joins by two carbon brushes and the workpiece and the tool-electrode that are enclosed within said tool-electrode outside respectively.

Below in conjunction with drawings and Examples the utility model is described in detail.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is a transmission schematic diagram of the present utility model.

As shown in FIG., the utility model comprises tool-electrode 6 that dc source 1, hollow shaft 5, moulding use, motor D 2, workpiece drive motors D3, flat " Jiong " shape steel bracket 3 that crouches, the leading screw 2 and the motor D 1 of driving arm 3.The middle part has the hollow shaft 5 of fluid hole and borrows screw thread to strain and be contained between two arms of support 3; Tool-electrode 6 tightly is enclosed within on the hollow shaft 5, and it makes different shapes according to different processing methods, and can do forward and reverse rotation under the driving of motor D 2; The workpiece 7 that drives rotation by motor D 3 is enclosed within the outside of tool-electrode 6 and is bearing on two support rollers 10 that are fixed in bed piece; Support 3 sliding bearings are on the lathe bed of lathe; The positive and negative electrode of dc source 1 joins by carbon brush 8,9 and workpiece 7 and tool-electrode 6 respectively.

During roughing, electrolyte enters machining area via pipeline 4 that communicates with hollow shaft 5 and hollow shaft 5, and motor D 1 makes support 3 relative workpiece 7 do the radial feed motion through leading screw 2 transmissions, stops when workpiece 7 reaches preliminary dimension.Change another group tool-electrode 6 then, inject working media (as kerosene) by pipeline 4 again, repeat above-mentioned action, carry out spark machined.Change the 3rd group of tool-electrode 6 at last and carry out the electrolysis correct grinding, remove the damaged surface layer that forms in the spark machined, make workpiece 7 reach final size.

If tool-electrode 6 is made isometrical cylinder, and workpiece 7 is moved back and forth vertically, then can carry out the accurate Compound Machining of draw ratio above 100 deep and long hole.

If making tool-electrode 6 and workpiece 7 is not to do rotation relatively and relatively move, then can process the workpiece of various irregular cavities.

Owing to adopted support 3 in the utility model, so improved the stressing conditions of tool-electrode 6, making it easier is held firmly, and can under the traction of support 3, carry out radially smoothly moving, rotatablely moving and the axially-movable of workpiece 7 of engagement tool electrode 6 can be finished the accurate Compound Machining of deep and long hole and irregular cavity so again.

Claims

1, a kind of deep-hole complex machining device comprises dc source (1), hollow shaft (5), be enclosed within the tool-electrode (6) on the hollow shaft (5), the motor D 2 of driven tool electrode (6), workpiece drive motors D3, it is characterized in that: it also comprises flat " Jiong " shape support (3) that crouches, drive the leading screw (2) and the motor D 1 of said support (3), said hollow shaft (5) is contained between two arms of said support (3), said support (3) sliding bearing is on the lathe bed of lathe, and said dc source (1) just, negative pole is respectively by carbon brush (8), (9) be enclosed within said tool-electrode (6) outside workpiece (7) and tool-electrode (6) man-hour and join with adding.