CN200939534Y

CN200939534Y - Wire cut electric discharge machine with high/low speed wire feeding

Info

Publication number: CN200939534Y
Application number: CN 200620044828
Authority: CN
Inventors: 杨振步; 杨超翔
Original assignee: SHANGHAI DALIANG PHOTOELECTRIC TECHNOLOGY Co Ltd; SHANGHAI TROOP ELECTRONICS EQUIPMENT CO Ltd
Current assignee: SHANGHAI DALIANG PHOTOELECTRIC TECHNOLOGY Co Ltd; SHANGHAI TROOP ELECTRONICS EQUIPMENT CO Ltd
Priority date: 2006-08-15
Filing date: 2006-08-15
Publication date: 2007-08-29
Anticipated expiration: 2016-08-15

Abstract

The utility model relates to a high/low speed wiring electro discharge machine used to process work piece, which comprises a body with down line sheet, a vertical post with an up line sheet and a carrying-silk apparatus, wherein the carrying-silk apparatus which comprises an isolated base, a pulse power source, a plurality of wire electrode, a plurality of guide rollers and two pairs of tubes used to store silk, wherein: the isolated base is positioned on the body; the anode of the pulse power source is communicated with the wire electrode by the electric carbon block, and the cathode of the pulse power source is connected with the work piece positioned on the isolated base; the guide rollers are separately arranged on the up line sheet and down line sheet to guide and support the electrode silk; and two pairs of tubes are separately arranged on the body and the vertical post. The mono-directional and bidirectional wire-walking are not limited, the flexibility of high speed and low speed is high, the copper (alloy) or molybdenum (alloy) are used as electrode silk, the medium (treatment fluid) can be chosen freely, the application scope for cutting thick and thin components is wide, feasibility for processing non-ferrous metal and ferrous metal. The utility model has the advantages of open processing mode, easy production process, lower cost and practicability.

Description

A kind of WEDM that has the high/low speed wire concurrently

Technical field

The utility model relates to a kind of WEDM, especially refers to have concurrently the WEDM of high/low speed wire.

Background technology

Since Russian scholar B.R.Lazalenko proposed the electric machining theory and adopts this technology, WEDM was widely used in the processing industry of various metals, the mold manufacturing industry that developed rapidly especially afterwards.For the surface of difficult to machine material, complicated shape, ultra-thin and narrow gap, various height and low rigidity elasticity workpiece, part and the special fine and accurate processing knotty problems such as the spare and accessory parts high, that fineness needs in various degree, mould that require, largely must lean on WEDM to solve.WEDM has replaced most of traditional metal working and manual instrument, has been developed and has manufactured not only practical but also accurate toolroom machine.

China's WEDM has lattice of one's own, as shown in Figure 1a, employing molybdenum alloy thread 4 ' as electrode, device is on circular wire storage cylinder 40, adding man-hour can positive and negative two-way rotation, and molybdenum filament is aimed at guide wheel 43 move left and right on the coil holder, allows molybdenum filament reuse (each wrapping wire 100-200 meter), and on lathe fast again for a long time to the discharge of workpiece (negative electrode), produce high heat and explosive force and play cutting function.This Wire EDM is collectively referred to as at present and walks wire cutting machine fast, and it is different from the external WEDM of wire at a slow speed with copper (alloy) silk.

Shown in Fig. 1 b, existing unidirectional at a slow speed wire cutting machine, use copper (alloy) silk 4 and " do electrode; device is on circular wire storage cylinder 40; it is big that the electric current of its use can more above-mentionedly be walked wire cutting machine fast; require also high but add used medium in man-hour (ionized water); in addition; copper wire is that a usefulness promptly can not be reused, the material cost height wants slow so make every effort to transport the speed of silk, so that save the consumption of wire electrode, the effect of processing then can reach than higher precision and fineness, and cutting speed is generally come soon than walking wire cutting machine fast.

Walk molybdenum (alloy) the silk electrode that wire cutting machine adopts fast, pull resistance is strong, is difficult for extending than copper wire, so can reuse.It adds man-hour used medium and generally uses saponification liquor, but work as lubricated, deslagging and cooling usefulness, though composition and concentration have certain requirement, but not high, so processing cost relative much lower in consumptive material aspect especially.

In addition, constantly promote owing to China's manufacturing technology in recent years, the numerical control technique for applying is in line with international standards, the performance of walking wire cutting machine fast satisfies in the big activation of cutting speed, precision and fineness walks the requirement that the silk thread cutting can reach at a slow speed, aspect the cutting of high thickness workpiece, even also go even farther than walking wire cutting machine at a slow speed, very big advantage is possessed in processing cost, procuring equipment expense and staff training always.

But, in the processing of mould manufacturing, metal and manufacturing industry, pursue the feasibility, faster speed, higher precision, best equipment investment repayment and minimum cost of manufacture of its processing, be that the applicant endeavours the content studied all the time.

The utility model content

The purpose of this utility model is to provide a kind of WEDM that has the high/low speed wire concurrently that can select operational mode on demand, and form processing is open to reach, the processing feasibility is high and save cost.

A kind of WEDM provided by the utility model, be used for processing work, it comprises the lathe bed that is provided with down coil holder, the column that is provided with coil holder and fortune silk structure, it is characterized in that: described fortune silk structure is installed between described lathe bed and the column, comprise insulator foot, the pulse power, several guide wheels of wire electrode and two groups of wire storage cylinders, wherein: insulator foot places on the lathe bed; The positive pole of the pulse power and wire electrode are connected by conductive carbon blocks, and negative pole is connected to the workpiece that is placed on the described insulator foot; Guide wheel is placed in respectively on the upper and lower coil holder, and wire electrode is led and supports; And two groups of wire storage cylinders are separately positioned on lathe bed and the column.

In above-mentioned WEDM, also comprise two supports that are used to locate guide wheel that are separately positioned on described workpiece upper and lower.

In above-mentioned WEDM, wire storage cylinder is equipped with the frequency modulation drive unit that can control its speed and the rotation of positive and negative direction respectively.

In above-mentioned WEDM, wire electrode is molybdenum filament, copper wire or welding wire etc.

Owing to adopted above-mentioned technical solution, unidirectional wire of the utility model WEDM or two-way wire are unrestricted, wire travelling speed has bigger elasticity slowly or soon, copper (alloy) silk, molybdenum (alloy) silk or welding wire can be as wire electrodes, medium (working fluid) is leeway selectively, and the application space of thickness work piece cut is big, coloured or do not have a feasibility height of non-ferrous metal processing.The utlity model has form processing open, easy to manufacture, save cost and advantage such as economical and practical.

Description of drawings

By the description of a following embodiment to the utility model WEDM, can further understand the purpose of this utility model, specific structural features and advantage in conjunction with its accompanying drawing.Wherein, accompanying drawing is:

Fig. 1 a is the existing quick two-way wire schematic diagram of WEDM;

Fig. 1 b is the existing unidirectional at a slow speed wire schematic diagram of WEDM;

Fig. 2 a is the structural representation of the utility model WEDM;

Fig. 2 b is the utility model WEDM fortune silk structural representation;

Fig. 3 be the utility model WEDM fortune silk structure at work workpiece be positioned over X and Y and movably make the schematic diagram that X, Y-axis motion cut up and down on two blocks of plankers.

The specific embodiment

Overall thought of the present utility model is: utilize the applicant to be the lathe that ZL200400020295.0 provided in the patent No., by architecture advances, form processing is open to reach, the processing feasibility is high and save cost.

Shown in Fig. 2 a～b, the utility model WEDM comprises the lathe bed 10 that is provided with down coil holder, the column 20 that is provided with coil holder, fortune silk structure and the control system that possesses programming and cutting control function of computer is housed, is used for processing work 2.

Fortune silk structure comprises insulator foot 1, the pulse power 3, molybdenum filament or copper wire 4, some guide wheels 5, support 6 and

wire storage cylinder

41,42, wherein:

Insulator foot 1 places between the lathe bed 10 and workpiece 2 of WEDM, and pulse power supply 3 only forms the loop at molybdenum (or copper) silk 4 and workpiece 2 during as discharge processing, does not constitute any acceptor with lathe bed.

What as shown in Figure 3, workpiece (machined object) 2 generally was positioned over lathe bed prolongs X-axis and Y direction movably up and down on two blocks of plankers.

Shown in Fig. 2 b, the positive pole of the pulse power 3 and molybdenum (copper) silk 4 is connected by conductive carbon blocks, and negative pole then directly is communicated on the workpiece 2, must insulate with lathe bed 10 in whole loop.

Electrode when molybdenum filament or copper wire 4 still cut as discharge.

Guide wheel 5 places respectively on the upper and lower coil holder and uses with support as molybdenum filament or copper wire 4 guiding.

Support 6 is arranged at the upper and lower of workpiece, by guide wheel supported molybdenum or copper wire, and relative X and the Y-motion done with workpiece during cutting.

Wire storage cylinder

41,42 installs frequency modulation respectively and drives, adjustable speed and rotating, when wire storage cylinder 41 is just relaying thread, 42 of wire storage cylinders are that wrapping wire and tight silk usefulness are done in counter-rotating, otherwise the action of wire storage cylinder 41 and wire storage cylinder 42 is then opposite during commutation, so can with wire storage cylinder around molybdenum filament or copper wire do that unidirected discharge uses or two-way repeated use, at every turn, the speed and the time of certain direction wire are set in controller, the fineness that looking workpiece needs is programmed with precision, can reach the purpose of production costs such as saving wire electrode, power supply.

Copper wire is good with the strong welding wire of pull resistance, reduces use cost like this.

The speed of fortune silk can be designed as the per minute number meter to tens of meters, even as the linear velocity of wire is fast equally fast.The time of forward and reverse fortune silk also can be set arbitrarily and be adjusted, be longer than reversed time based on the forward time in theory, so then can on each segment electrode silk, select repeatedly to use or the single use, precision, fineness, process velocity or economic aim according to desired machined object are decided, after the copper of every volume or molybdenum electrode silk had used, because wrapping wire and putting in order can also stay again, use when cutting as roughing.

Therefore, the utility model WEDM not only has all advantages of having of wire cutting machine at a slow speed, also have the low cost of walking wire cutting machine fast, easy to operate, all advantages of less wastage, in addition can also save wrapping wire, wear silk, the most formidable operating procedure such as tight silk.The utility model WEDM work in-process can be water spray, immersion is dual-purpose, manually, automatic wire feed has both pattern, is kind to embody high precision, best bright finish, high efficiency, open, energy-saving WEDM cheaply fully.

Though the utility model WEDM is described with reference to current instantiation, but those skilled in the art should be realized that, above example only is to be used for illustrating the utility model, also can make the variation and the modification of various equivalences under the situation that does not break away from the utility model spirit.Therefore, if in connotation scope of the present utility model to the variation of above-mentioned example, modification all will drop in the scope of claims of the present utility model.

Claims

1. a WEDM that has the high/low speed wire concurrently is used for processing work (2), and it comprises the lathe bed (10) that is provided with down coil holder, the column (20) that is provided with coil holder and fortune silk structure, it is characterized in that:

Described fortune silk structure is installed between described lathe bed (10) and the column (20), comprises insulator foot (1), the pulse power (3), wire electrode (4), several guide wheels (5) and two groups of wire storage cylinders (41), (42), wherein:

Insulator foot (1) places on the lathe bed (10);

The positive pole of the pulse power (3) and wire electrode (4) are connected by conductive carbon blocks (7), and negative pole is connected to the workpiece (2) that is placed on the described insulator foot (1);

Guide wheel (5) is placed in respectively on the upper and lower coil holder, and wire electrode (4) is led and supports; And

Two groups of wire storage cylinders (41,42) are separately positioned on lathe bed (10) and the column (20).

2. WEDM according to claim 1 is characterized in that: it also comprises two supports that are used to locate guide wheel (5) (6) that are separately positioned on described workpiece upper and lower.

3. WEDM according to claim 1 and 2 is characterized in that: described two groups of wire storage cylinders (41,42) are equipped with the frequency modulation drive unit that can control its speed and the rotation of positive and negative direction respectively.

4. WEDM according to claim 1 is characterized in that: described wire electrode (4) is a molybdenum filament.

5. WEDM according to claim 1 is characterized in that: described wire electrode (4) is a copper wire.

6. WEDM according to claim 1 is characterized in that: described wire electrode (4) is a welding wire.