CN217596106U - Slow wire-moving electrospark wire-electrode cutting/electrospark perforation processing integrated machine tool - Google Patents

Abstract

The utility model discloses a walk a spark-erosion wire cutting/spark-erosion perforation processing integration lathe slowly belongs to and walks a spark-erosion wire cutting and contour machining field slowly, include: a wire winding drum part for winding and storing the electrode wire; a wire feeding portion including a wire feeding hose part through which the wire electrode extended from the wire winding drum part passes and a wire feeding guide wheel part; the wire electrode is wound on the driving wheel and the driven wheel, extends to a cutting area and then is recovered to the wire winding barrel part through the wire collecting gear part; the driving wheel is connected with the hysteresis brake to provide constant tension for the wire electrode. The integrated machine tool has the advantages of being simple, small in occupied space, convenient to operate, wide in operation range, high in machining efficiency and high in integration degree.

Description

Slow wire-moving electrospark wire-electrode cutting/electrospark perforation processing integrated machine tool

Technical Field

The utility model belongs to walk a spark-erosion wire cutting and contour machining field slowly, concretely relates to walk a spark-erosion wire cutting/spark-erosion perforation processing integration lathe slowly.

Background

The statements herein merely provide background related to the present disclosure and may not necessarily constitute prior art.

The slow wire-moving electric spark wire-electrode cutting machine tool uses continuous one-way moving electrode wire as tool electrode, under the action of pulse power supply the spark discharge formed between the tool electrode and workpiece can produce lots of heat to make the surface of workpiece be molten and even vaporized so as to attain the goal of cutting and machining.

The wire cut electric discharge machine is divided into two types, namely a fast wire cut electrical discharge machine and a slow wire cut electrical discharge machine, most of the fast wire cut electrical discharge machines have low precision and low surface roughness; although the machining quality of the slow-walking wire cutting machine tool is good in the current stage, most of the slow-walking wire cutting machine tools are expensive, large in occupied area, inconvenient to move and low in cost performance, and the cost performance is not high for small and medium-sized enterprises without batch machining requirements. The requirements of slow-moving wire cutting on the tension of the electrode wire are high, many machine tools cannot treat the tension of the electrode wire in place, the problems of wire breakage, bending of the electrode wire and the like easily occur in the machining process, and the machining quality is seriously influenced. The conventional slow-running wire cutting machine tool can only complete the wire cutting function, and the machine tool needs to be replaced or other people need to be entrusted for punching, so that the cost and the efficiency of production and processing are greatly influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a not enough to prior art exists, the utility model aims at providing a walk a spark-erosion wire cutting/spark-erosion perforation processing integration lathe slowly, this integration lathe is solved and has the advantage that simple occupation of land space is little, convenient operation, working range are wide, machining efficiency is high, the degree of integrating is high.

In order to achieve the above purpose, the present invention is realized by the following technical solution:

in a first aspect, the utility model provides a walk a spark-erosion wire cutting/spark-erosion perforation processing integration lathe slowly, include:

a wire winding drum part for winding and storing the electrode wire;

a wire feeding portion including a wire feeding hose part through which the wire electrode extended from the wire winding drum part passes and a wire feed guide wheel part; the wire electrode is wound on the driving wheel and the driven wheel, extends to a cutting area and then is recovered to the wire winding barrel part through the wire collecting gear part;

the driving wheel is connected with the hysteresis brake to provide constant tension for the wire electrode.

As a further technical scheme, a pressing wheel is arranged at the driven wheel and is tightly attached to the driven wheel so as to press the electrode wire; the pinch roller is connected with the lever wheel through the connecting rod, the lever wheel is connected with the spring, and pressing force is provided for the pinch roller through the tension of the spring by utilizing the lever principle.

As a further technical scheme, the wire winding gear part comprises a driving gear and a driven gear which are meshed with each other, the electrode wire penetrates through the wire feeding hose part at the meshing position of the two gears, and meshing force generated by the two gears extrudes the electrode wire so as to drive the electrode wire to move.

As a further technical scheme, the wire moving part further comprises a guide wheel component, and the guide wheel component is provided with a plurality of supporting and guiding wires.

As a further technical scheme, the electrode wire cutting device further comprises an eye mask component, wherein the eye mask component comprises two oppositely arranged eye masks, one eye mask can move up and down, and the two eye masks are arranged up and down corresponding to the cutting areas of the electrode wires.

As a further technical scheme, the wire moving part is fixed on a supporting plate, the supporting plate is fixed on a two-axis motion platform part, and the two-axis motion platform drives the supporting plate to move on a horizontal two-dimensional plane.

As a further technical scheme, the supporting plate is connected with the single-shaft motion platform, the lower end of the single-shaft motion platform is connected with the electrode clamping component, the electrode clamping component clamps the electrode, the electrode is arranged corresponding to the cutting area, and the electrode clamping component can rotate horizontally.

As a further technical scheme, the cutting device also comprises a water tank for containing working fluid, wherein the cutting area is positioned in the water tank; a workpiece support is arranged in the water tank to support a workpiece; the side surface of the water tank is provided with a water inlet and a water outlet, the water tank is connected with a working fluid circulating system through a liquid conveying pipe, and the water tank is also provided with a water level sensor.

As a further technical scheme, the water tank is provided with a water level maintaining cylinder, the bottom of the water level maintaining cylinder is connected to a working fluid circulating system through a liquid conveying pipe, and the working fluid circulating system is connected with the eye mask component through a liquid conveying hose.

In a second aspect, the present invention provides a method for machining a slow wire electrical discharge machining/electrical discharge machining integrated machine tool, including the steps of:

firstly, carrying out perforation processing; placing a workpiece in a piercing area, working in an electric spark piercing mode, driving an electrode clamping part to move by a single-shaft motion platform, and piercing the workpiece by the electrode clamped by the electrode clamping part;

after the machining is finished, the mode is switched to a linear cutting mode, the eye mask is moved to the hole aligned with the machining, wire winding operation is carried out, the electrode wire penetrates through the machined hole, tension is provided by a hysteresis brake, and the workpiece moves according to a set track under the driving of the two-axis motion platform component;

and after the machining is finished, taking the workpiece down from the clamp to finish the one-time machining.

Above-mentioned the utility model has the advantages as follows:

the utility model discloses an integration lathe twines the wire electrode through sending a guide pulley part, and action wheel and hysteresis brake connect, and hysteresis brake's input current has better linear relation with the moment of torsion that produces, utilizes this nature can provide invariable power from the driving wheel to for the wire electrode provides invariable tension, solved the wire electrode tension problem on the wire cut electrical discharge machining bed of walking slowly, make the course of working more stable, the machining precision is higher.

The utility model discloses an integration lathe integrates the degree height, walks the wire cut at a slow speed with the electric spark and processes integratively with the perforation, realizes the processing method of two kinds of differences on same lathe, and the degree of integrating is high.

The integrated machine tool of the utility model has convenient operation and high efficiency; different processing modes are integrated on the same machine tool, the size is small, the structure device is simple and easy to operate, the wire cutting and the perforation processing are integrally connected, the wire cutting and the perforation processing cannot generate position conflict, and the wire cutting and the perforation processing can be set in a numerical control system only when the processing modes are switched.

Drawings

The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.

Fig. 1 is a schematic view of an integrated machine tool according to embodiment 1 of the present invention;

fig. 2 is another schematic view of the integrated machine tool according to embodiment 1 of the present invention;

FIG. 3 is a schematic view of the wire winding part of the integrated machine tool of the present invention;

FIG. 4 is a schematic view of the rest part of the integrated machine tool after the control box is removed;

FIG. 5 is a schematic view of a wire moving part and a single-axis motion platform part of the present invention;

FIG. 6 is a schematic view of key parts of the wire feeding part of the present invention;

FIG. 7 is a schematic view of a part of the middle water tank of the present invention;

FIG. 8 is a cross-sectional view of the wire feeding guide wheel assembly and the guide wheel assembly of the present invention;

fig. 9 is a schematic view of a part of a two-axis motion platform in embodiment 1 of the present invention;

fig. 10 is a schematic view of a single-axis motion platform according to the present invention;

fig. 11 is a schematic view of an integrated machine tool according to embodiment 2 of the present invention;

fig. 12 is a schematic view of the rest part of embodiment 2 of the present invention after the control box is removed;

fig. 13 is a schematic view of a part of a two-axis motion platform according to embodiment 2 of the present invention;

FIG. 14a shows a shape of a workpiece to be machined according to the present invention;

FIG. 14b is a schematic illustration of a trace for processing the shape of FIG. 14 a;

in the figure: the mutual spacing or size is exaggerated to show the position of each part, and the schematic diagram is only used for illustration;

wherein, 1-winding silk tube component, 101-silk feeding tube, 102-silk winding tube, 103-silk feeding tube shaft, 104-silk winding tube shaft, 105-bearing, 106-silk winding tube motor, 107-coupler, 2-base bracket, 3-silk feeding hose component, 301-silk feeding hose, 302-silk winding hose, 4-support plate, 5-silk feeding guide wheel component, 501-driving wheel, 502-driven wheel, 503-driving wheel shaft, 504-driven wheel shaft, 6-hysteresis brake, 7-pinch wheel, 8-spring component, 801-spring, 802-spring bracket, 9-lever wheel component, 901-lever wheel, 902-lever wheel shaft, 10-guide wheel component, 1001-guide wheel, 1002-guide wheel shaft, 11-bearing, 12-silk winding gear component, 1201-driving gear, 1202-driven gear, 1203-driving gear shaft, 1204-driven gear shaft, 13-wire winding motor, 14-water tank component, 15-workpiece support, 16-water level holding barrel component, 17-water level detection sensor component, 18-electromagnetic switch, 19-liquid conveying pipe component, 1901-liquid inlet pipe, 1902-liquid outlet pipe, 1903-water level holding barrel liquid outlet pipe, 20-two-axis motion platform component, 2001-x axis motion platform, 2002-y axis motion platform, 2003-motor, 2004-coupler, 2005-ball screw, 2006-sliding shaft, 2007-y axis single axis motion platform, 2008-support, 2009-sliding block, 2010-motor support, 2011-slide block, 21-single shaft motion platform component, 2101-slide rail, 2102-slide block, 2103-motor, 2104-bracket, 2105-ball screw, 2106-coupler, 22-electrode rotating motor, 23-electrode clamping component, 24-eye membrane component, 2401-eye membrane seat, 2402-eye membrane, 25-transfusion hose, 26-control box body component, 27-control system, 28-working fluid circulating component, 29-base component, 30-electrode wire, 31-electrode, 32-Fu Ma Lun.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Example 1

The utility model discloses an among the typical embodiment, as shown in fig. 1, provide a wire cut electrical discharge machining/spark-erosion perforation processing integration lathe of walking slowly, it includes the book silk part, walks silk part, water tank part, diaxon motion platform part, unipolar motion platform part and control box part. Wherein, the silk winding part comprises a silk winding barrel part and a base support plate; the wire feeding part comprises a wire feeding hose part, a supporting plate, a wire feeding guide wheel part, a hysteresis brake part, a pressing wheel part, a spring part, a lever wheel part, a guide wheel part, a bearing part, a wire winding gear part and a motor part; the water tank part comprises a water tank component, a workpiece bracket component, a water level holding barrel component, a water level detection sensor component, an electromagnetic switch component and a liquid conveying pipe component; the two-axis motion platform part comprises two-axis motion platform components; the single-shaft motion platform part comprises a single-shaft motion platform part, a motor part, an electrode clamping part, an eye mask part and a transfusion hose part; the control box part comprises a control box body part, a control system, a numerical control system part and a working fluid circulating part. Wherein, the storage and the recovery of wire electrode are realized to the silk winding part, walk the required pulling force of turning to and providing cutting part wire electrode of silk part realization wire electrode, the water tank part is the environment that wire-electrode cutting and perforation processing provided the working solution, the diaxon motion platform part realizes that wire electrode and electrode move in xy plane, the length of work wire electrode is controlled through adjusting the distance between two eye films with the feeding of electrode and back down to unipolar motion platform realization electrode, the control box part realizes bearing of whole device, control and the circulation of working solution.

The wire winding barrel component 1 consists of a wire feeding barrel 101, a wire winding barrel 102, a wire feeding barrel shaft 103, a wire winding barrel shaft 104, a wire winding barrel shaft bearing 105, a wire winding barrel motor 106 and a coupling 107; the wire feeding guide wheel component 5 consists of a driving wheel 501, a driven wheel 502, a driving wheel shaft 503 and a driven wheel shaft 504; the spring member 8 is composed of a spring 801 and a spring holder 802; the lever wheel component 9 is composed of a lever wheel 901 and a lever wheel shaft 902; the guide wheel member 10 is composed of a guide wheel 1001 and a guide wheel shaft 1002; the wire winding gear part 12 is composed of a driving gear 1201, a driven gear 1202, a driving gear shaft 1203 and a driven gear shaft 1204; the liquid transfer tube unit 19 is composed of a liquid inlet tube 1901, a liquid discharge tube 1902, and a liquid discharge tube 1903 for a water level holding cylinder; the two-axis motion platform component 20 consists of an x-axis motion platform 2001 and a y-axis motion platform 2002; the single-shaft motion platform component 21 consists of a slide rail 2101, a slide block 2102, a motor 2103, a bracket 2104, a ball screw 2105 and a coupler 2106; the eye mask member 24 is composed of an eye mask holder 2401 and an eye mask 2402.

As shown in fig. 1, 2 and 3, the yarn winding tube member 1 is attached to the base frame 2, and the base frame 2 is fixedly connected to the base member 29. The wire winding barrel part is a winding part of electrode wires and comprises a wire feeding barrel and a wire collecting barrel, wherein the wire feeding barrel can rotate freely, the wire collecting barrel is connected with a stepping motor, and the wire collecting barrel can rotate under the driving of the motor during wire collection.

The wire feeding cylinder 101 and the wire collecting cylinder 102 are both mounted on a shaft, wherein the wire feeding cylinder shaft 103 is fixed on the base support 2, the wire feeding cylinder is fixed on the wire feeding cylinder shaft 103 through a bearing 105, the wire collecting cylinder shaft 104 is connected on the base support through a bearing 105, one end of the wire collecting cylinder shaft is connected with a wire collecting cylinder motor 106 through a coupler 107, and the other end of the wire collecting cylinder shaft is connected with the wire collecting cylinder 102.

The wire-moving hose part 3 is connected with the wire winding part and the wire moving part and is a conveying and protecting part of the electrode wire. The wire-feeding hose part 3 comprises a wire-feeding hose 301 and a wire-collecting hose 302, and both the wire-feeding hose and the wire-collecting hose are used for electrode wires to pass through.

The supporting plate 4 is fixed on the two-axis motion platform component 20, is a supporting component of the wire moving part and the single-axis motion platform part, completes the fixing and supporting of the motor, the guide wheel and the bearing, and simultaneously controls the two-axis motion platform through the control system to complete the processing of the complex track of the wire cutting.

As shown in fig. 4, 5 and 6, the wire feed guide wheel assembly is fixed to the support plate via a bearing and provides a tension member for the wire electrode. The wire electrode winding machine comprises a driving wheel and a driven wheel, which are both made of wear-resistant high polymer materials with high strength, and a wire electrode is wound on two wheels after being transported by a wire feeding hose. The driving wheel 501 and the driving wheel shaft 503 are fixed together, the driving wheel shaft 503 is connected to the support plate through a bearing 11, the other end of the driving wheel shaft is connected with the hysteresis brake 6 through a coupler, the driven wheel shaft 504 is fixed to the support plate 4, and the driven wheel 502 is connected to the driven wheel shaft 504 through a bearing 11.

The driving wheel and the driven wheel are respectively provided with 3-5 guide grooves on the circumferential surface, the guide grooves are rectangular, the width and the depth are 2.5-3.5 mm, the positions and the number of the guide grooves of the two wheels are the same, and the electrode wires are fixed through the guide grooves, so that the mutual extrusion fracture of the electrode wires due to position coincidence caused by too many winding turns is prevented.

Because the driving wheel is connected with the hysteresis brake through the coupler, and the input current of the hysteresis brake has a better linear relation with the generated torque, the constant force can be provided on the driven wheel by utilizing the property, thereby providing constant tension for the wire electrode.

The pinch roller 7 is connected to a wheel shaft through a bearing 11, the wheel shaft is connected with a lever wheel 901 through a connecting rod, the lever wheel 901 is fixedly connected with a lever wheel shaft 902, the lever wheel shaft 902 is fixed on the supporting plate 4, the other end of the lever wheel 901 is connected with a spring 801 through a connecting plate, the other end of the spring 801 is connected to a spring support 802, the spring support 802 is fixed on the supporting plate 4, and pressing force is provided for the pinch roller through the tension of the spring by utilizing the lever principle.

The pinch roller is made of plastic materials, has smooth surface, is arranged below the driven wheel and clings to the driven wheel, can further prevent the dislocation of the wire electrode on the one hand, and simultaneously maintains the winding state of the wire electrode on the driving wheel and the driven wheel when the wire breaking phenomenon occurs in the machining process, thereby reducing the workload of wire feeding.

The wire collecting gear is fixed on the supporting plate through a bearing and provides a component for the speed of the wire electrode, the wire collecting gear comprises a driving gear and a driven gear, the material is plastic, the number of teeth is 20-30, and the modulus is 2.5. The driving gear 1201 is fixed on a driving gear shaft 1203, the driving gear shaft 1203 is fixed on the support plate 4 through a bearing 11, the driving gear shaft 1203 is connected with a wire collecting motor 13 through a coupler, the driven gear 1202 is connected on a driven gear shaft 1204 through the bearing 11, the driven gear shaft 1204 is fixed on the support plate 4, and the two gears are meshed with each other. The electrode wire penetrates through the wire-receiving hose at the meshing position of the gear, and the electrode wire is extruded by the meshing force generated by the gear so as to be driven to move at the rotating speed of the gear.

The guide wheel component 10 is fixed on the supporting plate through a bearing, and is made of die steel, so that the electrode wire is guided to accurately enter the eye mask hole. In this embodiment, the guide wheel member 10 includes 3 guide wheels 1001, which are respectively located at the upper right, lower right, and lower left of the support plate. The three guide wheels 1001 are connected to a guide wheel shaft 1002 through bearings 11, and the guide wheel shaft 1002 is fixed to the support plate 4.

Guide grooves are formed in the periphery of the guide wheel, the guide grooves are rectangular, the width and the depth of each guide groove are 2.5-3.5 mm, the fixing of the electrode wires in the guide grooves is completed, and the deviation of the electrode wires in the direction is prevented.

In the scheme, the bearings are made of ceramic materials, so that the influence on the safety of operators due to the electrification of the wire electrode during processing is avoided, and the stability of a current interference control system is also prevented.

As shown in fig. 1 and 7, the water tank 14 is placed on the base member 29, the interior of the water tank is filled with working fluid required for processing, and a workpiece is cut in the water tank; the workpiece support 15 is placed at the bottom of the water tank and used for supporting workpieces, the workpiece support is in a shape like a Chinese character 'shan', the plates on two sides are used for placing linear cutting workpieces, the plate extending out of the middle is slightly wide and used for placing the workpieces needing perforation processing, a water inlet and a water outlet are formed in the side face of the middle water tank, and a liquid conveying pipe is connected with a working liquid circulating system and the water tank. The water outlet and the water inlet are both controlled by an electromagnetic switch, wherein the switch of the water outlet can be directly controlled, the switch of the water inlet is connected with a water level sensor arranged at the top of the water tank, and the switch of the water inlet is closed when the working liquid contacts the water level sensor.

A water level holding tank 16 is placed in the upper left corner of the tank to prevent an excessive liquid level in the tank. The water level keeping cylinder is hollow, the upper end of the water level keeping cylinder is provided with a small opening, the bottom of the water level keeping cylinder 16 is connected to a working fluid circulating system 28 through a liquid conveying pipe 1903, and when the liquid level in the water tank is higher than the small opening, working fluid flows into the cylinder and enters the working fluid circulating device along the liquid conveying pipe; the water level sensor 17 is arranged at the position 5-10 cm away from the top end of the water tank; the electromagnetic switch is arranged on the liquid inlet pipe 1901 and the liquid outlet pipe 1902; the liquid inlet pipe 1901 is arranged at a position 5-10 cm away from the top end of the water tank, and the other end of the liquid inlet pipe is connected with the working liquid circulating system 28; the drain pipe 1902 is installed at a distance of 1-2 cm from the bottom of the water tank, and the other end is connected with the working fluid circulating system 28.

As shown in fig. 1 and 9, two-axis motion stage 20 is fixed to a support of base member 29, and includes x-axis motion stage 2001 and y-axis motion stage 2002, which are connected to each other to implement two-dimensional motion. As shown in fig. 10, the single-axis movement platform 21 is fixed on the support plate 4, the lower ends of the single-axis movement platform are respectively connected with the electrode clamping part 23 and the eye mask seat 2401 through brackets, the eye mask 2402 is arranged on the eye mask seat 2401, and the eye mask seat 2401 is connected with the working fluid circulating system 28 through the infusion hose 25. The motor 2103 of the single-shaft motion platform 21 is connected with the ball screw 2105 through the coupler 2106, the ball screw 2105 is in sliding fit with the sliding block 2102, the sliding block 2102 is further in sliding connection with the sliding rail 2101, the sliding rail 2101 is fixedly connected with the bracket 2104, and the motor 2103 is fixed on the bracket 2104. The slider 2102 is fixedly connected to the support plate 4.

The electrode clamping part 23 is connected to the lower end support of the single-shaft motion platform 21 through a bearing, and is connected to the electrode rotating motor 22 through a coupler, and the top motor is controlled by the control system to move up and down. The electrode clamping part is a clamping part of an electrode during perforating processing and is provided with an independent motor to rotate under the control of a control system.

The eye mask part 24 is divided into two eye masks 2402 and eye mask holders 2401, one of which is fixed on the support plate and the other of which is fixed on the single-axis movement platform. The eye mask is arranged on the eye mask seat, ruby materials are arranged inside the eye mask, the positions of the two eye masks with ruby are oppositely arranged, the cutting wires pass through the two cutting wires after passing through the guide wheel, and the cutting wires are guaranteed to be stable and not to shake. The eye mask seat is provided with a small hole which is connected with a transfusion tube and used for flushing liquid during processing.

As shown in fig. 1 and 2, all the devices are mounted on a base on the upper surface of a control box body part 26, which is a carrying part, a power supply system and a working fluid circulating system are placed in the control box, the power supply system provides pulse power for wire cut electrical discharge machining and perforation machining, the working fluid circulating system filters and pumps used working fluid into a water tank, and a control system 27 and a working fluid circulating part 28 are respectively placed on a first layer and a second layer of the control box body part 26; and the control panel connected with the control system is arranged in the left front of the box body. The control system realizes the control of the whole device, and the pulleys and the base are arranged at the lower part of the control box, so that the movement and the fixation of the whole device can be realized.

The machine tool is simple in structure, components in each part are simple and ingenious in design, complex structures do not exist, simple bolt connection is achieved, installation is convenient, complex transmission structures do not exist, and therefore the mechanical structure of the machine tool is simpler.

The machine tool realizes the general operations of wire winding and wire changing as follows:

the method comprises the following steps: firstly, a cutting wire (namely an electrode wire 30) is taken out of a wire feeding cylinder 101, penetrates through a wire feeding hose part 3, enters a wire feeding part, is wound along a cutting wire groove on a driving wheel 501, is taken down after the winding is finished, is pressed downwards by a spring 801, is wound along the cutting wire groove on a driven wheel 502, is pressed tightly on the driven wheel by the pressing wheel after the winding is finished, is provided with the spring, is manually drawn to a proper length, is placed in a groove of a right upper guide wheel 1001 for guiding, penetrates into an upper eye film part 24, penetrates through a lower eye film part 24, is placed in a groove of a right lower guide wheel 1001 for guiding after the winding is finished, is placed in a groove of a left lower guide wheel 1001 for guiding after the winding is finished, is placed in an engagement area of a driving gear and a driven gear, and is wound into a wire collecting cylinder 102 through a wire feeding hose part 1202 3 after the winding is finished;

step two: opening the wire winding motor 13 and the hysteresis brake 6 of the driving gear, and closing the wire winding motor 13 and the hysteresis brake 6 when the wires are tensioned and start to move to finish the wire winding operation;

step three: when the wire is broken and needs to be replaced, the action wire of the pressing wheel 7 only loosens after the pressing wheel, so that the wire is broken after the tensioning wheel is taken down, the cutting wire is manually pulled to a proper length from the driven wheel, is placed in the groove of the upper right guide wheel 1001 for guiding, then penetrates into the upper eye film part 24, penetrates through the lower eye film part 24, is placed in the groove of the lower right guide wheel 1001 for guiding after penetrating out, is placed in the groove of the lower left guide wheel 1001 for guiding after completing, is placed in the meshing area of the driving gear 1201 and the driven gear 1202 after completing, penetrates out of the meshing area, and is wound into the wire collecting cylinder 102 through the wire conveying hose 3;

step four: and opening the wire winding motor 13 and the hysteresis brake 6 of the driving gear, and closing the wire winding motor 13 and the hysteresis brake 6 when the wire is tensioned and starts to move to finish the wire winding operation.

The machining method of the slow wire electric discharge machining/electric discharge drilling integrated machine tool as described above, when performing drilling and wire cutting integrated machining, includes the steps of:

1) Firstly, carrying out perforation processing; placing a workpiece in a perforation processing area, opening a switch of a liquid inlet pipe to add working liquid into a water tank, selecting the working liquid with deionized water, opening a numerical control system and setting the numerical control system to be in an electric spark perforation processing mode, opening a motor clamped by an electrode, starting a power supply and a liquid flushing switch, starting a processing program, and finishing perforation processing by a single-shaft motion platform under the control of the numerical control system;

2) After the processing is finished, the power supply is turned off, and the liquid flushing switch is turned off;

3) Switching the control system to a linear cutting mode, moving the eye mask hole to be aligned with the hole which is just machined through the control system, carrying out wire winding operation to enable the wire to penetrate through the machined hole, and taking a brass wire as a cutting wire; turning on a wire moving and wire collecting motor, setting tension of a hysteresis brake, turning on a power supply and a liquid flushing switch, starting a machining program, and moving a workpiece according to a program set track under the driving of a two-axis motion platform component;

4) And after the machining is finished, the power supply is turned off, the liquid flushing switch is turned off, the wire feeding and winding motor is turned off, the control system is turned off, the workpiece is taken down from the fixture, and one-time machining is finished.

The specific processing embodiment one: taking alloy steel 2Cr13 wire cutting with the thickness of 30mm as an example, brass wires with the diameter of 0.07-0.15 mm are taken as cutting wires. Firstly, a workpiece is placed on a workpiece support, a switch of a liquid inlet pipe is opened to add working liquid into a water tank, the working liquid is selected from deionized water working liquid, a numerical control system is opened and set to be in a wire cut electrical discharge machining mode, a wire feeding and wire collecting motor is opened, a hysteresis brake is opened to set the tension to be 10N, the wire feeding speed to be 10mm/s, power supply parameters are set to be 250-350V of open circuit voltage, the machining current to be 5-30A, the frequency to be 5-10kHz and the duty ratio to be 40% -80%, a power supply and a liquid flushing switch are started, a machining program is started, and the workpiece moves according to a program set track under the drive of a two-axis motion platform. And after the machining is finished, the power supply is turned off, the liquid flushing switch is turned off, the wire feeding and winding motor is turned off, the control system is turned off, and the workpiece is taken down from the clamp to finish the one-time machining.

Specific processing example two: for example, a steel alloy is used for forming a circular hole, and a copper electrode having a diameter of 5mm is used. Firstly, a workpiece is placed in a perforation processing area, a switch of a liquid inlet pipe is opened to add working liquid into a water tank, the working liquid is selected from deionized water working liquid, a numerical control system is opened and set to be in an electric spark perforation processing mode, a motor clamped by an electrode is started, the rotating speed of the motor is set to be 500r/min, power supply parameters are set to be 80-120V of open-circuit voltage, processing current is 5-10A, frequency is 5-10kHz, duty ratio is 40% -80%, a power supply and a liquid flushing switch are started, a processing program is started, and a single-shaft motion platform completes perforation processing under the control of the numerical control system. And after the machining is finished, the power supply is turned off, the liquid flushing switch is turned off, the control system is turned off, and the workpiece is taken down from the clamp to finish the one-time machining.

Specific processing example three: taking the pattern shown in the figure of the alloy steel workpiece subjected to the integrated cutting machining of the inner perforation line of the workpiece as an example, the perforation machining is firstly carried out, and a copper electrode with the diameter of 0.5mm is adopted. Placing a workpiece in a perforation processing area, opening a switch of a liquid inlet pipe to add working liquid into a water tank, selecting deionized water working liquid as the working liquid, opening a numerical control system and setting the numerical control system to be in an electric spark perforation processing mode, opening a motor clamped by an electrode, setting the rotating speed of the motor to be 500r/min, setting power supply parameters to be 80-120V of open-circuit voltage, processing current to be 5-10A, frequency to be 5-10kHz and duty ratio to be 40% -80%, starting a power supply and a liquid flushing switch, starting a processing program, and finishing perforation processing by a single-shaft motion platform under the control of the numerical control system. After the processing is finished, the power supply is turned off, the flushing switch is turned off, the control system is switched to a linear cutting mode, the control system moves the eye mask hole to be aligned with the hole which is just processed, the wire winding operation is carried out, the wire penetrates through the processed hole, and a brass wire with the diameter of 0.07-0.15 mm is used as the cutting wire. The wire moving and wire collecting motor is started, the wire moving speed is set to be 10mm/s, the power supply parameters are set to be 80-120V of open-circuit voltage, the machining current is 5-10A, the frequency is 5-10kHz, the duty ratio is 40% -80%, the power supply and a liquid flushing switch are started, a machining program is started, and a workpiece moves according to a program set track under the driving of the two-axis platform. And after the machining is finished, the power supply is turned off, the liquid flushing switch is turned off, the wire feeding and winding motor is turned off, the control system is turned off, and the workpiece is taken down from the clamp to finish the one-time machining.

Example 2

In this embodiment, the same wire winding part, wire running part, water tank part, single-axis motion platform part, and control box part as those in embodiment 1 are used, and the difference is that the transmission mode of the two-axis motion platform part in this embodiment is different.

In this embodiment, the two-axis motion platform assembly is mounted on a water tank and the run hose portion is rotated 90 degrees to increase the motion space.

The two-axis motion platform component comprises a y-axis single-axis motion platform 2007, the y-axis single-axis motion platform 2007 is connected with a sliding shaft 2006 through a sliding block 2011, a motor support 2010 is fixed on a water tank, a motor 2003 is fixed on the motor support 2010 and is connected with a ball screw 2005 through a coupler 2004, the ball screw 2005 is connected with the y-axis single-axis motion platform 2007, a sliding block 2009 can move along the y-axis single-axis motion platform, and the sliding block is connected with a support plate 4 through a support 2008. Ball is fixed at the water tank, and y axle unipolar motion platform is fixed in the water tank.

The working principle in this embodiment is the same as that in embodiment 1, and is not described herein again.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A slow wire-moving electrospark wire-electrode cutting/electrospark perforation processing integrated machine tool is characterized by comprising:

a wire reel member for winding and storing the wire electrode;

a wire feeding portion including a wire feeding hose part through which the wire electrode extended from the wire winding drum part passes and a wire feeding guide wheel part; the wire electrode is wound on the driving wheel and the driven wheel, extends to a cutting area and then is recovered to the wire winding barrel part through the wire collecting gear part;

the driving wheel is connected with the hysteresis brake to provide constant tension for the wire electrode.

2. The slow-speed wire cut electric discharge machining/electric discharge machining integrated machine tool according to claim 1, wherein a pressing wheel is arranged at the driven wheel, and the pressing wheel is tightly attached to the driven wheel to press the electrode wire; the pinch roller is connected with the lever wheel through the connecting rod, the lever wheel is connected with the spring, and pressing force is provided for the pinch roller through the tension of the spring by utilizing the lever principle.

3. The slow-speed wire cut electric discharge machining/electric discharge drilling machine according to claim 1, wherein the wire retracting gear part comprises a driving gear and a driven gear which are meshed with each other, the electrode wire penetrates through the wire feeding hose part at the meshing position of the two gears, and meshing force generated by the two gears extrudes the electrode wire to drive the electrode wire to move.

4. The slow-wire edm/edm integrated machine tool according to claim 1, wherein said wire feeding section further comprises a guide wheel member provided with a plurality of support guides for supporting the wire electrode.

5. The slow-moving wire electric discharge machining/electric discharge piercing machining integrated machine according to claim 1, further comprising an eye membrane member including two eye membranes disposed in opposition to each other, one of the eye membranes being movable up and down, the two eye membranes being disposed up and down in correspondence with a cutting region of the wire electrode.

6. The slow-speed wire electric discharge machining/electric discharge drilling machining integrated machine tool as claimed in claim 1, wherein the wire moving part is fixed to a support plate fixed to a two-axis moving platform part, and the support plate is moved in a horizontal two-dimensional plane by the two-axis moving platform.

7. The slow-wire electric discharge wire cutting/electric discharge machining integrated machine tool according to claim 6, wherein the support plate is connected to a single-axis moving platform, a lower end of the single-axis moving platform is connected to an electrode holding member, the electrode holding member holds an electrode, the electrode is disposed corresponding to the cutting area, and the electrode holding member is horizontally rotatable.

8. The slow-wire electric discharge wire cutting/electric discharge piercing integrated machine according to claim 1, further comprising a water tank containing a working fluid, wherein the cutting area is located in the water tank; a workpiece support is arranged in the water tank to support a workpiece.

9. The slow-speed wire electric discharge machining/electric discharge drilling machining integrated machine tool as claimed in claim 8, wherein a water inlet and a water outlet are formed in the side face of the water tank, the water tank is connected with the working fluid circulating system through a liquid conveying pipe, and the water tank is further provided with a water level sensor.

10. The slow wire electric discharge machining/electric discharge machining integrated machine tool according to claim 8, wherein the water tank is provided with a water level holding cylinder, a bottom of the water level holding cylinder is connected to the working fluid circulation system through a fluid pipe, and the working fluid circulation system is connected to the eye mask member through a fluid hose.

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