CN110773827A - A lifting oil tank for electric discharge machining and electric discharge machine - Google Patents

Abstract

The invention provides a lifting oil tank for electric discharge machining, which has a reasonable structure, and the electric discharge machining oil in the oil tank can be lifted and lowered synchronously with the oil tank, without waiting for oil drain and oil intake time, which not only improves the convenience of the operator, but also reduces the The time spent in operation includes a workbench on the base, a lifting oil tank is arranged on the periphery of the worktable, the lifting mechanism can drive the lifting oil tank to move up and down, the lifting oil tank includes a jacket, and the jacket is provided with an oil inlet, and the lifting oil tank There is an overflow inlet on the upper part. The discharge oil enters the jacket from the oil inlet and overflows from the overflow inlet into the lifting oil tank. There is also an overflow outlet on the inner side of the lifting oil tank. Lifting in the oil tank can discharge the discharge oil in the lifting oil tank through the overflow outlet. The rear side of the base is provided with an oil tank, the oil tank is connected with an oil pump, and the oil tank is connected to the oil inlet and the overflow outlet through a pipeline. Discharger for oil sump.

Description

A lifting oil tank for electric discharge machining and electric discharge machine

technical field

The invention relates to the technical field of electric discharge machines, in particular to a lifting oil tank for electric discharge machining and an electric discharge machine.

Background technique

The use of the oil tank of the electric discharge machine can provide oil-immersed electric discharge machining during the processing, cooling and removing the waste residue in the processing. After the processing is completed, the electric discharge machining oil must be drained before the upper and lower molds can be opened. Generally, the front door is manually opened. However, in the automatic processing system, the lifting and lowering of the oil tank must be automatically controlled, so that the mold can be automatically loaded and lowered through the mechanical arm, so a reliable automatic lifting device is required.

At present, the more mature automatic lifting devices are represented by Swiss and Japanese equipment. How to make a more reliable and easy-to-use oil tank has become one of the key technologies to provide an automatic system. However, these prior art oil tank lifting structures, Limited by the design of its spatial structure, there are several shortcomings to be improved.

The time efficiency of the automatic oil drainage and oil intake process is also a key point, and it is also a difficult place to overcome in the design of the current lifting oil tank. At the same time, the characteristics of the discharge oil will cause the oil seal of the rubber products to harden, and the leakage problem should also be considered. , are all issues to be considered in the automatic lifting oil tank device.

SUMMARY OF THE INVENTION

In view of the above problems, the present invention provides a lifting oil tank for electric discharge machining, and also provides an electric discharge machine using the lifting oil tank, which has a reasonable structure, and the EDM oil in the oil tank can be lifted and lowered synchronously with the oil tank without waiting for oil to drain. It not only improves the convenience of the operator, but also reduces the time spent on operation.

The technical solution is as follows: a lifting oil tank for electric discharge machining, which includes a base, a workbench is arranged at the front end of the base, a lifting oil groove is arranged on the periphery of the worktable, and the lifting oil groove corresponds to the work. The platform is provided with a space, and it is characterized in that: the lifting oil tank is installed on the lifting mechanism, the lifting mechanism can drive the lifting oil tank to move up and down, the lifting oil tank includes a jacket, and the jacket is provided with an inlet and outlet. Oil port, an overflow inlet is arranged on the inner side of the lifting oil tank, and the discharge oil enters the jacket from the oil inlet and overflows into the lifting oil tank from the overflow inlet. An overflow outlet is also provided on the inner side. As the lift oil tank descends, the worktable is lifted in the lift oil tank to discharge the discharge oil in the lift oil tank through the overflow outlet. The rear side of the oil tank is provided with an oil tank, the oil tank is connected with an oil pump, and the oil tank is connected with the oil inlet and the overflow outlet through a pipeline.

Further, the workbench includes a mandrel fixed on the base, and a marble workbench is installed on the upper end of the mandrel through a workbench fixing plate.

Further, the lifting mechanism includes a ball screw, the ball screw is connected with a servo motor, a connecting plate is fixed on the screw nut of the ball screw, and the connecting plate is connected to the lifting cylinder adapter plate. The lifting oil cylinder adapter plate is provided with a mandrel groove corresponding to the mandrel, the lifting oil groove is mounted on the lifting oil cylinder adapter plate, and the lower end of the lifting oil cylinder adapter plate is provided with a mandrel anti-corrosion plate. In the leakage ring, the lifting mechanism further includes a linear track, and the linear track is provided with a sliding block which is slidably matched with the linear track, and the sliding block is connected with the connecting plate.

Further, two seals are provided on the mandrel leak-proof ring to be sealed with the mandrel, and the seals are made of polytetrafluoroethylene.

Further, a lifting oil tank pneumatic cylinder is also arranged on the base, a lifting oil tank pneumatic cylinder bracket is installed on the piston rod of the lifting oil tank pneumatic cylinder, and the lifting oil tank pneumatic cylinder bracket is connected with the lifting oil cylinder adapter plate.

Further, the rear side of the oil tank is provided with an oil inlet filter and an oil outlet filter, the oil inlet filter and the oil outlet filter are respectively provided with a filter inlet and a filter outlet, and the oil pump includes an oil inlet pump. And the oil outlet pump, the oil inlet pump pumps the discharge oil in the oil tank to the filter inlet of the oil inlet filter through the pipeline, and the discharge oil is filtered by the oil inlet filter and discharged from the filter outlet of the oil inlet filter, Then it is sent into the oil inlet through a pipeline, and the discharge oil discharged from the overflow outlet is sent to the filter inlet of the oil outlet filter through a pipeline, and the filter inlet of the oil outlet filter is connected with the outlet through a pipeline. An oil pump is connected, and the oil outlet pump pumps the discharge oil filtered by the oil outlet filter back into the oil tank.

Further, an oil receiving chassis is arranged on the base and below the lifting oil tank.

An electric discharge machine is characterized in that it includes the above-mentioned lifting oil tank for electric discharge machining, the rear end of the base is provided with a middle seat, a multi-axis motion mechanism is installed on the middle seat, and the multi-axis motion mechanism is mounted on the A processing assembly is installed, and the multi-axis motion mechanism can drive the processing assembly to move in a three-dimensional space.

Further, the multi-axis motion mechanism includes an x-axis motion component, a y-axis motion component, and a z-axis motion component, the x-axis motion component is provided on the middle seat, and the y-axis motion component is provided on the x-axis motion component. On the assembly, the z-axis motion assembly is fixed on the y-axis motion assembly, the machining assembly is mounted on the z-axis motion assembly, and the X-axis motion assembly and the y-axis motion assembly cooperate to enable the machining assembly to be Moving in a plane parallel to the base, the z-axis movement component can make the processing component move to a processing position, and the X-axis movement component and the y-axis movement component cooperate to enable the processing component to move parallel to the Move within the plane of the table.

Further, the x-axis motion components, the y-axis motion components, and the z-axis motion components respectively include linear modules, and the linear modules include a ball screw, a linear guide, and a servo motor.

The lifting oil tank for electric discharge machining of the present invention drives the lifting and lowering of the oil tank by arranging a lifting mechanism on the base, and the oil tank is connected to the oil tank and the oil pump. Enter into the lift oil tank from the overflow inlet on the lift oil tank, and keep the EDM oil in the lift oil tank. When the lift oil tank descends, the worktable located in the lift oil tank is relatively lifted from the lift oil tank, and the worktable is in the lift oil tank. The lifting can discharge the discharge oil in the lifting oil tank through the overflow outlet, and the EDM oil is returned to the oil tank through the pipeline, which can control the height of the rapid lifting oil tank and the liquid level of the EDM oil. Function, EDM oil is kept in the oil tank, the oil tank rises and the liquid level goes up, and the oil tank goes down; there is no need to wait for the oil drain and oil intake time, which not only improves the convenience of the operator, but also reduces the time spent in operation. The lifting mechanism The ball screw is used with AC servo motor, with linear track, and the lifting precision is high. At the same time, a pneumatic cylinder is also set up to cooperate with the lifting oil tank pneumatic cylinder bracket to drive the lifting oil tank, and the transmission is safe and fast.

Description of drawings

1 is a schematic diagram of a base, a workbench and a lifting mechanism of the present invention;

Fig. 2 is the front view structure schematic diagram of the base, the workbench and the lifting mechanism of the present invention;

Fig. 3 is the sectional view of the R-R direction of Fig. 2;

Fig. 4 is the schematic diagram of the first angle of view of the lifting oil tank;

Fig. 5 is the schematic diagram of the first angle of view of the lifting oil tank;

6 is a schematic top view of a lifting oil tank;

Fig. 7 is the sectional view of the S-S direction of Fig. 6;

8 is a schematic top view of the lifting oil tank for EDM of the present invention after removing the oil tank;

Fig. 9 is the sectional view of the T-T direction of Fig. 8;

Fig. 10 is the schematic diagram when the lifting oil tank of the electric discharge machine of the present invention descends;

Fig. 11 is the schematic diagram when the lift oil tank of the electric discharge machine of the present invention rises;

FIG. 12 is a schematic diagram of another viewing angle of the discharge machine of the present invention;

FIG. 13 is a schematic diagram of the discharge machine of the present invention after removing the cover and the lifting oil tank.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to Figures 1 to 9, a lifting oil tank for electric discharge machining of the present invention includes a base 1, a worktable 2 is arranged at the front end of the base 1, and a lifting oil tank 3 is arranged on the periphery of the worktable, and the lifting oil tank 3 corresponds to work The table 2 is provided with a space 301, the lifting oil tank 3 is installed on the lifting mechanism 5, and the lifting mechanism 5 can drive the lifting oil tank 3 to move up and down. An overflow inlet 304 is provided on the inner side of the oil tank 3. The discharge oil enters the jacket 302 from the oil inlet 303 and then overflows from the overflow inlet 304 into the lifting oil tank. The inner side of the lifting oil tank 3 is also provided with an overflow outlet 305. , As the lifting oil tank 3 descends, the worktable 2 is lifted in the lifting oil tank 3 to discharge the discharge oil in the lifting oil tank 3 through the overflow outlet 305. The rear side of the base is provided with an oil tank 4, and the oil tank 4 is connected with an oil pump, and the oil tank 4 The oil inlet 303 and the overflow outlet 305 are connected by the pipeline 5 .

Specifically, in this embodiment, the worktable 2 includes a mandrel 201 fixed on the base 1 , and a marble worktable 203 is installed on the upper end of the mandrel 201 through the worktable fixing plate 202 .

The lifting mechanism 5 includes a ball screw 501 installed on the middle seat 8, the ball screw 501 is connected with a servo motor 506, a connecting plate 503 is fixed on the screw nut 502 of the ball screw 501, and the connecting plate 503 rotates with the lifting cylinder. The connecting plate 6 is connected, the lifting oil cylinder adapter plate 6 is provided with a mandrel groove 601 corresponding to the mandrel 201, the lifting oil groove 3 is installed on the lifting oil cylinder adapter plate 6, and the lower end of the lifting oil cylinder adapter plate 6 is provided with a mandrel to prevent leakage The ring 7 and the lifting mechanism 5 also include a linear track 504 arranged on the middle seat 8 .

In this embodiment, two seals 701 are provided on the mandrel leak-proof ring 7 to seal with the mandrel 201. The seals 701 are made of polytetrafluoroethylene, and polytetrafluoroethylene is used as the seal, which has good lubricity. , Good chemical resistance, effectively reducing leakage problems, and with double-layer seals, the protection is more in place and durable.

In this embodiment, a lifting oil tank pneumatic cylinder 9 is also provided on the base 1 , a lifting oil tank pneumatic cylinder bracket 10 is installed on the piston rod of the lifting oil tank pneumatic cylinder 9 , and the lifting oil tank pneumatic cylinder bracket 10 is connected with the lifting oil cylinder adapter plate 6 . , On the base 1 and below the lifting oil tank 3, there is an oil receiving chassis, and an oil receiving chassis is reserved at the bottom of the lifting oil tank.

Since impurities will be mixed into the EDM oil after EDM, in one embodiment of the present invention, an oil inlet filter 11 and an oil outlet filter 12 are provided on the rear side of the oil tank 4, and the oil inlet filter 11 includes a filter The inlet 1101 and the filter outlet 1102, the oil outlet filter 12 is respectively provided with a filter inlet 1201 and a filter outlet 1202, the oil pump includes an oil inlet pump 13 and an oil outlet pump 14, and the oil inlet pump 13 pumps the discharge oil in the oil tank 4 to the oil inlet through the pipeline The filter inlet 1101 of the filter 11, the discharge oil is filtered by the oil inlet filter 11 and discharged from the filter outlet 1102 of the oil inlet filter, and then sent to the oil inlet 303 through the pipeline, and some oil is put into the lifting oil tank for EDM use, After use, the discharge oil discharged from the overflow outlet 305 is sent to the filter inlet 1201 of the oil outlet filter through the pipeline, and the filter inlet 1202 of the oil outlet filter is connected to the oil outlet pump 14 through the pipeline, and the oil outlet pump 14 can The discharge oil filtered by the oil filter 12 is pumped back into the oil tank 4 .

In Fig. 8 and Fig. 9, the direction of arrows from A to K schematically represents the flow of EDM oil in a complete work flow. The following describes the work flow of the lifting oil tank for EDM in the above embodiment: when When electrical discharge machining is required, driven by the lifting mechanism, the lifting cylinder rises. At the same time, the oil inlet pump pumps the discharge oil in the oil tank to the filter inlet of the oil inlet filter through the pipeline. The discharge oil is filtered by the oil inlet filter, and then It is discharged from the filter outlet of the oil inlet filter, sent into the oil inlet through the pipeline, and then enters the jacket of the lifting oil tank from the oil inlet. With the pumping, the EDM oil level in the jacket continues to rise. The oil enters the lifting oil tank from the overflow inlet on the lifting oil tank, until the EDM oil level in the lifting oil tank meets the processing requirements, and then the electric discharge machining can be performed. The table is relatively lifted from the lifting oil tank, and the worktable is lifted in the lifting oil tank to discharge the discharge oil in the lifting oil tank through the overflow outlet, and the electric discharge machining oil flows to the filter inlet of the oil outlet filter through the pipeline Filtered and then pumped by the outlet pump, the filtered EDM oil is returned to the tank.

The lifting oil tank for electric discharge machining of the present invention can control the height of the rapid lifting oil tank and the liquid level of the electric discharge machining oil, and has the functions of up and down the oil tank and the liquid level of the electric discharge machining oil at the same time. That is, the oil tank goes down; there is no need to wait for the oil drain and oil intake time, which not only improves the convenience of the operator, but also reduces the time spent in operation. High precision, at the same time, a pneumatic cylinder is set up to cooperate with the lifting oil tank pneumatic cylinder bracket to drive the lifting oil tank, and the transmission is safe and fast. In addition, the worktable is fixed on the base and remains stationary, and the oil cylinder is lifted and lowered, which can ensure that the position of the worktable remains unchanged. The machining reference remains unchanged, which ensures the accuracy of electrical discharge machining.

Referring to FIGS. 1 to 13 , an electric discharge machine is also provided in an embodiment of the present invention, which includes the above-mentioned lifting oil tank for electric discharge machining, and also includes a middle seat 8 provided at the rear end of the base. A multi-axis motion mechanism is installed, a processing component is installed on the multi-axis motion mechanism, and the multi-axis motion mechanism can drive the processing component to move in three-dimensional space.

Specifically, the multi-axis motion mechanism includes an x-axis motion component 15, a y-axis motion component 16, and a z-axis motion component 17. In this embodiment, the x-axis direction is in the length direction of the base, and the y-axis direction is in the width direction of the base On the upper side, the z-axis direction is in the height direction of the base, the x-axis motion component 15 is arranged on the middle seat 8, the y-axis motion component 16 is arranged on the x-axis motion component 15, and the z-axis motion component 17 is fixed on the y-axis motion component 16 On the upper side, the processing component is mounted on the z-axis motion component 17, the X-axis motion component 15 and the y-axis motion component 16 cooperate to make the processing component move in a plane parallel to the table on the base, and the z-axis motion component 17 can make the processing The assembly moves to the processing position. The x-axis motion assembly 15, the y-axis motion assembly 16, and the z-axis motion assembly 17 respectively include linear modules, which include ball screws, linear guides, and servo motors.

The electric discharge machine of the present invention is completely immersed in the lifting oil tank during processing, so that the liquid level of the processing oil body of the main body of the oil tank is kept stable, and the processing component is driven by the multi-axis motion mechanism, so that the processing component can continuously and stably process the workpiece. High-precision machining of workpieces can be maintained.

It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments are to be regarded in all respects as illustrative and not restrictive, and the scope of the invention is to be defined by the appended claims rather than the foregoing description, which are therefore intended to fall within the scope of the claims. All changes within the meaning and scope of the equivalents of , are included in the present invention.

In addition, it should be understood that although this specification is described in terms of embodiments, not each embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole , the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims (10)

1. The utility model provides a lift oil groove for electric discharge machining, its includes the base, the front end of base sets up the workstation, the lift oil groove has been arranged to the periphery of workstation, correspond in the lift oil groove the workstation is equipped with lets a position, its characterized in that: the lifting oil groove is installed on the lifting mechanism, the lifting mechanism can drive the lifting oil groove to move up and down, the lifting oil groove comprises a jacket, an oil inlet is formed in the jacket, an overflow inlet is formed in the inner side face of the lifting oil groove, discharging oil enters the jacket from the oil inlet, the overflow inlet overflows and enters the lifting oil groove, an overflow outlet is further formed in the inner side face of the lifting oil groove, the lifting oil groove descends, the workbench is lifted in the lifting oil groove and can discharge the discharging oil in the lifting oil groove through the overflow outlet, an oil tank is arranged on the rear side of the base and connected with an oil pump, and the oil tank is connected with the oil inlet and the overflow outlet through pipelines.

2. A lift sump for electrical discharge machining according to claim 1, wherein: the workstation is including fixing dabber on the base, the marble workstation is installed through the workstation fixed plate to the upper end of dabber.

3. A lift sump for electrical discharge machining according to claim 2, wherein: elevating system includes ball screw, ball screw is connected with servo motor, be fixed with the connecting plate on ball screw's the screw nut, the connecting plate with the lift cylinder keysets is connected, correspond on the lift cylinder keysets the dabber is equipped with the dabber groove, the installation of lift oil groove on the lift cylinder keysets, the lower extreme of lift cylinder keysets is provided with dabber leak protection ring, elevating system still includes the straight line track, be provided with on the straight line track sliding fit's slider, the slider with the connecting plate is connected.

4. A lift sump for electrical discharge machining according to claim 3, wherein: the mandrel leakage-proof ring is provided with two sealing pieces which are in sealing fit with the mandrel, and the sealing pieces are made of polytetrafluoroethylene.

5. A lift sump for electrical discharge machining according to claim 3, wherein: still set up the lift oil groove pneumatic cylinder on the base, install lift oil groove pneumatic cylinder support on the piston rod of lift oil groove pneumatic cylinder, lift oil groove pneumatic cylinder support with the lift cylinder keysets is connected.

6. A lift sump for electrical discharge machining according to claim 1, wherein: the rear side of oil tank is provided with oil feed filter and the filter of producing oil, the oil feed filter with be provided with respectively on the filter of producing oil and filter the entry and filter the export, the oil pump is including oil feed pump and oil pump, oil feed pump sends the oil pump that discharges in the oil tank to through the pipeline the filtration entry of oil feed filter, discharge oil warp the oil feed filter filters the follow the filtration export discharge of oil feed filter then sends into through the pipeline the oil inlet, follows overflow export exhaust discharge oil is sent to through the pipeline the filtration entry of oil filter, the filtration entry of oil filter pass through the pipeline with the oil pump that produces oil is connected, the oil pump that produces oil will pass through the oil pump that discharges that the filter of oil filter filters is sent back to in the oil tank.

7. A lift sump for electrical discharge machining according to claim 1, wherein: an oil receiving chassis is arranged on the base and below the lifting oil groove.

8. An electric discharge machine characterized by: the oil groove for electric discharge machining comprises the lifting oil groove for electric discharge machining according to claim 1, wherein a middle seat is arranged at the rear end of the base, a multi-axis motion mechanism is mounted on the middle seat, a machining assembly is mounted on the multi-axis motion mechanism, and the multi-axis motion mechanism can drive the machining assembly to move in a three-dimensional space.

9. An electric discharge machine according to claim 8, characterized in that: the multi-axis motion mechanism comprises an X-axis motion assembly, a y-axis motion assembly and a z-axis motion assembly, wherein the X-axis motion assembly is arranged on the middle seat, the y-axis motion assembly is arranged on the X-axis motion assembly, the z-axis motion assembly is fixed on the y-axis motion assembly, the machining assembly is arranged on the z-axis motion assembly, the X-axis motion assembly and the y-axis motion assembly are matched to enable the machining assembly to move in a plane parallel to the base, the z-axis motion assembly enables the machining assembly to move to a machining position, and the X-axis motion assembly and the y-axis motion assembly are matched to enable the machining assembly to move in a plane parallel to the workbench.

10. An electric discharge machine according to claim 9, characterized in that: the X-axis motion assembly, the Y-axis motion assembly and the Z-axis motion assembly respectively comprise linear modules, and each linear module comprises a ball screw, a linear guide rail and a servo motor.

Images