Six-ox-head electric spark forming machine tool

Abstract

Fixing seats are symmetrically arranged at the outer ends of the two sides of an oil storage cooling and heat dissipation mechanism, three rams are arranged on the upper surfaces of the two fixing seats through linear guide rails, and the ends, close to the oil storage cooling and heat dissipation mechanism, of the rams are provided with ox heads; the oil storage cooling and heat dissipation mechanism comprises an oil groove, partition plates and baffles, a workbench is arranged in the oil groove, cavities are formed in the side walls of the two sides of the oil groove, the inner wall of the oil groove is open, the partition plates and the baffles are installed on the inner wall of the oil groove, and heat dissipation holes are densely distributed in the upper portion of the oil groove. The tool is reasonable in structure, cooling oil returns to the oil storage tank through the oil return tooth grooves and the oil return openings in the lower portions of the oil grooves, heat generated when six ox heads are machined at the same time enters the cavities in the two sides of the oil grooves through the heat dissipation holes and is exhausted through the exhaust connectors, the heat generated when the ox heads are machined in the oil grooves is greatly reduced, and machining efficiency is improved. Therefore, the safety and the service life of the cow head are ensured.

Description

Technical Field

[0001] The utility model relates to the field of machinery, in particular to a numerically controlled electric discharge machining equipment, specifically a six-bullhead electric discharge forming machine tool. Background Art

[0002] An electric discharge machine tool, also known as a numerically controlled electric discharge machine tool, electric discharge machine, or spark machine, is an electro-machining equipment. When the Soviet couple Lazarenko studied the phenomenon and cause of the damage of switch contacts by spark discharge corrosion, they found that the instantaneous high temperature of the electric spark could melt and oxidize the local metal and corrode it, thus pioneering and inventing the electric discharge machining method.

[0003] After that, single-bullhead and double-bullhead electric discharge machining machine tools have been widely used. In order to further improve the efficiency or cooperate with special workpieces for machining, multi-bullhead electric discharge forming machine tools have been proposed in the prior art. However, for a six-bullhead electric discharge forming machine tool, due to the large number of bullheads, when six bullheads are started for machining simultaneously, a relatively high amount of heat will be generated in the oil tank. Currently, only the cooling oil is used for temperature reduction, and it is difficult to quickly discharge the heat, which will affect the service life of the bullheads. Therefore, an improved technology is urgently needed to solve the above problems existing in the prior art. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a six-bullhead electric discharge forming machine tool. On both sides of the oil tank, the inner wall of the side wall forms a cavity through a partition plate and a baffle. Heat dissipation holes are provided in the upper part of the partition plate, and an oil return tooth groove is provided at the bottom of the partition plate. The cooling oil returns to the oil storage tank through the oil return tooth groove and the oil return port at the lower part of the oil tank respectively. When six bullheads are machining simultaneously, the heat generated enters the cavities on both sides of the oil tank through the heat dissipation holes and is discharged through the exhaust interface, greatly reducing the heat during machining in the oil tank, thereby ensuring safety and the service life of the bullheads, so as to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A six-bullhead electric discharge forming machine tool, including an oil storage, cooling and heat dissipation mechanism, a workbench, a fixed seat, a ram, and bullheads. Symmetrically arranged at the outer ends on both sides of the oil storage, cooling and heat dissipation mechanism are fixed seats. On the upper surfaces of the two fixed seats, three rams are arranged through linear guide rails. An X-axis linear motor stator is also arranged on the upper surface of the fixed seat. The lower surfaces of the rams are respectively matched with the X-axis linear motor stator through linear motor rotors. Bullheads are arranged at one end of each ram close to the oil storage, cooling and heat dissipation mechanism.

[0006] The oil storage, cooling and heat dissipation mechanism includes an oil tank, a partition board and a baffle. A workbench is arranged in the oil tank. The inner sides of the side walls on both sides of the oil tank are provided with cavities. The inner wall of the oil tank is open and is composed of a number of partition boards and baffles. The upper part of the partition board is densely distributed with heat dissipation holes, and the bottom of the partition board is provided with an oil return tooth groove. The upper part of one end of the side wall of the oil tank is provided with an exhaust interface, and the exhaust interface is communicated with the cavity inside the side wall of the oil tank. Three oil return ports are respectively arranged on both sides of the oil tank and at the lower part of the cavity.

[0007] Preferably, in a six - bull - head electric discharge machining machine provided by the present utility model, lifting doors are further arranged at both ends of the oil tank and between the side walls.

[0008] Preferably, in a six - bull - head electric discharge machining machine provided by the present utility model, the bull - head includes a longitudinal sleeve, a Z - axis main shaft, an electrode and a Y - axis telescopic arm. The Z - axis main shaft is movably arranged in the longitudinal sleeve through the cooperation of a motor and a lead screw. An electrode is arranged at the bottom of the Z - axis main shaft. A Y - axis telescopic arm is further arranged on one side of the longitudinal sleeve. The ram is provided with an inner cavity, and the Y - axis telescopic arm is movably connected with the inner cavity of the ram through a linear motor.

[0009] Preferably, in a six - bull - head electric discharge machining machine provided by the present utility model, a number of longitudinal support plates are arranged in the cavity of the oil tank and on the inner side. Both sides of the partition board and the baffle are connected to the longitudinal support plates through bolts, and the tops of the partition board and the baffle are connected to the upper part of the side wall of the oil tank through bolts.

[0010] Preferably, in a six - bull - head electric discharge machining machine provided by the present utility model, three oil storage tanks are respectively arranged on the outer sides of the fixed seats.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] On both sides of the oil tank, the inner wall of the side wall forms a cavity through the partition board and the baffle. The upper part of the partition board is provided with heat dissipation holes, and the bottom of the partition board is provided with an oil return tooth groove. The cooling oil returns to the oil storage tank respectively through the oil return tooth groove and the oil return ports at the lower part of the oil tank. The heat generated during the simultaneous machining of the six bull - heads enters the cavities on both sides of the oil tank through the heat dissipation holes and is discharged through the exhaust interface, greatly reducing the heat during machining in the oil tank, thereby ensuring safety and the service life of the bull - head. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the present utility model;

[0014] Figure 2 is a schematic cross - sectional structural diagram of the front view of the oil tank;

[0015] Figure 3Schematic diagram of the inner surface of the side wall of the oil tank;

[0016] Figure 4 Schematic diagram of the bull head structure.

[0017] In the figure: workbench 1, fixed seat 2, ram 3, bull head 4, linear guide 5, X-axis linear motor stator 6, oil tank 7, partition plate 8, baffle plate 9, heat dissipation holes 10, oil return tooth grooves 11, exhaust interface 12, oil return port 13, lifting door 14, longitudinal support plate 15, oil storage tank 16, longitudinal sleeve 401, Z-axis main shaft 402, electrode 403, Y-axis telescopic arm 404. Specific embodiments

[0018] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments and drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work shall fall within the scope of protection of the present invention;

[0019] It should be noted that in the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "inner", "outer", "upper", "lower", "both sides", "one end", "the other end", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0020] Please refer to Figures 1 - 3 , the present invention provides a technical solution: a six-bull-head electric discharge forming machine tool, including an oil storage, cooling and heat dissipation mechanism, a workbench 1, a fixed seat 2, a ram 3 and a bull head 4. Fixed seats 2 are symmetrically arranged at the outer ends on both sides of the oil storage, cooling and heat dissipation mechanism. Three rams 3 are arranged on the upper surfaces of the two fixed seats 2 through linear guides 5. An X-axis linear motor stator 6 is also arranged on the upper surface of the fixed seat 2. The lower surfaces of the rams 3 are all matched with the X-axis linear motor stator 6 through linear motor rotors. Bull heads 4 are arranged at one end of each ram 3 close to the oil storage, cooling and heat dissipation mechanism. Three oil storage tanks 16 are arranged on the outside of each fixed seat 2 to realize the delivery and recovery of cooling oil;

[0021] The oil storage, cooling and heat dissipation mechanism includes an oil tank 7, a partition board 8 and a baffle 9. A workbench 1 is arranged in the oil tank 7. Lifting doors 14 are also arranged at both ends of the oil tank 7 and between the side walls. The workpiece can be placed and taken out through the lifting doors 8. The inner parts of the side walls on both sides of the oil tank 7 are set as cavities. The inner wall of the oil tank 7 is open and is installed with a number of partition boards 8 and baffles 9. The upper part of the partition board 8 is densely distributed with heat dissipation holes 10. The bottom of the partition board 8 is provided with an oil return tooth groove 11. An exhaust interface 12 is opened at the upper part of one end of the side wall of the oil tank 7. The exhaust interface 12 is communicated with the cavity inside the side wall of the oil tank 7. Three oil return ports 13 are respectively arranged at the lower part of the cavities on both sides of the oil tank 7. A number of longitudinal support plates 15 are arranged on the inner side in the cavity of the oil tank 7. Both sides of the partition board 8 and the baffle 9 are also connected to the longitudinal support plates 15 through bolts. The tops of the partition board 8 and the baffle 9 are connected to the upper part of the side wall of the oil tank 7 through bolts. Through the support plates 15, on the one hand, the installation of the partition board 8 and the baffle 9 is realized, and on the other hand, the support of the side wall of the oil tank 7 is ensured.

[0022] As Figure 4 shown, the bull head 4 includes a longitudinal sleeve 401, a Z-axis main shaft 402, an electrode 403 and a Y-axis telescopic arm 404. The Z-axis main shaft 402 is movably arranged in the longitudinal sleeve 401 through the cooperation of a motor and a lead screw. An electrode 403 is arranged at the bottom of the Z-axis main shaft 402. A Y-axis telescopic arm 404 is also arranged on one side of the longitudinal sleeve 401. The ram 3 is provided with an inner cavity. The Y-axis telescopic arm 404 is movably connected to the inner cavity of the ram 3 through a linear motor. The telescoping of the bull head 4 is realized through the linear motor. Through the cooperation of the motor and the lead screw, the Z-axis main shaft 402 is moved along the longitudinal sleeve 401, so as to realize the adjustment of the height of the electrode 403.

[0023] Installation method and working principle: First, the isolation plate 8 and the baffle 9 are respectively connected to the support plate by bolts and installed on the inner wall of the oil tank 7. At this time, the oil return tooth groove 11 at the bottom of the isolation plate 8 supports on the bottom of the oil tank 7. Then, the ram 3 with the bull head 4 is connected to the linear guide 5 on the upper surface of the fixed seat 2. At the same time, the bottom of the ram 3 is matched with the X-axis linear motor stator 6 on the upper surface of the fixed seat 2 through the linear motor mover, so as to realize the movement of the ram 3 along the linear guide 5. Before use, one end of the heat dissipation pipe is connected to the air extraction pump, and the other end of the heat dissipation pipe is connected to the exhaust interface 12 at the upper part of the oil tank 7. The storage oil tank 16 is connected to the nozzle through an oil pump. The nozzle is connected to the electrode 403 of the bull head 4 in a matching manner. The storage oil tank 16 is also connected to the oil return port 13 of the oil tank 7 through an oil return pipe. When six bull heads 4 are used for processing at the same time, the heat in the oil tank 7 is relatively high. The heat is drawn into the cavity on the side wall of the oil tank 7 through the heat dissipation holes 10 of the isolation plate 8, and then discharged through the exhaust interface 12. The structure of the utility model is reasonable. The two sides of the oil tank 7 form a cavity on the inner wall of the side wall through the isolation plate 8 and the baffle 9. The upper part of the isolation plate 8 is provided with heat dissipation holes 10, and the bottom of the isolation plate 8 is provided with oil return tooth grooves 11. The cooling oil returns to the storage oil tank 16 through the oil return tooth grooves 11 and the oil return port 13 at the lower part of the oil tank 7 respectively. The heat generated when six bull heads 4 are processed at the same time enters the cavities on both sides of the oil tank 7 through the heat dissipation holes 10 and is discharged through the exhaust interface 12, greatly reducing the heat during processing in the oil tank 7, thereby ensuring safety and the service life of the bull head 4.

[0024] For the parts not detailed in the present utility model, they are all well-known technologies to those skilled in the art.

[0025] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present utility model rather than to limit them. Although the present utility model has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified and equivalently replaced without departing from the spirit and scope of the technical solutions of the present utility model, and they should all be covered within the scope of the claims of the present utility model.

Claims

1. A six - ram electric discharge machining machine, characterized in that: It includes an oil storage, cooling and heat dissipation mechanism, a workbench (1), a fixed seat (2), a ram (3) and a bull head (4). Symmetrically arranged at the outer ends on both sides of the oil storage, cooling and heat dissipation mechanism are fixed seats (2). On the upper surfaces of the two fixed seats (2), three rams (3) are arranged through linear guides (5). On the upper surface of the fixed seat (2), an X-axis linear motor stator (6) is also arranged. The lower surfaces of the rams (3) are all matched with the X-axis linear motor stator (6) through linear motor rotors. At one end of the ram (3) close to the oil storage, cooling and heat dissipation mechanism, a bull head (4) is arranged at each end. The oil storage, cooling and heat dissipation mechanism includes an oil tank (7), a partition plate (8) and a baffle (9). The workbench (1) is arranged in the oil tank (7). The inner sides of the side walls on both sides of the oil tank (7) are cavities. The inner wall of the oil tank (7) is open and is equipped with a number of partition plates (8) and baffles (9). The upper part of the partition plate (8) is densely distributed with heat dissipation holes (10). An oil return tooth groove (11) is opened at the bottom of the partition plate (8). An exhaust air interface (12) is opened at the upper part of one end of the side wall of the oil tank (7). The exhaust air interface (12) is communicated with the cavity inside the side wall of the oil tank (7). Three oil return ports (13) are arranged at the lower part of the cavity on both sides of the oil tank (7).

2. The six-head electro-discharge machining machine tool according to claim 1, wherein: Lifting doors (14) are also arranged at both ends of the oil tank (7) and between the side walls.

3. A six-head electro-discharge machining machine according to claim 1, characterized in that: The bull head (4) includes a longitudinal sleeve (401), a Z-axis main shaft (402), an electrode (403) and a Y-axis telescopic arm (404). The Z-axis main shaft (402) is movably arranged in the longitudinal sleeve (401) through the cooperation of a motor and a lead screw. An electrode (403) is arranged at the bottom of the Z-axis main shaft (402). A Y-axis telescopic arm (404) is also arranged on one side of the longitudinal sleeve (401). The ram (3) is provided with an inner cavity. The Y-axis telescopic arm (404) is movably connected with the inner cavity of the ram (3) through a linear motor.

4. A six - ram electric discharge machining machine according to claim 1, characterized in that: A number of longitudinal support plates (15) are arranged on the inner side in the cavity of the oil tank (7). The two sides of the partition plate (8) and the baffle (9) are also connected to the longitudinal support plates (15) through bolts. The tops of the partition plate (8) and the baffle (9) are connected to the upper part of the side wall of the oil tank (7) through bolts.

5. A six-head electro-discharge machining machine according to claim 1, characterized in that: Three oil storage tanks (16) are arranged on the outer side of each fixed seat (2).

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