Electric spark machining tool of four-ox-head U-shaped structure

Abstract

The utility model discloses an electric spark machine tool with a four-ox-head U-shaped structure, which comprises a machine tool body, the upper surface of the machine tool body is fixedly connected with a stand column, and the middle position of the upper surface of the machine tool body is fixedly provided with a workbench; a plurality of X-direction saddle structures are fixedly connected to the stand column, Y-direction saddle structures are installed above the X-direction saddle structures respectively, spindle seats are arranged on the Y-direction saddle structures respectively, a spindle seat is arranged on one side of the ram, a spindle is installed in the spindle seat, and a spindle is arranged on the other side of the ram. The lower end of the main shaft is fixedly connected with an electrode mounting plate, and the lower end of the electrode mounting plate is fixedly connected with an electrode tip. The four shaft heads are used for machining at the same time, the clamping frequency and the debugging time in traditional machining are greatly reduced, the machining speed of the machine tool is high, a large number of production tasks can be rapidly completed, the production time is effectively saved, and meanwhile automatic and intelligent production operation can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric spark machining, in particular to an electric spark machining machine tool with a four-bullhead U-shaped structure. Background Art

[0002] Bullhead EDM machines, as highly efficient and high-quality processing equipment, are widely used across various industrial production fields. They utilize advanced CNC technology to achieve automated and intelligent production operations, significantly reducing processing time and labor costs and improving production efficiency. Compared to traditional machining, Bullhead EDM machines offer higher efficiency and can quickly complete the machining of complex shapes. Furthermore, the use of precise CNC technology enables high-precision machining, effectively guaranteeing machining quality. Furthermore, Bullhead EDM machines offer stable discharge effects and a reliable control system, eliminating errors and quality instability associated with manual operations. Products processed using Bullhead EDM machines are of stable and reliable quality, meeting various high-quality requirements.

[0003] Currently, machine tools and systems are developing rapidly. High speed, high precision, composite design, openness, parallel drive, and environmental friendliness have become key future development trends for high-end machine tools. Bullhead EDM machines also align with this trend, utilizing a U-axis (with an internal spindle motor) that achieves a maximum spindle speed of 25 rpm, an indexing accuracy of ±0.006°, and the ability to precisely machine complex surfaces. The rapid development of microprocessors has enabled the advancement of high-speed and high-precision CNC systems. CPUs have evolved into 32-bit and 64-bit CNC systems, with frequencies reaching hundreds of megahertz and even gigahertz. These technological advances have enabled accuracy of up to ±0.006° to be achieved at resolutions of 0.1μm and 0.01μm. However, with existing technology, interference between the four axes is inevitable during normal operation. The interplay of the four axes can cause interference between machine tool components or electrodes and the workpiece, potentially leading to positioning errors that affect machining accuracy and surface quality.

[0004] Therefore, it is urgent to provide an EDM machine tool with a four-bullhead U-shaped structure to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by the present invention is that the mutual movement of axes may cause interference between machine tool components or electrodes and workpieces, and may also cause positioning errors.

[0006] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide an electric discharge machining machine with a four-bullhead U-shaped structure, including a machine bed, a column is fixedly connected to the upper surface of the machine bed, and a workbench is fixedly installed at the middle position of the upper surface of the machine bed; multiple groups of X-direction saddle structures are fixedly connected to the columns, and Y-direction saddle structures are respectively installed above the multiple groups of X-direction saddle structures, and slides are respectively provided on the multiple groups of Y-direction saddle structures. A spindle seat is provided on one side of the slide, and a spindle is installed in the spindle seat. The lower end of the spindle is fixedly connected to an electrode mounting plate, and the lower end of the electrode mounting plate is fixedly connected to an electrode head.

[0007] Through the above technical solution, the machine tool bed, column, slide and worktable are mainly used to support and fix the tool electrode and workpiece, so as to realize stable servo feed movement of the electrode head during the processing. The four spindle heads adopt a U-shaped structure design, with one on each side of the column and one on each side of the inner side of the column. It can cover the entire area of ​​the workpiece on the worktable for full-area processing operations without dead angles. In addition, the column has a one-stage structure, the spindle is more rigid, and heavy-load electrode processing is easy and comfortable.

[0008] The utility model is further configured as follows: the X-axis saddle structure includes a first motor fixedly connected to the column, the output end of the first motor is fixedly connected to a first screw rod, the first screw rod is threadedly connected to a linear rail, the lower end of the linear rail is fixedly connected to the first saddle, the lower end of the first saddle is slidably connected to the first fixed rail, and the lower surface of the first fixed rail is fixedly connected to the column.

[0009] Through the above technical solution, the ram can move in the Y direction or in the X and Y directions through the saddle structure. The advantage of this moving structure is that it is very convenient to load, unload and inspect workpieces.

[0010] The utility model is further configured as follows: the X-axis saddle structure includes a saddle fixedly connected to the linear rail, the upper end of the saddle is fixedly connected to a second motor, the output end of the second motor is fixedly connected to a second screw rod, the second screw rod is threadedly connected to a ram, the lower end of the ram is fixedly connected to the second saddle, the lower end of the second saddle is slidably connected to a second fixed rail, and the lower surface of the second fixed rail is fixedly connected to the column.

[0011] The utility model is further configured as follows: the spindle includes a third motor fixedly connected to one side of the spindle seat, the output end of the third motor is fixedly connected to a third screw rod, the third screw rod is threadedly connected to the spindle seat, the lower end of the spindle seat is fixedly connected to a third slide, the lower end of the third slide is slidably connected to a third fixed rail, and the lower surface of the third fixed rail is fixedly connected to one side of the column.

[0012] The utility model is further configured as follows: a working liquid tank is arranged in an area enclosed between the columns and the workbench, an oil tank oil supply channel and an oil tank oil return channel are arranged between the columns, and an oil tank switch door mechanism is arranged at the front end of the columns on both sides.

[0013] Through the above technical solution, the main functions of the working fluid include compressing the spark channel during discharge so that the current can be concentrated in a small local area; it can eliminate ionization in time after discharge and restore the insulation state to prevent the generation of arcs; at the same time, it can also cool the tools and workpieces.

[0014] The beneficial effects of the utility model are as follows:

[0015] 1. This utility model uses advanced numerical control technology to perform automated and intelligent production operations. During the processing, it can greatly reduce processing time and labor costs and improve production efficiency. Compared with traditional mechanical processing, this machine tool has higher processing efficiency. Four heads can process simultaneously and can quickly complete the processing of complex shapes. At the same time, this machine tool adopts precise numerical control technology to achieve high-precision processing and effectively ensure processing quality. In addition, it also has a stable discharge effect and a reliable control system, which can avoid errors and quality instability in manual operations. The quality of products processed by this machine tool is stable and reliable and can meet various high-quality requirements;

[0016] 2. The utility model greatly reduces the number of clamping and debugging time in traditional mechanical processing through simultaneous processing with a four-axis head. The machine tool has a fast processing speed and can quickly complete a large number of production tasks, effectively saving production time. At the same time, it can realize automated and intelligent production operations. During the production process, only a small number of technicians are required for operation and maintenance, which greatly reduces labor costs. In addition, the maintenance cost of the machine tool is low, which reduces repair and maintenance costs and can save a lot of costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0018] Figure 2 It is a front view of the utility model;

[0019] Figure 3 This is the internal structure diagram of the utility model;

[0020] Figure 4 It is a three-dimensional structural diagram of the spindle head of the utility model.

[0021] In the figure: 1. Machine tool bed; 11. Workbench; 12. Working fluid tank; 13. Column; 2. Y-axis saddle structure; 21. First motor; 22. First screw; 23. First fixed rail; 24. First saddle; 25. Linear rail; 3. X-axis saddle structure; 31. Second motor; 32. Second screw; 33. Saddle; 34. Second fixed rail; 35. Second saddle; 4. Ram; 5. Spindle; 51. Third motor; 52. Third fixed rail; 53. Third ram; 54. Third screw; 6. Spindle seat; 61. Electrode mounting plate. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0023] See also Figures 1-4 A four-head U-shaped EDM machine tool includes a machine bed 1, a column 13 is fixedly connected to the upper surface of the machine bed 1, and a workbench 11 is fixedly installed in the middle position of the upper surface of the machine bed 1; multiple groups of X-direction saddle structures 2 are fixedly connected to the columns 13, and Y-direction saddle structures 3 are respectively installed above the multiple groups of X-direction saddle structures 2, and slides 4 are respectively provided on the multiple groups of Y-direction saddle structures 3. A spindle seat 6 is provided on one side of the slide ram 4, and a spindle 5 is installed in the spindle seat 6. The lower end of the spindle 5 is fixed It is fixedly connected to an electrode mounting plate 61, and an electrode head is fixedly connected to the lower end of the electrode mounting plate 61; the machine tool bed 1, column 13, slide 4 and workbench 11 are mainly used to support and fix the tool electrode and workpiece, so as to realize stable servo feed movement of the electrode mounting plate 61 during the processing. The four spindle heads adopt a U-shaped structure design, with one on each side of the left and right sides of the column 13, and one on each side of the inner side of the column 13, which can cover the entire area of ​​the workpiece on the workbench 11 for full-area processing operations without any processing dead angles.

[0024] The Y-direction saddle structure 2 includes a first motor 21 fixedly connected to the column 13, the output end of the first motor 21 is fixedly connected to a first screw rod 22, the first screw rod 22 is threadedly connected to a linear rail 25, the lower end of the linear rail 25 is fixedly connected to a first saddle 24, the lower end of the first saddle 24 is slidably connected to a first fixed rail 23, and the lower surface of the first fixed rail 23 is fixedly connected to the column 13.

[0025] The X-direction saddle structure 3 includes a saddle 33 fixedly connected to the linear rail 25, the upper end of the saddle 33 is fixedly connected to the second motor 31, the output end of the second motor 31 is fixedly connected to the second screw rod 32, the second screw rod 32 is threadedly connected to the ram 4, the lower end of the ram 4 is fixedly connected to the second saddle 35, the lower end of the second saddle 35 is slidably connected to the second fixed rail 34, and the lower surface of the second fixed rail 34 is fixedly connected to the saddle 33.

[0026] The main shaft 5 includes a third motor 51 fixedly connected to one side of the slide 4, the output end of the third motor 51 is fixedly connected to the third screw rod 54, the third screw rod 54 is threadedly connected to the main shaft seat 6, the lower end of the main shaft seat 6 is fixedly connected to the third slide 53, the lower end of the third slide 53 is slidably connected to the third fixed rail 52, and the lower surface of the third fixed rail 52 is fixedly connected to one side of the slide 4.

[0027] A working fluid tank 12 is set up in the area enclosed between the columns 13 and the workbench 11, and an oil tank oil supply channel and an oil tank oil return channel are arranged between the columns 13. An oil tank switch door mechanism is set up at the front end of the columns 13 on both sides; the main functions of the working fluid include compressing the spark channel during discharge so that the current can be concentrated in a small local area; after discharge, it must be able to eliminate ionization in time and restore the insulation state to prevent arcing; at the same time, it can also cool the tools and workpieces.

[0028] When the present invention is in use, the machine tool bed 1, the column 13, the ram 4 and the worktable 11 are mainly used to support and fix the tool electrode and the workpiece, so as to realize the stable servo feed movement of the electrode mounting plate 61 during the processing. The machine tool bed 1 and the column 13 serve as the basic structure to ensure the relative position between the electrode mounting plate 61, the worktable 11 and the workpiece, and its accuracy has a direct impact on the processing. The ram 4 realizes Y-direction movement or X, Y-direction movement through the ram structure. The advantage of this mobile structure is that it is very convenient to load and unload and detect the workpiece.

[0029] The above are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An electrospark machining machine with a four-head U-shaped structure, comprising a machine bed (1), characterized in that: A column (13) is fixedly connected to the upper surface of the machine tool bed (1), and a workbench (11) is fixedly installed at a middle position of the upper surface of the machine tool bed (1); A plurality of groups of X-direction saddle structures (2) are fixedly connected to the columns (13), a plurality of groups of Y-direction saddle structures (3) are installed above the plurality of groups of X-direction saddle structures (2), a plurality of groups of Y-direction saddle structures (3) are provided with rams (4), a spindle seat (6) is provided on one side of the ram (4), a spindle (5) is installed in the spindle seat (6), an electrode mounting plate (61) is fixedly connected to the lower end of the spindle (5), and an electrode head is fixedly connected to the lower end of the electrode mounting plate (61).

2. The four-head U-shaped EDM machine tool according to claim 1, characterized in that: The X-axis saddle structure (2) includes a first motor (21) fixedly connected to a column (13); an output end of the first motor (21) is fixedly connected to a first screw rod (22); a linear rail (25) is threadedly connected to the first screw rod (22); an upper end of the linear rail (25) is fixedly connected to a first saddle (24); a lower end of the first saddle (24) is slidably connected to a first fixed rail (23); and a lower surface of the first fixed rail (23) is fixedly connected to the column (13).

3. The four-head U-shaped EDM machine tool according to claim 2, characterized in that: The X-axis saddle structure (3) includes a saddle (33) fixedly connected to the linear rail (25), the upper end of the saddle (33) is fixedly connected to a second motor (31), the output end of the second motor (31) is fixedly connected to a second screw rod (32), the second screw rod (32) is threadedly connected to a ram (4), the lower end of the ram (4) is fixedly connected to a second saddle (35), the lower end of the second saddle (35) is slidably connected to a second fixed rail (34), and the lower surface of the second fixed rail (34) is fixedly connected to the column (13).

4. The four-head U-shaped EDM machine tool according to claim 1, characterized in that: The main shaft (5) includes a third motor (51) fixedly connected to one side of the ram (4); the output end of the third motor (51) is fixedly connected to a third screw rod (54); the third screw rod (54) is threadedly connected to a main shaft seat (6); the lower end of the main shaft seat (6) is fixedly connected to a third ram (53); the lower end of the third ram (53) is slidably connected to a third fixed rail (52); the lower surface of the third fixed rail (52) is fixedly connected to one side of the column (13).

5. The four-head U-shaped EDM machine tool according to claim 1, characterized in that: A working liquid tank (12) is arranged in an area enclosed between the columns (13) and the workbench (11), an oil tank oil supply channel and an oil tank oil return channel are arranged between the columns (13), and an oil tank opening and closing door mechanism is arranged at the front ends of the columns (13) on both sides.

Images