An eccentric multi-axis electric spark small hole machine tool

Abstract

An eccentric multi-axis electric spark small hole machine tool comprises a bed, which includes a crossbeam and a longitudinal beam; a Y-axis slide is provided on the top of the longitudinal beam, and a rotary table is provided on the top of the Y-axis slide, and the rotary table can rotate around a vertical rotation axis; a column is provided on the top of the crossbeam, and an X-axis slide is provided on the top of the column, and the X-axis slide can move horizontally along an X-axis direction on the top surface of the column, and the X-axis direction is perpendicular to the Y-axis direction; a spindle seat is provided on one end of the X-axis slide facing the longitudinal beam, and a Z-axis slide is provided on the spindle seat towards one end of the longitudinal beam, and the Z-axis slide can move vertically on the spindle seat along a Z-axis direction, and the Z-axis direction is perpendicular to the Y-axis direction; a spindle turntable is provided below the Z-axis slide, and a servo axis is provided on the spindle turntable towards one end of the longitudinal beam, and the servo axis can rotate around a rotation axis parallel to the Y-axis direction; a rotating axis is installed on the servo axis, and the rotating axis can slide on the servo axis.

Description

Technical Field

[0001] The invention belongs to the technical field of machining machine tools, in particular to an eccentric multi-axis electric spark small hole machine tool. Background Art

[0002] Currently, existing EDM machines for small holes mostly use a cross-table or fixed-table structure, all of which are symmetrical in design. These structures have the following disadvantages: First, the movement of the X-axis and Y-axis affects the accuracy of each other, making it impossible to meet the high-precision machining requirements for small hole parts; second, machining large parts requires a machine tool with a long travel range, which increases processing costs. Summary of the Invention

[0003] In view of the above problems, the purpose of the present invention is to provide an eccentric multi-axis electric spark small hole machine tool, which has high processing accuracy and small size, and effectively improves the application range of the machine tool.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] An eccentric multi-axis electric spark small hole machine tool, including a bed, the bed is T-shaped, including a crossbeam and a longitudinal beam perpendicular to each other; the two ends of the crossbeam are respectively a first end and a second end, the end of the longitudinal beam is fixedly connected to the side of the crossbeam, and the distance between the longitudinal beam and the first end is greater than the distance between the longitudinal beam and the second end; a Y-axis slide is provided on the top of the longitudinal beam, and the Y-axis slide can move horizontally along a Y-axis direction on the top surface of the longitudinal beam; a rotary table is provided on the top of the Y-axis slide, and the rotary table can rotate around a vertical axis; a column is provided on the top of the crossbeam, and an X-axis is provided on the top of the column A slide, the X-axis slide can move horizontally along an X-axis direction on the top surface of the column, and the X-axis direction is perpendicular to the Y-axis direction; the X-axis slide is provided with a spindle seat at one end facing the longitudinal beam, and the spindle seat is provided with a Z-axis slide at one end facing the longitudinal beam, and the Z-axis slide can move vertically along a Z-axis direction on the spindle seat, and the Z-axis direction is perpendicular to the Y-axis direction; a spindle turntable is provided below the Z-axis slide, and the spindle turntable is provided with a servo axis at one end facing the longitudinal beam, and the servo axis can rotate around a rotating axis parallel to the Y-axis direction; a rotating axis is installed on the servo axis, and the rotating axis can slide on the servo axis.

[0006] Furthermore, the X-axis slide is provided with a counterweight bracket at one end away from the longitudinal beam, and a counterweight block that can slide vertically along the counterweight bracket is provided on the side of the counterweight bracket; the top of the X-axis slide is provided with a rear pulley bracket, and the rear pulley is provided on the rear pulley; the top of the main shaft seat is provided with a front pulley bracket, and the front pulley bracket is provided with a front pulley; the top of the Z-axis slide is provided with a steel wire rope, which passes around the front pulley and the rear pulley in turn, and the end is fixed to the top of the counterweight block.

[0007] Furthermore, the Y-axis slide, the X-axis slide, and the Z-axis slide are respectively connected to driving devices.

[0008] Furthermore, the top surface of the longitudinal beam is provided with a first track corresponding to the Y-axis slide; the top surface of the column is provided with a second track corresponding to the X-axis slide; and the side surface of the spindle seat is provided with a third track corresponding to the Z-axis slide.

[0009] Furthermore, the circular plane formed when the servo shaft rotates is the servo plane, and the sliding direction of the rotating shaft is the radial direction of the servo plane.

[0010] The beneficial effects of the present invention are as follows: the eccentric multi-axis EDM small-hole machine tool of the present invention has an independently set Y-axis, the precision of the X-axis and the Y-axis do not affect each other, and the spindle overhang is short, so that the machine tool obtains higher precision; in addition, its bed is an asymmetric T-shaped structure, and the front end of the bed is offset to one side, which meets the processing requirements of some large angled parts within the limited X-axis stroke, avoids the use of a machine tool with an ultra-large stroke, and effectively improves the applicability of the machine tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the eccentric multi-axis electric spark small hole machine tool of the present invention.

[0012] Figure 2 It is a top view of the eccentric multi-axis electric spark small hole machine tool of the present invention. DETAILED DESCRIPTION

[0013] The structure of the present invention and the technical effects to be achieved will be described below with reference to specific embodiments and accompanying drawings. However, the selected embodiments are only used for illustration and explanation and are not intended to limit the scope of the present invention.

[0014] like Figure 1 、 Figure 2As shown, the present invention provides an eccentric multi-axis electric spark small hole machine tool, including a bed 1, which is T-shaped and includes a crossbeam 11 and a longitudinal beam 12 that are perpendicular to each other. The shape of the bed 1 is asymmetrical, and the two ends of the crossbeam 11 are respectively a first end 111 and a second end 112. The end of the longitudinal beam 12 is fixedly connected to the side of the crossbeam 11, and the distance between the longitudinal beam 12 and the first end 111 is greater than the distance between the longitudinal beam 12 and the second end 112. A Y-axis slide 2 is provided on the top of the longitudinal beam 12, and the Y-axis slide 2 can move horizontally along a Y-axis direction on the top surface of the longitudinal beam 12. A rotary table 21 is provided on the top of the Y-axis slide 2, and the rotary table 21 can rotate around a vertical rotation axis. A column 3 is provided on the top of the crossbeam 11, and an X-axis slide 4 is provided on the top of the column 3. The X-axis slide 4 can move horizontally along an X-axis direction on the top surface of the column 3, and the X-axis direction is perpendicular to the Y-axis direction. The X-axis slide 4 is provided with a spindle seat 41 at one end facing the longitudinal beam 12, and the spindle seat 41 is provided with a Z-axis slide 5 at one end facing the longitudinal beam 12. The Z-axis slide 5 can move vertically along a Z-axis direction on the spindle seat 41, and the Z-axis direction is perpendicular to the Y-axis direction. A spindle turntable 51 is provided below the Z-axis slide 5, and a servo shaft 6 is provided on the spindle turntable 51 at one end facing the longitudinal beam 12. The servo shaft 6 can rotate around a rotating shaft parallel to the Y-axis direction. A rotating shaft 61 is installed on the servo shaft 6, and the rotating shaft 61 can slide on the servo shaft 6. The circular plane formed when the servo shaft 6 rotates is the servo plane, and the sliding direction of the rotating shaft 61 is the radial direction of the servo plane.

[0015] When processing small hole parts, the workpiece is clamped on the rotary table 21 and the electrode wire is installed on the rotating shaft 61. The rotation of the rotary table 21 and the swing of the spindle turntable 51 can realize the processing of small hole parts with complex spatial positions.

[0016] Specifically, the Y-axis slide 2, the X-axis slide 4, and the Z-axis slide 5 are each connected to a drive device. The top surface of the longitudinal beam 12 is provided with a first track 121 corresponding to the Y-axis slide 2. The top surface of the column 3 is provided with a second track 31 corresponding to the X-axis slide 4. The side surface of the spindle seat 41 is provided with a third track 411 corresponding to the Z-axis slide 5.

[0017] To ensure smooth operation, the X-axis slide 4 is equipped with a counterweight bracket 7 at the end away from the longitudinal beam 12. A counterweight block 71 is installed on the side of the counterweight bracket 7, which can slide vertically along the counterweight bracket 7. A rear pulley bracket 8 is installed on the top of the X-axis slide 4, and a rear pulley 81 is installed on the rear pulley bracket 8. A front pulley bracket 9 is installed on the top of the spindle seat 41, and a front pulley 91 is installed on the front pulley bracket 9. A steel wire rope 52 is installed on the top of the Z-axis slide 5. The steel wire rope 52 passes through the front pulley 91 and the rear pulley 81 in sequence, and the end is fixed to the top of the counterweight block 71.

[0018] The advantages of the present invention lie in its asymmetric T-shaped bed structure, with the front end of the bed offset to one side. This allows the machining of large, angled parts within the limited X-axis travel, avoiding the need for machines with excessively long travels and effectively expanding the machine's applicability. Furthermore, compared to known cross-table and fixed-table small-hole machines, the present invention features an independent Y-axis (longitudinal beam), ensuring the X- and Y-axis accuracies are independent of each other, and the spindle has a shorter overhang, enabling the machine to achieve higher precision.

[0019] The present invention is defined by the claims, but those skilled in the art may make various obvious changes or modifications based on the claims, all of which are within the spirit and scope of the present invention.

Claims

1. An eccentric multi-axis electric spark small hole machine tool, characterized in that: The machine comprises a bed, which is T-shaped and includes a horizontal beam and a longitudinal beam perpendicular to each other; the two ends of the horizontal beam are respectively a first end and a second end, the end of the longitudinal beam is fixedly connected to the side of the horizontal beam, and the distance between the longitudinal beam and the first end is greater than the distance between the longitudinal beam and the second end; a Y-axis slide is provided on the top of the longitudinal beam, and the Y-axis slide can move horizontally along a Y-axis direction on the top surface of the longitudinal beam; a rotary table is provided on the top of the Y-axis slide, and the rotary table can rotate around a vertical axis; the horizontal beam is provided with a first end and a second end, and the longitudinal beam is fixedly connected to the side of the horizontal beam, and the distance between the longitudinal beam and the first end is greater than the distance between the longitudinal beam and the second end; a Y-axis slide is provided on the top of the longitudinal beam, and the Y-axis slide can move horizontally along a Y-axis direction on the top surface of the longitudinal beam; a rotary table is provided on the top of the Y-axis slide, and the rotary table can rotate around a vertical axis; A column is provided on the top of the beam, and an X-axis slide is provided on the top of the column. The X-axis slide can move horizontally along an X-axis direction on the top surface of the column, and the X-axis direction is perpendicular to the Y-axis direction; a spindle seat is provided on one end of the X-axis slide facing the longitudinal beam, and a Z-axis slide is provided on the one end of the spindle seat facing the longitudinal beam, and the Z-axis slide can move vertically on the spindle seat along a Z-axis direction, and the Z-axis direction is perpendicular to the Y-axis direction; a spindle turntable is provided below the Z-axis slide, and the spindle turntable faces one end of the longitudinal beam. A servo axis is provided at the end, which can rotate around a rotating axis parallel to the Y-axis direction; a rotating axis is installed on the servo axis, which can slide on the servo axis; a counterweight bracket is provided at the end of the X-axis slide away from the longitudinal beam, and a counterweight block is provided on the side of the counterweight bracket that can slide vertically along the counterweight bracket; a rear pulley bracket is provided on the top of the X-axis slide, and a rear pulley is provided on the rear pulley bracket; a front pulley bracket is provided on the top of the spindle seat, and a front pulley bracket is provided on the front pulley bracket; a steel wire rope is provided on the top of the Z-axis slide, which wire rope passes around the front pulley and the rear pulley in turn, and the end is fixed to the top of the counterweight block; the circular plane formed when the servo axis rotates is the servo plane, and the sliding direction of the rotating axis is the radial direction of the servo plane; the bed is an asymmetric T-shaped structure, and the front end of the bed is biased to one side, which meets the processing requirements of some large angled parts within the limited X-axis stroke, avoids the use of machine tools with ultra-large strokes, and effectively improves the applicability of machine tools.

2. The eccentric multi-axis electric spark small hole machine tool according to claim 1, characterized in that: The Y-axis slide, the X-axis slide, and the Z-axis slide are respectively connected to driving devices.

3. The eccentric multi-axis electric spark small hole machine tool according to claim 2, characterized in that: The top surface of the longitudinal beam is provided with a first track corresponding to the Y-axis slide; the top surface of the column is provided with a second track corresponding to the X-axis slide; the side surface of the spindle seat is provided with a third track corresponding to the Z-axis slide.

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