Low-voltage micro-arc deep hole machining guide device

Abstract

The utility model discloses a low-voltage micro-arc deep hole machining guide device which comprises a guide hole sleeve, an insulating bush, a ball head rod, a threaded rod, a universal joint rod and a base, and is characterized in that the base is provided with four sliding grooves and two threaded holes, the lower end of the universal joint rod is a sliding block with a through hole, and the upper end of the universal joint rod is a knuckle bearing wrapping a ball body; the lower end of the ball rod is a ball body, the upper end of the ball rod is a disc with sawteeth, the guide hole sleeve is provided with a lifting lug of the disc with sawteeth, the middle of the guide hole sleeve is a cylindrical through hole, and the insulating bush is matched with the guide hole sleeve for use; the base sliding groove and the sliding block at the lower end of the universal joint rod are clamped to move, so that the guide hole sleeve is suitable for machining requirements of different hole positions, and the universal joint rod and the ball rod enable the position of the guide hole sleeve to be more flexible through a spherical hinge structure. Insulating bushes with different inner hole sizes are embedded into the middle hole of the guide hole sleeve so as to be suitable for electrodes with different sizes.

Description

Technical Field

[0001] The invention relates to the technical field of low-pressure micro-arc machining, and in particular to a low-pressure micro-arc deep hole machining guide device. Background Art

[0002] Arc machining technology refers to an electrical machining method that uses an excited arc discharge group or a discharge group mixed with spark discharge generated between the electrode and the workpiece under the action of a mixed working medium with a certain gas-liquid ratio and pressure to erode metal or non-metal conductive materials. This technology is a non-contact machining technology that is not affected by the strength, hardness, toughness, and brittleness of the machining material. It has the advantages of high machining efficiency and low economic cost, so it is widely used in defense, metallurgy, aviation, aerospace and other fields.

[0003] At present, there are few studies on low-pressure micro-arc deep hole machining guide devices. The position of the guide hole of the EDM deep hole machining guide device is fixed according to the position of the hole of the workpiece, cannot move relatively, can only adapt to the processing needs of a single hole position, and the size of the guide hole is fixed, lacking flexibility and adaptability. Utility Model Content

[0004] The utility model aims to provide a low-pressure micro-arc deep hole machining guide device to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A low-pressure micro-arc deep hole processing guide device, including a guide hole sleeve, an insulating bushing, a positioning pin, a ball head rod, a fastening screw, a threaded rod, a horizontal bubble level, a universal joint rod, a bolt, a clamping block, a spring, a nut, and a base, wherein the base has four slide grooves and two threaded holes, the threaded rod has threads at the end, the clamping block has threaded holes, the universal joint rod has a slider with a through hole at the lower end, and a spherical bearing covering a sphere at the upper end, the ball head rod has a sphere at the lower end, and a serrated disc at the upper end, the guide hole sleeve has a lifting ear with a serrated disc, and the insulating bushing is an insulating High temperature resistant ceramic material, the slider at the lower end of the universal joint rod is restricted to move in the slide groove, the threaded rod and the threaded hole of the base are connected by threaded matching, the upper end of the universal joint rod is provided with a spherical bearing covering the sphere, the sphere at the lower end of the ball head rod is restricted in the spherical bearing covering the sphere, the fastening screw is assembled on the ear at the upper end of the universal joint rod, the upper end of the ball head rod and the ear of the guide hole sleeve are assembled through serration engagement, a horizontal bubble level is installed above the guide hole sleeve, the insulating bushing and the guide hole sleeve are interference fit, and the insulating bushing can be replaced according to the electrode diameter size.

[0007] Preferably, the bolt passes through the through hole of the slider and is screwed with the nut to achieve a tightening or loosening effect.

[0008] Preferably, the locating pin fastens the lugs of the ball head rod and the guide hole sleeve together, and the spring prevents the saw teeth from engaging the translation sliding teeth.

[0009] Preferably, the threaded rod and the clamping block are threadably matched, and the clamping block is removable and can be replaced according to the size and shape of the workpiece.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. The insulating bushing and the guide hole sleeve of the utility model are detachable, and the insulating bushing can be replaced according to the size of the processed hole and the diameter of the electrode. At the same time, no discharge will occur between the electrode and the insulating bushing, reducing damage to the device itself.

[0012] 2. The position of the guide hole sleeve of the utility model is movable. By adjusting the position of the universal joint rod slider in the base slide groove, the matching angle between the upper end of the ball head rod and the guide hole sleeve earring, and the rotation angle of the ball at the lower end of the ball head rod in the joint bearing covering the ball, the guide hole sleeve can be moved horizontally and up and down within a certain range, making the position of the guide hole sleeve more flexible.

[0013] 3. The clamping block of the utility model is threadedly connected to the threaded rod, and the clamping block can be replaced according to the sizes of different workpieces to adapt to the clamping of workpieces of various shapes and sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is an enlarged view of the structure A part of the utility model;

[0016] Figure 3 It is a schematic diagram of the installation of the structure of the utility model, the workpiece to be processed and the electrode;

[0017] Figure 4 It is a schematic diagram of the connection between the universal joint rod and the ball head rod of the utility model structure;

[0018] In the figure: guide hole sleeve 1, insulating bushing 2, positioning pin 3, ball head rod 4, fastening screw 5, threaded rod 6, horizontal bubble level 7, universal joint rod 8, bolt 9, clamp block 10, spring 11, nut 12, base 13, electrode 14, workpiece 15, slider 16. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the technical solutions in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Reference Figure 1 and Figure 2 The utility model provides a technical solution, a low-pressure micro-arc deep hole processing guide device, including a guide hole sleeve 1, an insulating bushing 2, a positioning pin 3, a ball head rod 4, a fastening screw 5, a threaded rod 6, a horizontal bubble level 7, a universal joint rod 8, a bolt 9, a clamping block 10, a spring 11, a nut 12, and a base 13. The base 13 has four slide grooves and two threaded holes. The four slide grooves are respectively matched with the sliders 16 of the four universal joint rods, and the two threaded holes are threadedly matched with the two threaded rods. The end of the threaded rod 6 has a thread, and the clamping block 10 has a threaded hole. The clamping block 10 tightens the end of the threaded rod 6. The lower end of the universal joint rod 8 has a slider 16 with a through hole. The bolt 9 passes through the through hole of the slider 16 and is screwed together with the nut 12 to achieve the effect of tightening and loosening. The upper end of the universal joint rod 8 is provided with a spherical joint bearing covering the sphere, and the lower end of the ball head rod 4 is a sphere. The sphere of the ball head rod 4 is assembled in the spherical joint bearing covering the sphere. The fastening screw 5 passes through the ear at the upper end of the universal joint rod 8. The spherical joint bearing covering the sphere is tightened or loosened by rotating the fastening screw 5. The upper end of the ball head rod 4 is a serrated disc, and the guide hole sleeve 1 has an ear with a serrated disc. The upper end of the ball head rod 4 and the ear of the guide hole sleeve 1 are positioned and matched by the locating pin 3. The spring 11 prevents its serrated meshing translation and sliding of the teeth. The insulating bushing 2 is an insulating high-temperature resistant ceramic material.

[0021] Reference Figure 3 and Figure 4, is a schematic diagram of the installation of the guide device, the workpiece and the electrode. First, install the workpiece 15 between the clamping blocks 10, and fix the workpiece 15 by twisting the threaded rod 6 with a wrench. Secondly, loosen the bolts 9 and the fastening screws 5, move the guide hole sleeve 1 to align it with the hole position of the workpiece, determine the position of the slider 16 in the slide groove of the base 13, and then tighten the bolts 9 and the nuts 12 to prevent the slider 16 from sliding and the universal joint rod 8 from rotating. Furthermore, observe the horizontal bubble level 7, keep the guide hole sleeve 1 horizontal, adjust the distance between the guide hole sleeve 1 and the workpiece 15, and the rotation and rotation angles between the universal joint rod 8, the ball head rod 4 and the guide hole sleeve 1 ear are determined. Tighten the fastening screws 5 to prevent the universal joint rod 8 and the ball head rod 4 from rotating, and the spring 11 will also prevent the serrations between the ball head rod 4 and the guide hole sleeve 1 ear from translating and sliding. At this point, the entire device and the workpiece have been installed. Finally, the electrode 14 on the bed spindle is passed through the guide hole of the insulating bushing, and then the processing can be carried out. If other holes are to be processed again, then the processed holes are realigned according to the above operation.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-pressure micro-arc deep hole machining guide device, comprising a guide hole sleeve (1), an insulating bushing (2), a positioning pin (3), a ball head rod (4), a fastening screw (5), a threaded rod (6), a horizontal bubble level (7), a universal joint rod (8), a bolt (9), a clamping block (10), a spring (11), a nut (12), and a base (13), wherein: The base (13) has four slide grooves and two threaded holes, the threaded rod (6) has threads at the end, the clamping block (10) has threaded holes, the lower end of the universal joint rod (8) has a slider with a through hole, and the upper end has a joint bearing covering a sphere, the lower end of the ball head rod (4) is a sphere, and the upper end is a disc with serrations, the guide hole sleeve (1) has a lifting ear with a serration disc, the insulating bushing (2) is an insulating high-temperature resistant ceramic material, the slider at the lower end of the universal joint rod (8) is limited to move in the slide groove, the threaded rod (6) and the threaded holes of the base (13) are connected to each other. A threaded connection is used, the upper end of the universal joint rod (8) is provided with a spherical joint bearing, the sphere at the lower end of the ball head rod (4) is restricted in the spherical joint bearing, the fastening screw (5) is assembled on the lifting ear at the upper end of the universal joint rod (8), the upper end of the ball head rod (4) and the lifting ear of the guide hole sleeve (1) are assembled by serration meshing, a horizontal bubble level (7) is installed above the guide hole sleeve (1), the insulating bushing (2) and the guide hole sleeve (1) are interference fit, and the insulating bushing (2) can be replaced according to the diameter size of the electrode.

2. A low-pressure micro-arc deep hole machining guide device according to claim 1, characterized in that: The bolt (9) passes through the through hole of the slider (16) and is screwed with the nut (12) to achieve a tightening or loosening effect.

3. A low-pressure micro-arc deep hole machining guide device according to claim 1, characterized in that: The positioning pin (3) fastens the ball head rod (4) and the lifting ear of the guide hole sleeve (1) together, and the spring (11) prevents the saw teeth from engaging the translation sliding teeth.

4. A low-pressure micro-arc deep hole machining guide device according to claim 1, characterized in that: The threaded rod (6) and the clamping block (10) are matched with each other through threads, and the clamping block can be detached and replaced according to the size and shape of the workpiece.

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