Electric spark electrode clamping tool

Abstract

An electric spark electrode clamping tool comprises a tool body (1), an electrode (2), an electrode mounting plate (3), a positioning block (5), a pressing block (6), a screw (7), a square window hole (8) and a square window hole (9), and is characterized in that the upper portion of the tool body (1) is connected with a spindle of an electric spark machine tool, an assembling portion used for assembling the electrode mounting plate (3) is arranged on the lower portion of the tool body (1), and rapid and accurate positioning is achieved; the electrode mounting plate (3) is provided with a groove for mounting the electrode (2), the inner side of the electrode (2) is provided with a positioning block (5) for controlling the axial size between the square window hole (8) and the square window hole (9) above the valve sleeve, and the electrode (2) and the positioning block (5) are pressed on the electrode mounting plate (3) by the pressing block (6) through screws (7). Working efficiency is effectively improved, operation is easy and convenient, and therefore a large amount of manual labor is reduced, and production cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrode clamping technical field especially relates to a spark electrode clamping frock. BACKGROUND

[0002] The square window hole machining process of the valve sleeve in the current electro-hydraulic servo valve is as follows: firstly, the square window hole shape is processed by wire cutting, and a little machining allowance is left, and then the design pattern required size precision, shape tolerance and surface roughness are ensured by artificial grinding.

[0003] Due to the wire cutting machine bed characteristics, the surface roughness of the valve sleeve square window hole after wire cutting is poor, and then the coplanarity of the square window holes is unstable; due to the molybdenum wire characteristics, the four corners of the square window hole are not right angles, but arc angles, and the arc angle radius is equal to the molybdenum wire radius, which needs to be subsequently modified to right angles, which brings great trouble to grinding processing: not only increases the workload, but also consumes more manpower, and the production efficiency is low, thereby increasing the processing cost. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem in the above background art by providing a spark electrode clamping frock.

[0005] The technical problem solved by the utility model is realized by the following technical scheme:

[0006] A spark electrode clamping frock, comprising a frock body (1), an electrode (2), an electrode mounting plate (3), a positioning block (5), a compression block (6), a screw (7), a square window hole (8) and a square window hole (9), wherein the upper part of the frock body (1) is connected with the main shaft of the spark machine tool, and the lower part is provided with an assembly part for assembling the electrode mounting plate (3); the electrode mounting plate (3) is provided with a groove matched with the size of the electrode (2) for mounting the electrode (2); and the positioning block (5) for controlling the axial size between the square window hole (8) and the square window hole (9) on the valve sleeve is arranged on the inner side of the electrode (2), and the compression block (6) compresses the electrode (2) and the positioning block (5) on the electrode mounting plate (3) through the screw (7).

[0007] In the utility model, the frock body (1) is provided with a cavity for accommodating the compression block (6).

[0008] In the utility model, the frock body (1) is provided with an installation through hole on the entrance of the cavity for installing the screw (7), and the electrode (2) and the positioning block (5) are compressed on the electrode mounting plate (3) through the screw (7).

[0009] The tool body (1) assembly part is provided with a mounting hole, and the electrode mounting plate (3) is positioned at the tool body (1) assembly part through a screw (4).

[0010] In the utility model, the electrode (2) is vertically arranged in the recess of the electrode mounting plate (3).

[0011] In the utility model, the recess is symmetrically provided with a bayonet at one end, and the electrode (2) is vertically arranged.

[0012] In the utility model, the electrode (2) is a tungsten-copper alloy electrode.

[0013] Beneficial effects: the utility model discloses the electrode is installed in the tool body assembly part through the electrode mounting plate, realizes quick positioning, and positioning is accurate, effectively improves work efficiency, and the operation is simple, thereby reduces a large amount of manual labor, and reduces production cost. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the top view of the preferable embodiment of the utility model.

[0015] Figure 2 It is the sectional view of the preferable embodiment of the utility model.

[0016] Figure 3 It is the valve sleeve appearance diagram of electro-hydraulic servo valve in the preferable embodiment of the utility model.

[0017] Figure 4 It is the recess structure schematic view of electrode mounting plate in the preferable embodiment of the utility model. PREFERRED EMBODIMENT

[0018] In order to make the technical means, creative characteristics, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific drawings.

[0019] See Figures 1-3The utility model provides an electrode clamping tool of electric spark, including tool body (1), electrode (2), electrode mounting plate (3), screw (4), locating block (5), compression block (6), screw (7), square window hole (8) and square window hole (9), wherein, the upper portion of tool body (1) is connected with electric spark machine tool spindle, and the lower portion is provided with assembly part for assembling electrode mounting plate (3), the recess that is matched with the size of electrode (2) is set up on electrode mounting plate (3) and is used to install electrode (2), and electrode (2) is vertically arranged in the recess of electrode mounting plate (3), locating block (5) is arranged in the inside of electrode (2) and is used to control the axial dimension between square window hole (8) and square window hole (9) on the valve sleeve, compression block (6) is compressed on electrode mounting plate (3) by screw (7) with electrode (2), locating block (5), electrode mounting plate (3) is installed at the assembly part of tool body (1) by screw (4).

[0020] In the embodiment, the tool body (1) is provided with a cavity for accommodating the compression block (6).

[0021] In the embodiment, the tool body (1) is provided with a mounting through hole at the entrance of the cavity for mounting the screw (7), which is used to compress the electrode (2) and the locating block (5) on the electrode mounting plate (3).

[0022] In the embodiment, the assembly part of the tool body (1) is provided with a mounting hole for mounting the electrode mounting plate (3) on the assembly part of the tool body (1) by the screw (4).

[0023] In the embodiment, the recess is symmetrically provided with a bayonet at one end for vertically arranging the electrode (2). Figure 4 As shown in the figure, H is the thickness of the electrode (2), H1 is the height of the electrode mounting plate (3), L is the length of the electrode mounting plate (3), L1 is the width of one end of the recess, and L2 is the width of the other end of the recess.

[0024] In the embodiment, the screw (4) is a hexagonal head cylinder screw.

[0025] In the embodiment, the screw (7) is a slotted cylinder head screw.

[0026] In the embodiment, the electrode (2) is a tungsten-copper alloy electrode.

[0027] In the embodiment, as shown in the figure, Figure 3The utility model discloses a kind of machining electro-hydraulic servo valve sleeve's appearance drawing, square window hole (8) and square window hole (9) are square window hole to be processed, since square window hole processing quality directly entire electro-hydraulic servo valve product performance, while high to electro-hydraulic servo valve square window hole size precision and form tolerance requirement, processing difficulty is very big, thus the processing method and processing tooling requirement of electro-hydraulic servo valve square window hole are relatively high;

[0028] The assembled electrospark electrode clamping tool is used with electro-hydraulic servo valve sleeve electrospark positioning tool, electro-hydraulic servo valve sleeve square window hole is electrospark drilled, first, the upper part of tool body (1) of electrospark electrode clamping tool is fixed with electrospark machine tool spindle, then electrode (2) on electrode clamping tool is corrected using adjusting tool, and electrospark drilling is carried out, after a group of square window hole (8) and square window hole (9) on electro-hydraulic servo valve sleeve are processed, valve sleeve is rotated by 90 °, and another group of square window hole is processed.

[0029] If there are four square window holes in each group on electro-hydraulic servo valve sleeve, electrode clamping tool does not need to be redesigned and made, and only the number and specification of electrode (2) and positioning block (5) in existing electrospark electrode clamping tool are replaced, so that the use range of electrode clamping tool is increased.

[0030] The basic principle and main features of the utility model are shown and described above, and the advantages of the utility model are shown and described above, for those skilled in the art, obviously, the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. An electrospark electrode clamping tool, comprising a tool body (1), an electrode (2), an electrode mounting plate (3), a positioning block (5), a pressing block (6), a screw (7) and a square window hole to be processed, characterized in that: The upper portion of the tooling body (1) is connected to the main shaft of the electric spark machine tool, and the lower portion of the tooling body (1) is provided with an assembly portion for assembling an electrode mounting plate (3); a groove for mounting the electrode (2) is provided on the electrode mounting plate (3), and a positioning block (5) for controlling the axial dimension between the square window holes to be processed on the valve sleeve is provided on the inner side of the electrode (2); the clamping block (6) presses the electrode (2) and the positioning block (5) onto the electrode mounting plate (3) through a screw (7).

2. The EDM electrode clamping tool according to claim 1, characterized in that: A cavity for accommodating a pressing block (6) is provided in the tooling body (1).

3. The EDM electrode clamping tool according to claim 2, characterized in that: A mounting through hole is provided on the tooling body (1) where the pressing block (6) enters the cavity entrance.

4. The EDM electrode clamping tool according to claim 1, characterized in that: The assembly portion of the tooling body (1) is provided with a mounting hole.

5. The EDM electrode clamping tool according to claim 1, characterized in that: The electrode (2) is vertically arranged in the groove of the electrode mounting plate (3).

6. The EDM electrode clamping tool according to claim 5, characterized in that: The groove matches the size of the electrode (2).

7. The EDM electrode clamping tool according to claim 5, characterized in that: A bayonet for vertically arranging the electrode (2) is symmetrically arranged at one end of the groove.

8. The EDM electrode clamping tool according to claim 1, characterized in that: The electrode (2) is a tungsten-copper alloy electrode.

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