Electrolytic grinding device for electrolytic grinding machine

Abstract

The utility model relates to an electrolytic grinding device, in particular to an electrolytic grinding device for an electrolytic grinding machine. Comprising an electrolytic grinding head and a conductive assembly arranged on the extension line of the central axis of the electrolytic grinding head. The conductive assembly comprises a fixed seat, and an insulating sleeve is mounted in the middle of the fixed seat; an electrode is installed in the insulating sleeve in a sliding mode, an elastic piece is arranged between the electrode and the inner wall of the insulating sleeve, one end of the electrode abuts against the electrolytic grinding head, and the other end of the electrode is provided with a wire fixing piece connected with a wire. Compared with an existing electrolytic grinding device, the electrolytic grinding device has the advantages that the electrode and the electrolytic grinding head abut against each other through the elastic piece, the situation that poor contact possibly occurs between the electrode and the electrolytic grinding head in the high-speed rotating process of the electrolytic grinding head is effectively avoided, and therefore the stability of electrolytic grinding quality is guaranteed.

Description

Technical Field

[0001] This utility model relates to an electrolytic grinding device, specifically to an electrolytic grinding device for an electrolytic grinding machine. Background Technology

[0002] Electrolytic grinding is a composite machining technology that combines electrolytic machining and mechanical grinding. It is mainly used to process materials that are difficult to machine, such as those with high strength, high hardness, heat sensitivity, and brittleness.

[0003] In existing electrolytic grinding machines, the common practice is to connect a DC power supply to the carbon brushes on the spindle core, and then use the spindle core to transmit the DC power to the grinding wheel. However, during electrolytic grinding, when the grinding wheel rotates with the spindle core at speeds exceeding 4000 rpm, poor contact can easily occur between the carbon brushes and the spindle. This can lead to current fluctuations, which in turn affect the electrolytic grinding quality of the machine tool.

[0004] Therefore, there is an urgent need for an electrolytic grinding device for electrolytic grinding machines to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to solve the technical problem that poor contact easily occurs between the carbon brush and the spindle during high-speed rotation of existing electrolytic grinding devices, which affects the electrolytic grinding quality of the machine tool, and to provide an electrolytic grinding device for electrolytic grinding machines.

[0006] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0007] An electrolytic grinding apparatus for an electrolytic grinding machine includes an electrolytic grinding head and a conductive component disposed on the extension line of the central axis of the electrolytic grinding head.

[0008] The conductive component includes a mounting base, and an insulating sleeve is installed in the middle of the mounting base;

[0009] An electrode is slidably installed inside the insulating sleeve. An elastic element is provided between the electrode and the inner wall of the insulating sleeve. One end of the electrode abuts against the electrolytic grinding head, and the other end of the electrode is provided with a wire fixing element connected to the wire.

[0010] Furthermore, the electrode is stepped, with the large end of the electrode abutting against the electrolytic grinding head;

[0011] The insulating sleeve has a stepped hole in the middle that matches the electrode;

[0012] The elastic element is sleeved on the small end of the electrode, and the two ends of the elastic element abut against the large end face of the stepped hole and the large end face of the electrode, respectively.

[0013] Furthermore, a guide plane is provided on the small end side of the electrode;

[0014] A guide bolt is inserted into the side of the insulating sleeve, and the stud end face of the guide bolt is in contact with the guide plane.

[0015] Furthermore, the wire fixing component includes a clamping screw, which is mounted on the small end face of the electrode;

[0016] A washer is fitted onto the stud of the clamping screw, and the wire is fixed between the washer and the nut of the clamping screw.

[0017] Furthermore, the elastic element is a spring.

[0018] Furthermore, the electrolytic grinding head includes a stepped flange, with a connecting part at the small end of the flange, and a nut fitted on the connecting part;

[0019] A grinding wheel fixing clamp is fitted on the small end of the flange, and the grinding wheel is fixed inside the grinding wheel fixing clamp;

[0020] The grinding wheel fixing clamp is provided with a conductive seat on the side near the nut, and an insulating component is provided between the conductive seat, the grinding wheel fixing clamp and the flange.

[0021] The middle part of the conductive seat on the side away from the grinding wheel fixing clamp abuts against the electrode;

[0022] The flange has a machine tool spindle mounting hole at its large end, and a connecting threaded rod is provided in the machine tool spindle mounting hole, which is connected to the machine tool spindle.

[0023] Furthermore, the insulating assembly includes a first insulating ring fitted onto the small end of the flange;

[0024] The outer side of the first insulating ring is fitted with a second insulating ring and a third insulating ring distributed on both sides of the grinding wheel fixing clamp, and an insulating cover is provided on the side of the second insulating ring away from the third insulating ring.

[0025] Furthermore, the grinding wheel fixing clamp includes a first fixing plate and a second fixing plate sleeved on the outside of the first insulating ring;

[0026] The first fixed plate has an annular placement groove, the grinding wheel is placed in the placement groove, and the first fixed plate, the grinding wheel and the second fixed plate are connected by a plurality of circumferentially distributed screws.

[0027] Furthermore, an annular groove is formed on the end face of the nut away from the first insulating ring, and multiple balance blocks are installed in the annular groove by fixing screws.

[0028] Furthermore, the small end of the flange is provided with a stepped mounting hole that communicates with the machine tool spindle mounting hole;

[0029] The connecting threaded rod is provided with a boss that can be adapted to the large section of the stepped mounting hole.

[0030] Furthermore, the conductive base is connected to the first fixed plate and the second fixed plate by bolts.

[0031] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0032] 1. The electrolytic grinding device for an electrolytic grinding machine provided by this utility model, by setting an electrolytic grinding head and a conductive component, wherein the electrode in the conductive component abuts against the electrolytic grinding head through an elastic element and is connected to the wire through a wire fixing component, so that the power supply can supply power to the electrolytic grinding head through the wire and the electrode to realize electrolytic grinding. Compared with the existing electrolytic grinding devices, by using an elastic element to press the electrode against the electrolytic grinding head, the poor contact that may occur between the electrode and the electrolytic grinding head during the high-speed rotation of the electrolytic grinding head is effectively avoided, thereby ensuring the stability of the electrolytic grinding quality.

[0033] 2. The electrolytic grinding device for an electrolytic grinding machine provided by this utility model connects the positive terminal of the power supply to the workpiece to be ground and the negative terminal of the power supply to the electrode on the conductive seat during electrolytic grinding, so as to realize electrolytic grinding. In addition, the insulating components are set to insulate the grinding wheel, grinding wheel fixing fixture, conductive seat and flange, which helps to avoid the problem of unstable electrolytic grinding effect caused by leakage of the conductive medium during high-speed rotation of the grinding wheel. There is no need to increase the size of the electrolytic voltage and electrolytic current to ensure the electrolytic grinding effect, which effectively protects the service life of the machine tool spindle.

[0034] 3. The electrolytic grinding device for electrolytic grinding machines provided by this utility model can be connected to the machine tool spindle through the machine tool spindle mounting hole and the connecting threaded rod, and can be applied to different models of electrolytic grinding machines. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0036] Figure 2 This is a second-view structural schematic diagram of an embodiment of the present utility model;

[0037] Figure 3 This is a schematic diagram of the internal structure of an embodiment of the present utility model.

[0038] Explanation of reference numerals in the attached drawings: 1-Electrolytic grinding head, 2-Conductive component, 3-Fixed seat, 4-Insulating sleeve, 41-Stepped hole, 5-Electrode, 6-Elastic element, 7-Wire fixing component, 8-Guide bolt, 9-Clamping screw, 10-Washer, 11-Flange, 12-Nut, 13-Grinding wheel fixing clamp, 131-First fixing plate, 132-Second fixing plate, 133-Screw, 14-Grinding wheel, 15-Conductive seat, 16-Insulating component, 161-First insulating ring, 162-Second insulating ring, 163-Third insulating ring, 164-Insulating cover, 17-Machine tool spindle mounting hole, 18-Connecting threaded rod, 181-Boss, 19-Annular groove, 20-Balance block, 21-Stepped mounting hole, 22-Bolt. Detailed Implementation

[0039] The technical solutions of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0040] like Figure 1 and Figure 2 As shown, an electrolytic grinding apparatus for an electrolytic grinding machine includes an electrolytic grinding head 1 and a conductive component 2 disposed on the extension line of the central axis of the electrolytic grinding head 1.

[0041] like Figure 1 and Figure 2 As shown, the conductive component 2 includes a fixing base 3, and an insulating sleeve 4 is installed in the middle of the fixing base 3; an electrode 5 is slidably installed inside the insulating sleeve 4, such as... Figure 3 As shown, an elastic element 6 is provided between the electrode 5 and the inner wall of the insulating sleeve 4. One end of the electrode 5 abuts against the electrolytic grinding head 1, and the other end of the electrode 5 is provided with a wire fixing element 7 connected to the wire.

[0042] like Figure 3 As shown, in order to facilitate the installation of the elastic element 6 and to ensure that one end of the electrode 5 can be in contact with the electrolytic grinding head 1, the electrode 5 is stepped, with the larger end of the electrode 5 in contact with the electrolytic grinding head 1; the middle part of the insulating sleeve 4 is provided with a stepped hole 41 that matches the electrode 5; the smaller end of the electrode 5 is fitted with an elastic element 6, which is a spring; the two ends of the spring are respectively in contact with the larger end face of the stepped hole 41 and the larger end face of the electrode 5.

[0043] like Figure 1 and Figure 3As shown, in order to enable the electrode 5 to slide within the insulating sleeve 4 without rotating, a guide plane is provided on the small end side of the electrode 5; a guide bolt 8 is inserted into the side of the insulating sleeve 4, and the stud end face of the guide bolt 8 is in contact with the guide plane.

[0044] like Figure 1 and Figure 3 As shown, in order to connect the wire to the electrode 5, the wire fixing component 7 includes a clamping screw 9, which is installed on the small end face of the electrode 5; a washer 10 is sleeved on the stud of the clamping screw 9, and the wire is fixed between the washer 10 and the nut of the clamping screw 9.

[0045] like Figure 3 As shown, the electrolytic grinding head 1 includes a stepped flange 11, a connecting part is provided at the small end of the flange 11, and a nut 12 is fitted on the connecting part; a grinding wheel fixing clamp 13 is fitted on the small end of the flange 11, and the grinding wheel 14 is fixed in the grinding wheel fixing clamp 13.

[0046] like Figure 1 and Figure 3 As shown, the grinding wheel fixing clamp 13 includes a first fixing plate 131 and a second fixing plate 132 sleeved on the outside of the first insulating ring 161; the first fixing plate 131 has an annular placement groove, the grinding wheel 14 is placed in the placement groove, and the first fixing plate 131, the grinding wheel 14 and the second fixing plate 132 are connected by a plurality of circumferentially distributed screws 133.

[0047] like Figure 2 and Figure 3 As shown, the grinding wheel fixing clamp 13 has a conductive seat 15 on the side near the nut 12. The conductive seat 15 is connected to the first fixing plate 131 and the second fixing plate 132 by bolts 22.

[0048] like Figure 1 and Figure 3 As shown, to avoid the problem of unstable electrolytic grinding effect caused by leakage during the electrolytic grinding process, an insulating component 16 is provided between the conductive seat 15, the grinding wheel fixing fixture 13 and the flange 11. The insulating component 16 includes a first insulating ring 161 sleeved on the small end of the flange 11; a second insulating ring 162 and a third insulating ring 163 distributed on both sides of the grinding wheel fixing fixture 13 are sleeved on the outside of the first insulating ring 161; an insulating cover 164 is provided on the side of the second insulating ring 162 away from the third insulating ring 163; the cross-section of the second insulating ring 162 and the third insulating ring 163 is L-shaped; the first insulating ring 161, the second insulating ring 162, the third insulating ring 163 and the insulating cover 164 are used to isolate the flange 11, the nut 12 from the conductive seat 15 and the grinding wheel fixing fixture 13.

[0049] like Figure 3As shown, in order to facilitate the supply of power to the electrolytic grinding device, the conductive seat 15 is in contact with the electrode 5 on the side away from the grinding wheel fixing clamp 13.

[0050] like Figure 3 As shown, in order to connect the electrolytic grinding device to the spindle of the electrolytic grinding machine, a spindle mounting hole 17 is provided at the large end of the flange 11. A connecting threaded rod 18 is provided in the spindle mounting hole 17, and the connecting threaded rod 18 is connected to the spindle.

[0051] like Figure 3 As shown, in order to ensure that the electrolytic grinding device rotates more stably during the rotation of the machine tool spindle, an annular groove 19 is provided on the end face of the nut 12 away from the first insulating ring 161, and multiple balance blocks 20 are installed in the annular groove 19 by fixing screws 133.

[0052] In order to enable the electrolytic grinding device to be installed on different electrolytic grinding machine tools, the small end of the flange 11 is provided with a stepped mounting hole 21 that communicates with the machine tool spindle mounting hole 17; the connecting threaded rod 18 is provided with a boss 181 that can be adapted to the large section of the stepped mounting hole 21; the connecting threaded rod 18 is locked in the stepped mounting hole 21 by the boss 181 on the connecting threaded rod 18.

[0053] In this embodiment, the electrolytic grinding head 1 is mounted on the spindle of the electrolytic grinding machine, and the conductive component 2 is fixed to the center extension line of the spindle of the electrolytic grinding machine via the fixing seat 3; ensuring that the large end face of the motor abuts against the conductive seat 15; connecting the negative terminal of the DC power supply between the nut of the clamping screw 9 and the washer 10 via a wire, and connecting the positive terminal to the workpiece; after the wiring is completed, the grinding wheel 14 in the electrolytic grinding device can be rotated by the machine spindle to realize electrolytic grinding; if electrolytic grinding is not required, the electrolytic grinding device can be removed and the conventional grinding wheel 14 can be replaced to perform conventional grinding.

[0054] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An electrolytic grinding device for an electrolytic grinder, characterized by: The utility model provides an electrolytic grinding head (1) and the electrically conductive assembly (2) arranged on the extension line of the central axis of the electrolytic grinding head (1). The electrically conductive assembly (2) comprises a fixed seat (3), and an insulating sleeve (4) is arranged in the middle of the fixed seat (3). An electrode (5) is slidably arranged in the insulating sleeve (4), and an elastic element (6) is arranged between the electrode (5) and the inner wall of the insulating sleeve (4).

2. The electrolytic grinding device for an electrolytic grinder according to claim 1, characterized by: One end of the electrode (5) abuts against the electrolytic grinding head (1), and the other end of the electrode (5) is provided with a wire fixing element (7) connected with a wire. The electrode (5) is in a stepped shape, and the large end of the electrode (5) abuts against the electrolytic grinding head (1). A stepped hole (41) matched with the electrode (5) is formed in the middle of the insulating sleeve (4).

3. The electrolytic grinding device for an electrolytic grinder according to claim 1, characterized by: The elastic element (6) is arranged on the small end of the electrode (5), and the two ends of the elastic element (6) abut against the large end face of the stepped hole (41) and the large end face of the electrode (5) respectively. A guide plane is formed on the small end side of the electrode (5).

4. The electrolytic grinding device for an electrolytic grinder according to claim 1, characterized by: A guide bolt (8) is inserted into the side of the insulating sleeve (4), and the stud end face of the guide bolt (8) is attached to the guide plane. The wire fixing element (7) comprises a compression screw (9) arranged on the small end face of the electrode (5).

5. The electrolytic grinding device for an electrolytic grinder according to claim 1, characterized by: A gasket (10) is arranged on the stud of the compression screw (9), and the wire is fixed between the gasket (10) and the nut of the compression screw (9).

6. The electrolytic grinding device for an electrolytic grinder according to claim 1, characterized by: The elastic element (6) is a spring. The electrolytic grinding head (1) comprises a stepped flange plate (11), and the small end of the flange plate (11) is provided with a connecting part, and a nut (12) is arranged on the connecting part. A grinding wheel fixing clamp (13) is arranged on the small end of the flange plate (11), and a grinding wheel (14) is fixed in the grinding wheel fixing clamp (13). An electrically conductive seat (15) is arranged on the side of the grinding wheel fixing clamp (13) close to the nut (12), and an insulating assembly (16) is arranged between the electrically conductive seat (15), the grinding wheel fixing clamp (13) and the flange plate (11). The middle of the side of the electrically conductive seat (15) away from the grinding wheel fixing clamp (13) abuts against the electrode (5).

7. An electrolytic grinding device for an electrolytic grinding machine according to claim 6, characterized in that: A machine tool spindle mounting hole (17) is formed in the large end of the flange plate (11), a connecting threaded rod (18) is arranged in the machine tool spindle mounting hole (17), and the connecting threaded rod (18) is connected with the machine tool spindle. The insulating assembly (16) comprises a first insulating ring (161) arranged on the small end of the flange plate (11).

8. An electrolytic grinding device for an electrolytic grinding machine according to claim 7, characterized in that: The outer side of the first insulating ring (161) is provided with a second insulating ring (162) and a third insulating ring (163) arranged on the two sides of the grinding wheel fixing clamp (13), and the side of the second insulating ring (162) away from the third insulating ring (163) is provided with an insulating cover (164). The grinding wheel fixing clamp (13) comprises a first fixed disc (131) and a second fixed disc (132) arranged on the outer side of the first insulating ring (161). The first fixed disc (131) is provided with an annular placing groove, and the grinding wheel (14) is placed in the placing groove, and the first fixed disc (131), the grinding wheel (14) and the second fixed disc (132) are connected through a plurality of circumferentially distributed screws (133).

9. The electrolytic grinding device for an electrolytic grinder according to claim 6, characterized by: An annular groove (19) is formed in the side end face of the nut (12) away from the first insulating ring (161), and a plurality of balance blocks (20) are mounted in the annular groove (19) through fixing screws (133).

10. The electrolytic grinding device for an electrolytic grinder according to claim 6, characterized by: The small end of the flange plate (11) is provided with a stepped mounting hole (21) which is in communication with the machine tool main shaft mounting hole (17). The connecting threaded rod (18) is provided with a boss (181) which can be matched with the large section of the stepped mounting hole (21).

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