Electrolytic grinding head for electrolytic grinding machine

Abstract

The utility model relates to an electrolytic grinding device, in particular to an electrolytic grinding head for an electrolytic grinding machine. Comprising a step-shaped flange plate, and a nut sleeves a connecting part of the flange plate; the small end of the flange plate is sleeved with a grinding wheel fixing clamp, and a grinding wheel is fixed in the grinding wheel fixing clamp. A conductive base is arranged on the side, close to the nut, of the grinding wheel fixing clamp, and insulating assemblies are arranged among the conductive base, the grinding wheel fixing clamp and the flange plate. Electrodes are arranged in the middles of the sides, away from the grinding wheel fixing clamps, of the conductive bases; a machine tool spindle mounting hole is formed in the large end of the flange plate, and a connecting threaded rod is arranged in the machine tool spindle mounting hole and connected with a machine tool spindle. According to the electrolytic grinding device, the grinding wheel, the grinding wheel fixing clamp, the conductive base and the flange plate are insulated through the arranged insulation assembly, and the problem that the electrolytic grinding effect is unstable due to electric leakage of the grinding wheel due to a conductive medium in the high-speed rotating process is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrolytic grinding head, concretely relates to a kind of for electrolytic grinding machine's electrolytic grinding head. BACKGROUND

[0002] Electrolytic grinding is a kind of combined electrolytic machining and mechanical grinding composite processing technology, mainly used for processing high-strength, high-hardness, heat-sensitive, brittle and other difficult-to-machine materials.

[0003] In the existing electrolytic grinding machine tool, direct current needs to be conducted to conductive grinding wheel through special spindle core, and the spindle will produce leakage phenomenon through conductive medium such as bearing during high-speed rotation, so as to cause unstable electrolytic grinding effect;In order to make up for the efficiency loss caused by leakage, electrolytic voltage is usually increased to 90~100V, and electrolytic current is increased to 30~50A, so as to guarantee electrolytic grinding effect. However, this high-voltage and high-current working state not only greatly shortens the service life of the spindle, increases the maintenance cost, but also leads to low processing efficiency. More importantly, the high-voltage and high-current working environment has serious safety hazards, which may threaten the personal safety of the operator.

[0004] Therefore, an electrolytic grinding head for electrolytic grinding machine is needed to solve the above problems. SUMMARY

[0005] The utility model aims at solving the technical problem that the existing electrolytic grinding device leaks through conductive medium such as bearing during high-speed rotation, resulting in unstable electrolytic grinding effect, and provides an electrolytic grinding head for electrolytic grinding machine.

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

[0007] An electrolytic grinding head for electrolytic grinding machine, comprising a stepped flange plate, a connecting part is arranged at the small end of the flange plate, and a nut is arranged on the connecting part;

[0008] A grinding wheel fixing clamp is arranged on the small end of the flange plate, and a grinding wheel is fixed in the grinding wheel fixing clamp;

[0009] The side of the grinding wheel fixing clamp close to the nut is provided with a conductive seat, and an insulating component is arranged between the conductive seat, the grinding wheel fixing clamp and the flange plate;

[0010] The middle part of the side of the conductive seat away from the grinding wheel fixing clamp is provided with an electrode, and the central axis of the electrode coincides with the central axis of the machine tool spindle;

[0011] The large end of the flange plate is provided with a machine tool spindle mounting hole, a connecting threaded rod is arranged in the machine tool spindle mounting hole, and the connecting threaded rod is connected with the machine tool spindle.

[0012] Further, the insulating assembly comprises a first insulating ring sleeved on the small end of the flange plate.

[0013] The outer side of the first insulating ring is sleeved with a second insulating ring and a third insulating ring distributed on both sides of the grinding wheel fixing clamp, and the side of the second insulating ring away from the third insulating ring is provided with an insulating cover.

[0014] Further, the grinding wheel fixing clamp comprises a first fixing disc and a second fixing disc sleeved on the outer side of the first insulating ring.

[0015] The first fixing disc is provided with a ring-shaped placement groove, the grinding wheel is placed in the placement groove, and the first fixing disc, the grinding wheel and the second fixing disc are connected through a plurality of circumferentially distributed screws.

[0016] Further, the nut is provided with a ring-shaped groove on the side end face away from the first insulating ring, and a plurality of balance blocks are installed in the ring-shaped groove through fixing screws.

[0017] Further, the small end of the flange plate is provided with a stepped mounting hole in communication with the machine tool spindle mounting hole.

[0018] The connecting threaded rod is provided with a boss which can be matched with the large section of the stepped mounting hole.

[0019] Further, the conductive seat is connected with the first fixing disc and the second fixing disc through bolts.

[0020] Compared with the prior art, the utility model has the advantages of:

[0021] 1. The electrolytic grinding head for the electrolytic grinding machine is connected with the machine tool spindle through the machine tool spindle mounting hole and the connecting threaded rod, and can be applied to electrolytic grinding machines of different models.

[0022] 2. The electrolytic grinding head for the electrolytic grinding machine can be connected with the machine tool spindle through the machine tool spindle mounting hole and the connecting threaded rod, and can be applied to electrolytic grinding machines of different models. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The structure of the utility model embodiment is shown in the figure;

[0024] Figure 2The second view angle structure schematic view of the embodiment of the utility model;

[0025] Figure 3 The internal structure schematic view of the embodiment of the utility model.

[0026] The label explanation: 1 - flange plate, 2 - nut, 3 - grinding wheel fixed fixture, 31 - first fixed disc, 311 - place groove, 32 - second fixed disc, 33 - screw, 4 - grinding wheel, 5 - electric seat, 6 - insulation assembly, 61 - first insulation ring, 62 - second insulation ring, 63 - third insulation ring, 64 - insulation cover, 7 - machine tool main shaft mounting hole, 8 - connecting threaded rod, 81 - boss, 9 - annular groove, 10 - balance block, 11 - step mounting hole, 12 - bolt. DETAILED DESCRIPTION

[0027] The technical scheme in the utility model will be described below in conjunction with the drawings, apparently, the described embodiment is only a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment of the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the scope of the utility model protection.

[0028] As Figure 1 , Figure 2 and Figure 3 Indicated, a kind of for electrolytic grinder electrolytic grinding head, including flange plate 1 of ladder shape, the small end of flange plate 1 is equipped with connecting portion, nut 2 is sleeved on connecting portion;Flange plate 1 small end is sleeved with grinding wheel fixed fixture 3, and grinding wheel 4 is fixed in grinding wheel fixed fixture 3;

[0029] As Figure 1 and Figure 3 Indicated, grinding wheel fixed fixture 3 includes the first fixed disc 31 and second fixed disc 32 of the first insulation ring 61 outside sleeve;First fixed disc 31 is equipped with the annular place groove 311, grinding wheel 4 is placed in place groove 311, and first fixed disc 31, grinding wheel 4 and second fixed disc 32 are connected by multiple circumferentially distributed screw 33;

[0030] As Figure 1 and Figure 3 Indicated, grinding wheel fixed fixture 3 is equipped with electric seat 5 on the side close to nut 2, and electric seat 5 is connected with first fixed disc 31 and second fixed disc 32 by bolt 12.

[0031] As Figure 1 and Figure 3As shown, to avoid the problem of unstable electrolytic grinding effect caused by leakage during the electrolytic grinding process, an insulating component 6 is provided between the conductive seat 5, the grinding wheel fixing fixture 3 and the flange 1; the insulating component 6 includes a first insulating ring 61 sleeved on the small end of the flange 1; a second insulating ring 62 and a third insulating ring 63 distributed on both sides of the grinding wheel fixing fixture 3 are sleeved on the outside of the first insulating ring 61, and an insulating cover 64 is provided on the side of the second insulating ring 62 away from the third insulating ring 63; the cross-section of the second insulating ring 62 and the third insulating ring 63 is L-shaped; the first insulating ring 61, the second insulating ring 62, the third insulating ring 63 and the insulating cover 64 are used to isolate the flange 1, the nut 2 from the conductive seat 5 and the grinding wheel fixing fixture 3.

[0032] To facilitate power supply to the electrolytic grinding device, an electrode is provided in the middle of the conductive seat 5 on the side away from the grinding wheel fixing fixture 3. The electrode is not shown in the figure, and the central axis of the electrode coincides with the central axis of the machine tool spindle.

[0033] 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 7 is provided at the large end of the flange 1. A connecting threaded rod 8 is provided in the spindle mounting hole 7, and the connecting threaded rod 8 is connected to the spindle.

[0034] 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 9 is provided on the end face of the nut 2 away from the first insulating ring 61, and multiple balance blocks 10 are installed in the annular groove 9 by fixing screws 33.

[0035] like Figure 3 As shown, in order to enable the electrolytic grinding device to be installed on different electrolytic grinding machine tools, the small end of the flange 1 is provided with a stepped mounting hole 11 that communicates with the machine tool spindle mounting hole 7; the connecting threaded rod 8 is provided with a boss 81 that can be adapted to the large section of the stepped mounting hole 11; the connecting threaded rod 8 is locked in the stepped mounting hole 11 by the boss 81 on the connecting threaded rod 8.

[0036] In this embodiment, the negative terminal of the DC power supply is connected to the electrode in the electrolytic grinding device, and the positive terminal is connected to the workpiece. After the wiring is completed, the grinding wheel 4 in the electrolytic grinding device can be rotated by the machine tool spindle to realize electrolytic grinding. If electrolytic grinding is not required, the electrolytic grinding device can be removed and the conventional grinding wheel 4 can be replaced to perform conventional grinding.

[0037] The above merely illustrates the specific implementation of the present application, but the protection scope of the present application is not limited to this, any change or replacement within the technical scope disclosed by the present application should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An electrolytic grinding head for an electrolytic grinder, characterized by: The stepped flange plate (1) is provided with a connecting part at the small end, and a nut (2) is sleeved on the connecting part; A grinding wheel fixing clamp (3) is sleeved on the small end of the flange plate (1), and a grinding wheel (4) is fixed in the grinding wheel fixing clamp (3); An electrically conductive seat (5) is arranged on the side of the grinding wheel fixing clamp (3) close to the nut (2), and an insulation assembly (6) is arranged between the electrically conductive seat (5), the grinding wheel fixing clamp (3) and the flange plate (1); An electrode is arranged on the middle of the side of the electrically conductive seat (5) away from the grinding wheel fixing clamp (3), and the central axis of the electrode coincides with the central axis of the machine tool spindle; A machine tool spindle mounting hole (7) is arranged at the large end of the flange plate (1), and a connecting threaded rod (8) is arranged in the machine tool spindle mounting hole (7) and connected with the machine tool spindle.

2. The electrolytic grinding head for an electrolytic grinder according to claim 1, characterized in that: The insulation assembly (6) comprises a first insulation ring (61) sleeved on the small end of the flange plate (1); A second insulation ring (62) and a third insulation ring (63) are sleeved on the outside of the first insulation ring (61) and arranged on both sides of the grinding wheel fixing clamp (3), and an insulation cover (64) is arranged on the side of the second insulation ring (62) away from the third insulation ring (63).

3. The electrolytic grinding head for an electrolytic grinder according to claim 2, characterized in that: The grinding wheel fixing clamp (3) comprises a first fixed disc (31) and a second fixed disc (32) sleeved on the outside of the first insulation ring (61); An annular placement groove (311) is arranged on the first fixed disc (31), and the grinding wheel (4) is arranged in the placement groove (311), and the first fixed disc (31), the grinding wheel (4) and the second fixed disc (32) are connected by a plurality of circumferentially distributed screws (33).

4. The electrochemical grinding head for an electrochemical grinder according to claim 1, characterized in that: An annular groove (9) is arranged on the end face of the nut (2) away from the first insulation ring (61), and a plurality of balance blocks (10) are arranged in the annular groove (9) by fixing screws (33).

5. The electrolytic grinding head for an electrolytic grinder according to claim 1, characterized in that: A stepped mounting hole (11) is arranged at the small end of the flange plate (1) and communicates with the machine tool spindle mounting hole (7); A boss (81) is arranged on the connecting threaded rod (8) and can be matched with the large section of the stepped mounting hole (11).

6. The electrolytic grinding head for an electrolytic grinder of claim 1, wherein: The electrically conductive seat (5) is connected with the first fixed disc (31) and the second fixed disc (32) by bolts (12).

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