Metallic bond grinding wheel discharge shaping device

Abstract

The utility model discloses a metal bond grinding wheel discharge shaping device which comprises a main shaft fixing seat, a main shaft fixing and rotating mechanism, an electric main shaft, an electrifying connecting mechanism and an insulating connecting shaft, the electrifying connecting mechanism is in clearance fit with the electric main shaft, and an electrolyte spraying mechanism is fixed above the main shaft fixing and rotating mechanism. The electric connecting mechanism is used for electrically connecting the electric connecting mechanism and the electric spindle. The power-on connecting mechanism is in clearance fit with the motorized spindle, so that the power-on connecting mechanism and the motorized spindle are not in contact, and the electrolyte is continuously output between the power-on connecting mechanism and the motorized spindle through the electrolyte spraying mechanism, so that a gap between the power-on connecting mechanism and the motorized spindle is filled with the electrolyte; and the electric spindle and the power-on connecting mechanism are communicated through the electrolyte, so that voltage instability caused by continuous friction between the electric spindle and the power-on connecting mechanism during operation is avoided, and the purpose of providing stable voltage for a copper electrode for electric discharge machining is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bearing processing equipment, in particular to a metal bond grinding wheel discharge shaping device. Background Art

[0002] When using metal bond grinding wheels to grind bearing rings, in order to achieve higher grinding accuracy of the bearing rings, a dual-spindle grinding machine is used to grind the bearing rings. Through one clamping, the grinding wheel can be reshaped, sharpened, and the bearing rings can be ground, thereby improving the grinding accuracy of the bearing rings.

[0003] The grinding wheel discharge shaping electrode of the dual-spindle grinding machine is installed on the electric spindle. During continuous automated processing, the electric spindle needs to rotate. Therefore, the power supply device of the electric spindle needs to be connected to the electric spindle while being able to meet the requirements of stable discharge and voltage. In the existing technology, carbon brushes are usually used to contact the electric spindle for conduction. However, during use, the metal dust generated in the grinding equipment often falls on the surface of the electric spindle, and its contact point with the carbon brush is often disturbed, resulting in discharge and voltage instability, which affects the grinding wheel shaping accuracy.

[0004] Therefore, in order to improve the trimming accuracy of metal bond grinding wheels, it is necessary to invent a metal bond grinding wheel discharge trimming device. Utility Model Content

[0005] The purpose of the utility model is to provide a metal bond grinding wheel discharge shaping device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a metal bond grinding wheel discharge shaping device, comprising a spindle fixing seat, which is fixed on the X-axis platform of the horizontal grinder and is used for discharge, electrode processing and grinding wheel discharge shaping; a spindle fixing and rotating mechanism, which is a driving mechanism, installed in the spindle fixing seat; an electric spindle, which is fixed on the output end of the spindle fixing and rotating mechanism, and is used for clamping the electrode and connecting the power, and the front end of the electric spindle is fixed with a copper electrode; an energized connecting mechanism, which is fixed on the output end of the spindle fixing and rotating mechanism, and is used for connecting the electric spindle and supplying power to the electric spindle; an insulating connecting shaft, which is installed between the spindle fixing and rotating mechanism and the electric spindle, and is used for an insulated and fixed connection between the electric spindle and the spindle fixing and rotating mechanism; the energized connecting mechanism is clearance-matched with the electric spindle, and an electrolyte spraying mechanism is fixed above the spindle fixing and rotating mechanism, which is used for electrically connecting the energized connecting mechanism and the electric spindle.

[0007] Furthermore, the spindle fixing and rotating mechanism includes a motor, a motor fixing sleeve for fixing the motor, and an electric spindle mounting sleeve for assembling the spindle.

[0008] Furthermore: the power connection mechanism includes a fixed mounting plate fixed on the electric spindle mounting sleeve, an electrical connection plate is fixed at the front end of the fixed mounting plate, a carbon plate slot is opened in the electrical connection plate, a sliding carbon plate is slidably fitted in the carbon plate slot, a terminal block for electrical connection of the sliding carbon plate and an adjusting screw for adjusting the position of the sliding carbon plate are fixed on the electrical connection plate, and a limit cover plate for limiting the sliding carbon plate is fixed on one end face of the electrical connection plate.

[0009] Furthermore: a limiting groove is provided at the bottom of the sliding carbon plate, a corner of the limiting groove is provided with a rotating slot, and movable carbon brushes are matched in the limiting groove and the rotating slot.

[0010] Furthermore, the movable carbon brush includes a carbon brush body movably mounted in the rotating slot, and a circular protrusion for limiting the rotation of the carbon brush body is provided at the end of the carbon brush body, and the circular protrusion and the rotating slot form a matching mechanism.

[0011] Furthermore: one end of the carbon brush body is provided with an inclination angle, and when it cooperates with the electric spindle, the front end thereof is tilted and the rear end is fitted.

[0012] Furthermore: a plurality of arc-shaped guide grooves are provided at the bottom of the carbon brush body.

[0013] Furthermore: the electrolyte spraying mechanism includes a pipe fixing holder fixed on the upper end surface of the spindle fixing seat, an electrolyte pipe is fixed on the pipe fixing holder, and the electrolyte pipe is provided with an energized spraying port corresponding to the matching point between the energized connection mechanism and the electric spindle.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The power-on connecting mechanism provided in the present invention sets a clearance fit between the power-on connecting mechanism and the electric spindle so that the two do not contact each other. The electrolyte is continuously output between the power-on connecting mechanism and the electric spindle through the electrolyte spraying mechanism, so that the electrolyte fills the gap between the two, thereby realizing the electrical connection between the power-on connecting mechanism and the electric spindle. In this way, the electric spindle is connected to the rear-end rotating component through the insulating connecting shaft, and the electric spindle is directly powered by the cable, which shortens the power supply distance and reduces the impact of the current on other equipment. The electric spindle and the power-on connecting mechanism are connected by the electrolyte, which avoids the voltage instability caused by the electric spindle constantly rubbing against the power-on connecting mechanism during operation, thereby achieving the purpose of providing a stable voltage for the copper electrode for discharge machining.

[0016] 2. The movable carbon brush of the present invention has multiple arc-shaped guide grooves at the bottom of the brush body. When the electrolyte spray mechanism sprays electrolyte, the electrolyte flows along the tilted end of the movable carbon brush into the arc-shaped guide grooves. The curved walls of the arc-shaped guide grooves increase the angle between the movable carbon brush and the electrolyte and the direction of the liquid flow, thereby enabling the movable carbon brush to be pushed stably. Secondly, the additional arc-shaped guide grooves increase the contact area between the movable carbon brush and the electrolyte and the liquid flow, and ensure that the liquid flow always remains in the multiple arc-shaped guide grooves, thereby increasing the stability of electrical conduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0018] Figure 1 This is a schematic structural diagram of the utility model metal bond grinding wheel discharge shaping device;

[0019] Figure 2 This is a top view of the metal bond grinding wheel discharge shaping device of the utility model;

[0020] Figure 3 This utility model Figure 2 Cross-sectional view along AA;

[0021] Figure 4 This utility model Figure 3 Magnified view of area B in the middle;

[0022] Figure 5 This is a schematic diagram of the assembly of the power connection mechanism of the utility model;

[0023] Figure 6 It is a schematic diagram of the mechanism of the movable carbon brush of the utility model.

[0024] In the accompanying drawings: 1. Spindle fixing seat; 2. Spindle fixing rotation mechanism; 3. Insulated connecting shaft; 4. Electric spindle; 5. Copper electrode; 6. Electrolyte spraying mechanism; 7. Power connection mechanism; 21. Motor fixing sleeve; 22. Motor; 23. Electric spindle mounting sleeve; 61. Electrolyte pipeline; 62. Pipe fixing bracket; 63. Power spray port; 71. Fixed mounting plate; 72. Electrical connection plate; 73. Carbon plate slot; 74. Adjusting screw; 75. Terminal block; 76. Sliding carbon plate; 77. Movable carbon brush; 78. Limiting cover; 761. Limiting groove; 762. Rotating slot; 771. Carbon brush body; 772. Circular protrusion; 773. Arc-shaped guide groove.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0026] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0027] The present invention will be further described below with reference to the accompanying drawings: Figures 1-6 As shown, a metal bond grinding wheel discharge shaping device includes a spindle fixing seat 1, which is fixed on the X-axis platform of the horizontal grinder and is used for discharge, electrode processing and grinding wheel discharge shaping; the spindle fixing seat 1 can move with the X-axis platform to cooperate with equipment at different workstations to perform turning processing on the discharged electrode or discharge shaping on the metal bond grinding wheel.

[0028] The main shaft fixing and rotating mechanism 2 is a driving mechanism installed in the main shaft fixing seat 1;

[0029] The electric spindle 4 is fixed to the output end of the spindle fixing and rotating mechanism 2 and is used for clamping the electrode and connecting the power supply. A copper electrode 5 is fixed to the front end of the electric spindle 4;

[0030] The power connection mechanism 7 is fixed to the output end of the spindle fixing and rotating mechanism 2 and is used to connect to the electric spindle 4 and supply power to the electric spindle 4;

[0031] The insulating connecting shaft 3 is installed between the spindle fixing and rotating mechanism 2 and the electric spindle 4, and is used for the insulated fixed connection between the electric spindle 4 and the spindle fixing and rotating mechanism 2; the spindle is installed in the center of the fixed structure outside the spindle fixing and rotating mechanism 2, and the insulating connecting shaft 3 is fixedly connected to the spindle. The electric spindle 4 is fixed at the front end of the insulating connecting shaft 3, and is used for clamping and fixing the electrode material and energizing the electrode material, thereby performing electrospark machining.

[0032] The power connection mechanism 7 is clearance-matched with the electric spindle 4 , and an electrolyte spraying mechanism 6 is fixed above the spindle fixing and rotating mechanism 2 , which is used to electrically connect the power connection mechanism 7 and the electric spindle 4 .

[0033] During specific operation, the power connection mechanism 7 and the electric spindle 4 are set to a clearance fit so that the two do not contact each other. The electrolyte is continuously output to the space between the power connection mechanism 7 and the electric spindle 4 through the electrolyte spraying mechanism 6, so that the electrolyte fills the gap between the two, thereby realizing the electrical connection between the power connection mechanism 7 and the electric spindle 4. In this way, the electric spindle 4 is connected to the rear-end rotating component through the insulating connecting shaft 3, and the electric spindle 4 is directly powered by the cable, which shortens the power supply distance and reduces the impact of the current on other equipment. The electric spindle 4 and the power connection mechanism 7 are connected through the electrolyte, which avoids the voltage instability caused by the electric spindle 4 constantly rubbing against the power connection mechanism 7 during operation, thereby achieving the purpose of providing a stable voltage for the copper electrode 5 for discharge machining.

[0034] As an embodiment of the present invention, Figure 2 As shown, the spindle fixing and rotating mechanism 2 includes a motor 22, a motor fixing sleeve 21 for fixing the motor 22, and an electric spindle mounting sleeve 23 for assembling the spindle. Both the motor fixing sleeve 21 and the electric spindle mounting sleeve 23 are fixed structures, which are fitted on the outside of the spindle to support the spindle.

[0035] As an embodiment of the present invention, Figure 3-5 As shown: the power connection mechanism 7 includes a fixed mounting plate 71 fixed on the electric spindle mounting sleeve 23, and an electrical connection plate 72 is fixed to the front end of the fixed mounting plate 71. The fixed connection structure of the fixed mounting plate 71 and the extended electrical connection plate 72 are both made of insulating material. A carbon plate slot 73 is provided in the electrical connection plate 72, and a sliding carbon plate 76 is slidably fitted in the carbon plate slot 73. A terminal block 75 for electrical connection of the sliding carbon plate 76 and an adjusting screw 74 for position adjustment of the sliding carbon plate 76 are fixed on the electrical connection plate 72. A spring is provided between the sliding carbon plate 76 and the carbon plate slot 73, and the spring is sleeved on the outer wall of the adjusting screw 74. A limiting cover plate 78 for limiting the sliding carbon plate 76 is fixed to one end face of the electrical connection plate 72.

[0036] During specific operation, the distance between the sliding carbon plate 76 and the electric spindle 4 is adjusted by adjusting the screw 74. During the adjustment process, the display value of the instrument module is controlled after power is turned on to adjust the appropriate distance.

[0037] As an embodiment of the present invention, Figure 4-6 As shown, a limit slot 761 is defined at the bottom of the sliding carbon plate 76. A rotation slot 762 is defined at one corner of the limit slot 761. A movable carbon brush 77 is positioned within the limit slot 761 and the rotation slot 762. The movable carbon brush 77 comprises a carbon brush body 771 that is movably mounted within the rotation slot 762. A circular protrusion 772 is provided at the end of the carbon brush body 771 to limit its rotation. The circular protrusion 772 and the rotation slot 762 form a mating mechanism. One end of the carbon brush body 771 is angled, so that when mated with the electric spindle 4, the front end tilts up and the rear end fits in contact.

[0038] During operation, the movable carbon brush 77 cooperates with the limiting groove 761 and the rotating slot 762. The movable carbon brush 77 can deflect counterclockwise around the rotating slot 762. Under the action of gravity, it naturally droops and fits the electric spindle 4. The tilt angle set at its front end is tilted, such as Figure 4 As shown, when adjusting the position of the sliding carbon plate 76, the movable carbon brush 77 is naturally in contact with the electric spindle 4 at its end. When the electrolyte spraying mechanism 6 sprays electrolyte, the electrolyte continuously flows along the electric spindle 4 from the tilted end of the movable carbon brush 77 to the other end. Driven by the electrolyte, the carbon brush body 771 deflects around the circular protrusion 772 to separate from the electric spindle 4 and reaches a stable state under the limit of the limit groove 761. In this way, the distance adjustment between the electric spindle 4 and the power connection mechanism 7 can be completed quickly. In addition, when the electrolyte supply stops, the movable carbon brush 77 can automatically adjust to contact with the end of the electric spindle 4, so that the electric spindle 4 can be kept clean after processing is completed and the clean dirt can be flushed out when it is restarted.

[0039] As an embodiment of the present invention, Figure 6 As shown, a plurality of arc-shaped guide grooves 773 are provided at the bottom of the carbon brush body 771. When the electrolyte spraying mechanism 6 sprays the electrolyte, the electrolyte flows into the arc-shaped guide grooves 773 along the tilted end of the movable carbon brush 77. The arc-shaped wall of the arc-shaped guide grooves 773 increases the angle between the movable carbon brush 77 and the electrolyte and the liquid flow direction, thereby enabling the movable carbon brush 77 to be pushed stably. Secondly, the additional arc-shaped guide grooves 773 can increase the contact area between the movable carbon brush 77 and the electrolyte and the liquid flow, and can always keep the liquid flow in the plurality of arc-shaped guide grooves 773, thereby increasing the conductive stability.

[0040] As an embodiment of the present invention, Figure 1-3The electrolyte spray mechanism 6 shown includes a pipe fixing bracket 62 fixed to the upper end surface of the spindle fixing bracket 1. An electrolyte pipe 61 is fixed to the pipe fixing bracket 62. An energized spray port 63 is provided on the electrolyte pipe 61, corresponding to the point where the energized connection mechanism 7 and the motorized spindle 4 meet. The electrolyte pipe 61 is connected to an external electrolyte supply pump. The front end of the electrolyte pipe 61, corresponding to the copper electrode 5, is also connected to an electrolyte spray device for discharging the copper electrode 5.

[0041] The working principle and use process of the utility model are as follows: the distance between the power connection mechanism 7 and the electric spindle 4 is adjusted, the movable carbon brush 77 cooperates with the limit groove 761 and the rotation slot 762, and the movable carbon brush 77 can deflect counterclockwise around the rotation slot 762. Under the action of gravity, it naturally droops and fits the electric spindle 4. The tilt angle set at its front end is tilted, such as Figure 4 As shown, when adjusting the position of the sliding carbon plate 76, the movable carbon brush 77 is naturally in contact with the electric spindle 4 at its end. When the electrolyte spraying mechanism 6 sprays electrolyte, the electrolyte continuously flows along the electric spindle 4 from the tilted end of the movable carbon brush 77 to the other end. Driven by the electrolyte, the carbon brush body 771 deflects around the circular protrusion 772 to separate from the electric spindle 4 and reaches a stable state under the limit of the limit groove 761. In this way, the distance adjustment between the electric spindle 4 and the power connection mechanism 7 can be completed quickly. In addition, when the electrolyte supply stops, the movable carbon brush 77 can automatically adjust to contact with the end of the electric spindle 4, so that the electric spindle 4 can be kept clean after processing is completed and the clean dirt can be flushed out when it is restarted.

[0042] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements shall fall within the scope of the present invention as claimed.

Claims

1. A metal bond grinding wheel discharge shaping device, comprising: A spindle fixing seat (1) is fixed on the X-axis platform of the horizontal grinding machine and is used for discharge, electrode processing and grinding wheel discharge shaping; A main shaft fixing and rotating mechanism (2), which is a driving mechanism and is installed in the main shaft fixing seat (1); An electric spindle (4) is fixed to the output end of the spindle fixing and rotating mechanism (2) and is used for clamping electrodes and connecting electricity. A copper electrode (5) is fixed to the front end of the electric spindle (4); An electric connection mechanism (7) is fixed to the output end of the spindle fixing rotation mechanism (2) and is used to connect to the electric spindle (4) to supply power to the electric spindle (4); An insulating connecting shaft (3) is installed between the main shaft fixing and rotating mechanism (2) and the electric main shaft (4) and is used for insulating and fixing the electric main shaft (4) and the main shaft fixing and rotating mechanism (2); The invention is characterized in that: the power connection mechanism (7) is clearance-matched with the electric spindle (4); an electrolyte spraying mechanism (6) is fixed above the spindle fixed rotation mechanism (2) and is used to electrically connect the power connection mechanism (7) and the electric spindle (4).

2. The metal bond grinding wheel discharge shaping device according to claim 1, characterized in that: The main shaft fixing rotation mechanism (2) comprises a motor (22), a motor fixing sleeve (21) for fixing the motor (22), and an electric main shaft mounting sleeve (23) for assembling the main shaft.

3. The metal bond grinding wheel discharge shaping device according to claim 2, characterized in that: The power connection mechanism (7) includes a fixed mounting plate (71) fixed on the electric spindle mounting sleeve (23), an electrical connection plate (72) is fixed to the front end of the fixed mounting plate (71), a carbon plate slot (73) is provided in the electrical connection plate (72), a sliding carbon plate (76) is slidably fitted in the carbon plate slot (73), a terminal block (75) electrically connected to the sliding carbon plate (76) is fixed on the electrical connection plate (72), and an adjusting screw (74) for adjusting the position of the sliding carbon plate (76) is fixed, and a limiting cover plate (78) for limiting the sliding carbon plate (76) is fixed to one end face of the electrical connection plate (72).

4. The metal bond grinding wheel discharge shaping device according to claim 3, characterized in that: A limiting groove (761) is provided at the bottom of the sliding carbon plate (76), a rotation slot (762) is provided at a corner of the limiting groove (761), and a movable carbon brush (77) is provided in the limiting groove (761) and the rotation slot (762).

5. The metal bond grinding wheel discharge shaping device according to claim 4, characterized in that: The movable carbon brush (77) includes a carbon brush body (771) movably mounted in a rotating slot (762), one end of the carbon brush body (771) is provided with a circular protrusion (772) for limiting the rotation of the carbon brush body (771), and the circular protrusion (772) and the rotating slot (762) form a matching mechanism.

6. The metal bond grinding wheel discharge shaping device according to claim 5, characterized in that: One end of the carbon brush body (771) is provided with an inclination angle, and when it is matched with the electric spindle (4), the front end is tilted and the rear end is fitted.

7. The metal bond grinding wheel discharge shaping device according to claim 5, characterized in that: A plurality of arc-shaped guide grooves (773) are provided at the bottom of the carbon brush body (771).

8. The metal bond grinding wheel discharge shaping device according to claim 1, characterized in that: The electrolyte spraying mechanism (6) includes a pipe fixing holder (62) fixed to the upper end surface of the spindle fixing seat (1), an electrolyte pipe (61) is fixed on the pipe fixing holder (62), and an energized spraying port (63) is provided on the electrolyte pipe (61) at a matching point corresponding to the energized connection mechanism (7) and the electric spindle (4).

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