Grinding wheel electroplating device

Abstract

The utility model provides a grinding wheel electroplating device which comprises an electroplating tank, a supporting seat and an anode plate, the supporting seat and the anode plate are arranged in the electroplating tank, electroplating liquid is contained in the electroplating tank, a grinding wheel base body to be electroplated is placed on the supporting seat, the side wall of the grinding wheel base body is arc-shaped, and an upper sand ring matched with the arc-shaped side wall of the grinding wheel base body is arranged on the outer side of the grinding wheel base body in a surrounding mode. A gap used for containing sand is formed between the grinding wheel base body and the upper sand ring. According to the sand feeding device, the uniformity of sand feeding can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding wheel manufacturing, in particular to a grinding wheel electroplating device. Background Art

[0002] Ferrite magnets are the main electronic components in DC motors. Their processing and assembly accuracy directly affects the quality of the motor, especially for large R (radius over 50mm) magnets, which have more stringent size requirements. Electroplating is usually used to manufacture parallel arc diamond grinding wheels for forming grinding of the inner and outer arc surfaces of magnets. Electroplated diamond grinding wheels have the characteristics of high matrix strength, high abrasive holding force, good shape retention, and high grinding efficiency.

[0003] However, manufacturing electroplated diamond grinding wheels is a complicated process. The accuracy and coating quality of electroplated grinding wheels are affected by many factors and often fail to meet the use requirements, especially for large curved grinding wheels with special shapes. Affected by the edge effect, it is difficult to control the dimensional accuracy of the product after grinding if the R size exceeds 50mm. The bottom surface of the concave arc outer diameter grinding wheel substrate is not easy to sand, while the sand on the two edge parts will be very thick; the top surface of the convex arc inner diameter grinding wheel substrate is also not easy to sand, and the un-sanded part is prone to "burning" when grinding magnetic tiles, affecting the customer's assembly and use effect. Utility Model Content

[0004] The utility model aims to solve the defects in the prior art and provide a grinding wheel electroplating device which can achieve uniformity of sanding.

[0005] To achieve the above-mentioned purpose, the utility model provides a grinding wheel electroplating device, including a plating tank, a support seat and an anode plate arranged in the plating tank, the plating tank contains electroplating liquid, a grinding wheel base to be electroplated is placed on the support seat, the side wall of the grinding wheel base is arc-shaped, an upper sand ring matching the arc of the side wall is arranged around the outer side of the grinding wheel base, and a gap for placing sand is arranged between the grinding wheel base and the upper sand ring.

[0006] The utility model places the grinding wheel base on the support seat. When sanding, the current density is first adjusted to a low level, the upper sanding ring is clamped in the groove of the support seat, the upper sanding ring is arranged outside the grinding wheel base, and then the sand is placed in the gap between the grinding wheel base and the upper sanding ring and filled, and the gap is kept for a period of time before the sand can be unloaded; when unloading the sand, special care should be taken to slowly take the sanded grinding wheel base out of the plating tank and put it into the sand unloading basin, untie the upper sanding ring, and use the electroplating liquid to wash away the excess sand, so that the arc surface of the grinding wheel base can evenly adhere to a layer of diamond. When plating the inner diameter grinding wheel base, replace the upper sanding ring that matches the side wall of the inner diameter grinding wheel base.

[0007] The utility model ensures the uniformity of sand application by making the upper sanding ring into an arc shape matching the side wall shape of the grinding wheel base, avoids the phenomenon that the sand on both sides of the outer diameter grinding wheel base is too thick and the arc top of the inner diameter grinding wheel base is easy to be "burned", and the large R magnetic tile electroplated grinding wheel ground out has a good grinding effect.

[0008] Optionally, the upper sand ring is provided with a plurality of through holes to facilitate the generation of an anode reaction, so that nickel molecules can better enter the gap between the upper sand ring and the grinding wheel substrate.

[0009] Optionally, the shape of the anode plate matches the shape of the side wall of the grinding wheel base.

[0010] Optionally, a protective plate is provided at the end of the support seat to prevent the grinding wheel base from falling.

[0011] Optionally, the support seat is arranged in the plating tank through a hanger.

[0012] Beneficial effects:

[0013] The utility model places the grinding wheel base on the support seat. When sanding, the current density is first adjusted to a low level, the upper sanding ring is clamped in the groove of the support seat, the upper sanding ring is arranged outside the grinding wheel base, and then the sand is placed in the gap between the grinding wheel base and the upper sanding ring and filled, and the gap is kept for a period of time before the sand can be unloaded; when unloading the sand, special care should be taken to slowly take the sanded grinding wheel base out of the plating tank and put it into the sand unloading basin, untie the upper sanding ring, and use the electroplating liquid to wash away the excess sand, so that the arc surface of the grinding wheel base can evenly adhere to a layer of diamond. When plating the inner diameter grinding wheel base, replace the upper sanding ring that matches the side wall of the inner diameter grinding wheel base.

[0014] The utility model ensures the uniformity of sand application by making the cross section of the upper sanding ring into an arc shape matching the side wall shape of the grinding wheel base, avoids the phenomenon that the sand on both sides of the outer diameter grinding wheel base is too thick and the arc top of the inner diameter grinding wheel base is easy to be "burned", and the large R magnetic tile electroplated grinding wheel ground out has a good grinding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0016] Figure 1 It is a structural diagram of the grinding wheel electroplating device disclosed in the utility model;

[0017] Figure 2 It is a structural diagram of the inner diameter grinding wheel base in the grinding wheel electroplating device disclosed in the utility model;

[0018] Figure 3 It is a structural diagram of an outer diameter grinding wheel substrate in the grinding wheel electroplating device disclosed in the utility model.

[0019] Figure numerals: 1 plating tank; 2 electroplating solution; 3 support seat; 4 hanger; 5 anode plate; 6 grinding wheel base; 7 upper sanding ring; 8 sand.

[0020] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with the implementation methods and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0021] 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 embodiments of 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.

[0022] In the description of the present utility model, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present utility model based on the specific content of the technical solution.

[0023] In the description of the present invention, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0024] See also Figure 1-3 According to an embodiment of the utility model, a grinding wheel electroplating device includes a plating tank 1, a support seat 3 and an anode plate 5 arranged in the plating tank 1, the plating tank 1 contains an electroplating liquid 2, a grinding wheel base 6 to be electroplated is placed on the support seat 3, the side wall of the grinding wheel base 6 is arc-shaped, and an upper sand ring 7 matching the arc of the side wall is arranged around the outer side of the grinding wheel base 6, and a gap for placing sand 8 is arranged between the grinding wheel base 6 and the upper sand ring 7.

[0025] Specifically, the grinding wheel is used to grind the inner / outer arc surface of the magnetic tile. The grinding wheel base 6 is placed on the support seat 3. When grinding, the current density is first lowered to 0.5A / dm 2, install the upper sand ring 7 in the groove of the support seat 3, the upper sand ring 7 is set outside the grinding wheel base 6, and then put the sand 8 in the gap between the pre-plated grinding wheel base 6 and the upper sand ring 7 and fill it up, keep it for 30 minutes, and then the sand can be unloaded; be particularly careful when unloading the sand, slowly take the sanded grinding wheel base 6 out of the plating tank 1, put it into the sand unloading basin, untie the upper sand ring 7, and use the plating liquid to wash away the excess sand, and the arc surface of the grinding wheel base 6 can evenly stick a layer of diamond. When plating the inner diameter grinding wheel, replace the upper sand ring that matches the side wall of the inner diameter grinding wheel base.

[0026] The cross-section of the upper sanding ring 7 of the utility model is made into an arc shape that matches the side wall shape of the grinding wheel base 6, which ensures the uniformity of sanding and avoids uneven sanding on the arc surface of the outer diameter or inner diameter grinding wheel base, which causes the unsanded or thinly sanded parts to be "burned" when grinding magnetic tiles, thereby ensuring the grinding effect of the large R magnetic tile electroplated grinding wheel manufactured by the utility model.

[0027] After the sanding is completed, a long period of thickening plating is carried out, and the current density is 1.0-1.2A / dm 2 , the protective cathode method is adopted, that is, after electroplating thickening for 1 hour, two plastic rings are used to clamp the two ends of the arc surface of the outer diameter or inner diameter grinding wheel substrate; the ring is removed after 2 hours of plating, and the thickening is continued until the coating reaches 70% to 80% of the average particle size of the sand 8, so that protective surfaces 9 are formed at both ends of the arc surface of the outer diameter or inner diameter grinding wheel substrate 6 to prevent the edge effect of the electric line.

[0028] In this embodiment, the conventional electroplating Ni-Co alloy electroplating liquid process technology is adopted, and the pretreatment process of the grinding wheel base 6 is: alkali solution degreasing - pickling - insulation treatment - clamping - acetone brushing - electrochemical degreasing - anode activation - charged into the groove, which is used to increase the bonding force between the grinding wheel base 6 and the sand 8. Due to the complex shape, heavy weight and high dimensional accuracy of the grinding wheel base, the buried sand method is adopted, and the sand 8 is made of artificial diamond MBD6120#, which is strictly surface cleaned and hydrophilic before use.

[0029] See also Figure 1 In some embodiments of the present utility model, the upper sand ring 7 is provided with a plurality of through holes.

[0030] In this embodiment, the upper sanding ring 7 used is made of a 2 mm thick hard polyvinyl chloride plate that is softened by heating and formed into a circular arc surface. The interface is not welded to facilitate sand removal. As many 3-5 mm through holes as possible are drilled on the surface of the upper sanding ring 7 to facilitate the generation of an anode reaction, so that nickel molecules can better enter the gap between the upper sanding ring 7 and the grinding wheel base 6, and the surface of the upper sanding ring 7 is wrapped with a single layer of nylon cloth.

[0031] See also Figure 1In some embodiments of the present invention, the shape of the anode plate 5 matches the shape of the side wall of the grinding wheel base 6 .

[0032] See also Figure 1 In some embodiments of the present invention, a protective plate is provided at the end of the support seat 3 to prevent the grinding wheel base 6 from falling.

[0033] See also Figure 1 In some embodiments of the present invention, the support seat 3 is arranged in the plating tank 1 through the hanger 4.

[0034] In this embodiment, the inner and outer arc dimensions of the magnetic tiles ground by two sets of grinding wheels produced by the above-mentioned grinding wheel electroplating device are shown in Table 1.

[0035] The first set of grinding wheels includes an inner diameter grinding wheel with a radius of 76.2 mm and an outer diameter grinding wheel with a radius of 84.25 mm; the second set of grinding wheels includes an inner diameter grinding wheel with a radius of 133.5 mm and an outer diameter grinding wheel with a radius of 139.5 mm.

[0036] Table 1 Inner and outer arc dimensions of magnetic tiles

[0037]

[0038] It can be seen from the above table that after the magnetic tiles are ground by two sets of grinding wheels, the grinding dimensions of the inner and outer arcs of the magnetic tiles are stable and the accuracy is within the range of ±0.05mm. The electroplated grinding wheel for grinding large R magnetic tiles manufactured by the grinding wheel electroplating device of the utility model has low manufacturing cost, good product grinding effect and long service life.

Claims

1. A grinding wheel electroplating device, characterized in that: The invention comprises a plating tank, a support seat and an anode plate arranged in the plating tank, wherein the plating tank contains electroplating liquid, a grinding wheel base to be electroplated is placed on the support seat, the side wall of the grinding wheel base is arc-shaped, an upper sanding ring matching the arc of the side wall is arranged around the outer side of the grinding wheel base, and a gap for placing sand is arranged between the grinding wheel base and the upper sanding ring.

2. The grinding wheel electroplating device according to claim 1, characterized in that: The upper sand ring is provided with a plurality of through holes.

3. The grinding wheel electroplating device according to claim 1, characterized in that: The shape of the anode plate matches the shape of the side wall of the grinding wheel base.

4. The grinding wheel electroplating device according to claim 1, characterized in that: A protective plate for preventing the grinding wheel base from falling is provided at the end of the supporting seat.

5. The grinding wheel electroplating device according to claim 1, characterized in that: The supporting seat is arranged in the plating tank through a hanger.

Images