Single-layer electroplated grinding wheel and preparation method thereof

Abstract

The invention discloses a single-layer electroplated grinding wheel and a preparation method thereof, the single-layer electroplated grinding wheel comprises an electroplated substrate and a grinding material, a fixing ring is arranged on the outer edge of the electroplated substrate, a plurality of through holes are formed in the surface of the fixing ring, and the grinding material is combined to the outer edge of the fixing ring through electroplating. According to the grinding material, the fixing ring and the through hole are arranged on the electroplated grinding wheel base body, the bonding area between the grinding material and the base body is increased, and the holding force of coating metal on the grinding material is increased. The coating thickness is reduced while the holding force is increased, the exposed height of abrasive particles is increased, the chip containing space is enlarged, the grinding wheel is prevented from being blocked, the heat dissipation effect is good, and the surface of a workpiece is prevented from being burnt.

Description

Technical Field

[0001] The invention relates to the technical field of electroplated grinding wheels, and in particular to a single-layer electroplated grinding wheel and a preparation method thereof. Background Art

[0002] The electroplated stone grinding wheel is a diamond grinding wheel made by electrochemical method. The working layer of the grinding wheel contains diamond abrasive grains, and the diamond abrasive is bonded to the substrate by a metal binder.

[0003] The sanding of single-layer electroplated grinding wheel is to consolidate the abrasive in the metal coating through the electroprecipitation of electroplated metal. It is simple to prepare, has good edge quality, strong cutting ability, and does not require dressing. However, in order to increase the holding force of the coating metal on the abrasive, the coating thickness must be increased, which reduces the exposed height of the abrasive grains and the chip space, resulting in easy clogging of the grinding wheel, poor heat dissipation, and easy burns on the workpiece surface.

[0004] Therefore, how to provide a single-layer electroplated grinding wheel and a preparation method thereof to solve the problems existing in the prior art is of great significance to its application. Summary of the invention

[0005] In view of this, the purpose of the present application is to provide a single-layer electroplated grinding wheel and a preparation method thereof, so as to solve the problem that in order to increase the holding force of the plated metal on the abrasive, the thickness of the coating must be increased, which reduces the exposed height of the abrasive and reduces the chip space, resulting in easy clogging of the grinding wheel, poor heat dissipation, and easy burning of the workpiece surface.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The single-layer electroplated grinding wheel comprises an electroplated substrate and abrasives. A fixing ring is arranged on the outer periphery of the electroplated substrate, a plurality of through holes are opened on the surface of the fixing ring, and the abrasives are combined with the outer periphery of the fixing ring by electroplating.

[0008] The preparation method of the single-layer electroplated grinding wheel is characterized by:

[0009] S1. Use CNC to process the fixing ring and through hole on the electroplated substrate;

[0010] S2, prepare electroplating solution;

[0011] S3, fixing the electroplated substrate processed in S1 on a rotating shaft, embedding the electroplated substrate into the electroplating solution in the upper sand tank, driving the rotating shaft to rotate intermittently by a motor, completing abrasive electroplating on the electroplated substrate, and obtaining an electroplated grinding wheel;

[0012] Preferably, the electroplating solution comprises an electroplating system and an abrasive.

[0013] Preferably, the electroplating system contains 200-300 g / L nickel sulfate heptahydrate, 25-65 g / L nickel chloride hexahydrate, 30-65 g / L boric acid, 0.2-1 g / L saccharin, 0.3-0.7 g / L 1,4-butanediol, and 0.2-0.5 g / L sodium dodecyl sulfate in 1 L of water.

[0014] Preferably, the abrasive in the electroplating solution is CBN / diamond abrasive or silicon carbide.

[0015] Preferably, in S3, the rotating shaft rotates once every 20-30 minutes, and the rotation angle is 60-120°.

[0016] Preferably, the electroplating conditions in S3 are 1-4 A / dm 2 electroplating for 1-2 h, and the electroplating temperature is 40-50° C.

[0017] Preferably, the electroplated substrate is a steel substrate, a copper substrate, a bronze substrate, an aluminum substrate, an aluminum alloy substrate or a cemented carbide substrate, and a plurality of the electroplated substrates are installed on a rotating shaft in parallel with gaps therebetween.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The abrasive of the present invention is provided with a fixing ring and a through hole on the electroplated grinding wheel base, so as to increase the bonding area between the abrasive and the base and increase the holding force of the plated metal on the abrasive.

[0020] 2. The present invention reduces the coating thickness while increasing the holding force, increases the exposed height of the abrasive grains, expands the chip holding space, avoids the clogging of the grinding wheel, has a good heat dissipation effect, and prevents the workpiece surface from being burned.

[0021] 3. The present invention can process and shape multiple electroplated grinding wheels at one time, and has high processing efficiency.

[0022] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application so that it can be implemented in accordance with the contents of the specification, and to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following is a detailed description of the preferred embodiments of the present application in conjunction with the accompanying drawings as follows.

[0023] Based on the detailed description of the specific embodiments of the present application in combination with the accompanying drawings below, those skilled in the art will become more aware of the above and other objects, advantages and features of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0025] Figure 1 It is a structural schematic diagram of the present invention;

[0026] Figure 2 It is a schematic structural diagram of the electroplating substrate in the present invention.

[0027] In the figure: 1. Electroplating substrate; 2. Abrasive. DETAILED DESCRIPTION

[0028] To make the purpose, technical scheme and advantages of the embodiment of the present application clearer, the technical scheme in the embodiment of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the present application. Obviously, the described embodiment is a part of the embodiment of the present application, rather than all of the embodiments. In the following description, specific details such as specific configuration and components are provided only to help fully understand the embodiments of the present application. Therefore, it should be clear to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, for clarity and brevity, the description of known functions and structures is omitted in the embodiment.

[0029] In addition, the present application may repeat reference numerals and / or letters in different examples. This repetition is for the purpose of simplicity and clarity, and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0030] The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist at the same time. The term " / and" in this article describes another type of association object relationship, indicating that there can be two relationships. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the previous and next associated objects are in an "or" relationship.

[0031] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusions.

[0032] Reference Figure 1-2 The single-layer electroplated grinding wheel provided by the present invention comprises 1 electroplated substrate and 2 abrasives. The outer periphery of the electroplated substrate 1 is provided with a fixing ring, a surface of the fixing ring is provided with a plurality of through holes, and the abrasives 2 are bonded to the outer periphery of the fixing ring by electroplating.

[0033] Electroplating substrate: The disc-shaped steel substrate has a diameter of 100-200 mm and a thickness of 12-20 mm. A fixing ring is processed on the electroplating substrate using CNC. The width of the fixing ring is 10-15 mm, the thickness of the fixing ring is 5-8 mm, the diameter of the through hole is 3-5 mm, the through holes are evenly distributed in a ring shape, and the number of through holes is 20-30.

[0034] Embodiment 1:

[0035] Producing an electroplating substrate;

[0036] The base has a diameter of 100 mm and a thickness of 12 mm. The base is mounted on a CNC processing device, and a fixed ring with a width of 10 mm and a thickness of 5 mm is processed on its outer surface. A drill with a diameter of 3 mm is used to drill 20 holes on the surface of the fixed ring. After the processing is completed, it is pickled to obtain an electroplated base.

[0037] Prepare the electroplating system: add 260 g of nickel sulfate heptahydrate, 45 g of nickel chloride hexahydrate, 45 g of boric acid, 0.5 g of saccharin, 0.5 g of 1,4-butanediol, and 0.4 g / L of sodium dodecyl sulfate into 1 L of water to form a nickel sulfate alloy electroplating system.

[0038] Put 3 steel substrates in parallel into the plating tank, which is divided into 3 upper sand troughs. The first electroplating solution (including 2 kg of abrasive each) fills the 3 upper sand troughs. The 3 substrates are connected by a rotating shaft, which rotates once every 20 minutes. The substrate rotating shaft is equipped with a motor to drive horizontal rotation, each rotation angle is 90°, 46°C, 1.5A / dm2 electroplating production for 1.5 hours, to obtain a single abrasive electroplated grinding wheel.

[0039] Embodiment 2:

[0040] Producing an electroplating substrate;

[0041] The base has a diameter of 120 mm and a thickness of 15 mm. The base is mounted on a CNC processing device, and a fixing ring with a width of 12 mm and a thickness of 8 mm is processed on its outer surface. A drill with a diameter of 4 mm is used to drill holes on the surface of the fixing ring. The number of holes is 25. After the processing is completed, pickling is performed to obtain an electroplated base.

[0042] Prepare the electroplating system: add 230 g of nickel sulfate heptahydrate, 40 g of nickel chloride hexahydrate, 40 g of boric acid, 0.3 g of saccharin, 0.3 g of 1,4-butanediol, and 0.4 g / L of sodium dodecyl sulfate into 1 L of water to form a nickel sulfate alloy electroplating system.

[0043] Put 3 steel substrates in parallel into the plating tank, which is divided into 3 upper sand troughs. The first electroplating solution (including 1.5 kg of abrasive each) fills the 3 upper sand troughs. The 3 substrates are connected by a rotating shaft, which rotates once every 20 minutes. The substrate rotating shaft is equipped with a motor to drive horizontal rotation, each rotation angle is 90°, and the electroplating production is carried out at 46°C and 1A / dm2 for 2 hours to obtain a single abrasive electroplated grinding wheel.

[0044] Embodiment 3:

[0045] Producing an electroplating substrate;

[0046] The base body has a diameter of 180 mm and a thickness of 118 mm. The base body is mounted on a CNC processing device, and a fixing ring with a width of 15 mm and a thickness of 8 mm is processed on its outer surface. A drill with a diameter of 5 mm is used to drill holes on the surface of the fixing ring. The number of holes is 30. After the processing is completed, pickling is performed to obtain an electroplated base body.

[0047] Prepare the electroplating system: add 240 g of nickel sulfate heptahydrate, 40 g of nickel chloride hexahydrate, 35 g of boric acid, 0.4 g of saccharin, 0.4 g of 1,4-butanediol, and 0.4 g / L of sodium dodecyl sulfate into 1 L of water to form a nickel sulfate alloy electroplating system.

[0048] Put 3 steel substrates into the plating tank in parallel. The first plating tank is divided into 3 upper sand tanks. The electroplating liquid (including 1.5 kg of abrasive each) fills the 3 upper sand tanks. The 3 substrates are connected by a rotating shaft and rotate once every 20 minutes. The substrate rotating shaft is equipped with a motor to drive horizontal rotation. Each rotation angle is 90°. The electroplating production is carried out at 46°C and 1A / dm2 for 2 hours to obtain a single abrasive electroplated grinding wheel for specific use.

[0049] Through the above-mentioned embodiments 1 to 3, the bonding area between the abrasive and the substrate is increased, thereby increasing the holding force of the coating metal on the abrasive. While increasing the holding force, the coating thickness is reduced, the exposed height of the abrasive is increased, the chip space is expanded, the clogging of the grinding wheel is avoided, the heat dissipation effect is good, and the burns on the workpiece surface are prevented.

[0050] The above description is only the preferred embodiment of the present invention, which does not limit the protection scope of the present invention. For those skilled in the art, the present invention can be modified and varied in various ways. Within the spirit and principle of the present invention, any change, modification, replacement, integration and parameter change of these embodiments by conventional substitution or capable of achieving the same function without departing from the principle and spirit of the present invention shall fall within the protection scope of the present invention.

Claims

1. Single-layer electroplated grinding wheel, characterized by: The invention comprises an electroplating substrate and abrasives. A fixing ring is arranged on the outer periphery of the electroplating substrate. A plurality of through holes are opened on the surface of the fixing ring. The abrasives are combined with the outer periphery of the fixing ring through electroplating.

2. A method for preparing a single-layer electroplated grinding wheel, characterized in that: S1. Use CNC to process the fixing ring and through hole on the electroplated substrate; S2, prepare electroplating solution; S3, fix the electroplated substrate processed in S1 on the rotating shaft, embed the electroplated substrate into the electroplating solution in the upper sand tank, drive the rotating shaft to rotate intermittently by the motor, complete the abrasive electroplating on the electroplated substrate, and obtain the electroplated grinding wheel.

3. The method for preparing the single-layer electroplated grinding wheel according to claim 1, characterized in that: The electroplating solution comprises an electroplating system and an abrasive.

4. The method for preparing the single-layer electroplated grinding wheel according to claim 2, characterized in that: The electroplating system contains 200-300 g / L nickel sulfate heptahydrate, 25-65 g / L nickel chloride hexahydrate, 30-65 g / L boric acid, 0.2-1 g / L saccharin, 0.3-0.7 g / L 1,4-butanediol, and 0.2-0.5 g / L sodium dodecyl sulfate in 1 L of water.

5. The method for preparing the single-layer electroplated grinding wheel according to claim 2, characterized in that: The abrasive in the electroplating solution is CBN / diamond abrasive or silicon carbide.

6. The method for preparing the single-layer electroplated grinding wheel according to claim 2, characterized in that: In S3, the rotation axis rotates once every 20-30 minutes, and the rotation angle is 60-120°.

7. The method for preparing the single-layer electroplated grinding wheel according to claim 2, characterized in that: The electroplating conditions in S3 are 1-4A / dm2 electroplating for 1-2h and the electroplating temperature is 40-50℃.

8. The method for preparing a double-abrasive electroplated grinding wheel according to claim 2, characterized in that: The electroplating substrate is a steel substrate, a copper substrate, a bronze substrate, an aluminum substrate, an aluminum alloy substrate or a hard alloy substrate, and a plurality of the electroplating substrates are installed on a rotating shaft in parallel with gaps therebetween.

Images