CN206254030U - A kind of resin bonded diadust phyllotaxy abrasive disk - Google Patents

Abstract

The utility model relates to a resin-consolidated diamond micropowder phyllotaxy grinding disc, the grinding disc comprises a resin matrix layer and a resin-diamond micropowder working layer at least partially forming a columnar phyllotaxy structure, and the phyllotaxy arrangement of the columnar structure satisfies the requirements based on H .The trajectory uniformity theory of the Vogel planar phyllotaxy model, that is, to satisfy θ=86°×n, where θ and r are the polar angle and polar radius of the nth columnar structure, respectively. The grinding disc of the utility model has uniform grinding track distribution and smooth cooling liquid flow, can discharge the grinding chips formed during processing in time, can greatly improve the grinding quality and grinding efficiency, and prevent the grinding disc from being blocked.

Description

A resin-consolidated diamond micropowder phyllotaxy grinding disc

technical field

The utility model relates to a diamond micropowder grinding disc, in particular to a resin-solidified diamond micropowder phyllotaxy grinding disc whose surface is arranged according to the uniform track theory and the phyllotaxy theory.

Background technique

Grinding and polishing of fixed abrasives is an important technical method for obtaining high-efficiency flatness of ceramic materials, optical crystal materials and semiconductor substrate materials. As the main consumable in the grinding and polishing process, the grinding disc plays a key role. Resin has certain elasticity and good self-sharpening; diamond has high hardness, high strength and excellent chemical stability, and the resin diamond grinding disc prepared by combining the two has good machinability and high cost performance. Therefore, the resin diamond micropowder grinding disc has become an indispensable grinding tool for processing various materials such as semiconductors, ceramics and LEDs.

In the process of plane grinding and polishing, the role of the grinding disc is to consolidate the abrasive and control the grinding track path in the processing area by adjusting parameters, so as to achieve uniform scratching and cutting with the surface of the workpiece to be processed. The surface of the existing resin grinding disc is usually provided with staggered straight grooves, inclined grooves, etc., so that the surface forms a certain chip removal groove structure, which is convenient for cooling liquid supply and grinding chip discharge during processing. Due to the different groove structures on the surface of the grinding disc, the grinding track is not uniform, and the different groove structures are also likely to cause the flow of the coolant to be unbalanced. Unbalanced precision makes it difficult to meet planarization requirements.

In order to solve the above problems, people use the classical fluid theory to calculate, and obtain the helical structure with good coolant flow balance. The kinematics principle is used to analyze and calculate the motion trajectory of a single grain and a small amount of abrasive grains, and obtain the basis for optimizing grinding parameters. Since the surface groove structure of the grinding disc comprehensively affects the results of the flow field and the trajectory field, it is often difficult to fully solve the above problems by adjusting the grinding parameters.

Utility model content

The purpose of the utility model is to make the grinding tracks evenly distributed and the cooling liquid to flow smoothly. A resin-consolidated diamond micropowder phyllotaxy grinding disc whose surface is arranged according to the uniform track theory and the phyllotaxy theory is designed. The technical scheme adopted is: A resin-bonded diamond micropowder phyllotaxy grinding disc comprises a resin matrix layer and a resin-diamond micropowder working layer arranged on the resin matrix layer, the resin-diamond micropowder working layer includes several columnar structures arranged in phyllotaxy, the The phyllotaxy arrangement of the columnar structure satisfies the trajectory uniformity theory based on the H. Wherein θ and r are the polar angle and polar diameter of the nth columnar structure respectively; wherein the particle size of the diamond micropowder is 0.1-40 μm, and the diameter of the columnar structure is 1-5 mm.

Preferably, the columnar structure is a cylinder, a regular hexagonal prism or a regular triangular prism.

Preferably, the thickness of the resin matrix layer is 15-35 mm, and the height of the columnar structure is 2-5 mm.

Preferably, the resin-diamond micropowder working layer further includes a connecting sublayer, and the connecting sublayer is arranged between the resin matrix layer and the columnar structure.

Compared with the prior art, the utility model has the beneficial effects of:

The phyllotaxic pattern of the grinding disc of the utility model can make the grinding trajectory uniform during grinding, the pressure and temperature distribution on the surface of the ground piece can be uniform, the grinding liquid can enter the grinding contact area evenly and smoothly, and the grinding waste generated by grinding can be smoothly discharged , so as to obtain a high flat macro-micro surface, which can greatly improve the grinding quality and grinding efficiency, and prevent the clogging of the grinding disc. The columnar phyllotaxy working layer has a certain thickness, can be trimmed and used repeatedly, and has a long service life.

The utility model will be further described in detail below in conjunction with the accompanying drawings and examples; however, a resin-consolidated diamond micropowder phyllotaxy grinding disc of the utility model is not limited to the examples.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the resin-consolidated diamond micropowder phyllotaxy grinding disc of the present invention;

Fig. 2 is the cross-sectional view of the utility model resin consolidated diamond micropowder phyllotaxy grinding disc;

Fig. 3 is a schematic diagram of the decomposition structure of the mold base of the present invention;

Fig. 4 is a schematic diagram of the planar structure of the phyllotaxy pressing plate of the present invention;

Fig. 5 is a schematic diagram of the manufacturing principle of the resin-consolidated diamond micropowder phyllotaxy grinding disc of the present invention.

detailed description

Referring to FIG. 1 and FIG. 2 , a resin-consolidated diamond micropowder phyllotaxy grinding disc according to an embodiment includes a resin matrix layer 1 and a resin-diamond micropowder working layer 2 disposed on the resin matrix layer 1 . The resin-diamond micropowder working layer 2 includes a connecting sublayer 21 and several columnar structures 22 arranged in phyllotaxy. The connecting sublayer 21 is covered on the resin matrix layer 1, and the plurality of columnar structures 22 are arranged on the connecting sublayer 21 at intervals, that is, the resin-diamond micropowder working layer 2 part is Continuous layered, partially formed columnar phyllotaxy. The phyllotaxy arrangement of the columnar structure 21 satisfies the trajectory uniformity theory based on the H.Vogel plane phyllotaxy model, that is, satisfies: θ=86°×n, where θ and r are the polar angle and polar radius of the nth columnar structure, respectively. The columnar phyllotaxy structure has the characteristic of uniform trajectory. In addition, in other embodiments, the columnar structure can also be directly formed on the resin matrix layer, that is, the resin-diamond micropowder working layer forms several discrete columnar structures arranged in phyllotaxy in the thickness direction. structure.

The resin-diamond micropowder working layer 2 is formed by mixing resin and diamond micropowder, wherein the particle size of the diamond micropowder is 0.1-40 μm. The thickness of the resin matrix layer 1 ranges from 15 to 35 mm, the height of the columnar structure 22 ranges from 2 to 5 mm, and the diameter ranges from 1 to 5 mm. For example, in one embodiment, the particle size of diamond micropowder is 10 μm, the thickness of the resin matrix layer 1 is 25 mm, the height of the columnar structure 22 is 3 mm, and the diameter range is 3 mm. Specifically, the columnar structure 22 may be a regular figure such as a cylinder, a regular hexagonal prism, or a regular triangular prism.

The manufacturing method of the above-mentioned resin-consolidated diamond micropowder phyllotaxy grinding disc comprises the following steps:

1) Manufacture of the mold: referring to Figure 3 to Figure 4, according to the required diameter of the grinding disc and the phyllotaxy structure, the ring baffle 3, the supporting base plate 4 and the phyllotaxy pressing plate are produced by electroforming, numerically controlled drilling and numerically controlled laser processing. 5. The flatness of the supporting base plate 4 and the phyllotaxy pressing plate 5 is less than 0.02mm, and the gap between the circular baffle plate 3 and the supporting base plate 4 and the phylloxene pressing plate 5 is 0.03mm. The arranged cylindrical holes 51 have a diameter ranging from 1 to 5 mm and a depth ranging from 2 to 5 mm.

2) Use PVAL glue to seal and fix the ring baffle 3 on the outer edge of the support base plate 4 to form a mold base, and form a grinding disc cavity inside, and evenly coat MMR2 release agent in the grinding disc cavity. After it is air-dried, put The resin mixture without diamond micropowder is injected into the cavity of the grinding disc. The resin used in this example is cold mounting resin, the curing agent used is methyltetrahydrophthalic anhydride, and the resin mixture is composed of cold mounting resin and methyltetrahydrophthalic anhydride by 1: The volume ratio configuration is 0.5-1.5, for example, the volume ratio configuration may be 1:1. Place the grinding disc cavity filled with the resin mixture in the heating equipment, and control the temperature at 60°C to 100°C for 1 to 5 minutes, for example, 70°C for 2 minutes to form a semi-cured resin matrix layer 1 .

3) Inject a resin mixture containing diamond micropowder on the surface of the semi-cured resin matrix layer 1, the mixture is composed of cold mounting resin, methyltetrahydrophthalic anhydride and diamond micropowder according to 1:(0.5～1.5):(0.3～0.8) The volume ratio is configured, and the particle size of the diamond powder is 0.1-40 μm; for example, it can be configured in a volume ratio of 1:1:0.5, and the particle size of the diamond powder is 10 μm. Control the heating temperature at 60°C to 100°C to cure for 1 to 5 minutes to form a semi-cured resin-diamond micropowder layer. Referring to Figure 5, press the phyllotaxy press plate 5, and the pressure is controlled at 5 to 15N, through the action of the phylloxene press plate 5 Make the resin-diamond micropowder layer at least partially form the columnar structure 22 arranged in the phyllotaxy, continue heating for 5 to 10 minutes to make it completely solidified, remove the ring baffle 3, the supporting base plate 4 and the phyllotaxy pressing plate 5, and remove excess Resin, trim the grinding disc to form a resin-consolidated diamond micropowder phyllotaxy grinding disc.

Above-mentioned embodiment is only used for further illustrating a kind of resin-consolidated diamond micropowder phyllotaxy grinding disc of the present utility model, but the utility model is not limited to embodiment, any technical essence of the utility model is made to above embodiment any Simple modifications, equivalent changes and modifications all fall within the scope of protection of the technical solution of the utility model.

Claims (4)

1. A resin-solidified diamond micropowder phyllotaxy grinding disc is characterized in that: it comprises a resin matrix layer and a resin-diamond micropowder working layer arranged on the resin matrix layer, and the resin-diamond micropowder working layer comprises a phyllotaxy arrangement Several columnar structures, the phyllotaxy arrangement of the columnar structure satisfies the trajectory uniformity theory based on the H.Vogel planar phyllotaxy model, that is, satisfies θ=86°×n, Wherein θ and r are the polar angle and polar diameter of the nth columnar structure respectively; wherein the particle size of the diamond micropowder is 0.1-40 μm, and the diameter of the columnar structure is 1-5 mm. 2. The resin-consolidated diamond micropowder phyllotaxy grinding disc according to claim 1, characterized in that: the columnar structure is cylindrical, regular hexagonal prism or regular triangular prism. 3. The resin-consolidated diamond micropowder phyllotaxy grinding disc according to claim 1, characterized in that: the thickness of the resin matrix layer is 15-35 mm, and the height of the columnar structure is 2-5 mm. 4. resin solidified diamond micropowder phyllotaxy grinding disc according to claim 1, is characterized in that: described resin-diamond micropowder working layer also comprises connection sublayer, and described connection sublayer is arranged on described resin matrix layer and between the columnar structures.