CN212330713U - Long service life's resin CBN emery wheel - Google Patents

Abstract

The utility model discloses a long service life resin CBN emery wheel, including the metal matrix, fix the grinding apparatus on the outer wall of metal matrix, the center of metal matrix is the through-hole, the two sides of metal matrix set up a set of bases respectively, the base is just to the through-hole and outwards protruding, the metal matrix is overlapped and is had a set of fan-shaped safety covers, the both ends of the safety cover are installed on the base through connecting the bearing, the safety cover is located emery wheel direction up; two ports of the protective cover are respectively provided with a group of rolling brushes, the top end of the protective cover is internally provided with a grinding wheel, and the grinding wheel adopts a silicon carbide grinding wheel rotating at a low speed; an oil storage bottle is erected above the grinding wheel, and an outlet of the oil storage bottle is hung above the grinding wheel; the grinding wheel and the rolling brush are both abutted against the surface of the side wall of the grinding tool. The utility model discloses a coping wheel is to the emery wheel and is simplified the maintenance of version, combines lubricated cooling oil to carry out the primary cooling simultaneously, and then reduces emery wheel wearing and tearing, improves emery wheel life.

Description

Long service life's resin CBN emery wheel

Technical Field

The utility model belongs to the technical field of the consolidation grinding apparatus, concretely relates to long service life's resin CBN emery wheel.

Background

The resin CBN grinding wheel is a grinding wheel which takes resin and a small amount of metal powder as a bonding agent and CBN (cubic boron nitride) grinding material as a working layer. The resin CBN grinding wheel has extremely high hardness, small grinding force and low grinding temperature, so that various high-hardness materials can be processed, the efficiency is high, the precision is good, the energy consumption is low, and the resin CBN grinding wheel is widely used for processing parts with high precision and high hardness.

During the grinding process of the CBN grinding wheel, the state of the working surface of the grinding wheel is continuously changed due to the abrasion of the grinding wheel, the cutting capacity of the grinding wheel is reduced along with the prolonging of the grinding time, various grinding defects are continuously generated, the grinding processing can not be continuously carried out, the grinding wheel must be dressed at the moment, the normal grinding state is recovered, and the actual grinding time of the grinding wheel between two times of dressing is called as the service life of the grinding wheel. The resin binder has good elasticity, impact resistance and polishing effect, and the grinding wheel manufactured by the resin binder has high strength, and can be used for manufacturing high-speed grinding wheels with the grinding speed higher than 52m/s and very thin grinding wheels. In addition, the resin grinding tool has good self-sharpening performance, is not easy to block, and has high grinding efficiency, low grinding roughness and low grinding temperature. Due to the series of excellent performances of the resin bond grinding tool, the resin CBN grinding wheel is widely used in the superhard grinding tool, and the resin CBN grinding wheel is mainly used for sharpening high-vanadium high-speed steel, semi-finish grinding, finish grinding and the like of tool steel, die steel stainless steel and heat-resistant alloy steel workpieces. Because the binding property of the binding agent and the CBN abrasive particles is poor, the abrasion of the grinding wheel is fast, the outline is not easy to keep, and the resin binding agent is easy to burn at high temperature. The service life of the resin CBN grinding wheel is relatively short.

The service life of the grinding wheel is an important factor influencing the grinding processing effect, and is particularly important for forming grinding. Generally, the abrasion of the grinding wheel directly reflects the service life of the grinding wheel, and the reasons include abrasion wear, oxidation wear, diffusion wear, thermal stress damage and plastic wear, and some abrasion is caused by high friction temperature, so that the holding force of the grinding material is insufficient.

SUMMERY OF THE UTILITY MODEL

To the not enough and difficult problem among the prior art, the utility model aims at providing a long service life's resin CBN emery wheel.

The utility model discloses a following technical scheme realizes:

a long-service-life resin CBN grinding wheel comprises a metal matrix and a grinding tool fixed on the outer wall of the metal matrix, wherein the center of the metal matrix is provided with a through hole, two sides of the metal matrix are respectively provided with a group of bases, the bases are over against the through hole and protrude outwards, the metal matrix is sleeved with a group of fan-shaped protective covers, two ends of each protective cover are arranged on the bases through connecting bearings, and the protective covers are positioned in the direction in which the grinding wheel faces upwards; two ports of the protective cover are respectively provided with a group of rolling brushes, the top end of the protective cover is internally provided with a grinding wheel, and the grinding wheel adopts a silicon carbide grinding wheel rotating at a low speed; an oil storage bottle is erected above the grinding wheel, and an outlet of the oil storage bottle is hung above the grinding wheel; the grinding wheel and the rolling brush are both abutted against the surface of the side wall of the grinding tool.

Furthermore, the surface of the roller brush at the front end is provided with a frosted layer.

Furthermore, the surface of the rolling brush at the rear end is provided with an adsorption layer.

Further, the fan-shaped angle radian of safety cover is 120 ~ 180.

Furthermore, the upper surface and the lower surface of the grinding tool are provided with a plurality of groups of grooves.

Further, the groove is a chute which is not coincident with the warp direction.

Compared with the prior art, the utility model discloses beneficial effect includes:

(1) the utility model adopts the grinding wheel to carry out simplified version dressing on the grinding wheel, and the grinding wheel and the resin CBN grinding wheel rotating at high speed are ground oppositely to achieve the purpose of dressing; simultaneously, the lubricating cooling oil is combined to carry out primary cooling when the primary finishing effect is carried out, namely precooling before the grinding fluid is cooled, thereby avoiding the rapid cooling of the grinding wheel under the action of the grinding fluid to form large alternating thermal stress on the surface of the abrasive particles, enabling the surface of the abrasive particles to be cracked and broken, further reducing the abrasion of the grinding wheel and prolonging the service life of the grinding wheel.

(2) The utility model discloses the round brush of still adopting the front and back end clears up the emery wheel surface, avoids granule adhesion, lubricating oil to remain, avoids its polluted environment, keeps the emery wheel surface cleaner.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a sectional view taken along a-a of fig. 1.

Illustration of the drawings: 1-metal substrate, 2-grinding tool, 3-protective cover, 4-connecting bearing, 5-oil storage bottle, 6-base, 7-grinding wheel, 8-rolling brush and 9-groove.

In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but 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 thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, integrally connected; can be mechanical connection and electrical connection; may be directly connected, indirectly connected through intervening agents, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood to be specific to those skilled in the art.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1 to 2, a resin CBN grinding wheel with long service life comprises a metal base 1 and a grinding tool 2 fixed on the outer wall of the metal base 1, wherein the grinding tool 2 uses CBN particles as grinding materials and a working layer of resin bonding agent.

The center of metal base member 1 is the through-hole, and the through-hole is the connecting hole of emery wheel and outside mechanical installation, and metal base member 1's two sides respectively sets up a set of base 6, and base 6 is just to the through-hole and outside arch, and the cover has a set of sectorial safety cover 3 on metal base member 1, and the both ends of safety cover 3 are passed through connecting bearing 4 and are installed on base 6 for the emery wheel rotates during operation, and safety cover 3 is in different states. In specific implementation, the protective cover 3 is positioned in the upward direction of the grinding wheel.

A group of rolling brushes 8 are respectively arranged at two ports of the protective cover 3, a grinding wheel 7 is arranged in the top end of the protective cover, and the rolling brushes 8 are driven wheels, namely the rolling brushes are unpowered and are driven to rotate by the rotation of a grinding wheel; the grinding wheel 7 is a driving wheel, namely a driving system is arranged on the grinding wheel, and the rotating speed of the grinding wheel is controllable. The grinding wheel 7 and the rolling brush 8 are both abutted against the surface of the side wall of the grinding tool 2 of the CBN grinding wheel.

Wherein, the grinding wheel 7 is used for carrying out simplified version trimming on the grinding wheel. The grinding wheel 7 adopts a superhard grade silicon carbide grinding wheel rotating at a low speed, and the superhard grade silicon carbide grinding wheel and the resin CBN grinding wheel rotating at a high speed are oppositely ground so as to achieve the purpose of finishing.

In order to further optimize the dressing of the grinding wheel 7, an oil storage bottle 5 is erected above the grinding wheel 7, lubricating oil is filled in the oil storage bottle 5 to play a role in lubricating and cooling, an outlet of the oil storage bottle 5 is hung above the grinding wheel 7, and the lubricating oil is dripped above the grinding wheel 7 when the grinding wheel works. Therefore, during the primary finishing action, the primary cooling is carried out, which is equivalent to precooling before the grinding fluid is cooled, so that the grinding wheel is prevented from quenching under the action of the grinding fluid, thereby forming large alternating thermal stress on the surface of the abrasive particles, and the surface of the abrasive particles is cracked and broken. The outlet of the oil storage bottle 5 is provided with a control valve to control the switch and the flow. The oil storage bottle 5 is connected with an external container (not shown) through a connecting pipe and a suction device.

The front end rolling brush 8 cleans the surface of the grinding wheel which just works to avoid the adhesion of particles so as to facilitate the work of the grinding wheel 7, and the surface of the front end rolling brush 8 is provided with a frosting layer which is more beneficial to removing impurities; the round brush 8 of rear end is wiped remaining lubricating oil, avoids its polluted environment, and the round brush 8 surface of rear end is equipped with the adsorbed layer, is favorable to adsorbing lubricating oil, and the surface is cleaner simultaneously.

The fan-shaped angle radian of the protective cover 3 is 120-180 degrees, so that the fan-shaped area of the protective cover 3 is 1/3-1/2 of a complete circle, the size of the protective cover is controlled, a sufficient area can be provided for completing protection, cooling and trimming, and the occupied area of other work areas can be avoided.

The upper surface and the lower surface of the grinding tool 2 are provided with a plurality of groups of grooves 9, which is beneficial to heat dissipation. The groove 9 is a skewed slot, i.e. it is not coincident with the warp direction, so that it covers more angles.

The foregoing merely illustrates preferred embodiments of the present invention, which are described in considerable detail and detail, but are not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several changes, modifications and substitutions can be made, which are all within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (6)

1. A long service life's resin CBN emery wheel which characterized in that: the grinding tool comprises a metal matrix and a grinding tool fixed on the outer wall of the metal matrix, wherein a through hole is formed in the center of the metal matrix, a group of bases are arranged on two sides of the metal matrix respectively, the bases are opposite to the through hole and protrude outwards, a group of fan-shaped protective covers are sleeved on the metal matrix, two ends of each protective cover are installed on the bases through connecting bearings, and the protective covers are located in the direction that a grinding wheel faces upwards; a group of rolling brushes are respectively arranged at two ports of the protective cover, and a grinding wheel is arranged in the top end of the protective cover and adopts a silicon carbide grinding wheel rotating at a low speed; an oil storage bottle is erected above the grinding wheel, and an outlet of the oil storage bottle is hung above the grinding wheel; the grinding wheel and the rolling brush are both abutted to the surface of the side wall of the grinding tool.

2. A long-life resin CBN grinding wheel as claimed in claim 1, wherein: and a frosted layer is arranged on the surface of the rolling brush at the front end.

3. A long-life resin CBN grinding wheel as claimed in claim 1, wherein: and an adsorption layer is arranged on the surface of the rolling brush at the rear end.

4. A long-life resin CBN grinding wheel as claimed in claim 1, wherein: the fan-shaped angle radian of the protective cover is 120-180 degrees.

5. A long-life resin CBN grinding wheel as claimed in claim 1, wherein: the upper surface and the lower surface of the grinding tool are provided with a plurality of groups of grooves.

6. A long-life resin CBN grinding wheel according to claim 5, characterized in that: the groove is a chute which is not coincident with the warp direction.

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