CBN grinding wheel for grinding thrust surface of engine crankshaft

Abstract

The utility model belongs to the technical field of diamond grinding wheels, and particularly relates to an engine crankshaft thrust surface grinding CBN grinding wheel. The engine crankshaft thrust surface grinding CBN grinding wheel comprises a base body and a grinding layer, and is characterized in that the base body comprises a flange part, a cup body part and a bonding part which are integrally formed; the grinding layer comprises at least two grinding units, the grinding units are evenly arranged on the bonding part, and a grinding gap is formed between every two adjacent grinding units. According to the engine crankshaft thrust surface grinding CBN grinding wheel, the temperature of a grinding area can be prevented from being too high, and the grinding wheel can be prevented from being blocked and passivated by chippings.

Description

Technical Field

[0001] The utility model belongs to the technical field of diamond grinding wheels, and in particular relates to a CBN grinding wheel for grinding the thrust surface of an engine crankshaft. Background Art

[0002] The crankshaft thrust surface is one of the key parts of the engine crankshaft. Its processing quality directly affects the engine's operating performance. The grinding tool and polishing method of the thrust surface have a considerable impact on the machining quality of the thrust surface. Due to the characteristics of the vitrified bond CBN grinding wheel, the ideal crankshaft thrust surface grinding tool in practice is the vitrified bond CBN grinding wheel.

[0003] The thrust surface of the engine crankshaft often suffers from wear and burn during the grinding process. Grinding burns destroy the surface metallographic structure, reduce the strength and hardness of the surface metal, and seriously affect the wear resistance of the thrust surface and the service life of the crankshaft.

[0004] Grinding heat is the root cause of grinding burns. During grinding, the coolant and / or cooling air cannot reach the processing area in time, and the debris generated by grinding, such as the detached grinding wheel working layer and the ground workpiece material, cannot be cleaned in time, resulting in local temperature rise in the grinding area and burns. Utility Model Content

[0005] In view of this, the utility model provides a CBN grinding wheel for grinding the thrust surface of an engine crankshaft to solve part or all of the technical problems described in the background technology part of this application.

[0006] The solution provided by the utility model to solve the technical problem is:

[0007] A CBN grinding wheel for grinding the thrust surface of an engine crankshaft comprises a base body and a grinding layer, and is characterized in that:

[0008] The base comprises a flange portion, a cup portion, and a bonding portion, and the flange portion, the cup portion, and the bonding portion are integrally formed;

[0009] The grinding layer comprises at least two grinding units, the grinding units are evenly arranged on the bonding portion, and a grinding gap is formed between every two adjacent grinding units.

[0010] Preferably, the flange portion is a planar structure.

[0011] Preferably, the cup body is a conical structure.

[0012] Preferably, the bonding portion is an annular structure.

[0013] Preferably, the grinding unit has an annular structure.

[0014] Preferably, an axial hole is provided on the flange portion.

[0015] Preferably, the grinding unit is molded on the bonding portion by a vitrified bond.

[0016] Preferably, the substrate is made of hardware material, and the grinding layer is made of CBN abrasive.

[0017] Preferably, the number of grinding units is an even number.

[0018] Beneficial technical effects:

[0019] The CBN grinding wheel for grinding the thrust surface of an engine crankshaft disclosed in the present application improves the continuous grinding layer in the traditional technology into a grinding layer composed of multiple grinding units. The grinding gap between the grinding units can bring coolant and / or cooling air into the grinding area in time to avoid excessive temperature in the grinding area. At the same time, the grinding gap can also accommodate grinding debris to avoid clogging and passivation of the grinding wheel; thus, it can adapt to the grinding processing of the thrust surface of the engine crankshaft.

[0020] The technical solution and technical effects of the present application are described in detail below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 :Perspective view of the structure of CBN grinding wheel for grinding the thrust surface of engine crankshaft;

[0022] Figure 2 : Figure 1 A magnified view of part A;

[0023] Icon Description:

[0024] 10-substrate, 20-grinding layer;

[0025] 110-flange portion, 120-cup body portion, 130-adhesive portion, 140-axial hole;

[0026] 210 - grinding unit, 220 - grinding gap. DETAILED DESCRIPTION

[0027] See also Figure 1-Figure 2 The CBN grinding wheel for grinding the thrust surface of an engine crankshaft disclosed in the present application comprises a base 10 and a grinding layer 20. The base 10 is made of a hardware material, and the grinding layer 20 is a CBN abrasive layer. The base 10 is integrally formed by hardware processing, and the grinding layer 20 is fastened and formed on the base 10 by a ceramic binder.

[0028] The base 10 includes an integrally formed flange portion 110, a cup portion 120 and a bonding portion 130. The flange portion 110 is a planar structure, the cup portion 120 is a conical structure, and the bonding portion 130 is an annular structure. The cup portion 120 is located between the flange portion 110 and the bonding portion 130. The middle portion of the flange portion 110 is provided with an axial hole 140 for connecting the main shaft.

[0029] The grinding layer 20 includes 16 grinding units 210, each of which has a ring-shaped structure. A grinding gap 220 is formed between every two adjacent grinding units 210. The grinding units 210 are formed on the bonding portion 130 by a ceramic bonding agent.

[0030] Principle and effect description:

[0031] The CBN grinding wheel for grinding the thrust surface of the engine crankshaft is fixed on the working spindle of the grinding equipment, and the spindle drives the grinding wheel to rotate at high speed to generate grinding force. During the processing, the grinding gap promptly delivers the coolant to the grinding area, and at the same time, the debris and dust generated during the grinding process, such as the fallen working layer of the grinding wheel and the ground workpiece material, enter the grinding area, thereby avoiding the grinding area from being overheated and the grinding wheel from being blocked and passivated by debris.

[0032] The technical scheme and technical effects of the present application are described in detail above in combination with the drawings and specific embodiments of the specification. It should be noted that technicians in this field can also develop other embodiments on this basis; any simple deformation and equivalent substitution that does not deviate from the innovative concept of the present application are covered by the present application and belong to the scope of protection of this patent.

Claims

1. A CBN grinding wheel for grinding the thrust surface of an engine crankshaft, comprising a base (10) and a grinding layer (20), characterized in that: The base (10) comprises a flange portion (110), a cup body portion (120), and an adhesive portion (130), wherein the flange portion (110), the cup body portion (120), and the adhesive portion (130) are integrally formed; The grinding layer (20) comprises at least two grinding units (210), the grinding units (210) are evenly arranged on the bonding portion (130), and a grinding gap (220) is formed between every two adjacent grinding units (210).

2. The CBN grinding wheel for grinding the thrust surface of an engine crankshaft according to claim 1, characterized in that: The flange portion (110) is a planar structure.

3. The CBN grinding wheel for grinding the thrust surface of an engine crankshaft according to claim 1, characterized in that: The cup body (120) is a conical structure.

4. The CBN grinding wheel for grinding the thrust surface of an engine crankshaft according to claim 1, characterized in that: The bonding portion (130) is an annular structure.

5. The CBN grinding wheel for grinding the thrust surface of an engine crankshaft according to claim 1, characterized in that: The grinding unit (210) has an annular structure.

6. The CBN grinding wheel for grinding the thrust surface of an engine crankshaft according to claim 1, characterized in that: The number of the grinding units (210) is an even number.

7. The CBN grinding wheel for grinding the thrust surface of an engine crankshaft according to any one of claims 1 to 6, characterized in that: The flange portion (110) is provided with an axial hole (140).

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