CN217572493U

CN217572493U - Large length-diameter ratio inner circle CBN grinding wheel

Info

Publication number: CN217572493U
Application number: CN202221440995.XU
Authority: CN
Inventors: 邓希庆
Original assignee: Kunshan Xinlun Superabrasives Co ltd
Current assignee: Kunshan Xinlun Superabrasives Co ltd
Priority date: 2022-06-09
Filing date: 2022-06-09
Publication date: 2022-10-14
Anticipated expiration: 2032-06-09

Abstract

The utility model discloses an interior round CBN emery wheel of big length-diameter ratio belongs to cutting process technical field, and circle CBN emery wheel in big length-diameter ratio, including the emery wheel body, the crosscut recess has been seted up to emery wheel body outer wall, and the crosscut recess is provided with a plurality ofly, adjacent two be equipped with the emery wheel unit between the crosscut recess, it can realize, and horizontal cyclic annular cell type can effectively store the coolant liquid a period, under the equal coolant liquid condition, the cooling effect is higher than ordinary vertical cell type, and the heat radiating area of horizontal cyclic annular cell type also is far greater than vertical cell type, and horizontal grooving mode has kept the original circularity of emery wheel and cylindricity, and the emery wheel that dimensional tolerance is the same completely is processed with the mode of high axiality series connection, guarantees the work piece roughness in reciprocal grinding operation, only can influence emery wheel length after a groove fracture, can remedy emergency through the reciprocal stroke of modification processing parameter increase, improves the emery wheel life-life.

Description

Large length-diameter ratio inner circle CBN grinding wheel

Technical Field

The utility model relates to a cutting process technical field, more specifically says, relates to circle CBN emery wheel in big length-diameter ratio.

Background

The grinding process is a cutting process in which the surface of a workpiece is processed by a grindstone such as a grinding wheel rotating at a high speed. The method is a common processing method in mechanical processing and has a very important position. However, the acting force is large in the grinding process, a large amount of heat is generated in the grinding process, in order to further improve the heat dissipation of the grinding wheel, the grinding technology of the grinding wheel with the surface structure is applied to grinding, and the grinding wheel with the groove structure regularly arranged can improve the grinding processing technological performance.

Researches show that the grinding force can be effectively reduced by adopting the groove structured grinding wheel for grinding, the heat dissipation capability of the grinding wheel is improved, and grinding burn is inhibited. But at present, most of the grinding wheel grooving methods at home and abroad are longitudinal grooving, and the scheme can cause the cooling liquid to be influenced by centrifugal force along the grooving direction under the working condition of high-speed rotation to run off, so that the heat dissipation effect is poor. In addition, the roundness and cylindricity of the large length-diameter ratio inner circle CBN grinding wheel are seriously influenced by the grooving mode of the longitudinal grooving of the grinding wheel, the cutting toughness is poor, cracks are easy to generate, and the surface roughness is also poor. The longitudinal cutting groove bears larger shearing force under the working condition of high-speed rotation, if the depth of the cutting groove is too large, the grinding wheel and the base body are in an approximate incomplete fit state in the circumferential direction, the strength of the grinding wheel can be greatly reduced, and the service life of the grinding wheel is shortened. The defects are particularly obvious in the aspect of grinding wheels with large length-diameter ratios, so that the large length-diameter ratio inner circle CBN grinding wheel is provided to solve the existing problems.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

To the problem that exists among the prior art, the utility model aims to provide a circle CBN emery wheel in big length-diameter ratio, it can realize that horizontal cyclic annular cell type can effectively store the coolant liquid a period, under the equal coolant liquid condition, the cooling effect is higher than ordinary vertical cell type. The heat dissipation area of horizontal annular cell type is also far greater than vertical cell type, and original circularity and cylindricity of emery wheel have been kept to horizontal grooving mode, and the emery wheel that dimensional tolerance is the same completely is processed with the mode of high axiality series connection, guarantees the work piece roughness in reciprocal grinding operation, can only influence emery wheel length after a groove fracture, can remedy emergency through revising the reciprocal stroke of processing parameter increase, improves the emery wheel life-span.

2. Technical scheme

In order to solve the above problems, the utility model adopts the following technical proposal.

The CBN grinding wheel with the large length-diameter ratio comprises a grinding wheel body, wherein transverse cutting grooves are formed in the outer wall of the grinding wheel body, a plurality of transverse cutting grooves are formed, and a grinding wheel unit is arranged between every two adjacent transverse cutting grooves; the length of the grinding wheel body is more than 2 times of the diameter.

Furthermore, the end part of the grinding wheel body is provided with a shaft hole, and the shaft hole penetrates through the grinding wheel body.

Further, a plurality of the transverse cutting grooves are distributed at equal intervals.

Further, the diameter of the root of the transverse cutting groove is larger than the aperture of the shaft hole.

Furthermore, a key groove is formed in the inner side of the shaft hole and penetrates through the shaft hole.

Furthermore, a heat dissipation clamp is installed in the transverse cutting groove, and the inner diameter of the heat dissipation clamp is the same as the outer diameter of the grinding wheel body at the position of the transverse cutting groove;

the heat dissipation clamp comprises a C-shaped clamp main body, a plurality of cooling fins are arranged on the outer surface of the clamp main body, and the clamp main body and the cooling fins are made of stainless steel.

3. Advantageous effects

Compared with the prior art, the utility model has the advantages of:

(1) In the traditional longitudinal grooving mode, two end faces in the groove are always perpendicular to the rotation direction of the grinding wheel, so that cooling liquid can be partially lost by the groove when contacting the longitudinal groove. But the transverse annular groove type can effectively store the cooling liquid for a period of time, and under the condition of the same cooling liquid, the cooling effect is higher than that of the common longitudinal groove type. The heat dissipation area of the transverse annular groove type is far larger than that of the longitudinal groove type.

(2) The scheme greatly improves the roundness, cylindricity and roughness, namely the CBN grinding wheel with large length-diameter ratio longitudinally grooving mode destroys the original roundness and cylindricity of the grinding wheel to ensure that each segment directly has slight difference, the amplified difference can obviously influence the roundness in high-speed grinding, the original roundness and cylindricity of the grinding wheel are kept in the transverse grooving mode, the grinding wheels with the same dimensional tolerance are processed in a mode of series connection with extremely high coaxiality similar to a plurality of form and position tolerances, the influence of the roundness and cylindricity of the grinding wheel caused by grooving can be effectively eliminated, and the workpiece roughness in the reciprocating grinding operation is ensured.

(3) The scheme improves the service life, the CBN grinding wheel with the large length-diameter ratio bears huge circumferential shearing force in a high-speed rotating mode, and the traditional radial grooving mode is very stiff at the weak part at the bottom of the groove and easy to break, so that the whole grinding wheel is scrapped. And the intensity of the grinding wheel in the direction is ensured by the transverse grooving mode, the problem that the whole grinding wheel is scrapped after the weak part at the bottom of the groove is broken is solved, the length of the grinding wheel can be only influenced after one groove is broken, the emergency condition can be remedied by modifying the machining parameters and increasing the reciprocating stroke, and the service life of the grinding wheel is prolonged.

Drawings

Fig. 1 is a schematic view of a three-dimensional structure of an inner round CBN grinding wheel with a large length-diameter ratio in embodiment 1 of the invention;

fig. 2 is a schematic structural view of a cross section of an inner round CBN grinding wheel with a large length-diameter ratio according to embodiment 1 of the present invention;

FIG. 3 is a structural diagram of a traditional grooving method for a grinding wheel with a large length-diameter ratio;

fig. 4 is a schematic structural view of a heat dissipation clamp according to embodiment 2 of the present invention;

fig. 5 is a structural sectional view of an inner-circle CBN grinding wheel with a large length-diameter ratio according to embodiment 2 of the invention.

The reference numbers in the figures illustrate:

1. a grinding wheel body; 2. a shaft hole; 3. transversely cutting the groove; 4. a grinding wheel unit; 5. a key slot; 6. a heat dissipation clamp; 61. a clamp main body; 62. and a heat sink.

Detailed Description

The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.

Example 1:

referring to fig. 1-3, the large length-diameter ratio inner circle CBN grinding wheel comprises a grinding wheel body 1, a plurality of transverse cutting grooves 3 are formed in the outer wall of the grinding wheel body 1, and a grinding wheel unit 4 is arranged between two adjacent transverse cutting grooves 3; the length of the grinding wheel body 1 is more than 2 times of the diameter.

Referring to fig. 1 and 2, a shaft hole 2 is formed at an end of the grinding wheel body 1, and the shaft hole 2 penetrates through the grinding wheel body 1.

Referring to fig. 1 and 2, a plurality of transverse grooves 3 are equidistantly distributed.

Referring to fig. 1 and 2, the diameter of the root of the transverse groove 3 is larger than the diameter of the shaft hole 2.

Referring to fig. 1, a key groove 5 is formed in the inner side of the shaft hole 2, the key groove 5 penetrates through the shaft hole 2, and when the rotating shaft and the shaft hole 2 are assembled, a convex key on the rotating shaft is bonded with the key groove 5 on the inner side of the shaft hole 2 to transmit torque, so that the rotating shaft is favorable for driving the grinding wheel body 1 to rotate.

In the conventional longitudinal grooving mode, two end surfaces in the groove are always perpendicular to the rotation direction of the grinding wheel, and referring to fig. 3, a part of cooling liquid is lost by the groove when contacting the longitudinal groove, but the transverse annular groove can effectively store the cooling liquid for a period of time, referring to fig. 1, and under the condition of the same cooling liquid, the cooling effect is higher than that of the common longitudinal groove; the heat dissipation area of the transverse annular groove type is far larger than that of the longitudinal groove type;

the cylindricity and the roughness are that a CBN grinding wheel with large length-diameter ratio is longitudinally grooved, referring to figure 3, the original roundness and cylindricity of the grinding wheel are damaged, so that each segment directly has slight difference, the enlarged difference can obviously influence the roundness in high-speed grinding, and the original roundness and cylindricity of the grinding wheel are kept in a transverse grooving mode, referring to figure 1, the grinding wheels with the same dimensional tolerance are processed in a mode of extremely high coaxiality series connection similarly to a plurality of form and position tolerances, the influence of the roundness and the cylindricity of the grinding wheel caused by grooving can be effectively eliminated, and the workpiece roughness in the reciprocating grinding operation is ensured;

the service life of the CBN grinding wheel is prolonged, the CBN grinding wheel with the large length-diameter ratio is rotated at a high speed to bear large circumferential shearing force, the traditional radial grooving mode enables the weak part at the bottom of the groove to be broken easily to cause the scrapping of the whole grinding wheel, the reference is made to figure 3, the transverse grooving mode enables the strength of the grinding wheel in the direction to be guaranteed, the reference is made to figure 1, the problem that the whole grinding wheel is scrapped after the weak part at the bottom of the groove is broken is solved, the length of the grinding wheel can be influenced after one groove is broken, the emergency situation can be remedied by modifying machining parameters and increasing the reciprocating stroke, and the service life of the grinding wheel is prolonged.

The working principle is as follows: the transverse grooving grinding wheel ensures longitudinal feeding and reciprocating stroke feeding while rotating at a high speed so as to ensure that the grinding wheel is completely attached to a processed surface and the roughness of the processed surface of the inner circle is ensured.

Example 2

The present embodiment provides a heat dissipation clamp 6 installed in a transverse cutting groove 3, as shown in fig. 4, the heat dissipation clamp 6 includes a C-shaped clamp main body 61, the outer surface of the clamp main body 61 is provided with a plurality of heat dissipation fins 62, and the clamp main body 61 and the heat dissipation fins 62 are both made of stainless steel.

In the present embodiment, a CBN grinding wheel with a large length-diameter ratio is provided, and as shown in fig. 5, an opening of a clamp main body 61 is slightly expanded and then clamped into a transverse cutting groove 3, so that the heat dissipation clamp 6 is installed in the transverse cutting groove 3, and the inner diameter of the heat dissipation clamp 6 is the same as the outer diameter of the grinding wheel body 1 at the position of the transverse cutting groove 3.

The above description is only the preferred embodiment of the present invention; the scope of the present invention is not limited thereto. Any person skilled in the art should also be able to cover the protection scope of the present invention by replacing or changing the technical solution and the modified concept of the present invention within the technical scope of the present invention.

Claims

1. The utility model provides a big length-diameter ratio interior round CBN emery wheel which characterized in that: the grinding wheel comprises a grinding wheel body (1), wherein transverse cutting grooves (3) are formed in the outer wall of the grinding wheel body (1), a plurality of transverse cutting grooves (3) are formed, and a grinding wheel unit (4) is arranged between every two adjacent transverse cutting grooves (3); the length of the grinding wheel body (1) is more than 2 times of the diameter.

2. The large aspect ratio inner circle CBN grinding wheel as claimed in claim 1, wherein: shaft holes (2) are formed in the end portion of the grinding wheel body (1), and the shaft holes (2) penetrate through the grinding wheel body (1).

3. The large aspect ratio inner circle CBN grinding wheel as claimed in claim 1, wherein: a plurality of the transverse cutting grooves (3) are distributed at equal intervals.

4. The large aspect ratio inner circle CBN grinding wheel as claimed in claim 1, wherein: the diameter of the root part of the transverse cutting groove (3) is larger than the aperture of the shaft hole (2).

5. The large aspect ratio inner circle CBN grinding wheel as claimed in claim 2, wherein: the key groove (5) is formed in the inner side of the shaft hole (2), and the key groove (5) penetrates through the shaft hole (2).

6. The large length to diameter ratio inner circle CBN grinding wheel as claimed in any one of claims 1 to 5, wherein:

a heat dissipation clamp (6) is installed in the transverse cutting groove (3), and the inner diameter of the heat dissipation clamp (6) is the same as the outer diameter of the grinding wheel body (1) at the position of the transverse cutting groove (3);

the heat dissipation clamp (6) comprises a C-shaped clamp main body (61), a plurality of cooling fins (62) are arranged on the outer surface of the clamp main body (61), and the clamp main body (61) and the cooling fins (62) are made of stainless steel.