CN201082520Y - Grinding wheel structure - Google Patents

Abstract

The utility model discloses a grinding wheel structure, its grinding wheel is provided with the first abrasive material layer of considerable thickness in a terminal surface of core, make contained angle between this first abrasive material layer cutting end face and cutting periphery be ninety degrees, in order to provide the usefulness of repairing milling cutter or drill bit bottom cutting edge, and the core encircles in addition and is equipped with the second abrasive material layer, this second abrasive material layer has cutting end face and cutting conical surface, and form an acute angle portion that is less than ninety degrees between the two, this acute angle portion can insert milling cutter or bore chip groove and repair the clearance angle of circumference cutting edge, in addition, the granularity on this second abrasive material layer is thicker than first abrasive material layer, make its cutting conical surface, the repair bottom cutting edge that acute angle portion can be quick, the clearance angle, according to so that the utility model discloses the grinding wheel has the convenience of all-round grinding milling cutter or drill bit.

Description

Grinding wheel structure

technical field

The utility model relates to a grinding wheel structure.

Background technique

"If you want to do a good job, you must first sharpen your tools." Cutting with a sharp drill or milling cutter not only saves time and effort, but also makes it easier to control the accuracy. However, even the sharpest drill or milling cutter will not be used continuously It will still become pure gradually, so the cutting edge of the drill bit or milling cutter must be trimmed with a grinding wheel, so as to maintain the drill bit or milling cutter in the best sharp state at all times.

Nowadays, the grinding wheel is driven by a motor and rotates around the center. The grinding wheel has a cutting end surface perpendicular to the center and a cutting circumferential surface equidistantly rotating around the center. Generally speaking, it is not too difficult to dress the bottom edge of the drill or milling cutter with this grinding wheel. The biggest difficulty lies in dressing the peripheral edge of the drill or milling cutter, because the circumference Most of the blades are set along the helical flute, and there is a radial clearance angle and a radial clearance angle between the circumferential blade and the flute. Therefore, it is necessary to grind the clearance angle if the circumferential blade is to be corrected. The angle between the cutting end surface and the cutting peripheral surface of the current grinding wheel is 90 degrees. It is difficult to insert and trim the clearance angle along the chip flute, resulting in the inability to trim the peripheral edge smoothly and effectively, so that the drill bit or milling cutter cannot maintain the best sharp condition.

Utility model content

The purpose of the utility model is to provide a grinding wheel structure which can effectively repair the peripheral cutting edge of the drill bit or milling cutter, so as to keep the drill bit or milling cutter in the best sharp state.

In order to achieve the above object, the solution of the utility model is: a grinding wheel structure, the grinding wheel is composed of a core, a first abrasive layer and a second abrasive layer; the core has a center of rotation and two ends, the second An abrasive layer is arranged on an end surface of the core, the first abrasive layer forms a cutting end surface and a cutting peripheral surface; a second abrasive layer ring is arranged on the outer periphery of the core, and the second abrasive layer has a cutting end surface and a cutting cone surface, and an acute angle less than 90 degrees is formed between the cutting end face and the cutting conical surface.

The included angle between the cutting end surface and the cutting circumferential surface of the first abrasive layer is 90 degrees.

The particle size of the second abrasive layer is coarser than that of the first abrasive layer.

The center of the core is provided with a middle hole for being driven by the drive shaft to rotate around the center.

The core has two vertical center end faces, an annular shoulder is recessed between one end face and the outer periphery, and the first abrasive layer is fixed on the shoulders to form a cutting end face that is aligned with the end face of the core, a The cutting circumferential face that protrudes from the outer periphery of the shoulder.

The cutting peripheral surface of the first abrasive layer is concavely provided with a gap for adjoining the second abrasive layer.

The outer periphery of the core forms a gradually expanding conical surface from the shoulder to the other end surface, and the second abrasive layer is correspondingly fixed on the conical surface to form a cutting end surface that is aligned with the other end surface of the core, and a winding surface. Cutting cone with center rotation.

After adopting the above scheme, the grinding wheel is provided with a first abrasive layer on the end face of the core, and the core is provided with a second abrasive layer on the other ring, and then the angle between the cutting end face of the first abrasive layer and the cutting circumferential surface is controlled to be Ninety degrees, to respectively provide trimming milling cutter or the bottom edge of the drill bit, as for the second abrasive layer, it has a cutting end surface and a cutting conical surface, and an acute angle less than 90 degrees is formed between the two surfaces. It can be inserted into the milling cutter or the chip flute of the drill bit to trim the clearance of the peripheral cutting edge, so that the grinding wheel of the utility model has the convenience of grinding the milling cutter or the drill bit in all directions.

In addition, the particle size of the second abrasive layer is coarser than that of the first abrasive layer, so that the conical surface and acute corner can quickly trim the bottom edge and the relief angle, and make the surface of the relief angle meet the requirements.

Description of drawings

Fig. 1 is the three-dimensional appearance schematic diagram of the utility model;

Fig. 2 is the front schematic diagram of the utility model;

Fig. 3 is a top view schematic diagram of the utility model;

Fig. 4 is a schematic diagram of looking up of the utility model;

Fig. 5 is a schematic cross-sectional view of the utility model.

Description of main component symbols

10 core 11 middle hole 12, 13 end faces

14 shoulder 15 conical surface 20 first abrasive layer 21 cutting end face

22 cutting the circumferential surface 23 notch 30 the second abrasive layer 31 cutting the end face

32 cutting conical surface 33 acute corner

Detailed ways

Please refer to Fig. 1 to Fig. 5, the utility model grinding wheel comprises:

The core 10, please refer to FIG. 5, it has a center of rotation, and the center is provided with a middle hole 11 for driving the drive shaft to rotate around the center. The core 10 has two end faces 12, 13 perpendicular to the center, An annular shoulder 14 is recessed between one end surface 12 and the outer periphery, and the outer edge of the core 10 forms a gradually expanding conical surface 15 from the shoulder 14 to the other end surface 13;

The first abrasive material layer 20, please cooperate with Fig. 1 and Fig. 5 view, is fixedly placed on the shoulder 14, and forms a cutting end face 21 that is flush with the end face 12 of the core 10, and a cutting peripheral surface protruding from the periphery of the shoulder 14 22. The angle between the cutting end surface 21 and the cutting peripheral surface 22 of the first abrasive material layer 20 is 90 degrees, which can be used for trimming the bottom edge of the milling cutter or drill according to the user's habit; and the cutting peripheral surface 22 is opposite to the A notch 23 is recessed at the position of the other end surface 13 of the core 10 for adjoining the second abrasive material layer 30 described below;

The second abrasive material layer 30, please cooperate with Fig. 1 and Fig. 5 view, is to be correspondingly fixed on the conical surface 15, and forms a cutting end face 31 that is aligned with the other end face 13 of the core 10, and one that can rotate around the center Cutting conical surface 32, between this cutting end surface 31 and cutting conical surface 32 forms an acute angle part 33 less than 90 degrees, and this acute angle part 33 can be inserted into milling cutter or drill bit flute and trims the clearance angle of circumferential cutting edge, according to The grinding wheel of the utility model has the convenience of grinding milling cutters or drill bits in all directions.

In addition, the grain size of the second abrasive layer 30 is controlled to be coarser than that of the first abrasive layer 20, so that the cutting conical surface 32 can be used for rough grinding of the bottom edge of the milling cutter or drill bit, while the cutting of the first abrasive layer 20 The peripheral surface 22 can be used for fine (finish) grinding; and the acute angle portion 33 can quickly modify the relief angle, so that the surface of the relief angle can be ground to meet the requirements.

To sum up, the overall structure of the present invention completely reforms the shortcomings of the conventional structure, so that the acute angle portion 33 of the grinding wheel of the present invention can reliably and smoothly trim the clearance angle of the milling cutter or the drill bit.

But the above is only a preferred embodiment of the utility model, and should not limit the scope of the utility model with it, that is, all equivalent changes and modifications made according to the patent scope of the utility model should still be It belongs to the scope covered by the utility model.

Claims (7)

1. abrasive wheel structure, it is characterized in that: abrasive wheel is made of fuse, first abrasive material and second abrasive material;

Its fuse has a center of rotation and both ends of the surface, and first abrasive material is arranged at this fuse one end face, and this first abrasive material is formed with a cutting end face and a cutting periphery;

Second abrasive material is located on the fuse periphery, and this second abrasive material has a cutting end face and a cutting taper seat, and forms an acute angle part less than 90 degree between the cutting end face and the cutting circle conical surface.

2. abrasive wheel structure as claimed in claim 1 is characterized in that: the cutting end face and the angle between the cutting circle side face of first abrasive material are 90 degree.

3. abrasive wheel structure as claimed in claim 1 is characterized in that: the granularity of second abrasive material is thick than first abrasive material.

4. abrasive wheel structure as claimed in claim 1 is characterized in that: the fuse center provides the useful mesopore that rotates around the center for driving shaft drives.

5. abrasive wheel structure as claimed in claim 1, it is characterized in that: fuse has the end face of two vertical centres, be concaved with a ring-type shoulder between one end and periphery, first abrasive material is to be fixedly arranged in shoulder, and is formed with the cutting circle side face of a cutting end face that trims with the fuse end face, an outstanding shoulder periphery.

6. abrasive wheel structure as claimed in claim 5 is characterized in that: the cutting circle side face of first abrasive material is concaved with in order to the breach in abutting connection with second abrasive material.

7. abrasive wheel structure as claimed in claim 5, it is characterized in that: the fuse periphery is formed the taper seat of flaring to the other end by shoulder, second abrasive material is the corresponding taper seat that is fixedly arranged in, and forms cutting end face, the cutting circle conical surface that can rotate around the center that trims with the fuse other end.

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