CN221271634U - Polygonal tool bit ceramic drill - Google Patents

Abstract

The utility model relates to a polygonal tool bit ceramic drill which comprises a drill handle, a drill body and a drill tip, wherein the drill tip is arranged at the front end of the drill body, the drill tip is in a flat structure, the shaft of the drill tip is overlapped with the shaft of the drill handle, the axial cross section of the drill tip is in a polygonal shape, the polygonal shape is symmetrically arranged along the axial direction, the front end of the polygonal shape is provided with a tip edge part, the left side and the right side of the polygonal shape are sequentially and symmetrically provided with a first side edge part and a second side edge part along the axial direction, the first side edge part is close to one end of the tip edge part, and the tip edge part, the first side edge part and the second side edge part are all in an obtuse angle structure; the drill point left and right sides are the slope plane setting, and the inclination and the angle of the slope plane of drill point both sides are the same, through having increased sharp edge portion angle, reduce the angle of first side edge portion, make side edge portion blade sharper to be closer with sharp edge portion, can share the cutting effort in the sharp edge portion cutting process, avoid the problem that the tool bit is damaged easily, be applicable to stereoplasm ceramic tile or concrete drilling operation and deep hole processing operation.

Description

Polygonal tool bit ceramic drill

Technical Field

The utility model belongs to the technical field of drill bits, and particularly relates to a polygonal tool bit ceramic drill applied to deep hole machining.

Background

At present, a special drill bit is required to be used for drilling on the ceramic tile, the front end of the special drill bit is provided with a cutter head in a flat shape, the cutter head is provided with sharp corners, and two sides of the cutter head are provided with arc transition. For example, chinese patent literature: CN201020223418.6 discloses a polygonal ceramic drill, comprising a drill shank and a drill tip, wherein the drill tip is arranged at the head end of the drill shank, the drill tip is flat, and the shaft of the drill tip is coincident with the shaft of the drill shank; the axial cross section of the drill point is polygonal, the polygonal shape is axisymmetric, the symmetry axis is parallel to the axis of the drill handle, and the top end of the polygonal shape is a sharp angle; the symmetry axes of the upper bottom surface and the lower bottom surface of the flat drill point deviate from the axis of the drill point along the plane of the two bottom surfaces, and the deviation sizes are the same and the directions are opposite. In the application, the tip angle of the cutter head is smaller, the cutting edge angles on two sides of the cutter head are more gentle, and the cutter head with the structure is convenient to open holes rapidly. For hard ceramic tiles or concrete, the deep hole drilling effect is limited, and the tip of the cutter head is easy to damage.

Disclosure of utility model

Aiming at the problems, the utility model discloses a polygonal cutter head ceramic drill, which has sharper cutting edges at two sides of a cutter head and improves the deep hole drilling effect.

The specific technical scheme is as follows:

The utility model provides a polygon tool bit pottery bores, includes drill shank, bore body and drill point, be equipped with the chip groove that is the heliciform and distribute on the drill body, both ends set up drill point and drill shank respectively around the drill body, the drill point is flat structure, the axle of drill point and the axle coincidence of drill shank, the axial transversal of drill point is the polygon, this polygon sets up along axial symmetry, this polygonal front end is equipped with sharp cutting edge, this polygon left and right sides is equipped with first side cutting edge and second side cutting edge along axial symmetry in proper order, wherein first side cutting edge is located the one end that is close to sharp cutting edge, first side cutting edge and second side cutting edge are obtuse angle structure; the left side and the right side of the drill point are inclined planes, and the inclined directions and the angles of the inclined planes at the two sides of the drill point are the same.

Further, the number of the chip grooves is two and the chip grooves are symmetrically distributed.

Further, reinforcing ribs which are spirally distributed are arranged in the middle of the chip removal groove in a protruding mode.

Further, the rear end of the drill handle is provided with a clamping part, and the section of the clamping part is in a triangular structure.

Further, the angle of the sharp edge is 120 degrees plus or minus 5 degrees, the angle of the first side edge is 134 degrees plus or minus 10 degrees, and the angle of the second side edge is 166 degrees plus or minus 5 degrees.

Furthermore, the front ends of the two sides of the drill point part are obliquely arranged towards the two sides, and the rear ends of the two sides of the drill point part are axially arranged.

The beneficial effects of the utility model are as follows:

Compared with the prior art, the angle of the sharp edge part is increased, the problem that the cutter head is easy to damage when drilling hard materials is avoided, meanwhile, the angles of the side edge parts on two sides of the sharp edge part are smaller, the cutting edge is sharper, the cutting edge part is closer to the sharp edge part, and the cutting acting force in the cutting process of the sharp edge part can be shared, so that the cutter is suitable for drilling hard ceramic tiles or concrete, and is suitable for deep hole machining.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a front view of the present utility model.

Fig. 3 is a schematic view of the structure of the drill tip according to the present utility model.

Fig. 4 is a schematic plan view of the drill tip of the present utility model.

The drill shank 1, the clamping part 11, the drill body 2, the junk slots 21, the reinforcing ribs 22, the drill tip 3, the tip edge part 31, the first side edge part 32 and the second side edge part 33.

Detailed Description

In order to make the technical scheme of the utility model clearer and more definite, the utility model is further described below with reference to the accompanying drawings, and any scheme obtained by carrying out equivalent substitution and conventional reasoning on the technical characteristics of the technical scheme of the utility model falls into the protection scope of the utility model. The fixed connection mentioned in the utility model is a common connection mode in the mechanical field, and the fixed connection can be realized by welding, bolt-nut connection and screw connection.

In the description of the utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the utility model.

Referring to fig. 1-4, the present embodiment provides a ceramic drill with polygonal bit, which includes a drill shank 1, a drill body 2 and a drill tip 3, wherein the drill body 2 is provided with two spiral chip grooves 21, the number of the chip grooves 21 is two and symmetrically distributed, and reinforcing ribs 22 are convexly arranged in the middle of the chip grooves 21. The front end and the rear end of the drill body 2 are respectively provided with a drill point 3 and a drill handle 1, the rear end of the drill handle 1 is provided with a clamping part 11, and the section of the clamping part 11 is in a triangular structure. The front end of the drill body 2 is provided with a groove and is used for embedding the drill tip 3, and the drill tip 3 is integrally formed by high-temperature heating, the drill tip 3 is made of hard alloy, the drill tip 3 is in a flat structure, the shaft of the drill tip 3 is overlapped with the shaft of the drill handle 1, the axial cross section of the drill tip 3 is in a polygon, the polygon is symmetrically arranged along the axial direction, the front ends of two sides of the polygon are obliquely arranged towards two sides, the rear ends of two sides of the polygon are respectively arranged along the axial direction, the front end of the polygon is provided with a tip edge part 31, the left side and the right side of the polygon are symmetrically provided with a first side edge part 32 and a second side edge part 33 along the axial direction in sequence, wherein the first side edge part 32 is positioned at one end close to the tip edge part 31, and the tip edge part 31, the first side edge part 32 and the second side edge part 33 are all in an obtuse structure; the left side and the right side of the drill point 3 are inclined planes, and the inclined directions and the angles of the inclined planes at the two sides of the drill point 3 are the same, so that the longitudinal section of the drill point 3 is in a parallelogram structure.

In the present embodiment, the angle of the sharp edge 31 is 120 degrees ±5 degrees, the angle of the first side edge 32 is 134 degrees ±10 degrees, and the angle of the second side edge 33 is 166 degrees ±5 degrees. Through increasing sharp edge portion 31 angle, reduce the angle of first side edge portion 32, make the blade of side edge portion sharper to be more close with sharp edge portion 31, can share the cutting effort in the sharp edge portion 31 cutting process, when avoiding boring hard material, the problem that the tool bit is damaged easily, thereby be applicable to stereoplasm ceramic tile or concrete drilling operation and deep hole processing operation.

The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims (6)

1. The utility model provides a polygon tool bit pottery bores, includes drill shank (1), bore body (2) and drill point (3), be equipped with on the bore body (2) and be spiral chip groove (21) that distribute, both ends set up drill point (3) and drill shank (1) respectively around bore body (2), drill point (3) are platykurtic structure, the axis coincidence of drill point (3) and drill shank (1), the axial transversal polygon of drill point (3) is personally submitted, this polygon sets up along axial symmetry, characterized in that, the front end of this polygon is equipped with sharp edge (31), this polygon left and right sides is equipped with first side edge (32) and second side edge (33) along axial symmetry in proper order, wherein first side edge (32) are located the one end that is close to sharp edge (31), first side edge (32) and second side edge (33) are obtuse angle structure all; the left side and the right side of the drill point (3) are inclined planes, and the inclined directions and the angles of the inclined planes at the two sides of the drill point (3) are the same.

2. A polygonal-head ceramic drill according to claim 1, characterized in that the number of flutes (21) is two and symmetrically distributed.

3. A polygonal bit ceramic drill according to claim 2, characterized in that ribs (22) are provided in the middle of the flutes (21) in a convex manner.

4. A ceramic drill with polygonal bit according to claim 1, characterized in that the rear end of the drill shank (1) is provided with a clamping part (11), the cross section of the clamping part (11) is triangular.

5. A polygonal-head ceramic drill according to claim 1, characterized in that the sharp edge (31) is angled at 120 degrees ± 5 degrees, the first side edge (32) is angled at 134 degrees ± 10 degrees, and the second side edge (33) is angled at 166 degrees ± 5 degrees.

6. A ceramic drill with polygonal cutting head according to claim 1, characterized in that the front ends of both sides of the drill tip (3) are inclined to both sides, and the rear ends of both sides of the drill tip (3) are arranged along the axial direction.