CN115283732B

CN115283732B - Art drill

Info

Publication number: CN115283732B
Application number: CN202211035667.6A
Authority: CN
Inventors: 程国标
Original assignee: Guangdong Kanoya Home Furnishing Co ltd
Current assignee: Guangdong Kanoya Home Furnishing Co ltd
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2023-07-04
Anticipated expiration: 2042-08-26
Also published as: CN115283732A

Abstract

The invention discloses a process drill, which aims to form a cutting edge by an additionally processed cutter body and reduce the processing difficulty, and adopts the technical scheme that: the utility model provides a technology bores, includes the drilling rod of vertical arrangement, the bottom of drilling rod is equipped with two brill bodies that become central symmetry around the drilling rod, be equipped with the cutter body along the radial extension of drilling rod on the brill body, the lower extreme of cutter body is equipped with first cutting edge, the one end that the rotation center was kept away from to the cutter body is equipped with the second cutting edge, two the first cutting edge of cutter body has the coincidence on the axis of drilling rod, first cutting edge is upwards crooked along the direction that keeps away from rotation center, belongs to furniture processing technical field.

Description

Art drill

Technical Field

The invention belongs to the technical field of furniture processing, and particularly relates to a process drill.

Background

On furniture such as door plant, plaque, window frame, etc. often need processing recess, and in order to make the recess more pleasing to the eye, the lateral wall of recess can possess certain radian, and this kind of processing that has the radian needs to use special drill bit.

To this situation, CN215848703U discloses a cutter for cutting hierarchical side slots, which comprises a blade, wherein the blade comprises a first layer of slot sharpening, a second layer of slot sharpening and side sharpening which are sequentially arranged from bottom to top, the transverse protruding lengths of the three are sequentially decreased, the edges of the three extend to form a cutting edge, and the bottom end of the cutting edge is a tip.

The cutting edge of the cutter has a special shape, so that a groove with a radian side wall can be machined;

however, the cutter is integrally machined to form the cutting edge, so that the cutter is difficult to machine and is expensive;

in practical processing, the side walls of Xu Aocao are longer in extension in the horizontal direction, and the lengths of the matched cutters in the radial direction of the cutters are longer, so that when the cutters are rotated for cutting, the cutters shake, the shake amplitude is larger at the position, which is far away from the rotation center of the cutters, the surface of the grooves is not smooth enough after cutting, and the attractiveness of furniture is affected.

Disclosure of Invention

The invention mainly aims to provide a process drill, which aims to form a cutting edge by additionally processing a cutter body and reduce processing difficulty.

According to a first aspect of the invention, there is provided a process drill comprising a drill rod arranged vertically, wherein the bottom of the drill rod is provided with two drill bodies which are symmetrical around the drill rod in a central manner, the drill bodies are provided with cutter bodies which extend along the radial direction of the drill rod, the lower ends of the cutter bodies are provided with first cutting edges, one ends of the cutter bodies, which are far away from a rotation center, are provided with second cutting edges, the first cutting edges of the two cutter bodies are overlapped on the axis of the drill rod, and the first cutting edges are bent upwards along the direction far away from the rotation center;

the side, far away from the drill body, of the cutter body is a front cutting edge surface, the bottom surface of the cutter body is a rear cutting edge surface, the first cutting edge is formed between the front cutting edge surface and the rear cutting edge surface, and the cutting edge angle of the first cutting edge gradually becomes larger along the direction far away from the rotation center;

the thickness of the cutter body gradually increases along the direction away from the rotation center.

In the technical drill, the front cutting edge face is vertical, the rear cutting edge face is inclined upwards in a direction away from the front cutting edge face, and the cutting angle of the first cutting edge is 40-75 degrees.

In the technical drill, the end face of one end, far away from the rotation center, of the cutter body is a side cutting edge face, and the second cutting edge is formed between the front cutting edge face and the side cutting edge face.

In the technical drill, the cutting angle of the second cutting edge is 40-55 degrees.

In the technical drill, the thickness of the cutter body is 2-8mm.

In the technical drill, the thickness of the drill body is gradually reduced along the direction away from the rotation center.

One of the above technical solutions of the present invention has at least one of the following advantages or beneficial effects:

in the invention, the first cutting edge and the second cutting edge are arranged on the cutter body, and the cutter body and the drill body can be separately processed and then fixed together, thereby effectively reducing the processing difficulty;

simultaneously, the angle of the first cutting edge gradually increases along the direction far away from the rotation center, and the thickness of the cutter body gradually increases along the direction far away from the rotation center, so that the cutter body can keep better rigidity, the shake of the drill bit is reduced, and the processed groove surface is smoother.

Drawings

The invention is further described below with reference to the drawings and examples;

fig. 1 is a front view of embodiment 1 of the present invention;

FIG. 2 is a top view of embodiment 1 of the present invention;

FIG. 3 is a bottom view of embodiment 1 of the present invention;

FIG. 4 is a cross-sectional view A-A of FIG. 1 of example 1 of the present invention;

fig. 5 is a sectional view of B-B of fig. 1 of embodiment 1 of the present invention.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention and are not to be construed as limiting the present invention.

The following disclosure provides many different embodiments, or examples, for implementing different aspects of the invention.

Example 1

Referring to fig. 1 to 5, in one embodiment of the present invention, a process drill includes a drill rod 1 vertically arranged, wherein two drill bodies 2 are arranged at the bottom of the drill rod 1 and are symmetrical around the drill rod 1, a cutter body 3 extending along the radial direction of the drill rod 1 is arranged on the drill body 2, a first cutting edge 31 is arranged at the lower end of the cutter body 3, a second cutting edge 32 is arranged at the end of the cutter body 3 away from the rotation center, the first cutting edges 31 of the two cutter bodies 3 are overlapped on the axis of the drill rod 1, and the first cutting edges 31 are bent upwards along the direction away from the rotation center;

the first cutting edge 31 and the second cutting edge 32 are arranged on the cutter body 3, the cutter body 3 and the drill body 2 can be separately processed, and then are fixed together in a welding mode and the like, so that the processing difficulty is effectively reduced;

when the process is used for drilling, the first cutting edge 31 and the second cutting edge 32 of the cutter body 3 are matched to machine a groove, and the shapes of the first cutting edge 31 and the second cutting edge 32 are the profiles of the side wall of the groove in the vertical direction.

Specifically, the surface of the cutter body 3 away from the drill body 2 is a front cutting edge surface 33, the bottom surface of the cutter body 3 is a rear cutting edge surface 34, a first cutting edge 31 is formed between the front cutting edge surface 33 and the rear cutting edge surface 34, and the cutting angle of the first cutting edge 31 gradually increases along the direction away from the rotation center;

the length direction of the first cutting edge 31 extends in a direction away from the rotation center, and the first cutting edge 31 rotates around the drill rod 1 during the rotation process, the linear velocity of each point on the first cutting edge 31 is different, and the larger the linear velocity is, the more the point on the first cutting edge 31 is far from the rotation center, the more the shake is serious; after the edge angle of the first cutting edge 31 is gradually increased along the direction away from the rotation center, the strength of the first cutting edge 31 can be gradually increased, the stability and rigidity of the cutter body 3 are improved, and the shake of the cutter body 3 is reduced; especially, the characteristic that the more the cutter body 3 is far from the rotation center, the more serious the shake is, so that the surface finish degree of the groove processed is more uniform.

In this embodiment, the front facet 33 is a vertical surface and the rear facet 34 is inclined upwardly in a direction away from the front facet 33, the angle of the first cutting edge 31 being 40-75 degrees; preferably, the edge angle of the first cutting edge 31 is 45-70 °;

that is, the cutting angle of the first cutting edge 31 is gradually increased from 45 ° to 70 °, within which the normal cutting of the first cutting edge 31 is not affected, and the chatter of the cutter body 3 can be suppressed.

In this embodiment, the end surface of the end of the cutter body 3 away from the rotation center is a side edge surface 35, and a second cutting edge 32 is formed between the front edge surface 33 and the side edge surface 35; the second cutting edge 32 extends generally vertically and the second cutting edge 32 is remote from the center of rotation and the angle of the edge must not be too small;

typically, the second cutting edge 32 has an edge angle of 55-75; as a specific implementation of this embodiment, the edge angle of the second cutting edge 32 is 70 °.

The two drill bodies 2 are arranged diagonally, the surface of the cutter body 3 opposite to the front cutting edge surface 33 is fixed on the surface of the drill body 2 close to the drill rod 1, the vacant positions between the two drill bodies 2 form chip removal spaces, and the wood chips cut by the first cutting edge 31 can be positioned in the chip removal spaces; and one surface of the drill body 2 close to the side edge surface 35 of the cutter body 3 on the other drill body 2 is an arc-shaped surface which is upwards bent for guiding, so that chip removal is facilitated.

In order to further improve the strength of the cutter body 3, the thickness of the cutter body 3 is gradually increased along the direction away from the rotation center; the strength of the first cutting edge 31 can be gradually enhanced along the direction far away from the rotation center, and the shake of the cutter body 3 during cutting can be restrained by matching with the gradually increased edge angle of the first cutting edge 31, so that the shake amplitude of one end of the cutter body 3 far away from the rotation center is reduced; at the same time, the second cutting edge 32 is also more stable in cutting, and the cutting effect is good.

In the embodiment, the thickness of the cutter body 3 is 2-8mm; preferably, the thickness of the cutter body 3 is 3-7mm;

that is, the thickness of the cutter body 3 is gradually increased from 3mm to 7mm, and the weight of the cutter body 3 is not excessively increased, so that the rotation of the technical drill is not affected.

In the embodiment, the projection length of the cutter body 3 on the horizontal plane is 80mm; referring to fig. 1 and 4, the angle α of the first cutting edge 31 at the A-A position is 57 °, and the thickness of the cutter body 3 at this position is 5mm; referring to fig. 1 and 5, the angle β of the first cutting edge 31 at the B-B position is 67 ° and the thickness of the cutter body 3 at this position is 6.5mm; it can be seen that β is greater than α and that the thickness of the blade body 3 is also increasing.

Meanwhile, the thickness of the drill body 2 gradually reduces along the direction away from the rotation center, so that the weight change of the drill body 2 and the cutter body 3 is not too large, the integral moment of inertia is not changed greatly, the drill rod 1 does not need to be thickened, and the drill rod is applicable to the previous clamp.

Comparative example 1

Substantially the same as in example 1, except that: the edge angle of the first cutting edge 31 does not gradually increase in a direction away from the rotation center, but remains uniform;

specifically, the cutting angle of the first cutting edge 31 is 45 degrees; in this way, the first cutting edge 31 has a relatively good cutting ability during cutting, but the strength of the first cutting edge 31 is insufficient, vibration still occurs in a portion of the first cutting edge 31 farther from the rotation center, vibration occurs in the cutter body 3, and the vibration amplitude increases in a position of the cutter body 3 farther from the rotation center; although the thickness of the cutter body 3 gradually increases in a direction away from the rotation, only the strength of the cutter body 3 is increased, the strength of the first cutting edge 31 cannot be increased, and the shake of the cutter body 3 can be reduced only slightly; the surface finish of the processed groove is not uniform enough, particularly the side wall area of the groove is rough, the appearance is very affected, and the subsequent film or the adhesive film is not facilitated.

After comparative experiments of comparative example 1 and example 1, it was found that example 1 can make the surface finish of the grooves more uniform, and the peripheral regions of the grooves are not rougher than the central regions of the grooves.

Comparative example 2

Substantially the same as in example 1, except that: the thickness of the cutter body 3 does not gradually increase in a direction away from the rotation center, but remains uniform;

specifically, the thickness of the cutter body 3 is 4mm; since the longer the first cutting edge 31 is from the center of rotation, the greater the impact the longer the cutter body 3 is from the center of rotation, and the thickness of the cutter body 3 is uniform, the strength is insufficient at the position where the greater impact is received, and the cutter body 3 is vibrated, and the greater the vibration amplitude of the cutter body 3 is from the position where the longer the cutter body is from the center of rotation; meanwhile, the stability of the second cutting edge 32 during cutting is reduced, and the cutting effect of the second cutting edge 32 is affected;

the edge angle of the first cutting edge 31 is gradually increased along the direction away from the rotation center, the strength of the first cutting edge 31 is increased, and the shake of the cutter body 3 can be reduced only slightly; in this case, the surface finish of the groove machined is not uniform enough, especially the sidewall area of the groove is rough, which greatly affects the appearance and is unfavorable for subsequent film or adhesive.

After comparative experiments of comparative example 2 and example 1, it was found that example 1 can make the surface finish of the grooves more uniform, and the peripheral regions of the grooves are not rougher than the central regions of the grooves.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The technical drill comprises a drill rod which is vertically arranged, wherein two drill bodies which are symmetrical in center around the drill rod are arranged at the bottom of the drill rod, and the technical drill is characterized in that a cutter body which extends along the radial direction of the drill rod is arranged on the drill body, a first cutting edge is arranged at the lower end of the cutter body, a second cutting edge is arranged at one end of the cutter body far away from the rotation center, the first cutting edges of the two cutter bodies are overlapped on the axis of the drill rod, and the first cutting edge is bent upwards along the direction far away from the rotation center;

2. The process drill of claim 1, wherein the front facet is a vertical face and the rear facet is inclined upwardly in a direction away from the front facet, the first cutting edge having an edge angle of 40-75 °.

3. The process drill of claim 1, wherein the end of the cutter body distal from the center of rotation has a side edge face, the front edge face and the side edge face defining the second cutting edge therebetween.

4. A process drill according to claim 3, wherein the cutting angle of the second cutting edge is 40-55 °.

5. The process drill of claim 1, wherein the cutter body has a thickness of 2-8mm.

6. The process drill of claim 1, wherein the thickness of the drill body tapers in a direction away from the center of rotation.