CN210233373U

CN210233373U - Self-feeding high-strength flat wing drill

Info

Publication number: CN210233373U
Application number: CN201920766103.7U
Authority: CN
Inventors: Hua Zhang; 张华�; Aimin Song; 宋爱民; Guangxue Jin; 金广学
Original assignee: Zhejiang Urus Tools Co ltd
Current assignee: Zhejiang Urus Tools Co ltd
Priority date: 2019-05-24
Filing date: 2019-05-24
Publication date: 2020-04-03
Anticipated expiration: 2029-05-24

Abstract

The utility model provides a from the high strength flat wing that feeds and bore, from the high strength flat wing that feeds and bore including a drillstock, and one is located drill bit on a drillstock terminal surface. The drill bit comprises a disk body, a radial cutting part arranged along the radial direction of the disk body, a chip removal port arranged on the disk body, a plurality of annular cutting parts arranged at the circumferential edge of the disk body at intervals, and a self-feeding spiral drill core arranged along the central shaft of the disk body. The central axis of the disk body coincides with the central axis of the drill shank. The radial cutting portion extends from the center of the disc body to the periphery. Each of the annular cutting portions includes a cutter for cutting an annular groove. The utility model has the advantages that: the processing efficiency can be improved.

Description

Self-feeding high-strength flat wing drill

Technical Field

The utility model belongs to the technical field of wood working instrument, especially from the high strength flat wing that feeds and bore.

Background

Self-feeding high strength flat wing drills are commonly used for the machining of high precision holes as well as flat bottom holes.

For example, the chinese patent discloses a keyway straight edge type carpentry drill, application No. 97218095.8, which is composed of a drill rod, a drill edge and a drill groove, wherein the drill groove is a single-side straight edge type keyway. The drill edges and the groove edges are symmetrically arranged in a clockwise or anticlockwise direction. The scheme has the characteristics that the shape and the structure of the chip removal port are changed, and the spiral groove is changed into the straight-edge type key groove, so that the chip removal and transverse milling functions are realized. The drill bit is characterized in that the drill bits can be arranged in a forward direction and a counterclockwise direction, and are respectively suitable for forward and backward steering, and the arrangement and the use on the wood-working machine are convenient.

Although the woodworking drill has the advantages, the technical problem of low processing efficiency exists in the scheme.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a self-feeding high strength flat wing drill with high machining efficiency to solve the above problems.

Self-feeding high-strength flat wing drill, which comprises a drill handle and a drill bit connected with the drill handle, and is characterized in that: the drill bit comprises a disk body, a radial cutting part and a self-feeding spiral drill core, wherein the radial cutting part is arranged on the disk body in the radial direction, the chip removal port is arranged on the disk body, a plurality of intervals are arranged on the annular cutting part at the peripheral edge of the disk body, the self-feeding spiral drill core is arranged on the central shaft of the disk body, the central shaft of the disk body coincides with the central shaft of the drill handle, the radial cutting part extends from the center of the disk body to the periphery, each annular cutting part comprises a cutter used for cutting out an annular groove, and the radial cutting part comprises a cutting edge facing the chip removal port.

Furthermore, the cutter comprises a cutting surface and a chip discharging surface, the cutting surface is a plane which forms an acute angle with the central axis of the disc body, the chip discharging surface is a curved surface, and the contour line of the chip discharging surface on the section along the central axis of the disc body is parallel to the central axis of the disc body.

Further, the plane of the cutting edge passes through the central axis of the disc body and is perpendicular to the radial direction of the disc body.

Further, the disk body further comprises a reinforcing rib, and the reinforcing rib is arranged between the radial cutting part and the annular cutting part.

Further, the radial cutting part further comprises a third inclined surface, the annular cutting part further comprises a first inclined surface and a second inclined surface, and the inclined angles between the first inclined surface, the second inclined surface and the third inclined surface are equal to the inclined angles between the end surfaces of the disc body.

Further, the drill bit includes three of the annular cutting portions.

Further, the drill core is conical and comprises a spiral groove, and the groove width of the spiral groove is larger than one half of the thread pitch of the spiral.

Further, the disk body still includes a supporting seat, the supporting seat set up in bore core lower extreme face, the supporting seat is cylindrical.

Compared with the prior art, the utility model provides a follow from high strength flat wing that feeds bores radial cutting portion, a plurality of intervals of the radial setting of disk body are located the annular cutting portion of disk body circumference edge, one is followed the center pin of disk body sets up from feeding the auger bit core, and one sets up under the combined action of the chip removal mouth on the disk body, higher machining efficiency has.

Drawings

Fig. 1 is the structural schematic diagram of the self-feeding high-strength flat wing drill provided by the present invention.

Fig. 2 is a schematic view of another angle configuration of the self-feeding high strength flat wing drill of fig. 1.

Detailed Description

Specific examples of the present invention will be described in further detail below. It should be understood that the description herein of embodiments of the invention is not intended to limit the scope of the invention.

As shown in fig. 1 to fig. 2, it is a schematic structural diagram of the self-feeding high-strength flat wing drill provided by the present invention. The self-feeding high strength flat wing drill includes a drill shank 10, and a drill bit 20 connected to the drill shank 10. It is contemplated that the self-feeding high strength flat wing drill may further include other functional structures, such as a clamping structure provided at the other end of the drill shank 10 with respect to the drill bit 20, which is well known to those skilled in the art and will not be described herein.

The drill handle 10 and the drill bit 20 are integrally arranged, and a polyhedral clamping part and a positioning groove are arranged on the drill handle 10 for convenient installation and fixation.

The drill 20 includes a disc 21, a radial cutting portion 22 provided in a radial direction of the disc 21, a plurality of annular cutting portions 23 provided at intervals at circumferential edges of the disc 21, a self-feeding auger core 24 provided along a central axis of the disc, and a chip removal port 25 provided in the disc 21.

The tray body 21 includes a support base 211 and a reinforcing rib 212. Since the height of the core 24 is greater than the heights of the annular cutting portion 23 and the radial cutting portion 22, in order to prevent the core 24 from being too long and easily broken, a support seat 211 is provided on the lower end surface of the core 24. The support seat 211 is cylindrical. In order to improve the stability of the radial cutting portion 22 and prevent the radial cutting portion 22 from breaking due to excessive cutting force, a rib 212 is disposed between the radial cutting portion 22 and the annular cutting portion 23.

The radial cutting portion 22 includes a cutting edge 221 and a third inclined surface 222. In order to facilitate high-speed and high-efficiency cutting of wood to be processed, the plane on which the cutting edge 221 is located passes through the central axis of the disc body 21 and is perpendicular to the radial direction of the disc body 21. In order to facilitate the cutting of the wood to be worked, the third inclined surface 222 is directed towards the drill shank 10.

The circular cutting portion 23 includes a cutter 231, a first inclined surface 232, and a second inclined surface 233. In order to improve the cutting efficiency, the first inclined surface 232, the second inclined surface 233, and the third inclined surface 222 are inclined at the same angle with the end surface of the disc body 21. The cutter 231 includes a cutting face 2312 and a chip surface 2311. In order to cut a flat cylindrical surface, the cutting surface 2312 is provided as a plane having an acute angle with the central axis of the disk body 21. In order to smoothly discharge the sawdust out of the disc body 21 during the circular cutting process, the sawdust surface 2311 is curved, and the contour line of the sawdust surface 2311 is parallel to the central axis of the disc body 21 on the cross section along the central axis of the disc body 21. Preferably, in the present embodiment, the chip surface 2311 is a concave surface, and the annular cutting portion 23 includes 3 pieces.

The drill core 24 comprises a spiral groove 241, in order to enable the drill core 24 to smoothly discharge wood chips in the process of drilling and positioning, the end face of the spiral groove 241 is provided with an arc-shaped face, and the groove width of the spiral groove 241 is larger than one half of the screw pitch of the spiral.

The exhaust port 25 is formed by the radial cutting portion 22, the annular cutting portion 23 and the disc 21 together. In order to discharge the chips more efficiently, prevent the resistance during the cutting process from being increased due to the accumulation of chips and the generation of burrs for cutting, the chip discharge port 25 is provided as a multi-sided opening.

Compared with the prior art, the utility model provides a follow from high strength flat wing that feeds bores radial cutting portion 22, a plurality of intervals are located the annular cutting portion 23 of 21 circumference edges of disk body, one is followed the center pin of disk body sets up from feeding auger core 24, and one sets up under the combined action of chip removal mouth 25 on the disk body 21, higher cutting process efficiency has.

The above description is only for the preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention, and any modification, equivalent replacement or improvement within the spirit of the present invention is encompassed by the claims of the present invention.

Claims

1. Self-feeding high-strength flat wing drill, which comprises a drill handle and a drill bit connected with the drill handle, and is characterized in that: the drill bit comprises a disk body, a radial cutting part and a self-feeding spiral drill core, wherein the radial cutting part is arranged on the disk body in the radial direction, the chip removal port is arranged on the disk body, a plurality of intervals are arranged on the annular cutting part at the peripheral edge of the disk body, the self-feeding spiral drill core is arranged on the central shaft of the disk body, the central shaft of the disk body coincides with the central shaft of the drill handle, the radial cutting part extends from the center of the disk body to the periphery, each annular cutting part comprises a cutter used for cutting out an annular groove, and the radial cutting part comprises a cutting edge facing the chip removal port.

2. The self-feeding, high strength flat wing drill of claim 1, wherein: the cutter comprises a cutting surface and a chip discharging surface, the cutting surface is a plane which forms an acute angle with the central axis of the disk body, the chip discharging surface is a curved surface, and the contour line of the chip discharging surface is parallel to the central axis of the disk body on the section along the central axis of the disk body.

3. The self-feeding, high strength flat wing drill of claim 1, wherein: the plane of the cutting edge passes through the central axis of the disk body and is perpendicular to the radial direction of the disk body.

4. The self-feeding, high strength flat wing drill of claim 1, wherein: the disk body further comprises a reinforcing rib, and the reinforcing rib is arranged between the radial cutting part and the annular cutting part.

5. The self-feeding, high strength flat wing drill of claim 1, wherein: the radial cutting part further comprises a third inclined surface, the annular cutting part further comprises a first inclined surface and a second inclined surface, and the inclined angles between the first inclined surface, the second inclined surface and the third inclined surface and the end surfaces of the disc body are equal.

6. The self-feeding, high strength flat wing drill of claim 1, wherein: the drill bit comprises three annular cutting portions.

7. The self-feeding, high strength flat wing drill of claim 1, wherein: the drill core is conical and comprises a spiral groove, and the groove width of the spiral groove is larger than one half of the thread pitch of the spiral.

8. The self-feeding, high strength flat wing drill of claim 7, wherein: the disk body still includes a supporting seat, the supporting seat set up in bore core lower extreme face, the supporting seat is cylindrical.