CN210412712U

CN210412712U - Drilling deburring cutter suitable for through-hole

Info

Publication number: CN210412712U
Application number: CN201921020368.9U
Authority: CN
Inventors: 朱春良; 林海
Original assignee: Hangzhou Kejie Model Co Ltd
Current assignee: Hangzhou Kejie Model Co Ltd
Priority date: 2019-07-02
Filing date: 2019-07-02
Publication date: 2020-04-28
Anticipated expiration: 2029-07-02

Abstract

The utility model belongs to the technical field of machining, and discloses a drilling deburring cutter suitable for through holes, which comprises a drill handle and a drill body, wherein a plurality of grooves are uniformly arranged on the drill handle along the circumference, and a spring blade is arranged in each groove; the groove comprises a radial groove and an axial groove, the radial groove is communicated with the axial groove, and the upper end and the lower end of the radial groove are respectively provided with a flange extending inwards; the spring blade is in an omega shape and comprises an arc-shaped cutter head, a blade arranged on the cutter head and two deformation parts respectively connected with the upper end and the lower end of the cutter head; the deformation part is arranged in the axial groove, the cutter head is limited in the radial groove by the retaining edge, and the cutting edge protrudes out of the surface of the drill handle in an unstressed state. The design of the spring blade capable of deforming realizes the functions of drilling and deburring of the through hole by the cutter. During machining and manufacturing, the through hole can be drilled and deburred only by one-time operation, and secondary machining is not needed.

Description

Drilling deburring cutter suitable for through-hole

Technical Field

The utility model belongs to the technical field of machining, especially, relate to a drilling burring cutter suitable for through-hole.

Background

Burrs are inevitable in the manufacturing process, but the generation of the burrs causes problems, such as: burrs in the bore holes may cause fastener and material problems; burrs at the edge of the hole may cause stress concentrations, thereby reducing the fracture resistance of the material; increasing friction between moving parts; proper placement of the interference fastener; the sharp edges of the burrs tend to concentrate the charge and may cause problems such as spontaneous electron discharge.

Most of machining holes required by workpieces at the present stage are drilled, burrs are often easily left on the inner wall and the upper and lower edges of the machining holes, and secondary machining needs to be performed on the inner wall and the edges of the holes. The existing burrs are mostly processed secondarily by tools such as a grinding machine, a file or a burr, two procedures are needed, time and labor are consumed, and meanwhile, the production cost is increased.

Disclosure of Invention

The utility model discloses to the not enough of existence among the above-mentioned prior art, provide one kind can once only accomplish drilling and through-hole lower limb and the burring of inner wall drilling burring cutter that is applicable to the through-hole.

The utility model discloses realize that the technical scheme that its technical purpose adopted is:

a drilling and deburring cutter suitable for through holes comprises a drill handle and a drill body, wherein a plurality of grooves are uniformly formed in the drill handle along the circumference, and a spring blade is arranged in each groove; the groove comprises a radial groove and an axial groove, the radial groove is communicated with the axial groove, and the upper end and the lower end of the radial groove are respectively provided with a flange extending inwards; the spring blade is in an omega shape and comprises an arc-shaped cutter head, a blade arranged on the cutter head and two deformation parts respectively connected with the upper end and the lower end of the cutter head; the deformation part is arranged in the axial groove, the cutter head is limited in the radial groove by the retaining edge, and the cutting edge protrudes out of the surface of the drill handle in an unstressed state.

The utility model discloses a spring blade can take place deformation to downthehole time down at the cutting edge, specifically, the cutting edge touches with downthehole wall and receives inward pressure, and the tool bit inwards moves, and two upper and lower deformation portion atresss extend to upper and lower both sides respectively, offsets until cutting edge and downthehole wall. The omega-shaped spring blade prevents the situation that the cutter is accumulated with chips in the operation process

Preferably, the upper end and the lower end of the blade are arc-shaped. Facilitating the entry of the spring blade into the hole.

Preferably, the number of the grooves is 3, and the number of the spring blades is 3. The deburring quality is improved.

Preferably, the spring blade is made of a cemented carbide material.

Preferably, the spring blade is removably disposed within the drill shank. The spring blade is convenient to replace, and the service life of the cutter is prolonged.

Preferably, the length of the axial groove is greater than the length of the pogo pin. When the deformation part of the spring blade deforms, the axial direction is lengthened, and enough extension space is provided for the deformation part.

The utility model has the advantages that: the utility model discloses a drilling burring cutter simple structure, compactness. The design of the spring blade capable of deforming realizes the functions of drilling and deburring of the through hole by the cutter. During machining and manufacturing, drilling and deburring of the through hole can be completed only by one-time operation, secondary machining is not needed, the efficiency is high, the application range is wide, and the drilling machine is suitable for various hand drills, bench drills and machine tools.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a plan view of the present invention.

Fig. 3 is a cross-sectional view B-B of fig. 2.

Fig. 4 is an enlarged view of a portion a of fig. 3.

Description of the labeling:

11. a drill shank; 12. A drill body; 13. a groove; 131. a radial groove; 132. an axial groove; 133. blocking edges; 2. a spring blade; 21. a blade; 22. a cutter head; and 23, deformation parts.

Detailed Description

The technical solution of the present invention will be further described in detail by the following specific embodiments with reference to the accompanying drawings.

As shown in fig. 1-4, the deburring tool for drilling holes comprises a drill shank 11 and a drill body 12, wherein 3 grooves 13 are uniformly formed in the drill shank 11 along the circumference, and a spring blade 2 is arranged in each groove 13. The spring blade 2 may be made of a cemented carbide material.

As shown in fig. 4, the groove 13 includes a radial groove 131 and an axial groove 132, the radial groove 131 is communicated with the axial groove 132, and flanges 133 extend inward from upper and lower ends of the radial groove 131 respectively. The spring blade 2 is in an omega shape and comprises an arc-shaped cutter head 22, a blade 21 arranged on the cutter head 22 and two deformation parts 23 respectively connected with the upper end and the lower end of the cutter head 22. The length of the axial groove 132 is greater than the length of the spring blade 2. The deformation 23 is arranged in an axial groove 132 and the cutting head 22 is confined in a radial groove 131 by a rib 133, the cutting edge 21 protruding in the unstressed state over the surface of the drill shank 11. The upper end and the lower end of the blade 21 are arc-shaped.

When the deburring machine works, a cutter enters a workpiece machining hole, the drill body 12 descends to punch a hole in the workpiece, the spring blade 2 descends until the blade 21 is close to the surface of the workpiece, and the blade 21 deburs the upper surface of the workpiece under the action of the rotating force of the cutter; along with the further descending of the cutter, the cutting edge 21 is contacted with the inner wall of the hole and is pressed inwards, the cutter head 22 moves inwards, and the upper deformation part 23 and the lower deformation part 23 are respectively stressed to extend towards the upper side and the lower side until the cutting edge 21 is pressed against the inner wall of the hole; the cutter continuously moves downwards, and the inner wall of the hole is deburred under the action of the rotating force of the cutter until the cutting edge 21 penetrates through the hole and is ejected from the back of the hole; and then the cutter is pulled reversely to move upwards, and when the blade 21 is close to the surface of the workpiece, the cutter deburres the lower surface of the workpiece under the action of the rotating force.

The utility model discloses spring blade 2 can also can dismantle the setting in drillstock 11, for example can correspond one of them deformation portion 23 position of spring blade 2 and establish one and can dismantle the separation blade in order to replace drillstock 11 to the restriction of deformation portion 23 at drillstock 11, when spring blade 2 need be changed, only need will take off when the separation blade and can change.

The above embodiments are merely preferred embodiments of the present invention, and in addition, other implementation manners of the present invention are also possible. It should be understood that any obvious modifications and adaptations thereof may be made without departing from the spirit of the present invention and are intended to be within the scope of the present invention.

Claims

1. A drilling and deburring cutter suitable for through holes comprises a drill handle (11) and a drill body (12), and is characterized in that a plurality of grooves (13) are uniformly formed in the drill handle (11) along the circumference, and a spring blade (2) is arranged in each groove (13); the groove (13) comprises a radial groove (131) and an axial groove (132), the radial groove (131) is communicated with the axial groove (132), and flanges (133) extend inwards from the upper end and the lower end of the radial groove (131) respectively; the spring blade (2) is in an omega shape and comprises an arc-shaped cutter head (22), a blade (21) arranged on the cutter head (22) and two deformation parts (23) which are respectively connected with the upper end and the lower end of the cutter head (22); the deformation part (23) is arranged in an axial groove (132), the cutter head (22) is limited in a radial groove (131) by a rib (133), and the cutting edge (21) protrudes out of the surface of the drill shank (11) in an unstressed state.

2. The drill deburring tool of claim 1 wherein said cutting edge (21) is arcuate at both upper and lower ends.

3. The drill deburring tool of claim 1 wherein said flutes (13) are 3 and said sprung blades (2) are 3.

4. Drill deburring tool according to claim 1 characterized in that said spring blade (2) is made of cemented carbide material.

5. Drill deburring tool according to claim 1 characterized in that said spring blade (2) is removably arranged in a drill shank (11).

6. The drill deburring tool of claim 1 wherein the length of said axial recess (132) is greater than the length of the sprung blade (2).