CN203045014U

CN203045014U - Hard alloy milling cutter for countersink machining

Info

Publication number: CN203045014U
Application number: CN 201320046055
Authority: CN
Inventors: 袁衡; 李钦
Original assignee: OSG Shanghai Precision Tools Co Ltd
Current assignee: OSG Shanghai Precision Tools Co Ltd
Priority date: 2013-01-29
Filing date: 2013-01-29
Publication date: 2013-07-10
Anticipated expiration: 2023-01-29

Abstract

The utility model relates to the technical field of countersink machining tools, particularly relates to a milling cutter for countersink machining for a base, and more particularly relates to a hard alloy milling cutter for countersink machining. The hard alloy milling cutter for countersink machining comprises a cutting edge composed of two spiral edges and two chip removal grooves, and a cutter holder connected with the cutting edge. The hard alloy milling cutter for countersink machining is characterized in that the cutter holder is of a T-shaped structure, and an oil feeding groove hole used for stably feeding oil to the milling cutter is formed in the top of the cutter holder; and the bottom edge area of each spiral edge of the cutting edge is slightly greater than the area of the bottom plane of each chip removal groove, the arc-shaped groove openings of the chip removal grooves are formed in the junction of the bottom edges of the two spiral edges, and the arc radius R of each arc-shaped groove opening is 5-6mm. The hard alloy milling cutter for countersink machining disclosed by the utility model has the advantages that the machining speed is fast, the efficiency is high, a left torque and a right torque are reduced by 45% compared with those of the existing milling cutter, the service life is long, chip removal is smooth, the flatness of the bottom surfaces of the machined components is good, planar countersinks and inclined-plane countersinks can be machined simultaneously, the machining range is wide, the accuracy is high, the expansion quantity of a machining aperture is low, and the stability is strong.

Description

Counterbore processing carbide-tipped milling cutter

Technical field

The utility model relates to counterbore process tool technical field, especially a kind of base counterbore milling cutter processing, specifically a kind of counterbore processing carbide-tipped milling cutter.

Background technology

Run into such processing through regular meeting in the component processing: because will use bolt, so need to the base counterbore.Often speed is slower for the processing of counterbore for existing cutter, and efficient is not high, and left and right sides moment of torsion is many, causes shorten greatly the service life of cutter; Often run into simultaneously chip removal inadequately the flatness of the parts bottom surface after unobstructed, the processing do not reach problems such as requirement, and can't accomplish a cutter processing plane counterbore and inclined-plane counterbore simultaneously, necessary tool changing in the way, and precision is not high, in case and the amount of feeding greater than 0.12mm/rev after, the aperture of general milling cutter can enlarge less stable rapidly.

Summary of the invention

Of the present utility model provide a kind of can High-speed machining, counterbore processing that efficient is high use carbide-tipped milling cutter, solved short, chip removal in above-mentioned service life not freely, problems such as less stable.

In order to achieve the above object, the utility model has designed a kind of counterbore processing carbide-tipped milling cutter, comprise by two helical edges and two blades that chip area constitutes, and the handle of a knife that connects blade, it is characterized in that: described handle of a knife is T type structure, and its top offers and is used to milling cutter to stablize the oil supply slotted eye of oil supply; The helical edges shear blade area of described blade is slightly larger than the baseplane area of chip area, at the circular arc notch of described two helical edges shear blade connecting places formation chip area, the arc radius R=5～6mm of this circular arc notch.

As further improvement, the lip surface area of described helical edges shear blade is 1.5～2 times of rear edge face area.

As further improving the cutter footpath Ф≤12mm of described blade, bottom surface flatness F≤0.02mm.

As further improving the cutter footpath Ф＞12mm of described blade, bottom surface flatness F≤0.03mm.

The utility model process velocity is fast, the efficient height, and torque ratio existing milling cutter in the left and right sides reduces 45%, long service life; Chip removal is unobstructed, the flatness of the parts bottom surface after the processing is better, processing plane counterbore and inclined-plane counterbore simultaneously, and the range of work is wide, and precision is higher, and processing aperture extensive magnitude is little, and stability is strong.

Description of drawings

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the structural representation of the utility model blade bottom.

Referring to Fig. 1 and Fig. 2,1 is blade; 2 is handle of a knife; 3 is the oil supply slotted eye; 4 is the helical edges shear blade; 5 is chip area; 6 is the circular arc notch; 41 is lip surface; 42 is the rear edge face.

The specific embodiment

Now in conjunction with the accompanying drawings and embodiments the utility model is described further.

As shown in Figure 1, the utility model comprises by two helical edges and two blades 1 that chip area constitutes, and the handle of a knife 2 that connects blade, and handle of a knife 2 is T type structure, and its top offers and is used to milling cutter to stablize the oil supply slotted eye 3 of oil supply; Referring to Fig. 2, helical edges shear blade 4 areas of blade 1 are slightly larger than the baseplane area of chip area 5, at the circular arc notch 6 of two helical edges shear blade 4 connecting places formation chip areas 5, the arc radius R=5～6mm of this circular arc notch 6, the area broadness of this chip area 5 can realize light chip removal; Lip surface 41 areas of helical edges shear blade 4 are 1.5～2 times of rear edge face 42 areas, and the general milling cutter of the cutting of this helical edges shear blade 4 is sharp, realize that low axially cutting opposing is low, cut in extensive range, the machining accuracy height.

Embodiment 1

In the present embodiment, the arc radius R=5mm of circular arc notch 6, lip surface 41 areas of helical edges shear blade 4 are 1.5 times of rear edge face 42 areas, the cutter footpath Ф≤12mm of blade 1, bottom surface flatness F≤0.02mm.

Embodiment 2

In the utility model, the arc radius R=6mm of circular arc notch 6, lip surface 41 areas of helical edges shear blade 4 are 2 times of rear edge face 42 areas, the cutter footpath Ф＞12mm of blade, bottom surface flatness F≤0.03mm.

By above-described embodiment and accompanying drawing as can be seen, the utility model process velocity is fast, the efficient height, and torque ratio existing milling cutter in the left and right sides reduces 45%, long service life; Chip removal is unobstructed, the flatness of the parts bottom surface after the processing is better, processing plane counterbore and inclined-plane counterbore simultaneously, and the range of work is wide, and precision is higher, and after the amount of feeding was greater than 0.12mm/rev, processing aperture extensive magnitude was little, and stability is strong.

Although content of the present utility model has been done introduction by above preferred embodiment, will be appreciated that above-described embodiment should not be considered to restriction of the present utility model.After those skilled in the art have read foregoing, for multiple modification of the present utility model with to substitute all will be apparent.Therefore, protection domain of the present utility model should be limited to the appended claims.

Claims

1. carbide-tipped milling cutter is used in a counterbore processing, comprise by two helical edges and two blades that chip area constitutes, and the handle of a knife that connects blade, it is characterized in that: described handle of a knife is T type structure, its top offers and is used to milling cutter to stablize the oil supply slotted eye of oil supply; The helical edges shear blade area of described blade is slightly larger than the baseplane area of chip area, at the circular arc notch of described two helical edges shear blade connecting places formation chip area, the arc radius R=5～6mm of this circular arc notch.

2. carbide-tipped milling cutter is used in counterbore processing according to claim 1, and it is characterized in that: the lip surface area of described helical edges shear blade is 1.5～2 times of rear edge face area.

3. carbide-tipped milling cutter is used in counterbore processing according to claim 1 and 2, it is characterized in that: the cutter footpath Ф≤12mm of described blade, bottom surface flatness F≤0.02mm.

4. carbide-tipped milling cutter is used in counterbore processing according to claim 1 and 2, it is characterized in that: the cutter footpath Ф＞12mm of described blade, bottom surface flatness F≤0.03mm.