CN204800030U - Blade is stair -step arrangement's milling cutter that inserts - Google Patents

Abstract

The utility model discloses a blade is stair -step arrangement's milling cutter that inserts, including cutter body (1), screw (2), low tooth (3), blade pad (4) and high tooth (5), its characterized in that the blade arrange according to the ladder on the cutter body and arrange, form radial and axial side set, the wrong space width of axial is 0.08-0.2mm, directly disclination space width is 4-8mm, axial rake - 5 is set to the blade - - the 5o degree, and radial rake is - 3 - - 3.

Description

A plunging milling cutter with blades arranged in steps

technical field

The utility model relates to a high-efficiency metal cutting tool, in particular to a plunge milling cutter fed along the z-axis.

Background technique

Plunge milling has the advantages of high processing efficiency and the ability to efficiently remove a large amount of metal material. Since the maximum radial cutting width of plunge milling is limited by the blade width (the maximum radial cutting width cannot exceed 2/3 of the radial width of the blade), and the load of the plunge mill blade increases during rough machining with a large cutting width, The blade is easily damaged, which reduces the service life of the blade, especially for plunge milling with a relatively large length and diameter, and also causes processing vibration. If the method of reducing the radial cutting width, step distance or reducing the feed rate per tooth is adopted, although the vibration in plunge milling cutting under the aspect ratio can be avoided and the tool life can be prolonged, the metal removal rate will be reduced. In order to give full play to the high-efficiency machining characteristics of plunge milling, a new type of plunge milling tool is needed, which can not only choose a larger radial cutting width, but also reduce the load on the blade.

Contents of the invention

The utility model patent provides a new type of plunger milling cutter. The blades installed in it are arranged in steps, that is, the blades are arranged in layers according to a certain size difference in the axial and radial directions of the milling cutter body.

The plunge milling cutter with blades arranged in steps includes: a plunge milling cutter body, a blade pad, high teeth, low teeth, and screws.

The plunge milling cutter whose blades are arranged in steps adopts a mandrel-type cutter body structure.

The insert milling cutter whose blades are arranged in steps has blade pads under the blades, and the blades and blade pads are connected to the cutter body through bolts.

The plunge milling cutter with blades arranged in steps has six teeth, and the blades are arranged in layers according to a certain size difference in the axial and radial directions of the milling cutter body. The radial distance is 0.08~0.2mm, and the radial distance is 4~8mm.

The blades of the plunge milling cutter with blades arranged in steps are square blades with a relief angle of 7°.

The blades of the plunge milling cutter with blades arranged in steps are arranged at unequal distances on the circumference of the cutter body, and the unequal distribution angles are 65 ^° , 57 ^° , 63 ^° , 55 ^° , 61 ^° , and 59° respectively. °.

The radial rake angle of the plunge milling cutter with the blades arranged in a stepped shape is -3°-3°, the axial rake angle is -5°-5°, and the entering angle is 87°-92° °.

The plunge milling cutter arranged in a stepped shape has high teeth and low teeth arranged in a circle at intervals.

Beneficial effect:

The utility model can rationally distribute the load borne by the blade under the condition of large radial cutting width, increase the cutting depth, improve the processing efficiency of the plunge milling cutter, and the cutting tool life is not significantly reduced under the condition of increasing the cutting depth and width.

Description of drawings:

Accompanying drawing 1 is the three-dimensional view of plunge-milling tool of the present utility model.

Accompanying drawing 2 is the structural diagram of plunge milling cutter of the present utility model.

Accompanying drawing 3 is the schematic diagram of the simultaneous cutting state of the double-layer blades of the milling cutter of the present invention.

Accompanying drawing 4 is the schematic diagram of angle distribution of unequal distances of insert milling cutter blades of the present utility model.

Detailed ways

Embodiment 1: A plunger milling cutter with blades arranged in a stepped shape comprises: a plunger milling cutter body, a blade pad, a blade, and a screw. The plunger milling cutter body is equipped with 6 blades, and the blades The axial and radial directions of the cutter body are arranged in a layered shape according to a certain size difference, and the above-mentioned plunge milling cutter with blades arranged in a stepped shape adopts a mandrel-type cutter body structure.

Embodiment 2: The insert milling cutter whose blades are arranged in steps has a blade pad under the blade, and the blade and the insert pad are connected to the cutter body through bolts, and the insert milling cutter whose blades are arranged in steps The blade of the knife is a square blade with a relief angle of 7°. The radial rake angle of the insert milling cutter with the blades arranged in a stepped shape is -3°-3°, and the axial rake angle is -5°- -5°, the main deflection angle is 87°--92°, the cutter body of the plunge milling cutter has a large chip pocket, and the blades of the plunge milling cutter in which the blades are arranged in steps are not equidistant Setting, the blade distribution angles are 65°, 57°, 63°, 55°, 61°, 59° respectively.

Embodiment 3: The plunge milling cutter with blades arranged in steps can adopt a large cutting width when the power and rigidity of the machine tool are sufficient. At this time, the high teeth and low teeth participate in cutting at the same time. When cutting, a small depth of cut must be used. At this time, only the high teeth participate in the cutting, and the low teeth do not participate in the cutting.

Claims (6)

1. a plug in milling cutter for the stepped arrangement of blade, its composition comprises, and milling cutter body, blade pad, blade, bolt, is characterized in that blade is connected with cutter hub by bolt, has blade pad between blade and cutter hub.

2. the plug in milling cutter of the stepped arrangement of a kind of blade according to claim 1, it is characterized in that the blade of the plug in milling cutter of the described stepped arrangement of a kind of blade all arranges according to certain difference in size in the axis of milling cutter body and radial direction, axial side set spacing is 0.08 ~ 0.2mm, and radial side set spacing is 4 ~ 8mm.

3. according to the plug in milling cutter of the stepped arrangement of a kind of blade described in claim 1 or 2, it is characterized in that there is blade pad between blade and cutter hub, blade does not directly contact with cutter hub, and blade is indexable.

4. the plug in milling cutter of the stepped arrangement of a kind of blade according to claim 1 and 2, is characterized in that the be set to unequal blade spacing of blade on cutter hub is arranged.

5. the plug in milling cutter of the stepped arrangement of a kind of blade according to claim 4, is characterized in that the unequal blade spacing distribution values of blade on cutter hub is 65 °, 57 °, 63 °, 55 °, 61 °, 59 °.

6. the plug in milling cutter of the stepped arrangement of a kind of blade according to claim 1 and 2, is characterized in that blade shaft is to being-5 °--5 °, radial direction is 3 °--, and 3 °, the tool cutting edge angle of high tooth and low tooth is 87 °--92 °.