CN215824349U

CN215824349U - 5 megawatt general wind generating set hub major diameter high feed finish milling cutter

Info

Publication number: CN215824349U
Application number: CN202121431692.7U
Authority: CN
Inventors: 徐惠民; 何军; 项苏建
Original assignee: Hex Machinery Taixing Co ltd
Current assignee: Hex Machinery Taixing Co ltd
Priority date: 2021-06-26
Filing date: 2021-06-26
Publication date: 2022-02-15
Anticipated expiration: 2031-06-26

Abstract

The utility model discloses a 5 megawatt universal wind generating set hub large-diameter high-feed finish milling cutter which comprises a cutter handle and a cutter head detachably connected with the cutter handle, wherein a blade is detachably connected to the cutter head, the diameter of the cutter head is 185mm, the cross section of the blade, perpendicular to a cutting edge, is square or rectangular, and the joint of the blade and the cutter head is positioned at the center of the square or has a certain distance with the center of the rectangle. The large-diameter high-speed finish milling cutter is adopted, the diameter reaches D185mm, and the diameter corresponding to the effective cutting area is D160 mm; the blade is made of CVD hard alloy and TiCN coating, and the linear speed of 350 m/min can be obtained. Designing the shape of the blade: the main deflection angle of the cutter point is 15 degrees, the circular arc R of the cutter point is 1.6, the finishing edge is more than or equal to 4m m, and the feeding per tooth of 0.5-1mm is obtained. After the workpiece is actually used on site, the surface roughness Ra3.2-6.3 of the workpiece completely meets the requirements of drawings.

Description

5 megawatt general wind generating set hub major diameter high feed finish milling cutter

Technical Field

The utility model relates to a large-diameter high-feed finish milling cutter for a hub of a 5-megawatt universal wind generating set.

Background

The surfaces of large parts in industries such as wind power and the like need finish milling, but because the area is large, the diameter of a traditional milling cutter is small, the feeding is slow, and the finish milling time is long. Referring to fig. 3 and 4, the areas of a certain type of wind power hub and a certain type of base which need finish milling reach 16.8 square meters and 9.3 square meters respectively.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provide a large-diameter high-feed finish milling cutter for a hub of a 5-megawatt universal wind generating set, wherein the diameter of the finish milling cutter reaches D185mm by adopting the large-diameter high-speed finish milling cutter, and the diameter corresponding to the effective cutting area is D160 mm; the blade is made of CVD hard alloy and TiCN coating, and the linear speed of 350 m/min can be obtained. Designing the shape of the blade: the main deflection angle of the tool nose is 15 degrees, the arc R of the tool nose is 1.6, the smoothing edge is more than or equal to 4mm, and the feeding of each tooth is up to 0.5-1 mm. After the workpiece is actually used on site, the surface roughness Ra3.2-6.3 of the workpiece completely meets the requirements of drawings.

In order to achieve the purpose, the utility model provides a large-diameter high-feed finish milling cutter for a hub of a 5-megawatt universal wind generating set, which comprises a cutter handle and a cutter head detachably connected with the cutter handle, wherein a blade is detachably connected to the cutter head, the diameter of the cutter head is 185mm, the cross section of the blade, perpendicular to a cutting edge, is square or rectangular, and the joint of the blade and the cutter head is positioned in the center of the square or has a certain distance with the center of the rectangle. The cutter head is detachably connected with the blades, so that after one blade of each blade is worn or damaged, the other blades of the blades can be reused to continue working by detaching the rotating blades, and the service life of the finish milling cutter is prolonged. Because the distance of the blade extending out of the cutter head is slightly increased, when the cross section of the blade perpendicular to the cutting edge is rectangular, the cutting area of the finish milling cutter can be increased by rotating the blade after disassembly, so that the finish milling cutter can have two different cutting diameters, different cutting areas are met, and the applicability of the utility model is further increased.

The further technical scheme is that the blade is made of CVD hard alloy materials, and a TiCN coating is coated on the surface of the blade; the main deflection angle of the tool nose of the blade is 15 degrees, the arc R of the tool nose is 1.6, and the wiper edge is more than or equal to 4 mm.

The further technical scheme is that the cutter head is annular, the outer wall of the ring is provided with cutting edge notches in an annular array by taking the center of the ring as the center, and the notches are detachably connected with the blades.

The further technical proposal is that twelve blades are arranged.

The further technical scheme is that the blade is made of CVD hard alloy, the surface of the blade is detachably connected with a connecting sheet, and the connecting sheet is a sheet body made of TiCN material; the main deflection angle of the tool nose of the blade is 15 degrees, the arc R of the tool nose is 1.6, and the wiper edge is more than or equal to 4 mm.

The further technical scheme is that at least two connecting holes used for connecting the blades are formed in the cutter head, and the two connecting holes are vertically arranged along the cutter shaft direction. Thus arranged, the four cutting edges of the insert are available, with the two cutting edges of the long side and one of the short sides being the corresponding cutting edge of one cutting diameter, and the other short side being the other (i.e., larger) cutting diameter.

The utility model has the advantages and beneficial effects that: a large-diameter high-speed finish milling cutter is adopted, the diameter reaches D185mm, and the diameter corresponding to the effective cutting area is D160 mm; the blade is made of CV D hard alloy and TiCN coating, and the linear speed of 350 m/min can be obtained. Designing the shape of the blade: the main deflection angle of the tool nose is 15 degrees, the arc R of the tool nose is 1.6, the smoothing edge is more than or equal to 4mm, and the feeding of each tooth is up to 0.5-1 mm. After the surface roughness Ra of the workpiece is practically used on site, the surface roughness Ra of the workpiece is 3.2-6.3, and the requirement of a drawing is completely met. The cutter head is detachably connected with the blades, so that after one blade of each blade is worn or damaged, the other blades of the blades can be reused to continue working by detaching the rotating blades, and the service life of the finish milling cutter is prolonged. Because the distance of the blade extending out of the cutter head is slightly increased, when the cross section of the blade perpendicular to the cutting edge is rectangular, the cutting area of the finish milling cutter can be increased by rotating the blade after disassembly, so that the finish milling cutter can have two different cutting diameters, different cutting areas are met, and the applicability of the utility model is further increased.

Drawings

FIG. 1 is a schematic view of a cutter head in a first embodiment of a 5 megawatt general wind generating set hub large-diameter high-feed finish milling cutter of the utility model;

FIG. 2 is a schematic diagram of the present invention;

FIG. 3 is a schematic view of a wind hub of some type being machined;

FIG. 4 is a schematic view of a machined wind base of some type;

FIG. 5 is a schematic view of a second embodiment of the present invention;

FIG. 6 is a schematic view of the blade of FIG. 5 after the cutting position;

fig. 7 is a schematic view of another position of the blade of fig. 5.

In the figure: 1. a knife handle; 2. a cutter head; 3. a blade; 4. a notch; 5. and connecting the holes.

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

The first embodiment is as follows:

as shown in fig. 1 to 2, the utility model relates to a 5-megawatt universal large-diameter high-feed finish milling cutter for a hub of a wind generating set, which comprises a cutter handle 1 and a cutter head 2 detachably connected with the cutter handle 1, wherein a blade 3 is detachably connected to the cutter head 2, the diameter of the cutter head 2 is 185mm, the cross section of the blade 3 perpendicular to a cutting edge is square, and the joint of the blade 3 and the cutter head 2 is positioned at the center of the square. The blade 3 is made of CVD hard alloy material, and the surface of the blade 3 is coated with a TiCN coating; the main deflection angle of the tool nose of the blade 3 is 15 degrees, the arc of the tool nose is R1.6, and the finishing edge is more than or equal to 4 mm. The cutter head 2 is annular, cutting edge notches 4 are arranged on the outer wall of the ring in an annular array by taking the center of the ring as the center, and the notches 4 are detachably connected with the blades 3. Twelve blades 3 are provided.

Example two:

the difference from the first embodiment is that, as shown in fig. 5 to 7, the cross section of the blade 3 perpendicular to the cutting edge is rectangular, and the connection between the blade 3 and the cutter head 2 is at a distance from the center of the rectangle. The cutter head 2 is provided with at least two connecting holes 5 for connecting the blades 3, and the two connecting holes 5 are arranged up and down along the cutter shaft direction.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1.5 megawatt general type wind generating set wheel hub major diameter high feed finish milling cutter, its characterized in that, including the handle of a knife and with the detachable blade disc of being connected of handle of a knife, detachable blade that is connected with on the blade disc, the blade disc diameter is 185mm, the shape of its perpendicular to cutting edge's of blade cross section is square or rectangle, blade and blade disc junction are located the center of square or have a distance with the rectangle center.

2. The 5-megawatt universal wind generating set hub large-diameter high-feed finish milling cutter as claimed in claim 1, wherein the blade is made of CVD hard alloy material, and the surface of the blade is coated with TiCN coating; the main deflection angle of the tool nose of the blade is 15 degrees, the arc R of the tool nose is 1.6, and the wiper edge is more than or equal to 4 mm.

3. The 5-megawatt universal wind generating set hub large-diameter high-feed finish milling cutter as claimed in claim 2, wherein the cutter head is annular, the outer wall of the ring is provided with cutting edge notches in an annular array with the center of the ring as the center, and the cutting edge notches are detachably connected with the blades.

4. The 5 megawatt utility wind turbine hub large diameter high feed finish milling cutter of claim 3 wherein twelve of the blades are provided.

5. The 5-megawatt general wind generating set hub large-diameter high-feed finish milling cutter as claimed in claim 1, wherein the blade is made of CVD hard alloy, the surface of the blade is detachably connected with a connecting sheet, and the connecting sheet is a sheet body made of TiCN material; the main deflection angle of the tool nose of the blade is 15 degrees, the arc R of the tool nose is 1.6, and the wiper edge is more than or equal to 4 mm.

6. The 5 megawatt universal wind generating set hub large-diameter high-feed finish milling cutter as claimed in claim 1, wherein the cutter head is provided with at least two connecting holes for connecting blades, and the two connecting holes are arranged up and down along the cutter shaft direction.