CN213104701U

CN213104701U - Differential double-layer milling cutter and milling machine for machining large-scale component

Info

Publication number: CN213104701U
Application number: CN202022197974.7U
Authority: CN
Inventors: 刘在新; 刘洪伟
Original assignee: Shandong Zouping Petrochemical Machinery Co ltd
Current assignee: Shandong Zouping Petrochemical Machinery Co ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-05-04
Anticipated expiration: 2030-09-29

Abstract

The utility model relates to a, double-deck milling cutter of differential and milling machine are used in processing of large-scale component. The technical scheme is that the differential double-layer milling cutter for machining the large-scale component is characterized in that a planetary reducer is arranged at the lower part of a cutter handle, and the cutter handle penetrates through a sun gear of the planetary reducer and is fixedly connected with the sun gear; an annular first cutter head is fixedly arranged on the periphery of a gear ring of the planetary reducer; the cutter handle passes through the planetary reducer's one end and installs the second blade disc, and the diameter of second blade disc is less than the diameter of first blade disc, provides a milling machine of installation this milling cutter simultaneously. The beneficial effects of the utility model are that, first blade disc and second blade disc pass through planetary reducer differential and rotate, and first blade disc low rotational speed removes the material and rough mills, and the high rotational speed finish milling of second blade disc, this design make rough milling and finish milling go on simultaneously, have improved the machining efficiency of large-scale component and big terminal surface greatly.

Description

Differential double-layer milling cutter and milling machine for machining large-scale component

Technical Field

The utility model relates to a machine tool equipment field especially relates to a double-deck milling cutter of differential and milling machine are used in processing of large-scale component.

Background

The end milling cutter has a wide processing range and is suitable for end face cutting of metal materials such as castings, steel pieces and the like. For a large component, the end face machining of the large component is often characterized by large end face area and large material removing depth, and the large component is time-consuming and labor-consuming to hoist, so that rough milling and finish milling of the large component are often completed on the same milling machine in sequence, the rough milling rotating speed is low, and the tool consumption is large; the finish milling has high rotating speed and small tool consumption.

Therefore, the milling step of the large-sized component is generally rough milling and then finish milling, but because the area of the end surface of the large-sized component is large, the time consumed for twice processing is too long, and the improvement of the production efficiency is not facilitated.

Disclosure of Invention

The utility model discloses milling process to large tracts of land terminal surface is earlier roughly milled the long problem of back finish milling process time, provides a large-scale component processing that can roughly mill simultaneously and finish milling uses the double-deck milling cutter of differential.

In order to solve the problems, the technical scheme adopted by the utility model is that the differential double-layer milling cutter for processing the large-scale component is provided with a planetary reducer at the lower part of the cutter handle, and the cutter handle passes through a sun gear of the planetary reducer and is fixedly connected with the sun gear; an annular first cutter head is fixedly arranged on the periphery of a gear ring of the planetary reducer; the cutter handle passes through the planetary reducer and is provided with a second cutter head, and the diameter of the second cutter head is smaller than that of the first cutter head. The first cutter disc and the second cutter disc rotate through the planetary speed reducer in a differential mode, the first cutter disc is used for removing materials at a low rotating speed and conducting rough milling, and the second cutter disc is used for conducting finish milling at a high rotating speed.

Preferably, the bottom end of the cutter handle is provided with a spline hole, a spline shaft is arranged at the center of the upper end face of the second cutter head, and the spline hole is in plug-in fit with the spline shaft. The second cutter head can be disassembled and assembled, and simultaneously, the spline transmission can bear large torque and is high in precision.

Preferably, the cutter head further comprises a certain number of cushion blocks, the cushion blocks are in clearance fit with the spline holes, the cushion blocks are inserted into the spline holes, and then the second cutter head is inserted. The height difference between the two cutter discs can be adjusted by mounting the cushion block, and the tool-cut difference between two-stage milling can be adjusted.

Preferably, the milling machine further comprises a fixed rod, the lower end of the fixed rod is rotatably connected with the center of the planet wheel of the planetary reducer, and the upper end of the fixed rod is fixedly connected with the milling machine spindle. The loads of the two-stage simultaneous milling cutter handle and the output shaft of the main shaft are large, and the fixed rod can provide auxiliary support while fixing the position of the planetary wheel.

Preferably, the planetary gear set has a gear ratio of less than 3. The cutting effect is prevented from being influenced by the fact that the rotating speed of the first cutter head is over the bottom.

The utility model also provides a milling machine which is provided with the differential double-layer milling cutter for processing the large-scale component; the lower part of a spindle box of the milling machine is fixedly provided with a fixed seat, the lower surface of the fixed seat is provided with a plurality of fixed jacks, the number of the fixed jacks is equal to that of the fixed rods, the diameters of the fixed jacks are equal to that of the fixed rods, and the fixed rods are inserted into the fixed jacks.

Can find out through above technical scheme, the utility model has the advantages of:

(1) meanwhile, rough milling and finish milling are carried out, so that the machining efficiency is greatly improved, and the method is suitable for machining large components and large end faces;

(2) the milling cutting allowance is convenient to adjust;

(3) the support and the transmission are stable, and the processing precision is high.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a bottom view of the embodiment of the present invention.

Fig. 3 is an exploded view of the structure of fig. 1.

Fig. 4 is a schematic structural diagram of a planetary reducer according to an embodiment of the present invention.

Fig. 5 is a schematic structural diagram of the milling machine spindle of the present invention.

In the figure: 1. the cutter comprises a cutter handle, 11 spline holes, 2 planetary speed reducers, 21 sun gears, 22 planetary gears, 23 gear rings, 3 first cutter heads, 4 second cutter heads, 41 spline shafts, 5 fixing rods and 6 cushion blocks;

milling machine main shaft: 71. the tool comprises a main spindle box, 72 parts of a fixed seat, 73 parts of a fixed insertion hole, 74 parts of an output shaft and 75 parts of a broach claw.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments, and obviously, the embodiments described below are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of protection of this patent.

As shown in fig. 1-4, a differential double-layer milling cutter for processing a large-scale component, wherein a planetary reducer 2 is arranged at the lower part of a cutter handle 1 of the milling cutter, and the cutter handle 1 penetrates through a sun gear 21 of the planetary reducer 2 and is fixedly connected with the sun gear 21; the planet wheels 22 of the planetary reducer 2 are fixed in position; an annular first cutter disc 3 is fixedly arranged on the periphery of a gear ring 23 of the planetary reducer 2; the center of the end face of one end, penetrating through the planetary reducer 2, of the cutter handle 1 is provided with a spline hole 11, the center of the upper end face (with the milling face of the cutter head as the lower part) of the second cutter head 4 is provided with a spline shaft 41, the second cutter head 4 is installed at the lower end of the cutter handle 1 through the splicing fit of the spline hole 11 and the spline shaft 41, the cutter handle 1 is an input shaft of the planetary reducer 2, and the cutter handle 1 drives the second cutter head 4 and simultaneously drives the first cutter head 3 to rotate through the planetary reducer 2.

The double-layer milling cutter further comprises a fixed rod 5, the lower end of the fixed rod 5 penetrates through a shell of the planetary reducer 2 and is connected with a central bearing of a planetary wheel 22 of the planetary reducer 2, the planetary wheel 22 can rotate by taking the fixed rod 5 as a shaft, and the upper end of the fixed rod 5 is fixedly connected with a milling machine spindle to fix the position of the planetary wheel 22.

The spline hole 11 can be provided with a cushion block 6, so that the height difference between the first cutter head 3 and the second cutter head 4 is adjusted, and the difference between the cutting loads of rough milling and finish milling is adjusted; clearance fit is adopted between the cushion block 6 and the spline hole 11, and the taking-out is convenient.

In order to ensure that the rotating speed of the first cutter disc 3 meets the milling requirement, the transmission ratio of the planetary reducer 2 is less than 3.

The utility model also provides a milling machine provided with the double-layer milling cutter, the milling machine spindle is shown in figure 5, the fixing seat 72 is fixedly arranged at the lower part of the spindle box 71, the lower surface of the fixing seat 72 is provided with a plurality of fixing jacks 73, the fixing jacks 73 are equal to the fixing rods 5 in quantity and in diameter, and the fixing rods 5 are inserted in the fixing jacks 73; an output shaft 74 of the machine tool spindle penetrates out of the center of the fixed seat 72, and the lower end of the output shaft 74 is provided with a broach claw 75.

When the double-layer milling cutter is matched with a milling machine for use, the difference of the tool consumption between rough milling and finish milling is planned as required, the corresponding cushion block 6 is arranged in the spline hole 11, and then the spline shaft 41 of the second cutter head 4 is inserted into the spline hole 11; the tool shank 1 is matched with a broach jaw 75 of the main shaft, and the fixing rod 5 is inserted into the fixing insertion hole 73; an output shaft 74 of the milling machine spindle rotates, the second cutter head 4 is driven to rotate through the cutter pulling claw 75 and the cutter handle 1, and meanwhile, the cutter handle 1 is decelerated through the planetary reducer 2 to drive the first cutter head 3 to rotate; and feeding by the milling machine, roughly milling the workpiece by the first cutter disc 3, and finely milling the workpiece by the second cutter disc 4.

Can find out through above embodiment, the beneficial effects of the utility model are that: the rough milling and the finish milling can be simultaneously carried out, the processing efficiency is greatly improved, and the method is suitable for processing large components and large end faces; the milling cutting allowance is convenient to adjust; the support and the transmission are stable, and the processing precision is high.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The differential double-layer milling cutter for machining the large-scale component is characterized in that a planetary reducer (2) is arranged at the lower part of a cutter handle (1), and the cutter handle (1) penetrates through a sun gear (21) of the planetary reducer (2) and is fixedly connected with the sun gear (21); an annular first cutter head (3) is fixedly arranged on the periphery of a gear ring (23) of the planetary reducer (2); the cutter handle (1) penetrates through one end of the planetary reducer (2) and is provided with a second cutter head (4), and the diameter of the second cutter head (4) is smaller than that of the first cutter head (3).

2. The differential double-layer milling cutter for machining the large components according to claim 1, wherein a spline hole (11) is formed in the bottom end of the cutter handle (1), a spline shaft (41) is arranged in the center of the upper end face of the second cutter head (4), and the spline hole (11) is in plug-in fit with the spline shaft (41).

3. The differential double-layer milling cutter for machining the large-scale component according to claim 2, further comprising a certain number of cushion blocks (6), wherein the cushion blocks (6) are in clearance fit with the spline holes (11), and the cushion blocks (6) are inserted into the spline holes (11) and then inserted into the second cutter head (4).

4. The differential double-layer milling cutter for machining the large-scale component as claimed in any one of claims 1 to 3, further comprising a fixing rod (5), wherein the lower end of the fixing rod (5) is rotatably connected with the center of the planet wheel (22) of the planetary reducer (2), and the upper end of the fixing rod (5) is fixedly connected with a milling machine spindle.

5. A differential double-deck milling cutter for machining large components according to any one of claims 1 to 3, wherein the gear ratio of the planetary reduction gear (2) is less than 3.

6. A milling machine characterized by being equipped with the differential double-deck milling cutter for machining a large-sized member according to claim 4;

a fixed seat (72) is fixedly installed on the lower portion of a spindle box (71) of the milling machine, a plurality of fixed insertion holes (73) are formed in the lower surface of the fixed seat (72), the number of the fixed insertion holes (73) is equal to that of the fixed rods (5), the diameters of the fixed insertion holes are equal to that of the fixed rods (5), and the fixed rods (5) are inserted into the fixed insertion holes (73).