CN108942646B

CN108942646B - Planetary gear type magnetic composite fluid polishing device

Info

Publication number: CN108942646B
Application number: CN201810763281.4A
Authority: CN
Inventors: 姜晨; 洪小兰; 高睿; 钱大兵; 严广和
Original assignee: University of Shanghai for Science and Technology
Current assignee: University of Shanghai for Science and Technology
Priority date: 2018-07-12
Filing date: 2018-07-12
Publication date: 2020-04-21
Anticipated expiration: 2038-07-12
Also published as: CN108942646A

Abstract

The invention relates to a planetary gear type magnetic composite fluid polishing device.A bearing seat is fixedly connected to the lower end of a case, and the lower end of the bearing seat is rotatably connected with a shell through a limiting plate; a motor is fixedly connected in the case through a mounting plate, and a main shaft of the motor is fixedly connected with a rotating shaft through a coupling; the upper part of the rotating shaft is arranged in the bearing seat through a bearing, and the lower part of the rotating shaft is connected with a bottom plate of the bearing seat through a U-shaped bearing; the U-shaped bearing is fixedly connected with a needle rod positioned in the shell, the upper part of the needle rod is fixedly connected with a main planet wheel, the main planet wheel is meshed with an auxiliary planet wheel, the auxiliary planet wheel is meshed with an inner gear on the upper part of the shell, and the auxiliary planet wheel is rotatably connected with the needle rod through a connecting shaft; the lower part of the needle rod is fixedly connected with a plurality of magnet rings, the magnet rings are arranged in the shell, the needle rod is driven by the motor to drive the main planetary gear and the connecting shaft to rotate, the auxiliary planetary gear rotates around the main planetary gear, the auxiliary planetary gear enables the inner gear and the main planetary gear to rotate in the opposite direction, and therefore the rotation direction of the shell is opposite to that of the magnet rings.

Description

Planetary gear type magnetic composite fluid polishing device

Technical Field

The invention relates to a magnetic composite fluid polishing device, in particular to a planetary gear type magnetic composite fluid polishing device, and belongs to the technical field of deep hole fluid polishing.

Background

MCF polishing is a novel nano-scale ultra-precision processing technology, the viscosity of fluid can be kept to be continuously and steplessly changed under the action of a controllable magnetic field, controllable and deterministic processing can be realized, and the MCF polishing head is controllable and variable. Currently, the use of MCF for aperture polishing is not common. Aiming at the technical vacancy, the invention designs the planetary gear type composite fluid polishing device which has the advantages of more compact integral structure, smaller device and convenient installation, increases the removal rate of the polishing head, is not easy to generate interference during working and can be used for polishing the aperture surface.

Disclosure of Invention

The invention aims to provide a planetary gear type magnetic composite fluid polishing device aiming at the technical defects.

In order to solve the above-mentioned purpose, the invention provides the following technical scheme:

a planetary gear type magnetic composite fluid polishing device comprises a case, a motor, a bearing seat, a limiting plate and a shell, wherein the lower end of the case is fixedly connected with the bearing seat, and the lower end of the bearing seat is rotatably connected with the shell through the limiting plate; a motor is fixedly connected in the case through a mounting plate, and a main shaft of the motor is fixedly connected with a rotating shaft through a coupling; the upper part of the rotating shaft is arranged in the bearing seat through a bearing, and the lower part of the rotating shaft is connected with a bottom plate of the bearing seat through a U-shaped bearing; the U-shaped bearing is fixedly connected with a needle rod positioned in the shell, the upper part of the needle rod is fixedly connected with a main planet wheel, the main planet wheel is meshed with an auxiliary planet wheel, the auxiliary planet wheel is meshed with an inner gear on the upper part of the shell, and the auxiliary planet wheel is rotatably connected with the needle rod through a connecting shaft; the lower part of the needle rod is fixedly connected with a plurality of magnet rings, the magnet rings are arranged in the shell, the needle rod is driven by the motor to drive the main planetary gear and the connecting shaft to rotate, the auxiliary planetary gear rotates around the main planetary gear, the auxiliary planetary gear enables the inner gear and the main planetary gear to rotate in the opposite direction, and therefore the rotation direction of the shell is opposite to that of the magnet rings.

Furthermore, the mounting panel is L type radian board, and the mounting panel vertical direction passes through the screw installation in the inside of quick-witted case, and the radian agrees with the inner wall of quick-witted case, and the mounting panel horizontal direction is the circular slab, is provided with the perforation of main shaft on the mounting panel and is greater than the diameter of main shaft.

Further, the limiting plate is cylindrical, and the top and the equal opening in below, the top pass through the screw connection in the below of bearing frame outside, and below opening diameter is less than the diameter of bearing frame, is greater than the diameter of shell.

Further, the magnet ring is provided with a through hole matched with the needle rod, and the outer diameter of the magnet ring is smaller than that of the shell.

Furthermore, L-shaped rods are arranged on two sides of the connecting shaft, the diameter of the top ends of the L-shaped rods is smaller than that of the connecting shaft, and the top ends of the two L-shaped rods are connected with the two auxiliary planet wheels through fixing nuts.

Compared with the prior art, the invention has the beneficial effects that:

the auxiliary planet wheel enables the inner gear and the main planet wheel to rotate reversely, the structure of the planet wheel enables the whole structure to be more stable and compact, the whole device is smaller and more convenient to install, the movement on a machine tool is more flexible, and the polishing device can be used for polishing smaller apertures; the inversion of the shell and the magnet ring facilitates the molding of the polishing head and increases the removal rate of the polishing head; the structure is not easy to generate interference in processing.

Drawings

FIG. 1 is a schematic structural diagram of a planetary gear type magnetic composite fluid polishing device;

FIG. 2 is a schematic structural diagram of a housing of the planetary gear type magnetic composite fluid polishing apparatus;

FIG. 3 is a schematic structural diagram of a main planetary gear in the planetary gear type magnetic composite fluid polishing device;

in the figure: 1-cover plate, 2-case, 3-mounting plate, 4-motor, 5-bearing seat, 6-bearing, 7-limiting plate, 8-shell, 9-magnet ring, 10-needle bar, 11-main planetary gear, 12-U-shaped bearing, 13-rotating shaft, 14-coupling, 15-main shaft, 16-screw, 17-internal gear, 18-nut, 19-baffle, 20-internal gear, 21-connecting shaft, 22-fixing nut, 23-auxiliary planetary gear and 24-bottom plate.

Detailed Description

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

Referring to fig. 1 to 3, in the present embodiment: a planetary gear type magnetic composite fluid polishing device comprises a case 2, a motor 4, a bearing seat 5, a limiting plate 7, a shell 8 and main planetary wheels 11. The case 2 is cylindrical, the upper part and the lower part of the case are both opened, and the case 2 is provided with a cover plate 1, a mounting plate 3, a motor 4 and screws 16; the cover plate 1 is arranged above the case 2 and is a circular plate, and the cover plate 1 is connected to the case 2 through a screw 16; the mounting plate 3 is an L-shaped plate, the mounting plate 3 is mounted inside the case 2 through a screw 16 in the vertical direction, the radian of the mounting plate is matched with the inner wall of the case 2, the mounting plate 3 is a circular plate in the horizontal direction, and a through hole of the spindle 15 is formed in the mounting plate 3 and is larger than the diameter of the spindle 15; the motor 4 is arranged on the mounting plate 3 through a screw 16, and the motor 4 is provided with a main shaft 15; a coupler 14 is arranged on the main shaft 15; the coupler 14 is connected below the main shaft 15, and a rotating shaft 13 is arranged below the coupler 14; the bearing seat 5 is connected to the lower inner part of the case 2 through a screw 16, and a bearing 6 and a bottom plate 24 are arranged on the bearing seat 5; the bearing 6 is arranged inside the bearing seat 5, and the diameter of the bearing seat 5 below the bearing 6 is smaller than the outer diameter of the bearing 6; the bottom plate 24 is arranged at the bottom of the bearing seat 5; the rotating shaft 13 is arranged on the bearing 6, a shaft shoulder of the rotating shaft 13 is arranged above the bearing 6, and a U-shaped bearing 12 is arranged below the rotating shaft 13; the U-shaped bearing 12 is arranged on the bottom plate 24, and the U-shaped bearing 12 is connected below the rotating shaft 13 through a screw 16; the limiting plate 7 is cylindrical, the upper part and the lower part of the limiting plate are both provided with openings, the upper part of the limiting plate is connected to the outer part of the lower part of the bearing seat 5 through a screw 16, and the diameter of the opening of the lower part is smaller than that of the bearing seat 5 and larger than that of the shell 8; the outer shell 8 is provided with an internal gear 17, the diameter of the outer shell 8 is smaller than that of the internal gear 17, the outer shell 8 is connected with the internal gear 17, and the bottom end of the outer shell 8 is arc-shaped; the internal gear 17 is arranged inside the limit plate 7, the internal gear 17 is cylindrical, and the internal gear 17 is provided with internal teeth 20; the inner teeth 20 are provided in number; the main planet gear 11 is provided with a needle bar 10, a connecting shaft 21 and an auxiliary planet gear 23, and the main planet gear 11 is fixed on the needle bar 10 through a screw 16 and is arranged below the U-shaped bearing 12; the needle rod 10 is provided with a magnet ring 9, a baffle plate 19 and a nut 18, the needle rod 10 penetrates through the U-shaped bearing 12, and the U-shaped bearing 12 is fixed on the needle rod 10 through a screw 16; the magnet rings 9 are provided with through holes matched with the needle rod 10, the outer diameter of each magnet ring 9 is smaller than that of the shell 8, and a plurality of magnet rings 9 are arranged; the baffle plate 19 is arranged at the top of the needle bar 10 and inside the U-shaped bearing 12, and the diameter of the baffle plate 19 is larger than that of the needle bar 10; the nut 18 is arranged at the bottom of the needle bar 10, and the bottom of the needle bar 10 is provided with threads matched with the nut 18; the connecting shaft 21 is fixed below the main planet wheel 11 and on the needle bar 10, two L-shaped rods are arranged on two sides of the connecting shaft 21, and the connecting shaft 21 is provided with a fixing nut 22; the number of the auxiliary planet wheels 23 is two, the auxiliary planet wheels are connected to the top ends of two L-shaped rods of the connecting shaft 21, the diameter of the top ends of the L-shaped rods is smaller than that of the connecting shaft 21, and threads matched with the fixing nuts 22 are arranged at the top ends of the L-shaped rods; the fixing nut 22 is arranged at the top end of the connecting shaft 21; the main planet wheel 11 is matched with gears of two auxiliary planet wheels 23, and internal teeth of the rest internal gears 17 of the two auxiliary planet wheels 23 are matched with each other.

The working principle of the invention is as follows:

after the motor 4 is electrified, the motor 4 rotates to drive the main shaft 15 to rotate, the main shaft 15 drives the rotating shaft 13 to rotate through the coupler 14, the rotating shaft 13 is kept stable through the bearing 6, the rotating shaft 13 is kept stable through the U-shaped bearing 12 and is connected with the needle rod 10, the rotating shaft 13 drives the needle rod 10 to rotate, the needle rod 10 drives the main planet wheel 11 and the connecting shaft 21 to rotate, the auxiliary planet wheel 23 rotates around the main planet wheel 11, the auxiliary planet wheel 23 enables the inner gear 17 and the main planet wheel 11 to rotate in the opposite direction, the main planet wheel 11 and the auxiliary planet wheel 23 enable the rotation of the shell 8 to be more stable, the conventional structure enables the shell 8 and the magnet ring 9 to rotate in the opposite direction, the structure of the planet wheel enables the whole structure to be more compact, the whole device can process smaller materials, the shell 8 is connected with the inner gear 17, and the rotation of the shell 8, because the magnetic force distribution of magnet ring 9 is evenly distributed, so magnet ring 9 makes the burnishing head shaping faster through the reversal of shell 8 and magnet ring 9 with the even absorption of the outside polishing solution of shell 8 on the outer wall of shell 8 through magnetic force, polishes the hole that needs the polishing, and after whole device is more small and exquisite, the removal on the lathe receives the factor of interference to reduce, and is more nimble convenient, and can adapt to different types of lathe.

Claims

1. A planetary gear type magnetic composite fluid polishing device comprises a case (2), a motor (4), a bearing seat (5), a limiting plate (7) and a shell (8), and is characterized in that the lower end of the case (2) is fixedly connected with the bearing seat (5), and the lower end of the bearing seat (5) is rotatably connected with the shell (8) through the limiting plate (7); the motor (4) is fixedly connected in the case (2) through the mounting plate (3), and a main shaft (15) of the motor (4) is fixedly connected with the rotating shaft (13) through a coupling (14); the upper part of the rotating shaft (13) is arranged in the bearing seat (5) through a bearing (6), and the lower part of the rotating shaft is connected with a bottom plate (24) of the bearing seat (5) through a U-shaped bearing (12); the U-shaped bearing (12) is fixedly connected with a needle rod (10) positioned in the shell (8), the upper part of the needle rod (10) is fixedly connected with a main planet wheel (11), the main planet wheel (11) is meshed with an auxiliary planet wheel (23), the auxiliary planet wheel (23) is meshed with an inner gear (17) arranged on the upper part of the shell (8), and the auxiliary planet wheel (23) is rotatably connected with the needle rod (10) through a connecting shaft (21); the lower portion of the needle rod (10) is fixedly connected with a plurality of magnet rings (9), the magnet rings (9) are arranged in the shell (8), the needle rod (10) is driven by the motor (4) to drive the main planetary wheel (11) and the connecting shaft (21) to rotate, the auxiliary planetary wheel (23) rotates around the main planetary wheel (11), the auxiliary planetary wheel (23) enables the inner gear (17) and the main planetary wheel (11) to rotate in the opposite direction, and therefore the rotation direction of the shell (8) is opposite to that of the magnet rings (9).

2. The planetary gear type magnetic composite fluid polishing device according to claim 1, characterized in that: the mounting panel (3) are L-shaped arc plates, the mounting panel (3) is vertically mounted inside the case (2) through screws (16), the arc is matched with the inner wall of the case (2), the mounting panel (3) is horizontally a circular plate, and the mounting panel (3) is provided with a through hole of the spindle (15) and is larger than the diameter of the spindle (15).

3. The planetary gear type magnetic composite fluid polishing device according to claim 1, characterized in that: the limiting plate (7) is cylindrical, the upper part and the lower part are both provided with openings, the upper part is connected to the outer part of the lower part of the bearing seat (5) through a screw (16), and the diameter of the opening of the lower part is smaller than that of the bearing seat (5) and larger than that of the shell (8).

4. The planetary gear type magnetic composite fluid polishing device according to claim 1, characterized in that: the magnet ring (9) is provided with a through hole matched with the needle rod (10), and the outer diameter of the magnet ring (9) is smaller than that of the shell (8).

5. The planetary gear type magnetic composite fluid polishing device according to claim 1, characterized in that: the two sides of the connecting shaft (21) are provided with L-shaped rods, the diameter of the top ends of the L-shaped rods is smaller than that of the connecting shaft (21), and the top ends of the two L-shaped rods are connected with two auxiliary planet wheels (23) through fixing nuts (22).