CN112706074A

CN112706074A - Electric grinding mechanism

Info

Publication number: CN112706074A
Application number: CN202110030065.0A
Authority: CN
Inventors: 马祖添
Original assignee: Foshan Huashun Motor Industrial Co ltd
Current assignee: Foshan Huashun Motor Industrial Co ltd
Priority date: 2021-01-11
Filing date: 2021-01-11
Publication date: 2021-04-27

Abstract

The invention discloses an electric grinding mechanism, which comprises a motor, wherein a rotating shaft of the motor is hollow and is used for liquid to pass through; the grinding part is arranged on the outer wall of the power output end of the rotating shaft, at least one first liquid through hole is formed in the wall of the power output end of the rotating shaft, at least one second liquid through hole is formed in the grinding part, the first liquid through hole and the second liquid through hole are correspondingly arranged and can be communicated with each other, and the first liquid through hole is communicated with the inner cavity of the rotating shaft; the invention has reasonable structural design, convenient use, installation space saving and good cooling and grinding effects.

Description

Electric grinding mechanism

Technical Field

The invention relates to grinding equipment, in particular to an electric grinding mechanism.

Background

The existing electric grinding mechanism comprises a motor and a grinding wheel; in the grinding process, grinding fluid is sprayed on a working surface from the outside through an external water pipe; external sprinkler occupation space, it is troublesome to need carry out debugging, installation mode and overall arrangement many times, and it can't dispel the heat to the motor, and the grinding fluid utilization ratio is low, and the cooling effect is poor.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides the electric grinding mechanism which has the advantages of reasonable structural design, convenience in use, installation space saving and good cooling and grinding effects.

An electric grinding mechanism comprises a motor, wherein a rotating shaft of the motor is hollow and is used for liquid to pass through; the grinding part is installed on the outer wall of the power output end of the rotating shaft, at least one first liquid through hole is formed in the wall of the power output end of the rotating shaft, at least one second liquid through hole is formed in the grinding part, the first liquid through hole and the second liquid through hole are correspondingly arranged and can be communicated with each other, and the first liquid through hole is communicated with the inner cavity of the rotating shaft.

Further, the grinding part is a grinding wheel, an inner hole of the grinding wheel is sleeved on the outer wall of the power output end of the rotating shaft, and the second liquid through hole extends to the outer wall of the grinding wheel from the inner hole.

Further, the grinding wheel includes a base and an abrasive ring integrally formed on an outer wall of the base.

Furthermore, a stopping part is arranged on the outer wall of the power output end of the rotating shaft and used for limiting the axial movement of the grinding part, and a locking piece is detachably arranged on the outer wall of the tail end of the power output end of the rotating shaft, so that the grinding part is fixed on the rotating shaft.

Furthermore, the stopping part is a convex ring integrally formed on the outer wall of the power output end of the rotating shaft, and the locking piece is a nut in threaded connection with the outer wall of the tail end of the power output end of the rotating shaft.

Furthermore, the outer wall of the convex ring is relatively provided with a wrench position, the outer wall of the rotating shaft at one end of the convex ring far away from the grinding part is integrally formed with a waterproof disc, and the end face of the waterproof disc close to the non-output end is provided with a labyrinth groove.

Furthermore, a plug head is detachably arranged in the through hole at the tail end of the power output end of the rotating shaft, and a rotary joint is detachably arranged at the tail end of the non-power output end of the rotating shaft.

Further, the plug is a bolt in threaded connection with a through hole at the tail end of the power output end of the rotating shaft.

The invention has the beneficial effects that: the rotating shaft is designed to be hollow, so that liquid can pass through the rotating shaft, the liquid enters the rotating shaft from the rotating joint and then flows to the other end of the rotating shaft, and then is sprayed out of the first liquid through hole and the second liquid through hole to a grinding wheel and a workpiece for grinding; the liquid can cool the motor, so that overheating damage is avoided; the liquid can also take away a large amount of grinding heat, reduce the temperature in the grinding area, improve cutting speed and grinding quality, reduce dust, and prolong the service life of the grinding wheel.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a perspective view of another angle of the present invention;

FIG. 3 is a schematic plan view of the present invention;

FIG. 4 is a schematic partial split structure of the present invention;

FIG. 5 is a schematic view of the construction of the spindle of the present invention;

FIG. 6 is a perspective view of the grinding wheel of the present invention;

FIG. 7 is a schematic illustration of a disassembled structure of the grinding wheel of the present invention;

FIG. 8 is a schematic cross-sectional view of the grinding wheel of the present invention;

fig. 9 is a schematic cross-sectional view taken at a-a in fig. 8.

Detailed Description

Referring to fig. 1-9, an electric grinding mechanism comprises a motor 1, wherein the motor 1 comprises a shell 2, a front end cover 3 and a rear end cover 4 which are arranged at the front end and the rear end of the shell 2, a wire box 5 arranged on the outer wall of the top of the shell 2, a stator arranged in the shell 2, a coil assembly arranged on the stator, a rotor arranged in the stator, a rotating shaft 6 arranged in the rotor, the rotor driving the rotating shaft 6 to rotate, and the rotating shaft 6 driving a grinding part 7 to rotate and carrying out processing treatments such as grinding or cutting on the surface of a workpiece 8.

The main structure and the working principle of the motor 1 are the same as those of the existing motor, and the difference is as follows: the rotating shaft 6 of the traditional motor 1 is solid, the rotating shaft 6 of the motor 1 is axially hollow, a through hole of the rotating shaft axially penetrates through the whole rotating shaft 6, so that water, grinding fluid and other liquid can enter from one end and then flow out from the other end, heat generated by the motor 1 can be taken away through liquid flow, and the motor 1 is cooled; the liquid can also be sprayed on the grinding part 7 and the workpiece 8 in the process of machining, a large amount of grinding heat is taken away, the temperature of a grinding area is reduced, the cutting speed and the grinding quality are improved, the cutting force is reduced, dust is reduced, and the service life of the grinding part 7 is prolonged.

The outer wall of the power output end of a rotating shaft 6 is provided with a grinding part 7, the wall of the power output end of the rotating shaft 6 and the grinding part 7 are correspondingly provided with a plurality of first liquid through holes 9 and second liquid through holes 10 which are mutually communicated, the second liquid through holes 10 are communicated with an inner cavity 12 of the rotating shaft 6 through the correspondingly arranged first liquid through holes 9, and the inner cavity 12 is a circular through hole which axially penetrates through the whole rotating shaft 6; a rotary joint 11 is detachably arranged at the tail end of the non-power output end of the rotating shaft 6 and is used for being connected with the liquid supply device, and when the rotating shaft 6 rotates, the main body of the rotary joint 11 does not rotate along with the rotation; liquid enters an inner cavity 12 of the rotating shaft 6 through the rotating joint 11, and then the liquid is sprayed out from the second liquid through hole 10 through the first liquid through hole 9; in order to reduce the liquid loss and save the cost, the aperture of the first liquid through hole 9 and the aperture of the second liquid through hole 10 can be reduced or the pressure of the liquid inflow end can be controlled.

The grinding part 7 is preferably a grinding wheel, an inner hole of the grinding wheel is sleeved on the outer wall of the power output end of the rotating shaft 6, and the second liquid through hole 10 extends from the inner hole to the outer wall of the grinding wheel; the outer wall of one end of the grinding wheel is tightly attached to a stopping part 13 on the outer wall of the power output end of the rotating shaft 6, and the stopping part 13 is used for limiting the axial movement of the grinding wheel; a locking piece 14 is detachably mounted on the outer wall of the tail end of the power output end of the rotating shaft 6, so that the grinding wheel is fixed on the rotating shaft 6. Preferably: the stopping part 13 is a convex ring integrally formed on the outer wall of the power output end of the rotating shaft 6, the locking piece 14 is a nut in threaded connection with the outer wall of the tail end of the power output end of the rotating shaft 6, and after the nut is detached, the grinding wheel can be taken down, so that the grinding wheel is convenient to replace.

The grinding wheel comprises a base body 15 and a grinding ring 16 sintered on the outer wall of the base body 15, different materials can be selected to manufacture the base body 15 and the grinding ring 16 respectively according to needs by adopting the structure, the materials are flexible, the production cost is saved, an annular groove 17 is formed in the outer wall of the grinding ring 16, the grinding wheel is conveniently attached to and matched with the outer surface of a workpiece 8, the outer surface of the workpiece 8 is conveniently machined, or grinding surfaces in various shapes are designed, and the grinding wheel is used for machining workpieces in different shapes.

A plug 18 is detachably mounted in the through hole at the tail end of the power output end of the rotating shaft 6, and the plug 18 is preferably a bolt in threaded connection with the through hole at the tail end of the power output end of the rotating shaft 6; the plug head 18 can be detached, then pressure liquid is input from the end of the rotary joint 11, and the inner cavity 12 of the rotary shaft 6 is large in aperture, so that the liquid can be discharged from the inner cavity 12 of the rotary shaft 6, impurities in the inner cavity 12 of the rotary shaft 6 can be removed, the plug head 18 can also be detached, the liquid can be axially discharged during grinding, and different grinding requirements can be met.

Four wrench positions 19 which are plane notches are symmetrically arranged on the outer wall of the convex ring, and are clamped on the wrench positions 19 by using wrenches to prevent the rotating shaft 6 from rotating when the nut is disassembled and assembled; integrated into one piece has waterproof disc 20 on the pivot 6 outer wall of the one end of emery wheel is kept away from to the bulge loop, be provided with the labyrinth groove on the terminal surface of the nearly non-output end of waterproof disc, waterproof disc 20 sets up perpendicularly on the outer wall of pivot 6, for traditional pivot 6, add waterproof disc 20 and can prevent liquid splash-in, in order to strengthen water-proof effects, can also be at the junction of pivot 6 and front end housing 3 to and the waterproof gum cover 21 of front end housing 3 and casing 2 junction installation.

The present invention is not limited to the above-described embodiments, and modifications and variations of the present invention are possible within the scope of the claims.

Claims

1. An electric grinding mechanism comprises an electric motor, and is characterized in that: the rotating shaft of the motor is hollow and is used for liquid to pass through; the grinding part is installed on the outer wall of the power output end of the rotating shaft, at least one first liquid through hole is formed in the wall of the power output end of the rotating shaft, at least one second liquid through hole is formed in the grinding part, the first liquid through hole and the second liquid through hole are correspondingly arranged and can be communicated with each other, and the first liquid through hole is communicated with the inner cavity of the rotating shaft.

2. The electric grinding mechanism of claim 1, wherein: the grinding part is a grinding wheel, an inner hole of the grinding wheel is sleeved on the outer wall of the power output end of the rotating shaft, and the second liquid through hole extends to the outer wall of the grinding wheel from the inner hole.

3. The electric grinding mechanism of claim 2, wherein: the grinding wheel includes a base and an abrasive ring integrally formed on an outer wall of the base.

4. A powered grinding mechanism according to any of claims 1 to 3 wherein: the outer wall of the power output end of the rotating shaft is provided with a stopping part for limiting the axial movement of the grinding part, and the outer wall of the tail end of the power output end of the rotating shaft is detachably provided with a locking piece, so that the grinding part is fixed on the rotating shaft.

5. The electric grinding mechanism of claim 4, wherein: the stopping part is a convex ring which is integrally formed on the outer wall of the power output end of the rotating shaft, and the locking piece is a nut which is in threaded connection with the outer wall of the tail end of the power output end of the rotating shaft.

6. The electric grinding mechanism of claim 5, wherein: the outer wall of the convex ring is relatively provided with a wrench position, the outer wall of the rotating shaft at one end of the convex ring far away from the grinding part is integrally formed with a waterproof disc, and the end face of the waterproof disc close to the non-output end is provided with a labyrinth groove.

7. A powered grinding mechanism according to any of claims 1 to 3 wherein: the plug head is detachably arranged in the through hole at the tail end of the power output end of the rotating shaft, and the rotary joint is detachably arranged at the tail end of the non-power output end of the rotating shaft.

8. The electric grinding mechanism of claim 7, wherein: the plug is a bolt in threaded connection with a through hole at the tail end of the power output end of the rotating shaft.