CN210587204U

CN210587204U - High-performance electric spindle with dustproof structure

Info

Publication number: CN210587204U
Application number: CN201921699379.4U
Authority: CN
Inventors: 舒聪
Original assignee: Shenzhen Kairuite Precision Machinery Co Ltd
Current assignee: Shenzhen Kairuite Precision Machinery Co Ltd
Priority date: 2019-10-11
Filing date: 2019-10-11
Publication date: 2020-05-22
Anticipated expiration: 2029-10-11

Abstract

The utility model discloses a high performance electricity main shaft with dustproof construction relates to electricity main shaft technical field. The high-performance electric spindle with the dustproof structure comprises a shell, wherein a cooling sleeve is sleeved on the inner wall of the shell, a motor stator is sleeved on the inner wall of the cooling sleeve, a motor rotor is arranged in the motor stator, a central shaft is sleeved on the inner wall of the motor rotor, a rear bearing sleeve and a front bearing sleeve are respectively fixed on two sides of the shell through bolts, the inner walls of the rear bearing sleeve and the front bearing sleeve are respectively sleeved with a bearing seat, the inner wall of each bearing seat is sleeved with a bearing, the outer wall of one side of each of the two bearing seats, which is far away from the bearing seat, is respectively fixed with a rear end cover and a front end cover through bolts, the outer wall of the central shaft, which is close to the front end cover, is provided with a boss, the outer wall of the boss is fixed with a, the center pin is close to front end housing department outer wall and is equipped with the boss, the utility model discloses inside electric main shaft effectively avoided the dust to enter electric main shaft, compare traditional electric main shaft, the utility model discloses a dustproof effect is promoted greatly.

Description

High-performance electric spindle with dustproof structure

Technical Field

The utility model relates to an electricity main shaft technical field specifically is a high performance electricity main shaft with dustproof construction.

Background

The electric spindle is a new technology which integrates a machine tool spindle and a spindle motor into a whole and appears in the field of numerical control machines in recent years. The main transmission system of the high-speed numerical control machine tool cancels belt wheel transmission and gear transmission. The main shaft of the machine tool is directly driven by the built-in motor, so that the length of a main transmission chain of the machine tool is shortened to zero, and zero transmission of the machine tool is realized. The transmission structure form of the spindle motor and the machine tool spindle which are combined into a whole enables the spindle part to be relatively independent from the transmission system and the whole structure of the machine tool, so that the spindle unit can be manufactured.

General lug connection tool bit or cutter of electricity main shaft's output, tool bit or cutter are direct to mill the section bar, can produce some powder and dust at milling the in-process, because electricity main shaft is nearer with the cutter distance, inside many dusts can directly get into electricity main shaft along electricity main shaft's output shaft, and then cause the damage to electricity main shaft, reduce its life, current electricity main shaft dustproof machanism is comparatively simple, most model electricity main shaft only adopts simple dustproof sealing ring to prevent dust, it is dustproof relatively poor to effect.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high performance electricity main shaft with dustproof construction to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a high-performance electric spindle with a dustproof structure comprises a shell, wherein a cooling jacket is sleeved on the inner wall of the shell, a motor stator is sleeved on the inner wall of the cooling jacket, a motor rotor is arranged inside the motor stator, a central shaft is sleeved on the inner wall of the motor rotor, a rear bearing sleeve and a front bearing sleeve are respectively fixed on two sides of the shell through bolts, bearing seats are respectively sleeved on the inner walls of the rear bearing sleeve and the front bearing sleeve, bearings are sleeved on the inner walls of the bearing seats, two bearing seats are fixed on the outer wall of one side, which is far away from the bearing seat, of the bearing seat, a rear end cover and a front end cover are respectively fixed through bolts, a boss is arranged on the outer wall of the central shaft, which is close to the front end cover, and a dustproof cap is fixed on the outer wall of the boss through bolts, a cap edge which is concentrically and annularly distributed is arranged on, the outer wall of one side of the front bearing sleeve is provided with an air inlet pipe, the air inlet pipe is externally connected with an air pump, so that high pressure is formed inside the electric spindle, and dust is prevented from entering the electric spindle.

Preferably, the cooling jacket is internally provided with an oil channel which is distributed spirally, the two ends of the cooling jacket are respectively provided with a liquid inlet pipe and a liquid outlet pipe which are communicated with the oil channel, the outer walls of the front bearing sleeve and the rear bearing sleeve are respectively provided with pipe through holes which are matched with the liquid inlet pipe and the liquid outlet pipe, and the liquid inlet pipe and the liquid outlet pipe are respectively arranged on the two sides, so that the cooling oil pump is convenient to install.

Preferably, the outer wall of one side of the cooling jacket is provided with a convex ring, one side of the inner wall, close to the front bearing sleeve, of the shell is provided with a groove, the convex ring is fixed on the inner wall of the groove through a bolt, the outer wall of the cooling jacket is provided with a limit convex strip, and the inner wall of the shell is provided with a clamping groove matched with the limit convex strip.

Preferably, the outer walls of the two sides of the central shaft are respectively connected with the inner walls of the two bearings, and a mounting hole is formed in the center of the outer wall of one side of the central shaft, which is close to the front bearing sleeve.

Preferably, a circular hole is formed in the center of the front end cover, the central shaft is located in the circular hole, and the rear end cover is of a closed structure.

Preferably, gaps are reserved between the two sides of the motor stator and the motor rotor and between the rear bearing sleeve and the front bearing sleeve.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model provides a high performance electricity main shaft with dustproof construction, dustproof cap snap-on is on the center pin, when the center pin rotates, dustproof cap rotates thereupon together, there is not the clearance between dustproof cap and the center pin, and then avoid inside the dust gets into electricity main shaft, setting through a plurality of cap edges, make dustproof cap and front end housing junction form many bending channels, extension dust access passage, in addition, electricity main shaft during operation, go into the air and maintain electricity main shaft internal pressure in 1.5-2bar interval to the inside pump of electricity main shaft through external air pump, make cutter cutting end atmospheric pressure relative to the inside negative pressure state that forms of electricity main shaft, effectively avoid inside the dust gets into electricity main shaft, compare traditional electricity main shaft, the utility model discloses a dustproof effect obtains promoting greatly.

(2) The utility model provides a high performance electricity main shaft with dustproof construction, the both sides of cooling jacket are located to the feed liquor pipe and the drain pipe branch of cooling jacket, provide more spaces for the installation of cooling pump, and the cooling jacket passes through bulge loop and bolt snap-on the shell, and stability is strong, avoids using the condition that the offset appears after the longer time.

Drawings

Fig. 1 is a schematic diagram of a half-section structure of the present invention;

FIG. 2 is a schematic view of the cooling jacket of the present invention;

fig. 3 is a schematic half-sectional view of the dust cap of the present invention.

In the figure: the device comprises a shell 1, a cooling jacket 2, a motor stator 3, a motor rotor 4, a central shaft 5, a rear bearing bush 6, a rear end cover 7, a front bearing bush 8, a front end cover 9, a bearing seat 10, a bearing 11, a dust-proof cap 12, a cap edge 13, a sealing ring 14, an air inlet pipe 15, a mounting hole 16, a convex ring 17, a liquid inlet pipe 18, a liquid outlet pipe 19 and a limiting convex strip 20.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a high-performance electric spindle with a dustproof structure comprises a shell 1, wherein a cooling jacket 2 is sleeved on the inner wall of the shell 1, a motor stator 3 is sleeved on the inner wall of the cooling jacket 2, an external controller and a power supply are connected with the motor stator 3, a motor rotor 4 is arranged inside the motor stator 3, a central shaft 5 is sleeved on the inner wall of the motor rotor 4, a rear bearing sleeve 6 and a front bearing sleeve 8 are respectively fixed on two sides of the shell 1 through bolts, bearing seats 10 are respectively sleeved on the inner walls of the rear bearing sleeve 6 and the front bearing sleeve 8, bearings 11 are sleeved on the inner walls of the bearing seats 10, a rear end cover 7 and a front end cover 9 are respectively fixed on the outer walls of two bearing seats 10 far away from one side through bolts, a boss is arranged on the outer wall of the position, close to the front end cover 9, of the center shaft 5 is fixed with a dustproof cap 12 through bolts, a cap edge, the cap edge 13 is limited in the annular groove, the inner wall of the dustproof cap 12 is sleeved with a sealing ring 14, the outer wall of one side of the front bearing sleeve 8 is provided with an air inlet pipe 15, the air inlet pipe 15 is externally connected with an air pump, the cooling sleeve 2 is internally provided with an oil passage distributed in a spiral shape, the two ends of the cooling sleeve 2 are respectively provided with a liquid inlet pipe 18 and a liquid outlet pipe 19 communicated with the oil passages, the liquid inlet pipe 18 and the liquid outlet pipe 19 are externally connected with a circulating oil pump, the outer walls of the front bearing sleeve 8 and the rear bearing sleeve 6 are respectively provided with a pipe perforation matched with the liquid inlet pipe 18 and the liquid outlet pipe 19, the outer wall of one side of the cooling sleeve 2 is provided with a convex ring 17, the inner wall of one side of the shell 1 close to the front bearing sleeve 8 is provided with a groove, the convex ring 17 is fixed on the inner wall of the groove through bolts, the outer wall of the cooling sleeve 2 is provided with a limiting, the center of the front end cover 9 is provided with a round hole, the central shaft 5 is positioned in the round hole, the rear end cover 7 is of a closed structure, and gaps are reserved between the two sides of the motor stator 3 and the motor rotor 4 and between the rear bearing sleeve 6 and the front bearing sleeve 8.

The working principle is as follows: an air pump is externally connected to an air inlet pipe 15, a circulating oil pump is externally connected to a liquid inlet pipe 18 and a liquid outlet pipe 19, a cutter is installed in an installation hole 16 on one side of a central shaft 5, when the electric spindle works, cut powder or dust can be effectively blocked by a dust cap 12, the dust cap 12 is directly fixed on the central shaft 5, when the central shaft 5 rotates, the dust cap 12 rotates along with the central shaft, no gap exists between the dust cap 12 and the central shaft 5, and further, the dust is prevented from entering the inside of the electric spindle, a multi-fold bent channel is formed at the joint of the dust cap 12 and a front end cover 9 through the arrangement of a plurality of cap edges 13, the dust entering channel is prolonged, in addition, when the electric spindle works, air is pumped into the electric spindle through the external air pump, the internal pressure intensity of the electric spindle is maintained within a range of 1.5-2bar, the air pressure of a cutting end of, compare traditional electricity main shaft, the utility model discloses a dustproof effect is promoted greatly, and in addition, the both sides of cooling jacket 2 are located to the feed liquor pipe 18 and the drain pipe 19 branch of cooling jacket 2, provide more spaces for the installation of cooling pump, and cooling jacket 2 passes through bulge loop 17 and bolt snap-on shell 1, and stability is strong, avoids using the condition that the skew appears after the longer time.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A high performance electricity main shaft with dustproof construction, includes shell (1), its characterized in that: the motor is characterized in that a cooling sleeve (2) is sleeved on the inner wall of a shell (1), a motor stator (3) is sleeved on the inner wall of the cooling sleeve (2), a motor rotor (4) is arranged inside the motor stator (3), a central shaft (5) is sleeved on the inner wall of the motor rotor (4), a rear bearing sleeve (6) and a front bearing sleeve (8) are respectively fixed on two sides of the shell (1) through bolts, bearing seats (10) are respectively sleeved on the inner walls of the rear bearing sleeve (6) and the front bearing sleeve (8), bearings (11) are sleeved on the inner walls of the bearing seats (10), two bearing seats (10) are arranged to be far away from the outer wall of one side and are respectively fixed with a rear end cover (7) and a front end cover (9) through bolts, a boss is arranged on the outer wall of the position, close to the front end cover (9), of the central shaft (5), a dustproof cap (12) is, the outer wall of one side of the front end cover (9) is provided with an annular groove matched with the brim (13), the brim (13) is limited in the annular groove, the inner wall of the dustproof cap (12) is sleeved with a sealing ring (14), and the outer wall of one side of the front bearing sleeve (8) is provided with an air inlet pipe (15).

2. The high-performance electric spindle with the dustproof structure according to claim 1, wherein: an oil channel distributed in a spiral shape is formed in the cooling sleeve (2), a liquid inlet pipe (18) and a liquid outlet pipe (19) communicated with the oil channel are arranged at the two ends of the cooling sleeve (2) respectively, and pipe through holes matched with the liquid inlet pipe (18) and the liquid outlet pipe (19) are formed in the outer walls of the front bearing sleeve (8) and the rear bearing sleeve (6) respectively.

3. The high-performance electric spindle with the dustproof structure according to claim 1, wherein: cooling jacket (2) one side outer wall is equipped with bulge loop (17), one side inner wall that shell (1) is close to front bearing housing (8) is equipped with the recess, bulge loop (17) are fixed in the recess inner wall through the bolt, cooling jacket (2) outer wall is equipped with spacing sand grip (20), shell (1) inner wall is equipped with the draw-in groove in spacing sand grip (20) looks adaptation.

4. The high-performance electric spindle with the dustproof structure according to claim 1, wherein: the outer walls of two sides of the central shaft (5) are respectively connected with the inner walls of the two bearings (11), and a mounting hole (16) is formed in the center of the outer wall of one side of the central shaft (5) close to the front bearing sleeve (8).

5. The high-performance electric spindle with the dustproof structure according to claim 1, wherein: the center of the front end cover (9) is provided with a round hole, the central shaft (5) is positioned in the round hole, and the rear end cover (7) is of a closed structure.

6. The high-performance electric spindle with the dustproof structure according to claim 1, wherein: gaps are reserved between the two sides of the motor stator (3) and the motor rotor (4) and between the rear bearing sleeve (6) and the front bearing sleeve (8).