CN203817410U

CN203817410U - High-speed motorized spindle

Info

Publication number: CN203817410U
Application number: CN201420011155.0U
Authority: CN
Inventors: 曹锋
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-01-08
Filing date: 2014-01-08
Publication date: 2014-09-10
Anticipated expiration: 2024-01-08

Abstract

The utility model relates to a high-speed motorized spindle, which comprises a case, wherein a rotating shaft and a stator are arranged in the case, a front and a rear end covers are respectively fixed on the two ends of the case, an axial center hole is arranged in the rotating shaft, a radial air hole which is communicated with the axial center hole is arranged on the rotating shaft which is arranged on the left end of the axial center hole, the front end cover is provided with a plurality of air outlet channels which are communicated with an inner cavity of the case, a protective cover is arranged on a left cover of a front flywheel cap, and spray holes which are communicated with the air outlet channels are arranged on the side wall of the protective cover. The axial center hole and the radial air hole are arranged on the rotating shaft of the high-speed motorized spindle, inner air of the axial center hole enters the case from the radial air hole, then is sprayed from the spray holes, and external impurities and liquid can not be scoured into a main spindle, thereby protecting a bearing of the main spindle and electrical parts from being damaged, and effectively solving the seal problem of the high-speed motorized spindle.

Description

A kind of high-speed electric main shaft

Technical field

The utility model relates to a kind of high-speed electric main shaft.

Background technology

Current electric main shaft and all kinds of mechanical main shaft are under High Rotation Speed, its inner negative pressure that produces, outside dust and cutting can be washed away to liquid suction main shaft inside, thereby cause main shaft bearing damage and main shaft electric part to break down, and under electric main shaft High Rotation Speed, can not provide again effective sealing to stop that outside impurity enters main shaft inside, therefore cause greatly shorten its service life.

Utility model content

For solving the problems of the technologies described above, the utility model provides a kind of high-speed electric main shaft simple in structure, easy to use.

High-speed electric main shaft of the present utility model, comprise casing, the inside of described casing is provided with rotating shaft and stator, the two ends of casing are fixedly drive end bearing bracket and rear end cap respectively, the two ends of rotating shaft are fixing front flywheel cap and rear and cap respectively, the inside of rotating shaft is provided with axial center hole, in the rotating shaft of axial center hole left end, have the radially pore being communicated with axial center hole, on described drive end bearing bracket, have some air-out passages that are communicated with casing internal cavities, the left cap of front flywheel the cap protecting cover of setting up defences, has the spray orifice being communicated with air-out passage on the sidewall of protective cover.

High-speed electric main shaft of the present utility model, has the air inlet being communicated with axial center hole on the right side of described rear end cap.

Compared with prior art the beneficial effects of the utility model are: high-speed electric main shaft reasonable in design of the present utility model, in rotating shaft, offer axial center hole and pore radially, on drive end bearing bracket, have some air-out passages that are communicated with casing internal cavities simultaneously, rotating shaft is under High Rotation Speed, produce centrifugal force and get rid of gas, axial center hole inner air enters casing by pore radially, then the air of casing inside is sprayed by spray orifice, the impurity of casing outside and liquid wash away less than the inside of main shaft and go, thereby bearing and the electric part of protection main shaft are not damaged, effectively solved the sealing problem of high-speed main spindle, greatly extended the service life that main shaft is worked under adverse circumstances.

Accompanying drawing explanation

Fig. 1 is the structural representation of a kind of high-speed electric main shaft described in the utility model embodiment.

In figure:

1, casing; 2, rotating shaft; 3, stator; 4, drive end bearing bracket; 5, rear end cap; 6, front flywheel cap; 7, rear and cap; 8, axial center hole; 9, pore radially; 10, air-out passage; 11, protective cover; 12, spray orifice.

The specific embodiment

Below in conjunction with drawings and Examples, the specific embodiment of the present utility model is described in further detail.Following examples are used for illustrating the utility model, but are not used for limiting scope of the present utility model.

As shown in Figure 1, a kind of high-speed electric main shaft, comprise casing 1, the inside of described casing 1 is provided with rotating shaft 2 and stator 3, the two ends of casing 1 are fixedly drive end bearing bracket 4 and rear end cap 5 respectively, the two ends of rotating shaft 2 are fixing front flywheel cap 6 and rear and cap 7 respectively, the inside of rotating shaft 2 is provided with axial center hole 8, in the rotating shaft 2 of axial center hole 8 left ends, have the radially pore 9 being communicated with axial center hole 8, on described drive end bearing bracket 4, have some air-out passages 10 that are communicated with casing 1 internal cavities, the left cap of front flywheel cap 6 protecting cover 11 of setting up defences, on the sidewall of protective cover 11, have the spray orifice 12 being communicated with air-out passage 10.

High-speed electric main shaft of the present utility model, has the air inlet being communicated with axial center hole 8 on the right side of described rear end cap 5.

High-speed electric main shaft reasonable in design of the present utility model, in rotating shaft, offer axial center hole and pore radially, on drive end bearing bracket, have some air-out passages that are communicated with casing internal cavities simultaneously, rotating shaft is under High Rotation Speed, produce centrifugal force and get rid of gas, axial center hole inner air enters casing by pore radially, then first the air of casing inside enters air-out passage, grinding ash and profit by casing inside sprayed by spray orifice afterwards, concrete principle is that casing inner air sprays outward, the impurity of casing outside and liquid wash away less than the inside of main shaft and go, thereby bearing and the electric part of protection main shaft are not damaged, because if gaseous blast outward from the inside not, main shaft is when High Rotation Speed, inner meeting produces negative pressure, from casing outside, can suck impurity and liquid, effectively solved the sealing problem of high-speed main spindle, greatly extended the service life that main shaft is worked under adverse circumstances.

The above is only preferred embodiment of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model know-why; can also make some improvement and modification, these improve and modification also should be considered as protection domain of the present utility model.

Claims

1. a high-speed electric main shaft, comprise casing (1), the inside of described casing (1) is provided with rotating shaft (2) and stator (3), the two ends of casing (1) are fixedly drive end bearing bracket (4) and rear end cap (5) respectively, the two ends of rotating shaft (2) are fixing front flywheel cap (6) and rear and cap (7) respectively, it is characterized in that: the inside of described rotating shaft (2) is provided with axial center hole (8), in the rotating shaft (2) of axial center hole (8) left end, have the radially pore (9) being communicated with axial center hole (8), on described drive end bearing bracket (4), have some air-out passages (10) that are communicated with casing (1) internal cavities, the left cap of front flywheel cap (6) protecting cover (11) of setting up defences, on the sidewall of protective cover (11), have the spray orifice (12) being communicated with air-out passage (10), on the right side of described rear end cap (5), have the air inlet being communicated with axial center hole (8).