CN208613763U - The electro spindle of numerically-controlled machine tool - Google Patents

Abstract

The utility model discloses a kind of electro spindles of numerically-controlled machine tool, including main shaft, motor stator, p-m rotor and positioning device, p-m rotor is set on the outside of the middle part of main shaft, motor stator is set on the outside of p-m rotor, positioning device is set on the outside of main shaft, and be correspondingly arranged with motor stator, p-m rotor, one end of main shaft is used for chuck for installing.By being directly arranged p-m rotor and motor stator on the outside of main shaft, so that main axis is directly driven, so that main shaft drives the chuck of one end to rotate when motor stator and p-m rotor interact.The electro spindle of the numerically-controlled machine tool directly passes through motor stator and p-m rotor drives main axis, without external motor again, enormously simplify the drive connection structure of main shaft, simultaneously, main axis is directly driven by the rotation of p-m rotor, the control that main axis precision can be improved avoids drive mechanism bring trueness error, to be conducive to the control of Workpiece Machining Accuracy.

Description

The electro spindle of numerically-controlled machine tool

Technical field

The utility model belongs to a kind of important component of complex milling machine tool, more particularly, to a kind of numerically-controlled machine tool Electro spindle.

Background technique

The workpiece of lathe or milling machine needs for workpiece to be processed to be fixed on chuck in clamping, and chuck, which is fixed on, to be turned On axis, shaft drives chuck together with workpiece common rotation.Existing shaft is the output axis connection by belt pulley and motor, i.e., Shaft is driven to rotate again by drive mechanism by motor.Class formation occupancy volume is larger, during installation, needs on lathe Reserve biggish space installation；Noise is larger when transmission；And shaft rotational angle control precision is lower when in use, to influence The processing quality of workpiece.

Utility model content

The purpose of this utility model is to provide a kind of numerically-controlled machine tools for being able to solve at least one of above problem Electro spindle.

One aspect according to the present utility model, provides a kind of electro spindle of numerically-controlled machine tool, including main shaft, main shaft are fixed Son, p-m rotor and positioning device, p-m rotor are set on the outside of the middle part of main shaft, and motor stator is set in outside p-m rotor Side, positioning device is set on the outside of main shaft, and is correspondingly arranged with motor stator, p-m rotor, and one end of main shaft is used for installation card Disk.

The beneficial effects of the utility model are: by being directly arranged p-m rotor and motor stator on the outside of main shaft, thus When so that motor stator and p-m rotor interacting, main axis is directly driven, so that main shaft drives the chuck of one end Rotation.It follows that the electro spindle of the numerically-controlled machine tool of the utility model directly passes through motor stator and p-m rotor drives main shaft Rotation, without external motor again, enormously simplifies the drive connection structure of main shaft, meanwhile, it is straight by the rotation of p-m rotor Tape splicing moves main axis, and the control of main axis precision can be improved, and drive mechanism bring trueness error is avoided, to have Conducive to the control of Workpiece Machining Accuracy.

In some embodiments, positioning device includes first bearing, second bearing, first bearing seat and second bearing Seat, first bearing and second bearing are set on main shaft, and are located at the both ends of p-m rotor, and first bearing seat is set in On the outside of first bearing, second bearing seat is set on the outside of second bearing, and the end face of first bearing seat, the end face of second bearing seat are divided It is not abutted against with the both ends of motor stator.As a result, by positioning device, the fixation to motor stator position may be implemented, meanwhile, Equipped with first bearing and second bearing, main shaft can be reduced in rotation and the abrasion of other component, that improves main shaft uses the longevity Life.

In some embodiments, positioning device further includes bearing gland, and bearing gland is two, respectively first bearing and Second bearing abuts against.It is equipped with bearing gland as a result, can be convenient the fixation to two corresponding installing positions of bearings.

In some embodiments, the other end of main shaft is arranged with locking nut, and locking nut is corresponding with bearing gland to be set It sets, and the two abuts against.It is equipped with locking nut corresponding with second bearing as a result, it is right therewith to can be convenient locking nut fixation The position for the bearing gland answered, and facilitate adjusting tightness.

In some embodiments, main shaft outer sheath is equipped with oil cylinder terminal pad, and oil cylinder terminal pad is located at the one of locking nut End.Being equipped with oil cylinder terminal pad as a result, can be convenient being connected and fixed for oil cylinder and main shaft, and structure is simple.

In some embodiments, the electro spindle of numerically-controlled machine tool further includes waterproof ring and waterproof cover, waterproof ring and wherein one A bearing gland matches, and corresponding with first bearing, and waterproof cover is set between another bearing gland and second bearing.By This, being equipped with waterproof ring and waterproof cover it is possible to prevente effectively from outside water enters between bearing and main shaft ensure that the use of main shaft Service life.

In some embodiments, the electro spindle of numerically-controlled machine tool further includes positioning ring, and the positioning ring is set in outside main shaft The end face of side, positioning ring and p-m rotor abuts against.It is equipped with positioning ring as a result, can be convenient p-m rotor position on main shaft Restriction.

Detailed description of the invention

Fig. 1 is the schematic cross-sectional view of the electro spindle of the numerically-controlled machine tool of the utility model.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawing.

Referring to Fig.1.The electro spindle of numerically-controlled machine tool, including main shaft 1, motor stator 2, p-m rotor 3 and positioning device 4, forever Magnet rotor 3 is set on the outside of the middle part of main shaft 1, and motor stator 2 is set in 3 outside of p-m rotor, and positioning device 4 is set in main shaft 1 outside, and be correspondingly arranged with motor stator 2, p-m rotor 3, one end of main shaft 1 is used for chuck for installing.

When the electro spindle work of the numerically-controlled machine tool, after connecting electricity, under motor stator 2 and the interaction of p-m rotor 3, permanent magnetism Rotor 3 drives main shaft 1 to rotate, and the chuck rotation of 1 one end of main shaft is fixedly mounted on, consequently facilitating rotating when work pieces process.Thus It is found that the main shaft 1 is not necessarily to external motor and transmission connecting structure, overall structure is simplified, reduces overall cost, and facilitate master 1 rotational angle of axis accurately controls.

Positioning device 4 includes first bearing 41, second bearing 42, first bearing seat 43 and second bearing seat 44, first axle Hold 41 and second bearing 42 be set on main shaft 1, and be located at the both ends of p-m rotor 3, first bearing seat 43 is set in 41 outside of first bearing, second bearing seat 44 are set in 42 outside of second bearing, the end face of first bearing seat 43, second bearing seat Both ends of 44 end face respectively with motor stator 2 abut against.By being equipped with first bearing 41 and second bearing 42, master can be reduced Axis 1 rotation when and other component abrasion, improve the service life of main shaft.

Positioning device 4 further includes bearing gland 45, and bearing gland 45 is two, respectively first bearing 41 and second bearing 42 It abuts against.It can be matched as a result, with corresponding bearing by bearing gland 45, facilitate fixation of the corresponding bearing on main shaft 1.

The other end of main shaft 1 is arranged with locking nut 5, and locking nut 5 is correspondingly arranged with bearing gland 45, and the two offsets It connects；Wherein, locking nut 5 is located at 42 place side of second bearing.Locking nut 5 and main shaft 1 are by being threadedly engaged fixation；It is installing When, by tightening locking nut 5, bearing gland 45 and corresponding bearing can be compressed.

1 outer sheath of main shaft is equipped with oil cylinder terminal pad 6, and oil cylinder terminal pad 6 is located at one end of locking nut 5.In order to facilitate oil The fixation of cylinder terminal pad 6 is arranged with axis tail locking nut 10 in the edge of 1 other end of main shaft, and axis tail locking nut 10 passes through Screw thread and main shaft 1 are fixed, and axis tail locking nut 10 is close to oil cylinder terminal pad 6.It is external by can be convenient equipped with oil cylinder terminal pad 6 The fixation of oil cylinder simplifies overall structure.

The electro spindle of numerically-controlled machine tool further includes waterproof ring 7 and waterproof cover 8, waterproof ring 7 and one of 45 phase of bearing gland Cooperation, and it is corresponding with first bearing 41, and waterproof cover 8 is set between another bearing gland 45 and second bearing 42.Wherein, prevent Water ring 7 can prevent external cooling water etc. from entering in first bearing 41, ensure that the use longevity of main shaft 1 and first bearing 41 Life；Waterproof cover 8 can prevent external cooling water etc. from entering in second bearing 42, ensure that making for main shaft 1 and second bearing 42 Use the service life.

The electro spindle of numerically-controlled machine tool further includes positioning ring 9, and positioning ring 9 is set on the outside of main shaft, positioning ring 9 and p-m rotor 3 end face abuts against.Positioning ring 9 is between p-m rotor 3 and first bearing 41,9 one side end face of positioning ring and p-m rotor 3 End face be close to, thus the convenient restriction to 3 installation site of p-m rotor.

Main shaft 1 in the electro spindle of the numerically-controlled machine tool of the utility model is not necessarily to through the external transmission mechanisms such as belt pulley and electricity Machine connection, facilitates the control to 1 rotational angle of main shaft, improves the precision of 1 rotational angle of main shaft；And each component peace on main shaft 1 Assembling structure is compact, facilitates the installation of other component, simplifies overall structure.

Above-described is only preferred embodiments of the present invention, it is noted that for the ordinary skill of this field For personnel, without departing from the concept of the present invention, various modifications and improvements can be made, these all belong to In the protection scope of the utility model.

Claims (7)

1. the electro spindle of numerically-controlled machine tool, which is characterized in that including main shaft (1), motor stator (2), p-m rotor (3) and positioning dress It sets (4), the p-m rotor (3) is set on the outside of the middle part of main shaft (1), and the motor stator (2) is set in p-m rotor (3) Outside, the positioning device (4) is set on the outside of main shaft (1), and is correspondingly arranged with motor stator (2), p-m rotor (3), institute One end of main shaft (1) is stated for chuck for installing.

2. the electro spindle of numerically-controlled machine tool according to claim 1, which is characterized in that the positioning device (4) includes first Bearing (41), second bearing (42), first bearing seat (43) and second bearing seat (44), the first bearing (41) and the second axis It holds (42) to be set on main shaft (1), and is located at the both ends of p-m rotor (3), the first bearing seat (43) is set in On the outside of first bearing (41), the second bearing seat (44) is set on the outside of second bearing (42), the first bearing seat (43) End face, second bearing seat (44) both ends of the end face respectively with motor stator (2) abut against.

3. the electro spindle of numerically-controlled machine tool according to claim 2, which is characterized in that the positioning device (4) further includes axis Pressure cap (45), the bearing gland (45) are two, and first bearing (41) and second bearing (42) abut against respectively.

4. the electro spindle of described in any item numerically-controlled machine tools according to claim 1~3, which is characterized in that the main shaft (1) it is another One end is arranged with locking nut (5), and the locking nut (5) is correspondingly arranged with bearing gland (45), and the two abuts against.

5. the electro spindle of numerically-controlled machine tool according to claim 4, which is characterized in that main shaft (1) outer sheath is equipped with oil Cylinder terminal pad (6), the oil cylinder terminal pad (6) are located at one end of locking nut (5).

6. the electro spindle of numerically-controlled machine tool according to claim 3, which is characterized in that further include waterproof ring (7) and waterproof cover (8), the waterproof ring (7) matches with one of bearing gland (45), and, the waterproof corresponding with first bearing (41) (8) are covered to be set between another bearing gland (45) and second bearing (42).

7. the electro spindle of numerically-controlled machine tool according to claim 6, which is characterized in that further include positioning ring (9), the positioning Ring (9) is set on the outside of main shaft, and the positioning ring (9) and the end face of p-m rotor (3) abut against.