CN213857088U - Permanent magnet synchronous electric spindle for horizontal deep hole drilling machine - Google Patents
Permanent magnet synchronous electric spindle for horizontal deep hole drilling machine Download PDFInfo
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- CN213857088U CN213857088U CN202022863700.7U CN202022863700U CN213857088U CN 213857088 U CN213857088 U CN 213857088U CN 202022863700 U CN202022863700 U CN 202022863700U CN 213857088 U CN213857088 U CN 213857088U
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Abstract
The utility model discloses a permanent magnetism synchronization electric main shaft for horizontal deep-hole drilling machine has been designed to the problem that current electric main shaft adopted air heat transfer heat exchange efficiency not enough, include: the main shaft box body is provided with a front flange, a liquid cooling base and a rear flange in sequence on the outer side of the box body, and the rear flange is provided with a locking ring; the spindle is sleeved in the spindle box body, and a rotor seat is arranged at the middle section of the spindle; the gland structure is arranged on the front side of the main shaft box, and the front end of the main shaft is detachably connected with the main shaft box and is matched with the main shaft for working; the stator is arranged in the middle section in the main shaft box body; and the rotor is arranged on the rotor seat and is matched with the stator to work.
Description
Technical Field
The utility model relates to a motor field of making, concretely relates to horizontal deep-hole permanent magnetism synchronization electric main shaft for drilling machine.
Background
With the rapid development of the manufacturing industry, the requirements on the precision and the efficiency of numerical control processing equipment are continuously improved, and in recent years, the traditional motor belt type transmission mode is difficult to meet the processing requirements, so that a unit type permanent magnet synchronous electric spindle is urgently needed. The electric spindle, foreign language name hvct, is a new technology which integrates the spindle of machine tool and the spindle motor into a whole in the field of numerical control machine tools. The spindle is a set of components, which includes the electric spindle itself and its accessories: the device comprises an electric main shaft, a high-frequency conversion device, an oil mist lubricator, a cooling device, a built-in encoder, a tool changing device and the like. The transmission structure form of the Spindle Motor and the machine tool Spindle which are combined into a whole enables Spindle parts to be relatively independent from a transmission system and an integral structure of a machine tool, so that the Spindle unit can be made into a Spindle unit which is commonly called as an electric Spindle (Motor Spindle), and the Spindle unit is characterized by high rotating speed, high precision, low noise and more suitable for spray lubrication of a structure with a locking notch on an inner ring.
The invention discloses an air bearing electric main shaft, which is named as an air bearing electric main shaft and is disclosed in China published patent No. CN202684109U, published in 2013, 1 month and 23 days, wherein the front end of the air bearing electric main shaft is provided with a waterproof sleeve (2), and the waterproof sleeve (2) is sleeved on the main shaft (1) of the air bearing electric main shaft and is in interference fit with the main shaft (1) of the air bearing electric main shaft; the excircle of the waterproof sleeve (2) is provided with a spiral groove (3). The utility model adopts the structure that the waterproof sleeve is arranged at the front end of the electric main shaft of the air bearing, thereby effectively avoiding the phenomenon that the cooling liquid enters the electric main shaft to damage the air bearing when the electric main shaft works in the environment with the cooling liquid, and prolonging the service life of the electric main shaft; in addition, the air bearing electric spindle is adopted, and the high rotating speed and high precision performance of the electric spindle are guaranteed.
But the defects of the heat exchanger are that air is adopted for heat dissipation, and the heat exchange efficiency is insufficient.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a permanent magnetism synchronization electric main shaft for horizontal deep-hole drilling machine has been designed to the not enough problem of current electric main shaft adoption air heat transfer heat exchange efficiency.
A permanent magnet synchronous electric spindle for a horizontal deep hole drilling machine comprises:
the main shaft box body is provided with a front flange, a liquid cooling base and a rear flange in sequence on the outer side of the box body, and the rear flange is provided with a locking ring;
the spindle is sleeved in the spindle box body, and a rotor seat is arranged at the middle section of the spindle;
the gland structure is arranged on the front side of the main shaft box, and the front end of the main shaft is detachably connected with the main shaft box and is matched with the main shaft for working;
the stator is arranged in the middle section in the main shaft box body;
and the rotor is arranged on the rotor seat and is matched with the stator to work.
The spindle is fixed in a spindle box body through a front flange and a rear locking ring, sealing grooves and oil cooling circulation grooves are distributed at two ends of a liquid cooling machine base, oil outlet holes are punched at two ends of the spindle box body corresponding to the circulation grooves, circulation of cooling oil can be achieved, an electric spindle stator is cooled, the front end inside the electric spindle stator is an angular contact bearing and is distributed according to a TBT structure, the rear end of the electric spindle stator is also an angular contact bearing and is distributed according to a DB structure, the spindle stator and the liquid cooling machine base are in interference fit to transmit torque, a rotor is in clearance fit with a spindle through a rotor bushing, one end of the rotor is in Z1 type expansion sleeve expansion connection, and the other end of the rotor is in keyway connection to transmit torque.
The encoder is used for carrying out accurate control and feedback to the rotational speed and the position of main shaft, and the waterproof maze of afterbody helps dustproof and waterproof at rear portion, and the motor lead of stator is drawn forth from encoder protection casing rear end plane.
The front end of the main shaft is a 1:10 inner cone, the rear end of the main shaft is a connector for mounting a rotary joint, and the middle of the main shaft is a through hole.
Preferably, the tail part of the main spindle box body is provided with an encoder and an encoder protective cover;
the encoder is sleeved on the main shaft and is fixedly connected with the main shaft box body;
the encoder protective cover is arranged at the tail part of the rear flange of the main shaft box body, is used for protecting the encoder and is detachably connected with the main shaft box body;
the tail part of the encoder protective cover is provided with a tail part waterproof labyrinth;
the tail waterproof labyrinth is sleeved on the main shaft and detachably connected with the encoder protective cover.
Preferably, angular contact bearings are arranged between the main shaft and the main shaft box body and are divided into two groups, the front end group is arranged according to a TBT structure, and the rear end group is arranged according to a DB structure;
an axial nut is further arranged in the main spindle box body and used for limiting the axial position of the angular contact bearing, and the axial nut is in threaded connection with the main spindle box body.
Preferably, the capping structure includes:
the bearing gland is used for matching with the axial nut to fix the angular contact bearing and is detachably connected with the front flange of the main spindle box body;
the labyrinth cover is used for sealing the main shaft, is arranged on the front side of the bearing gland, is sleeved on the main shaft and is fixedly connected with the bearing gland.
Preferably, the rotor holder includes: the first end of the rotor bushing is a Z1 type expansion sleeve, and the second end of the rotor bushing is a key;
a key groove is formed in the main shaft and matched with a key at the second end of the rotor bushing;
the rotor bushing is fixedly connected with the main shaft through a Z1 type expansion sleeve;
the rotor is mounted on a rotor bushing.
The beneficial effects of the utility model reside in that: the whole unit direct-connected main shaft replaces the traditional transmission mode that a motor and a belt are connected to drive the main shaft, a large amount of space is saved in installation, the size of the whole machine is reduced, and the operation of the equipment is more convenient.
The whole unit direct-connected spindle ensures the concentricity of the drill bit in the aspects of clamping and processing, so that the processing precision is more accurate.
The permanent magnet synchronous electric spindle has the characteristics of low speed and constant torque, can achieve the rated torque even in low-speed processing, ensures the processing efficiency, and has high overload capacity.
The liquid cooling machine base is provided with the oil cooling grooves, so that the temperature rise of the whole main shaft can be well controlled, and the stator and the rotor are effectively protected.
Drawings
FIG. 1 is a schematic sectional view of the present invention;
in the figure: 1. The device comprises a main shaft, 2, a labyrinth cover, 3, a bearing gland, 4, a front flange, 5, a sealing groove, 6, an angular contact bearing, 7, an axial nut, 8, a stator, 9, a rotor, 10, a liquid cooling base, 11, a rear flange, 12, a locking ring, 13, an encoder, 14, an encoder protective cover, 15, a tail waterproof labyrinth, 16, a motor lead, 17 and Z1 type expansion sleeves, 18, a rotor bushing, 19 and a key groove.
Detailed Description
The technical solution of the present invention is further specifically described below by way of specific embodiments and with reference to the accompanying drawings.
Example 1
As shown in fig. 1, the permanent magnet synchronous electric spindle 1 for a horizontal deep-hole drilling machine includes:
the main shaft 1 comprises a box body, wherein a front flange 4, a liquid cooling base 10 and a rear flange 11 are sequentially arranged on the outer side of the box body, and a locking ring 12 is arranged on the rear flange 11;
the main shaft 1 is sleeved in the main shaft 1 box body, and a rotor 9 seat is arranged at the middle section of the main shaft 1 box body;
the gland structure is arranged on the front side of the box body of the main shaft 1, and the front end of the main shaft 1 is detachably connected with the box body of the main shaft 1 and is matched with the main shaft 1 for working;
the stator 8 is arranged in the middle section inside the box body of the main shaft 1;
and the rotor 9 is arranged on the rotor 9 seat and is matched with the stator 8 to work.
The main shaft 1 is fixed in a main shaft 1 box body through a front flange 4 and a rear locking ring 12, two ends of a liquid cooling machine base 10 are provided with a sealing groove 5 and an oil cooling circulation groove, oil outlet holes are drilled at two end positions of the main shaft 1 box body corresponding to the circulation grooves, circulation of cooling oil can be realized, a stator 8 of the electric main shaft 1 is cooled, the front end inside the electric main shaft 1 is provided with an angular contact bearing 6 and is arranged according to a TBT structure, the rear end of the electric main shaft 1 is also provided with the angular contact bearing 6 and is arranged according to a DB structure, the stator 8 of the main shaft 1 and the liquid cooling machine base 10 are in over-win fit to transmit torque, a rotor 9 is in clearance fit with the main shaft 1 through a rotor bush 18, one end of the rotor bush is in Z1 type expansion sleeve 17 tight connection, and the other end of the rotor bush is in keyway 19 connection to transmit torque.
The encoder 13 is used for accurately controlling and feeding back the rotating speed and the position of the spindle 1, the tail waterproof labyrinth 15 is beneficial to dust prevention and water prevention of the rear portion, and a motor lead of the stator 8 is led out from the plane of the rear end of the encoder protective cover 14.
The front end of the main shaft 1 is a 1:10 inner cone, the rear end is an interface for installing a rotary joint, and the middle is a through hole for penetration.
The tail part of the box body of the main shaft 1 is provided with an encoder 13 and an encoder protective cover 14;
the encoder 13 is sleeved on the main shaft 1 and is fixedly connected with the box body of the main shaft 1;
the encoder protective cover 14 is arranged at the tail part of the rear flange 11 of the box body of the main shaft 1, is used for protecting the encoder 13 and is detachably connected with the box body of the main shaft 1;
the tail part of the encoder protective cover 14 is provided with a tail part waterproof labyrinth 15;
the tail waterproof labyrinth 15 is sleeved on the main shaft 1, and the tail waterproof labyrinth 15 is detachably connected with the encoder protective cover 14.
An angular contact bearing 6 is arranged between the main shaft 1 and the main shaft 1 box body, the angular contact bearing 6 is divided into two groups, the front end group is arranged according to a TBT structure, and the rear end group is arranged according to a DB structure;
an axial nut 7 is further arranged in the main shaft 1 box body and used for limiting the axial position of the angular contact bearing 6, and the axial nut 7 is in threaded connection with the main shaft 1 box body.
The gland structure include:
the bearing gland 3 is used for matching with an axial nut 7 to fix an angular contact bearing 6 and is detachably connected with a front flange 4 of the box body of the main shaft 1;
and the labyrinth cover 2 is used for sealing the main shaft 1, is arranged on the front side of the bearing gland 3, is sleeved on the main shaft 1 and is fixedly connected with the bearing gland 3.
The rotor 9 seat comprises: a rotor bushing 18, a first end of which is a Z1 type expansion sleeve 17 and a second end of which is a key;
a key groove 19 is formed in the main shaft 1, and the key groove 19 is matched with a key at the second end of the rotor bushing 18;
the rotor bush 18 is fixedly connected with the main shaft 1 through a Z1 type expansion sleeve 17;
the rotor 9 is mounted on a rotor bushing 18.
The rear waterproof labyrinth 15 helps dust and water prevention at the rear, and the motor lead 16 of the stator 8 is led out from the rear plane of the encoder shield 14.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. A permanent magnet synchronous electric spindle for a horizontal deep hole drilling machine is characterized by comprising:
the main shaft box body is provided with a front flange, a liquid cooling base and a rear flange in sequence on the outer side of the box body, and the rear flange is provided with a locking ring;
the spindle is sleeved in the spindle box body, and a rotor seat is arranged at the middle section of the spindle;
the gland structure is arranged on the front side of the main shaft box, and the front end of the main shaft is detachably connected with the main shaft box and is matched with the main shaft for working;
the stator is arranged in the middle section in the main shaft box body;
and the rotor is arranged on the rotor seat and is matched with the stator to work.
2. The permanent magnet synchronous electric spindle for the horizontal deep hole drilling machine as claimed in claim 1, wherein an encoder and an encoder protective cover are arranged at the tail part of the main spindle box body;
the encoder is sleeved on the main shaft and is fixedly connected with the main shaft box body;
the encoder protective cover is arranged at the tail part of the rear flange of the main shaft box body, is used for protecting the encoder and is detachably connected with the main shaft box body;
the tail part of the encoder protective cover is provided with a tail part waterproof labyrinth;
the tail waterproof labyrinth is sleeved on the main shaft and detachably connected with the encoder protective cover.
3. The permanent magnet synchronous electric spindle for the horizontal deep hole drilling machine as claimed in claim 1, wherein angular contact bearings are arranged between the spindle and the main spindle box, the angular contact bearings are divided into two groups, the front group is arranged according to a TBT structure, and the rear group is arranged according to a DB structure;
an axial nut is further arranged in the main spindle box body and used for limiting the axial position of the angular contact bearing, and the axial nut is in threaded connection with the main spindle box body.
4. The permanent magnet synchronous electric spindle for the horizontal deep hole drilling machine according to claim 3, wherein the gland structure comprises:
the bearing gland is used for matching with the axial nut to fix the angular contact bearing and is detachably connected with the front flange of the main spindle box body;
the labyrinth cover is used for sealing the main shaft, is arranged on the front side of the bearing gland, is sleeved on the main shaft and is fixedly connected with the bearing gland.
5. The permanent magnet synchronous electric spindle for the horizontal deep hole drilling machine according to claim 1, wherein the rotor base comprises: the first end of the rotor bushing is a Z1 type expansion sleeve, and the second end of the rotor bushing is a key;
a key groove is formed in the main shaft and matched with a key at the second end of the rotor bushing;
the rotor bushing is fixedly connected with the main shaft through a Z1 type expansion sleeve;
the rotor is mounted on a rotor bushing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022863700.7U CN213857088U (en) | 2020-12-03 | 2020-12-03 | Permanent magnet synchronous electric spindle for horizontal deep hole drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022863700.7U CN213857088U (en) | 2020-12-03 | 2020-12-03 | Permanent magnet synchronous electric spindle for horizontal deep hole drilling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213857088U true CN213857088U (en) | 2021-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022863700.7U Active CN213857088U (en) | 2020-12-03 | 2020-12-03 | Permanent magnet synchronous electric spindle for horizontal deep hole drilling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213857088U (en) |
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2020
- 2020-12-03 CN CN202022863700.7U patent/CN213857088U/en active Active
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