CN214560000U - Grinding wheel spindle of centerless grinding machine - Google Patents
Grinding wheel spindle of centerless grinding machine Download PDFInfo
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- CN214560000U CN214560000U CN202022611927.2U CN202022611927U CN214560000U CN 214560000 U CN214560000 U CN 214560000U CN 202022611927 U CN202022611927 U CN 202022611927U CN 214560000 U CN214560000 U CN 214560000U
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Abstract
The utility model provides a centerless grinder's grinding wheel spindle, it can solve the technical problem that current grinding wheel spindle length is difficult to satisfy small-size centerless grinder design demand. The utility model provides a centerless grinder's grinding wheel spindle, includes grinding wheel (holding) chuck, main shaft and drive unit, and the grinding wheel (holding) chuck includes the sleeve main part, sets up in the fixed (holding) chuck of sleeve main part one end and the movable (holding) chuck of demountable installation in the sleeve main part other end, its characterized in that: the drive unit is PMSM, PMSM includes stator and rotor, the stator cover is established and is fixed in outside the main part of main shaft, the rotor cover is located outside the stator and is fixed in the sleeve main part, telescopic both ends are fixed with the bearing frame, install in the bearing frame with the axle journal position complex bearing group at main shaft both ends, the outside end of bearing frame is fixed with end cover, the outside end of axle journal is fixed with the support lid, end cover and support lid form the radial seal structure of zigzag, seal through the sealing washer between end cover and the bearing frame.
Description
Technical Field
The utility model relates to a lathe main shaft technical field, concretely relates to centerless grinder's grinding wheel spindle.
Background
The existing grinding wheel spindle mainly comprises two types, namely a mechanical spindle and an electric spindle. The grinding wheel chuck and the drive of the mechanical shaft and the electric spindle are respectively arranged at different axial parts of the spindle, when a large-size grinding wheel is used in the small-size centerless grinding machine, the length of the grinding wheel in the axial direction of the spindle exceeds the standard, and the design requirement of the small-size centerless grinding machine is difficult to meet.
SUMMERY OF THE UTILITY MODEL
The utility model provides a centerless grinder's grinding wheel spindle, it can solve the technical problem that current grinding wheel spindle length is difficult to satisfy small-size centerless grinder design demand.
The technical scheme is that, a grinding wheel spindle of centerless grinder, includes grinding wheel (holding) chuck, main shaft and drive unit, the grinding wheel (holding) chuck includes the sleeve main part, sets up in the fixed (holding) chuck of sleeve main part one end and the movable (holding) chuck of demountable installation in the sleeve main part other end, its characterized in that: the drive unit is PMSM, PMSM includes stator and rotor, the stator cover is established and is fixed in outside the main part of main shaft, the rotor cover is located the stator is outer and be fixed in the sleeve main part, telescopic both ends are fixed with the bearing frame, install in the bearing frame with the axle journal position complex bearing group at main shaft both ends, the outside end of bearing frame is fixed with end cover, the outside end of axle journal is fixed with the support lid, end cover with the radial seal structure of zigzag is formed to the support lid, end cover with it is sealed through the sealing washer between the bearing frame.
Furthermore, a bearing inner ring on the inner side of the bearing group abuts against an outer step surface of the main body through an adjusting ring, a bearing outer ring on the inner side of the bearing group abuts against an inner step surface of the bearing seat, a bearing inner ring on the outer side of the bearing group abuts against a locking nut, the locking nut is in threaded connection with the main body, and a bearing outer ring on the outer side of the bearing group abuts against a pressing ring formed by inward extension of a sealing end cover; the adjusting ring and the bearing seat form a zigzag axial sealing structure.
Further, the main part with be fixed with water proof circle between the stator, the lateral wall of main part is equipped with the cooling trough, the cooling trough by water proof circle covers, be equipped with cooling inhalant canal and cooling exhalant canal in the main shaft, the entry and the cooling inlet tube of cooling trough are connected to cooling inhalant canal, the export of cooling exhalant canal with the cooling outlet pipe, the cooling inlet pipe with one of them is all run through to the cooling outlet pipe support the lid.
Furthermore, the outer side end faces of the fixed chuck plate and the movable chuck plate are respectively provided with scale marks distributed along the circumferential direction and a balance block group which is detachably arranged.
The utility model discloses a grinding wheel spindle, in placing PMSM in the sleeve main part of emery wheel chuck, replace the sleeve of original main shaft with the sleeve main part of emery wheel chuck to PMSM's rotor is external, drives the emery wheel chuck and rotates, emery wheel chuck and PMSM set up in the same position of main shaft axis direction, can effectively reduce the length of emery wheel spindle whole axis direction, and then satisfy small-size centerless grinder design demand; the sealing end cover connected with the outer side of the bearing seat is sealed with the supporting cover through a zigzag radial sealing structure, the sealing end cover is sealed with the bearing seat through a sealing ring, and the adjusting ring is sealed with the inner side part of the bearing seat through a zigzag axial sealing structure, so that a good sealing effect can be realized; because the grinding wheel chuck and the permanent magnet synchronous motor are arranged at the same position in the axial direction of the spindle, in the working process of the grinding wheel spindle, the grinding wheel can be synchronously cooled by the corresponding cooling structure of the inner permanent magnet synchronous motor besides the external grinding fluid, and the grinding wheel is ensured to obtain a good cooling effect.
Drawings
Fig. 1 is a schematic structural diagram of a grinding wheel spindle of the centerless grinding machine of the present invention.
Fig. 2 is a schematic diagram of the balance block set and the movable chuck of the present invention.
Detailed Description
As shown in fig. 1 and 2, a grinding wheel spindle of a centerless grinding machine comprises a grinding wheel chuck, a spindle 2 and a driving unit, wherein the grinding wheel chuck comprises a sleeve body 1a, a fixed chuck 1b fixed at one end of the sleeve body 1a and a movable chuck 1c detachably mounted at the other end of the sleeve body 1a, the outer end faces of the fixed chuck 1b and the movable chuck 1c are respectively provided with scale marks distributed along the circumferential direction and a balance block group detachably mounted thereon, the balance block group comprises 3 balance blocks 5m arranged along the circumferential direction of the chuck to realize static balance fine adjustment, the driving unit is a permanent magnet synchronous motor, the permanent magnet synchronous motor comprises a stator 9 and a rotor 10, the stator 9 is sleeved and fixed outside the body of the spindle 2, the rotor 10 is sleeved outside the stator 9 and fixed inside the sleeve body 1a, bearing seats 7 are fixed at two ends of the sleeve, bearing seats 4 matched with shaft necks at two ends of the spindle 2 are mounted inside the bearing seats 7, a sealing end cover 3 is fixed at the outer side end of the bearing seat 7, a supporting cover 8 is fixed at the outer side end of the shaft neck, the sealing end cover 3 and the supporting cover 8 form a zigzag radial sealing structure, and the sealing end cover 3 and the bearing seat 7 are sealed through a sealing ring.
The inner bearing ring on the inner side of the bearing group 4 abuts against the outer step surface of the main body through the adjusting ring 15, the outer bearing ring on the inner side of the bearing group 4 abuts against the inner step surface of the bearing seat 7, the inner bearing ring on the outer side of the bearing group 4 abuts against the locking nut 16, the locking nut 16 is in threaded connection with the main body, and the outer bearing ring on the outer side of the bearing group 4 abuts against a pressing ring formed by inward extension of the sealing end cover 3; the adjusting ring 15 and the bearing seat 7 form a zigzag axial sealing structure.
A water-stop ring 6 is fixed between the main body and the stator 9, a cooling water tank 14 is arranged on the outer side wall of the main body and covered by the water-stop ring 6, a cooling water inlet channel and a cooling water outlet channel (not shown) are arranged in the main shaft 2, the cooling water inlet channel is connected with an inlet of the cooling water tank and a cooling water inlet pipe 11, the cooling water outlet channel is connected with an outlet of the cooling water tank and a cooling water outlet pipe 12, and the cooling water inlet pipe 11 and the cooling water outlet pipe 12 both penetrate through the support cover 8 on the right side; because the stator of the permanent magnet synchronous motor is fixed with the main shaft, the cooling water tank is arranged on the outer side of the main body of the main shaft, and the main shaft does not rotate in the rotation process of the grinding wheel, a movable switching structure and a complex dynamic sealing structure are not required to be designed between the cooling water inlet/outlet channel in the main shaft and the cooling water inlet/outlet connecting pipe, and the manufacturing cost and the using cost of the grinding wheel main shaft can be effectively reduced.
Claims (4)
1. The utility model provides a centerless grinder's emery wheel main shaft, includes emery wheel (holding) chuck, main shaft and drive unit, emery wheel (holding) chuck includes the sleeve main part, sets up in the fixed (holding) chuck of sleeve main part one end and the movable (holding) chuck of demountable installation in the sleeve main part other end, its characterized in that: the drive unit is PMSM, PMSM includes stator and rotor, the stator cover is established and is fixed in outside the main part of main shaft, the rotor cover is located the stator is outer and be fixed in the sleeve main part, telescopic both ends are fixed with the bearing frame, install in the bearing frame with the axle journal position complex bearing group at main shaft both ends, the outside end of bearing frame is fixed with end cover, the outside end of axle journal is fixed with the support lid, end cover with the radial seal structure of zigzag is formed to the support lid, end cover with it is sealed through the sealing washer between the bearing frame.
2. The grinding wheel spindle of a centerless grinding machine as claimed in claim 1, wherein: the bearing inner ring on the inner side of the bearing group abuts against the outer step surface of the main body through an adjusting ring, the bearing outer ring on the inner side of the bearing group abuts against the inner step surface of the bearing seat, the bearing inner ring on the outer side of the bearing group abuts against a locking nut, the locking nut is in threaded connection with the main body, and the bearing outer ring on the outer side of the bearing group abuts against a pressing ring formed by inward extension of a sealing end cover; the adjusting ring and the bearing seat form a zigzag axial sealing structure.
3. The grinding wheel spindle of a centerless grinding machine as claimed in claim 2, wherein: the main part with be fixed with water proof circle between the stator, the lateral wall of main part is equipped with the cooling trough, the cooling trough by water proof circle covers, be equipped with cooling inhalant canal and cooling exhalant canal in the main shaft, cooling inhalant canal connects the entry and the cooling inlet tube of cooling trough, the export and the cooling outlet pipe of cooling exhalant canal connection cooling trough, the cooling inlet tube with one of them is all run through to the cooling outlet pipe support the lid.
4. A grinding wheel spindle of a centerless grinding machine as defined in claim 3, wherein: the outer side end face of the fixed chuck plate and the outer side end face of the movable chuck plate are provided with scale marks distributed along the circumferential direction and detachably provided with balance block groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022611927.2U CN214560000U (en) | 2020-11-12 | 2020-11-12 | Grinding wheel spindle of centerless grinding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022611927.2U CN214560000U (en) | 2020-11-12 | 2020-11-12 | Grinding wheel spindle of centerless grinding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214560000U true CN214560000U (en) | 2021-11-02 |
Family
ID=78324397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022611927.2U Active CN214560000U (en) | 2020-11-12 | 2020-11-12 | Grinding wheel spindle of centerless grinding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214560000U (en) |
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2020
- 2020-11-12 CN CN202022611927.2U patent/CN214560000U/en active Active
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