CN214351699U - Electric spindle structure for high-torque grinding - Google Patents
Electric spindle structure for high-torque grinding Download PDFInfo
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- CN214351699U CN214351699U CN202120099112.2U CN202120099112U CN214351699U CN 214351699 U CN214351699 U CN 214351699U CN 202120099112 U CN202120099112 U CN 202120099112U CN 214351699 U CN214351699 U CN 214351699U
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- main shaft
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- spindle
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Abstract
The utility model provides an electric main shaft structure for high-power and high-torque grinding, which comprises a main shaft body clamping structure, a grinding and grinding head structure arranged at the front end of the main shaft body clamping structure and a tool changing cylinder arranged at the tail end, wherein the main shaft body clamping structure comprises a main shaft shell, a permanent magnet motor arranged in the main shaft shell, a main shaft mandrel arranged in the permanent magnet motor, a front end bearing seat arranged at the front part of the main shaft shell and a tail end bearing seat arranged at the tail part of the main shaft shell, the inner sides of the front end bearing seat and the tail end bearing seat are respectively connected with a front bearing and a tail bearing, the front bearing and the tail bearing are in contact connection with an inner main shaft mandrel, the front end of the main shaft mandrel is fixedly connected with the grinding and grinding head structure arranged at the outer part of the front end of the main shaft body clamping structure, the tool changing cylinder connected with the rear bearing seat is arranged at the outer part of the tail end of the main shaft mandrel, a tool changing cylinder is arranged in the main shaft mandrel, the front end and the tail end of the broach rod are respectively opposite to the grinding head structure and the center part of the tool changing cylinder.
Description
Technical Field
The utility model belongs to the technical field of machining device technique and specifically relates to an electricity main shaft structure of usefulness is polished to high moment of torsion is related to.
Background
The electric spindle structure used for polishing in the prior art is mainly an asynchronous motor electric spindle. Taking the existing conventional robot polishing industry as an example, a domestic polishing electric spindle with the diameter of 80mm on the market is usually an asynchronous motor electric spindle, only light-load polishing processing can be carried out, and the application range is limited. Simultaneously, the current asynchronous machine electricity main shaft structure for polishing has following problem and shortcoming: the power is not high (within 3 KW), the torque is small, and the high power and the large torque can not be realized in the limited diameter, so that the grinding machine is only suitable for the field of grinding processing with light load.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art, the utility model provides a polishing of high power, high moment of torsion is with electric main shaft structure.
The utility model provides a technical scheme that above-mentioned technical problem adopted does:
the electric spindle structure for high-torque grinding comprises a spindle body clamping structure, a grinding and grinding head structure arranged at the front end of the spindle body clamping structure and a tool changing cylinder arranged at the tail end of the spindle body clamping structure, wherein the spindle body clamping structure comprises a spindle shell, a permanent magnet motor arranged in the spindle shell, a spindle mandrel arranged in the permanent magnet motor, a front end bearing seat arranged at the front part of the spindle shell and a tail end bearing seat arranged at the tail part of the spindle shell, the inner sides of the front end bearing seat and the tail end bearing seat are respectively connected with a front bearing and a tail bearing, the front bearing and the tail bearing are in contact connection with an internal spindle mandrel, the front end of the spindle mandrel is fixedly connected with the grinding and grinding head structure arranged outside the front end of the spindle body clamping structure, the tool changing cylinder connected with the rear bearing seat is arranged outside the tail end of the spindle mandrel, and a tool changing rod is arranged inside the spindle mandrel, the front end and the tail end of the broach rod are respectively opposite to the grinding head structure and the center part of the tool changing cylinder.
Furthermore, the outer part of the permanent magnet motor is fixedly connected with the spindle shell, and the inner part of the permanent magnet motor is connected with the spindle mandrel to drive the spindle mandrel to rotate.
Further, the permanent magnet motor is a 5KW permanent magnet synchronous motor.
Further, the grinding head structure comprises a grinding head part and a handle connecting part, the grinding head part is arranged at the front end of the handle connecting part, and the tail end of the handle connecting part is fixedly connected with the spindle mandrel.
Further, the connecting portion of the tool holder is an ISO20 tool holder, the head portion of the grinding head is mounted in an ISO20 taper hole in the front end of the spindle core through an ISO20 tool holder, and the built-in motor drives the spindle core to rotate and drives the grinding head to grind.
Further, the axis of the grinding head structure coincides with the axis of the spindle mandrel.
Furthermore, the front bearing and the tail bearing are both ceramic ball bearings.
Furthermore, the tail end of the front end bearing seat is connected with the main shaft shell, and the front end of the front end bearing seat is structurally connected with the front end cover.
Further, the front end of the tail end bearing seat is connected with the spindle shell, the tail end of the tail end bearing seat is connected with the tail end cover, and the tool changing cylinder is arranged at the tail part of the tail end cover and is connected with the rear bearing seat through the tail end cover.
The front end is towards the one end of bistrique head, the tail end is towards the one end of tool changing cylinder.
Compared with the prior art, the utility model discloses the advantage that possesses does:
the electric spindle structure for high-torque grinding of the utility model adopts the permanent magnet synchronous motor, improves the power of the spindle structure, increases the torque, and can adapt to the grinding field of some heavy loads and the combined processing field of grinding, milling and drilling; the electric spindle adopting the permanent magnet synchronous motor improves the power and the torque of the motor under the condition of not increasing the overall dimension, meets various processing requirements, and meets various working condition fields such as polishing and processing of a robot. Specifically, the method comprises the following steps:
1. the structure is compact, the structural weight of the electric spindle is small, and the electric spindle is suitable for polishing and processing of high-precision machinery such as a robot and the like;
2. the power is high, and the maximum power can reach 5 KW; the torque is large, and the torque of the rotating speed at 2 ten thousand revolutions per minute can reach 2 NM; the robot can be applied to the processing fields of grinding, deburring, polishing, drilling, milling of non-metallic materials and the like of various robots, and the application range is wider.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the cross-sectional structure a-a of fig. 1.
In the figure, 1-grinding head structure, 11-grinding head part, 12-tool holder connecting part, 2-main shaft body clamping structure, 201-main shaft shell, 202-permanent magnet motor, 203-main shaft core shaft, 204-front end bearing seat, 205-tail end bearing seat, 206-front bearing, 207-tail bearing, 208-tool drawing rod, 209-drawing claw, 210-disc spring, 211-front end cover structure, 212-tail end cover and 3-tool changing cylinder.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, but the scope of the present invention is not limited to the following embodiments. Any equivalent modifications made by those skilled in the art in the light of the present disclosure are intended to be within the scope of the present disclosure.
As shown in fig. 1 and 2, an electric spindle structure for high torque grinding comprises a spindle body clamping structure 2, a grinding wheel head structure 1 disposed at the front end of the spindle body clamping structure 2, and a tool changing cylinder 3 disposed at the rear end of the spindle body clamping structure 2, wherein the spindle body clamping structure 2 comprises a spindle housing 201, a permanent magnet motor 202 disposed inside the spindle housing 201, a spindle shaft 203 disposed inside the permanent magnet motor 202, a front bearing seat 204 disposed at the front portion of the spindle housing 201, and a rear bearing seat 205 disposed at the rear portion of the spindle housing 201, the inner sides of the front bearing seat 204 and the rear bearing seat 205 are respectively connected with a front bearing 206 and a rear bearing 207, the front bearing 206 and the rear bearing 207 are in contact connection with the spindle shaft 203 inside, the front end of the spindle shaft 203 is fixedly connected with the grinding wheel head structure 1 disposed outside the front end of the spindle body clamping structure 2, the tool changing cylinder 3 connected with the rear bearing seat is arranged outside the tail end of the main shaft mandrel 203, the broach rod 208 is arranged inside the main shaft mandrel 203, and the front end and the tail end of the broach rod 208 are respectively opposite to the grinding head structure 1 and the center of the tool changing cylinder 3. The main shaft body clamping structure 2 formed by the main shaft shell 201 and the internal structure thereof is a cylindrical shaft body, and the broach rod 208 is arranged on the central axis of the main shaft mandrel 203.
Further, the outer part of the permanent magnet motor 202 is fixedly connected with the spindle housing 201, and the inner part of the permanent magnet motor 202 is connected with the spindle mandrel 203 to drive the spindle mandrel 203 to rotate.
Further, the permanent magnet motor 202 is a 5KW permanent magnet synchronous motor.
Further, the grinding head structure 1 includes a grinding head 11 and a handle connecting portion 12, the grinding head 11 is disposed at the front end of the handle connecting portion 12, and the tail end of the handle connecting portion 12 is fixedly connected to the spindle mandrel 203.
Further, the tool holder connecting portion 12 is an ISO20 tool holder, the grinding head 11 is mounted in an ISO20 taper hole in the front end of the spindle core through an ISO20 tool holder, and the built-in motor drives the spindle core to rotate to drive the grinding head to grind.
Further, the axis of the grinding wheel head structure 1 is coincident with the axis of the spindle mandrel 203.
Further, the front bearing 206 and the tail bearing 207 are both ceramic ball bearings.
Further, the rear end of the front bearing seat 204 is connected to the spindle housing 201, and the front end is connected to the front end cover structure 211.
Further, the front end of the tail end bearing seat 205 is connected with the spindle housing 201, the tail end is connected with the tail end cover 212, and the tool changing cylinder 3 is arranged at the tail part of the tail end cover 212 and is connected with the rear bearing seat through the tail end cover 212.
The utility model discloses an electric main shaft structure is polished to high moment of torsion adopts permanent magnetism frameless motor to embed to main shaft housing 201, and direct drive main shaft dabber 203 is rotatory, by the rotatory rotational speed of outside converter control main shaft dabber 203. The polishing machine has the characteristics of small volume, high power, large torque and high rigidity, and can be applied to the field of robot polishing under various working conditions. The outer part of the main shaft shell 201 of the main shaft body clamping structure 2 can be used as a robot arm clamping part for polishing the part to be polished; the actually used electric spindle structure has the weight of only 8.5 kilograms, and is suitable for polishing of high-precision machines such as robots.
The utility model discloses the theory of operation of electric main shaft structure is used in high moment of torsion polishing: the permanent magnet synchronous motor is directly installed on a spindle core, the spindle core 203 is supported by a high-precision front bearing 206 and a tail bearing 207, the grinding head 11 is installed in an ISO20 taper hole of the spindle core through an ISO20 knife handle, and the built-in permanent magnet motor 202 drives the spindle core to rotate to drive the grinding head 11 to grind. The tool changing cylinder 3 works, the tool shank of the grinding head structure 1 can be loosened, different types of grinding heads can be replaced, and the grinding head clamp adopts a standard ISO20 interface, so that the application of an automatic scene is facilitated. The specific operation steps for replacing different types of polishing heads are as follows: compressed air is introduced into the tool changing cylinder, after the compressed air enters the cylinder, the piston acts to push the broach rod forward, the disc spring 210 is compressed, the broach rod pushes the pull claw 209 forward to release the grinding head structure, and then the grinding head structure can be taken out; when the different types of polishing heads are replaced, the replaced polishing heads are clamped on the main shaft, compressed air enters the tool changing cylinder, the cavity pushes the piston to retreat, the piston moves to retreat to be separated from the broach rod, the disc spring 210 resets, the broach rod is pushed by the disc spring to retreat to lock a cutter (namely, the replaced polishing head), the broach 209 retreats to tighten the cutter, and the replacement of the polishing heads is completed.
Claims (9)
1. High moment of torsion is polished and is used electric main shaft structure, its characterized in that: comprises a main shaft body clamping structure, a grinding head structure arranged at the front end of the main shaft body clamping structure and a tool changing cylinder arranged at the tail end of the main shaft body clamping structure, the main shaft body clamping structure comprises a main shaft shell, a permanent magnet motor arranged in the main shaft shell, and a main shaft core shaft arranged in the permanent magnet motor, the front end bearing seat is arranged at the front part of the main shaft shell, the tail end bearing seat is arranged at the tail part of the main shaft shell, the inner sides of the front end bearing seat and the tail end bearing seat are respectively connected with a front bearing and a tail bearing, the front bearing and the tail bearing are in contact connection with an internal main shaft mandrel, the front end of the main shaft mandrel is fixedly connected with a grinding and grinding head structure arranged outside the front end of the main shaft body clamping structure, a tool changing cylinder connected with the rear bearing seat is arranged outside the tail end of the main shaft mandrel, a tool pulling rod is arranged inside the main shaft mandrel, and the front end and the tail end of the tool pulling rod are respectively right opposite to the grinding and grinding head structure and the center part of the tool changing cylinder.
2. The electric spindle structure for high-torque grinding according to claim 1, characterized in that: the outer part of the permanent magnet motor is fixedly connected with the spindle shell, and the inner part of the permanent magnet motor is connected with the spindle mandrel to drive the spindle mandrel to rotate.
3. The electric spindle structure for high torque grinding according to claim 1 or 2, characterized in that: the permanent magnet motor is a 5KW permanent magnet synchronous motor.
4. The electric spindle structure for high-torque grinding according to claim 1, characterized in that: the grinding head structure comprises a grinding head part and a handle connecting part, wherein the grinding head part is arranged at the front end of the handle connecting part, and the tail end of the handle connecting part is fixedly connected with the spindle.
5. The electric spindle structure for high-torque grinding according to claim 4, characterized in that: the connecting part of the tool holder is an ISO20 tool holder, and the grinding head is arranged in an ISO20 taper hole at the front end of the spindle core through an ISO20 tool holder.
6. The electric spindle structure for high torque grinding according to claim 1 or 4, characterized in that: the axis of the grinding head structure is coincident with the axis of the spindle mandrel.
7. The electric spindle structure for high-torque grinding according to claim 1, characterized in that: the tail end of the front end bearing seat is connected with the main shaft shell, and the front end of the front end bearing seat is structurally connected with the front end cover.
8. The electric spindle structure for high-torque grinding according to claim 1, characterized in that: the front end of the tail end bearing seat is connected with the main shaft shell, the tail end of the tail end bearing seat is connected with the tail end cover, and the tool changing cylinder is arranged at the tail part of the tail end cover and is connected with the rear bearing seat through the tail end cover.
9. The electric spindle structure for high torque grinding according to any one of claims 1, 7, and 8, wherein: the front bearing and the tail bearing are both ceramic ball bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120099112.2U CN214351699U (en) | 2021-01-14 | 2021-01-14 | Electric spindle structure for high-torque grinding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120099112.2U CN214351699U (en) | 2021-01-14 | 2021-01-14 | Electric spindle structure for high-torque grinding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214351699U true CN214351699U (en) | 2021-10-08 |
Family
ID=77955936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120099112.2U Active CN214351699U (en) | 2021-01-14 | 2021-01-14 | Electric spindle structure for high-torque grinding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214351699U (en) |
-
2021
- 2021-01-14 CN CN202120099112.2U patent/CN214351699U/en active Active
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