CN220196341U - Mechanical main shaft - Google Patents
Mechanical main shaft Download PDFInfo
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- CN220196341U CN220196341U CN202321253516.8U CN202321253516U CN220196341U CN 220196341 U CN220196341 U CN 220196341U CN 202321253516 U CN202321253516 U CN 202321253516U CN 220196341 U CN220196341 U CN 220196341U
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- main shaft
- bearing
- shaft body
- cylindrical hole
- spacer bush
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- 125000006850 spacer group Chemical group 0.000 claims abstract description 35
- 210000004907 gland Anatomy 0.000 claims abstract description 12
- 238000003754 machining Methods 0.000 abstract description 12
- 230000033001 locomotion Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model belongs to the technical field of general machining equipment, and particularly relates to a mechanical main shaft. The novel spindle comprises a sleeve, wherein a spindle mounting hole is formed in the sleeve, and a spindle body is rotationally arranged in the spindle mounting hole. The main shaft body is sequentially sleeved with a front bearing, a spacer bush and a rear bearing from front to back, and the front bearing, the spacer bush and the rear bearing are sequentially connected; the number of the front bearings is 4, the number of the rear bearings is 1, and the main shaft body rotates in the main shaft mounting hole through the front bearings and the rear bearings; the front side of the front bearing is provided with a front bearing cover, the rear side of the rear bearing is provided with a rear gland, and the front bearing, the spacer bush and the rear bearing are arranged in the main shaft mounting hole in a pressure-bearing mode by the front bearing cover and the rear gland. The utility model has the advantages of simple and quick processing, strong rigidity and high working precision.
Description
Technical Field
The utility model belongs to the technical field of general machining equipment, and particularly relates to a mechanical main shaft.
Background
A machine spindle refers to a shaft on a machine tool that rotates a workpiece or tool. The spindle unit is usually composed of a spindle, a bearing, a transmission member (gear or pulley), and the like. The machine is mainly used for supporting transmission parts such as gears and pulleys and transmitting motion and torque, such as a machine tool spindle; and are used to clamp a workpiece, such as a mandrel. Most of the machine tools have a spindle unit, except for those in which the main motion of the planer, broacher, etc. is linear motion.
The accuracy of movement and structural rigidity of the spindle unit are important factors in determining machining quality and cutting efficiency. The traditional mechanical main shaft is provided with 2-3 bearings at the front end of the main shaft body, and the rear end of the main shaft body is also provided with 2-3 bearings, so that the rigidity of the main shaft is insufficient, and the machining precision is affected. The main shaft mounting hole and the main shaft body of the traditional mechanical main shaft are required to be provided with slotted holes for mounting the bearing in advance, the processing process is complicated, the processing steps are more, the concentricity of the processing steps is difficult to control, and finally the processing precision of the main shaft is influenced.
Disclosure of Invention
The utility model aims to solve the defects of the prior art and provides the mechanical main shaft which has strong rigidity, high working precision and simple and quick processing.
The utility model aims at solving the problems through the following technical scheme:
a mechanical spindle, characterized in that: the device comprises a sleeve, wherein a main shaft mounting hole is formed in the sleeve, and a main shaft body is rotationally arranged in the main shaft mounting hole;
the main shaft body is sequentially sleeved with a front bearing, a spacer bush and a rear bearing from front to back, and the front bearing, the spacer bush and the rear bearing are sequentially connected; the number of the front bearings is 4, the number of the rear bearings is 1, and the main shaft body rotates in the main shaft mounting hole through the front bearings and the rear bearings; the front side of the front bearing is provided with a front bearing cover, the rear side of the rear bearing is provided with a rear gland, and the front bearing, the spacer bush and the rear bearing are arranged in the main shaft mounting hole in a pressure-bearing mode by the front bearing cover and the rear gland.
Based on the structure, the number of the front bearings is 4, and the number of the rear bearings is 1, so that the structural rigidity and stability of the front end of the main shaft body for placing the cutter are improved, and the machining precision of the main shaft body is improved; the front bearing and the rear bearing are separated by the spacer bush, grooves for placing the front bearing and the rear bearing do not need to be processed on the main shaft body, the processing difficulty of the main shaft is reduced, the coaxiality of the main shaft is improved, and the processing precision of the main shaft is improved.
Preferably, the spindle mounting hole of the present utility model includes a first cylindrical hole, a second cylindrical hole and a third cylindrical hole sequentially arranged from front to back, the first cylindrical hole having a diameter larger than that of the second cylindrical hole, and the third cylindrical hole having a diameter larger than that of the second cylindrical hole.
Preferably, the front end of the main shaft body is provided with the cutter mounting hole, and the shaft part of the main shaft body is a stepped cylinder with the outer diameter gradually decreasing from front to back and comprises a first step, a second step, a third step and a fourth step.
Furthermore, the front bearing is sleeved on the second step and is positioned in the first cylindrical hole, and the front end of the front bearing abuts against the first step; the spacer bush is sleeved on the third step and positioned in the second cylindrical hole, and the outer diameter of the spacer bush is smaller than the diameter of the second cylindrical hole; the rear bearing is sleeved on the third step and is positioned in the third cylindrical hole.
Preferably, the joint of the front bearing cover and the main shaft body is provided with a waterproof ring.
Furthermore, the head of the main shaft body is provided with the front waterproof cover, and the front waterproof cover is positioned at the front end of the front bearing cover.
Further, the rear end of the main shaft body is sequentially sleeved with a rear spacer bush, a first nut, an encoder magnetic ring, an oil cylinder belt pulley and a second nut; the rear spacer bush, the first nut, the encoder magnetic ring, the oil cylinder belt pulley and the second nut are connected in sequence; the outer side of the first nut is sleeved with an encoder auxiliary plate, and the encoder auxiliary plate is fixed on the rear gland and is positioned at the front side of the encoder magnetic ring;
the rear spacer bush is sleeved on the third step, the first nut is connected with the tail of the third step in a threaded mode and fixes the rear spacer bush on the third step, the encoder magnetic ring and the oil cylinder belt pulley are sleeved on the fourth step, and the second nut is connected with the tail of the fourth step in a threaded mode and fixes the encoder magnetic ring and the oil cylinder belt pulley on the fourth step.
Furthermore, the outer cover of the magnetic ring of the encoder is provided with a plastic cover, and the plastic cover is fixed on the auxiliary plate of the encoder.
Preferably, the central axis of the tool mounting hole, the central axis of the second step, the central axis of the third step and the central axis of the fourth step are all coincident, and the main shaft body is integrally formed.
Preferably, the outer side of the tail part of the sleeve is sleeved with a threaded holding ring.
Compared with the prior art, the utility model has the following characteristics and beneficial effects:
1. the number of the front bearings is 4, and the number of the rear bearings is 1, so that the structural rigidity and stability of the front end of the main shaft body for placing the cutter are improved, and the machining precision of the main shaft body is improved.
2. The front bearing and the rear bearing are separated by the spacer bush, so that grooves for placing the front bearing and the rear bearing do not need to be specially machined on the main shaft body, the machining difficulty of the main shaft is reduced, the coaxiality of the main shaft is improved, and the machining precision of the main shaft is improved.
3. The main shaft body is integrally formed, so that the rigidity of the main shaft body is improved, and the machining precision is improved.
4. The waterproof ring and the front waterproof cover can prevent water from entering the main shaft mounting hole, and the main shaft body and other parts inside the main shaft body are prevented from rusting to influence the machining precision and the practical service life.
5. The outer cover of the magnetic ring of the encoder is provided with a plastic cover, and the plastic cover can prevent the dust fall of the magnetic ring of the encoder and ensure the normal work of the magnetic ring of the encoder.
Drawings
FIG. 1 is a schematic diagram of a front cross-sectional structure of the present utility model.
In the figure: the novel spindle comprises a sleeve 1, a spindle mounting hole 2, a spindle body 3, a threaded hug ring 4, a front bearing 5, a spacer bush 6, a rear bearing 7, a bearing front cover 8, a rear gland 9, a first cylindrical hole 10, a second cylindrical hole 11, a third cylindrical hole 12, a cutter mounting hole 13, a first step 14, a second step 15, a third step 16, a fourth step 17, a waterproof ring 18, a front waterproof cover 19, a rear spacer bush 20, a first nut 21, an encoder magnetic ring 22, an oil cylinder belt pulley 23, a second nut 24, a plastic cover 25 and an encoder auxiliary plate 26.
Detailed Description
The utility model will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, a mechanical main shaft comprises a sleeve 1, wherein a main shaft mounting hole 2 is formed in the sleeve 1, and a main shaft body 3 is rotationally arranged in the main shaft mounting hole 2; the outer side of the tail part of the sleeve 1 is sleeved with a thread holding ring 4.
The main shaft body 3 is sequentially sleeved with a front bearing 5, a spacer bush 6 and a rear bearing 7 from front to back, and the front bearing 5, the spacer bush 6 and the rear bearing 7 are sequentially connected. The number of the front bearings 5 is 4, the number of the rear bearings 7 is 1, and the main shaft body 3 rotates in the main shaft mounting hole 2 through the front bearings 4 and the rear bearings 7. The front side of the front bearing 4 is provided with a bearing front cover 8, the rear side of the rear bearing 7 is provided with a rear gland 9, and the bearing front cover 8 and the rear gland 9 press the front bearing 4, the spacer bush 5 and the rear bearing 7 in the main shaft mounting hole 2.
Based on the structure, the number of the front bearings 5 is 4, and the number of the rear bearings 7 is 1, so that the structural rigidity and stability of the front end of the main shaft body 3 for placing a cutter are improved, and the machining precision of the main shaft body is improved. The front bearing 5 and the rear bearing 7 are separated by the spacer bush 6, and grooves for placing the front bearing 5 and the rear bearing 7 do not need to be specially processed on the main shaft body 3, so that the processing difficulty of the main shaft body 3 is reduced, the coaxiality of the main shaft is improved, and the processing precision of the main shaft is improved.
The spindle mounting hole 2 includes a first cylindrical hole 10, a second cylindrical hole 11, and a third cylindrical hole 12 arranged in this order from front to back, the first cylindrical hole 10 having a diameter larger than the second cylindrical hole 11, and the third cylindrical hole 12 having a diameter larger than the second cylindrical hole 11.
The front end of the main shaft body 3 is provided with a cutter mounting hole 13, the shaft part of the main shaft body 3 is a step-shaped cylinder with the outer diameter gradually becoming smaller from front to back, the main shaft body comprises a first step 14, a second step 15, a third step 16 and a fourth step 17, the central axes of the cutter mounting hole 13, the second step 15, the third step 16 and the fourth step 17 are all coincident, the main shaft body 3 is integrally formed, the rigidity of the main shaft body is improved, and therefore the machining precision is improved.
The front bearing 5 is sleeved on the second step 15 and is positioned in the first cylindrical hole 10, and the front end of the front bearing 5 is propped against the first step 14; the spacer bush 6 is sleeved on the third step 16 and is positioned in the second cylindrical hole 11, and the outer diameter of the spacer bush 6 is smaller than the diameter of the second cylindrical hole 11; the rear bearing 7 is sleeved on the third step 16 and is positioned in the third cylindrical hole 12.
The joint of the bearing front cover 8 and the main shaft body 3 is provided with a waterproof ring 18. The head of the main shaft body 3 is provided with a front waterproof cover 19, and the front waterproof cover 19 is positioned at the front end of the front bearing cover 18. The waterproof ring 18 and the front waterproof cover 19 can prevent water from entering the main shaft mounting hole 2, and the main shaft body 3 and other parts inside the main shaft body are prevented from rusting to influence the processing precision and the service life.
The rear end of the main shaft body 3 is sequentially sleeved with a rear spacer 20, a first nut 21, an encoder magnetic ring 22, an oil cylinder belt pulley 23 and a second nut 24; the rear spacer bush 20, the first nut 21, the encoder magnetic ring 22, the oil cylinder belt pulley 23 and the second nut 24 are connected in sequence. The outer side of the first nut 21 is sleeved with an encoder auxiliary plate 26, and the encoder auxiliary plate 26 is fixed on the rear gland 9 and is positioned at the front side of the encoder magnetic ring 22. The rear spacer bush 20 is sleeved on the third step 16, the first nut 21 is in threaded connection with the tail of the third step 16 and fixes the rear spacer bush 20 on the third step 16, the encoder magnetic ring 22 and the oil cylinder belt pulley 23 are sleeved on the fourth step 17, and the second nut 24 is in threaded connection with the tail of the fourth step 17 and fixes the encoder magnetic ring 22 and the oil cylinder belt pulley 23 on the fourth step 17. The outer cover of the encoder magnetic ring 22 is provided with a plastic cover 25, the plastic cover 25 is fixed on the encoder auxiliary plate 9, and the plastic cover 25 can prevent the encoder magnetic ring 22 from falling ash and ensure the normal work of the encoder magnetic ring.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.
Claims (10)
1. A mechanical spindle, characterized in that: the device comprises a sleeve, wherein a main shaft mounting hole is formed in the sleeve, and a main shaft body is rotationally arranged in the main shaft mounting hole;
the main shaft body is sequentially sleeved with a front bearing, a spacer bush and a rear bearing from front to back, and the front bearing, the spacer bush and the rear bearing are sequentially connected; the number of the front bearings is 4, the number of the rear bearings is 1, and the main shaft body rotates in the main shaft mounting hole through the front bearings and the rear bearings; the front side of the front bearing is provided with a front bearing cover, the rear side of the rear bearing is provided with a rear gland, and the front bearing, the spacer bush and the rear bearing are arranged in the main shaft mounting hole in a pressure-bearing mode by the front bearing cover and the rear gland.
2. A mechanical spindle according to claim 1, characterized in that: the main shaft mounting hole comprises a first cylindrical hole, a second cylindrical hole and a third cylindrical hole which are sequentially arranged from front to back, wherein the diameter of the first cylindrical hole is larger than that of the second cylindrical hole, and the diameter of the third cylindrical hole is larger than that of the second cylindrical hole.
3. A mechanical spindle according to claim 2, characterized in that: the front end of the main shaft body is provided with a cutter mounting hole, and the shaft part of the main shaft body is a step-shaped cylinder with the outer diameter gradually becoming smaller from front to back and comprises a first step, a second step, a third step and a fourth step.
4. A mechanical spindle according to claim 3, characterized in that: the front bearing is sleeved on the second step and is positioned in the first cylindrical hole, and the front end of the front bearing abuts against the first step; the spacer bush is sleeved on the third step and positioned in the second cylindrical hole, and the outer diameter of the spacer bush is smaller than the diameter of the second cylindrical hole; the rear bearing is sleeved on the third step and is positioned in the third cylindrical hole.
5. A mechanical spindle according to claim 1 or 2 or 3 or 4, characterized in that: and a waterproof ring is arranged at the joint of the front bearing cover and the main shaft body.
6. A mechanical spindle according to claim 5, characterized in that: the head of the main shaft body is provided with a front waterproof cover, and the front waterproof cover is positioned at the front end of the front bearing cover.
7. A mechanical spindle according to claim 3, characterized in that: the rear end of the main shaft body is sequentially sleeved with a rear spacer bush, a first nut, an encoder magnetic ring, an oil cylinder belt pulley and a second nut; the rear spacer bush, the first nut, the encoder magnetic ring, the oil cylinder belt pulley and the second nut are connected in sequence; the outer side of the first nut is sleeved with an encoder auxiliary plate, and the encoder auxiliary plate is fixed on the rear gland and is positioned at the front side of the encoder magnetic ring;
the rear spacer bush is sleeved on the third step, the first nut is connected with the tail of the third step in a threaded mode and fixes the rear spacer bush on the third step, the encoder magnetic ring and the oil cylinder belt pulley are sleeved on the fourth step, and the second nut is connected with the tail of the fourth step in a threaded mode and fixes the encoder magnetic ring and the oil cylinder belt pulley on the fourth step.
8. The mechanical spindle of claim 7, wherein: the encoder magnetic ring housing is provided with a plastic cover, and the plastic cover is fixed on the encoder auxiliary plate.
9. A mechanical spindle according to claim 3, characterized in that: the central axis of the cutter mounting hole, the central axis of the second step, the central axis of the third step and the central axis of the fourth step are all coincident, and the main shaft body is integrally formed.
10. A mechanical spindle according to claim 1, characterized in that: the outside of the tail part of the sleeve is sleeved with a threaded holding ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321253516.8U CN220196341U (en) | 2023-05-23 | 2023-05-23 | Mechanical main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321253516.8U CN220196341U (en) | 2023-05-23 | 2023-05-23 | Mechanical main shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220196341U true CN220196341U (en) | 2023-12-19 |
Family
ID=89153466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321253516.8U Active CN220196341U (en) | 2023-05-23 | 2023-05-23 | Mechanical main shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220196341U (en) |
-
2023
- 2023-05-23 CN CN202321253516.8U patent/CN220196341U/en active Active
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