CN210819079U - Spindle device and centerless grinding machine - Google Patents
Spindle device and centerless grinding machine Download PDFInfo
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- CN210819079U CN210819079U CN201921589100.7U CN201921589100U CN210819079U CN 210819079 U CN210819079 U CN 210819079U CN 201921589100 U CN201921589100 U CN 201921589100U CN 210819079 U CN210819079 U CN 210819079U
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Abstract
The utility model belongs to the technical field of centerless grinder, a spindle unit and centerless grinder is related to, including main shaft and sectional type supporting element, preceding support bearing installs on the front bearing installation position, preceding bearing installation hole site with the external diameter looks adaptation of preceding support bearing, preceding support bearing installs in the preceding support bearing seat, well support bearing installs on the well bearing installation position, well bearing installation hole site with well support bearing's external diameter looks adaptation, well support bearing installs in the well support bearing seat, back support bearing installs on the back bearing installation position, back bearing installation hole site with back support bearing's external diameter looks adaptation, back support bearing installs in the back support bearing seat. The utility model discloses a sectional type supporting element, the machining precision of front bearing installation hole site, well bearing installation hole site and back bearing installation hole site is close the required precision of design, has promoted the rotation precision of main shaft.
Description
Technical Field
The utility model belongs to the technical field of centerless grinder, especially, relate to a spindle unit and centerless grinder.
Background
A centerless grinding machine is a grinding machine which does not need to adopt the axis location of a workpiece for grinding and mainly comprises a grinding wheel, an adjusting wheel and a workpiece support, wherein the grinding wheel actually plays the role of grinding, the adjusting wheel controls the rotation of the workpiece and the feed speed of the workpiece, and the workpiece support supports the workpiece during grinding. The grinding wheel and the adjusting wheel are driven by a main shaft device and mainly comprise a main shaft and a rolling bearing seat, and the rolling bearing seats on the market are integrally manufactured, so that the bearing hole position in the rolling bearing seat is difficult to deeply process.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a spindle unit and centerless grinder aims at solving the rolling bearing seat an organic whole among the prior art and makes, and it is big to have leaded to the bearing hole site ratio deep processing degree of difficulty among the rolling bearing seat, because domestic present machining ability is limited, and the machining precision of bearing hole site does not reach the required precision of design far away, has just also reduced the technical problem of centerless grinder's machining precision widely.
In order to achieve the above object, an embodiment of the present invention provides a spindle device, including a spindle and a sectional type supporting unit, the spindle is provided with a plurality of step positions and an inclined transition position, the step positions include a front bearing mounting position located at a left end portion of the spindle, and the inclined transition position includes a middle bearing mounting position located at a middle end portion of the spindle and a rear bearing mounting position located at a right end portion of the spindle; the sectional type supporting unit comprises a front supporting unit, a middle supporting unit and a rear supporting unit which are independently arranged, the front supporting unit comprises a front supporting bearing and a front supporting bearing seat, the shape of an inner hole of the front supporting bearing is matched with that of a front bearing mounting position, the front supporting bearing is mounted on the front bearing mounting position, a front bearing mounting hole position in the front supporting bearing seat is matched with the outer diameter of the front supporting bearing, and the front supporting bearing is mounted in the front supporting bearing seat; the middle support unit comprises a middle support bearing and a middle support bearing seat, the shape of an inner hole of the middle support bearing is matched with that of a middle bearing installation position, the middle support bearing is installed on the middle bearing installation position, a middle bearing installation hole position in the middle support bearing seat is matched with the outer diameter of the middle support bearing, and the middle support bearing is installed in the middle support bearing seat; the back supporting unit includes back supporting bearing and back supporting bearing seat, back supporting bearing's hole shape with the shape looks adaptation of back bearing installation position, back supporting bearing installs on the back bearing installation position, back bearing installation hole site in the back supporting bearing seat with back supporting bearing's external diameter looks adaptation, back supporting bearing installs in the back supporting bearing seat.
Optionally, the step further includes a front bearing support position located on the right side of the front bearing installation position, an outer diameter of the front bearing support position is larger than an outer diameter of the front bearing installation position, the front support bearing is installed on the front bearing installation position, a first locking nut is connected to the main shaft through a thread, the first locking nut is screwed on the main shaft and locks the front support bearing on the front bearing installation position, one end of the front support bearing supports the first locking nut, the other end of the front support bearing supports the front bearing support position, the front support bearing is sleeved and fixed on the front support bearing, an outer ring of the front support bearing is in abutting contact with the front support bearing, and an inner ring of the front support bearing is in abutting contact with the front bearing installation position.
Optionally, the middle support bearing is mounted on the middle bearing mounting position, a second locking nut and a third locking nut are connected to the left side and the right side of the main shaft on the middle support bearing in a threaded manner, the second locking nut and the third locking nut are screwed on the main shaft and lock the middle support bearing on the middle bearing mounting position, one end of the middle support bearing abuts against the second locking nut, the other end of the middle support bearing abuts against the third locking nut, the middle support bearing seat is sleeved and fixed on the middle support bearing, an outer ring of the middle support bearing abuts against the middle support bearing seat, and an inner ring of the middle support bearing abuts against the middle bearing mounting position.
Optionally, the back support bearing is installed on the back bearing installation position, the main shaft is in the left and right sides threaded connection of back support bearing has fourth lock nut and fifth lock nut, fourth lock nut with fifth lock nut connects soon on the main shaft and will back support bearing locks on the back bearing installation position, the one end of back support bearing supports and holds fourth lock nut, and the other end supports and holds fifth lock nut, back support bearing frame cover is established and is fixed on the back support bearing, and back support bearing's outer lane with back support bearing frame looks butt contact, back support bearing's inner circle with back bearing installation position looks butt contact.
Optionally, the step further includes a functional component mounting position located at the middle rear end of the spindle, and a guide wheel or a grinding wheel is mounted on the functional component mounting position.
Optionally, the step further includes a functional component abutting position located on the left side of the functional component mounting position, the outer diameter of the functional component abutting position is larger than that of the functional component mounting position, the spindle is located on the functional component mounting position, a backing ring is sleeved on the spindle, and an end cover is in threaded connection with the spindle, is screwed on the spindle, and tightly presses the backing ring on the guide wheel or the grinding wheel, so that the guide wheel or the grinding wheel is locked on the functional component mounting position.
Optionally, oil seals are mounted on the front support bearing, the middle support bearing and the rear support bearing.
Optionally, the front support bearing is an angular contact bearing, and the middle support bearing and the rear support bearing are double-row cylindrical roller bearings.
The embodiment of the utility model provides an in the main shaft device above-mentioned one or more technical scheme have one of following technological effect at least: compared with the prior art, in the main shaft device of the utility model, the sectional type supporting unit comprises a front supporting unit, a middle supporting unit and a rear supporting unit which are independently arranged, and a front bearing mounting hole site in the front supporting bearing seat, a middle bearing mounting hole site in the middle supporting bearing seat and a rear bearing mounting hole site in the rear supporting bearing seat are independent individuals; therefore, compared with the depth of the bearing hole positions in the rolling bearing pedestal on the market, the depth of the separated front bearing mounting hole position, the separated middle bearing mounting hole position and the separated rear bearing mounting hole position is obviously reduced, so that the processing difficulty of the front bearing mounting hole position, the separated middle bearing mounting hole position and the separated rear bearing mounting hole position is greatly reduced, and meanwhile, the processing precision is greatly close to the precision requirement of design, so that the rigidity and the rotation precision of the main shaft are greatly improved.
In order to achieve the above object, another embodiment of the present invention provides a centerless grinding machine, which includes the spindle device.
The embodiment of the utility model provides an above-mentioned one or more technical scheme in the centerless grinder have one of following technological effect at least: compared with the prior art, the utility model discloses among the centerless grinder, used foretell spindle unit, preceding supporting element, well supporting element and back supporting element independent setting, the machining precision of front bearing installation hole site, well bearing installation hole site and back bearing installation hole site is close the required precision of design widely, has promoted the rotation precision of main shaft widely, has improved centerless grinder's machining precision then.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a perspective view of a spindle device and a guide wheel according to an embodiment of the present invention.
Fig. 2 is a perspective view of the spindle unit and the grinding wheel according to the embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a spindle device according to an embodiment of the present invention.
Wherein, in the figures, the respective reference numerals:
1-main shaft 2-step position 21-front bearing mounting position
22-front bearing abutment 23-functional component mounting location 24-functional component abutment
3-inclined transition position 31-middle bearing installation position 32-rear bearing installation position
4-segmented support unit 5-front support unit 51-front support bearing
52-front support bearing seat 53-front bearing mounting hole position 6-middle support unit
61-middle support bearing 62-middle support bearing seat 63-middle bearing mounting hole site
7-rear support unit 71-rear support bearing 72-rear support bearing seat
73-rear bearing mounting hole site 8-first lock nut 81-second lock nut
82-third lock nut 83-fourth lock nut 84-fifth lock nut
85-backing ring 86-end cover 9-guide wheel
91-grinding wheel 10-oil seal
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary and intended to explain the embodiments of the present invention and are not to be construed as limiting the present invention.
In the description of the embodiments of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which is only for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as fixed or detachable connections or as an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.
In one embodiment of the present invention, as shown in fig. 1 to 3, a spindle device includes a spindle 1 and a sectional type support unit 4.
The main shaft 1 is provided with a plurality of step positions 2 and an inclined transition position 3, the step positions 2 comprise front bearing installation positions 21 located at the left end part of the main shaft 1, and the inclined transition position 3 comprises a middle bearing installation position 31 located at the middle end part of the main shaft 1 and a rear bearing installation position 32 located at the right end part of the main shaft 1.
Further, the segmental support unit 4 includes a front support unit 5, a middle support unit 6, and a rear support unit 7, which are independently provided.
Specifically, the front support unit 5 includes a front support bearing 51 and a front support bearing seat 52, the shape of an inner hole of the front support bearing 51 is matched with the shape of the front bearing installation position 21, the front support bearing 51 is installed on the front bearing installation position 21, a front bearing installation hole 53 in the front support bearing seat 52 is matched with the outer diameter of the front support bearing 51, and the front support bearing 51 is installed in the front support bearing seat 52.
Further, the middle support unit 6 comprises a middle support bearing 61 and a middle support bearing seat 62, the inner hole shape of the middle support bearing 61 is matched with the shape of the middle bearing installation position 31, the middle support bearing 61 is installed on the middle bearing installation position 31, a middle bearing installation hole position 63 in the middle support bearing seat 62 is matched with the outer diameter of the middle support bearing 61, and the middle support bearing 61 is installed in the middle support bearing seat 62.
Further, the rear support unit 7 includes a rear support bearing 71 and a rear support bearing seat 72, the inner hole shape of the rear support bearing 71 is matched with the shape of the rear bearing installation position 32, the rear support bearing 71 is installed on the rear bearing installation position 32, the rear bearing installation hole 73 in the rear support bearing seat 72 is matched with the outer diameter of the rear support bearing 71, and the rear support bearing 71 is installed in the rear support bearing seat 72.
The utility model discloses in, the bearing hole site of traditional centerless grinder antifriction bearing headstock is more the deep-processing degree of difficulty big, and the bearing hole seat after reforming transform now changes into each bearing hole site and all is an independent individuality, and what make it the degree of depth of bearing frame hole site become is a lot of less than traditional, makes the processing degree of difficulty greatly reduced of bearing frame hole site, and the machining precision can obviously promote.
In another embodiment of the present invention, as shown in fig. 3, the step 2 of the spindle device further includes a front bearing supporting portion 22 located on the right side of the front bearing mounting portion 21, the outer diameter of the front bearing supporting portion 22 is greater than the outer diameter of the front bearing mounting portion 21, and the spindle 1 is threadedly connected with a first locking nut 8.
Specifically, the front support bearing 51 is mounted on the front bearing mounting position 21, the first locking nut 8 is screwed on the main shaft 1 and locks the front support bearing 51 on the front bearing mounting position 21, one end of the front support bearing 51 abuts against the first locking nut 8, and the other end abuts against the front bearing abutting position 22.
Further, the front support bearing seat 52 is sleeved and fixed on the front support bearing 51, and an outer ring of the front support bearing 51 contacts against the front support bearing seat 52, and an inner ring of the front support bearing 51 contacts against the front bearing installation site 21.
In another embodiment of the present invention, as shown in fig. 3, the spindle 1 of the spindle device is threadedly connected with a second lock nut 81 and a third lock nut 82 at the left and right sides of the middle support bearing 61.
Specifically, the middle support bearing 6 is mounted on the middle bearing mounting position 31, the second lock nut 81 and the third lock nut 82 are screwed on the main shaft 1 and lock the middle support bearing 61 on the middle bearing mounting position 31, one end of the middle support bearing 61 abuts against the second lock nut 81, and the other end abuts against the third lock nut 82.
Further, the middle support bearing seat 62 is sleeved and fixed on the middle support bearing 61, and the outer ring of the middle support bearing 61 contacts against the middle support bearing seat 62, and the inner ring of the middle support bearing 61 contacts against the middle bearing installation position 31.
In another embodiment of the present invention, as shown in fig. 3, the main shaft 1 of the main shaft device is threadedly connected with a fourth lock nut 83 and a fifth lock nut 84 at both left and right sides of the rear support bearing 71.
Specifically, the rear support bearing 71 is mounted on the rear bearing mounting position 32, the fourth lock nut 83 and the fifth lock nut 84 are screwed on the main shaft 1 and lock the rear support bearing 71 on the rear bearing mounting position 32, one end of the rear support bearing 71 abuts against the fourth lock nut 83, and the other end abuts against the fifth lock nut 84.
Further, the rear support bearing seat 72 is sleeved and fixed on the rear support bearing 71, an outer ring of the rear support bearing 71 is in contact with the rear support bearing seat 72, and an inner ring of the rear support bearing 71 is in contact with the rear bearing installation site 32.
In another embodiment of the present invention, as shown in fig. 1 to 3, the step 2 of the spindle device further includes a functional component mounting position 23 located at the rear end of the spindle 1, and the functional component mounting position 23 is provided with a guide wheel 9 or a grinding wheel 91.
The guide wheel of the centerless grinder rolling bearing spindle structure and the bearing of the grinding wheel bearing seat are combined into one guide wheel or grinding wheel seat through three independent bearing seats, and the two connection and fixing modes are adopted.
In addition, one is an independent bearing seat accessory and the end face fixing mode of the bearing seat assembly, and the other is a fixing mode of connecting the bearing seat accessory and the bottom of the bearing seat assembly.
Further, the step 2 further includes a functional component abutting position 24 located on the left side of the functional component mounting position 23, the outer diameter of the functional component abutting position 24 is larger than the outer diameter of the functional component mounting position 23, the spindle 1 is located on the functional component mounting position 23 and sleeved with a backing ring 85 and connected with an end cover 86 in a threaded manner, and the end cover 86 is screwed on the spindle 1 and presses the backing ring 85 onto the guide wheel 9 or the grinding wheel 91, so that the guide wheel 9 or the grinding wheel 91 is locked on the functional component 23 mounting position.
In another embodiment of the present invention, as shown in fig. 3, the front support bearing 51, the middle support bearing 61 and the rear support bearing 71 of the spindle device are all provided with oil seals 10.
In another embodiment of the present invention, the front support bearing 51 of the spindle device is an angular contact bearing, and the middle support bearing 61 and the rear support bearing 71 are double-row cylindrical roller bearings.
In another embodiment of the present invention, a centerless grinding machine includes the spindle device described above.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A spindle device comprising a spindle and a segmented support unit, characterized in that: the main shaft is provided with a plurality of step positions and inclined transition positions, the step positions comprise front bearing mounting positions located at the left end part of the main shaft, and the inclined transition positions comprise middle bearing mounting positions located at the middle end part of the main shaft and rear bearing mounting positions located at the right end part of the main shaft; the sectional type supporting unit comprises a front supporting unit, a middle supporting unit and a rear supporting unit which are independently arranged, the front supporting unit comprises a front supporting bearing and a front supporting bearing seat, the shape of an inner hole of the front supporting bearing is matched with that of a front bearing mounting position, the front supporting bearing is mounted on the front bearing mounting position, a front bearing mounting hole position in the front supporting bearing seat is matched with the outer diameter of the front supporting bearing, and the front supporting bearing is mounted in the front supporting bearing seat; the middle support unit comprises a middle support bearing and a middle support bearing seat, the shape of an inner hole of the middle support bearing is matched with that of a middle bearing installation position, the middle support bearing is installed on the middle bearing installation position, a middle bearing installation hole position in the middle support bearing seat is matched with the outer diameter of the middle support bearing, and the middle support bearing is installed in the middle support bearing seat; the back supporting unit includes back supporting bearing and back supporting bearing seat, back supporting bearing's hole shape with the shape looks adaptation of back bearing installation position, back supporting bearing installs on the back bearing installation position, back bearing installation hole site in the back supporting bearing seat with back supporting bearing's external diameter looks adaptation, back supporting bearing installs in the back supporting bearing seat.
2. The spindle assembly of claim 1, wherein: the step position further comprises a front bearing abutting position located on the right side of the front bearing installation position, the outer diameter of the front bearing abutting position is larger than that of the front bearing installation position, the front support bearing is installed on the front bearing installation position, a first locking nut is connected to the main shaft in a threaded mode, the first locking nut is screwed on the main shaft and locks the front support bearing on the front bearing installation position, one end of the front support bearing abuts against the first locking nut, the other end of the front support bearing abuts against the front bearing abutting position, the front support bearing is sleeved and fixed on the front support bearing, the outer ring of the front support bearing is in abutting contact with the front support bearing, and the inner ring of the front support bearing is in abutting contact with the front bearing installation position.
3. The spindle assembly of claim 1, wherein: the middle supporting bearing is installed on the middle bearing installation position, a second locking nut and a third locking nut are connected to the left side and the right side of the middle supporting bearing through threads of the main shaft, the second locking nut and the third locking nut are screwed on the main shaft and lock the middle supporting bearing on the middle bearing installation position, one end of the middle supporting bearing abuts against the second locking nut, the other end of the middle supporting bearing abuts against the third locking nut, the middle supporting bearing seat is sleeved and fixed on the middle supporting bearing, the outer ring of the middle supporting bearing abuts against and contacts with the middle supporting bearing seat, and the inner ring of the middle supporting bearing abuts against and contacts with the middle bearing installation position.
4. The spindle assembly of claim 1, wherein: the rear support bearing is installed on the rear bearing installation position, the main shaft is in the left and right sides threaded connection of rear support bearing has fourth lock nut and fifth lock nut, fourth lock nut with fifth lock nut connects soon on the main shaft and will rear support bearing locks on the rear bearing installation position, rear support bearing's one end supports and holds fourth lock nut, and the other end supports and holds fifth lock nut, rear support bearing frame cover is established and is fixed on the rear support bearing, and rear support bearing's outer lane with rear support bearing frame looks butt contact, rear support bearing's inner circle with rear bearing installation position looks butt contact.
5. The spindle device according to any one of claims 1 to 4, wherein: the step position further comprises a functional component mounting position located at the middle rear end part of the main shaft, and a guide wheel or a grinding wheel is mounted on the functional component mounting position.
6. The spindle assembly of claim 5, wherein: the step position further comprises a functional component abutting position located on the left side of the functional component mounting position, the outer diameter of the functional component abutting position is larger than that of the functional component mounting position, the spindle is located on the functional component mounting position and is sleeved with a backing ring and connected with an end cover in a threaded mode, the end cover is screwed on the spindle and tightly presses the backing ring on the guide wheel or the grinding wheel, and therefore the guide wheel or the grinding wheel is locked on the functional component mounting position.
7. The spindle device according to any one of claims 1 to 4, wherein: and oil seals are arranged on the front support bearing, the middle support bearing and the rear support bearing.
8. The spindle device according to any one of claims 1 to 4, wherein: the front support bearing is an angular contact bearing, and the middle support bearing and the rear support bearing are double-row cylindrical roller bearings.
9. A centerless grinding machine, characterized by: comprising a spindle arrangement according to any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921589100.7U CN210819079U (en) | 2019-09-23 | 2019-09-23 | Spindle device and centerless grinding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921589100.7U CN210819079U (en) | 2019-09-23 | 2019-09-23 | Spindle device and centerless grinding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210819079U true CN210819079U (en) | 2020-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921589100.7U Active CN210819079U (en) | 2019-09-23 | 2019-09-23 | Spindle device and centerless grinding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210819079U (en) |
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2019
- 2019-09-23 CN CN201921589100.7U patent/CN210819079U/en active Active
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