CN210475708U - Novel saw head main shaft device - Google Patents
Novel saw head main shaft device Download PDFInfo
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- CN210475708U CN210475708U CN201921411770.XU CN201921411770U CN210475708U CN 210475708 U CN210475708 U CN 210475708U CN 201921411770 U CN201921411770 U CN 201921411770U CN 210475708 U CN210475708 U CN 210475708U
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- bearing
- main shaft
- saw head
- oil
- main
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Abstract
The utility model provides a novel saw head main shaft device. Novel saw head main shaft device includes: a second main shaft; the second front bearing and the second rear bearing are respectively arranged on two sides of the surface of the second main shaft; a second main bearing housing disposed on the second front bearing outer surface and the second rear bearing outer surface; and the second bearing cover is arranged on one side of the second bearing box and is positioned on the second main shaft. The utility model provides a novel saw head main shaft device has and avoids the bearing early inefficacy for the life of bearing has increased several times, because thin oil heat-sinking capability is superior to lubricating grease, the mobility of thin oil in the bearing box is very good, more does benefit to the heat dissipation, and non-contact is sealed to have avoided the friction again and has generated heat, thereby makes bearing, main shaft temperature rise reduce more than 20 ℃, operates steadily, and the fault rate of saw head reduces, has improved the operating efficiency of flying the saw.
Description
Technical Field
The utility model relates to a longitudinal welding steel pipe equipment technical field especially relates to a novel saw head main shaft device.
Background
After the straight welded steel pipe is subjected to the forming, welding and sizing processes, the straight welded steel pipe is subjected to fixed-length sawing, the equipment for realizing the fixed-length sawing process is a computer fixed-length flying saw, and the core mechanical part for realizing the sawing by the computer fixed-length flying saw is a saw head, which is shown in attached drawings 1, 2 and 3.
The steel pipe 1 after being formed, welded and sized continuously moves forwards at a constant speed by being fixed below a saw head 3 which can swing up and down on a flying saw trolley 2, and the steel pipe with infinite length is cut into a plurality of meters, usually 4-6 meters, under the measurement and control of an electric flying saw control system. The cutting process is realized by that the saw head swings downwards by the action of actuating mechanism force such as a cylinder 4 or an oil cylinder and the like, and the saw blade 5 which rotates at high speed on the saw head 3 swings downwards. The saw blade is clamped and fixed on a first main shaft 9 of the saw blade by a saw blade seat 6, a saw blade clamping plate 7, a shaft end nut 8 and a belt wheel end of a first rear bearing 11, the main shaft of the saw blade is supported in a first main bearing box 12 of a saw arm through a saw blade end of a first front bearing 10 and a belt wheel end of a first rear bearing 11, the outer end of the main shaft of the saw blade is sealed by a first bearing cover 13, the diameter of the flying saw blade 5 is phi 500 to phi 1200, the rotating speed of the flying saw blade can be up to 4700 r/min, and the diameter of the saw blade 5 is phi 500.
The first main shaft 9 of the saw blade needs to do swinging motion around a saw arm shaft, namely sawing, besides high-speed rotating motion, and needs to do longitudinal motion along with the flying saw trolley 2, namely tracking, a first front bearing 10 of the old flying saw usually adopts an angular contact ball bearing, a first rear bearing 11 adopts a radial ball bearing, lubricating grease is filled in a first main bearing box 12, the first main bearing box is commonly called grease, and a first bearing cover and the first main shaft 9 are sealed by a wool felt ring 14, as shown in the attached figure 4.
When the first main shaft 9 rotates at a high speed, the grease on the bearing is extruded out of the raceway by the bearing rolling elements and generates heat under a strong stirring action, so that the bearing is easily heated too high, the bearing is easily scalded, and the bearing is easily damaged due to failure and burning of the bearing caused by lack of the grease on the rolling elements.
Therefore, there is a need to provide a new saw head spindle device to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
The utility model provides a novel saw head main shaft device has solved the easy lack of oil of bearing and has caused the bearing early inefficacy, problem that life is short.
In order to solve the technical problem, the utility model provides a novel saw head main shaft device includes: a second main shaft; the second front bearing and the second rear bearing are respectively arranged on two sides of the surface of the second main shaft; a second main bearing housing disposed on the second front bearing outer surface and the second rear bearing outer surface; the second bearing cover is arranged on one side of the second bearing box and is positioned on the second main shaft; the bearing inner ring is arranged on the surface of the second main shaft; an oil ring disposed on the second main shaft; the empty groove is formed in the second bearing cover; the small hole is formed in the second bearing cover.
Preferably, the second front bearing is a cylindrical roller bearing, and the second front bearing is disposed between the second main shaft and the second main bearing housing.
Preferably, the bearing inner ring is located between the inner surface of the second front bearing and the second main shaft, and the bearing inner ring and the second main shaft are of an integrally formed structure.
Preferably, the oil ring is located between the second main shaft and the second bearing cover, and a gap is reserved between the oil ring and the second bearing cover.
Preferably, the hollow groove is formed around an outer surface of the oil ring, and an interior of the hollow groove and an interior of the small hole communicate with each other.
Preferably, the inside of the small hole and the inside of the second main bearing housing communicate with each other, and the inside of the second main bearing housing stores # 20 machine oil.
Compared with the prior art, the utility model provides a novel saw head main shaft device has following beneficial effect:
the utility model provides a novel saw head main shaft device, the inside fluid of dead slot flows back to the inside of second bearing box by the aperture, thereby the sealed thin oil lubrication of non-contact of saw head has been realized, it is lubricated reliable, because the thin oil mobility is good, the rolling element is infiltrated all the time to fluid, the bearing can not lack of oil, thereby the bearing early failure has been avoided, make the life of bearing increase several times, because the thin oil heat-sinking capability is superior to lubricating grease, the mobility of thin oil in the bearing box is very good, more do benefit to the heat dissipation, the non-contact is sealed to have avoided the friction again to generate heat, thereby make the bearing, the main shaft temperature rise reduces more than 20 ℃, the operation is steady, the fault rate of saw head reduces, the operating efficiency of flying saw has been improved.
Drawings
Fig. 1 is a schematic structural view of a part of a saw head in the prior art provided by the present invention;
FIG. 2 is a side view of the ensemble shown in FIG. 1;
FIG. 3 is a schematic structural view of the saw head portion shown in FIG. 1;
FIG. 4 is a schematic structural view of a portion of the seal structure of the saw head portion shown in FIG. 3;
fig. 5 is a schematic structural view of a preferred embodiment of the novel saw head spindle device provided by the present invention;
FIG. 6 is a schematic structural view of a portion of the second spindle shown in FIG. 5;
FIG. 7 is a schematic structural view of a portion of a sealing structure of the portion of the second saw head shown in FIG. 5;
fig. 8 is an enlarged view of a portion a shown in fig. 7.
Reference numbers in the figures: 1. steel pipe, 2, flying saw dolly, 3, saw head, 4, cylinder, 5, saw blade, 6, saw blade seat, 7, saw blade splint, 8, shaft end nut, 9, first main shaft, 10, first front bearing, 11, rear bearing, 12, main bearing box, 13, first bearing cover, 14, wool felt ring, 91, second main shaft, 101, second front bearing, 111, second rear bearing, 121, second main bearing box, 131, second bearing cover, 15, bearing inner ring, 16, oil ring, 17, empty slot, 18, aperture.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and embodiments.
Please refer to fig. 5, fig. 6, fig. 7 and fig. 8, wherein fig. 5 is a schematic structural diagram of a preferred embodiment of the saw head spindle device according to the present invention; FIG. 6 is a schematic structural view of a portion of the second spindle shown in FIG. 5; FIG. 7 is a schematic structural view of a portion of a sealing structure of the portion of the second saw head shown in FIG. 5; fig. 8 is an enlarged view of a portion a shown in fig. 7.
A novel saw head spindle device comprises: a second main shaft 91; a second front bearing 101 and a second rear bearing 111, wherein the second front bearing 101 and the second rear bearing 111 are respectively arranged at two sides of the surface of the second main shaft 91; a second main bearing housing 121, wherein the second main bearing housing 121 is disposed on an outer surface of the second front bearing 101 and an outer surface of the second rear bearing 111; a second bearing cover 131, wherein the second bearing cover 131 is arranged on one side of the second bearing box 121 and is positioned on the second main shaft 91; a bearing inner ring 15, the bearing inner ring 15 being provided on a surface of the second main shaft 91; an oil ring 16, the oil ring 16 being provided on the second main shaft 91; the empty groove 17, the empty groove 17 is opened on the second bearing cover 131; and the small hole 18 is formed in the second bearing cover 131, and the small hole 18 is formed in the second bearing cover 131.
In this embodiment, the second front bearing 101 is a cylindrical roller bearing, which has the advantage of bearing a large radial load, and utilizes the characteristic that the second front bearing does not bear an axial force to enable the second main shaft 91 to freely extend and retract in the axial direction, thereby avoiding additional stress caused by manufacturing errors and thermal expansion and contraction.
Meanwhile, in order to improve the rotation precision of the second main shaft 91, the bearing inner ring 15 and the second main shaft 91 are integrated and finely ground, and the second rear bearing 11 is a radial ball bearing, so that the second main shaft 91 is reliably and axially positioned.
The second bearing box 121 is filled with 20# mechanical oil, the oil level reaches the middle part of the rolling element at the lowest position, an oil ring 16 is arranged between the second main shaft 91 and the second bearing cover 131, a gap is formed between the oil ring 16 and the second bearing cover 131, and when the second main shaft 91 rotates at a high speed, the rolling element brings the oil to a raceway, so that the bearing is reliably lubricated.
On the other hand, the oil droplets that may overflow the second bearing box 121 through the gap are thrown into the empty groove 17 of the second bearing cover 131 by the oil ring 16 due to the centrifugal force generated by the high-speed rotation of the second main shaft 91, and the oil in the empty groove 17 flows back into the second bearing box 121 through the small hole 18, so that the non-contact sealed thin oil lubrication of the saw head is realized, and the lubrication is reliable.
The thin oil has good fluidity, so the oil is always soaked in the rolling body, and the bearing does not lack oil, thereby avoiding the early failure of the bearing, prolonging the service life of the bearing by multiple times, and because the heat dissipation capability of the thin oil is superior to that of lubricating grease, the thin oil has very good fluidity in a bearing box, and is more beneficial to heat dissipation.
The non-contact sealing avoids friction heating, so that the temperature rise of the bearing and the main shaft is reduced by more than 20 ℃, the operation is stable, the noise is reduced by more than 20db, the fault rate of the saw head is greatly reduced, and the operation efficiency of the flying saw is improved.
The second front bearing 101 is a cylindrical roller bearing, and the second front bearing 101 is disposed between the second main shaft 91 and the second main bearing housing 121.
The bearing inner ring 15 is located between the inner surface of the second front bearing 101 and the second main shaft 91, and the bearing inner ring 15 and the second main shaft 91 are of an integrally formed structure.
The oil ring 16 is located between the second main shaft 91 and the second bearing cover 131, and a gap is reserved between the oil ring 16 and the second bearing cover 131.
The empty groove 17 is surrounded on the outer surface of the oil ring 16, and the inside of the empty groove 17 and the inside of the small hole 18 communicate with each other.
The inside of the small hole 18 and the inside of the second main bearing housing 121 communicate with each other, and the inside of the second main bearing housing 121 stores # 20 machine oil.
The utility model provides a novel saw head main shaft device's theory of operation as follows:
1. the second front bearing 101 is a cylindrical roller bearing, has the advantage of bearing large radial load, and utilizes the characteristic that the second front bearing does not bear axial force to enable the second main shaft 91 to freely stretch and retract axially, thereby avoiding additional stress caused by manufacturing errors and expansion with heat and contraction with cold, and simultaneously improving the rotation precision of the second main shaft 91;
2. the bearing inner ring 15 and the second main shaft 91 are integrated and finely ground, the second rear bearing 11 is a radial ball bearing, so that the second main shaft 91 is reliably and axially positioned, the second bearing box 121 is filled with 20# mechanical oil, and the oil level reaches the middle part of the rolling body at the lowest position;
3. an oil ring 16 is arranged between the second main shaft 91 and the second bearing cover 131, a gap is formed between the oil ring 16 and the second bearing cover 131, when the second main shaft 91 rotates at a high speed, the rolling bodies bring oil onto a raceway so as to reliably lubricate the bearing, and oil drops which possibly overflow the second bearing box 121 through the gap are thrown into a hollow groove 17 on the second bearing cover 131 by the oil ring 16 due to centrifugal force generated by the high-speed rotation of the second main shaft 91;
4. the oil in the empty groove 17 flows back to the inside of the second bearing box 121 through the small hole 18, so that the non-contact sealing thin oil lubrication of the saw head is realized, the lubrication is reliable, the oil is soaked in the rolling bodies all the time due to good fluidity of the thin oil, the bearing cannot lack oil, the early failure of the bearing is avoided, the service life of the bearing is prolonged by multiple times, the heat dissipation capacity of the thin oil is superior to that of lubricating grease, the fluidity of the thin oil in the bearing box is very good, the heat dissipation is facilitated, the non-contact sealing is realized, the friction heating is avoided, the temperature rise of the bearing and a main shaft is reduced by more than 20 ℃, the operation is stable, the noise is reduced by more than 20db, the fault rate of the saw head is greatly reduced, and.
Compared with the prior art, the utility model provides a novel saw head main shaft device has following beneficial effect:
the oil in the empty groove 17 flows back to the inside of the second bearing box 121 through the small hole 18, so that the non-contact sealing thin oil lubrication of the saw head is realized, the lubrication is reliable, the oil infiltrates the rolling bodies all the time due to good fluidity of the thin oil, the bearing cannot lack oil, the early failure of the bearing is avoided, the service life of the bearing is prolonged by multiple times, the heat dissipation capacity of the thin oil is superior to that of lubricating grease, the fluidity of the thin oil in the bearing box is very good, the heat dissipation is facilitated, the non-contact sealing is realized, the friction heating is avoided, the temperature rise of the bearing and a main shaft is reduced by more than 20 ℃, the operation is stable, the fault rate of the saw head is reduced, and the operation efficiency.
The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.
Claims (6)
1. A novel saw head spindle device is characterized by comprising:
a second main shaft;
the second front bearing and the second rear bearing are respectively arranged on two sides of the surface of the second main shaft;
a second main bearing housing disposed on the second front bearing outer surface and the second rear bearing outer surface;
the second bearing cover is arranged on one side of the second bearing box and is positioned on the second main shaft;
the bearing inner ring is arranged on the surface of the second main shaft;
an oil ring disposed on the second main shaft;
the empty groove is formed in the second bearing cover;
the small hole is formed in the second bearing cover.
2. A novel saw head spindle arrangement according to claim 1, wherein the second front bearing is a cylindrical roller bearing and a second front bearing is provided between the second main spindle and the second main bearing housing.
3. The novel saw head spindle device according to claim 1, wherein the inner bearing ring is located between the inner surface of the second front bearing and the second spindle, and the inner bearing ring and the second spindle are of an integrally formed structure.
4. The new saw head spindle assembly of claim 1 wherein said oil ring is located between said second spindle and said second bearing cap and a gap is reserved between said oil ring and said second bearing cap.
5. The new saw head spindle assembly as claimed in claim 1, wherein said hollow surrounds an outer surface of said oil ring and an interior of said hollow is in communication with an interior of said aperture.
6. A novel saw head spindle assembly as claimed in claim 5, wherein the interior of said aperture is interconnected with the interior of said second main bearing housing, and wherein the interior of the second main bearing housing stores # 20 mechanical oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921411770.XU CN210475708U (en) | 2019-08-28 | 2019-08-28 | Novel saw head main shaft device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921411770.XU CN210475708U (en) | 2019-08-28 | 2019-08-28 | Novel saw head main shaft device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210475708U true CN210475708U (en) | 2020-05-08 |
Family
ID=70537925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921411770.XU Expired - Fee Related CN210475708U (en) | 2019-08-28 | 2019-08-28 | Novel saw head main shaft device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210475708U (en) |
-
2019
- 2019-08-28 CN CN201921411770.XU patent/CN210475708U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200508 Termination date: 20200828 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |