CN210115471U - Interior cold charge in place boring bar middle part is put - Google Patents
Interior cold charge in place boring bar middle part is put Download PDFInfo
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- CN210115471U CN210115471U CN201822259657.6U CN201822259657U CN210115471U CN 210115471 U CN210115471 U CN 210115471U CN 201822259657 U CN201822259657 U CN 201822259657U CN 210115471 U CN210115471 U CN 210115471U
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- boring bar
- sleeve
- inner cooling
- shaft
- rotating shaft
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Abstract
The utility model discloses an interior cold charge device of placing boring bar middle part in, including interior cold connecting axle, rotation axis, connection support bearing housing, interior cold axle, outer terminal surface flange, connecting axle, interior cold connecting axle one end is connected with interior cold axle after passing the broach piston, and its other end and coupling joint, this part irrotational, interior cold axle is connected with connection support bearing housing, the rotation axis passes through the support sleeve and sets up in the boring bar, and boring bar front end and through broach mechanism and cutter connection are worn to establish to its one end, and its other end setting is in connection support bearing housing, and is equipped with the bearing group that a plurality of bearings are constituteed between connection support bearing housing and the rotation axis, separates through the spacer between the bearing group. The device has compact structure, reasonable layout and good use effect.
Description
Technical Field
The utility model belongs to the technical field of machinery, especially, relate to an interior cold charge device of placing boring bar middle part in.
Background
With the increase of the machining requirements of parts and the progress of cutters, the requirement of a machine tool to have a cutter internal cooling function in machining is an urgent need and realizable technology. But because of the characteristics of different machine tools and different structures, the realization of the inner cooling structure is different. Under the conditions of structural limitation, movable main shaft (namely a boring bar), a built-in lead screw of the boring bar and high rotating speed of the main shaft, the realization of inner cooling has great difficulty.
The existing boring bar inner cooling mechanism cannot eliminate the deflection of a rotating shaft due to poor support caused by the processing error of a main shaft inner hole; the rotating shaft and the inner cooling shaft are not concentric, so that the sealing element or the inner cooling shaft is easy to wear; the rotation of the long shaft for internal cooling limits the increase of the rotating speed, and the internal cooling can not be discharged after leakage, thereby causing the problems of oil-water mixing and the like.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides an interior cold charge device of boring bar middle part is placed in to interior, compact structure, rationally distributed, excellent in use effect.
For the purpose of realizing, the utility model adopts the following technical scheme: an internal cooling device arranged in the middle of a boring bar comprises an internal cooling connecting shaft, a rotating shaft, a connecting and supporting bearing sleeve, an internal cooling shaft, an outer end face flange and a connecting shaft, wherein one end of the internal cooling connecting shaft penetrates through a push broach piston and then is connected with the internal cooling shaft, the other end of the internal cooling connecting shaft is connected with a pipe joint, the internal cooling shaft does not rotate, the internal cooling shaft is connected with the connecting and supporting bearing sleeve, the rotating shaft is arranged in the boring bar through the supporting sleeve, one end of the rotating shaft penetrates through the front end of the boring bar and is connected with a cutter through a broach mechanism, the other end of the rotating shaft is arranged in the connecting and supporting bearing sleeve, a bearing set consisting of a plurality of bearings is arranged between the connecting and supporting bearing sleeve and the rotating shaft, the bearing sets are separated through a spacer sleeve, the bearing sets can bear push broach force and have high rotation precision, the end face flanges are respectively arranged on two sides of, The inner cooling channel is arranged between the inner cooling shaft and the rotating shaft, and the end surface of the inner cooling shaft is provided with a bulge inserted in the rotating shaft.
In the technical scheme, the support sleeves are provided with at least two support sleeves, namely a left support sleeve and a right support sleeve, the left support sleeve is connected with the rotating shaft through the locking nut and the spacer sleeve, one surface of the right support sleeve is in contact with one surface of the bearing set through the end face flange, and the other surface of the right support sleeve is fixed through the step arranged on the rotating shaft.
In the technical scheme, be equipped with a plurality of evenly distributed's recess on the outer circumference of support cover, be equipped with an adjusting device in every recess, adjusting device includes that the spring, adjustment pad, the sphere that fold that set up from inside to outside support, it is compression state to fold the spring, is equipped with the sealing member between sphere support and the recess inner wall.
In the technical scheme, a plurality of anti-leakage sealing rings are arranged between the right support sleeve and the boring rod.
In the technical scheme, at least two leakage-proof sealing rings are arranged between the protrusion and the inner wall of the rotating shaft, and end face sealing is arranged between the end face of the rotating shaft and the inner end face flange.
In the technical scheme, a plurality of guide channels which are uniformly distributed are arranged in the boring rod, each guide channel comprises a radial channel and an axial channel which are communicated, one end of each axial channel extends to the end of the boring rod, the other end of each axial channel is communicated with the corresponding radial channel, one end of each radial channel extends to the outer wall of the boring rod and is sealed, and the other end of each radial channel extends to a gap between a connecting support bearing sleeve and an inner hole of the boring rod in the boring rod.
In the technical scheme, an outer sleeve and an outer sleeve end face flange are arranged at the head of the push broach piston, a bearing is arranged between the outer sleeve and the push broach piston, the outer sleeve end face flange is arranged on one side of the outer sleeve, an outer sleeve sealing piece is arranged between the outer sleeve and the inner wall of the boring rod, an outer sleeve sealing ring is arranged between the outer sleeve end face flange and the push broach piston, and a push broach piston sealing piece is arranged between the inner hole of the push broach piston and the outer circle of the inner cooling connecting shaft.
In the technical scheme, the inner cooling connecting shaft is connected with the supporting seat outside the boring bar, and the end part of the inner cooling connecting shaft is provided with the pipe joint.
The invention has the beneficial effects that: the device has compact structure, the adjusting device is arranged on the processing error of the inner hole of the main shaft, the discharge channel is designed for small amount of leakage, the slender inner cooling connecting shaft does not need to rotate through the structural design and forms a whole with the inner ring and the outer ring of the bearing group to ensure the coaxiality of the inner cooling shaft and the rotating shaft, and the problem that the inner cooling function is difficult to realize is well solved.
Drawings
Fig. 1 is a schematic view of the use structure of the present invention.
Fig. 2 is a schematic view of a part of the structure of the present invention.
Fig. 3 is an enlarged view of a in fig. 2.
Fig. 4 is an enlarged view of B in fig. 2.
Wherein: 1. the inner cooling device comprises an inner cooling connecting shaft, 2. a rotating shaft, 3. a connecting and supporting bearing sleeve, 4. an inner cooling shaft, 5. an outer end face flange, 6. an inner cooling connecting shaft head, 7. a left supporting sleeve, 8. a right supporting sleeve, 9. a bearing group, 10. a left end face flange, 11. an inner end face flange, 12. an inner cooling channel, 13. a locking nut, 14. a spacer bush, 15. a stack spring, 16. an adjusting pad, 17. a spherical support, 18. a sealing element, 19. a sealing ring, 20. a leakage-proof sealing ring, 21. an end face seal, 22. a lead-out channel, 23. an outer sleeve, 24. an outer sleeve end face flange, 25. a bearing, 26. an outer sleeve sealing element, 27. a boring bar, 28. a push broach piston, 29. a supporting seat, 30. a pipe joint, 31. lubricating grease, 32.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 4, an internal cooling device built in the middle of a boring bar 27 comprises an internal cooling connecting shaft 1, a rotating shaft 2, a connecting and supporting bearing sleeve 3, an internal cooling shaft 4 and an outer end face flange 5, wherein one end of the internal cooling connecting shaft 1 passes through a push broach piston 28 and then is connected with the internal cooling shaft 4 through an internal cooling connecting shaft head 6 (the internal cooling connecting shaft head 6 and the internal cooling connecting shaft 1 are welded into a whole), the internal cooling shaft 4 is connected with the connecting and supporting bearing sleeve 3, the rotating shaft 2 is arranged in the boring bar 27 through a left supporting sleeve 7 and a right supporting sleeve 8, one end of the rotating shaft penetrates through the front end of the boring bar 27 and is connected with a cutter through a broach mechanism and rotates synchronously with the cutter and the boring bar, the other end of the rotating shaft is arranged in the connecting and supporting bearing sleeve 3, a bearing group 9 consisting of a plurality of bearings is arranged between the connecting and supporting bearing sleeve 3 and the rotating shaft 2, the bearing groups 9 are, the two sides of the bearing group 9 are respectively provided with a left end face flange 10 and an outer end face flange 5, one end of the rotating shaft 2 close to the inner cooling shaft 4 is provided with an inner end face flange 11, the middles of the inner cooling connecting shaft 1, the inner cooling shaft 4 and the rotating shaft 2 are provided with communicated inner cooling channels 12, and the end face of the inner cooling shaft 4 is provided with a bulge inserted in the rotating shaft 2. The bearing group 9 is used for bearing the cutter pushing force and supporting the front end of the inner-cooling connecting shaft 1, a group of three 60-degree-angle lead screw bearings is selected, two ends of the bearing group are pre-tightened by the left end face flange 10 and the outer end face flange 5, the middle of the bearing group is pre-tightened by a spacer bush, and the bearing group is lubricated by grease.
In the technical scheme, the left support sleeve 7 is connected with the rotating shaft 2 through the locking nut 13 and the spacer bush, one surface of the right support sleeve 8 is in contact with one surface of the bearing group 9 through the end face flange plate, and the other surface of the right support sleeve 8 is fixed through the step arranged on the rotating shaft 2. The lock nut 13 and the spacer fix the left support sleeve 7 and rotate together with the rotary shaft 2, and the step and the end flange fix the right support sleeve 8 and rotate together with the rotary shaft 2.
In the technical scheme, a plurality of uniformly distributed grooves are formed in the outer circumferences of the left support sleeve 7 and the right support sleeve 8, an adjusting device is arranged in each groove, each adjusting device comprises a folding spring 15, an adjusting pad 16 and a spherical support 17 which are arranged from inside to outside, the folding spring 15 is in a compression state, and a sealing element 18 is arranged between the spherical support 17 and the inner wall of each groove. 3, 4, 6, etc. can be arranged as required to the adjusting device, be equivalent to a plurality of piston elastic supports, reach through adjusting pad 16 and give the suitable pretension of spring stack and can eliminate the processing error in certain extent.
In the above technical solution, a plurality of sealing rings 19 are arranged between the right support sleeve 8 and the boring bar 27.
In the above technical scheme, at least two leakage-proof seal rings 20 are arranged between the protrusion and the inner wall of the rotating shaft 2, an end face seal 21 is arranged between the end face of the rotating shaft 2 and the inner end face flange 11, and lubricating grease 31 is arranged between the leakage-proof seal rings 20.
In the above technical solution, a plurality of evenly distributed guiding channels 22 are arranged in the boring bar 27, and include a radial channel and an axial channel which are communicated with each other, one end of the axial channel extends to the end of the boring bar 27, the other end of the axial channel is communicated with the radial channel, one end of the radial channel extends to the outer wall of the boring bar 27 and is blocked, and the other end of the radial channel extends to the gap between the connecting support bearing sleeve 3 inside the boring bar 27 and the inner hole of the boring bar. When a small amount of water leaks but the internal cooling function is not affected, the guide channel 22 can guide the leaked small amount of water out of the boring bar 27, and meanwhile, whether the internal cooling is normal or not can be judged by observing the amount of the guided water, and the internal cooling is overhauled timely when abnormality occurs, so that other faults of a machine tool caused by the fact that the leaked water is mixed with oil are prevented.
In the technical scheme, an outer sleeve 23 and an outer sleeve end face flange 24 are arranged at the head of the push broach piston 28, a bearing 25 is arranged between the outer sleeve 23 and the push broach piston 28, the outer sleeve end face flange 24 is arranged on one side of the outer sleeve 23, an outer sleeve sealing piece 26 is arranged between the outer sleeve 23 and the inner wall of the boring rod 27, a sealing piece is arranged between the outer sleeve end face flange 24 and the push broach piston 28, and a push broach piston sealing piece 32 is arranged between the inner hole of the push broach piston 28 and the outer wall of the inner cooling connecting shaft 1.
All the sealing members and the sealing rings are provided to prevent water leakage as much as possible, and even if water leakage occurs, the water leakage can be restricted to the minimum area and guided out of the boring bar 27 through the guide passage 22.
In the above technical solution, the inner cooling connecting shaft is connected with a support seat 29 outside the boring bar 27, and a pipe joint 30 is arranged at an end of the inner cooling connecting shaft 1. The supporting seat 29 plays a supporting role, and the pipe joint 30 is convenient to be connected with an external water source.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (8)
1. The inner cooling device arranged in the middle of the boring bar is characterized in that: the inner cooling connecting shaft is connected with the inner cooling shaft after penetrating through a push broach piston, the other end of the inner cooling shaft is connected with a pipe joint, the inner cooling shaft is connected with the connecting and supporting bearing sleeve, the rotating shaft is arranged in a boring bar through the supporting sleeve, one end of the inner cooling connecting shaft penetrates through the front end of the boring bar and is connected with a cutter through a broach mechanism, the other end of the inner cooling connecting shaft is arranged in the connecting and supporting bearing sleeve, a bearing group consisting of a plurality of bearings is arranged between the connecting and supporting bearing sleeve and the rotating shaft, the bearing groups are separated through spacer sleeves, end face flanges are respectively arranged on two sides of the bearing group, an inner end face flange is arranged at one end, close to the inner cooling shaft, of the rotating shaft, a communicated inner cooling channel is arranged among the inner cooling connecting shaft, the inner cooling shaft and the rotating shaft, and bulges inserted in the rotating shaft are arranged on the end.
2. The inner cooling device arranged in the middle of the boring bar as claimed in claim 1, wherein: the support cover is equipped with two at least, is left branch brace cover and right branch brace cover respectively, and left branch brace cover is connected with the rotation axis through lock nut, spacer sleeve, the one side contact of right branch brace cover one side through terminal surface ring flange and bearing group, and its another side is fixed through the step that sets up on the rotation axis.
3. The internal cooling device arranged in the middle of the boring bar as claimed in claim 1 or 2, wherein: the supporting sleeve is provided with a plurality of uniformly distributed grooves on the outer circumference, an adjusting device is arranged in each groove, the adjusting device comprises a folding spring, an adjusting pad and a spherical support which are arranged from inside to outside, the folding spring is in a compression state, and a sealing element is arranged between the spherical support and the inner wall of the groove.
4. The inner cooling device arranged in the middle of the boring bar as claimed in claim 2, wherein: and a plurality of anti-leakage sealing rings are arranged between the right support sleeve and the boring rod.
5. The inner cooling device arranged in the middle of the boring bar as claimed in claim 1, wherein: at least two rotary sealing rings are arranged between the protrusions and the inner wall of the rotating shaft, and end face sealing is arranged between the end face of the rotating shaft and the inner end face flange.
6. The inner cooling device arranged in the middle of the boring bar as claimed in claim 1, wherein: the boring bar is internally provided with a plurality of uniformly distributed derivation channels, each derivation channel comprises a radial channel and an axial channel which are communicated, one end of each axial channel extends to the end part of the boring bar, the other end of each axial channel is communicated with the corresponding radial channel, one end of each radial channel extends to the outer wall of the boring bar and is blocked, and the other end of each radial channel extends to the gap between a connecting support bearing sleeve inside the boring bar and an inner hole of the boring bar.
7. The inner cooling device arranged in the middle of the boring bar as claimed in claim 1, wherein: the head of the push broach piston is provided with an outer sleeve and an outer sleeve end face flange, a bearing is arranged between the outer sleeve and the push broach piston, the outer sleeve end face flange is arranged on one side of the outer sleeve, an outer sleeve sealing piece is arranged between the outer sleeve and the inner wall of the boring rod, an outer sleeve sealing ring is arranged between the outer sleeve end face flange and the push broach piston, and a push broach piston sealing piece is arranged between the inner hole of the push broach piston and the outer circle of the inner cooling connecting shaft.
8. The inner cooling device arranged in the middle of the boring bar as claimed in claim 1, wherein: the inner-cooling connecting shaft is connected with a supporting seat outside the boring bar, and a pipe joint is arranged at the end part of the inner-cooling connecting shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822259657.6U CN210115471U (en) | 2018-12-29 | 2018-12-29 | Interior cold charge in place boring bar middle part is put |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822259657.6U CN210115471U (en) | 2018-12-29 | 2018-12-29 | Interior cold charge in place boring bar middle part is put |
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| Publication Number | Publication Date |
|---|---|
| CN210115471U true CN210115471U (en) | 2020-02-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822259657.6U Active CN210115471U (en) | 2018-12-29 | 2018-12-29 | Interior cold charge in place boring bar middle part is put |
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| Country | Link |
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| CN (1) | CN210115471U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109848449A (en) * | 2018-12-29 | 2019-06-07 | 武汉重型机床集团有限公司 | A kind of interior device for cooling being built in the middle part of boring bar |
-
2018
- 2018-12-29 CN CN201822259657.6U patent/CN210115471U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109848449A (en) * | 2018-12-29 | 2019-06-07 | 武汉重型机床集团有限公司 | A kind of interior device for cooling being built in the middle part of boring bar |
| CN109848449B (en) * | 2018-12-29 | 2024-04-16 | 武汉重型机床集团有限公司 | Internal cooling device built in middle part of boring bar |
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