CN109848449B - Internal cooling device built in middle part of boring bar - Google Patents
Internal cooling device built in middle part of boring bar Download PDFInfo
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- CN109848449B CN109848449B CN201811652911.7A CN201811652911A CN109848449B CN 109848449 B CN109848449 B CN 109848449B CN 201811652911 A CN201811652911 A CN 201811652911A CN 109848449 B CN109848449 B CN 109848449B
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- internal cooling
- shaft
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- rotating shaft
- boring bar
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- 238000001816 cooling Methods 0.000 title claims abstract description 62
- 125000006850 spacer group Chemical group 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims description 26
- 230000000694 effects Effects 0.000 abstract description 2
- 230000000149 penetrating effect Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000003754 machining Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Auxiliary Devices For Machine Tools (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
The invention discloses an internal cooling device arranged in the middle of a boring bar, which comprises an internal cooling connecting shaft, a rotating shaft, a connecting support bearing sleeve, an internal cooling shaft, an outer end face flange and a connecting shaft, wherein one end of the internal cooling connecting shaft passes through a push-type knife 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 part of the internal cooling connecting shaft does not rotate, the internal cooling shaft is connected with the connecting support bearing sleeve, the rotating shaft is arranged in the boring bar through the support sleeve, one end of the rotating shaft is arranged at the front end of the boring bar in a penetrating manner and is connected with a cutter through a broach mechanism, the other end of the rotating shaft is arranged in the connecting support bearing sleeve, a bearing group consisting of a plurality of bearings is arranged between the connecting support bearing sleeve and the rotating shaft, and the bearing groups are separated through a spacer. The device has compact structure, reasonable layout and good use effect.
Description
Technical Field
The invention belongs to the technical field of machinery, and particularly relates to an internal cooling device arranged in the middle of a boring bar.
Background
With the increase in the demands of parts for machining and the advancement of tools, the need for machine tools having a tool internal cooling function in machining has become an urgent and realizable technology. But the internal cooling structure is realized differently due to the characteristics of different machine tools and different structures. Under the conditions of limited structure, movable main shaft (i.e. boring bar), boring bar built-in screw rod and high main shaft rotating speed, the realization of internal cooling has great difficulty.
The existing boring bar internal cooling mechanism is poor in support caused by machining errors of an inner hole of a main shaft, so that deflection of a rotating shaft cannot be eliminated; the sealing element or the inner cooling shaft is easy to wear due to the fact that the rotating shaft and the inner cooling shaft are not concentric; the long shaft of the internal cooling is rotated to limit the increase of the rotating speed, and the internal cooling cannot be discharged after leakage, so that the problems of oil-water mixing and the like are solved.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the internal cooling device which is arranged in the middle of the boring bar, and the internal cooling device has the advantages of compact structure, reasonable layout and good use effect.
In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides an internal cooling device in boring bar middle part, includes interior cold connecting axle, rotation axis, connection support bearing bush, interior cold axle, outer terminal surface flange, connecting axle, interior cold connecting axle one end passes behind the push-broach piston and is connected with interior cold axle, and its other end is connected with the coupling, and this part is rotatory, interior cold axle is connected with connection support bearing bush, the rotation axis passes through the support bush setting in the boring bar, and its one end wears to establish boring bar front end and is connected with the cutter through broach mechanism, and its other end sets up in connection support bearing bush, and is equipped with the bearing group that a plurality of bearings constitute between connection support bearing bush and the rotation axis, separates through the spacer between the bearing group, and the bearing group both can bear push-broach power and has high gyration precision again, and the both sides of bearing group are equipped with the terminal surface flange respectively, and the rotation axis is equipped with interior terminal surface flange near the one end of interior cold axle, is equipped with the interior cold passageway of intercommunication in the centre of aforesaid interior cold connecting axle, interior cold axle and rotation axis face department is equipped with the arch of pegging graft in the rotation axis.
In the above technical scheme, the support sleeve is equipped with two at least, is left support sleeve and right support sleeve respectively, and left support sleeve passes through lock nut, spacer bush and is connected with the rotation axis, right support sleeve one side passes through the face flange dish and contacts with the one side of bearing group, and its another side is fixed through the step that sets up on the rotation axis.
In the above technical scheme, be equipped with a plurality of evenly distributed's recess on the support sleeve outer circumference, be equipped with an adjusting device in every recess, adjusting device is including folding spring, the adjustment pad that from inside to outside set up, sphere support, folding spring is compression state, is equipped with the sealing member between sphere support and the recess inner wall.
In the technical scheme, a plurality of leakage-proof sealing rings are arranged between the right support sleeve and the boring bar.
In the technical scheme, at least two anti-leakage 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.
In the technical scheme, a plurality of evenly distributed guide-out channels are arranged in the boring bar, each guide-out 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 a gap part inside the boring bar, which is used for connecting the supporting bearing sleeve and the inner hole of the boring bar.
In the technical scheme, the head part of the push-broach piston is provided with the outer sleeve and the outer sleeve end face flange, the 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, the outer sleeve sealing piece is arranged between the outer sleeve and the inner wall of the boring rod, the outer sleeve sealing ring is arranged between the outer sleeve end face flange and the push-broach piston, and the push-broach piston sealing piece is arranged between the inner hole of the push-broach piston and the outer circle of the internal cooling connecting shaft.
In the technical scheme, the internal cooling connecting shaft is connected with the supporting seat outside the boring bar, and the pipe joint is arranged at the end part of the internal cooling connecting shaft.
The beneficial effects of the invention are as follows: the device compact structure, set up adjusting device to main shaft hole machining error, designed the discharge channel to a small amount of leakage, made long and thin interior cold connecting axle not need rotate and form wholly with bearing group inner and outer circle and guarantee the coaxial of interior cold axle and rotation axis through structural design, solved the problem that interior cold function is difficult to realize betterly.
Drawings
Fig. 1 is a schematic diagram of a 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. an inner cooling connecting shaft, 2, a rotating shaft, 3, a connecting support bearing sleeve, 4, an inner cooling shaft, 5, an outer end face flange, 6, an inner cooling connecting shaft head, 7, a left support sleeve, 8, a right support sleeve, 9, a bearing group, 10, a left end face flange, 11, an inner end face flange, 12, an inner cooling channel, 13, a lock nut, 14, a spacer, 15, a stacked spring, 16, a cushion, 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 rod, 28, a push-in piston, 29, a supporting seat, 30, a pipe joint, 31, 32, a push-in piston sealing element.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific examples.
An internal cooling device which is arranged in the middle of a boring bar 27 and shown in fig. 1 to 4 comprises an internal cooling connecting shaft 1, a rotating shaft 2, a connecting support 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-type knife 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 support bearing sleeve 3, the rotating shaft 2 is arranged in the boring bar 27 through a left support sleeve 7 and a right support sleeve 8, one end of the rotating shaft 2 is penetrated to the front end of the boring bar 27 and is connected with a cutter through a broach mechanism and synchronously rotates with the cutter and the boring bar, the other end of the rotating shaft is arranged in the connecting support bearing sleeve 3, a bearing group 9 consisting of a plurality of bearings is arranged between the connecting support bearing sleeve 3 and the rotating shaft 2, the bearing group 9 is separated through a spacer 14, 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 face 11 of the rotating shaft 2, which is close to the internal cooling shaft 4, one end of the rotating shaft 2 is provided with an inner end face 11, the front end face 1 is connected with the inner end face 2 and the rotating shaft 2 is provided with a cold end face 12, and the inner end face 2 is connected with the inner end face 2 in a cold channel, and the rotating shaft 2 is provided with a cold middle channel. The bearing group 9 is used for bearing the pushing cutter force and is used as the front end support of the internal cooling connecting shaft 1, one group of three 60-degree angle screw bearings is selected, the two ends are pre-tightened by the left end face flange 10, the outer end face flange 5 and the middle by a spacer bush, and the bearings are lubricated by grease.
In the technical scheme, the left support sleeve 7 is connected with the rotating shaft 2 through the lock nut 13 and the spacer bush, one surface of the right support sleeve 8 is contacted with one surface of the bearing group 9 through the end surface flange, and the other surface of the right support sleeve 8 is fixed through a step arranged on the rotating shaft 2. The lock nut 13 and spacer fix the left support sleeve 7 and rotate with the rotating shaft 2, while the step and end flange fix the right support sleeve 8 and rotate with the rotating shaft 2.
In the above technical scheme, be equipped with a plurality of evenly distributed's recess on the outer circumference of left support cover 7 and right support cover 8, be equipped with an adjusting device in every recess, adjusting device includes fold spring 15, adjustment pad 16, the sphere support 17 that from inside to outside set up, fold spring 15 is compression state, is equipped with sealing member 18 between sphere support 17 and the recess inner wall. The adjusting device can be provided with 3, 4, 6 and the like according to the requirement, which is equivalent to a plurality of piston type elastic supports, and the adjusting pad 16 can achieve proper pretension to the stacking spring and eliminate machining errors in a certain range.
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 solution, at least two anti-leakage sealing rings 20 are arranged between the protrusions 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 grease 31 is arranged between the anti-leakage sealing rings 20.
In the above technical solution, the boring bar 27 is provided with a plurality of evenly distributed guiding-out channels 22, including a radial channel and an axial channel which are communicated, one end of the axial channel extends to the end of the boring bar 27, the other end 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 extends to the gap between the connecting support bearing sleeve 3 and the inner bore of the boring bar 27. When a small amount of leakage exists and the internal cooling function is not affected, the guiding-out channel 22 can guide out the leaked small amount of water from the interior of the boring bar 27, meanwhile, whether the internal cooling is normal or not can be judged by observing the amount of the guided-out water, and when the internal cooling is abnormal, the machine tool is overhauled in time, so that other faults of the machine tool caused by mixing the leaked water and oil are prevented.
In the above technical solution, the head of the push-broach piston 28 is provided with the outer sleeve 23 and the outer sleeve end flange 24, the bearing 25 is provided between the outer sleeve 23 and the push-broach piston 28, the outer sleeve end flange 24 is provided on one side of the outer sleeve 23, the outer sleeve seal 26 is provided between the outer sleeve 23 and the inner wall of the boring bar 27, the seal is provided between the outer sleeve end flange 24 and the push-broach piston 28, and the push-broach piston seal 32 is provided between the inner hole of the push-broach piston 28 and the outer wall of the internal cooling connecting shaft 1.
All the sealing members and sealing rings are arranged to prevent water leakage as much as possible, even if water leakage occurs, the water leakage can be limited to the minimum area, and the leaked water can be led out of the boring bar 27 through the leading-out channel 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 the end of the inner cooling connecting shaft 1. The support 29 supports and the pipe connection 30 facilitates connection to an external water source.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention.
Claims (6)
1. An internal cooling device arranged in the middle of a boring bar is characterized in that: the boring machine comprises an internal cooling connecting shaft, a rotating shaft, a connecting support bearing sleeve and an internal cooling shaft, wherein one end of the internal cooling connecting shaft passes through a push-type 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 is connected with the connecting support bearing sleeve, the rotating shaft is arranged in a boring rod through the support sleeve, one end of the rotating shaft penetrates through the front end of the boring rod and is connected with a cutter through a broach mechanism, the other end of the rotating shaft is arranged in the connecting support bearing sleeve, a bearing group consisting of a plurality of bearings is arranged between the connecting support bearing sleeve and the rotating shaft, the bearing groups are separated by a spacer bush, end face flanges are respectively arranged on two sides of the bearing group, an internal cooling channel communicated with one end face flange is arranged at the position of the rotating shaft, which is close to the internal cooling shaft, a bulge inserted in the rotating shaft is arranged at the middle of the internal cooling connecting shaft, a plurality of evenly distributed guide-out channels are arranged in the boring rod, the guide-out channels comprise communicated radial channels and axial channels, one ends of the axial channels extend to the end parts of the boring rod, the other ends of the radial channels are communicated with the radial channels, one ends of the radial channels extend to the outer walls of the boring rod, the other ends of the boring rod extend to the inner ends of the bearing groups, the inner hole of the boring rod are connected with the inner hole and the inner hole is connected with the inner hole of the end of the inner supporting shaft, and the inner hole is arranged at the joint, and the joint is connected with the inner hole, and the inner hole is arranged.
2. The internal cooling device built in the middle of a boring bar according to claim 1, wherein: the support sleeve is provided with at least two, namely a left support sleeve and a right support sleeve, the left support sleeve is connected with the rotating shaft through a lock nut and a spacer bush, one surface of the right support sleeve is contacted with one surface of the bearing group through an end surface flange plate, and the other surface of the right support sleeve is fixed through a step arranged on the rotating shaft.
3. The internal cooling device built in the middle of a boring bar according to claim 1 or 2, wherein: the support sleeve is characterized in that a plurality of evenly distributed grooves are formed in the outer circumference of the support sleeve, an adjusting device is arranged in each groove, each adjusting device comprises a stacked spring, an adjusting pad and a spherical support, the stacked springs are in a compressed state, and a sealing piece is arranged between the spherical support and the inner wall of each groove.
4. The internal cooling device built in the middle of the boring bar according to claim 2, wherein: and a plurality of leakage-proof sealing rings are arranged between the right support sleeve and the boring bar.
5. The internal cooling device built in the middle of a boring bar according to claim 1, wherein: at least two rotary sealing rings are arranged between the bulge and the inner wall of the rotary shaft, and end face sealing is arranged between the end face of the rotary shaft and the inner end face flange.
6. The internal cooling device built in the middle of a boring bar according to claim 1, wherein: the end face flange of the outer sleeve is arranged on one side of the outer sleeve, a sealing piece of the outer sleeve is arranged between the outer sleeve and the inner wall of the boring rod, a sealing ring of the outer sleeve is arranged between the end face flange of the outer sleeve and the push broach piston, and a sealing piece of the push broach piston is arranged between an inner hole of the push broach piston and the outer circle of the internal cooling connecting shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811652911.7A CN109848449B (en) | 2018-12-29 | 2018-12-29 | Internal cooling device built in middle part of boring bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811652911.7A CN109848449B (en) | 2018-12-29 | 2018-12-29 | Internal cooling device built in middle part of boring bar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109848449A CN109848449A (en) | 2019-06-07 |
| CN109848449B true CN109848449B (en) | 2024-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811652911.7A Active CN109848449B (en) | 2018-12-29 | 2018-12-29 | Internal cooling device built in middle part of boring bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109848449B (en) |
Citations (15)
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| DE19503072A1 (en) * | 1994-08-24 | 1996-02-29 | Donau Werkzeugmaschinen Gmbh | Boring mill for automatic tool change |
| DE19721997A1 (en) * | 1997-05-27 | 1998-12-03 | Komet Stahlhalter Werkzeug | Machine tool for cutting workpieces |
| CN101745833A (en) * | 2008-12-16 | 2010-06-23 | 武汉重型机床集团有限公司 | Inner-cooling automatic tool-broaching mechanism of spindle of boring bar |
| CN101941152A (en) * | 2010-08-27 | 2011-01-12 | 沈阳第一机床厂 | High-speed turn-milling combined machining power electric main shaft device and manufacturing method thereof |
| CN201922250U (en) * | 2010-12-30 | 2011-08-10 | 德州普利森机床有限公司 | Processing device for deep hole |
| CN102528095A (en) * | 2011-12-23 | 2012-07-04 | 上海三一精机有限公司 | Transmission structure of main shaft with inner cooling channel |
| KR20120083953A (en) * | 2011-01-19 | 2012-07-27 | 두산인프라코어 주식회사 | Cooling apparatus for spindle's shaft |
| CN202377863U (en) * | 2011-12-01 | 2012-08-15 | 武汉国威重型机械制造有限公司 | Inner cooling mechanism of main shaft with cutter tensioning device |
| CN103170865A (en) * | 2013-03-11 | 2013-06-26 | 温州思拓机械有限公司 | Valve body machining numerical control double-spindle drilling and milling power head |
| CN204565130U (en) * | 2015-02-04 | 2015-08-19 | 浙江日发精密机械股份有限公司 | Turnning and milling composite main shaft |
| CN205021273U (en) * | 2015-09-10 | 2016-02-10 | 沈机集团昆明机床股份有限公司 | A sharp feed mechanism for milling boring machine |
| CN105665762A (en) * | 2016-04-22 | 2016-06-15 | 云南省机械研究设计院 | Boring head with pneumatic cooling function |
| CN106541298A (en) * | 2016-12-07 | 2017-03-29 | 宁波海天精工股份有限公司 | A kind of piston axle construction for being applied to internally cooled-spindle |
| CN207840154U (en) * | 2018-02-08 | 2018-09-11 | 常州市翰琪电机有限公司 | Efficiently cooling carving milling electro spindle |
| CN210115471U (en) * | 2018-12-29 | 2020-02-28 | 武汉重型机床集团有限公司 | Interior cold charge in place boring bar middle part is put |
-
2018
- 2018-12-29 CN CN201811652911.7A patent/CN109848449B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19503072A1 (en) * | 1994-08-24 | 1996-02-29 | Donau Werkzeugmaschinen Gmbh | Boring mill for automatic tool change |
| DE19721997A1 (en) * | 1997-05-27 | 1998-12-03 | Komet Stahlhalter Werkzeug | Machine tool for cutting workpieces |
| CN101745833A (en) * | 2008-12-16 | 2010-06-23 | 武汉重型机床集团有限公司 | Inner-cooling automatic tool-broaching mechanism of spindle of boring bar |
| CN101941152A (en) * | 2010-08-27 | 2011-01-12 | 沈阳第一机床厂 | High-speed turn-milling combined machining power electric main shaft device and manufacturing method thereof |
| CN201922250U (en) * | 2010-12-30 | 2011-08-10 | 德州普利森机床有限公司 | Processing device for deep hole |
| KR20120083953A (en) * | 2011-01-19 | 2012-07-27 | 두산인프라코어 주식회사 | Cooling apparatus for spindle's shaft |
| CN202377863U (en) * | 2011-12-01 | 2012-08-15 | 武汉国威重型机械制造有限公司 | Inner cooling mechanism of main shaft with cutter tensioning device |
| CN102528095A (en) * | 2011-12-23 | 2012-07-04 | 上海三一精机有限公司 | Transmission structure of main shaft with inner cooling channel |
| CN103170865A (en) * | 2013-03-11 | 2013-06-26 | 温州思拓机械有限公司 | Valve body machining numerical control double-spindle drilling and milling power head |
| CN204565130U (en) * | 2015-02-04 | 2015-08-19 | 浙江日发精密机械股份有限公司 | Turnning and milling composite main shaft |
| CN205021273U (en) * | 2015-09-10 | 2016-02-10 | 沈机集团昆明机床股份有限公司 | A sharp feed mechanism for milling boring machine |
| CN105665762A (en) * | 2016-04-22 | 2016-06-15 | 云南省机械研究设计院 | Boring head with pneumatic cooling function |
| CN106541298A (en) * | 2016-12-07 | 2017-03-29 | 宁波海天精工股份有限公司 | A kind of piston axle construction for being applied to internally cooled-spindle |
| CN207840154U (en) * | 2018-02-08 | 2018-09-11 | 常州市翰琪电机有限公司 | Efficiently cooling carving milling electro spindle |
| CN210115471U (en) * | 2018-12-29 | 2020-02-28 | 武汉重型机床集团有限公司 | Interior cold charge in place boring bar middle part is put |
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| Publication number | Publication date |
|---|---|
| CN109848449A (en) | 2019-06-07 |
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