CN111890304A - Bearing dismounting tool - Google Patents
Bearing dismounting tool Download PDFInfo
- Publication number
- CN111890304A CN111890304A CN202010806151.1A CN202010806151A CN111890304A CN 111890304 A CN111890304 A CN 111890304A CN 202010806151 A CN202010806151 A CN 202010806151A CN 111890304 A CN111890304 A CN 111890304A
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- China
- Prior art keywords
- bearing
- split
- sleeve
- split type
- step sleeve
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 description 8
- 238000009966 trimming Methods 0.000 description 3
- 230000003116 impacting effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
- B25B27/06—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting or withdrawing sleeves or bearing races
- B25B27/062—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting or withdrawing sleeves or bearing races using screws
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
The invention discloses a bearing dismounting tool which comprises a split type step sleeve and an ejector rod, wherein the split type step sleeve and the ejector rod are respectively provided with matched thread step sleeve threads and ejector rod threads, the split type step sleeve is provided with a flat part, a second step, a positioning part and a first step, and the ejector rod is provided with a handle. When the split type step sleeve is used, the split type step sleeve penetrates through an inner hole of the bearing, the first step clamps the end face of the bearing, the wrench clamps the flat part, and the bearing can be ejected out by rotating the ejector rod. The invention has simple structure, low cost and convenient operation, can quickly disassemble the bearing and is not easy to damage the bearing.
Description
Technical Field
The invention relates to a mechanical disassembling tool, in particular to a bearing disassembling tool, and belongs to the technical field of mechanical assembly.
Background
The bearing is an important part in the modern mechanical equipment. Its main function is to support the mechanical rotator, reduce the friction coefficient in its motion process and ensure its rotation precision. The problem that the precision of the bearing is lost easily due to improper installation or long-time use is solved, and the bearing needs to be disassembled and replaced by a new bearing.
The bearing in the blind hole is usually disassembled by adopting a method of sliding hammer impact or puller pulling. When the sliding hammer impacts, the lower part of the sliding hammer is generally connected with an expansion sleeve, the bearing is pulled out by a sliding hammer impacting method after being tensioned, the operation is complex, the bearing can be pulled out only by impacting for many times, the operation is laborious, and the bearing is easy to damage. The puller pulling-out is a better method, but the puller on the market is mostly universal, and is mostly suitable for a bearing with a larger inner hole due to the structural limitation of the puller, the puller of a small hole bearing is few, and in addition, the puller on the market mostly has the problems of more parts, complex structure and higher cost.
Disclosure of Invention
The invention aims to solve the technical problem of providing a bearing disassembling tool aiming at the defects of the prior bearing disassembling tool, which has the advantages of simple structure, low cost, convenient operation and difficult damage to a bearing.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the utility model provides a bearing extracting tool, includes split type step cover and ejector pin, split type step sheathes in and is equipped with first step, be equipped with the assorted screw thread on split type step cover and the ejector pin.
Preferably, the split type step sleeve is further provided with a second step.
Preferably, the split step sleeve is provided with a flat.
Preferably, the split step sleeve is provided with a positioning part, and the positioning part is matched with the diameter of the inner hole of the bearing.
Preferably, the width of the slit between the two separated bodies of the separated step sleeve is greater than the difference between the diameter of the first step and the diameter of the positioning part.
Preferably, the first step of the split type step sleeve is provided with a cutting edge.
Preferably, the ejector rod is an inner hexagonal screw or an outer hexagonal screw.
Preferably, a handle is further arranged on the ejector rod.
Preferably, the first step is further provided with a toothed edge.
The invention has the beneficial effects that: the invention comprises a split type step sleeve and an ejector rod, and only comprises two parts, thereby having very simple structure and low cost. Split type step sheathe in and be equipped with ejector pin assorted screw thread, sheathe in at split type step still is provided with first step, flat, location portion and second step, earlier in the bearing hole is gone into with split type step cover card during the use, then with the ejector pin screw in split type step cover in the screw thread, can use the spanner to block flat when necessary, prevent that split type step cover from rotating along with the bearing inner circle together, then rotatory ejector pin drives split type step cover and bearing and removes together, tears out the bearing, convenient operation, difficult damage bearing.
Drawings
FIG. 1 is a schematic view of the general construction of a bearing removal tool of the present invention;
FIG. 2 is a bottom view of a bearing removal tool of the present invention;
FIG. 3 is a schematic view of a tooth cut edge of a bearing removal tool of the present invention;
FIG. 4 is a first embodiment of a bearing removal tool of the present invention;
FIG. 5 is a second embodiment of a bearing removal tool of the present invention;
in the figure: 1. a split type step sleeve; 1-0 flat; 1-1 step sleeve thread; 1-2 second steps; 1-3 a positioning section; 1-4 first steps; 1-5, trimming; 1-6 tooth-shaped trimming; 2. a top rod; 2-1, a mandril thread; 2-2, a handle; 3. a bearing; 4. and a bearing seat.
Detailed Description
The structure and operation of the present invention will be described with reference to fig. 1-5.
As shown in figure 1, the bearing disassembling tool comprises a split type step sleeve 1 and a mandril 2. The split type step sleeve 1 is provided with a flat 1-0, a step sleeve thread 1-1, a second step 1-2, a positioning part 1-3 and a first step 1-4. The ejector rod 2 is provided with an ejector rod thread 2-1 which is matched with the step sleeve thread 1-1.
With reference to fig. 1 and 4, the split type step sleeve 1 is provided with first steps 1 to 4, and after the two split bodies of the split type step sleeve 1 respectively pass through the inner holes of the bearing 3, the first steps 1 to 4 can clamp the end face of the bearing 3, and then the bearing 3 is ejected out by the first steps.
With reference to fig. 1 and 4, the split-type step sleeve 1 is further provided with second steps 1-2, and after the split-type step sleeve 1 penetrates through the bearing 3, the split-type step sleeve 1 can be axially positioned by the second steps 1-2, so that the threads on the two split bodies of the split-type step sleeve are axially aligned after the split-type step sleeve 1 penetrates through the bearing 3. The axial distance between the first step 1-4 and the second step 1-2 is equal to or slightly larger than the thickness of the bearing.
With reference to fig. 1 and 4, the diameter of the positioning portion 1-3 is matched with the inner hole of the bearing 3, and is equal to or slightly smaller than the diameter of the inner hole of the bearing 3, after the split-type step sleeve 1 passes through the inner hole of the bearing 3, the positioning portion 1-3 is matched with the inner hole of the bearing 3, so that the split-type step sleeve 1 is prevented from being skewed when the ejector rod 2 is used for ejecting the bearing 3. When the ejector rod 2 is rotated, the situation that the split type step sleeve 1 rotates along with the inner ring of the bearing 3 is possible, the split type step sleeve 1 is prevented from rotating along with the inner ring of the bearing 3 by clamping the flat 1-0 with a wrench, and therefore the split type step sleeve 1 is ensured to reliably eject the bearing 3.
With reference to fig. 1, 2 and 4, the width of the slit between the two separated bodies of the split-type step sleeve 1 is greater than the difference between the diameter of the first step 1-4 and the diameter of the positioning part 1-3. When the width of a cutting seam between two split bodies of the split type step sleeve 1 is larger than the difference value between the diameter of the first step 1-4 and the diameter of the positioning part 1-3, the maximum size of the first step 1-4 after the two split bodies are combined is smaller than the diameter of the positioning part 1-3, namely smaller than the inner hole of the bearing 3, so that the two split bodies can be smoothly penetrated into the bearing 3, and the bearing 3 can be detached.
As shown in fig. 2, which is a bottom view of fig. 1, the first step 1-4 is provided with a cut edge 1-5, and the cut edge 1-5 is linear. Because the diameter of the step at the lower end of the split type step sleeve 1 is larger than the diameter of the positioning parts 1-3, and the diameters of the positioning parts 1-3 are matched with the inner hole of the bearing 3, under the condition that the width of the cutting seam between the two split bodies is insufficient, the condition that the first step 1-4 cannot penetrate through the inner hole of the bearing can possibly occur, and the split type step sleeve 1 can conveniently penetrate through the inner hole of the bearing 3 by adding the trimming 1-5 at the moment, so that the operation is more convenient.
As shown in fig. 3, which is a bottom view of fig. 1, the first steps 1-4 are further provided with tooth-shaped cut edges 1-6. With reference to fig. 4, the bearing 3 in fig. 4 is a needle bearing, and because the wall thickness is generally thin, if the first steps 1-4 still adopt a circular ring structure, because the diameter of the first step 4 is limited by the positioning step of the bearing 3, the diameter of the first step 4 can only be reduced correspondingly, the contact area between the first step 4 and the bearing 3 is also reduced, the strength is also affected, and the drawing effect is further affected. The tooth-shaped cutting edges 1-6 are arranged on the first steps 1-4, so that the contact area between the first steps 1-4 and the bearing 3 can be increased, the strength is improved, the bearing 3 can be reliably pulled out, and meanwhile, enough positioning steps are reserved for the bearing 3. When the first steps 1-4 are provided with the tooth-shaped cut edges 1-6, the bearing seat 4 is required to be provided with a tooth-shaped cavity matched with the tooth-shaped steps, so that the tooth-shaped cut edges 1-6 can be clamped into the tooth-shaped cavity of the bearing seat 4.
As shown in fig. 4, which is a first embodiment of the bearing dismounting tool of the present invention, a handle 2-2 is further disposed on the top rod 2, and the handle 2-2 is disposed to directly eject the bearing 3 by manually rotating the top rod 2, so that the tool is not required, and the operation is convenient.
The use process comprises the following steps:
the method of using a bearing removal tool of the present invention is described below with reference to fig. 4. When the split type step sleeve is used, one split body of the split type step sleeve 1 penetrates through an inner hole of the bearing 3, the first step 1-4 faces downwards, the upper end face of the first step 1-4 is clamped on the lower end face of the bearing 3 after penetrating through the bearing 3, the positioning portion 1-3 is attached to the inner hole of the bearing 3, the other split body of the split type step sleeve 1 is installed in the same method, then the handle 2-2 of the ejector rod 2 is rotated by hand, the split type step sleeve 1 is propped open by the ejector rod 2 along with the screwing of the ejector rod 2, the positioning portion 1-3 is attached to the inner hole of the bearing 3, and the split type step sleeve 1 is guaranteed not to be inclined when. After the ejector rod 2 contacts the bottom surface of the bearing seat 4, the handle 2-2 is rotated continuously, the situation that the split type step sleeve 1 rotates along with the inner ring of the bearing 3 possibly occurs at the moment, the flat ring 1-0 is clamped by using a wrench, the split type step sleeve 1 can be prevented from rotating along with the inner ring of the bearing 3, and the split type step sleeve 1 and the bearing 3 can be driven to move outwards together by continuously rotating the ejector rod 2 until the bearing 3 is ejected out.
Referring to fig. 5, a second embodiment of the bearing dismounting tool of the present invention is shown, and the method for assembling the split step sleeve 1 is the same as that shown in fig. 4. The difference lies in that the ejector rod 2 of fig. 5 is an inner hexagon screw, but the ejector rod 2 can also be an outer hexagon bolt, and the operation needs to be performed by an inner hexagon wrench, a solid wrench, an adjustable wrench and the like, and an electric or pneumatic tool can be used to match the inner hexagon wrench, a sleeve and the like, so that the operation is more convenient and labor-saving. In addition, the bearing 3 shown in fig. 5 is a deep groove ball bearing, when the ejector rod 2 is operated to eject the bearing 3, the situation that the split type step sleeve 1 rotates along with the inner ring of the bearing 3 may occur at this time, and the split type step sleeve 1 can be prevented from rotating along with the inner ring of the bearing 3 by clamping the flat 1-0 with a wrench, so that the bearing 3 is ejected reliably.
After the technical scheme is adopted, the split type step sleeve 1 and the ejector rod 2 are arranged, the split type step sleeve 1 and the ejector rod 2 are provided with the matched threads, when the bearing support is used, the split type step sleeve 1 penetrates through an inner hole of the bearing 3, the end face of the bearing 3 is clamped by the first step 1-4, the spanner is clamped by the flat bar 1-0, the bearing 3 can be ejected by rotating the ejector rod 2, the structure is simple, the cost is low, the operation is convenient, the bearing 3 can be quickly detached, and the bearing 3 is not easy to damage.
The present invention is not limited to the above preferred embodiments, and any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a bearing extracting tool, includes split type step cover (1) and ejector pin (2), its characterized in that: the split type step sleeve (1) is provided with a first step (1-4), and the split type step sleeve (1) and the ejector rod (2) are respectively provided with a thread step sleeve thread (1-1) and an ejector rod thread (2-1) which are matched.
2. A bearing dismounting tool according to claim 1, characterized in that the split step sleeve (1) is further provided with a second step (1-2).
3. A bearing dismounting tool according to claim 1, characterized in that the split step sleeve (1) is provided with a flat (1-0).
4. A bearing dismounting tool according to claim 1, characterized in that the split step sleeve (1) is provided with a positioning portion (1-3), and the positioning portion (1-3) is matched with the diameter of the inner hole of the bearing (3).
5. A bearing dismounting tool according to claim 1, characterized in that the kerf width between the two split bodies of the split-type step sleeve (1) is larger than the difference between the diameter of the first step (1-4) and the diameter of the positioning part (1-3).
6. A bearing dismounting tool according to claim 1, characterized in that the first step (1-4) of the split step sleeve (1) is provided with a cut edge (1-5).
7. A bearing dismounting tool according to claim 1, characterized in that the carrier rod (2) is a socket head cap screw or a socket head cap screw.
8. A bearing dismounting tool according to claim 1, characterized in that the carrier rod (2) is further provided with a handle (2-2).
9. A bearing removal tool according to claim 6, wherein the first step (1-4) is further provided with a toothed cutting edge (1-6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010806151.1A CN111890304A (en) | 2020-08-12 | 2020-08-12 | Bearing dismounting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010806151.1A CN111890304A (en) | 2020-08-12 | 2020-08-12 | Bearing dismounting tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111890304A true CN111890304A (en) | 2020-11-06 |
Family
ID=73229839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010806151.1A Pending CN111890304A (en) | 2020-08-12 | 2020-08-12 | Bearing dismounting tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111890304A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH106237A (en) * | 1996-06-14 | 1998-01-13 | Hoshizaki Electric Co Ltd | Mounting and removing tool for bushing |
| CN103465223A (en) * | 2013-08-30 | 2013-12-25 | 哈尔滨东安发动机（集团）有限公司 | Bearing removal tool |
| CN203622360U (en) * | 2013-12-26 | 2014-06-04 | 河南恒星钢缆有限公司 | Ejection type bearing dismounting tool |
| CN203887794U (en) * | 2014-06-23 | 2014-10-22 | 山西平阳重工机械有限责任公司 | Self-positioning blind hole bearing disassembling device |
| CN205668234U (en) * | 2016-05-25 | 2016-11-02 | 江铃汽车股份有限公司 | A kind of inner bearing disassembling fixture |
| CN205703998U (en) * | 2016-04-29 | 2016-11-23 | 湖州哈特贝尔精密锻造有限公司 | A kind of screw rod frock pulling out axle |
| CN207309855U (en) * | 2017-09-27 | 2018-05-04 | 中国人民解放军第五七二一工厂 | A kind of stepped hole interior axle bearing outer-ring extracting tool |
| CN209273353U (en) * | 2018-11-05 | 2019-08-20 | 西安飞机工业（集团）有限责任公司 | A kind of blind hole bearing quick-release arrangement |
| CN209350177U (en) * | 2018-12-20 | 2019-09-06 | 浙江机电职业技术学院 | A kind of internal screw thread bushing special dismounting tooling |
| CN111300334A (en) * | 2020-04-07 | 2020-06-19 | 重庆江增船舶重工有限公司 | Mixed flow turbocharger shaft sleeve dismounting tool and method |
| CN212351855U (en) * | 2020-08-12 | 2021-01-15 | 博深股份有限公司 | Bearing extracting tool with split type step cover |
-
2020
- 2020-08-12 CN CN202010806151.1A patent/CN111890304A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH106237A (en) * | 1996-06-14 | 1998-01-13 | Hoshizaki Electric Co Ltd | Mounting and removing tool for bushing |
| CN103465223A (en) * | 2013-08-30 | 2013-12-25 | 哈尔滨东安发动机（集团）有限公司 | Bearing removal tool |
| CN203622360U (en) * | 2013-12-26 | 2014-06-04 | 河南恒星钢缆有限公司 | Ejection type bearing dismounting tool |
| CN203887794U (en) * | 2014-06-23 | 2014-10-22 | 山西平阳重工机械有限责任公司 | Self-positioning blind hole bearing disassembling device |
| CN205703998U (en) * | 2016-04-29 | 2016-11-23 | 湖州哈特贝尔精密锻造有限公司 | A kind of screw rod frock pulling out axle |
| CN205668234U (en) * | 2016-05-25 | 2016-11-02 | 江铃汽车股份有限公司 | A kind of inner bearing disassembling fixture |
| CN207309855U (en) * | 2017-09-27 | 2018-05-04 | 中国人民解放军第五七二一工厂 | A kind of stepped hole interior axle bearing outer-ring extracting tool |
| CN209273353U (en) * | 2018-11-05 | 2019-08-20 | 西安飞机工业（集团）有限责任公司 | A kind of blind hole bearing quick-release arrangement |
| CN209350177U (en) * | 2018-12-20 | 2019-09-06 | 浙江机电职业技术学院 | A kind of internal screw thread bushing special dismounting tooling |
| CN111300334A (en) * | 2020-04-07 | 2020-06-19 | 重庆江增船舶重工有限公司 | Mixed flow turbocharger shaft sleeve dismounting tool and method |
| CN212351855U (en) * | 2020-08-12 | 2021-01-15 | 博深股份有限公司 | Bearing extracting tool with split type step cover |
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