CN202825417U - Main shaft belt wheel unloading device - Google Patents
Main shaft belt wheel unloading device Download PDFInfo
- Publication number
- CN202825417U CN202825417U CN 201220501355 CN201220501355U CN202825417U CN 202825417 U CN202825417 U CN 202825417U CN 201220501355 CN201220501355 CN 201220501355 CN 201220501355 U CN201220501355 U CN 201220501355U CN 202825417 U CN202825417 U CN 202825417U
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- CN
- China
- Prior art keywords
- contact bearing
- sleeved
- angle contact
- shaft
- belt wheel
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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.)
- Expired - Fee Related
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Abstract
The utility model relates to a main shaft belt wheel unloading device. The main shaft belt wheel unloading device comprises a belt wheel, a spline shaft, a main shaft box body and an unloading mechanism, wherein the unloading mechanism is sleeved on the spline shaft. The unloading mechanism comprises a spline housing, a first angle contact bearing, a second angle contact bearing, support sleeves, a third angle contact bearing, and a cover plate. The spline housing is sleeved on the spline shaft and in clearance fit with the spline shaft. The first angle contact bearing and the second angle contact bearing are sleeved on the spline housing and in interference fit with the spline housing. The support sleeves are sleeved on the first angle contact bearing and the second angle contact bearing and in interference fit with the first angle contact bearing and the second angle contact bearing. The third angle contact bearing is sleeved on the spline shaft. The cover plate is connected at the left end of the spline shaft in a threaded mode. According to the main shaft belt wheel unloading device, radial drawing force on a main shaft inside the main shaft box body from tension of a belt is eliminated, abrasion of a splined hole groove and unstable wheel rotation are avoided, and processing quality of a machine tool is guaranteed.
Description
Technical field
The utility model relates to machine tool chief axis, relates in particular to a kind of primary shaft belt pulley discharge mechanism.
Background technology
In traditional Machine Design, the main shaft in the main spindle box is directly assembling with belt pulley, the splined hole of the direct and main shaft of belt pulley endoporus or with the axle journal interference fits of keyway.The load that belt pulley is subject to all is delivered on the main shaft.In the belt wheel of lathe and the axial end of splined shaft projecting end connection, it is excessive that the wearing and tearing of spline hole slot often occur easily, and the matching relationship of hole slot is damaged, thereby cause the not steady phenomenon of belt wheel rotation, affect crudy, the surface roughness value of workpiece is strengthened.
The utility model content
The technical problems to be solved in the utility model is: a kind of primary shaft belt pulley discharge mechanism is provided, and purpose is the radial pull that the tension force of elimination belt brings to the main spindle box inner main axis, and described radial pull is born by main spindle box body.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of primary shaft belt pulley discharge mechanism, comprise belt wheel and splined shaft and main spindle box body, described primary shaft belt pulley discharge mechanism also comprises the unloading mechanism that is sleeved on the splined shaft, and described unloading mechanism comprises the spline housing that is sleeved on formation matched in clearance on the splined shaft, be sleeved on the first angular contact bearing and second angular contact bearing of the formation interference fit on the described spline housing, be sleeved on the support set that forms interference fit on described the first angular contact bearing and the second angular contact bearing, be sleeved on third angle contact bearing on the described splined shaft, thread connection is at the cover plate of described splined shaft left end; Described cover plate withstands on described spline housing on the inner ring of third angle contact bearing, and the outer surface of described support set is provided with the shaft shoulder and described main spindle box body is linked together, and described spline housing and described belt wheel are linked together.
The beneficial effects of the utility model are, have solved the defective that exists in the background technology, adopt technique scheme after, above-mentioned radial pull is born by main spindle box body, avoided the steady phenomenon of the wearing and tearing of spline hole slot and wheel rotation, guaranteed the crudy of lathe.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the structural representation of preferred embodiment of the present utility model;
Among the figure: 1. belt wheel; 2. unloading mechanism; 2-1. the first angular contact bearing; 2-2. the second angular contact bearing; 2-3. third angle contact bearing; 2-4. support set; 2-5. spline housing; 2-6. cover plate; 3. splined shaft; 4. main spindle box body.
The specific embodiment
With preferred embodiment the utility model is described in further detail by reference to the accompanying drawings now.These accompanying drawings are the schematic diagram of simplification, basic structure of the present utility model only is described in a schematic way, so it only show the formation relevant with the utility model.
A kind of primary shaft belt pulley discharge mechanism as shown in Figure 1, comprise belt wheel 1 and splined shaft 3 and main spindle box body 4, described primary shaft belt pulley discharge mechanism also comprises the unloading mechanism 2 that is sleeved on the splined shaft 3, and described unloading mechanism 2 comprises the spline housing 2-5 that is sleeved on formation matched in clearance on the splined shaft 3, be sleeved on the first angular contact bearing 2-1 and the second angular contact bearing 2-2 of the formation interference fit on the described spline housing 2-5, be sleeved on the upper support set 2-4 that forms interference fit of described the first angular contact bearing 2-1 and the second angular contact bearing 2-2, be sleeved on third angle contact bearing 2-3 on the described splined shaft 3, thread connection is at the cover plate 2-6 of described splined shaft 3 left ends; Described cover plate 2-6 withstands on described spline housing 2-5 on the inner ring of third angle contact bearing 2-3, and the outer surface of described support set 2-4 is provided with the shaft shoulder and described main spindle box body 4 is linked together, and described spline housing 2-5 and described belt wheel 1 are linked together.
Operation principle of the present utility model is as follows: the belt wheel unloading mechanism 2 of the splined shaft 3 in the main spindle box body 4 as shown in Figure 1.Splined shaft 3 is installed in the spline housing 2-5, is matched in clearance between the two.The first angular contact bearing 2-1 and the second angular contact bearing 2-2 are installed between spline housing 2-5 and the splicing sleeve 2-4, form interference fit.Belt wheel 1 floats and is contained on the splined shaft 3.
In unloading mechanism 2, owing to be matched in clearance between spline housing 2-5 and the splined shaft 3, belt is only acted on the spline housing 2-5 to the pulling force of belt wheel 1; Being interference fit between spline housing 2-5 and the first angular contact bearing 2-1 and the second angular contact bearing 2-2, is interference fit between the first angular contact bearing 2-1 and the second angular contact bearing 2-2 and the splicing sleeve 2-4, spline housing 2-5 with pull transfer to splicing sleeve 2-4; Splicing sleeve 2-4 and main spindle box body 4 are fixed together, thus splicing sleeve 2-4 again with the pull transfer of belt to the main spindle box body 4, splined shaft 3 no longer is subject to the pulling force effect of belt, thereby avoids splined shaft 3 to produce flexural deformations.In described unloading mechanism 2, radial pull is born by main spindle box body 4, and power passes to splined shaft 3 through spline housing 2-5.
What describe in the above specification is the specific embodiment of the present utility model, various not illustrating is construed as limiting flesh and blood of the present utility model, the person of an ordinary skill in the technical field after having read specification can to before the described specific embodiment make an amendment or be out of shape, and do not deviate from essence and the scope of utility model.
Claims (1)
1. primary shaft belt pulley discharge mechanism, comprise belt wheel (1) and splined shaft (3) and main spindle box body (4), it is characterized in that: described primary shaft belt pulley discharge mechanism also comprises the unloading mechanism (2) that is sleeved on the splined shaft (3), and described unloading mechanism (2) comprises the spline housing (2-5) that is sleeved on the upper formation of splined shaft (3) matched in clearance, be sleeved on the first angular contact bearing (2-1) and second angular contact bearing (2-2) of the formation interference fit on the described spline housing (2-5), be sleeved on the upper support set (2-4) that forms interference fit of described the first angular contact bearing (2-1) and the second angular contact bearing (2-2), be sleeved on the upper third angle contact bearing (2-3) of described splined shaft (3), thread connection is at the cover plate (2-6) of described splined shaft (3) left end; Described cover plate (2-6) withstands on described spline housing (2-5) on the inner ring of third angle contact bearing (2-3), the outer surface of described support set (2-4) is provided with the shaft shoulder and described main spindle box body (4) is linked together, and described spline housing (2-5) is linked together with described belt wheel (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220501355 CN202825417U (en) | 2012-09-27 | 2012-09-27 | Main shaft belt wheel unloading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220501355 CN202825417U (en) | 2012-09-27 | 2012-09-27 | Main shaft belt wheel unloading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202825417U true CN202825417U (en) | 2013-03-27 |
Family
ID=47937209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220501355 Expired - Fee Related CN202825417U (en) | 2012-09-27 | 2012-09-27 | Main shaft belt wheel unloading device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202825417U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106219165A (en) * | 2016-08-12 | 2016-12-14 | 卓达新材料科技集团威海股份有限公司 | A kind of axle head relief arrangement of transfer roller |
| CN109099137A (en) * | 2018-08-03 | 2018-12-28 | 南京金格尔齿轮箱有限公司 | Extruder gearbox belt wheel load removing device |
-
2012
- 2012-09-27 CN CN 201220501355 patent/CN202825417U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106219165A (en) * | 2016-08-12 | 2016-12-14 | 卓达新材料科技集团威海股份有限公司 | A kind of axle head relief arrangement of transfer roller |
| CN109099137A (en) * | 2018-08-03 | 2018-12-28 | 南京金格尔齿轮箱有限公司 | Extruder gearbox belt wheel load removing device |
| CN109099137B (en) * | 2018-08-03 | 2021-10-08 | 南京金格尔齿轮箱有限公司 | Belt wheel unloading device of extruder gear box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20150927 |
|
| EXPY | Termination of patent right or utility model |