CN204381957U - The protection mechanism of main shaft - Google Patents
The protection mechanism of main shaft Download PDFInfo
- Publication number
- CN204381957U CN204381957U CN201420852511.1U CN201420852511U CN204381957U CN 204381957 U CN204381957 U CN 204381957U CN 201420852511 U CN201420852511 U CN 201420852511U CN 204381957 U CN204381957 U CN 204381957U
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- CN
- China
- Prior art keywords
- stop collar
- axle core
- protection mechanism
- main shaft
- tool assembly
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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.)
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Abstract
The utility model discloses a kind of protection mechanism of main shaft, described main shaft comprises body, the bearing be arranged in body, axle core, broaching tool assembly, to be promoted piston cylinder that broaching tool assembly moves downward by piston, be arranged on the first flexible member between broaching tool assembly and axle core; This protection mechanism comprises the floating pulling claw be connected in piston cylinder body, the stop collar be connected on axle core; Described floating pulling claw is provided with the supporting part be positioned at below stop collar; The upper end of described body has support portion, and described support portion is fixed with backstay; The upper end of described backstay is also provided with location division, described backstay is set with the second flexible member between location division and floating pulling claw.The downward axial force that the utility model can utilize supporting part to apply axle core the piston that the jacking force of axle core offsets piston cylinder, can reduce the downward axial force that axle core applies bearing, is conducive to the life-span extending bearing.
Description
Technical field
The utility model relates to a kind of protection mechanism of main shaft.
Background technology
Existing main shaft comprises body, the bearing be arranged in body, be inserted in bearing inner race and the axle core that can rotate relative to body, the broaching tool assembly that can be arranged on axle in-core up or down, the piston cylinder that moved downward by piston promotion broaching tool assembly.In exchanging knives process, move downward usually through utilizing the piston actuated broaching tool assembly of piston cylinder, to realize tool changing operation.And existing piston cylinder body is all fixed on body, the axial force of piston downward pushing tow broaching tool assembly can be passed to axle core, make axle core that trace occur axially to move down, and downward axial force is applied to the inner ring of bearing, and in the actual application of main shaft, in order to satisfied different process requirements often needs frequently change cutter, thus the frequent pushing tow broaching tool assembly downwards of piston need be utilized, and cutter changing operation makes the load of piston transmission impact frequently bearing frequently, bearing enclose raceway face is caused to occur false Bu Shi impression, and then affect the cooperation of bearing inner race and outer ring, cause the inefficacy of bearing, have a strong impact on the service life of bearing.
Utility model content
In order to overcome the deficiencies in the prior art, the purpose of this utility model is the protection mechanism providing a kind of main shaft, it can reduce the downward axial force that piston is applied bearing by axle core in the piston of piston cylinder downward pushing tow broaching tool component process, is conducive to the service life extending bearing.
For solving the problem, the technical scheme that the utility model adopts is as follows:
The protection mechanism of main shaft, described main shaft comprises body, the bearing be arranged in body, be inserted in bearing inner race and the axle core that can rotate relative to body, the broaching tool assembly that can be arranged on axle in-core up or down, the piston cylinder moved downward by piston promotion broaching tool assembly, be arranged on the first flexible member between broaching tool assembly and axle core; This first flexible member is for providing the elastic stress of broaching tool assembly upwards pushing tow; This protection mechanism comprises the floating pulling claw be connected in piston cylinder body, the stop collar be connected on axle core; Described floating pulling claw is provided with the supporting part be positioned at below stop collar; The upper end of described body has support portion, and described support portion is fixed with backstay; Described floating pulling claw movable set on the securing lever, and can move making supporting part upwards support between the upper extreme position of stop collar and the lower limit position making supporting part leave stop collar; The upper end of described backstay is also provided with location division, described backstay is set with the second flexible member between location division and floating pulling claw, and this second flexible member is for providing the elastic stress of floating pulling claw towards lower limit position pushing tow.
The bottom of described stop collar is threaded in axle in-core, described stop collar is provided with the through hole passed for broaching tool assembly upper end; Described broaching tool assembly is provided with the stage portion be positioned at below stop collar bottom, and the external diameter of this stage portion is greater than the internal diameter of stop collar through hole.
Described stop collar is arranged with at least two checknut holes around the circumference of axle core, and described checknut hole internal thread is connected with lock screw, and the lower end of each lock screw is threaded in each locating hole of axle core correspondingly.
Described stop collar is provided with at least one group of screwed hole unit, described screwed hole unit comprises several balance screwed holes that the circumference around axle core arranges, this protection mechanism also comprises balance adjustment screws, described balance adjustment screws is provided with and the external screw thread balancing corresponding threaded holes and close.
Described first flexible member, the second flexible member are butterfly spring.
The cooperation of described support portion and stop collar is formed as the position limiting structure that only can move between upper extreme position and lower limit position for limiting floating pulling claw.
Described support portion is fixed with several backstays, floats pulling claw movable set on all backstays; Each backstay is all set with the second flexible member.
All backstays arrange around the circumference of axle core.
Compared to existing technology, the beneficial effects of the utility model are:
When the piston downward pushing tow broaching tool assembly of piston cylinder, supporting part can be utilized to support stop collar, thus the downward axial force that supporting part applies axle core the piston that the jacking force of axle core offsets piston cylinder can be utilized, to reduce, even to avoid the axis of axle core to move down, thus the downward axial force that axle core applies bearing can be reduced, be conducive to the life-span extending bearing; And, by rationally arranging the annexation of stop collar and axle core, the stability that stop collar is connected with axle core can being improved, preventing stop collar from occurring getting loose, rotation phenomenon, meanwhile, by utilizing stop collar, also can prevent broaching tool assembly from departing from axle core; In addition, by being provided with balance screwed hole on stop collar, dynamic balancing is corrected to reach requirement for dynamic balance by screwing in balance adjustment screws mode.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of stop collar;
Fig. 3 is that the A-A of Fig. 2 is to sectional view;
Wherein, 1, body; 11, backstay; 2, bearing; 3, axle core; 4, broaching tool assembly; 41, stage portion; 51, piston cylinder body; 52, piston; 6, the first flexible member; 7, float pulling claw; 71, supporting part; 8, stop collar; 81, checknut hole; 82, lock screw; 83, screwed hole is balanced; 9, the second flexible member.
Detailed description of the invention
Below, by reference to the accompanying drawings and detailed description of the invention, the utility model is described further, understands the utility model technical thought required for protection so that clearer.
As shown in Figure 1, 2, 3, for the protection mechanism of main shaft of the present utility model, described main shaft comprises body 1, the bearing 2 be arranged in body 1, be inserted in bearing 2 inner ring and the axle core 3 that can rotate relative to body 1, the broaching tool assembly 4 that can be arranged on up or down in axle core 3, promoted piston cylinder that broaching tool assembly 4 moves downward, be arranged on the first flexible member 6 between broaching tool assembly 4 and axle core 3 by piston 52; This first flexible member 6 is for providing the elastic stress of broaching tool assembly 4 upwards pushing tow; This protection mechanism comprises the floating pulling claw 7 be connected in piston cylinder body 51, the stop collar 8 be connected on axle core 3; Described floating pulling claw 7 is provided with the supporting part 71 be positioned at below stop collar 8; The upper end of described body 1 has support portion, described support portion is fixed with backstay 11; Described floating pulling claw 7 movable set on backstay 11, and can move making supporting part 71 upwards support between the upper extreme position of stop collar 8 and the lower limit position making supporting part 71 leave stop collar 8; The upper end of described backstay 11 is also provided with location division, described backstay 11 is set with the second flexible member 9 between location division and floating pulling claw 7, and this second flexible member 9 is for providing the elastic stress of floating pulling claw 7 towards lower limit position pushing tow.Wherein, described piston cylinder can adopt cylinder or hydraulic cylinder etc.
Preferably, described support portion is fixed with several backstays 11, floats pulling claw 7 movable set on all backstays 11; Each backstay 11 is all set with the second flexible member 9.All backstays 11 arrange around the circumference of axle core 3, to make the stressed more even of floating pulling claw 7.
Wherein, described first flexible member 6, second flexible member 9 can adopt the flexible members such as spring, and in the present embodiment, described first flexible member 6, second flexible member 9 all adopts butterfly spring.
The bottom of described stop collar 8 is threaded in axle core 3, described stop collar 8 is provided with the through hole passed for broaching tool assembly 4 upper end; Described broaching tool assembly 4 is provided with the stage portion 41 be positioned at below stop collar 8 bottom, the external diameter of this stage portion 41 is greater than the internal diameter of stop collar 8 through hole.And by adopting said structure, the axiality that stop collar 8 and axle core 3 are installed can be guaranteed, and, the gear of stop collar 8 bottom also can be utilized to establish effect, can prevent broaching tool assembly 4 from departing from axle core 3.
Preferably, described stop collar 8 is arranged with at least two checknut holes 81 around the circumference of axle core 3, described checknut hole 81 internal thread is connected with lock screw 82, and the lower end of each lock screw 82 is threaded in each locating hole of axle core 3 correspondingly.And by adopting said structure, can further improve the stability that stop collar 8 is connected with axle core 3, preventing stop collar 8 from getting loose relative to axle core 3, rotating, to avoid impacting the dynamic balancing of main shaft.And in order to play locking effect further, when installing lock screw 82, also screw thread glue can be scribbled in lock screw 82.
Preferably, described stop collar 8 is provided with at least one group of screwed hole unit, described screwed hole unit comprises several balance screwed holes 83 that the circumference around axle core 3 arranges, this protection mechanism also comprises balance adjustment screws, described balance adjustment screws is provided with and the external screw thread balancing screwed hole 83 and match.And by adopting said structure, after axle core 3, stop collar 8, broaching tool assembly 4 installation, by screwing in balance adjustment screws in balance screwed hole 83, thus the mode adding quality can be utilized to correct dynamic balancing, reach requirement for dynamic balance to make rotatable parts.In the present embodiment, described stop collar 8 is provided with two groups of screwed hole unit.
Concrete, the cooperation of described support portion and stop collar 8 is formed as the position limiting structure that only can move between upper extreme position and lower limit position for limiting floating pulling claw 7.
Operation principle of the present utility model is as follows: when the piston 52 of piston cylinder moves downwardly to pushing tow broaching tool assembly 4, broaching tool assembly 4 applies opposition to piston 52 under the elastic force effect of the first flexible member 6, make piston cylinder body 51 together with floating pulling claw 7 under this opposition fast on move, floating pulling claw 7 moves to upper extreme position and drives supporting part 71 upwards to support stop collar 8, to apply jacking force upwards to axle core 3, thus the downward axial force that piston 52 is applied by broaching tool assembly 4 pairs of axle cores 3 in tool changing operation process can be offset, to reduce, even avoid axle core 3 to bottom offset, thus the downward axial force of axle core 3 pairs of bearings 2 can be reduced, be conducive to the life-span of improving bearing 2.When tool changing is complete, the piston 52 of piston cylinder up move and away from broaching tool assembly 4 time, floating pulling claw 7 and piston cylinder body 51 move downward under the elastic force effect of the second flexible member 9 and under the Action of Gravity Field of self, the pulling claw 7 that floats is displaced downwardly to lower limit position and drives supporting part 71 to leave stop collar 8, to remove the jacking force of the 71 pairs of stop collars 8 in supporting part, making axle core 3 be communicated with stop collar 8 can normal rotation.
Above-mentioned embodiment is only preferred embodiment of the present utility model; can not limit the scope of the utility model protection with this, change and the replacement of any unsubstantiality that those skilled in the art does on basis of the present utility model all belong to the utility model scope required for protection.
Claims (8)
1. the protection mechanism of main shaft, described main shaft comprises body, the bearing be arranged in body, be inserted in bearing inner race and the axle core that can rotate relative to body, the broaching tool assembly that can be arranged on axle in-core up or down, the piston cylinder moved downward by piston promotion broaching tool assembly, be arranged on the first flexible member between broaching tool assembly and axle core; This first flexible member is for providing the elastic stress of broaching tool assembly upwards pushing tow; It is characterized in that: this protection mechanism comprises the floating pulling claw be connected in piston cylinder body, the stop collar be connected on axle core; Described floating pulling claw is provided with the supporting part be positioned at below stop collar; The upper end of described body has support portion, and described support portion is fixed with backstay; Described floating pulling claw movable set on the securing lever, and can move making supporting part upwards support between the upper extreme position of stop collar and the lower limit position making supporting part leave stop collar; The upper end of described backstay is also provided with location division, described backstay is set with the second flexible member between location division and floating pulling claw, and this second flexible member is for providing the elastic stress of floating pulling claw towards lower limit position pushing tow.
2. the protection mechanism of main shaft as claimed in claim 1, is characterized in that: the bottom of described stop collar is threaded in axle in-core, described stop collar is provided with the through hole passed for broaching tool assembly upper end; Described broaching tool assembly is provided with the stage portion be positioned at below stop collar bottom, and the external diameter of this stage portion is greater than the internal diameter of stop collar through hole.
3. the protection mechanism of main shaft as claimed in claim 1 or 2, it is characterized in that: described stop collar is arranged with at least two checknut holes around the circumference of axle core, described checknut hole internal thread is connected with lock screw, and the lower end of each lock screw is threaded in each locating hole of axle core correspondingly.
4. the protection mechanism of main shaft as claimed in claim 1, it is characterized in that: described stop collar is provided with at least one group of screwed hole unit, described screwed hole unit comprises several balance screwed holes that the circumference around axle core arranges, this protection mechanism also comprises balance adjustment screws, described balance adjustment screws is provided with and the external screw thread balancing corresponding threaded holes and close.
5. the protection mechanism of main shaft as claimed in claim 1, is characterized in that: described first flexible member, the second flexible member are butterfly spring.
6. the protection mechanism of main shaft as claimed in claim 1, is characterized in that: the cooperation of described support portion and stop collar is formed as the position limiting structure that only can move between upper extreme position and lower limit position for limiting floating pulling claw.
7. the protection mechanism of main shaft as claimed in claim 1, is characterized in that: described support portion is fixed with several backstays, floats pulling claw movable set on all backstays; Each backstay is all set with the second flexible member.
8. the protection mechanism of main shaft as claimed in claim 7, is characterized in that: all backstays arrange around the circumference of axle core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420852511.1U CN204381957U (en) | 2014-12-26 | 2014-12-26 | The protection mechanism of main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420852511.1U CN204381957U (en) | 2014-12-26 | 2014-12-26 | The protection mechanism of main shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204381957U true CN204381957U (en) | 2015-06-10 |
Family
ID=53354712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420852511.1U Active CN204381957U (en) | 2014-12-26 | 2014-12-26 | The protection mechanism of main shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204381957U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111151770A (en) * | 2019-12-30 | 2020-05-15 | 广州市昊志机电股份有限公司 | Main shaft |
-
2014
- 2014-12-26 CN CN201420852511.1U patent/CN204381957U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111151770A (en) * | 2019-12-30 | 2020-05-15 | 广州市昊志机电股份有限公司 | Main shaft |
| CN111151770B (en) * | 2019-12-30 | 2022-03-08 | 广州市昊志机电股份有限公司 | Main shaft |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |