CN203266219U - Main shaft floating loose knife device - Google Patents
Main shaft floating loose knife device Download PDFInfo
- Publication number
- CN203266219U CN203266219U CN 201320319918 CN201320319918U CN203266219U CN 203266219 U CN203266219 U CN 203266219U CN 201320319918 CN201320319918 CN 201320319918 CN 201320319918 U CN201320319918 U CN 201320319918U CN 203266219 U CN203266219 U CN 203266219U
- Authority
- CN
- China
- Prior art keywords
- main shaft
- cylinder
- broaching tool
- loose knife
- oil cylinder
- Prior art date
- 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 - Lifetime
Links
Images
Landscapes
- Milling, Broaching, Filing, Reaming, And Others (AREA)
Abstract
The utility model relates to a main shaft floating loose knife device and belongs to the field of machine tool components. The main shaft floating loose knife device helps to overcome the problem that a large load borne on a main shaft bearing leads to low precision of the bearing and short service lifetime in a knife loosing process of the present spindle. The main shaft floating loose knife device comprises a loose knife cylinder, an oil cylinder base, a broach shaft, and a belleville spring. A piston is arranged in the loose knife cylinder and an ejector rod is disposed at the lower end of the piston. The loose knife cylinder is installed on the oil cylinder on the oil cylinder base. The oil cylinder base is compressed tightly on a support rod via the spring. The support rod is connected with a spindle box. The broach shaft is arranged in shaft hole of the hollow main shaft hole in a penetration mode. The belleville spring is sleeved on the peripheral wall of the broach shaft. The top of the belleville spring is provided with a nut. A gap is disposed between the bottom surface of the ejector rod and the top surface of the nut. A broach pawl is arranged at the lower end of the broach shaft. An end cover is arranged at the top end of the hollow main shaft, connected with the hollow main shaft via a screw and is disposed above the oil cylinder base. The bottom surface of the end cover and the top surface of the oil cylinder are provided with mutual resistance parts. The main shaft floating loose knife device is capable of prolonging service lifetime and enhancing the precision of the bearing.
Description
Technical field
The utility model belongs to machine tool component device field, and is especially relevant with a kind of spindle floating knife loosening device.
Background technology
Main shaft is the core component of lathe, and the precision of main shaft has directly determined the precision of lathe integral body, and main shaft bearing is the key that affects the main shaft precision.In the process of existing machine tool chief axis pine cutter, loose cutter cylinder acts on main shaft bearing by butterfly spring, has increased the axial load of main shaft bearing, has affected bearing accuracy and service life.
The utility model content
The purpose of this utility model is intended to overcome the main shaft bearing load that exists in existing main shaft knife loosening process and causes the defective that bearing accuracy is not high, service life is short greatly, and a kind of spindle floating knife loosening device that does not affect main shaft bearing load in the main shaft knife loosening process is provided.
for this reason, the utility model is by the following technical solutions: a kind of spindle floating knife loosening device, comprise loose cutter cylinder, it is characterized in that, described device for loosing knife also comprises cylinder pedestal, broaching tool axle and butterfly spring, be movably equipped with a piston in described loose cutter cylinder, the lower surface of described piston is formed with a knock-pin, pine cutter cylinder is fixedly installed in the upper end of cylinder pedestal by screw, cylinder pedestal by spring compression on support bar, support bar is fixedly connected with main spindle box, the broaching tool axle is threaded onto in the axis hole of hollow main shaft, the broaching tool axle is positioned at hollow main shaft and can stretches, the length of broaching tool axle is less than the length of hollow main shaft, butterfly spring is set in the periphery wall of middle broaching tool axle, the top of butterfly spring is provided with nut, nut is fixedly connected with the broaching tool axle by screw thread, leave the gap between the bottom surface of knock-pin and the end face of nut, the lower end of broaching tool axle is provided with movable broaching tool pawl, be used for fixedly handle of a knife, the top of described hollow main shaft arranges end cap, and end cap is fixedly connected with hollow main shaft by screw, and described end cap is positioned at the top of cylinder pedestal, and the bottom surface of end cap and the end face of cylinder pedestal are provided with competing position.
As to technique scheme replenish and perfect, the utility model also comprises following technical characterictic.
Described loose cutter cylinder is screwed by base with cylinder pedestal and is connected.
When the utility model uses, when pine cutter cylinder was received the main shaft knife loosening signal, the piston in loose cutter cylinder promoted knock-pin and moves downward, and contacts with the upper end nut of broaching tool axle, the broaching tool axle is subject to active force and moves downward, and cylinder pedestal also was subject to downward active force and contacted with the end cap of hollow main shaft this moment; Leave the gap between end face due to the bottom surface of knock-pin and nut, the knock-pin motion is with air compressing, compression is empty produces one to loose cutter cylinder bottom active force facing up, cylinder pedestal also is subject to active force upwards simultaneously, this moment the cylinder pedestal Compress Spring, cylinder pedestal moves upward, until cylinder pedestal contacts with end cap; This moment, the broaching tool axle compressed butterfly spring by nut, and butterfly spring will be subject to downward responsive to axial force to main shaft.This moment, cylinder pedestal made the main shaft stress balance can for the axial force that makes progress of an opposite sign but equal magnitude of main shaft because cylinder pedestal contacts with end cap; This moment, loose cutter process just formed internal action power between loose cutter cylinder, cylinder pedestal, broaching tool axle, nut, butterfly spring, pad, hollow main shaft, end cap to the pressure of butterfly spring; no longer outwards transmit; thereby make main shaft bearing avoid bearing the extra axial force that loose cutter process is brought, main shaft bearing has obtained effective protection.
Use the utility model can reach following beneficial effect: the utility model is repealed by implication to the active force between hollow main shaft by cylinder pedestal and broaching tool axle; thereby no longer stressed to the outside; realize the protection to main shaft bearing, improved life-span and the precision of bearing.
Description of drawings
Fig. 1 is structural representation of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in detail.
as shown in Figure 1, the utility model comprises loose cutter cylinder 1, cylinder pedestal 3, broaching tool axle 6 and butterfly spring 7, be movably equipped with a piston in described loose cutter cylinder 1, the lower surface of described piston is formed with a knock-pin 11, pine cutter cylinder 1 is screwed by base 10 with cylinder pedestal 3 and is connected, cylinder pedestal 3 is pressed on support bar by spring 9, support bar is fixedly connected with main spindle box, broaching tool axle 6 is threaded onto in the axis hole of hollow main shaft 4, the length of broaching tool axle 6 is less than the length of hollow main shaft 4, butterfly spring 7 is set in the periphery wall of broaching tool axle 6, the top of butterfly spring 7 is provided with nut 8, nut 8 is fixedly connected with broaching tool axle 6 by screw thread, leave certain distance between the end face of the bottom surface of knock-pin 11 and nut 8, the lower end of broaching tool axle 6 is provided with movable broaching tool pawl 5, the top of described hollow main shaft 4 arranges end cap 2, and end cap 2 is fixedly connected with hollow main shaft 4 by screw, and described end cap 2 is positioned at the top of cylinder pedestal 3, and the end face of the bottom surface of end cap 2 and cylinder pedestal 3 is provided with competing position.
When the utility model uses, when pine cutter cylinder 1 is received the main shaft knife loosening signal, piston in pine cutter cylinder 1 promotes knock-pin and moves downward, contact with the upper end nut of broaching tool axle 6, broaching tool axle 6 is subject to active force and moves downward, and cylinder pedestal 3 also was subject to downward active force and contacted with the end cap of hollow main shaft this moment; Leave certain distance between end face due to the bottom surface of knock-pin and nut, the knock-pin motion is with air compressing, compression is empty produces one to loose cutter cylinder bottom active force facing up, cylinder pedestal 3 also is subject to active force upwards simultaneously, this moment cylinder pedestal 3 Compress Springs, cylinder pedestal 3 moves upward, until cylinder pedestal 3 contacts with end cap; This moment, broaching tool axle 6 compressed butterfly spring 7 by nut, and butterfly spring 7 will be subject to downward responsive to axial force to main shaft.This moment, cylinder pedestal made the main shaft stress balance can for the axial force that makes progress of an opposite sign but equal magnitude of main shaft because cylinder pedestal 3 contacts with end cap; This moment, loose cutter process just formed internal action power between loose cutter cylinder 1, cylinder pedestal 3, broaching tool axle 6, nut 8, butterfly spring 7, pad, hollow main shaft 4, end cap to the pressure of butterfly spring; no longer outwards transmit; thereby make main shaft bearing avoid bearing the extra axial force that loose cutter process is brought, main shaft bearing has obtained effective protection.
Claims (2)
1. spindle floating knife loosening device, comprise loose cutter cylinder (1), it is characterized in that: described device for loosing knife also comprises cylinder pedestal (3), broaching tool axle (6) and butterfly spring (7), be movably equipped with a piston in described loose cutter cylinder (1), the lower surface of described piston is formed with a knock-pin (11), pine cutter cylinder (1) is fixedly installed in the upper end of cylinder pedestal (3) by screw, cylinder pedestal (3) is pressed on support bar by spring (9), support bar is fixedly connected with main spindle box, broaching tool axle (6) is threaded onto in the axis hole of hollow main shaft (4), butterfly spring (7) is set in the periphery wall of broaching tool axle (6), the top of butterfly spring (7) is provided with nut (8), nut (8) is fixedly connected with broaching tool axle (6) by screw thread, leave the gap between the end face of the bottom surface of knock-pin (11) and nut (8), the lower end of broaching tool axle (6) is provided with movable broaching tool pawl (5), the top of described hollow main shaft (4) arranges end cap (2), end cap (2) is fixedly connected with hollow main shaft (4) by screw, described end cap (2) is positioned at the top of cylinder pedestal (3), and the end face of the bottom surface of end cap (2) and cylinder pedestal (3) is provided with competing position.
2. a kind of spindle floating knife loosening device according to claim 1, it is characterized in that: described loose cutter cylinder (1) is screwed by base (10) with cylinder pedestal (3) and is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320319918 CN203266219U (en) | 2013-06-04 | 2013-06-04 | Main shaft floating loose knife device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320319918 CN203266219U (en) | 2013-06-04 | 2013-06-04 | Main shaft floating loose knife device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203266219U true CN203266219U (en) | 2013-11-06 |
Family
ID=49496708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320319918 Expired - Lifetime CN203266219U (en) | 2013-06-04 | 2013-06-04 | Main shaft floating loose knife device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203266219U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107322105A (en) * | 2017-08-11 | 2017-11-07 | 浙江振兴阿祥集团有限公司 | Chain digital control gear hobbing machine hobboing cutter main shaft knife loosening mechanism |
| CN108747611A (en) * | 2018-04-25 | 2018-11-06 | 科德数控股份有限公司 | It can high-speed rotating tool-broaching mechanism |
| CN110682142A (en) * | 2019-10-10 | 2020-01-14 | 浙江日发航空数字装备有限责任公司 | Electric spindle hydraulic floating tool loosening device |
-
2013
- 2013-06-04 CN CN 201320319918 patent/CN203266219U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107322105A (en) * | 2017-08-11 | 2017-11-07 | 浙江振兴阿祥集团有限公司 | Chain digital control gear hobbing machine hobboing cutter main shaft knife loosening mechanism |
| CN108747611A (en) * | 2018-04-25 | 2018-11-06 | 科德数控股份有限公司 | It can high-speed rotating tool-broaching mechanism |
| CN110682142A (en) * | 2019-10-10 | 2020-01-14 | 浙江日发航空数字装备有限责任公司 | Electric spindle hydraulic floating tool loosening device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201815844U (en) | Bearing elastic pressing rod used for motorcycle engine case body bearing press-mounting device | |
| CN201579581U (en) | Integral type rubber steel sleeve pressing mechanism | |
| CN203266219U (en) | Main shaft floating loose knife device | |
| CN201030490Y (en) | Main axle floating cutter clamping device of numerical control machine | |
| CN203357069U (en) | Eccentric wheel clamp | |
| CN204603726U (en) | A kind of hub bearing press-loading apparatus | |
| CN204140736U (en) | Anti-inclining spring | |
| CN202388201U (en) | Bearing device of power steering device for pressing and installing side cover | |
| CN202556123U (en) | Main shaft floating tool-loosing mechanism for vertical machining centre | |
| CN102001009A (en) | Automatic knife-forging unloading device for processing central main spindle | |
| CN201950505U (en) | Release cutter unloading mechanism of spindle | |
| CN202200260U (en) | Cylinder liner pressing device | |
| CN205465699U (en) | Grinding head motor | |
| CN104742089A (en) | Thread rotation type compressor for plunger cylinder spring | |
| CN201815907U (en) | Automatic forging and unloading device for processing central spindle | |
| CN203254163U (en) | Static pressure thick guiding rail clamping device | |
| CN204082943U (en) | A kind of Separated type spring Die for pressing cap of pressing bearing dust cover | |
| CN203875353U (en) | Spindle box | |
| CN202963945U (en) | Riveting and material-stripping mechanism for end cover of dust collector motor | |
| CN204503937U (en) | Electric motor end cap Counterboring apparatus | |
| CN204270828U (en) | A kind of hold down gag | |
| CN203292337U (en) | Die balance protection device | |
| CN203266818U (en) | Timber cutting apparatus | |
| CN203636775U (en) | Threaded rotation type compressor for plunger cylinder spring | |
| CN202571765U (en) | Starter rear end cover oil bush press-in device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131106 |
|
| CX01 | Expiry of patent term |