CN202715833U - Axial locking mechanism for machine tool spindle - Google Patents
Axial locking mechanism for machine tool spindle Download PDFInfo
- Publication number
- CN202715833U CN202715833U CN 201220355019 CN201220355019U CN202715833U CN 202715833 U CN202715833 U CN 202715833U CN 201220355019 CN201220355019 CN 201220355019 CN 201220355019 U CN201220355019 U CN 201220355019U CN 202715833 U CN202715833 U CN 202715833U
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- ring
- friction ring
- machine tool
- piston
- oil cylinder
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Abstract
The utility model discloses an axial locking mechanism for a machine tool spindle, comprising a spindle, a spindle box body, a fixed friction ring, a movable friction ring, a spring and an oil cylinder. One sides of the fixed friction ring and the movable friction rings are provided with friction plates which are matched in position and shape, the fixed friction ring is fixedly arranged at one end of the spindle, and the movable friction ring is sleeved on the spindle box body through a guide ring and positioned at one side of the fixed friction ring; the oil cylinder is arranged on the spindle box body, a piston is arranged in the oil cylinder, and one end of the piston is fixedly connected with the movable friction ring; and the spring positioned between the piston and one end surface of the oil cylinder is sleeved on the piston, and the other end of the oil cylinder is communicated with a pressure oil device. The axial locking mechanism has a simple and reasonable structure, and can provide the three working states of high speed running, half-clutch slow-speed rotation and total locking of the machine tool spindle, and simultaneously the rigidity of the spindle under various working states is improved; and the axial locking mechanism is suitably used as the axial locking device for the machine tool spindle, and the industrial production can be realized.
Description
Technical field
The utility model is a kind of machine tool chief axis axial locking mechanism, belongs to lathe drive mechanism technical field.
Background technology
Being engaged in the machine industry technical staff all knows; in production application; we often can use such situation; when making main shaft gyration arrive a certain position; positioning spindle no longer turns round it; or rotate very little angle in the long time period, and these main shafts all are to apply on the high-precision lathe, also require good rigidity except precision need to guarantee.At present both at home and abroad relatively more commonly used have following several: 1. tangential clamp mechanism; 2. hydraulic radial clamp mechanism; 3. gear clearance elimination mechanism; 4. worm and gear anti-backlash mechanism; 5. electric-machine directly-driven etc.Tangential clamp mechanism is applicable to the less situation of shaft diameter, such as the clamping of tailstock centre axle; The hydraulic radial clamp mechanism is to utilize hydraulic pressure to make the thin-walled parts in the hydraulic means that little distortion occur, and holds main shaft tightly, and is high to the technological requirement of thin-walled parts, easily causes the phenomenon that can't unclamp after the clamping, and the difficult half-clutch duty of realization and shutdown self-locking; To the high pulling torque main shaft, two driven pulley gear clearance elimination mechanisms can't meet the demands, and can only use two driving wheel anti-backlash mechanisms, and cost is high; The mechanism that uses twin worm is arranged in the worm and gear anti-backlash mechanism, and cost is higher comparatively speaking, adjusts relatively difficulty, use in addition the double pitch worm anti-backlash mechanism, but wearing and tearing is very fast, and service life is shorter, and corresponding loss of significance is also very fast; When electric-machine directly-driven was realized, the power of motor of requirement was larger, and caloric value is large, and cost is also relatively high.The described retaining mechanism of this patent has just solved above problem fully.
The utility model content
The purpose of this utility model be to overcome the deficiency of prior art and provide a kind of simple and reasonable, can provide that machine tool chief axis runs up, half-clutch at a slow speed revolution, lock three kinds of duties fully, simultaneously, the machine tool chief axis axial locking mechanism of Effective Raise main shaft rigidity under various duties.
A kind of machine tool chief axis axial locking mechanism of the utility model, comprise main shaft (1), main spindle box body (3), decide drag ring (8), dynamic friction ring (9), spring (12), oil cylinder (13), describedly decide drag ring (8), dynamic friction ring (9) is circulus, a side at its ring respectively is provided with a position, the friction plate that shape is complementary, describedly decide drag ring (8) and be packed in described main shaft (1) one end, described dynamic friction ring (9) is sleeved on the described main spindle box body (3) by guide ring (11), and be in and describedly decide drag ring (8) one sides, and describedly decide drag ring (8), the friction plate that (9) sides of dynamic friction ring arrange is mutually corresponding; Be provided with oil cylinder (13) at described main spindle box body (3), be provided with piston in the described oil cylinder; Described piston one end is fixedly connected with described dynamic friction ring (9); Also be set with spring (12) on described piston, described spring (12) is between described piston and (13) end faces of described oil cylinder, and the other end of described oil cylinder (13) is communicated with the peripheral hardware oil pump.
A kind of machine tool chief axis axial locking mechanism of the utility model is evenly equipped with at least 3 interfaces that are fixedly connected with described piston at the annulus of described dynamic friction ring (9), in described main spindle box body (3) coupling the oil cylinder corresponding with described interface and piston is arranged.
A kind of machine tool chief axis axial locking mechanism of the utility model, the excircle of described dynamic friction ring (9) is inlaid in the described guide ring (11).
A kind of machine tool chief axis axial locking mechanism of the utility model, between described guide ring (11) and described dynamic friction ring (9), be evenly equipped with at least 3 groups guiding steel ball (6), be provided with the baffle plate (5) corresponding with described guiding steel ball (6) at described guide ring (11) end face.
A kind of machine tool chief axis axial locking mechanism of the utility model is describedly decided drag ring (8), dynamic friction ring (9) is threaded connection or rivets respectively and is fixedly connected with described main shaft (1) or piston.
A kind of machine tool chief axis axial locking mechanism of the utility model is provided with radial support location bearing (2) between described main shaft (1) and the described main spindle box body (3).
A kind of machine tool chief axis axial locking mechanism of the utility model, described spring (12) is butterfly spring.
Guiding mechanism in the retaining mechanism of the utility model main shaft uses the steel ball guiding, makes the dynamic friction ring only have the free degree of main-shaft axis direction.Other guide waies such as similar use cylinder also belong to the interest field of this patent.
The retaining mechanism of the utility model main shaft, the locking power in the retaining mechanism is to use spring locking, uses hydraulic unlock.Similarly use hydraulic locking, spring unclamps the interest field that also belongs to this patent.
Operation principle of the present utility model is sketched in lower:
When lathe is not worked, there is not pressure oil in the oil cylinder, utilize the tension force of butterfly spring, pushing piston is in the oil cylinder oil inlet end, at this moment, pistons end drives dynamic friction ring (9) and decides drag ring and contact, because of the dynamic friction ring and be fixed between guide ring on the casing by the array steel ball in guiding, make the only remaining axial free degree of dynamic friction ring, realize the locking positioning of main shaft, be equivalent to main shaft and be connected with main spindle box body, thus the quiet rigidity of increase main shaft; When main shaft need to be done high speed rotary, by the oiling in the oil cylinder of peripheral hardware oil pump, piston, and then made the dynamic friction ring (9) that is installed on the main shaft and decides drag ring (8) realization and separate fully by effect lower compression butterfly spring at pressure, and main shaft can run up; By regulating the pressure of peripheral hardware oil pump, can control very easily butterfly spring and produce the minute-pressure contracting, existence because of flexible distortion between friction plate, dynamic friction ring (9) on the main shaft with decide drag ring (8) and can be in easily half-clutch state, realize that main shaft turns round at a slow speed, at this moment, can increase the damping of main shaft, thereby improve the moving rigidity of main shaft.Therefore, the utility model can provide machine tool chief axis each duty, but and the rigidity of each duty of Effective Raise main shaft.
Description of drawings
Accompanying drawing 1 is the main cutaway view of the utility model gyroaxis retaining mechanism.
Accompanying drawing 2 is the utility model gyroaxis retaining mechanism main shaft released state friction plate partial structurtes cutaway views.
Accompanying drawing 3 is the utility model gyroaxis retaining mechanism principal shaft locking state friction plate partial structurtes cutaway views.
Among the figure, 1-main shaft, 3-main spindle box body, 8-decide drag ring, 9-dynamic friction ring, 12-spring, 13-oil cylinder.
The specific embodiment
Below in conjunction with drawings and the specific embodiments the utility model is described in further details:
Referring to accompanying drawing 1,2,3, a kind of machine tool chief axis axial locking mechanism of the utility model, comprise main shaft (1), main spindle box body (3), decide drag ring (8), dynamic friction ring (9), spring (12), oil cylinder (13), describedly decide drag ring (8), dynamic friction ring (9) is circulus, a side at its ring respectively is provided with a position, the friction plate that shape is complementary, describedly decide drag ring (8) and be packed in described main shaft (1) one end, the excircle of described dynamic friction ring (9) is inlaid in the described guide ring (11) and is sleeved on the described main spindle box body (3), and be in and describedly decide drag ring (8) one sides, and describedly decide drag ring (8), the friction plate that (9) sides of dynamic friction ring arrange is mutually corresponding; Be provided with oil cylinder (13) at described main spindle box body (3), described oil cylinder is provided with piston in (13); Described piston one end is fixedly connected with described dynamic friction ring (9); Annulus at described dynamic friction ring (9) is evenly equipped with 3 interfaces that are fixedly connected with described piston, in described main spindle box body (3) coupling the oil cylinder corresponding with described interface and piston is arranged; Also be set with spring (12) on described piston, described spring (12) is between described piston and end face of described oil cylinder, and the other end of described oil cylinder is communicated with the peripheral hardware oil pump.
In the present embodiment, between described guide ring (11) and described dynamic friction ring (9), be evenly equipped with 3 groups of guiding steel balls (6), be provided with the baffle plate (5) corresponding with described guiding steel ball (6) at described guide ring (11) end face.
In the present embodiment, describedly decide drag ring (8), dynamic friction ring (9) is threaded connection or rivets respectively and is fixedly connected with described main shaft (1) or piston (13).
In the present embodiment, be provided with radial support location bearing (2) between described main shaft (1) and the described main spindle box body (3).
In the present embodiment, described spring (12) is butterfly spring.
When the utility model need to be done high speed rotary at main shaft, by the oilhole oil-feed, the compression butterfly spring makes the dynamic friction ring that is fixed on the piston and decides drag ring and separate fully, as shown in Figure 2, the dynamic friction ring is δ with deciding the drag ring gap, and main shaft can run up without constraint; When main shaft need to be fixed on a certain position, by the oilhole draining, butterfly spring resets and makes the dynamic friction ring that is fixed on the piston and decide drag ring and be combined, because of the dynamic friction ring and be fixed between guide ring on the casing by array steel ball guiding, make the only remaining axial free degree of dynamic friction ring, the dynamic friction ring is combined generation frictional force main shaft is fixed with deciding drag ring, as shown in Figure 3, be equivalent to main shaft and be connected with main spindle box body, thus the quiet rigidity of increase main shaft; When the adjustment of oil pressure that enters by oilhole arrives a certain pressure, when making butterfly spring produce the minute-pressure contracting, existence because of flexible distortion between friction plate, make the dynamic friction ring and decide drag ring and can be in half-clutch state, main shaft can be moving than slow-speed, at this moment, can increase the damping of main shaft, thereby improve the moving rigidity of main shaft.For prevent that steel ball from skidding off from gathering sill, add the prevention of steel ball baffle plate.
Claims (7)
1. machine tool chief axis axial locking mechanism, comprise main shaft (1), main spindle box body (3), decide drag ring (8), dynamic friction ring (9), spring (12), oil cylinder (13), it is characterized in that: describedly decide drag ring (8), dynamic friction ring (9) is circulus, a side at its ring respectively is provided with a position, the friction plate that shape is complementary, describedly decide drag ring (8) and be packed in described main shaft (1) one end, described dynamic friction ring (9) is sleeved on the described main spindle box body (3) by guide ring (11), and be in and describedly decide drag ring (8) one sides, and describedly decide drag ring (8), the friction plate that (9) sides of dynamic friction ring arrange is mutually corresponding; Be provided with oil cylinder (13) at described main spindle box body (3), described oil cylinder is provided with piston in (13); Described piston one end is fixedly connected with described dynamic friction ring (9); Also be set with spring (12) on described piston, described spring (12) is between described piston and (13) end faces of described oil cylinder, and the other end of described oil cylinder (13) is communicated with the pressure oil device.
2. a kind of machine tool chief axis axial locking mechanism according to claim 1, it is characterized in that: described spring (12) is butterfly spring.
3. a kind of machine tool chief axis axial locking mechanism according to claim 2 is characterized in that: be provided with radial support location bearing (2) between described main shaft (1) and the described main spindle box body (3).
4. a kind of machine tool chief axis axial locking mechanism according to claim 3, it is characterized in that: the annulus at described dynamic friction ring (9) is evenly equipped with at least 3 interfaces that are fixedly connected with described piston, in described main spindle box body (3) coupling the oil cylinder corresponding with described interface and piston is arranged.
5. a kind of machine tool chief axis axial locking mechanism according to claim 4, it is characterized in that: the excircle of described dynamic friction ring (9) is inlaid in the described guide ring (11).
6. a kind of machine tool chief axis axial locking mechanism according to claim 5, it is characterized in that: between described guide ring (11) and described dynamic friction ring (9), be evenly equipped with at least 3 groups guiding steel ball (6), be provided with the baffle plate (5) corresponding with described guiding steel ball (6) at described guide ring (11) end face.
7. a kind of machine tool chief axis axial locking mechanism according to claim 6 is characterized in that: describedly decide drag ring (8), dynamic friction ring (9) is threaded connection or rivets respectively and is fixedly connected with described main shaft (1) or piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220355019 CN202715833U (en) | 2012-07-20 | 2012-07-20 | Axial locking mechanism for machine tool spindle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220355019 CN202715833U (en) | 2012-07-20 | 2012-07-20 | Axial locking mechanism for machine tool spindle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202715833U true CN202715833U (en) | 2013-02-06 |
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ID=47617671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220355019 Expired - Fee Related CN202715833U (en) | 2012-07-20 | 2012-07-20 | Axial locking mechanism for machine tool spindle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202715833U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102728859A (en) * | 2012-07-20 | 2012-10-17 | 湖南金能达机电科技有限公司 | Axial locking mechanism of machine tool spindle |
| CN109048446A (en) * | 2018-10-09 | 2018-12-21 | 珠海格力电器股份有限公司 | Main shaft brake system |
| CN110842222A (en) * | 2019-10-25 | 2020-02-28 | 湖南中大创远数控装备有限公司 | Locking mechanism and main shaft structure |
| CN111975400A (en) * | 2020-07-24 | 2020-11-24 | 河北力准机械制造有限公司 | Rotary clamp device |
-
2012
- 2012-07-20 CN CN 201220355019 patent/CN202715833U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102728859A (en) * | 2012-07-20 | 2012-10-17 | 湖南金能达机电科技有限公司 | Axial locking mechanism of machine tool spindle |
| CN102728859B (en) * | 2012-07-20 | 2014-08-06 | 湖南金能达机电科技有限公司 | Axial locking mechanism of machine tool spindle |
| CN109048446A (en) * | 2018-10-09 | 2018-12-21 | 珠海格力电器股份有限公司 | Main shaft brake system |
| CN110842222A (en) * | 2019-10-25 | 2020-02-28 | 湖南中大创远数控装备有限公司 | Locking mechanism and main shaft structure |
| CN111975400A (en) * | 2020-07-24 | 2020-11-24 | 河北力准机械制造有限公司 | Rotary clamp device |
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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: 20130206 Termination date: 20150720 |
|
| EXPY | Termination of patent right or utility model |