CN208712875U - A kind of machine tool chief axis forced locking device - Google Patents
A kind of machine tool chief axis forced locking device Download PDFInfo
- Publication number
- CN208712875U CN208712875U CN201820625187.8U CN201820625187U CN208712875U CN 208712875 U CN208712875 U CN 208712875U CN 201820625187 U CN201820625187 U CN 201820625187U CN 208712875 U CN208712875 U CN 208712875U
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- CN
- China
- Prior art keywords
- friction
- hydraulic cylinder
- plunger rod
- machine tool
- tool chief
- 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 - Fee Related
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- 239000012530 fluid Substances 0.000 claims abstract description 22
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 5
- 239000002828 fuel tank Substances 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 3
- 239000003921 oil Substances 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Abstract
The utility model discloses a kind of machine tool chief axis forced locking devices, including friction locking unit and fluid pressure drive device, friction locking unit includes being fixed on main shaft and can having the pyramid type rubbing surface for cooperating and can not be self-locking with the external friction tapered sleeve that it makes rotating motion and with the coaxial arrangement of external friction tapered sleeve and the interior friction taper sleeve axially movable relative to its, interior friction taper sleeve and external friction tapered sleeve；Fluid pressure drive device includes plunger rod, hydraulic cylinder and is placed on plunger rod for the return spring that resets to it, hydraulic cylinder is equipped with hydraulic fluid port far from the side of interior friction taper sleeve, one end of plunger rod is fixedly connected with interior friction taper sleeve, and the other end of plunger rod is contained in hydraulic cylinder and drives its movement by hydraulic oil.This machine tool chief axis forced locking device is not easy to wear and structure is simple.
Description
Technical field
The utility model relates to a kind of machine tool chief axis forced locking devices, belong to apparatus for locking main shaft technical field of structures.
Background technique
Currently, when the processing such as the machine tool chief axis with C s function needs to drill to workpiece in a certain angle, groove milling,
After C-axis scale division positioning, principal shaft locking should be carried out, in case cutting force causes vibration or Influence of Displacement machining accuracy.Traditional
Apparatus for locking main shaft has the locking of friction plate circumference and the locking of three fluted disc fixed angles etc..The locking of friction plate circumference is applied using friction plate
Add frictional force, but friction plate is easy to wear in retaining mechanism, performance is unstable, influences principal shaft locking precision.Three fluted disc structures are only
It is able to achieve fixed angle locking, locking at any angle will also be by other mechanisms and retaining mechanism complexity.
Summary of the invention
The purpose of the utility model is to provide a kind of simple machine tool chief axis forced locking devices of not easy to wear and structure.
The technical solution of the utility model is: a kind of machine tool chief axis forced locking device, including friction locking unit and liquid
Hydraulic driver, wherein
The friction locking unit include be fixed on the main shaft and can with the external friction tapered sleeve that it makes rotating motion, with
And with external friction tapered sleeve coaxial arrangement and the interior friction taper sleeve axially movable relative to its, the interior friction taper sleeve and outer
Friction taper sleeve has the pyramid type rubbing surface for cooperating and can not be self-locking, and external friction tapered sleeve is by pyramid type rubbing surface to heart set
On interior friction taper sleeve；
The fluid pressure drive device include plunger rod, hydraulic cylinder and be placed on the plunger rod for it is resetted return
Position spring, the hydraulic cylinder are equipped with hydraulic fluid port far from the side of interior friction taper sleeve, and one end of the plunger rod and interior friction taper sleeve are solid
Fixed connection, the other end of plunger rod, which is contained in hydraulic cylinder, drives its movement by hydraulic oil, and the plunger rod drives when mobile
Interior friction taper sleeve is mobile and then locks or unlock main shaft.
Preferably, the fluid pressure drive device further includes being installed in hydraulic cylinder and being arranged in the guide rod on plunger rod.
Preferably, the guide rod is provided with more.
Preferably, the friction locking unit further includes the terminal pad between main shaft and external friction tapered sleeve, the company
The one end for connecing disk is installed on spindle nose by the first screw, and the other end of the terminal pad is bored by the second screw and external friction
Set connection.
Preferably, the interior friction taper sleeve is placed on plunger rod, is provided with flat key between the plunger rod and interior friction taper sleeve
Circumferentially positioned to realize, the plunger rod is connect with interior friction taper sleeve by third screw and stepped hole to realize axially position.
Preferably, the hydraulic cylinder includes hydraulic cylinder and the hydraulic cylinder for being placed on hydraulic cylinder opening, this is hydraulic
Cylinder cap is equipped with the first spring mounting groove for accommodating return spring, and the plunger rod is equipped with far from the side of interior friction taper sleeve
Accommodate the second spring mounting groove of return spring.
Preferably, the hydraulic fluid port is connect by pipeline with fuel tank, and one-way throttle valve, electromagnetism are disposed on the pipeline
Valve and hydraulic pump, the solenoid valve are two-position three way magnetic valve, and a channel of the solenoid valve connect with hydraulic pump, in addition two
One connect with fuel tank in a channel, another connect through one-way throttle valve with hydraulic cylinder hydraulic fluid port.
Preferably, machine tool chief axis forced locking device further includes the overflow for being installed on pipeline and being arranged in parallel with hydraulic pump
Valve.
Preferably, there are two the one-way throttle valve settings, two one-way throttle a positive and a negative installations.
The beneficial effects of the utility model are: the utility model proposes machine tool chief axis forced locking device, in lathe master
After axis orientation standard is stopped, the present apparatus it is dynamic can to carry out locking to main shaft in any angular position by the cooperation of inside and outside friction taper sleeve
Make, and main shaft orientation precision will not be had an impact, performance is stablized.In addition, pyramid type frictional fit is compared to same elasticity
Friction plate cooperation has bigger matching area, and axial force can be enlarged into the power of radial effect, and locking more may be used
It leans on.This machine tool chief axis forced locking device also has the advantages that structure is simple and nonabradable.
Detailed description of the invention
Fig. 1 is schematic cross-sectional view of the utility model under principal shaft locking state；
Fig. 2 is schematic cross-sectional view of the utility model under main shaft relaxation state；
Fig. 3 is the schematic diagram of fluid pressure drive device in the utility model.
In figure: 1- main shaft；The first screw of 2-；The second screw of 3-；4- third screw；Friction taper sleeve in 5-；6- flat key；7- is led
Bar；8- hydraulic cylinder；9- hydraulic cylinder；10- return spring；11- plunger rod；12- external friction tapered sleeve；13- terminal pad；14- is mono-
To throttle valve；15- solenoid valve；16- overflow valve；17- hydraulic pump；18- fuel tank.
Specific embodiment
It should be appreciated that specific embodiment described herein is only used to explain the utility model, it is not used to limit this
Utility model.
It should be noted that in the description of the present invention, term " transverse direction ", " longitudinal direction ", "upper", "lower", " preceding ",
The orientation or positional relationship of the instructions such as " rear ", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" be based on
Orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, and is not instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
The limitation of the utility model.In addition, term " first ", " second " etc. are used for description purposes only, and it should not be understood as instruction or dark
Show relative importance.
Referring to figs. 1 to Fig. 3, in this preferred embodiment, a kind of machine tool chief axis forced locking device, including friction locking unit
And fluid pressure drive device, wherein
Friction locking unit includes being fixed on main shaft 1 and can be with external friction tapered sleeve 12 that it makes rotating motion, Yi Jiyu
The coaxial arrangement of external friction tapered sleeve 12 and the interior friction taper sleeve 5 axially movable relative to its, interior friction taper sleeve 5 and external friction tapered sleeve
Including 12 there is the pyramid type rubbing surface for cooperating and can not be self-locking, external friction tapered sleeve 12 to be covered by pyramid type rubbing surface to the heart
On friction taper sleeve 5；
Fluid pressure drive device includes plunger rod 11, hydraulic cylinder and is placed on plunger rod 11 for the return bullet that resets to it
Spring 10, hydraulic cylinder are equipped with hydraulic fluid port far from the side of interior friction taper sleeve 5, and one end of plunger rod 11 is fixedly connected with interior friction taper sleeve 5,
The other end of plunger rod 11, which is contained in hydraulic cylinder, drives its movement by hydraulic oil, and interior cone of friction is driven when plunger rod 11 is mobile
Set 5 is mobile and then locks or unlock main shaft 1.
Further, fluid pressure drive device further includes being installed on the guide rod 7 in hydraulic cylinder and being arranged on plunger rod 11.It leads
Bar 7 is used to prevent the plunger rod 11 in 1 stress of main shaft from rotating relative to hydraulic cylinder 8.In the present embodiment, guide rod 7 is provided with more
Root.
Further, friction locking unit further includes the terminal pad 13 between main shaft 1 and external friction tapered sleeve 12, connection
One end (be equipped with counter sink) of disk 13 passes through the first screw 2(cylindrical screw) be installed on 1 end of main shaft, terminal pad 13 it is another
End is connect by the second screw 3 with external friction tapered sleeve 12.
Specifically, interior friction taper sleeve 5 is placed on plunger rod 11, is provided between the plunger rod 11 and interior friction taper sleeve 5 flat
Key 6 is circumferentially positioned to realize, plunger rod 11 is connect with interior friction taper sleeve 5 by third screw 4 and stepped hole axial fixed to realize
Position.By the way that flat key 6 is arranged, to prevent the interior generation of friction taper sleeve 5 when 1 stress of main shaft from circumferentially rotating.
Hydraulic cylinder includes hydraulic cylinder 8 and the hydraulic cylinder 9 for being placed on 8 opening of hydraulic cylinder, is set on the hydraulic cylinder 9
There is the first spring mounting groove for accommodating return spring 10, plunger rod 11 is equipped with far from the side of interior friction taper sleeve 5 and accommodates back
The second spring mounting groove of position spring 10.The both ends of return spring 10 are respectively accommodated in the first spring mounting groove and second spring peace
In tankage.
Hydraulic fluid port is connect by pipeline with fuel tank 18, and one-way throttle valve 14, solenoid valve 15 and liquid are disposed on pipeline
Press pump 17, solenoid valve 15 are two-position three way magnetic valve, and a channel of the solenoid valve 15 is connect with hydraulic pump 17, other two is logical
One connect with fuel tank 18 in road, another connect through one-way throttle valve 14 with hydraulic cylinder hydraulic fluid port.
Further, this machine tool chief axis forced locking device further includes being installed on pipeline and being arranged in parallel with hydraulic pump 17
Overflow valve 16.Overflow valve 16 has the function of overload protection, to ensure that the work of this machine tool chief axis forced locking device can
It leans on.
There are two the settings of one-way throttle valve 14, the installation of two one-way throttle a positive and a negative.One-way throttle valve 14 can control into
Oily, oil return stability of flow guarantees stable working operation.
The working principle of this machine tool chief axis forced locking device is as follows.
As shown in Figure 1, inject hydraulic oil into the right chamber of hydraulic cylinder 8 by hydraulic fluid port, thus push plunger rod 11 along
Guide rod 7 is overhanging, and when it reaches left limit, interior friction taper sleeve 5 is locked with external friction tapered sleeve 12 by pyramid type rubbing surface.
At this point, return spring 10 is in compressed extreme position.Flat key 6 can prevent interior friction taper sleeve 5 when 1 stress of main shaft from generating week
To rotation.Guide rod 7 can prevent plunger rod 11 when 1 stress of main shaft from rotating in hydraulic cylinder 8.
As shown in Fig. 2, plunger rod 11 is under the restoring force effect of return spring 10 when hydraulic cylinder 8 connects fuel tank 18
It moves horizontally to the right, returns to initial position.Since pyramid type rubbing surface can not be self-locking, interior friction taper sleeve 5 and external friction tapered sleeve 12
Separation, main shaft 1 are relaxed the rotary state that affranchises.
The machine tool chief axis forced locking device that the present embodiment proposes orients after standard stops in main shaft 1, and the present apparatus can pass through
The cooperation of inside and outside friction taper sleeve 12 carries out locking action to main shaft 1 in any angular position, and will not be to 1 positioning accuracy of main shaft
It has an impact, performance is stablized.In addition, the cooperation of pyramid type rubbing surface has bigger match compared to the cooperation of same elastic-friction piece
Area is closed, and axial force can be enlarged into the power of radial effect, is locked more reliable.This machine tool chief axis automatically lock dress
Setting also has the advantages that structure is simple and nonabradable.
The above is only the preferred embodiments of the utility model, and therefore it does not limit the scope of the patent of the utility model, all
Equivalent structure transformation made based on the specification and figures of the utility model, it is relevant to be applied directly or indirectly in other
Technical field is also included in the patent protection scope of the utility model.
Claims (9)
1. a kind of machine tool chief axis forced locking device, it is characterised in that: including friction locking unit and fluid pressure drive device；
The friction locking unit includes being fixed on the main shaft and can be with external friction tapered sleeve that it makes rotating motion, Yi Jiyu
The external friction tapered sleeve coaxial arrangement and the interior friction taper sleeve axially movable relative to its, the interior friction taper sleeve and external friction
Including there is tapered sleeve the pyramid type rubbing surface for cooperating and can not be self-locking, external friction tapered sleeve to be covered by pyramid type rubbing surface to the heart
On friction taper sleeve；
The fluid pressure drive device includes plunger rod, hydraulic cylinder and is placed on the plunger rod for the return bullet that resets to it
Spring, the hydraulic cylinder are equipped with hydraulic fluid port, one end of the plunger rod and the fixed company of interior friction taper sleeve far from the side of interior friction taper sleeve
It connects, the other end of plunger rod, which is contained in hydraulic cylinder, drives its movement by hydraulic oil, rubs in drive when the plunger rod is mobile
Wipe the mobile locking in turn of tapered sleeve or unlock main shaft.
2. machine tool chief axis forced locking device according to claim 1, it is characterised in that: the fluid pressure drive device also wraps
It includes and is installed in hydraulic cylinder and is arranged in the guide rod on plunger rod.
3. machine tool chief axis forced locking device according to claim 2, it is characterised in that: the guide rod is provided with more.
4. machine tool chief axis forced locking device according to claim 1, it is characterised in that: the friction locking unit also wraps
The terminal pad between main shaft and external friction tapered sleeve is included, one end of the terminal pad is installed on spindle end by the first screw
The other end in portion, the terminal pad is connect by the second screw with external friction tapered sleeve.
5. machine tool chief axis forced locking device according to claim 1, it is characterised in that: the interior friction taper sleeve is placed on column
On stopper rod, it is circumferentially positioned to realize to be provided with flat key between the plunger rod and interior friction taper sleeve, the plunger rod and interior cone of friction
Set is connected with stepped hole by third screw to realize axially position.
6. machine tool chief axis forced locking device according to claim 1, it is characterised in that: the hydraulic cylinder includes hydraulic cylinder
Body and the hydraulic cylinder for being placed on hydraulic cylinder opening, the hydraulic cylinder are equipped with the first spring for accommodating return spring
Mounting groove, the plunger rod are equipped with the second spring mounting groove for accommodating return spring far from the side of interior friction taper sleeve.
7. machine tool chief axis forced locking device according to claim 1, it is characterised in that: the hydraulic fluid port passes through pipeline and oil
Case connects, and one-way throttle valve, solenoid valve and hydraulic pump are disposed on the pipeline, and the solenoid valve is two-position three way electricity
One channel of magnet valve, the solenoid valve is connect with hydraulic pump, and one connect with fuel tank in other two channel, another is through unidirectional
Throttle valve is connect with hydraulic cylinder hydraulic fluid port.
8. machine tool chief axis forced locking device according to claim 7, it is characterised in that: further include be installed on pipeline and
The overflow valve being arranged in parallel with hydraulic pump.
9. machine tool chief axis forced locking device according to claim 7, it is characterised in that: the one-way throttle valve is provided with
Two, two one-way throttle a positive and a negative installations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820625187.8U CN208712875U (en) | 2018-04-28 | 2018-04-28 | A kind of machine tool chief axis forced locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820625187.8U CN208712875U (en) | 2018-04-28 | 2018-04-28 | A kind of machine tool chief axis forced locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208712875U true CN208712875U (en) | 2019-04-09 |
Family
ID=65970080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820625187.8U Expired - Fee Related CN208712875U (en) | 2018-04-28 | 2018-04-28 | A kind of machine tool chief axis forced locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208712875U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110280805A (en) * | 2019-06-25 | 2019-09-27 | 永康市晓诚电器有限公司 | A kind of electric drill of the protecting against shock that band is self-locking protection |
| CN111360554A (en) * | 2020-02-21 | 2020-07-03 | 上海交大智邦科技有限公司 | Gravity shaft locking device of numerical control machine tool |
| CN111408743A (en) * | 2020-05-13 | 2020-07-14 | 浙江双正科技股份有限公司 | Machine tool |
-
2018
- 2018-04-28 CN CN201820625187.8U patent/CN208712875U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110280805A (en) * | 2019-06-25 | 2019-09-27 | 永康市晓诚电器有限公司 | A kind of electric drill of the protecting against shock that band is self-locking protection |
| CN110280805B (en) * | 2019-06-25 | 2020-07-14 | 永康市晓诚电器有限公司 | Electric drill with self-locking anti-impact protection function |
| CN111360554A (en) * | 2020-02-21 | 2020-07-03 | 上海交大智邦科技有限公司 | Gravity shaft locking device of numerical control machine tool |
| CN111360554B (en) * | 2020-02-21 | 2021-01-22 | 上海交大智邦科技有限公司 | Gravity shaft locking device of numerical control machine tool |
| CN111408743A (en) * | 2020-05-13 | 2020-07-14 | 浙江双正科技股份有限公司 | Machine tool |
| CN111408743B (en) * | 2020-05-13 | 2021-05-11 | 浙江双正科技股份有限公司 | Machine tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190409 Termination date: 20200428 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |