CN201863036U - Floating unloading type device for loosening cutter on main shaft - Google Patents
Floating unloading type device for loosening cutter on main shaft Download PDFInfo
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- CN201863036U CN201863036U CN2010206243517U CN201020624351U CN201863036U CN 201863036 U CN201863036 U CN 201863036U CN 2010206243517 U CN2010206243517 U CN 2010206243517U CN 201020624351 U CN201020624351 U CN 201020624351U CN 201863036 U CN201863036 U CN 201863036U
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- main shaft
- pressurized cylinder
- bearing plate
- cylinder bearing
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Abstract
The utility model discloses a floating unloading type device for loosening a cutter on a main shaft. The floating unloading type device mainly comprises a main shaft box body (8) provided therein with a main shaft (7), a cutter pulling lever (6) which is arranged inside the main shaft (7) and can move up and down along the center line of the main shaft, a pressurizing cylinder (1) fixed together with a pressurizing cylinder bearing plate (2), and a sleeve (4) arranged between the pressurizing cylinder bearing plate (2) and the main shaft box body (8). A guide bolt (3) arranged on the pressurizing cylinder bearing plate (2) passes through the sleeve (4) and then is fixedly connected with the main shaft box body (8). The device is characterized in that an elastic element (9) which is positioned between the cap of the guide bolt (3) and the pressurizing cylinder bearing plate (2) for cushioning is also sleeved on the screw rod of the guide bolt (3). The floating unloading type device provided by the utility model not only has a simple overall structure, but also can effectively cushion the generated impact force, so as to greatly reduce the influence of the impact force on the cutter pulling lever and effectively prolong the service life of the cutter pulling lever.
Description
Technical field
The utility model relates to a kind of device for loosing knife, specifically is meant a kind of unsteady discharging type main shaft device for loosing knife.
Background technology
The automatic loose broaching tool action of main shaft of numerical control machine tool is a requisite function in the machine tooling, main shaft of numerical control machine tool pine cutter action at present all realizes by automatic device for loosing knife, promptly when lathe is carried out tool changing, must be at first by the cutter on the main shaft could being taken off after the loose cutter action, after treating that main shaft is changed new cutter, carry out the broaching tool action again, will just can process after the tension of the cutter on the main shaft.Present lathe is carrying out tool changing when action for main shaft, common structure all is the broaching tool bar that at first promotes to have disk spring by the action of loose knife oil cylinder, the chuck of lathe clamping cutter is unclamped carry out loose cutter action; After new cutter is changed on the main shaft, the reverse oil-feed of loose knife oil cylinder, piston rollback, broaching tool bar rollback and realize straining the purpose of cutter under the effect of butterfly spring.
Yet, present this automatic device for loosing knife in use, because its pressurized cylinder piston bar moves down fast when touching the main spindle broach bar under the effect of ambient pressure and can produce bigger impulsive force, and this impulsive force will act directly on main shaft and the main shaft support bearing; Simultaneously, because this pressurized cylinder piston bar still can continue to move down under inertia, thereby compression is arranged on the disk spring on the main spindle broach bar, the final loose cutter power of about 4500kgf or 6000kgf is all acted on the spring bearing of main shaft, therefore the precision and the service life that can seriously influence and reduce main shaft.
The utility model content
The purpose of this utility model is to overcome present automatic device for loosing knife in use because the impact of its pressurized cylinder piston bar and direct or indirect the acting on main shaft and the main shaft bearing of pressure meeting, shorten its service life, reduce the defective of main shaft precision, a kind of impulsive force that can not only effectively cushion this pressurized cylinder piston bar is provided, and can also unloads the Song Daoli that acts on the main shaft bearing, significantly improve the unsteady discharging type main shaft device for loosing knife in main shaft precision and main shaft bearing service life.
The purpose of this utility model is achieved through the following technical solutions: a kind of unsteady discharging type main shaft device for loosing knife, mainly by inside be provided with main shaft the main shaft casing, be arranged on the inner and broaching tool bar that can move up and down along its center line of this main shaft, and the pressurized cylinder that is solidified as a whole of pressurized cylinder bearing plate and be arranged at the pressurized cylinder bearing plate and the main shaft casing between sleeve form, be arranged at and be fixedly linked with the main shaft casing after guide blot on the pressurized cylinder bearing plate passes this sleeve.Simultaneously, also be with the elastic component that between the cap head of guide blot and pressurized cylinder bearing plate, plays cushioning effect on the screw rod of guide blot.
In order to realize that better the utility model, described elastic component are metal compression spring.
As required, this elastic component also can be the cylinder of the band through hole made by rubber or sponge elastomer.
Further, on main shaft, also be provided with cannelure, on the lower surface of pressurized cylinder bearing plate, also be fixed with two blocks of semi-circular left-hand thread plates that are held in this cannelure notch simultaneously.Simultaneously, can there be the preset clearance in relative rotation that rubs between the main shaft and semi-circular left-hand thread plate also being provided with between this semi-circular left-hand thread plate and the cannelure when guaranteeing this device for loosing knife in not tool changing.
The utility model is compared than prior art, has the following advantages and beneficial effect:
(1) not only overall structure is comparatively simple for the utility model, and owing between guide blot and pressurized cylinder bearing plate, also be provided with elastic component, therefore when moving down fast under the effect of pressurized cylinder piston bar at ambient pressure when touching the main spindle broach bar, this elastic component can effectively cushion the impulsive force that the pressurized cylinder piston bar is produced, thereby significantly reduce of the influence of this impulsive force, effectively prolong its service life the broaching tool bar.
(2) the utility model also is fixed with a pair of semi-circular left-hand thread plate that is connected with the cannelure of main shaft on the lower surface of pressurized cylinder bearing plate; thereby when loose cutter, make this pressurized cylinder bearing plate and main shaft tighten together and no longer include relative motion; therefore when continuing to move down under the effect of pressure cylinder inner piston rod at extraneous pressure medium; final 4500kgf or 6000kgf pine cutter power all act on main shaft pull bar and the butterfly spring; and can not act on the main shaft bearing; therefore can effectively protect the bearing of main shaft not to be subjected to frequently exerting pressure of external force, can prolong the precision of its main shaft life-span and raising main shaft significantly.
(3) because the utility model also is provided with preset clearance between semi-circular left-hand thread plate and main shaft, therefore can guarantee when not carrying out loose cutter action, not having friction between main shaft and the semi-circular left-hand thread plate relatively rotates, again can be when carrying out the action of loose cutter, guarantee that main shaft and pressurized cylinder bearing plate are fixed together to no longer include relative motion.Therefore,, all can effectively unload the impulsive force that acts on the main shaft, prolong the service life of main shaft, improve its machining accuracy no matter the utility model is when carrying out the action of loose cutter or when not carrying out loose cutter action.
Description of drawings
Fig. 1 is an overall structure intention of the present utility model.
Fig. 2 is a concrete structure for amplifying schematic diagram of the present utility model.
Fig. 3 is a semi-circular left-hand thread plate structure schematic diagram of the present utility model.
The specific embodiment
Below in conjunction with embodiment the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
Embodiment
As shown in Figure 1, 2, pressurized cylinder of the present utility model 1 inside is provided with the pressurized cylinder piston bar 5 that can freely stretch along vertical direction, and the inside of main shaft casing 8 then is equipped with the main shaft 7 that can rotate freely.Be used for promptly and 6 inside that are arranged on this main shaft 7 of broaching tool bar of loosening cutter, and can move up and down along the central axis of this main shaft 7 and compress and loosen butterfly spring.Then stretch out in outside the main shaft casing 8 with the termination of pressurized cylinder piston bar 5 corresponding broaching tool bars 6, and the central axis of the central axis of this broaching tool bar 6 and pressurized cylinder piston bar 5 is located on the same line, can be over against the termination of this broaching tool bar 6 when the downward fast moving to guarantee broaching tool bar 6.
On pressurized cylinder 1, also be fixed with a pressurized cylinder bearing plate 2, promptly guarantee that by this screw this pressurized cylinder bearing plate 2 is solidified as a whole with pressurized cylinder 1 by screw.Simultaneously, also be provided with a through hole at the centre place of this pressurized cylinder bearing plate 2, the termination of described broaching tool bar 6 then pass this through hole and be positioned at pressurized cylinder piston bar 5 under.Because main shaft 7 inevitably can produce vibrations when pressurized cylinder piston bar 5 contacts with broaching tool bar 6, for fear of collision and the friction between main shaft 7 and the pressurized cylinder bearing plate 2, so the internal diameter of this through hole is larger than the diameter of main shaft 7.
Simultaneously, the utility model also is provided with one cannelure 10 on main shaft 7, and promptly caving inward on main shaft 7 surfaces near broaching tool bar 6 ends forms the groove of annular together.Because the through-hole diameter at pressurized cylinder bearing plate 2 centre places is larger than the diameter of this main shaft 7, so this cannelure 10 just is positioned at the inside of this through hole fully.In order further to unload the Song Daoli that pressurized cylinder piston bar 5 produces, therefore on the lower surface of pressurized cylinder bearing plate 2, also be fixed with a pair of semi-circular left-hand thread plate 11 that is held in these cannelure 10 inside by screw.
The structure of described semi-circular left-hand thread plate 11 as shown in Figure 3, promptly each semi-circular left-hand thread plate 11 all is to be made into the semi-ring shape by metal material, and just forms a complete annulus when 11 combinations of two blocks of semi-circular left-hand thread plates.Can be fastened on the lower surface of pressurized cylinder bearing plate 2 in order to ensure this semi-circular left-hand thread plate 11, therefore on each semi-circular left-hand thread plate 11, also be provided with plural screw 12.During connection, screw passes pressurized cylinder bearing plate 2 and is connected with this screw 12, thereby guarantees that semi-circular left-hand thread plate 11 tightens together by screw and pressurized cylinder bearing plate 2.
Can be complementary with cannelure 10 in order to ensure semi-circular left-hand thread plate 11, the inside radius of each semi-circular left-hand thread plate 11 is less than the inside radius of the cannelure 10 of this main shaft 7, so that pressurized cylinder bearing plate 2 can fasten the cannelure 10 of main shaft 7 when moving up with semi-circular left-hand thread plate 11.Simultaneously, the outer radius of each semi-circular left-hand thread plate 11 then is greater than the radius of through hole on the pressurized cylinder bearing plate 2, thereby guarantees that this semi-circular left-hand thread plate 11 can not pass this through hole.
In order to support pressurized cylinder bearing plate 2 and the pressurized cylinder 1 that is solidified as a whole in vertical direction, and guarantee to be fixed between the cannelure 10 of semi-circular left-hand thread plate 11 on the pressurized cylinder bearing plate 2 and main shaft 7 and leave a suitable preset clearance, therefore also be uniformly distributed with the sleeve 4 more than three between pressurized cylinder bearing plate 2 and main shaft casing 8, pressurized cylinder bearing plate 2 just is placed on these sleeve 4 formed going up in the plane.Can move up and down synchronously in order to ensure the pressurized cylinder bearing plate 2 that is solidified as a whole, pressurized cylinder 1 and semi-circular left-hand thread plate 11, therefore on pressurized cylinder bearing plate 2, also be provided with the guide spiro rod 3 identical, and these guide spiro rods 3 are fixed on the end face of main shaft casing 8 after passing the via hole of pressurized cylinder bearing plate 2 and sleeve 4 with sleeve 4 quantity.
Simultaneously, in order to ensure not having CONTACT WITH FRICTION between main shaft 7 when the not tool changing and the semi-circular left-hand thread plate 11, the utility model makes by the height dimension of adjusting sleeve 4 and leaves a less preset clearance between the upper and lower surface of semi-circular left-hand thread plate 11 and cannelure 10.By this preset clearance, the utility model is not when needing to carry out loose cutter action, and main shaft 7 this semi-circular left-hand thread plate 11 under the situation of rotation at a high speed can not have any contact with the upper and lower surface of cannelure 10; And when needs carried out the action of loose cutter, this main shaft 7 can be solidified as a whole with pressurized cylinder bearing plate 2 after by cannelure 10 and semi-circular left-hand thread plate 11.
In order effectively to reduce and buffering pressurized cylinder piston bar 5 moves down impulsive force when touching the broaching tool bar fast, therefore the utility model is provided with elastic component 9 between guide spiro rod 3 and pressurized cylinder bearing plate 2, and promptly the utility model all is being with an elastic component 9 between the upper surface of the nut of guide spiro rod 3 and pressurized cylinder bearing plate 2 on the screw rod of each guide spiro rod 3.
Because the impulsive force that pressurized cylinder piston bar 5 was produced when moving down fast is bigger, the high-intensity metal compression of elastic component 9 preferential employings therefore of the present utility model spring is realized, i.e. this metal compression spring is to be in its pre-compressed state when not carrying out loose cutter action always, so that the anti-force that makes progress can cushion loose cutter the time.In like manner, the cylinder that can reach the band through hole of being made by rubber or sponge elastomer of corresponding function also can substitute this metal compression spring.
In the time of needs pine cutter, pressurized cylinder piston bar 5 moves down contact broaching tool bar 6 fast, pressurized cylinder 1 that is solidified as a whole under the effect of reaction force and pressurized cylinder bearing plate 2 are being with semi-circular left-hand thread plate 11 to move up along guide spiro rod 3 together, and the compression spring on the compression guide spiro rod, touch the cannelure 10 of main shaft 7 until semi-circular left-hand thread plate 11, compression in this time spring has just cushioned the impulsive force of 5 pairs of broaching tool bars 6 of pressurized cylinder piston bar.Pressurized cylinder piston bar 5 continues to move down, because the upper surface of semi-circular left-hand thread plate 11 has been close to the upper surface of the cannelure 10 of main shaft 7, therefore can not produce relative moving between the two, pressurized cylinder piston bar 5 can only be depressed broaching tool bar 6 and compress the butterfly spring that is positioned at these broaching tool bar 6 inside and move down at this moment, until being totally released cutter, the loose cutter power of 4500kgf that is produced or 6000kgf has become showing active force between main shaft 7 and the pressurized cylinder piston bar 5 by the effect of semi-circular left-hand thread plate 11, and finally act on the butterfly spring, and can not act on the spring bearing of main shaft 7 by main shaft 7.
As mentioned above, just can well realize the utility model.
Claims (5)
1. unsteady discharging type main shaft device for loosing knife, mainly be provided with the main shaft casing (8) of main shaft (7) by inside, be arranged on the broaching tool bar (6) that this main shaft (7) is inner and can move up and down along its center line, the pressurized cylinder (1) that is solidified as a whole with pressurized cylinder bearing plate (2), and the sleeve (4) that is arranged between pressurized cylinder bearing plate (2) and the main shaft casing (8) is formed, be arranged at guide blot (3) on the pressurized cylinder bearing plate (2) and pass this sleeve (4) back and be fixedly linked, it is characterized in that: also be with the elastic component (9) that plays cushioning effect between the cap head that is positioned at guide blot (3) and the pressurized cylinder bearing plate (2) on the screw rod of guide blot (3) with main shaft casing (8).
2. a kind of unsteady discharging type main shaft device for loosing knife according to claim 1 is characterized in that: described elastic component (9) is metal compression spring.
3. a kind of unsteady discharging type main shaft device for loosing knife according to claim 1 is characterized in that: described elastic component (9) is the cylinder of the band through hole made by rubber or sponge elastomer.
4. a kind of unsteady discharging type main shaft device for loosing knife according to claim 1, it is characterized in that: on main shaft (7), also be provided with cannelure (10), on the lower surface of pressurized cylinder bearing plate (2), also be fixed with two blocks of semi-circular left-hand thread plates (11) that are held in this cannelure (10) notch simultaneously.
5. a kind of unsteady discharging type main shaft device for loosing knife according to claim 4 is characterized in that: also be provided with between this semi-circular left-hand thread plate (11) and the cannelure (10) and guarantee that this device for loosing knife can not have the preset clearance in relative rotation that rubs between its main shaft (7) and the semi-circular left-hand thread plate (11) when not tool changing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206243517U CN201863036U (en) | 2010-11-25 | 2010-11-25 | Floating unloading type device for loosening cutter on main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206243517U CN201863036U (en) | 2010-11-25 | 2010-11-25 | Floating unloading type device for loosening cutter on main shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201863036U true CN201863036U (en) | 2011-06-15 |
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ID=44134202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206243517U Expired - Lifetime CN201863036U (en) | 2010-11-25 | 2010-11-25 | Floating unloading type device for loosening cutter on main shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201863036U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102019559A (en) * | 2010-11-25 | 2011-04-20 | 成都普瑞斯数控机床有限公司 | Floating unloading type device for loosening blade on main shaft |
| CN102962709A (en) * | 2012-12-10 | 2013-03-13 | 呼和浩特众环(集团)有限责任公司 | Hydraulic manipulator tool drawing device |
| CN103286586A (en) * | 2013-06-19 | 2013-09-11 | 江苏鼎顺重型机床有限公司 | High-rigidness knife rod supporting block structure |
| CN104493603B (en) * | 2014-12-11 | 2016-09-14 | 宁波海天精工股份有限公司 | A kind of spindle floating is forged a knife structure |
-
2010
- 2010-11-25 CN CN2010206243517U patent/CN201863036U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102019559A (en) * | 2010-11-25 | 2011-04-20 | 成都普瑞斯数控机床有限公司 | Floating unloading type device for loosening blade on main shaft |
| CN102962709A (en) * | 2012-12-10 | 2013-03-13 | 呼和浩特众环(集团)有限责任公司 | Hydraulic manipulator tool drawing device |
| CN103286586A (en) * | 2013-06-19 | 2013-09-11 | 江苏鼎顺重型机床有限公司 | High-rigidness knife rod supporting block structure |
| CN103286586B (en) * | 2013-06-19 | 2016-05-11 | 江苏鼎顺重型机床有限公司 | High rigidity knife bar support block structure |
| CN104493603B (en) * | 2014-12-11 | 2016-09-14 | 宁波海天精工股份有限公司 | A kind of spindle floating is forged a knife structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Floating unloading type device for loosening blade on main shaft Effective date of registration: 20151109 Granted publication date: 20110615 Pledgee: Agricultural Bank of China Limited by Share Ltd Chengdu Qingyang branch Pledgor: Chengdu Precise CNC Machine Tool Co., Ltd. Registration number: 2015990000974 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20180320 Granted publication date: 20110615 Pledgee: Agricultural Bank of China Limited by Share Ltd Chengdu Qingyang branch Pledgor: Chengdu Precise CNC Machine Tool Co., Ltd. Registration number: 2015990000974 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200715 Address after: No.99, tianqin West Street, high tech Zone, Chengdu, Sichuan 610000 Patentee after: Chengdu Aiwei Machinery Co., Ltd Address before: 610000, 79, Tian Qin West Street, Chengdu hi tech Zone (West District, Sichuan) Patentee before: CHENGDU PRECISE CNC MACHINE TOOL Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110615 |
|
| CX01 | Expiry of patent term |