CN202491113U - Floating tool releasing and catching device for tool replacement of spindle - Google Patents
Floating tool releasing and catching device for tool replacement of spindle Download PDFInfo
- Publication number
- CN202491113U CN202491113U CN2012201047904U CN201220104790U CN202491113U CN 202491113 U CN202491113 U CN 202491113U CN 2012201047904 U CN2012201047904 U CN 2012201047904U CN 201220104790 U CN201220104790 U CN 201220104790U CN 202491113 U CN202491113 U CN 202491113U
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- Prior art keywords
- screw rod
- main shaft
- spindle
- connecting plate
- milling head
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- 238000003801 milling Methods 0.000 claims abstract description 20
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000003754 machining Methods 0.000 abstract 1
- 230000036461 convulsion Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005242 forging Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- Automatic Tool Replacement In Machine Tools (AREA)
Abstract
The utility model relates to a floating tool releasing and catching device for tool replacement of a spindle. The spindle is arranged on a milling head body through the bearing of a spindle bearing, a second screw rod is coaxially assembled in the spindle and can move axially, a pad and a disc spring are sleeved on a second screw rod, one end of the disc spring is in contact with the second screw rod, the other end of the disc spring is in contact with the spindle through the pad, and the rear end of the second screw rod is opposite to a piston rod end of an air cylinder body. The floating tool releasing and catching device is characterized in that the rear side face of the milling head body is provided with a positioning pin screw rod, which is provided with a connecting plate capable of moving back and forth along an axial direction of the positioning pin screw rod, wherein the air cylinder body is connected onto the connecting plate through the first screw rod; the rear end of the spindle is provided with a round nut; and the moving stroke of the connecting plate is limited between the rear side face of the milling head body and the round nut. The floating tool releasing and catching device disclosed by the utility model is skillful and reasonable in structure, and can prevent tool releasing and catching force from damaging the spindle and the spindle bearing to greatly increase the precision and prolong the service life of the spindle bearing, guarantee machining precision and reduce maintenance cost.
Description
Technical field
The utility model relates to a kind of numerical controlled machinery process equipment, specifically a kind of unsteady tool striking device that is used for the main shaft tool changing on the Digit Control Machine Tool.
Background technology
Along with developing rapidly of manufacturing technology, the development of machine industry just becomes the most important thing, and Digit Control Machine Tool is the core force in the machine industry, and the axis system in the Digit Control Machine Tool becomes one of three great strategy emphasis in the Digit Control Machine Tool.In order to realize high accuracy, high efficiency production and processing, the main shaft automatic tool changer just arises at the historic moment.In the axis system of general Digit Control Machine Tool, tool striking device is the key point that main shaft of numerical control machine tool is realized automatic tool changer.And frequent tool changing, frequent forging a knife makes the bearing of main shaft can receive from axial vertical, and in the course of time, the precision of main shaft bearing just is affected, and the life-span of main shaft bearing also is affected.Unsteady tool striking device in the main shaft tool changing of producing with our company is an example, and its structure is as shown in Figure 1, and its concrete course of work is: forge a knife: by cylinder block 6 air inlets; Cylinder block 6 is connected on the body of milling head 9 through first screw rod 4, and after cylinder block 6 air inlets, piston rod 5 travels forward and promotes second screw rod 7; Press down dish spring 3 by second screw rod 7, dish spring 3 contacts with main shaft 8 through pad 2, when cylinder block 6 suction strokes reach certain value; The stroke that second screw rod 7 presses down reaches loose cutter spacing, and cutter comes loose.When main shaft 8 folder cuttves, cylinder block 6 returns to original state, and dish spring 3 is resetted by the pressure of piston rod 5 no longer and drives second screw rod, 6 rising returns, tension cutter.In loose cutter process, when dish spring 3 pressurizeds, through fill up 2 main shaft 8 axially on give main shaft 8 pressure; The power of forging a knife makes main shaft 8 in axial direction move through dish spring 3 and main shaft 8 the most at last; And drive main shaft bearing 1 simultaneously and in axial direction move, the outer ring of main shaft bearing 1 and exterior part axially promote exterior part again and axially move, and finally exerting all one's strength passes to body of milling head 9; Formed one with the impulsive force between main shaft 8, main shaft bearing 1 and the body of milling head 9; And make final stressedly bear, and the front end of main shaft 8 there is a jerk value at axial direction, through detecting by main shaft bearing 1; Main shaft 8 front end jerk values are 0.05 ~ 0.075mm, and this jerk value has also reflected the size of the axial force that main shaft bearing 1 is suffered.Because frequently tool changing in the Digit Control Machine Tool process, the time one is of a specified duration, and jerk value will have a strong impact on the precision and the life-span of main shaft bearing 1.
Summary of the invention
The purpose of the utility model is to overcome the deficiency that exists in the prior art; Unsteady tool striking device in a kind of main shaft tool changing is provided; Its structure is ingenious rationally, and the power of forging a knife in the time of can avoiding main shaft to forge a knife makes the precision of main shaft bearing and life-span be able to prolong greatly to the infringement of main shaft and main shaft bearing; Guarantee the precision of processing, reduced the cost of maintenance.
The technical scheme that provides according to the utility model: the unsteady tool striking device in the main shaft tool changing; Comprise main shaft bearing, pad, dish spring, first screw rod, cylinder block, second screw rod, main shaft and body of milling head; Main shaft is installed on the body of milling head through the main shaft bearing supporting; Second screw coaxial is assemblied in the main shaft and can moves axially, and pad and dish spring are sleeved on second screw rod, and said dish spring one end contacts with second screw rod; The said dish spring other end contacts with main shaft through pad, and the tailpiece of the piston rod of said second spiro rod rear end and cylinder block is relative; It is characterized in that: on the said body of milling head trailing flank alignment pin screw rod is installed, on the alignment pin screw rod, being equipped with can be along the connecting plate that axially moves forward and backward of alignment pin screw rod, and said cylinder block is connected on the connecting plate through first screw rod; Said rear-end of spindle is equipped with round nut, and the shift motion of said connecting plate is restricted between body of milling head trailing flank and the round nut.
As the further improvement of the utility model, the shift motion of said connecting plate between body of milling head trailing flank and round nut is 2mm.
The utility model compared with prior art; Advantage is: 1. the utility model power that can reduce even avoid main shaft and main shaft bearing to receive at axial direction greatly; The precision and the life-span of main shaft bearing have been guaranteed; Reduce maintenance frequency, saved maintenance cost, and guaranteed the efficient of processing indirectly.2. the utility model is the improvement of on the basis of original tool striking device, doing, and manufacturing cost does not have to increase basically.
Description of drawings
Fig. 1 is the structural representation of existing certain tool striking device.
Fig. 2 is the structural representation of the utility model embodiment.
The specific embodiment
Below in conjunction with concrete accompanying drawing and embodiment the utility model is described further.
As shown in the figure: the unsteady tool striking device among the embodiment mainly is made up of parts such as comprising main shaft bearing 1, pad 2, dish spring 3, first screw rod 4, piston rod 5, cylinder block 6, second screw rod 7, main shaft 8, body of milling head 9, alignment pin screw rod 10, connecting plate 11 and round nut 12.
As shown in Figure 2; Main shaft 8 is installed on the body of milling head 9 through main shaft bearing 1 supporting; Second screw rod, 7 coaxial being assemblied in the main shaft 8 also can move axially, and pad 2 is sleeved on second screw rod 7 with dish spring 3, and said dish spring 3 one ends contact with second screw rod 7; Said dish spring 3 other ends contact with main shaft 8 through pad 2, and piston rod 5 ends of said second screw rod, 7 rear ends and cylinder block 6 are relative; On said body of milling head 9 trailing flanks alignment pin screw rod 10 is installed, on alignment pin screw rod 10, being equipped with can be along the connecting plate that axially moves forward and backward 11 of alignment pin screw rod 10, and said cylinder block 6 is connected on the connecting plate 11 through first screw rod 4; Said main shaft 8 rear ends are equipped with round nut 12, and the shift motion of said connecting plate 11 is restricted between body of milling head 9 trailing flanks and the round nut 12.
Comparison diagram 1, Fig. 2 can find out that the unsteady tool striking device of the utility model only is on the basis of original tool striking device, to have increased alignment pin screw rod 10 and connecting plate 11, and manufacturing cost does not have to increase basically.
The concrete course of work of the utility model is following:
Forge a knife: cylinder block 6 air inlets; Piston rod 5 travels forward and promotes second screw rod 7, at the initial stage that promotes second screw rod 7, because receive the reaction force of second screw rod 7; Cylinder block 6 drives first screw rod 4 and connecting plate 11 axially moving backward along alignment pin screw rod 10; When they moved certain distance (about 2mm), said connecting plate 11 contacted with round nut 12 on being installed in main shaft 8, connecting plate 11 with stop to move backward after round nut 12 contacts.When the pressure continuation increase of cylinder block 6, the piston rod 5 of cylinder block 6 stretches out and promotes second screw rod 7, presses down dish spring 3 by second screw rod 7; Dish spring 3 contacts with main shaft 8 through pad 2; When piston rod 5 strokes reached certain value, the stroke that second screw rod 7 presses down also reached loose cutter spacing, and cutter comes loose.
The folder cutter: when main shaft 8 folder cuttves, cylinder block 6 resets, and the piston rod 5 of cylinder block 6 is return in the cylinder block 6, and first screw rod 4 and connecting plate 11 fall because of self gravitation, and connecting plate 11 separates with round nut 12.Dish spring 3 is not stressed and resets, and drives second screw rod, 7 rising returns, thus the tension cutter.
The utility model is in loose cutter process; When the piston rod 5 of cylinder block 6 presses down; Because being caught on connecting plate 11 by round nut 12, the rear end of main shaft 8 is in the same place; So dish spring 3 through fill up 2 press down main shaft 8 in, main shaft 8 at the stressing conditions of axial location by the single internal force that receives axial force to transfer main shaft 8 self to, so the axial force that main shaft bearing 1 is born is very little.Through measuring, adopt main shaft 8 front end jerk value when loose cutter of the unsteady tool striking device of the utility model to be merely 0.005mm ~ 0.01mm, effectively reduced the distortion of main shaft bearing 1, prolonged the service life of main shaft bearing 1.
The utility model through letting cylinder carry out the replacing of cutter at a kind of unsteady state, is forged a knife through floating when main shaft 8 tool changing of Digit Control Machine Tool, realize automatic tool changer, and has solved the stressed problem of main shaft bearing 1 in the automatic tool changer.
Claims (2)
1. the unsteady tool striking device in the main shaft tool changing; Comprise main shaft bearing (1), pad (2), dish spring (3), first screw rod (4), cylinder block (6), second screw rod (7), main shaft (8) and body of milling head (9); Main shaft (8) is installed on the body of milling head (9) through main shaft bearing (1) supporting; Coaxial being assemblied in the main shaft (8) of second screw rod (7) also can move axially; Pad (2) and dish spring (3) are sleeved on second screw rod (7); Said dish spring (3) one ends contact with second screw rod (7), and said dish spring (3) other end contacts with main shaft (8) through pad (2), and piston rod (5) end of said second screw rod (7) rear end and cylinder block (6) relatively; It is characterized in that: on said body of milling head (9) trailing flank alignment pin screw rod (10) is installed; On alignment pin screw rod (10), being equipped with can be along the connecting plate that axially moves forward and backward (11) of alignment pin screw rod (10), and said cylinder block (6) is connected on the connecting plate (11) through first screw rod (4); Said main shaft (8) rear end is equipped with round nut (12), and the shift motion of said connecting plate (11) is restricted between body of milling head (9) trailing flank and the round nut (12).
2. the unsteady tool striking device in the main shaft tool changing according to claim 1, it is characterized in that: the shift motion of said connecting plate (11) between body of milling head (9) trailing flank and round nut (12) is 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201047904U CN202491113U (en) | 2012-03-20 | 2012-03-20 | Floating tool releasing and catching device for tool replacement of spindle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201047904U CN202491113U (en) | 2012-03-20 | 2012-03-20 | Floating tool releasing and catching device for tool replacement of spindle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202491113U true CN202491113U (en) | 2012-10-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201047904U Expired - Fee Related CN202491113U (en) | 2012-03-20 | 2012-03-20 | Floating tool releasing and catching device for tool replacement of spindle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202491113U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104070395A (en) * | 2014-06-24 | 2014-10-01 | 杭州贝克机械有限公司 | Quick tool changing structure of straight hydrostatic servo power spindle head |
| CN105798679A (en) * | 2016-04-18 | 2016-07-27 | 扬州欧普兄弟机械工具有限公司 | Pneumatic tool changer of small milling and drilling machine |
| CN105904269A (en) * | 2016-06-18 | 2016-08-31 | 郑莹 | Spreading knife mechanism capable of feeding in curved surface mode |
| CN106808275A (en) * | 2017-03-24 | 2017-06-09 | 常州轻工职业技术学院 | Left-hand thread mechanism and tool striking device |
| CN106956158A (en) * | 2017-03-24 | 2017-07-18 | 常州轻工职业技术学院 | Left-hand thread mechanism and tool striking device |
-
2012
- 2012-03-20 CN CN2012201047904U patent/CN202491113U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104070395A (en) * | 2014-06-24 | 2014-10-01 | 杭州贝克机械有限公司 | Quick tool changing structure of straight hydrostatic servo power spindle head |
| CN104070395B (en) * | 2014-06-24 | 2017-05-10 | 杭州贝克机械有限公司 | Quick tool changing structure of straight hydrostatic servo power spindle head |
| CN105798679A (en) * | 2016-04-18 | 2016-07-27 | 扬州欧普兄弟机械工具有限公司 | Pneumatic tool changer of small milling and drilling machine |
| CN105904269A (en) * | 2016-06-18 | 2016-08-31 | 郑莹 | Spreading knife mechanism capable of feeding in curved surface mode |
| CN105904269B (en) * | 2016-06-18 | 2017-11-07 | 兰溪瑞鼎机床股份有限公司 | The exhibition cutter mechanism of curved surface feeding |
| CN106808275A (en) * | 2017-03-24 | 2017-06-09 | 常州轻工职业技术学院 | Left-hand thread mechanism and tool striking device |
| CN106956158A (en) * | 2017-03-24 | 2017-07-18 | 常州轻工职业技术学院 | Left-hand thread mechanism and tool striking device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: GUIZHOU OTEK CNC MACHINE CO., LTD. Assignor: Wuxi Otec CNC Machinery Co., Ltd. Contract record no.: 2014520000020 Denomination of utility model: Floating tool releasing and catching device for tool replacement of spindle Granted publication date: 20121017 License type: Exclusive License Record date: 20141203 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121017 Termination date: 20170320 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |