CN2125470U - Live center with replaceable center head - Google Patents
Live center with replaceable center head Download PDFInfo
- Publication number
- CN2125470U CN2125470U CN 92225631 CN92225631U CN2125470U CN 2125470 U CN2125470 U CN 2125470U CN 92225631 CN92225631 CN 92225631 CN 92225631 U CN92225631 U CN 92225631U CN 2125470 U CN2125470 U CN 2125470U
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- CN
- China
- Prior art keywords
- tapered sleeve
- center
- head
- cone
- centre head
- 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.)
- Granted
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- 238000009434 installation Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 11
- 230000008439 repair process Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000007514 turning Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
The utility model relates to a removable top dirt of top point head. The center body of the original integral structure is designed into a three-body structure connected through a taper sleeve, so that the concentricity problem in repairing the center body after the center head is worn out is solved, the service life of the center body can be prolonged, the fund is saved, the center body is convenient to disassemble and assemble, the center body is designed into the center heads with various structures, the processing requirements of different materials and workpieces can be met, and the center body is a new product with popularization value.
Description
The utility model belongs to the live center of lathe general-purpose accessory, particularly a kind of replaceable centre head.
In machining, the application of live center is very extensive, and it is an indispensable aid in the Vehicle Processing.At present, each live center manufacturer normally is directly installed on bearing on the live center head.During use, position easy to wear mainly is the tip of live center, so after using a period of time, the tip of live center is just bald by mill.This moment as continue to use, its tip is just pricked not advance in the workpiece end face, particularly some small workpiece centering not usually, mainly withstanding workpiece by axial force cuts, cause difficult cutting like this, influence turning process velocity and workpiece quality, caused very big loss to enterprise.If the bald live center of mill change cause again bigger waste (because of live center have more than is needed how long just bald by mill), in addition, repair grinding bald live center exactly, difficulty is also bigger like this, at first being to guarantee axial concentricity, secondly is that radial beat eccentricity is also bigger.Chinese patent CN85205555 number a kind of live centre (live center) is disclosed in the recent period.This live center adopts two unilateral thrust radial ball bearings (168000) usually, the inside and outside circle of bearing respectively with the endoporus and the Mohs cone interference fit of top cone, adjust the gap that screw is adjusted bearing by screwing, at last by top cone is carried out the secondary grinding, further eliminate because the error that processing and assembling are produced reaches higher precision.Owing to this technology just for the machining accuracy of each parts of reducing live center adopts the precision that the secondary operations of centre head is improved live center, complex process, and it repairs also comparatively difficulty to the bald back of centre head mill.
The utility model improves at the problem that prior art exists, and provides a kind of centre head to repair, and prolongs its service life, and guarantees to repair required precision, and centre head is also replaceable simultaneously, and changes live center easily.
The utility model is achieved by following manner: a kind of by top body, bearing, the live center that Morse's cone constitutes, it is characterized in that: tapered sleeve that said top body design employing centre head and the band edge that cooperates with its rear portion cone cover and three body structures that cooperate housing mounted body three parts to constitute by step with the end cap of tapered sleeve, centre head can unload the disengaging tapered sleeve easily, the shell body rear portion is a Morse's cone, being shaped on the aperture in it shuts greater than the manhole of minimum-value aperture, tapered sleeve internal taper hole end size and with screw, during use such as need unload centre head and its rear portion cone when cooperating tension with tapered sleeve, can open screw, inserting a push rod ejects centre head, be provided with thrust bearing and two single series radial bearings in the shell body and between tapered sleeve, and between two single series radial bearings, be provided with cooperate with tapered sleeve and shell body respectively install in, outer shading ring, the centre head of present technique also can manufacture other version in addition, as Fig. 2, shown in 3, but it is the centre head of difference converted timber and steel pipe.When present technique is used, be that benchmark is installed on the lathe with the Morse's cone, the centre head alignment pieces can be carried out the processing of various materials, two single series radial bearing load radial loads here, and thrust bearing is born axial force.
The utility model is compared with prior art has following characteristics: at first be that original top body is holistic, present technique changes trisome into, it can be according to the different requirements of workpiece, only change centre head and other part needn't move and just can finish processing tasks, solved former top single situation, helped producing; Next is that present technique can be repaired, former top greatest drawback can not be repaired exactly, caused waste, the reparation on former pinnacle, sometimes be in enterprising turning of scroll chuck or grinding the top clamping that removes, because scroll chuck itself so just is not just, new scroll chuck does not guarantee concentricity yet, live center just more can't guarantee concentricity like this, sometimes clamping centre head with heart makes it to be integral with the live center bodily form, be installed in and carry out turning or grinding on lathe spindle or the grinding machine spindle, because this way add have man-hour certain cutting force in addition bearing certain clearance is arranged, the result still is difficult to guarantee axial concentricity, present technique has solved this problem, can process a tapered sleeve earlier and be installed on the lathe spindle, centre head is installed in the good tapered sleeve of car again, so just reparation can be processed, and concentricity can be guaranteed; Be exactly that present technique prolongs service life greatly in addition, the trial production that processed sample carries out shows that the life-span can be original 2～3 times.
Fig. 1 is an overall construction drawing of the present utility model.
Fig. 2,3 is other two kinds of versions of centre head of the present utility model.
Among the figure: shading ring, 7 tapered sleeves, 8 centre heads, 9 screws in 1 Morse's cone, 2 shell bodies, 3 thrust bearings, 4 outer shading rings, the 5 single series radial bearings, 6.
Most preferred embodiment of the present utility model, as Figure 1-3.A kind of by top body, bearing, the live center that Morse's cone constitutes, it is characterized in that: tapered sleeve 7 that said top body design employing centre head 8 and the band edge that cooperates with its rear portion cone cover and three body structures that cooperate housing mounted body 2 three parts to constitute by step with the end cap of tapered sleeve 7, centre head 8 can unload easily and break away from tapered sleeve 7, shell body 2 rear portions are Morse's cone 1, being shaped on the aperture in it also shuts with screw 9 greater than the manhole of minimum-value aperture, tapered sleeve 7 internal taper hole end size, during use such as need unload centre head 8 and its rear portion cone when cooperating tension with tapered sleeve 7, can open screw 9, inserting a push rod ejects centre head 8, in the shell body 2 and 7 of tapered sleeves be provided with thrust bearing 3 and two single series radial bearings 5, and 5 of two single series radial bearings be provided with cooperates with tapered sleeve 7 and shell body 2 respectively installation in, outer shading ring 6,4.The centre head 8 of present technique also can manufacture other version in addition, and shown in Fig. 2,3, but it is the centre head 8 of difference converted timber and steel pipe.When present technique is used, be that benchmark is installed on the lathe with the Morse's cone, the centre head alignment pieces can be carried out the processing of various materials, two single series radial bearing load radial loads here, and thrust bearing is born axial force.
Claims (1)
1, a kind of live center that is made of top body, bearing, Morse's cone is characterized in that:
Tapered sleeve that said top body design employing centre head and the band edge that cooperates with its rear portion cone cover and three body structures that cooperate housing mounted body three parts to constitute by step with the end cap of tapered sleeve, centre head can unload the disengaging tapered sleeve easily, the shell body rear portion is a Morse's cone, being shaped on the aperture in it shuts greater than the manhole of the minimum-value aperture size of tapered sleeve internal taper hole and with screw, be provided with thrust bearing and two single series radial bearings in the shell body and between tapered sleeve, and between two single series radial bearings, be provided with cooperates with tapered sleeve and shell body respectively installation in, outer shading ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92225631 CN2125470U (en) | 1992-06-20 | 1992-06-20 | Live center with replaceable center head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92225631 CN2125470U (en) | 1992-06-20 | 1992-06-20 | Live center with replaceable center head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2125470U true CN2125470U (en) | 1992-12-23 |
Family
ID=4967805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92225631 Granted CN2125470U (en) | 1992-06-20 | 1992-06-20 | Live center with replaceable center head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2125470U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1939626B (en) * | 2005-09-29 | 2010-05-12 | 津田驹工业株式会社 | Finial seat |
| CN101298126B (en) * | 2008-06-30 | 2010-06-09 | 河南活顶尖机械有限公司 | Changeable built-in live center |
| CN102554286A (en) * | 2011-09-28 | 2012-07-11 | 河南活顶尖机械有限公司 | High-speed live center |
| CN104117696A (en) * | 2014-07-16 | 2014-10-29 | 宁波夏拓机械装备有限公司 | Cutter bar tailstock for clamping taper sleeves |
| CN104227035A (en) * | 2014-07-29 | 2014-12-24 | 宁波海天精工股份有限公司 | Removing mechanism for tailstock center of machine tool |
| WO2015168897A1 (en) * | 2014-05-08 | 2015-11-12 | 庄增信 | Center apparatus capable of rapidly replacing head portions in multiple forms |
-
1992
- 1992-06-20 CN CN 92225631 patent/CN2125470U/en active Granted
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1939626B (en) * | 2005-09-29 | 2010-05-12 | 津田驹工业株式会社 | Finial seat |
| CN101298126B (en) * | 2008-06-30 | 2010-06-09 | 河南活顶尖机械有限公司 | Changeable built-in live center |
| CN102554286A (en) * | 2011-09-28 | 2012-07-11 | 河南活顶尖机械有限公司 | High-speed live center |
| WO2015168897A1 (en) * | 2014-05-08 | 2015-11-12 | 庄增信 | Center apparatus capable of rapidly replacing head portions in multiple forms |
| CN104117696A (en) * | 2014-07-16 | 2014-10-29 | 宁波夏拓机械装备有限公司 | Cutter bar tailstock for clamping taper sleeves |
| CN104117696B (en) * | 2014-07-16 | 2016-05-18 | 宁波夏拓机械装备有限公司 | A kind of knife bar tailstock with tapered sleeve clamping |
| CN104227035A (en) * | 2014-07-29 | 2014-12-24 | 宁波海天精工股份有限公司 | Removing mechanism for tailstock center of machine tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |