CN2762943Y - Device for loosening blade on machine-tool main shaft - Google Patents
Device for loosening blade on machine-tool main shaft Download PDFInfo
- Publication number
- CN2762943Y CN2762943Y CN 200520080423 CN200520080423U CN2762943Y CN 2762943 Y CN2762943 Y CN 2762943Y CN 200520080423 CN200520080423 CN 200520080423 CN 200520080423 U CN200520080423 U CN 200520080423U CN 2762943 Y CN2762943 Y CN 2762943Y
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- China
- Prior art keywords
- main shaft
- hand thread
- briquetting
- unsteady
- thread briquetting
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Abstract
The utility model discloses a device for loosening blades on a machine-tool main shaft, which comprises a blade beating cylinder, a main shaft body, a main shaft bearing, an inverse buckling disk and a floating inverse buckling and pressing block. By an annular connection block, the floating inverse buckling and pressing block with a cylindrical structure and the blade beating cylinder are fixed together, and the floating inverse buckling and pressing block is provided with a stepped hole at the middle. The inverse buckling disk with a T-shaped annular body structure is sheathed in the stepped hole of the floating inverse buckling and pressing block. The top end of the main shaft body is sheathed in a through hole of the inverse buckling disk, and is fixedly connected with the inverse buckling disk. The device enables the thrust of a piston rod of the blade beating cylinder not to transfer to the main shaft bearing when the machine-tool main shaft loosens the blades, while the thrust is converted into acting force between the inverse buckling disk and the floating inverse buckling and pressing block. Thus, the accuracy of the main shaft bearing can not be damaged.
Description
Technical field
The utility model relates to a kind of machine tool chief axis device for loosing knife.
Background technology
Existing machine tool main shaft device for loosing knife mainly comprises knife striking cylinder, main shaft, the main shaft pull bar, the butterfly spring, the main shaft casing, cabinet, main shaft bearing, the top of main shaft is connected with chassis active by bearing, the bottom flexibly connects by main shaft bearing and main shaft casing, the main shaft pull bar is arranged in the cavity of main shaft, with the piston rod of knife striking cylinder on same axis, its upper end is socketed in the cylindrical shape wiper block, and fixedly connected with wiper block, the external diameter of wiper block matches with the internal diameter of main shaft, can in main shaft, slide up and down, annular lower position block is passed in the lower end of main shaft pull bar, the end of main shaft pull bar is connected with the taper handle of a knife by blind rivet, the butterfly spring is between wiper block and annular lower position block, and its external diameter matches with the main shaft internal diameter.Lathe is when changing cutter, and the masterpiece of knife striking cylinder piston is used for main shaft pull bar and butterfly spring, and the reaction force that produces is delivered on the main shaft bearing by main shaft, thereby cause the main shaft bearing precision impaired, to shorten greatly service life, and main shaft bearing costs an arm and a leg, and use very uneconomical.
The utility model content
The power of knife striking cylinder piston can not act directly on the machine tool chief axis device for loosing knife on the machine tool mainshaft bearing when the utility model aimed to provide a kind of loose cutter.
The technical scheme that the utility model adopted is: a kind of machine tool chief axis device for loosing knife, comprise knife striking cylinder, main shaft, the main shaft pull bar, the butterfly spring, the main shaft casing, cabinet, main shaft bearing, the top of main shaft is connected with chassis active by bearing, the bottom flexibly connects by main shaft bearing and main shaft casing, the main shaft pull bar is arranged in the cavity of main shaft, with the piston rod of knife striking cylinder on same axis, its upper end is socketed in the cylindrical shape wiper block, and fixedly connected with wiper block, the external diameter of wiper block matches with the internal diameter of main shaft, can in main shaft, slide up and down, annular lower position block is passed in the lower end of main shaft pull bar, the end of main shaft pull bar is connected with the taper handle of a knife by blind rivet, the butterfly spring is between wiper block and annular lower position block, its external diameter matches with the main shaft internal diameter, it is characterized in that: also comprise annular contiguous block, left-hand thread dish and unsteady left-hand thread briquetting; The annular contiguous block is columnar structured, be positioned at the below of the flange of knife striking cylinder, the left-hand thread briquetting that floats is the middle cylindrical structural that shoulder hole is arranged, this shoulder hole is up big and down small, the left-hand thread briquetting that floats is positioned at the below of annular contiguous block, is fixed together by will float left-hand thread briquetting, flange and annular contiguous block of connecting bolt; The left-hand thread dish is a T shape ring bodies structure, be enclosed within the shoulder hole of the left-hand thread briquetting that floats, the diameter of the part that its external diameter is little is slightly littler than the diameter of aperture in the unsteady left-hand thread briquetting, the diameter of the part that its external diameter is big is slightly littler than the diameter of macropore in the unsteady left-hand thread briquetting, between left-hand thread dish and the unsteady left-hand thread briquetting certain clearance is arranged; The top of main shaft is enclosed within the through hole of left-hand thread dish, fixedlys connected with the left-hand thread dish.
Have through hole on the circumference at the outer rim place of described unsteady left-hand thread briquetting, this through hole is passed in the lower end of compression spring guide, be locked in the screwed hole of the cabinet that is positioned at the left-hand thread briquetting below of floating, form a fixed connection, the compression spring is located on the compression spring guide, its top is fixed with the top of compression spring guide, and its end contacts with the last end face of unsteady left-hand thread briquetting.
The beneficial effects of the utility model are: one, after adopting said structure, left-hand thread briquetting and knife striking cylinder are one owing to float, when the masterpiece of the piston rod of knife striking cylinder is used on the main shaft pull bar, the reaction force that the butterfly spring produces in the main shaft is very big, make the left-hand thread briquetting that floats together with knife striking cylinder by jack-up upwards, make the gap between left-hand thread dish and the unsteady left-hand thread briquetting be eliminated, unsteady left-hand thread briquetting and left-hand thread dish are bonded into one, the left-hand thread briquetting that promptly floats upwards floats and holds the left-hand thread dish, thereby the power of the piston rod of knife striking cylinder can not affacted on the main shaft bearing 9 by main shaft, guaranteed that the precision of main shaft bearing is difficult for impaired.Two, after the compression spring can make loose cutter action finish, the left-hand thread briquetting reliable reset of floating; Because the guiding of compression spring guide 11, it is crooked to prevent to compress spring 10, and can prevent that knife striking cylinder 1 left and right sides is crooked.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is a cutaway view of the present utility model.
Fig. 2 is the enlarged drawing of local I among Fig. 1.
Fig. 3 is the enlarged drawing of local I I among Fig. 1.
The specific embodiment
Embodiment, as Fig. 1, Fig. 2, shown in Figure 3, a kind of machine tool chief axis device for loosing knife of the utility model comprises knife striking cylinder 1, left-hand thread dish 3, unsteady left-hand thread briquetting 4, main shaft 5, main shaft pull bar 6, butterfly spring 7, main shaft casing 8, bearing 9, compression spring 10, compression spring guide 11, blind rivet 13, handle of a knife 14, lower position block 16, cabinet 17, wiper block 18, annular contiguous block 19, flange 20.The end of the cylinder body of knife striking cylinder 1 is fixed on the flange 20, annular contiguous block 19 is columnar structured, be positioned at the below of flange 20, the left-hand thread briquetting 4 that floats is the middle cylindrical structural that shoulder hole is arranged, this shoulder hole is up big and down small, and the left-hand thread briquetting 4 that floats is positioned at the below of annular contiguous block 19, is fixed together by will float left-hand thread briquetting 4, flange 20, annular contiguous block 19 of connecting bolt 15, become as a whole, connecting bolt 15 is locked in the screwed hole of the left-hand thread briquetting 4 that floats; Have 4 uniform through holes on the circumference at the outer rim place of unsteady left-hand thread briquetting 4,4 compression spring guide 11 lower ends are passed the through hole at the left-hand thread briquetting 4 outer rim places of floating respectively, be locked in the screwed hole of the cabinet 17 that is positioned at left-hand thread briquetting 4 belows of floating, form a fixed connection, compression spring 10 is located on the compression spring guide 11, because the guiding of compression spring guide 11, it is crooked to prevent to compress spring 10, and can prevent that knife striking cylinder 1 left and right sides is crooked, the top of compression spring 10 is fixed with the top of compression spring guide 11, and its end contacts with the last end face of unsteady left-hand thread briquetting 4; Left-hand thread dish 3 is a T shape ring bodies structure, be enclosed within the shoulder hole of the left-hand thread briquetting 4 that floats, the diameter of the part that its external diameter is little is slightly littler than the diameter of aperture in the unsteady left-hand thread briquetting 4, the diameter of the part that its external diameter is big is slightly littler than the diameter of macropore in the unsteady left-hand thread briquetting 4, and the gap of 0.3-0.5mm is arranged between the lower surface of the part that left-hand thread dish 3 top external diameters are big and the unsteady left-hand thread briquetting 4; Main shaft 5 is a hollow cylindrical structures, its upper end is enclosed within the through hole of left-hand thread dish 3, fixedly connected with left-hand thread dish 3, the top of main shaft 5 flexibly connects by bearing and the cabinet 17 that is positioned at left-hand thread briquetting 4 belows of floating, the bottom flexibly connects by main shaft bearing 9 and main shaft casing 8, guarantee that main shaft 5 can rotate freely, the position near main shaft casing 8 in main shaft 5 inner chambers is fixed with an annular lower position block 16; Main shaft pull bar 6 is arranged in the cavity of main shaft 5, with the piston rod 2 of knife striking cylinder 1 on same axis, between its top and the piston rod 2 the 5mm gap is arranged, its upper end is socketed in the cylindrical shape wiper block 18, and fixedly connected with wiper block 18, the external diameter of wiper block 18 matches with the internal diameter of main shaft 5, can in main shaft 5, slide up and down, annular lower position block 16 is passed in the lower end of main shaft pull bar 6, the end of main shaft pull bar 6 is connected with taper handle of a knife 14 by blind rivet 13, the microcephaly of blind rivet 13 is fixedlyed connected with taper handle of a knife 14, and its major part and main shaft pull bar 6 flexibly connect; Between wiper block 18 and the annular lower position block 16 the butterfly spring 7 that matches with main shaft 5 internal diameters is housed.
Its operation principle is: after machining center tool changing actuating signal is sent, the air operated reversing valve action, make the piston rod 2 in the knife striking cylinder 1 advance downwards, at first eliminated the 5mm gap of piston rod 2 with main shaft pull bar 6 tops, along with pressure strengthens, piston rod 2 continues to advance downwards, because the reaction force that butterfly spring 7 produces in the main shaft 5 is very big, and the left-hand thread briquetting 4 that floats is fixedlyed connected with knife striking cylinder 1, therefore float left-hand thread briquetting 4 together with knife striking cylinder 1 by jack-up upwards, make that the gap of 0.3～0.5mm is eliminated between left-hand thread dish 3 and the unsteady left-hand thread briquetting 4, the left-hand thread briquetting 4 that floats is bonded into one with left-hand thread dish 3, and compress spring 10 and further compressed this moment; Piston rod 2 continues will overcome dish spring 7 downwards and tries hard to recommend moving main shaft pull bar 6, and main shaft pull bar 6 will block steel ball 12 tops on the blind rivet 13 of handle of a knife 14 again to the next door, realize loose cutter action.The piston rod 2 of knife striking cylinder 1 acts on the reaction force that thrust produced on the main shaft pull bar 6 in this process, all is rendered as the pressure that floats between left-hand thread briquetting 4 and the left-hand thread dish 3, and can affact on the main shaft bearing 9.After the action of pine cutter is finished, when piston rod 2 leaves main shaft pull bar 6, compression spring 10 bounce-backs of further being compressed in the pine cutter process, the left-hand thread briquetting 4 that will float pushes up downwards, making floats produces the gap of 0.3～0.5mm again between left-hand thread briquetting 4 and the left-hand thread dish 3, thereby left-hand thread dish 3 can be rotated freely again together with main shaft 5.
Claims (2)
1, a kind of machine tool chief axis device for loosing knife, comprise knife striking cylinder, main shaft, the main shaft pull bar, the butterfly spring, the main shaft casing, cabinet, main shaft bearing, the top of main shaft is connected with chassis active by bearing, the bottom flexibly connects by main shaft bearing and main shaft casing, the main shaft pull bar is arranged in the cavity of main shaft, with the piston rod of knife striking cylinder on same axis, its upper end is socketed in the cylindrical shape wiper block, and fixedly connected with wiper block, the external diameter of wiper block matches with the internal diameter of main shaft, can in main shaft, slide up and down, annular lower position block is passed in the lower end of main shaft pull bar, and the end of main shaft pull bar is connected with the taper handle of a knife by blind rivet, and the butterfly spring is between wiper block and annular lower position block, its external diameter matches with the main shaft internal diameter, it is characterized in that: also comprise annular contiguous block, left-hand thread dish and unsteady left-hand thread briquetting; The annular contiguous block is columnar structured, be positioned at the below of the flange of knife striking cylinder, the left-hand thread briquetting that floats is the middle cylindrical structural that shoulder hole is arranged, this shoulder hole is up big and down small, the left-hand thread briquetting that floats is positioned at the below of annular contiguous block, is fixed together by will float left-hand thread briquetting, flange and annular contiguous block of connecting bolt; The left-hand thread dish is a T shape ring bodies structure, be enclosed within the shoulder hole of the left-hand thread briquetting that floats, the diameter of the part that its external diameter is little is slightly littler than the diameter of aperture in the unsteady left-hand thread briquetting, the diameter of the part that its external diameter is big is slightly littler than the diameter of macropore in the unsteady left-hand thread briquetting, between left-hand thread dish and the unsteady left-hand thread briquetting certain clearance is arranged; The top of main shaft is enclosed within the through hole of left-hand thread dish, fixedlys connected with the left-hand thread dish.
2, machine tool chief axis device for loosing knife according to claim 1, it is characterized in that: have through hole on the circumference at the outer rim place of described unsteady left-hand thread briquetting, this through hole is passed in the lower end of compression spring guide, be locked in the screwed hole of the cabinet that is positioned at the left-hand thread briquetting below of floating, form a fixed connection, the compression spring is located on the compression spring guide, and its top is fixed with the top of compression spring guide, and its end contacts with the last end face of unsteady left-hand thread briquetting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520080423 CN2762943Y (en) | 2005-02-05 | 2005-02-05 | Device for loosening blade on machine-tool main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520080423 CN2762943Y (en) | 2005-02-05 | 2005-02-05 | Device for loosening blade on machine-tool main shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2762943Y true CN2762943Y (en) | 2006-03-08 |
Family
ID=36140494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520080423 Expired - Fee Related CN2762943Y (en) | 2005-02-05 | 2005-02-05 | Device for loosening blade on machine-tool main shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2762943Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001009A (en) * | 2010-10-22 | 2011-04-06 | 大连华根机械有限公司 | Automatic knife-forging unloading device for processing central main spindle |
| 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 |
| CN102284877A (en) * | 2011-07-12 | 2011-12-21 | 浙江江南数控机床有限公司 | Knife hitting reversely buckling device for machine tool main shaft |
| CN102554672A (en) * | 2012-02-10 | 2012-07-11 | 上海三一精机有限公司 | Main shaft floating knife-loosing mechanism for vertical machining center |
| CN104245227A (en) * | 2013-04-04 | 2014-12-24 | 山崎马扎克公司 | Automatic tool exchanging device for angle tool holder for 5-face machining in vertical machining center |
| CN104625103A (en) * | 2014-12-26 | 2015-05-20 | 广州市昊志机电股份有限公司 | Improved mechanical direct-connection spindle |
| CN113305619A (en) * | 2021-06-15 | 2021-08-27 | 安徽津野数控科技有限公司 | Numerical control machining center main shaft knife loosening unloading mechanism |
| CN113523868A (en) * | 2020-04-16 | 2021-10-22 | 圣杰国际股份有限公司 | Tool sleeve structure for tool magazine of machine tool |
-
2005
- 2005-02-05 CN CN 200520080423 patent/CN2762943Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001009A (en) * | 2010-10-22 | 2011-04-06 | 大连华根机械有限公司 | Automatic knife-forging unloading device for processing central main spindle |
| 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 |
| CN102284877A (en) * | 2011-07-12 | 2011-12-21 | 浙江江南数控机床有限公司 | Knife hitting reversely buckling device for machine tool main shaft |
| CN102554672A (en) * | 2012-02-10 | 2012-07-11 | 上海三一精机有限公司 | Main shaft floating knife-loosing mechanism for vertical machining center |
| CN104245227A (en) * | 2013-04-04 | 2014-12-24 | 山崎马扎克公司 | Automatic tool exchanging device for angle tool holder for 5-face machining in vertical machining center |
| CN104245227B (en) * | 2013-04-04 | 2016-07-06 | 山崎马扎克公司 | The automatic tool exchange apparatus of five processing angle heads of vertical machining centre |
| CN104625103A (en) * | 2014-12-26 | 2015-05-20 | 广州市昊志机电股份有限公司 | Improved mechanical direct-connection spindle |
| CN113523868A (en) * | 2020-04-16 | 2021-10-22 | 圣杰国际股份有限公司 | Tool sleeve structure for tool magazine of machine tool |
| CN113305619A (en) * | 2021-06-15 | 2021-08-27 | 安徽津野数控科技有限公司 | Numerical control machining center main shaft knife loosening unloading mechanism |
| CN113305619B (en) * | 2021-06-15 | 2023-12-22 | 苏州近藤精密部件有限公司 | Main shaft cutter loosening unloading mechanism of numerical control machining center |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |