CN102069413A - Precise machine tool headstock and tailstock driving positioning device - Google Patents
Precise machine tool headstock and tailstock driving positioning device Download PDFInfo
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- CN102069413A CN102069413A CN 201010597617 CN201010597617A CN102069413A CN 102069413 A CN102069413 A CN 102069413A CN 201010597617 CN201010597617 CN 201010597617 CN 201010597617 A CN201010597617 A CN 201010597617A CN 102069413 A CN102069413 A CN 102069413A
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- screw
- tailstock
- worm
- drives
- shell
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Abstract
The invention relates to a precise machine tool headstock and tailstock driving positioning device, which comprises a support, a front shell and a rear shell, and is characterized in that the upper surface of the support is fixedly connected with the rear shell; a screw is arranged at the horizontal position in the rear shell; the screw is meshed with a nut with a worm wheel; the worm wheel is meshed with a worm; the lower end of the worm is connected with a precise speed reducer and a servo motor; the front end of the screw is fixedly connected with the front shell through a flange plate; a pressure sensor and a thrust plate are arranged in the front shell; and a butterfly spring is arranged between the pressure sensor and the thrust plate. In the invention, a driving function, a position function and a feedback control function are integrated, a structure is compact, and the speed and the positioning precision of the driving position movement are improved.
Description
Technical field
The present invention relates to a kind of mechanical positioner, be specifically related to a kind of driving positioner that is used for the lathe head, tail frame.
Background technology
In recent years, along with developing rapidly of equipment manufacture, the important function that various high precision machine tools are made the field in precision was obvious day by day.For high precision machine tool, the high accuracy of head/tailstock drives and reliable location is a very crucial problem, directly has influence on the machining accuracy and the job security of lathe.Therefore, the lathe head/tailstock of design one cover high accuracy high reliability drives positioner becomes indispensable necessary link in the high precision machine tool design.
At present, the driving of high precision machine tool head/tailstock and positioning function majority drive by separate type and positioner is realized jointly, are promptly realized driving feeding by a cover drive unit, be fed into ad-hoc location after, overlap positioner with head/tailstock stationary positioned by one again.The driving of this separate type and positioner have increased the complexity of lathe head/tailstock structure greatly, and it is more to drive location action, cause head/tailstock to drive that waste time and energy in the location and accurate positioning is not high.
At above present situation, be badly in need of a kind of compact conformation of development, drive the accurate positioner that drives of the high high precision machine tool head of positioning accuracy/tailstock.
Summary of the invention
The present invention will provide a kind of lathe headstock and the accurate positioner that drives of tailstock, and this device can realize that the head, tail frame high accuracy drives, and can realize reliable location again.
For achieving the above object, technical scheme of the present invention is: the accurate positioner that drives of a kind of lathe headstock and tailstock, comprise support, forward and backward body shell, be characterized in: fixedly connected back body shell above the support, horizontal level is provided with leading screw in the back body shell, the leading screw external toothing has the nut of worm gear, engages worm on the worm gear, and the worm screw lower end is connected with precision speed reduction device and servomotor; The leading screw front end is fixedlyed connected with the precursor shell by ring flange, and pressure sensor and thrust disc are housed in the precursor shell, places butterfly spring between pressure sensor and the thrust disc.
Precision speed reduction device links to each other with worm screw by shaft coupling, ring flange links to each other with the precursor shell by screw, and an end of pressure sensor is fixed on precursor shell inside by screw, and the other end links to each other with butterfly spring, butterfly spring acts on the thrust disc, and thrust disc links to each other with tailstock with the lathe headstock by bolt.
The present invention compared with prior art has the following advantages and beneficial effect:
The bearing force that the present invention holds head, tail frame workpiece passes to pressure sensor by thrust disc and butterfly spring, when the force signal of pressure sensor during less than default thrust magnitude, control system control servomotor forward drive, drive the worm screw rotation by precision speed reduction device, shaft coupling, worm screw drives the worm gear rotation by engagement, and the internal thread of worm gear endoporus drives leading screw by engagement and moves axially.Leading screw drives the translation of thrust disc forward by ring flange, body shell, pressure sensor and butterfly spring, makes the translation of head, tail frame forward, and the workpiece bearing force increases.When bearing force equaled to preset thrust magnitude, control system control servomotor stopped to drive, thereby realized the micro-precision location of head/tailstock.When bearing force during, control system control servomotor reverse drive, realize the backward movement of head, tail frame greater than default thrust magnitude.Among the present invention, when system blackout,, thereby guarantee the safety of entire mechanism because the latching characteristics of screw pair and worm couple can prevent that head/tailstock is reversed action.
The present invention integrates driving, location, feedback control function, and compact conformation has improved the speed and the positioning accuracy that drive location action.
Description of drawings
Fig. 1 is a structural representation of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated: present embodiment is to implement under the prerequisite in technical solution of the present invention.
As shown in Figure 1, the accurate positioner that drives of the lathe headstock of the present invention and tailstock comprises support 1, precision speed reduction device 2, AC servo motor 3, shaft coupling 4, back body shell 5, leading screw 6, worm gear (feed screw nut) 7, worm screw 8, ring flange 9, precursor shell 10, pressure sensor 11, butterfly spring 12 and thrust disc 13.
When pressure sensor 11 detects the bearing force of head, tail frame when too small, pressure sensor 11 drives AC servo motor 3 by control system just to be changeed, AC servo motor 3 moves horizontally by the forward that precision speed reduction device 2, shaft coupling 4, worm screw 8, worm gear (feed screw nut) 7 drive leading screw 6, leading screw 6 moves by the forward of ring flange 9, precursor shell 10, pressure sensor 11, butterfly spring 12 and thrust disc 13 pusher head/tailstock, thereby strengthens the bearing force of head, tail frame.In like manner, when pressure sensor 11 detect to the end/when the bearing force of tailstock is excessive, pressure sensor 11 drives AC servo motor 3 counter-rotatings by control system, AC servo motor 3 drives oppositely moving horizontally of leading screw 6 by precision speed reduction device 2, shaft coupling 4, worm screw 8, worm gear (feed screw nut) 7, leading screw 6 oppositely moves by ring flange 9, precursor shell 10, pressure sensor 11, butterfly spring 12 and thrust disc 13 pusher head/tailstock, thereby reduces the bearing force of head, tail frame.In addition, when system cut-off,, prevent that head, tail frame is reversed action, thereby guarantee the safety of entire mechanism because worm couple has auto-lock function.
Claims (5)
1. the accurate positioner that drives of the lathe headstock and tailstock, comprise support (1), forward and backward body shell (10,5), it is characterized in that: fixedly connected back body shell (5) above the described support (1), the interior horizontal level of back body shell (5) is provided with leading screw (6), leading screw (6) external toothing has the nut of worm gear (7), and worm gear (7) is gone up engages worm (8), and worm screw (8) lower end is connected with precision speed reduction device (2) and servomotor (3); Leading screw (6) front end is fixedlyed connected with precursor shell (10) by ring flange (9), and pressure sensor (11) and thrust disc (13) are housed in the precursor shell (10), places butterfly spring (12) between pressure sensor (11) and the thrust disc (13).
2. the accurate positioner that drives of the lathe headstock according to claim 1 and tailstock is characterized in that; Described precision speed reduction device (2) links to each other with worm screw (8) by shaft coupling (4), and described ring flange (9) links to each other with precursor shell (10) by screw.
3. the accurate positioner that drives of the lathe headstock according to claim 1 and tailstock is characterized in that; After the engagement of described worm screw (8) and worm gear (7), embedded feed screw nut of worm gear (7) and leading screw (6) engaged transmission, and worm couple, screw pair have auto-lock function.
4. the accurate positioner that drives of the lathe headstock according to claim 1 and tailstock is characterized in that; One end of described pressure sensor (11) is fixed on precursor shell (10) inside by screw, and the other end links to each other with butterfly spring (12).
5. the accurate positioner that drives of the lathe headstock according to claim 1 and tailstock is characterized in that; Described butterfly spring (112) acts on the thrust disc (13), and thrust disc (13) links to each other with tailstock with the lathe headstock by bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010597617 CN102069413B (en) | 2010-12-21 | 2010-12-21 | Precise machine tool headstock and tailstock driving positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010597617 CN102069413B (en) | 2010-12-21 | 2010-12-21 | Precise machine tool headstock and tailstock driving positioning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102069413A true CN102069413A (en) | 2011-05-25 |
| CN102069413B CN102069413B (en) | 2012-10-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010597617 Expired - Fee Related CN102069413B (en) | 2010-12-21 | 2010-12-21 | Precise machine tool headstock and tailstock driving positioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102069413B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6182544B1 (en) * | 1999-06-29 | 2001-02-06 | Shih-Ho Chen | Stepless cutter feeding mechanism for a lathe |
| CN201002187Y (en) * | 2005-12-16 | 2008-01-09 | 谭方华 | Positioning and clamping mechanism for center hole |
| CN201070719Y (en) * | 2007-06-29 | 2008-06-11 | 齐齐哈尔轨道交通装备有限责任公司 | Clamping apparatus |
| CN201264171Y (en) * | 2008-08-05 | 2009-07-01 | 陈立新 | Radial movement mechanism |
-
2010
- 2010-12-21 CN CN 201010597617 patent/CN102069413B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6182544B1 (en) * | 1999-06-29 | 2001-02-06 | Shih-Ho Chen | Stepless cutter feeding mechanism for a lathe |
| CN201002187Y (en) * | 2005-12-16 | 2008-01-09 | 谭方华 | Positioning and clamping mechanism for center hole |
| CN201070719Y (en) * | 2007-06-29 | 2008-06-11 | 齐齐哈尔轨道交通装备有限责任公司 | Clamping apparatus |
| CN201264171Y (en) * | 2008-08-05 | 2009-07-01 | 陈立新 | Radial movement mechanism |
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| Publication number | Publication date |
|---|---|
| CN102069413B (en) | 2012-10-17 |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121017 Termination date: 20191221 |