CN110666195A - Tight structure in lathe tailstock top - Google Patents
Tight structure in lathe tailstock top Download PDFInfo
- Publication number
- CN110666195A CN110666195A CN201910902946.XA CN201910902946A CN110666195A CN 110666195 A CN110666195 A CN 110666195A CN 201910902946 A CN201910902946 A CN 201910902946A CN 110666195 A CN110666195 A CN 110666195A
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- motor
- spring
- ball bearing
- shaft sleeve
- shaft
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- 238000000034 method Methods 0.000 claims abstract description 6
- 230000006698 induction Effects 0.000 claims description 17
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000001939 inductive effect Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B23/00—Tailstocks; Centres
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turning (AREA)
Abstract
The invention discloses a jacking structure of a lathe tailstock, and belongs to the field of lathe parts. The existing lathe tailstock body jacking mode has the problems that the jacking process is long in time consumption, and workpieces with different lengths need to be replaced by different jacking control programs. The invention comprises a tailstock body, a ball screw, a motor base, a motor, a shaft sleeve, a spring seat, a thrust ball bearing, a spring and an inductive switch. The tail frame body can rapidly move to directly push a workpiece tightly, and the motor can rapidly stop working through the matching of the shaft sleeve, the spring seat, the thrust ball bearing, the spring and the inductive switch after the workpiece is pushed tightly, so that the efficiency of the tail frame body for pushing the workpiece tightly is greatly improved.
Description
Technical Field
The invention belongs to the field of lathe parts, and particularly relates to a jacking structure of a servo tailstock of a horizontal lathe.
Background
The existing horizontal lathe servo tailstock is pushed tightly by stopping rotating after the load of a motor reaches a set value after the workpiece is pushed tightly in a motor load feedback mode generally. In order to prevent impact force generated when the tail stock moves fast to push the workpiece tightly from damaging the workpiece and parts of a transmission part in the pushing mechanism, the tail stock needs to move fast to be close to the workpiece first and then move the pushed workpiece slowly, the pushing process is long in time consumption, and workpieces with different lengths need to be replaced by different pushing control programs.
Disclosure of Invention
The invention provides a tailstock jacking structure with a spring jacking function, and aims to solve the problems that the jacking process of the original jacking mode is long in time consumption, and workpieces with different lengths need to be replaced by different jacking control programs.
Therefore, the invention adopts the following technical scheme: a lathe tailstock jacking structure comprises a tailstock body, a ball screw, a motor base and a motor, wherein the tailstock body is fixedly connected with a nut sleeved on the ball screw; the lathe tailstock jacking structure is characterized by further comprising a shaft sleeve, a spring seat, a thrust ball bearing, a spring and an induction switch, wherein the rear end of the ball screw is fixedly connected with the shaft sleeve, the other end of the shaft sleeve is axially and movably connected with a motor shaft of the motor, the shaft sleeve is supported and installed in a shaft hole of the motor seat through the deep groove ball bearing, a gap is reserved between the outer peripheral surface of the shaft sleeve and the shaft hole, an inner ring of the deep groove ball bearing is located in an installation groove formed in the outer peripheral surface of the shaft sleeve, the spring seat is sleeved on the shaft sleeve through the thrust ball bearing, the spring seat is located on the rear side of the deep groove ball bearing, a shoulder is arranged between the deep groove ball bearing and the thrust ball bearing, the end surface of the inner ring of the thrust ball bearing abuts against the shoulder, a hole is formed in the position, right opposite to the top of the spring, the induction block penetrates out of the hole, and the induction switch arranged on the top of the motor base is matched and opposite to the induction block; the spring set up in the rear side of spring holder, the one end of spring supports with the rear side of spring holder and leans on, the other end of spring supports with the installation the motor end cover of motor supports and leans on.
In addition to the above technical solutions, the present invention also includes the following technical features.
The motor shaft is provided with a first positioning groove, a motor shaft is arranged on the rear side of the axial through hole in a penetrating mode, a sliding groove is formed in the hole wall of the axial through hole, a second positioning groove is formed in the motor shaft, the lower section of the second positioning key is embedded in the positioning groove, the upper section of the second positioning key is arranged in the sliding groove, and the shaft sleeve is movably connected with the motor shaft in the axial direction through the sliding groove.
When a workpiece needs to be jacked tightly, the motor rotates to drive the shaft sleeve and the ball screw through the positioning key, so that the tailstock body is pushed to advance, the deep groove ball bearing bears the load of the rotation of the shaft sleeve in the process, the inner ring of the deep groove ball bearing has axial load force towards the direction of the tailstock body relative to the outer ring of the deep groove ball bearing, the inner ring bears force towards one side of the tailstock body and is matched with a spring to enable the spring seat to be positioned close to one side of the tailstock body; when a workpiece is ejected from the top of the tail frame body, the tail frame body cannot advance due to the workpiece being ejected, the motor continues to rotate, and the screw nut stops advancing, so that the axial load force of the inner ring of the deep groove ball bearing relative to the outer ring of the deep groove ball bearing disappears, the retraction force of the inner ring of the deep groove ball bearing retracts towards the direction of the spring seat, the shaft sleeve is pushed, the thrust ball bearing and the spring seat are driven to move backwards, the spring on the spring seat is compressed, the induction block on the spring seat is far away from the induction switch, a signal is fed back to the motor, the motor stops rotating, and the tail frame body and the; when the tailstock loosens the workpiece and retreats, the motor rotates reversely, the tailstock body retreats, the spring on the spring seat extends to restore to the initial state, and the induction block on the spring seat is close to the induction switch again. In the working process, the workpiece is always compressed by the spring under the action of the jacking force, the stress is stable, and the workpiece cannot be jacked to be damaged or other parts in the jacking mechanism cannot be damaged due to the driving of the motor.
The invention can achieve the following beneficial effects: the tail frame body can rapidly move to directly push a workpiece tightly, and the motor can rapidly stop working through the matching of the shaft sleeve, the spring seat, the thrust ball bearing, the spring and the inductive switch after the workpiece is pushed tightly, so that the efficiency of the tail frame body for pushing the workpiece tightly is greatly improved.
Drawings
Fig. 1 is a schematic structural view of the motor of the present invention.
Fig. 2 is a schematic structural diagram of the present invention in a state where the motor is turned off.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings.
As shown in fig. 1-2, the lathe tailstock jacking structure of the invention comprises a tailstock body 1, a ball screw 2, a motor base 7, a motor 6, a shaft sleeve 3, a spring seat 8, a thrust ball bearing 5, a spring 9 and an inductive switch 10, wherein the tailstock body is fixedly connected with a nut sleeved on the ball screw, the motor is fixedly arranged on the motor base, and the ball screw is driven to rotate by the motor and drives the tailstock body to move; the shaft sleeve is provided with an axial through hole, a ball screw rod is arranged at the front side of the axial through hole in a penetrating way and is fixedly connected with the shaft sleeve through a first positioning key and a first positioning groove, the motor shaft is arranged at the rear side of the axial through hole in a penetrating way, a sliding groove is arranged on the hole wall of the axial through hole, a second positioning groove is arranged on a motor shaft, the lower section of a second positioning key 12 is embedded in the positioning groove, the upper section of the second positioning key is arranged in the sliding groove, the shaft sleeve is axially movably connected with the motor shaft through the sliding groove, the shaft sleeve is supported and arranged in a shaft hole of the motor base through a deep groove ball bearing 4, a gap is arranged between the outer peripheral surface of the shaft sleeve and the shaft hole, an inner ring of the deep groove ball bearing is positioned in a mounting groove arranged on the outer peripheral surface of the shaft sleeve, a spring seat is sleeved on the shaft sleeve through a thrust ball bearing 5, a hole is formed in the top, opposite to the spring seat, of the motor seat, an induction block 11 is arranged at the top of the spring seat, the induction block penetrates out of the hole, and an induction switch arranged on the top of the motor seat is matched and opposite to the induction block; the spring sets up in the rear side of spring holder, and the one end of spring supports with the rear side of spring holder and leans on, and the other end of spring supports with the motor end cover of installation motor and leans on.
Claims (2)
1. A lathe tailstock jacking structure comprises a tailstock body, a ball screw, a motor base and a motor, wherein the tailstock body is fixedly connected with a nut sleeved on the ball screw; the method is characterized in that: the lathe tailstock jacking structure further comprises a shaft sleeve, a spring seat, a thrust ball bearing, a spring and an induction switch, the rear end of the ball screw is fixedly connected with the shaft sleeve, the other end of the shaft sleeve is axially movably connected with a motor shaft of the motor, the shaft sleeve is supported and installed in a shaft hole of the motor seat through the deep groove ball bearing, a gap is reserved between the outer peripheral surface of the shaft sleeve and the shaft hole, an inner ring of the deep groove ball bearing is located in a mounting groove formed in the outer peripheral surface of the shaft sleeve, the spring seat is sleeved on the shaft sleeve through the thrust ball bearing, the spring seat is located at the rear side of the deep groove ball bearing, a shoulder is arranged between the deep groove ball bearing and the thrust ball bearing, the end surface of the inner ring of the thrust ball bearing abuts against the shoulder, the motor seat is provided with a hole facing the top of the spring seat, and the induction, the induction block penetrates out of the hole, and the induction switch arranged on the top of the motor base is matched and opposite to the induction block; the spring set up in the rear side of spring holder, the one end of spring supports with the rear side of spring holder and leans on, the other end of spring supports with the installation the motor end cover of motor supports and leans on.
2. The lathe tailstock jacking structure as claimed in claim 1, wherein: the motor shaft is provided with a first positioning groove, a motor shaft is arranged on the rear side of the axial through hole in a penetrating mode, a sliding groove is formed in the hole wall of the axial through hole, a second positioning groove is formed in the motor shaft, the lower section of the second positioning key is embedded in the positioning groove, the upper section of the second positioning key is arranged in the sliding groove, and the shaft sleeve is movably connected with the motor shaft in the axial direction through the sliding groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910902946.XA CN110666195A (en) | 2019-09-24 | 2019-09-24 | Tight structure in lathe tailstock top |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910902946.XA CN110666195A (en) | 2019-09-24 | 2019-09-24 | Tight structure in lathe tailstock top |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110666195A true CN110666195A (en) | 2020-01-10 |
Family
ID=69077391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910902946.XA Pending CN110666195A (en) | 2019-09-24 | 2019-09-24 | Tight structure in lathe tailstock top |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110666195A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205342800U (en) * | 2015-12-15 | 2016-06-29 | 上海机床厂有限公司 | Tailstock of tight mode in many tops |
| CN106270817A (en) * | 2016-09-30 | 2017-01-04 | 浙江日创机电科技有限公司 | A kind of gear-hobbing machine suspension type apex tailstock |
| CN209190520U (en) * | 2018-11-21 | 2019-08-02 | 华辰精密装备（昆山）股份有限公司 | Grinding machine tailstock splined sleeve structure |
| CN210996528U (en) * | 2019-09-24 | 2020-07-14 | 浙江日发精密机床有限公司 | Tight structure in lathe tailstock top |
-
2019
- 2019-09-24 CN CN201910902946.XA patent/CN110666195A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205342800U (en) * | 2015-12-15 | 2016-06-29 | 上海机床厂有限公司 | Tailstock of tight mode in many tops |
| CN106270817A (en) * | 2016-09-30 | 2017-01-04 | 浙江日创机电科技有限公司 | A kind of gear-hobbing machine suspension type apex tailstock |
| CN209190520U (en) * | 2018-11-21 | 2019-08-02 | 华辰精密装备（昆山）股份有限公司 | Grinding machine tailstock splined sleeve structure |
| CN210996528U (en) * | 2019-09-24 | 2020-07-14 | 浙江日发精密机床有限公司 | Tight structure in lathe tailstock top |
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