CN109732272B - Full ceramic bearing electricity main shaft bearing and pivot dismounting device - Google Patents
Full ceramic bearing electricity main shaft bearing and pivot dismounting device Download PDFInfo
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- CN109732272B CN109732272B CN201910196720.2A CN201910196720A CN109732272B CN 109732272 B CN109732272 B CN 109732272B CN 201910196720 A CN201910196720 A CN 201910196720A CN 109732272 B CN109732272 B CN 109732272B
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Abstract
A full ceramic bearing electric main shaft bearing and rotating shaft dismounting device comprises a workbench, an electric main shaft clamping and positioning mechanism and a bearing dismounting mechanism, wherein the electric main shaft clamping and positioning mechanism and the bearing dismounting mechanism are arranged on the workbench in parallel; the electric main shaft clamping and positioning mechanism is used for fixing the electric main shaft, and the bearing disassembling mechanism is used for disassembling the bearing from the rotating shaft; the bearing disassembly mechanism is provided with the multi-jaw chuck for bearing disassembly, the multi-jaw chuck for bearing disassembly can adjust the position in two degrees of freedom in the horizontal direction, the multi-jaw chuck for bearing disassembly can rotate the upper jaw thereof, the radial position and the axial position are finely adjusted, liquid nitrogen can act on the rotating shaft and the bearing through the multi-jaw chuck for bearing disassembly, a gap is generated between a cooled bearing inner ring and the rotating shaft, the bearing can be disassembled from the rotating shaft through the bearing disassembly mechanism, and the disassembled bearing can be remained on the jaw. The invention improves the automatic disassembly level, the disassembly precision and the working efficiency and realizes the nondestructive disassembly.
Description
Technical Field
The invention belongs to the technical field of electric spindle dismounting, and particularly relates to a dismounting device for an electric spindle bearing and a rotating shaft of an all-ceramic bearing.
Background
The electric main shaft is a core component of a numerical control machine tool, the bearing is a core component of the electric main shaft, in order to further improve the running precision of the electric main shaft, more and more electric main shafts begin to use ceramic bearings, and compared with the traditional steel bearing, the ceramic bearing has good performances such as good thermal stability, wear resistance, high strength and the like, and the ceramic bearing is also a key for improving the running precision of the electric main shaft.
At present, the electric main shaft adopting the traditional steel bearing is mainly disassembled by means of manpower when being disassembled, so that the labor intensity of workers is high, the working efficiency is low, the precision of the main shaft and the bearing surface can be generally damaged, and the running precision of the electric main shaft can be inevitably influenced because the precision of the main shaft and the bearing surface is damaged after the electric main shaft is assembled again.
If the electric main shaft adopts a ceramic bearing, compared with the electric main shaft adopting the traditional steel bearing, the disassembly method can be obviously changed, and if the electric main shaft is also disassembled manually, the practical requirement can be more and more difficult to meet.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a device for detaching an electric main shaft bearing and a rotating shaft of a full-ceramic bearing, which greatly improves the automatic detaching level, not only effectively reduces the labor intensity of workers, but also effectively improves the detaching precision, can realize nondestructive detaching, and effectively improves the working efficiency.
In order to achieve the purpose, the invention adopts the following technical scheme: a full ceramic bearing electric main shaft bearing and rotating shaft dismounting device comprises a workbench, an electric main shaft clamping and positioning mechanism and a bearing dismounting mechanism; the electric main shaft clamping and positioning mechanism and the bearing disassembling mechanism are arranged on the workbench in parallel; the electric spindle clamping and positioning mechanism comprises a positioning mechanism base, a positioning mechanism guide rail, a first nut slide block, a first lead screw, a first clamping driving motor, a second nut slide block, a second lead screw, a second clamping driving motor, an electric spindle supporting and positioning seat and a height adjusting hydraulic cylinder; the positioning mechanism base is fixedly arranged on the workbench, the positioning mechanism guide rail is horizontally arranged on the positioning mechanism base, and the first nut sliding block and the second nut sliding block are symmetrically arranged on the positioning mechanism guide rail; the first clamping driving motor is fixed on the positioning mechanism base through a first motor mounting frame, a motor shaft of the first clamping driving motor is fixedly connected with the end part of a first lead screw, a first nut sliding block is sleeved on the first lead screw, and a first chuck is mounted on the first nut sliding block; the first lead screw is parallel to the guide rail of the positioning mechanism; the second clamping driving motor is fixed on the positioning mechanism base through a second motor mounting frame, a motor shaft of the second clamping driving motor is fixedly connected with the end part of a second screw rod, a second nut sliding block is sleeved on the second screw rod, and a second chuck is installed on the second nut sliding block; the second lead screw is parallel to the guide rail of the positioning mechanism; a hydraulic cylinder mounting groove is formed in the positioning mechanism base between the first chuck and the second chuck, the height adjusting hydraulic cylinder is vertically and fixedly mounted in the hydraulic cylinder mounting groove, a piston rod of the height adjusting hydraulic cylinder is arranged upwards, and the electric spindle supporting and positioning seat is fixedly mounted at the top of the piston rod of the height adjusting hydraulic cylinder.
The bearing dismounting mechanism comprises a dismounting mechanism base, a first dismounting mechanism guide rail, a first nut sliding table, a first ball screw, a first driving hand wheel, a second dismounting mechanism guide rail, a second nut sliding table, a second ball screw, a second driving hand wheel, a multi-jaw chuck for bearing dismounting and a chuck fixing frame; the disassembling mechanism base is fixedly arranged on the workbench, the first disassembling mechanism guide rail is horizontally arranged on the disassembling mechanism base, the first nut sliding table is arranged on the first disassembling mechanism guide rail and sleeved on a first ball screw, and the first ball screw is parallel to the first disassembling mechanism guide rail; the first driving hand wheel is fixedly arranged at the end part of the first ball screw; the second dismounting mechanism guide rail is horizontally and fixedly arranged on the first nut sliding table and is vertical to the first dismounting mechanism guide rail; the second nut sliding table is arranged on a second dismounting mechanism guide rail and sleeved on a second ball screw, and the second ball screw is parallel to the second dismounting mechanism guide rail; the second driving hand wheel is fixedly arranged at the end part of the second ball screw; the chuck mount is adorned admittedly on second screw slip table, the bearing is dismantled and is installed on the chuck mount with multi-jaw chuck, and the bearing is dismantled and is paralleled with the axis of multi-jaw chuck and second disassembly mechanism guide rail with the bearing.
The multi-jaw chuck for bearing disassembly comprises a chuck base, an electric turntable, a chuck end and a claw; the chuck base is fixedly arranged on the chuck fixing frame, and the end of the chuck is connected to the chuck base through an electric turntable; the chuck end is of a circular structure, a plurality of cooling holes are formed in the inner surface of the chuck end, the cooling holes are connected to a guide pipe in a junction mode, the other end of the guide pipe is connected with a liquid nitrogen tank, and the liquid nitrogen tank is placed on the workbench; the number of the hooks is three or four, the hooks are located on the axial outer end face of the chuck end, and the radial position and the axial position of the hooks on the chuck end can be automatically adjusted.
The invention has the beneficial effects that:
the dismounting device for the electric main shaft bearing and the rotating shaft of the all-ceramic bearing greatly improves the automatic dismounting level, not only effectively reduces the labor intensity of workers, but also effectively improves the dismounting precision, can realize nondestructive dismounting, and effectively improves the working efficiency.
Drawings
FIG. 1 is a schematic structural view of a full-ceramic bearing electric spindle bearing and rotating shaft dismounting device according to the present invention;
FIG. 2 is a schematic structural diagram of an electric spindle clamping and positioning mechanism of the present invention;
FIG. 3 is a schematic structural view of the bearing detaching mechanism of the present invention;
FIG. 4 is a schematic structural view of a multi-jaw chuck for removing a bearing according to the present invention;
in the figure, 1-a workbench, 2-an electric spindle clamping and positioning mechanism, 3-a bearing dismounting mechanism, 4-a positioning mechanism base, 5-a positioning mechanism guide rail, 6-a first nut slide block, 7-a first lead screw, 8-a first clamping driving motor, 9-a second nut slide block, 10-a second lead screw, 11-a second clamping driving motor, 12-an electric spindle supporting and positioning seat, 13-a height adjusting hydraulic cylinder, 14-a first motor mounting rack, 15-a first chuck, 16-a second chuck, 17-a dismounting mechanism base, 18-a first dismounting mechanism guide rail, 19-a first nut slide block, 20-a first ball screw, 21-a first driving hand wheel, 22-a second dismounting mechanism guide rail, 23-a second nut slide block, 24-a second ball screw chuck, 25-a second driving hand wheel, 26-a multi-claw for bearing dismounting, 27-a fixing rack, 28-a chuck, 29-electric turntable, 30-chuck end, 31-claw, 32-cooling hole, 33-liquid nitrogen tank, 34-second motor mounting rack.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments.
As shown in fig. 1 to 4, a device for detaching an electric spindle bearing and a rotating shaft of a full ceramic bearing comprises a workbench 1, an electric spindle clamping and positioning mechanism 2 and a bearing detaching mechanism 3; the electric main shaft clamping and positioning mechanism 2 and the bearing disassembling mechanism 3 are arranged on the workbench 1 in parallel; the electric spindle clamping and positioning mechanism 2 comprises a positioning mechanism base 4, a positioning mechanism guide rail 5, a first nut slide block 6, a first lead screw 7, a first clamping driving motor 8, a second nut slide block 9, a second lead screw 10, a second clamping driving motor 11, an electric spindle supporting and positioning seat 12 and a height adjusting hydraulic cylinder 13; the positioning mechanism base 4 is fixedly arranged on the workbench 1, the positioning mechanism guide rail 5 is horizontally arranged on the positioning mechanism base 4, and the first nut slide block 6 and the second nut slide block 9 are symmetrically arranged on the positioning mechanism guide rail 5; the first clamping driving motor 8 is fixed on the positioning mechanism base 4 through a first motor mounting frame 14, a motor shaft of the first clamping driving motor 8 is fixedly connected with the end part of a first lead screw 7, a first nut sliding block 6 is sleeved on the first lead screw 7, and a first chuck 15 is mounted on the first nut sliding block 6; the first lead screw 7 is parallel to the guide rail 5 of the positioning mechanism; the second clamping driving motor 11 is fixed on the positioning mechanism base 4 through a second motor mounting frame 34, a motor shaft of the second clamping driving motor 11 is fixedly connected with the end part of a second lead screw 10, a second nut sliding block 9 is sleeved on the second lead screw 10, and a second chuck 16 is installed on the second nut sliding block 9; the second lead screw 10 is parallel to the guide rail 5 of the positioning mechanism; a hydraulic cylinder mounting groove is formed in the positioning mechanism base 4 between the first chuck 15 and the second chuck 16, the height adjusting hydraulic cylinder 13 is vertically and fixedly mounted in the hydraulic cylinder mounting groove, a piston rod of the height adjusting hydraulic cylinder 13 is arranged upwards, and the electric spindle supporting and positioning seat 12 is fixedly mounted at the top of the piston rod of the height adjusting hydraulic cylinder 13.
The bearing dismounting mechanism 3 comprises a dismounting mechanism base 17, a first dismounting mechanism guide rail 18, a first nut sliding table 19, a first ball screw 20, a first driving hand wheel 21, a second dismounting mechanism guide rail 22, a second nut sliding table 23, a second ball screw 24, a second driving hand wheel 25, a multi-jaw chuck 26 for bearing dismounting and a chuck fixing frame 27; the disassembling mechanism base 17 is fixedly arranged on the workbench 1, the first disassembling mechanism guide rail 18 is horizontally arranged on the disassembling mechanism base 17, the first nut sliding table 19 is arranged on the first disassembling mechanism guide rail 18, the first nut sliding table 19 is sleeved on the first ball screw 20, and the first ball screw 20 is parallel to the first disassembling mechanism guide rail 18; the first driving hand wheel 21 is fixedly arranged at the end part of the first ball screw 20; the second dismounting mechanism guide rail 22 is horizontally and fixedly arranged on the first nut sliding table 19, and the second dismounting mechanism guide rail 22 is vertical to the first dismounting mechanism guide rail 18; the second nut sliding table 23 is arranged on the second dismounting mechanism guide rail 22, the second nut sliding table 23 is sleeved on a second ball screw 24, and the second ball screw 24 is parallel to the second dismounting mechanism guide rail 22; the second driving hand wheel 25 is fixedly arranged at the end part of the second ball screw 24; chuck mount 27 is adorned admittedly on second screw slip table 23, bearing dismantles and installs on chuck mount 27 with multi-jaw chuck 26, and bearing dismantles and parallels with the axis of multi-jaw chuck 26 and second disassembly mechanism guide rail 22.
The multi-jaw chuck 26 for bearing disassembly comprises a chuck base 28, an electric rotating disc 29, a chuck end 30 and hook claws 31; the chuck base 28 is fixedly arranged on the chuck fixing frame 27, and the chuck end 30 is connected to the chuck base 28 through an electric rotating disc 29; the chuck end 30 is of a circular structure, a plurality of cooling holes 32 are formed in the inner surface of the chuck end 30, the cooling holes 32 are connected to a guide pipe in a junction mode, the other end of the guide pipe is connected with a liquid nitrogen tank 33, and the liquid nitrogen tank 33 is placed on the workbench 1; the number of the hook claws 31 is three or four, the hook claws 31 are positioned on the axial outer end surface of the chuck end 30, and the radial position and the axial position of the hook claws 31 on the chuck end 30 can be automatically adjusted.
The one-time use process of the present invention is described below with reference to the accompanying drawings:
firstly, the electric spindle is horizontally placed on the electric spindle supporting and positioning seat 12, then the extending amount of the piston rod of the height adjusting hydraulic cylinder 13 is adjusted, and further the height positions of the electric spindle supporting and positioning seat 12 and the electric spindle are adjusted until the central axis of the electric spindle and the central axis of the multi-jaw chuck 26 for bearing disassembly are in the same horizontal plane.
The first clamping drive motor 8 and the second clamping drive motor 11 are respectively started to move the first nut slider 6 and the second nut slider 9 towards each other along the positioning mechanism guide rail 5 until the first chuck 15 and the second chuck 16 are clamped on the electric spindle housing.
Firstly, rotating a first driving hand wheel 21 to enable a first nut sliding table 19 to move along a first dismounting mechanism guide rail 18 until the central axis of a multi-jaw chuck 26 for bearing dismounting coincides with the central axis of the multi-jaw chuck 26 for bearing dismounting; then, a second driving hand wheel 25 is rotated to enable a second nut sliding table 23 to move along a second dismounting mechanism guide rail 22 until a rotating shaft of the electric main shaft moves into an inner hole of a chuck end 30 of the multi-jaw chuck 26 for bearing dismounting;
firstly, the radial position of the hook claw 31 is adjusted to lead the hook claw 31 to be aligned with the circumferential clearance between the inner ring and the outer ring of the bearing, then the electric turntable 29 is controlled to act, the circumferential position of the hook claw 31 is adjusted to lead the hook claw 31 to be aligned with the clearance between the bearing balls, and finally the axial position of the hook claw 31 is adjusted to lead the hook claw 31 to extend into the clearance between the bearing balls.
Next, a liquid nitrogen tank 33 is opened, liquid nitrogen is introduced into the chuck end 30 through a guide pipe, and is applied to the rotating shaft and the bearing through a plurality of cooling holes 32, the rear bearing and the rotating shaft are integrally cooled by the liquid nitrogen, and a gap is generated between the inner ring of the bearing and the rotating shaft by the difference in shrinkage rate between the ceramic material (bearing) and the steel material (rotating shaft).
After cooling, when a gap is formed between the inner ring of the bearing and the rotating shaft to meet the bearing dismounting requirement, the radial position of the hook claw 31 is finely adjusted to enable the hook claw 31 to tightly support the outer ring of the bearing, then the second driving hand wheel 25 is rotated to enable the multi-claw chuck 26 for bearing dismounting to move towards the direction far away from the electric spindle until the bearing is completely separated from the rotating shaft, and the dismounted bearing is remained on the hook claw 31.
The embodiments are not intended to limit the scope of the present invention, and all equivalent implementations or modifications without departing from the scope of the present invention are intended to be included in the scope of the present invention.
Claims (1)
1. The utility model provides a full ceramic bearing electricity main shaft bearing and pivot dismounting device which characterized in that: comprises a workbench, an electric main shaft clamping and positioning mechanism and a bearing dismounting mechanism; the electric main shaft clamping and positioning mechanism and the bearing disassembling mechanism are arranged on the workbench in parallel; the electric spindle clamping and positioning mechanism comprises a positioning mechanism base, a positioning mechanism guide rail, a first nut slide block, a first lead screw, a first clamping driving motor, a second nut slide block, a second lead screw, a second clamping driving motor, an electric spindle supporting and positioning seat and a height adjusting hydraulic cylinder; the positioning mechanism base is fixedly arranged on the workbench, the positioning mechanism guide rail is horizontally arranged on the positioning mechanism base, and the first nut sliding block and the second nut sliding block are symmetrically arranged on the positioning mechanism guide rail; the first clamping driving motor is fixed on the positioning mechanism base through a first motor mounting frame, a motor shaft of the first clamping driving motor is fixedly connected with the end part of a first lead screw, a first nut sliding block is sleeved on the first lead screw, and a first chuck is mounted on the first nut sliding block; the first lead screw is parallel to the guide rail of the positioning mechanism; the second clamping driving motor is fixed on the positioning mechanism base through a second motor mounting frame, a motor shaft of the second clamping driving motor is fixedly connected with the end part of a second screw rod, a second nut sliding block is sleeved on the second screw rod, and a second chuck is installed on the second nut sliding block; the second lead screw is parallel to the guide rail of the positioning mechanism; a hydraulic cylinder mounting groove is formed in a positioning mechanism base between the first chuck and the second chuck, the height adjusting hydraulic cylinder is vertically and fixedly mounted in the hydraulic cylinder mounting groove, a piston rod of the height adjusting hydraulic cylinder is arranged upwards, and the electric spindle supporting and positioning seat is fixedly mounted at the top of the piston rod of the height adjusting hydraulic cylinder; the bearing dismounting mechanism comprises a dismounting mechanism base, a first dismounting mechanism guide rail, a first nut sliding table, a first ball screw, a first driving hand wheel, a second dismounting mechanism guide rail, a second nut sliding table, a second ball screw, a second driving hand wheel, a multi-jaw chuck for bearing dismounting and a chuck fixing frame; the disassembling mechanism base is fixedly arranged on the workbench, the first disassembling mechanism guide rail is horizontally arranged on the disassembling mechanism base, the first nut sliding table is arranged on the first disassembling mechanism guide rail and sleeved on a first ball screw, and the first ball screw is parallel to the first disassembling mechanism guide rail; the first driving hand wheel is fixedly arranged at the end part of the first ball screw; the second dismounting mechanism guide rail is horizontally and fixedly arranged on the first nut sliding table and is vertical to the first dismounting mechanism guide rail; the second nut sliding table is arranged on a second dismounting mechanism guide rail and sleeved on a second ball screw, and the second ball screw is parallel to the second dismounting mechanism guide rail; the second driving hand wheel is fixedly arranged at the end part of the second ball screw; the chuck fixing frame is fixedly arranged on the second nut sliding table, the multi-jaw chuck for bearing disassembly is arranged on the chuck fixing frame, and the central axis of the multi-jaw chuck for bearing disassembly is parallel to the guide rail of the second disassembly mechanism; the multi-jaw chuck for bearing disassembly comprises a chuck base, an electric turntable, a chuck end and a claw; the chuck base is fixedly arranged on the chuck fixing frame, and the end of the chuck is connected to the chuck base through an electric turntable; the chuck end is of a circular structure, a plurality of cooling holes are formed in the inner surface of the chuck end, the cooling holes are connected to a guide pipe in a junction mode, the other end of the guide pipe is connected with a liquid nitrogen tank, and the liquid nitrogen tank is placed on the workbench; the number of the hooks is three or four, the hooks are located on the axial outer end face of the chuck end, and the radial position and the axial position of the hooks on the chuck end can be automatically adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910196720.2A CN109732272B (en) | 2019-03-15 | 2019-03-15 | Full ceramic bearing electricity main shaft bearing and pivot dismounting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910196720.2A CN109732272B (en) | 2019-03-15 | 2019-03-15 | Full ceramic bearing electricity main shaft bearing and pivot dismounting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109732272A CN109732272A (en) | 2019-05-10 |
| CN109732272B true CN109732272B (en) | 2020-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910196720.2A Active CN109732272B (en) | 2019-03-15 | 2019-03-15 | Full ceramic bearing electricity main shaft bearing and pivot dismounting device |
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| CN (1) | CN109732272B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111451715A (en) * | 2020-04-17 | 2020-07-28 | 攀钢集团西昌钢钒有限公司 | Pin shaft dismounting tool and method |
| CN111761295B (en) * | 2020-06-03 | 2021-06-01 | 明阳智慧能源集团股份公司 | Nondestructive separation and disassembly method for main shaft and bearing of wind generating set |
| CN112847239B (en) * | 2021-01-21 | 2022-09-20 | 东北大学秦皇岛分校 | Casing pipe dismounting device and method based on asynchronous multi-frequency induction heating |
| CN115194451B (en) * | 2022-07-29 | 2024-01-26 | 清华大学 | End cover dismounting device |
| CN115338597B (en) * | 2022-10-18 | 2023-01-17 | 新乡市福晟机械有限公司 | Assembly device for direct-drive spindle of machine tool |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203401268U (en) * | 2013-08-16 | 2014-01-22 | 中国北车集团大连机车车辆有限公司 | Assembling and disassembling device for locomotive suspension bearing box inner bearing locating labyrinth ring |
| CN203863407U (en) * | 2014-06-04 | 2014-10-08 | 山东友泰机床制造有限公司 | Bidirectional self-centering clamp of end face milling and centering machine tool |
| CN104275676B (en) * | 2014-10-27 | 2016-03-16 | 中航工业哈尔滨轴承有限公司 | A kind of angular contact ball bearing is harmless tears cover method open |
| CN109789492B (en) * | 2016-11-17 | 2020-09-25 | 株式会社北川铁工所 | Chuck with a locking mechanism |
| CN206509971U (en) * | 2017-01-19 | 2017-09-22 | 中化重庆涪陵化工有限公司 | Motor bearings dismounts workbench |
| CN206575309U (en) * | 2017-03-08 | 2017-10-20 | 浙江捷昌线性驱动科技股份有限公司 | Rotor bearing disassembling fixture |
| CN207593690U (en) * | 2017-08-23 | 2018-07-10 | 鼎奇(天津)主轴科技有限公司 | A kind of novel main shaft bearing replacer for being easily installed and dismantling |
| CN109128935A (en) * | 2018-09-30 | 2019-01-04 | 华中科技大学 | A kind of variable diameters fixture |
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2019
- 2019-03-15 CN CN201910196720.2A patent/CN109732272B/en active Active
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